fix lint errors

- Pivot support implementation 
- Rename queries into inquiries
- Rename editor into workspace
- Change result set format
- New JSON format for inquiries
- Redesign panels

.github/workflows/config.grenrc.js

@@ -0,0 +1,17 @@
+module.exports = {
+  dataSource: 'milestones',
+  ignoreIssuesWith: [
+    'wontfix',
+    'duplicate'
+  ],
+  milestoneMatch: 'v{{tag_name}}',
+  template: {
+    issue: '- {{name}} [{{text}}]({{url}})',
+    changelogTitle: "",
+    release: "{{body}}",
+  },
+  groupBy: {
+    'Enhancements': ["enhancement", "internal"],
+    'Bug fixes': ["bug"]
+  }
+}

.github/workflows/main.yml

@@ -15,6 +15,10 @@ jobs:
       uses: actions/setup-node@v1
       with:
         node-version: 10.x
+
+    - name: Update npm
+      run: npm install -g npm@7
+
     - name: npm install and build
       run: |
         npm install
@@ -23,18 +27,28 @@ jobs:
     - name: Create archive
       run: |
         cd dist
-        zip -9 -r  dist.zip . -x "js/*.map"
+        zip -9 -r  dist.zip . -x "js/*.map" -x "/*.map"
+
+    - name: Create Release Notes
+      run: |
+        npm install github-release-notes@0.16.0 -g
+        gren changelog --generate  --config="/.github/workflows/config.grenrc.js"
+      env:
+        GREN_GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
     - name: Create release
       uses: ncipollo/release-action@v1
       with:
         artifacts: "dist/dist.zip"
         token: ${{ secrets.GITHUB_TOKEN }}
+        bodyFile: "CHANGELOG.md"
 
     - name: Deploy 🚀
-      uses: JamesIves/github-pages-deploy-action@3.6.2
+      uses: JamesIves/github-pages-deploy-action@4.1.1
       with:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        BRANCH: build # The branch the action should deploy to.
-        FOLDER: dist/ # The folder the action should deploy.
-        CLEAN: false # Automatically remove deleted files from the deploy branch
+        token: ${{ secrets.GITHUB_TOKEN }}
+        branch: build # The branch the action should deploy to.
+        folder: dist/ # The folder the action should deploy.
+        clean: true # Automatically remove deleted files from the deploy branch
+        clean-exclude: .nojekyll
+

.github/workflows/test.yml

@@ -4,6 +4,9 @@ on:
   push:
     branches:
     - 'master'
+  pull_request:
+    branches:
+    - 'master'
 
 jobs:
   test:
@@ -21,11 +24,14 @@ jobs:
         sudo apt-get update
         sudo apt-get install -y chromium-browser firefox
 
+    - name: Update npm
+      run: npm install -g npm@7
+
     - name: Install the project
       run: npm install
 
     - name: Run lint
-      run: npm run lint
+      run: npm run lint -- --no-fix
 
     - name: Run karma tests
       run: npm run test

README.md

@@ -4,20 +4,20 @@
 
 # sqliteviz
 
-Sqliteviz is a single-page PWA for fully client-side visualisation of SQLite databases or CSV files.
+Sqliteviz is a single-page offline-first PWA for fully client-side visualisation of SQLite databases or CSV files.
 
-This application allows to:
-- run SQL queries in SQLite database and create all kinds of charts based on result set
-- import CSV file into SQLite database and visualize imported data
-- save queries and chart settings
-- import/export queries and chart settings to/from a JSON file
-- manipulate saved queries (rename, duplicate, delete)
-- set predefined queries available for all users of sqliteviz on your server (read more about predefind queries on [Wiki][10])
-- export modified SQLite database
-- use it offline
+With sqliteviz you can:
+- run SQL queries against a SQLite database and create [Plotly][11] charts and pivot tables based on the result sets
+- import a CSV file into a SQLite database and visualize imported data
+- manage inquiries and run them against different databases
+- import/export inquiries to/from a JSON file
+- export a modified SQLite database
+- use it offline from your OS application menu like any other desktop app
 
-## Get started
-The latest release of sqliteviz is running on [Github pages][6]. The simplest way to start is to use sqliteviz there.
+https://user-images.githubusercontent.com/24638357/128249848-f8fab0f5-9add-46e0-a9c1-dd5085a8623e.mp4
+
+## Quickstart
+The latest release of sqliteviz is deployed on GitHub Pages at [lana-k.github.io/sqliteviz][6].
 
 ## Wiki
 For user documentation, check out sqliteviz [Wiki][7].
@@ -26,15 +26,17 @@ For user documentation, check out sqliteviz [Wiki][7].
 It's a kind of middleground between [Plotly Falcon][1] and [Redash][2].
 
 ## Components
-It is built on top of [react-chart-editor][3], [sql.js][4] and [Vue-Codemirror][8] in [Vue.js][5]. CSV parsing is performed with [Papa Parse][9].
+It is built on top of [react-chart-editor][3], [PivotTable.js][12], [sql.js][4] and [Vue-Codemirror][8] in [Vue.js][5]. CSV parsing is performed with [Papa Parse][9].
 
 [1]: https://github.com/plotly/falcon
 [2]: https://github.com/getredash/redash
 [3]: https://github.com/plotly/react-chart-editor
 [4]: https://github.com/sql-js/sql.js
 [5]: https://github.com/vuejs/vue
-[6]: https://lana-k.github.io/sqliteviz
+[6]: https://lana-k.github.io/sqliteviz/
 [7]: https://github.com/lana-k/sqliteviz/wiki
 [8]: https://github.com/surmon-china/vue-codemirror#readme
 [9]: https://www.papaparse.com/
 [10]: https://github.com/lana-k/sqliteviz/wiki/Predefined-queries
+[11]: https://github.com/plotly/plotly.js
+[12]: https://github.com/nicolaskruchten/pivottable

karma.conf.js

@@ -141,7 +141,7 @@ module.exports = function (config) {
             ]
           },
           {
-            test: /\.worker\.js$/,
+            test: /worker\.js$/,
             loader: 'worker-loader'
           },
           {

lib/sql-js/.dockerignore

@@ -0,0 +1,2 @@
+benchmark
+dist

lib/sql-js/Dockerfile

@@ -0,0 +1,9 @@
+FROM emscripten/emsdk:2.0.24
+
+WORKDIR /tmp/build
+
+COPY configure.py .
+RUN python3.8 configure.py
+
+COPY build.py .
+RUN python3.8 build.py

lib/sql-js/README.md

@@ -0,0 +1,73 @@
+# SQLite WebAssembly build
+
+This directory contains Docker-based build script, `make.sh`, that builds
+a custom version of [sql.js][1]. It allows sqliteviz to have more recent
+version of SQLite build with a number of useful extensions.
+
+`Makefile` from [sql.js][1] is rewritten as more comprehensible `configure.py`
+ and `build.py` Python scripts that run in `emscripten/emsdk` Docker container.
+
+## Extension
+
+SQLite [amalgamation][2] extensions included:
+
+1. [FTS5][4] -- virtual table module that provides full-text search
+   functionality
+
+SQLite [miscellaneous extensions][3] included:
+
+1. `generate_series` table-valued [series function][6] ([series.c][7])
+2. `transitive_closure` virtual table for
+   [Querying Tree Structures in SQLite][11] ([closure.c][8])
+3. `uuid`, `uuid_str` and `uuid_blob` RFC-4122 UUID functions ([uuid.c][9])
+4. `regexp` (hence `REGEXP` operator) and `regexpi` functions ([regexp.c][10])
+
+SQLite 3rd party extensions included:
+
+1. [pivot_vtab][5] -- a pivot virtual table
+
+To ease the step to have working clone locally, the build is committed into
+the repository.
+
+## Build method
+
+Basically it's extended amalgamation and `SQLITE_EXTRA_INIT` concisely
+described in [this message from SQLite Forum][12]:
+
+> Simply append it to the end of the amalgamation file. The real problem is
+> how you get the init function called. The easiest way (to me at any rate) is
+> to append a function (after the extensions you want to add are all appended)
+> that adds the init function for each extension to the auto extension list
+> for new connections, and set the pre-processor symbol SQLITE_EXTRA_INIT to
+> the name of this function. [...]
+>
+> An example `SQLITE_EXTRA_INIT` function looks like this:
+>
+> ```
+> int core_init(const char* dummy)
+> {
+>    int nErr = 0;
+>
+>    nErr += sqlite3_auto_extension((void*)sqlite3_autobusy_init);
+>    nErr += sqlite3_auto_extension((void*)sqlite3_ipaddress_init);
+>
+>    return nErr ? SQLITE_ERROR : SQLITE_OK;
+> }
+> ```
+>
+> so you would then define `SQLITE_EXTRA_INIT=core_init` when compiling the
+> amalgamation code and the extensions would thereafter be automatically
+> initialized on each connection.
+
+[1]:  https://github.com/sql-js/sql.js
+[2]:  https://sqlite.org/amalgamation.html
+[3]:  https://sqlite.org/src/dir?ci=trunk&name=ext/misc
+[4]:  https://sqlite.org/fts5.html
+[5]:  https://github.com/jakethaw/pivot_vtab
+[6]:  https://sqlite.org/series.html
+[7]:  https://sqlite.org/src/file/ext/misc/series.c
+[8]:  https://sqlite.org/src/file/ext/misc/closure.c
+[9]:  https://sqlite.org/src/file/ext/misc/uuid.c
+[10]: https://sqlite.org/src/file/ext/misc/regexp.c
+[11]: https://charlesleifer.com/blog/querying-tree-structures-in-sqlite-using-python-and-the-transitive-closure-extension/
+[12]: https://sqlite.org/forum/forumpost/6ad7d4f4bebe5e06?raw

lib/sql-js/benchmark/.gitignore

@@ -0,0 +1,4 @@
+/lib/build-*
+/lib/dist
+/build-*-result.json
+/sample.csv

lib/sql-js/benchmark/Dockerfile

@@ -0,0 +1,19 @@
+FROM node:12-buster
+
+RUN set -ex; \
+    echo 'deb http://deb.debian.org/debian unstable main' \
+        > /etc/apt/sources.list.d/unstable.list; \
+    apt-get update; \
+    apt-get install -y -t unstable firefox; \
+    apt-get install -y chromium
+
+WORKDIR /tmp/build
+
+COPY package.json ./
+COPY lib/dist lib/dist
+COPY lib/package.json lib/package.json
+RUN npm install
+
+COPY . .
+
+CMD npm run benchmark

lib/sql-js/benchmark/README.md

@@ -0,0 +1,14 @@
+# SQLite WebAssembly build micro-benchmark
+
+This directory contains a micro-benchmark for evaluating SQLite
+WebAssembly builds performance on typical SQL queries, run from
+`make.sh` script. It can also serve as a smoke test.
+
+The benchmark operates on a set of SQLite WebAssembly builds expected
+in `lib/build-$NAME` directories each containing `sql-wasm.js` and
+`sql-wasm.wasm`. Then it creates a Docker image for each, and runs
+the benchmark in Firefox and Chromium using Karma in the container.
+
+After successful run, the benchmark result of each build is contained
+in `build-$NAME-result.json`. The JSON result files can be analysed
+using `result-analysis.ipynb` Jupyter notebook.

lib/sql-js/benchmark/karma.conf.js

@@ -0,0 +1,52 @@
+module.exports = function (config) {
+  const timeout = 15 * 60 * 1000
+  config.set({
+
+    frameworks: ['mocha'],
+
+    files: [
+      'suite.js',
+      { pattern: 'node_modules/sql.js/dist/sql-wasm.wasm', served: true, included: false },
+      { pattern: 'sample.csv', served: true, included: false }
+    ],
+
+    reporters: ['progress', 'json-to-file'],
+
+    singleRun: true,
+
+    customLaunchers: {
+      ChromiumHeadlessNoSandbox: { base: 'ChromiumHeadless', flags: ['--no-sandbox'] }
+    },
+    browsers: ['ChromiumHeadlessNoSandbox', 'FirefoxHeadless'],
+    concurrency: 1,
+
+    browserDisconnectTimeout: timeout,
+    browserNoActivityTimeout: timeout,
+    captureTimeout: timeout,
+    browserSocketTimeout: timeout,
+    pingTimeout: timeout,
+    client: {
+      captureConsole: true,
+      mocha: { timeout: timeout }
+    },
+
+    logLevel: config.LOG_INFO,
+    browserConsoleLogOptions: { terminal: true, level: config.LOG_INFO },
+
+    preprocessors: { 'suite.js': [ 'webpack' ] },
+    webpack: {
+      mode: 'development',
+      module: {
+        noParse: [ __dirname + '/node_modules/benchmark/benchmark.js' ]
+      },
+      node: { fs: 'empty' }
+    },
+
+    proxies: {
+      '/sql-wasm.wasm': '/base/node_modules/sql.js/dist/sql-wasm.wasm'
+    },
+
+    jsonToFileReporter: { outputPath: '.', fileName: 'suite-result.json' }
+
+  })
+}

lib/sql-js/benchmark/lib/package.json

@@ -0,0 +1,5 @@
+{
+  "name": "sql.js",
+  "main": "./dist/sql-wasm.js",
+  "private": true
+}

lib/sql-js/benchmark/make.sh

@@ -0,0 +1,21 @@
+#!/bin/bash -e
+
+if [ ! -f sample.csv ]; then
+  wget --header="accept-encoding: gzip" -q -O- \
+    https://github.com/plotly/datasets/raw/547090bd/wellspublic.csv \
+    | gunzip -c > sample.csv
+fi
+
+for d in lib/build-* ; do
+  rm -r lib/dist || true
+  cp -r $d lib/dist
+
+  name=$(basename $d)
+  docker build -t sqliteviz/sqljs-benchmark:$name .
+  docker rm sqljs-benchmark-$name 2> /dev/null || true
+  docker run -it --name sqljs-benchmark-$name sqliteviz/sqljs-benchmark:$name
+  docker cp sqljs-benchmark-$name:/tmp/build/suite-result.json ${name}-result.json
+  docker rm sqljs-benchmark-$name
+done
+
+rm -r lib/dist

lib/sql-js/benchmark/package.json

@@ -0,0 +1,23 @@
+{
+  "name": "sqlite-webassembly-microbenchmark",
+  "private": true,
+  "dependencies": {
+    "@babel/core" : "^7.14.8",
+    "babel-loader": "^8.2.2",
+    "benchmark": "^2.1.4",
+    "lodash": "^4.17.4",
+    "papaparse": "^5.3.1",
+    "mocha": "^9.0.3",
+    "karma": "^6.3.4",
+    "karma-chrome-launcher": "^3.1.0",
+    "karma-firefox-launcher": "^2.1.1",
+    "karma-json-to-file-reporter" : "^1.0.1",
+    "karma-mocha": "^2.0.1",
+    "karma-webpack": "^4.0.2",
+    "webpack": "^4.46.0",
+    "sql.js": "file:./lib"
+  },
+  "scripts": {
+    "benchmark": "karma start karma.conf.js"
+  }
+}

lib/sql-js/benchmark/suite.js

@@ -0,0 +1,140 @@
+import benchmark from 'benchmark'
+import initSqlJs from 'sql.js'
+import lodash from 'lodash'
+import Papa from 'papaparse'
+import useragent from 'ua-parser-js'
+
+
+describe('SQLite build benchmark', function () {
+  let parsedCsv
+  let sqlModule
+  let selectDb
+
+  before(async function () {
+    parsedCsv = await parseCsv('http://localhost:9876/base/sample.csv')
+    sqlModule = await initSqlJs()
+
+    selectDb = new sqlModule.Database()
+    importToTable(selectDb, parsedCsv)
+  })
+
+  function benchmarkImport () {
+    const db = new sqlModule.Database()
+    try {
+      importToTable(db, parsedCsv)
+    } finally {
+      db.close()
+    }
+  }
+
+  function benchmarkSelect () {
+    const result = selectDb.exec(`
+      SELECT county, AVG(avg_depth) avg_depth_c
+      FROM (
+        SELECT s.county, s.town, COUNT(*) cnt, AVG(s.DrilledDepth) avg_depth
+        FROM csv_import s
+        JOIN csv_import USING(hole)
+        WHERE s.town IS NOT NULL
+        GROUP BY 1, 2
+        ORDER BY 4 DESC
+      )
+      GROUP BY 1
+      ORDER BY 2 DESC
+    `)
+    console.assert(result.values.length == 56, 'Unexpected size of result set')
+  }
+
+  it('run', async function () {
+    const suite = createSuite()
+    suite.add('import', { initCount: 3, minSamples: 50, fn: benchmarkImport })
+    suite.add('select', { initCount: 3, minSamples: 50, fn: benchmarkSelect })
+    await run(suite)
+  })
+
+})
+
+
+function importToTable (db, parsedCsv, chunkSize = 1024) {
+  const columnListString = parsedCsv.meta.fields.join(', ')
+  db.exec(`CREATE TABLE csv_import(${columnListString})`)
+
+  const params = parsedCsv.meta.fields.map(name => '?').join(', ')
+  const insertStmt = db.prepare(`INSERT INTO csv_import VALUES(${params})`)
+  chunkArray(parsedCsv.data, chunkSize).map(function (chunk) {
+    db.exec('BEGIN')
+    chunk.map(row => insertStmt.run(Object.values(row)))
+    db.exec('COMMIT')
+  })
+}
+
+
+class PromiseWrapper {
+  constructor() {
+    this.promise = new Promise((resolve, reject) => {
+      this.reject = reject
+      this.resolve = resolve
+    })
+  }
+}
+
+function parseCsv(url) {
+  return new Promise((resolve, reject) => {
+    Papa.parse(url, {
+      header: true,
+      download: true,
+      skipEmptyLines: 'greedy',
+      complete: results => resolve(results),
+      error: (error, file) => reject(error)
+    })
+  })
+}
+
+function chunkArray (arr, size) {
+  return arr.reduce(function (result, value, index) {
+    const chunkIndex = Math.floor(index / size)
+
+    if(!(chunkIndex in result)) {
+      result[chunkIndex] = []
+    }
+    result[chunkIndex].push(value)
+
+    return result
+  }, [])
+}
+
+
+function createSuite () {
+  // Combined workaround from:
+  // - https://github.com/bestiejs/benchmark.js/issues/106
+  // - https://github.com/bestiejs/benchmark.js/issues/237
+
+  // Benchmark could not pick up lodash otherwise
+  const bm = benchmark.runInContext({ _: lodash })
+  // Avoid `ReferenceError: Benchmark is not defined` error because Benchmark is assumed
+  // to be in window
+  window.Benchmark = bm
+
+  return new bm.Suite()
+}
+
+function run (suite) {
+  const suiteResult = new PromiseWrapper()
+  suite
+    .on('cycle', function (event) {
+      console.info(String(event.target))
+    })
+    .on('complete', function () {
+      console.log(JSON.stringify({
+        browser: useragent(navigator.userAgent).browser,
+        result: this.filter('successful')
+      }))
+      suiteResult.resolve()
+    })
+    .on('error', function (event) {
+      console.error('Benchmark failed', String(event.target))
+      suiteResult.reject()
+    })
+    .run({async: true})
+
+  return suiteResult.promise
+}

lib/sql-js/build.py

@@ -0,0 +1,86 @@
+import logging
+import subprocess
+from pathlib import Path
+
+
+cflags = (
+    '-O2',
+    '-DSQLITE_DEFAULT_CACHE_SIZE=-65536',  # 64 MiB
+    '-DSQLITE_DEFAULT_MEMSTATUS=0',
+    '-DSQLITE_DEFAULT_SYNCHRONOUS=0',
+    '-DSQLITE_DISABLE_LFS',
+    '-DSQLITE_DQS=0',
+    '-DSQLITE_ENABLE_FTS3',
+    '-DSQLITE_ENABLE_FTS3_PARENTHESIS',
+    '-DSQLITE_ENABLE_FTS5',
+    '-DSQLITE_ENABLE_JSON1',
+    '-DSQLITE_ENABLE_NORMALIZE',
+    '-DSQLITE_EXTRA_INIT=extra_init',
+    '-DSQLITE_OMIT_DEPRECATED',
+    '-DSQLITE_OMIT_LOAD_EXTENSION',
+    '-DSQLITE_OMIT_SHARED_CACHE',
+    '-DSQLITE_THREADSAFE=0',
+)
+emflags = (
+    # Base
+    '--memory-init-file', '0',
+    '-s', 'RESERVED_FUNCTION_POINTERS=64',
+    '-s', 'ALLOW_TABLE_GROWTH=1',
+    '-s', 'SINGLE_FILE=0',
+    # WASM
+    '-s', 'WASM=1',
+    '-s', 'ALLOW_MEMORY_GROWTH=1',
+    # Optimisation
+    '-s', 'INLINING_LIMIT=50',
+    '-O3',
+    '-flto',
+    # sql.js
+    '-s', 'EXPORTED_FUNCTIONS=@src/sqljs/exported_functions.json',
+    '-s', 'EXPORTED_RUNTIME_METHODS=@src/sqljs/exported_runtime_methods.json',
+    '--pre-js', 'src/sqljs/api.js',
+)
+
+
+def build(src: Path, dst: Path):
+    out = Path('out')
+    out.mkdir()
+
+    logging.info('Building LLVM bitcode for sqlite3.c')
+    subprocess.check_call([
+        'emcc',
+        *cflags,
+        '-c', src / 'sqlite3.c',
+        '-o', out / 'sqlite3.bc',
+    ])
+    logging.info('Building LLVM bitcode for extension-functions.c')
+    subprocess.check_call([
+        'emcc',
+        *cflags,
+        '-c', src / 'extension-functions.c',
+        '-o', out / 'extension-functions.bc',
+    ])
+
+    logging.info('Building WASM from bitcode')
+    subprocess.check_call([
+        'emcc',
+        *emflags,
+        out / 'sqlite3.bc',
+        out / 'extension-functions.bc',
+        '-o', out / 'sql-wasm.js',
+    ])
+
+    logging.info('Post-processing build and copying to dist')
+    (out / 'sql-wasm.wasm').rename(dst / 'sql-wasm.wasm')
+    with (dst / 'sql-wasm.js').open('w') as f:
+        f.write((src / 'sqljs' / 'shell-pre.js').read_text())
+        f.write((out / 'sql-wasm.js').read_text())
+        f.write((src / 'sqljs' / 'shell-post.js').read_text())
+
+
+if __name__ == '__main__':
+    logging.basicConfig(level='INFO', format='%(asctime)s %(levelname)s %(name)s %(message)s')
+
+    src = Path('src')
+    dst = Path('dist')
+    dst.mkdir()
+    build(src, dst)

lib/sql-js/configure.py

@@ -0,0 +1,105 @@
+import logging
+import shutil
+import subprocess
+import sys
+import zipfile
+from io import BytesIO
+from pathlib import Path
+from urllib import request
+
+
+amalgamation_url = 'https://sqlite.org/2021/sqlite-amalgamation-3360000.zip'
+
+# Extension-functions
+# ===================
+# It breaks amalgamation if appended as other extension because it redefines
+# several functions, so build it separately. Note that sql.js registers these
+# extension functions by calling ``registerExtensionFunctions`` itself.
+contrib_functions_url = 'https://sqlite.org/contrib/download/extension-functions.c?get=25'
+
+extension_urls = (
+    # Miscellaneous extensions
+    # ========================
+    ('https://sqlite.org/src/raw/c6bd5d24?at=series.c', 'sqlite3_series_init'),
+    ('https://sqlite.org/src/raw/dbfd8543?at=closure.c', 'sqlite3_closure_init'),
+    ('https://sqlite.org/src/raw/5bb2264c?at=uuid.c', 'sqlite3_uuid_init'),
+    ('https://sqlite.org/src/raw/5853b0e5?at=regexp.c', 'sqlite3_regexp_init'),
+    # Third-party extension
+    # =====================
+    ('https://github.com/jakethaw/pivot_vtab/raw/08ab0797/pivot_vtab.c', 'sqlite3_pivotvtab_init'),
+)
+
+sqljs_url = 'https://github.com/sql-js/sql.js/archive/refs/tags/v1.5.0.zip'
+
+
+def _generate_extra_init_c_function(init_function_names):
+    auto_ext_calls = '\n'.join([
+        'nErr += sqlite3_auto_extension((void*){});'.format(init_fn)
+        for init_fn in init_function_names
+    ])
+    return '''
+        int extra_init(const char* dummy)
+        {
+            int nErr = 0;
+            %s
+            return nErr ? SQLITE_ERROR : SQLITE_OK;
+        }
+    ''' % auto_ext_calls
+
+
+def _get_amalgamation(tgt: Path):
+    logging.info('Downloading and extracting SQLite amalgamation %s', amalgamation_url)
+    archive = zipfile.ZipFile(BytesIO(request.urlopen(amalgamation_url).read()))
+    archive_root_dir = zipfile.Path(archive, archive.namelist()[0])
+    for zpath in archive_root_dir.iterdir():
+        with zpath.open() as fr, (tgt / zpath.name).open('wb') as fw:
+            shutil.copyfileobj(fr, fw)
+
+
+def _get_contrib_functions(tgt: Path):
+    request.urlretrieve(contrib_functions_url, tgt / 'extension-functions.c')
+
+
+def _get_extensions(tgt: Path):
+    init_functions = []
+    sqlite3_c = tgt / 'sqlite3.c'
+    with sqlite3_c.open('ab') as f:
+        for url, init_fn in extension_urls:
+            logging.info('Downloading and appending to amalgamation %s', url)
+            with request.urlopen(url) as resp:
+                shutil.copyfileobj(resp, f)
+            init_functions.append(init_fn)
+
+        logging.info('Appending SQLITE_EXTRA_INIT to amalgamation')
+        f.write(_generate_extra_init_c_function(init_functions).encode())
+
+
+def _get_sqljs(tgt: Path):
+    logging.info('Downloading and extracting sql.js %s', sqljs_url)
+    archive = zipfile.ZipFile(BytesIO(request.urlopen(sqljs_url).read()))
+    archive_root_dir = zipfile.Path(archive, archive.namelist()[0])
+    (tgt / 'sqljs').mkdir()
+    for zpath in (archive_root_dir / 'src').iterdir():
+        with zpath.open() as fr, (tgt / 'sqljs' / zpath.name).open('wb') as fw:
+            shutil.copyfileobj(fr, fw)
+
+
+def configure(tgt: Path):
+    _get_amalgamation(tgt)
+    _get_contrib_functions(tgt)
+    _get_extensions(tgt)
+    _get_sqljs(tgt)
+
+    subprocess.check_call(['emcc', '--version'])
+
+
+if __name__ == '__main__':
+    if sys.version_info < (3, 8):
+        print('Python 3.8 or higher is expected', file=sys.stderr)
+        sys.exit(1)
+
+    logging.basicConfig(level='INFO', format='%(asctime)s %(levelname)s %(name)s %(message)s')
+
+    src = Path('src')
+    src.mkdir()
+    configure(src)

lib/sql-js/make.sh

@@ -0,0 +1,9 @@
+#!/bin/bash -e
+
+docker build -t sqliteviz/sqljs .
+
+rm -r dist || true
+
+CONTAINER=$(docker create sqliteviz/sqljs)
+docker cp $CONTAINER:/tmp/build/dist .
+docker rm $CONTAINER

lib/sql-js/package.json

@@ -0,0 +1,5 @@
+{
+  "name": "sql.js",
+  "main": "./dist/sql-wasm.js",
+  "private": true
+}

package.json

@@ -1,6 +1,6 @@
 {
   "name": "sqliteviz",
-  "version": "1.0.0",
+  "version": "0.15.2",
   "license": "Apache-2.0",
   "private": true,
   "scripts": {
@@ -12,20 +12,24 @@
   "dependencies": {
     "codemirror": "^5.57.0",
     "core-js": "^3.6.5",
-    "debounce": "^1.2.0",
+    "html2canvas": "^1.1.4",
+    "jquery": "^3.6.0",
     "nanoid": "^3.1.12",
-    "papaparse": "^5.3.0",
-    "plotly.js": "^1.57.1",
+    "papaparse": "^5.3.1",
+    "pivottable": "^2.23.0",
+    "plotly.js": "^1.58.4",
     "promise-worker": "^2.0.1",
     "react": "^16.13.1",
-    "react-chart-editor": "^0.42.0",
+    "react-chart-editor": "^0.45.0",
     "react-dom": "^16.13.1",
-    "sql.js": "^1.3.0",
+    "sql.js": "file:./lib/sql-js",
     "sqlite-parser": "^1.0.1",
     "vue": "^2.6.11",
     "vue-codemirror": "^4.0.6",
     "vue-js-modal": "^2.0.0-rc.6",
+    "vue-multiselect": "^2.1.6",
     "vue-router": "^3.2.0",
+    "vue2-teleport": "^1.0.1",
     "vuejs-paginate": "^2.1.0",
     "vuera": "^0.2.7",
     "vuex": "^3.4.0"

public/index.html

@@ -8,7 +8,7 @@
     <link rel="manifest" href="<%= BASE_URL %>manifest.webmanifest">
     <title><%= htmlWebpackPlugin.options.title %></title>
     <style>
-      #loading-wrapper {
+      #sqliteviz-loading-wrapper {
         position: fixed;
         width: 100%;
         height: 100%;
@@ -17,7 +17,7 @@
         background-color: white;
       }
     
-      #loading-text {
+      #sqliteviz-loading-text {
         display: block;
         position: absolute;
         top: 50%;
@@ -28,7 +28,7 @@
         font-size: 20px;
       }
       
-      .svg-container {
+      #sqliteviz-loading-wrapper svg {
         display: block;
         position: absolute;
         left: 50%;
@@ -36,7 +36,7 @@
         transform: translate(-50%, -50%);
       }
 
-      .loader-svg {
+      #sqliteviz-loading-wrapper circle {
         position: absolute;
         left: 0; right: 0; top: 0; bottom: 0;
         fill: none;
@@ -45,16 +45,16 @@
         stroke: #119DFF;
       }
 
-      .loader-svg.bg {
+      #sqliteviz-loading-wrapper circle.bg {
         stroke: #C8D4E3;
       }
 
-      .loader-svg.front {
+      #sqliteviz-loading-wrapper circle.front {
         stroke-dasharray: 402px;
-        animation: loading 2s linear 0s infinite;
+        animation: sqliteviz-loading 2s linear 0s infinite;
       }
 
-      @keyframes loading {
+      @keyframes sqliteviz-loading {
         0% {
           stroke-dasharray: 100px 402px;
           stroke-dashoffset: 0;
@@ -75,17 +75,17 @@
       <strong>We're sorry but <%= htmlWebpackPlugin.options.title %> doesn't work properly without JavaScript enabled. Please enable it to continue.</strong>
     </noscript>
     <div id="app">
-      <div id="loading-wrapper">
-        <div id="loading-text">LOADING</div>
-        <svg class="svg-container" height="170" width="170" viewBox="0 0 170 170">
+      <div id="sqliteviz-loading-wrapper">
+        <div id="sqliteviz-loading-text">LOADING</div>
+        <svg height="170" width="170" viewBox="0 0 170 170">
           <circle
-            class="loader-svg bg"
+            class="bg"
             cx="85"
             cy="85"
             r="80"
           />
           <circle
-            class="loader-svg front"
+            class="front"
             cx="85"
             cy="85"
             r="80"

public/manifest.webmanifest

@@ -3,6 +3,16 @@
   "description": "Sqliteviz is a single-page application for fully client-side visualisation of SQLite databases or CSV.",
   "display": "fullscreen",
   "icons": [
+    {
+      "src": "favicon.png",
+      "sizes": "32x32",
+      "type": "image/png"
+    },
+    {
+      "src": "Logo48x48.png",
+      "sizes": "48x48",
+      "type": "image/png"
+    },
     {
       "src": "Logo192x192.png",
       "sizes": "192x192",

src/App.vue

@@ -60,4 +60,7 @@ button,
 body {
   margin: 0;
 }
+.CodeMirror-hints {
+  z-index: 999 !important;
+}
 </style>

src/assets/images/arrow-hover.svg

@@ -0,0 +1,3 @@
+<svg width="20" height="20" viewBox="0 0 20 20" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M4.51581 7.54801C4.95181 7.10201 5.55881 7.06701 6.09181 7.54801L9.99981 11.295L13.9078 7.54801C14.4408 7.06701 15.0488 7.10201 15.4818 7.54801C15.9178 7.99301 15.8898 8.74501 15.4818 9.16301C15.0758 9.58101 10.7868 13.665 10.7868 13.665C10.5698 13.888 10.2848 14 9.99981 14C9.71481 14 9.42981 13.888 9.21081 13.665C9.21081 13.665 4.92381 9.58101 4.51581 9.16301C4.10781 8.74501 4.07981 7.99301 4.51581 7.54801V7.54801Z" fill="#119DFF"/>
+</svg>

src/assets/images/arrow.svg

@@ -0,0 +1,3 @@
+<svg width="20" height="20" viewBox="0 0 20 20" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M4.51581 7.54801C4.95181 7.10201 5.55881 7.06701 6.09181 7.54801L9.99981 11.295L13.9078 7.54801C14.4408 7.06701 15.0488 7.10201 15.4818 7.54801C15.9178 7.99301 15.8898 8.74501 15.4818 9.16301C15.0758 9.58101 10.7868 13.665 10.7868 13.665C10.5698 13.888 10.2848 14 9.99981 14C9.71481 14 9.42981 13.888 9.21081 13.665C9.21081 13.665 4.92381 9.58101 4.51581 9.16301C4.10781 8.74501 4.07981 7.99301 4.51581 7.54801V7.54801Z" fill="#C8D4E3"/>
+</svg>

src/assets/images/delete-tag-hover.svg

@@ -0,0 +1,3 @@
+<svg width="14" height="14" viewBox="0 0 14 14" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M10.0436 10.3943C9.7153 10.7226 9.1833 10.7226 8.8557 10.3943L7 8.27329L5.1443 10.3936C4.816 10.7219 4.284 10.7219 3.9564 10.3936C3.6281 10.0653 3.6281 9.53329 3.9564 9.20569L5.887 7.00069L3.9557 4.79429C3.6274 4.46599 3.6274 3.93469 3.9557 3.60639C4.284 3.27809 4.8153 3.27809 5.1436 3.60639L7 5.72809L8.8557 3.60639C9.184 3.27809 9.7153 3.27809 10.0436 3.60639C10.3719 3.93469 10.3719 4.46669 10.0436 4.79429L8.113 7.00069L10.0436 9.20569C10.3719 9.53399 10.3719 10.066 10.0436 10.3943V10.3943Z" fill="#DE350B"/>
+</svg>

src/assets/images/delete-tag.svg

@@ -0,0 +1,3 @@
+<svg width="14" height="14" viewBox="0 0 14 14" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M10.0436 10.3945C9.7153 10.7228 9.1833 10.7228 8.8557 10.3945L7 8.27348L5.1443 10.3938C4.816 10.7221 4.284 10.7221 3.9564 10.3938C3.6281 10.0655 3.6281 9.53348 3.9564 9.20588L5.887 7.00088L3.9557 4.79448C3.6274 4.46618 3.6274 3.93488 3.9557 3.60658C4.284 3.27828 4.8153 3.27828 5.1436 3.60658L7 5.72828L8.8557 3.60658C9.184 3.27828 9.7153 3.27828 10.0436 3.60658C10.3719 3.93488 10.3719 4.46688 10.0436 4.79448L8.113 7.00088L10.0436 9.20588C10.3719 9.53418 10.3719 10.0662 10.0436 10.3945V10.3945Z" fill="#506784"/>
+</svg>

src/assets/images/sort.svg

@@ -0,0 +1,11 @@
+<svg width="6" height="12" viewBox="0 0 6 12" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g clip-path="url(#clip0)">
+<path d="M2.99932 -3.63032e-05C2.75092 -3.63032e-05 2.54932 0.201563 2.54932 0.449964L2.54932 11.55C2.54932 11.7984 2.75092 12 2.99932 12C3.24772 12 3.44932 11.7984 3.44932 11.55L3.44932 0.449964C3.44932 0.201563 3.24772 -3.63032e-05 2.99932 -3.63032e-05Z" fill="#506784"/>
+<path d="M2.99915 1.80492e-05C2.8839 1.80492e-05 2.76865 0.0438534 2.68109 0.132073L0.581055 2.232C0.405273 2.40789 0.405273 2.69287 0.581055 2.86865C0.756946 3.04443 1.04193 3.04443 1.21771 2.86865L2.99969 1.08667L4.78168 2.86865C4.95746 3.04443 5.24255 3.04443 5.41833 2.86865C5.59412 2.69287 5.59412 2.40789 5.41833 2.232L3.3183 0.132073C3.22953 0.0438534 3.11428 1.80492e-05 2.99915 1.80492e-05V1.80492e-05Z" fill="#506784"/>
+</g>
+<defs>
+<clipPath id="clip0">
+<rect width="6" height="12" fill="white" transform="matrix(1 0 0 -1 0 12)"/>
+</clipPath>
+</defs>
+</svg>

src/assets/styles/multiselect.css

@@ -0,0 +1,136 @@
+.sqliteviz-select,
+.sqliteviz-select .multiselect__tags {
+  min-height: 36px;
+  color: var(--color-text-base);
+}
+
+.sqliteviz-select .multiselect__select {
+  height: 34px;
+  min-height: 34px;
+  padding: 6px;
+  width: 32px;
+  height: 32px;
+  margin-top: 1px;
+}
+
+.sqliteviz-select .multiselect__tags {
+  border-radius: var(--border-radius-medium-2);
+  border: 1px solid var(--color-border);
+  padding: 4px 32px 0 6px;
+}
+
+.sqliteviz-select,
+.sqliteviz-select .multiselect__input,
+.sqliteviz-select .multiselect__single,
+.sqliteviz-select .multiselect__placeholder {
+  font-size: 12px;
+}
+
+.sqliteviz-select .multiselect__single,
+.sqliteviz-select .multiselect__placeholder,
+.sqliteviz-select .multiselect__input {
+  padding: 0;
+  margin-bottom: 0;
+  line-height: 28px;
+}
+
+.sqliteviz-select .multiselect__input {
+  width: 0 !important;
+  color: var(--color-text-base);
+}
+
+.sqliteviz-select.multiselect--active .multiselect__input {
+  width: auto !important;
+}
+
+.sqliteviz-select .multiselect__placeholder,
+.sqliteviz-select .multiselect__input::placeholder {
+  color: var(--color-text-light-2);
+}
+
+.sqliteviz-select .multiselect__option.multiselect__option--highlight {
+  background-color: var(--color-bg-light);
+  color: var(--color-text-active);
+}
+
+.sqliteviz-select .multiselect__tag {
+  background-color: var(--color-bg-light-4);
+  border: 1px solid var(--color-border);
+  border-radius: var(--border-radius-small);
+  color: var(--color-text-active);
+  font-size: 11.05px;
+  margin: 2px;
+}
+.sqliteviz-select .multiselect__tag-icon:after {
+  content: url('~@/assets/images/delete-tag.svg');
+  height: 14px;
+  width: 14px;
+}
+
+.sqliteviz-select .multiselect__tag-icon:focus:after,
+.sqliteviz-select .multiselect__tag-icon:hover:after {
+  content: url('~@/assets/images/delete-tag-hover.svg');
+}
+
+.sqliteviz-select .multiselect__tag-icon:focus,
+.sqliteviz-select .multiselect__tag-icon:hover {
+  background-color: var(--color-bg-danger);
+  border-radius: var(--border-radius-small);
+}
+
+.sqliteviz-select .multiselect__option {
+  min-height: 29px;
+  padding: 8px 12px;
+  line-height: 13px;
+}
+
+.sqliteviz-select .multiselect__option:after {
+  line-height: 29px;
+}
+
+.sqliteviz-select .multiselect__content-wrapper {
+  border-radius: var(--border-radius-medium-2);
+  border: 1px solid var(--color-border);
+  box-shadow: var(--shadow-1);
+  top: calc(100% - 1px);
+  max-height: 292px !important;
+}
+
+.sqliteviz-select.multiselect--above .multiselect__content-wrapper {
+  top: unset;
+  bottom: calc(100% - 1px);
+}
+
+.sqliteviz-select .multiselect__select:before {
+  content: url('~@/assets/images/arrow.svg');
+  border: none;
+  top: 0;
+}
+
+.sqliteviz-select.multiselect--active .multiselect__select {
+  transform: none;
+}
+
+.sqliteviz-select:hover .multiselect__tags {
+  border-color: var(--color-border-dark);
+}
+
+.sqliteviz-select .multiselect__select:hover:before {
+  content: url('~@/assets/images/arrow-hover.svg');
+}
+
+.sqliteviz-select.multiselect--active .multiselect__tags {
+  border-radius: var(--border-radius-medium-2);
+}
+
+.sqliteviz-select .multiselect__option  .no-results {
+  color: var(--color-text-light-2);
+}
+
+.sqliteviz-select.multiselect--disabled {
+  opacity: unset;
+}
+
+.sqliteviz-select.multiselect--disabled .multiselect__select {
+  background: unset;
+}

src/assets/styles/tables.css

@@ -1,11 +1,17 @@
 .rounded-bg {
-  padding: 40px 5px 5px;
+  padding: 35px 5px 5px;
   background-color: white;
   border-radius: 5px;
   position: relative;
   border: 1px solid var(--color-border-light);
   box-sizing: border-box;
 }
+
+.straight .rounded-bg {
+  border-radius: 0;
+  border-width: 0 0 1px 0;
+}
+
 .header-container {
   overflow: hidden;
   position: absolute;
@@ -18,6 +24,19 @@
   border-radius: 5px 5px 0 0;
 }
 
+.straight .header-container {
+  border-radius: 0;
+}
+
+.straight {
+  height: 100%;
+}
+
+.straight .rounded-bg {
+  /* 27 - height of table footer */
+  height: calc(100% - 27px);
+}
+
 @supports (-moz-appearance:none) {
   .header-container {
     top: 0;
@@ -32,22 +51,25 @@
 }
 .table-container {
   width: 100%;
+  max-height: 100%;
   overflow: auto;
 }
-table {
+table.sqliteviz-table {
   min-width: 100%;
-  margin-top: -40px;
+  margin-top: -35px;
   border-collapse: collapse;
 }
-thead th, .fixed-header {
+.sqliteviz-table thead th, .fixed-header {
   font-size: 14px;
   font-weight: 600;
   box-sizing: border-box;
   background-color: var(--color-bg-dark);
   color: var(--color-text-light);
   border-right: 1px solid var(--color-border-light);
+  overflow: hidden;
+  text-overflow: ellipsis;
 }
-tbody td {
+.sqliteviz-table tbody td {
   font-size: 13px;
   background-color:white;
   color: var(--color-text-base);
@@ -55,18 +77,20 @@ tbody td {
   border-bottom: 1px solid var(--color-border-light);
   border-right: 1px solid var(--color-border-light);
 }
-td, th, .fixed-header {
-  padding: 12px 24px;
+.sqliteviz-table td,
+.sqliteviz-table th,
+.fixed-header {
+  padding: 8px 24px;
   white-space: nowrap;
 }
 
-tbody tr td:last-child,
-thead tr th:last-child,
+.sqliteviz-table tbody tr td:last-child,
+.sqliteviz-table thead tr th:last-child,
 .header-container div .fixed-header:last-child {
   border-right: none;
 }
 
-td > div.cell-data {
+.sqliteviz-table td > div.cell-data {
   width: -webkit-max-content;
   width: -moz-max-content;
   width: max-content;

src/assets/styles/variables.css

@@ -11,6 +11,8 @@
   --color-blue-dark: #0D76BF;
   --color-blue-dark-2: #2A3F5F;
   --color-red: #EF553B;
+  --color-red-2: #DE350B;
+  --color-red-light: #FFBDAD;
   --color-yellow: #FBEFCB;
 
 
@@ -18,13 +20,16 @@
   --color-bg-light: var(--color-gray-light);
   --color-bg-light-2: var(--color-gray-light-2);
   --color-bg-light-3: var(--color-gray-light-5);
+  --color-bg-light-4: var(--color-gray-light-4);
   --color-bg-dark: var(--color-gray-dark);
   --color-bg-warning: var(--color-yellow);
-  --color-danger: var(--color-red);
+  --color-bg-danger: var(--color-red-light);
+  --color-danger: var(--color-red-2);
   --color-accent: var(--color-blue-medium);
   --color-accent-shade: var(--color-blue-dark);
   --color-border-light: var(--color-gray-light-2);
   --color-border: var(--color-gray-light-3);
+  --color-border-dark: var(--color-gray-medium);
   --color-text-light: var(--color-white);
   --color-text-light-2: var(--color-gray-medium);
   --color-text-base: var(--color-gray-dark);

src/components/Chart.vue

@@ -1,98 +0,0 @@
-<template>
-<div v-show="visible" class="chart-container">
-  <div class="warning chart-warning" v-show="!sqlResult && visible">
-    There is no data to build a chart. Run your sql query and make sure the result is not empty.
-  </div>
-  <PlotlyEditor
-    :data="state.data"
-    :layout="state.layout"
-    :frames="state.frames"
-    :config="{ editable: true, displaylogo: false }"
-    :dataSources="dataSources"
-    :dataSourceOptions="dataSourceOptions"
-    :plotly="plotly"
-    @onUpdate="update"
-    @onRender="go"
-    :useResizeHandler="true"
-    :debug="true"
-    :advancedTraceTypeSelector="true"
-    class="chart"
-    ref="plotlyEditor"
-    :style="{ height: !sqlResult ? 'calc(100% - 40px)' : '100%' }"
-  />
-</div>
-</template>
-
-<script>
-import plotly from 'plotly.js/dist/plotly'
-import 'react-chart-editor/lib/react-chart-editor.min.css'
-
-import PlotlyEditor from 'react-chart-editor'
-import chart from '@/chart'
-import dereference from 'react-chart-editor/lib/lib/dereference'
-
-export default {
-  name: 'Chart',
-  props: ['sqlResult', 'initChart', 'visible'],
-  components: {
-    PlotlyEditor
-  },
-  data () {
-    return {
-      plotly: plotly,
-      state: this.initChart || {
-        data: [],
-        layout: {},
-        frames: []
-      }
-    }
-  },
-  computed: {
-    dataSources () {
-      return chart.getDataSourcesFromSqlResult(this.sqlResult)
-    },
-    dataSourceOptions () {
-      return chart.getOptionsFromDataSources(this.dataSources)
-    }
-  },
-  watch: {
-    dataSources () {
-      // we need to update state.data in order to update the graph
-      // https://github.com/plotly/react-chart-editor/issues/948
-      dereference(this.state.data, this.dataSources)
-    }
-  },
-  methods: {
-    go (data, layout, frames) {
-      // TODO: check changes and enable Save button if needed
-    },
-    update (data, layout, frames) {
-      this.state = { data, layout, frames }
-      this.$emit('update')
-    },
-    getChartStateForSave () {
-      return chart.getChartStateForSave(this.state, this.dataSources)
-    }
-  }
-}
-</script>
-
-<style scoped>
-.chart-container {
-  height: calc(100% - 89px);
-}
-
-.chart-warning {
-  height: 40px;
-  line-height: 40px;
-}
-
-.chart {
-  border-top: 1px solid var(--color-border);
-  min-height: 242px;
-}
-
->>> .editor_controls .sidebar__item:before {
-  width: 0;
-}
-</style>

src/components/CsvImport/DelimiterSelector/index.vue

@@ -40,7 +40,7 @@
 </template>
 
 <script>
-import ascii from '@/ascii'
+import ascii from './ascii'
 import DropDownChevron from '@/components/svg/dropDownChevron'
 import ClearIcon from '@/components/svg/clear'
 

src/components/CsvImport/csv.js

@@ -8,22 +8,37 @@ const hintsByCode = {
 
 export default {
   getResult (source) {
-    const result = {}
+    const result = {
+      columns: []
+    }
+    const values = {}
     if (source.meta.fields) {
-      result.columns = source.meta.fields
-      result.values = source.data.map(row => {
-        const resultRow = []
-        result.columns.forEach(col => { resultRow.push(row[col]) })
-        return resultRow
+      source.meta.fields.forEach(col => {
+        const colName = col.trim()
+        result.columns.push(colName)
+        values[colName] = source.data.map(row => {
+          let value = row[col]
+          if (value instanceof Date) {
+            value = value.toISOString()
+          }
+          return value
+        })
       })
     } else {
-      result.values = source.data
-      result.columns = []
-      for (let i = 1; i <= source.data[0].length; i++) {
-        result.columns.push(`col${i}`)
+      for (let i = 0; i <= source.data[0].length - 1; i++) {
+        const colName = `col${i + 1}`
+        result.columns.push(colName)
+        values[colName] = source.data.map(row => {
+          let value = row[i]
+          if (value instanceof Date) {
+            value = value.toISOString()
+          }
+          return value
+        })
       }
     }
 
+    result.values = values
     return result
   },
 
@@ -46,7 +61,8 @@ export default {
           const res = {
             data: this.getResult(results),
             delimiter: results.meta.delimiter,
-            hasErrors: false
+            hasErrors: false,
+            rowCount: results.data.length
           }
           res.messages = results.errors.map(msg => {
             msg.type = msg.code === 'UndetectableDelimiter' ? 'info' : 'error'

src/components/CsvImport/index.vue

@@ -0,0 +1,382 @@
+<template>
+  <modal
+    :name="dialogName"
+    classes="dialog"
+    height="auto"
+    width="80%"
+    scrollable
+    :clickToClose="false"
+  >
+    <div class="dialog-header">
+      CSV import
+      <close-icon @click="cancelCsvImport" :disabled="disableDialog"/>
+    </div>
+    <div class="dialog-body">
+      <text-field
+        label="Table name"
+        v-model="tableName"
+        width="484px"
+        :disabled="disableDialog"
+        :error-msg="tableNameError"
+        id="csv-table-name"
+      />
+      <div class="chars">
+        <delimiter-selector
+          v-model="delimiter"
+          width="210px"
+          class="char-input"
+          @input="previewCsv"
+          :disabled="disableDialog"
+        />
+        <text-field
+          label="Quote char"
+          hint="The character used to quote fields."
+          v-model="quoteChar"
+          width="93px"
+          :disabled="disableDialog"
+          class="char-input"
+          id="quote-char"
+        />
+        <text-field
+          label="Escape char"
+          hint='The character used to escape the quote character within a field (e.g. "column with ""quotes"" in text").'
+          max-hint-width="242px"
+          v-model="escapeChar"
+          width="93px"
+          :disabled="disableDialog"
+          class="char-input"
+          id="escape-char"
+        />
+      </div>
+      <check-box
+        @click="header = $event"
+        :init="true"
+        label="Use first row as column headers"
+        :disabled="disableDialog"
+      />
+      <sql-table
+        v-if="previewData
+          && (previewData.rowCount > 0 || Object.keys(previewData).length > 0)
+        "
+        :data-set="previewData"
+        class="preview-table"
+        :preview="true"
+      />
+      <div v-else class="no-data">No data</div>
+      <logs
+        class="import-csv-errors"
+        :messages="importCsvMessages"
+      />
+    </div>
+    <div class="dialog-buttons-container">
+      <button
+        class="secondary"
+        :disabled="disableDialog"
+        @click="cancelCsvImport"
+        id="csv-cancel"
+      >
+        Cancel
+      </button>
+      <button
+        v-show="!importCsvCompleted"
+        class="primary"
+        :disabled="disableDialog"
+        @click="loadFromCsv(file)"
+        id="csv-import"
+      >
+        Import
+      </button>
+      <button
+        v-show="importCsvCompleted"
+        class="primary"
+        :disabled="disableDialog"
+        @click="finish"
+        id="csv-finish"
+      >
+        Finish
+      </button>
+    </div>
+  </modal>
+</template>
+
+<script>
+import csv from './csv'
+import CloseIcon from '@/components/svg/close'
+import TextField from '@/components/TextField'
+import DelimiterSelector from './DelimiterSelector'
+import CheckBox from '@/components/CheckBox'
+import SqlTable from '@/components/SqlTable'
+import Logs from '@/components/Logs'
+import time from '@/lib/utils/time'
+import fIo from '@/lib/utils/fileIo'
+
+export default {
+  name: 'CsvImport',
+  components: {
+    CloseIcon,
+    TextField,
+    DelimiterSelector,
+    CheckBox,
+    SqlTable,
+    Logs
+  },
+  props: ['file', 'db', 'dialogName'],
+  data () {
+    return {
+      disableDialog: false,
+      tableName: '',
+      delimiter: '',
+      quoteChar: '"',
+      escapeChar: '"',
+      header: true,
+      importCsvCompleted: false,
+      importCsvMessages: [],
+      previewData: null,
+      addedTable: null,
+      tableNameError: ''
+    }
+  },
+  watch: {
+    quoteChar () {
+      this.previewCsv()
+    },
+
+    escapeChar () {
+      this.previewCsv()
+    },
+
+    header () {
+      this.previewCsv()
+    },
+    tableName: time.debounce(function () {
+      this.tableNameError = ''
+      if (!this.tableName) {
+        return
+      }
+      this.db.validateTableName(this.tableName)
+        .catch(err => {
+          this.tableNameError = err.message + '. Try another table name.'
+        })
+    }, 400)
+  },
+  methods: {
+    cancelCsvImport () {
+      if (!this.disableDialog) {
+        if (this.addedTable) {
+          this.db.execute(`DROP TABLE "${this.addedTable}"`)
+          this.db.refreshSchema()
+        }
+        this.$modal.hide(this.dialogName)
+        this.$emit('cancel')
+      }
+    },
+    reset () {
+      this.header = true
+      this.quoteChar = '"'
+      this.escapeChar = '"'
+      this.delimiter = ''
+      this.tableName = ''
+      this.disableDialog = false
+      this.importCsvCompleted = false
+      this.importCsvMessages = []
+      this.previewData = null
+      this.addedTable = null
+      this.tableNameError = ''
+    },
+    open () {
+      this.tableName = this.db.sanitizeTableName(fIo.getFileName(this.file))
+      this.$modal.show(this.dialogName)
+    },
+    async previewCsv () {
+      this.importCsvCompleted = false
+      const config = {
+        preview: 3,
+        quoteChar: this.quoteChar || '"',
+        escapeChar: this.escapeChar,
+        header: this.header,
+        delimiter: this.delimiter
+      }
+      try {
+        const start = new Date()
+        const parseResult = await csv.parse(this.file, config)
+        const end = new Date()
+        this.previewData = parseResult.data
+        this.delimiter = parseResult.delimiter
+
+        // In parseResult.messages we can get parse errors
+        this.importCsvMessages = parseResult.messages || []
+
+        if (!parseResult.hasErrors) {
+          this.importCsvMessages.push({
+            message: `Preview parsing is completed in ${time.getPeriod(start, end)}.`,
+            type: 'success'
+          })
+        }
+      } catch (err) {
+        this.importCsvMessages = [{
+          message: err,
+          type: 'error'
+        }]
+      }
+    },
+    async loadFromCsv (file) {
+      if (!this.tableName) {
+        this.tableNameError = "Table name can't be empty"
+        return
+      }
+
+      this.disableDialog = true
+      const config = {
+        quoteChar: this.quoteChar || '"',
+        escapeChar: this.escapeChar,
+        header: this.header,
+        delimiter: this.delimiter
+      }
+      const parseCsvMsg = {
+        message: 'Parsing CSV...',
+        type: 'info'
+      }
+      this.importCsvMessages.push(parseCsvMsg)
+      const parseCsvLoadingIndicator = setTimeout(() => { parseCsvMsg.type = 'loading' }, 1000)
+
+      const importMsg = {
+        message: 'Importing CSV into a SQLite database...',
+        type: 'info'
+      }
+      let importLoadingIndicator = null
+
+      const updateProgress = progress => {
+        this.$set(importMsg, 'progress', progress)
+      }
+      const progressCounterId = this.db.createProgressCounter(updateProgress)
+
+      try {
+        let start = new Date()
+        const parseResult = await csv.parse(this.file, config)
+        let end = new Date()
+
+        if (!parseResult.hasErrors) {
+          const rowCount = parseResult.rowCount
+          let period = time.getPeriod(start, end)
+          parseCsvMsg.type = 'success'
+
+          if (parseResult.messages.length > 0) {
+            this.importCsvMessages = this.importCsvMessages.concat(parseResult.messages)
+            parseCsvMsg.message = `${rowCount} rows are parsed in ${period}.`
+          } else {
+            // Inform about csv parsing success
+            parseCsvMsg.message = `${rowCount} rows are parsed successfully in ${period}.`
+          }
+
+          // Loading indicator for csv parsing is not needed anymore
+          clearTimeout(parseCsvLoadingIndicator)
+
+          // Add info about import start
+          this.importCsvMessages.push(importMsg)
+
+          // Show import progress after 1 second
+          importLoadingIndicator = setTimeout(() => {
+            importMsg.type = 'loading'
+          }, 1000)
+
+          // Add table
+          start = new Date()
+          await this.db.addTableFromCsv(this.tableName, parseResult.data, progressCounterId)
+          end = new Date()
+
+          this.addedTable = this.tableName
+          // Inform about import success
+          period = time.getPeriod(start, end)
+          importMsg.message = `Importing CSV into a SQLite database is completed in ${period}.`
+          importMsg.type = 'success'
+
+          // Loading indicator for import is not needed anymore
+          clearTimeout(importLoadingIndicator)
+
+          this.importCsvCompleted = true
+        } else {
+          parseCsvMsg.message = 'Parsing ended with errors.'
+          parseCsvMsg.type = 'info'
+          this.importCsvMessages = this.importCsvMessages.concat(parseResult.messages)
+        }
+      } catch (err) {
+        if (parseCsvMsg.type === 'loading') {
+          parseCsvMsg.type = 'info'
+        }
+
+        if (importMsg.type === 'loading') {
+          importMsg.type = 'info'
+        }
+
+        this.importCsvMessages.push({
+          message: err,
+          type: 'error'
+        })
+      }
+
+      clearTimeout(parseCsvLoadingIndicator)
+      clearTimeout(importLoadingIndicator)
+      this.db.deleteProgressCounter(progressCounterId)
+      this.disableDialog = false
+    },
+    async finish () {
+      this.$modal.hide(this.dialogName)
+      const stmt = [
+        '/*',
+        ` * Your CSV file has been imported into ${this.addedTable} table.`,
+        ' * You can run this SQL query to make all CSV records available for charting.',
+        ' */',
+        `SELECT * FROM "${this.addedTable}"`
+      ].join('\n')
+      const tabId = await this.$store.dispatch('addTab', { query: stmt })
+      this.$store.commit('setCurrentTabId', tabId)
+      this.importCsvCompleted = false
+      this.$emit('finish')
+    }
+  }
+}
+</script>
+
+<style scoped>
+.dialog-body {
+  padding-bottom: 0;
+}
+
+.chars {
+  display: flex;
+  align-items: flex-end;
+  margin: 24px 0 20px;
+}
+.char-input {
+  margin-right: 44px;
+}
+.preview-table {
+  margin-top: 18px;
+}
+
+.import-csv-errors {
+  height: 136px;
+  margin-top: 8px;
+}
+.no-data {
+  margin-top: 32px;
+  background-color: white;
+  border-radius: 5px;
+  position: relative;
+  border: 1px solid var(--color-border-light);
+  box-sizing: border-box;
+  height: 147px;
+  font-size: 13px;
+  color: var(--color-text-base);
+  display: flex;
+  justify-content: center;
+  align-items: center;
+}
+
+/* https://github.com/euvl/vue-js-modal/issues/623 */
+>>> .vm--modal {
+  max-width: 1152px;
+  margin: auto;
+  left: 0 !important;
+}
+</style>

src/components/DbUploader.vue

@@ -1,7 +1,7 @@
 <template>
   <div class="db-uploader-container" :style="{ width }">
-    <change-db-icon v-if="type === 'small'" @click.native="browse"/>
-    <div v-if="['regular', 'illustrated'].includes(type)" class="drop-area-container">
+    <change-db-icon v-if="type === 'small'" @click="browse"/>
+    <div v-if="type === 'illustrated'" class="drop-area-container">
       <div
         class="drop-area"
         @dragover.prevent="state = 'dragover'"
@@ -26,7 +26,8 @@
         ref="fileImg"
         :class="{
           'swing': state === 'dragover',
-          'fly': state === 'drop'
+          'fly': state === 'dropping',
+          'hidden': state === 'dropped'
         }"
         :src="require('@/assets/images/file.png')"
       />
@@ -41,112 +42,22 @@
     <div id="error" class="error"></div>
 
     <!--Parse csv dialog  -->
-    <modal name="parse" classes="dialog" height="auto" width="60%" :clickToClose="false">
-      <div class="dialog-header">
-        Import CSV
-        <close-icon @click="cancelCsvImport" :disabled="disableDialog"/>
-      </div>
-      <div class="dialog-body">
-        <div class="chars">
-          <delimiter-selector
-            v-model="delimiter"
-            width="210px"
-            class="char-input"
-            @input="previewCSV"
-            :disabled="disableDialog"
-          />
-          <text-field
-            label="Quote char"
-            hint="The character used to quote fields."
-            v-model="quoteChar"
-            width="93px"
-            :disabled="disableDialog"
-            class="char-input"
-            id="quote-char"
-          />
-          <text-field
-            label="Escape char"
-            hint='The character used to escape the quote character within a field (e.g. "column with ""quotes"" in text").'
-            max-hint-width="242px"
-            v-model="escapeChar"
-            width="93px"
-            :disabled="disableDialog"
-            class="char-input"
-            id="escape-char"
-          />
-        </div>
-        <check-box
-          @click="header = $event"
-          :init="true"
-          label="Use first row as column headers"
-          :disabled="disableDialog"
-        />
-        <sql-table
-          v-if="previewData"
-          :data-set="previewData"
-          height="160"
-          class="preview-table"
-          :preview="true"
-        />
-        <div v-if="!previewData" class="no-data">No data</div>
-        <logs
-          class="import-csv-errors"
-          :messages="importCsvMessages"
-        />
-      </div>
-      <div class="dialog-buttons-container">
-        <button
-          class="secondary"
-          :disabled="disableDialog"
-          @click="cancelCsvImport"
-          id="csv-cancel"
-        >
-          Cancel
-        </button>
-        <button
-          v-show="!importCsvCompleted"
-          class="primary"
-          :disabled="disableDialog"
-          @click="loadFromCsv(file)"
-          id="csv-import"
-        >
-          Import
-        </button>
-        <button
-          v-show="importCsvCompleted"
-          class="primary"
-          :disabled="disableDialog"
-          @click="finish"
-          id="csv-finish"
-        >
-          Finish
-        </button>
-      </div>
-    </modal>
+    <csv-import
+      ref="addCsv"
+      :file="file"
+      :db="newDb"
+      dialog-name="importFromCsv"
+      @cancel="cancelCsvImport"
+      @finish="finish"
+    />
   </div>
 </template>
 
 <script>
-import fu from '@/file.utils'
-import csv from '@/csv'
-import CloseIcon from '@/components/svg/close'
-import TextField from '@/components/TextField'
-import DelimiterSelector from '@/components/DelimiterSelector'
-import CheckBox from '@/components/CheckBox'
-import SqlTable from '@/components/SqlTable'
-import Logs from '@/components/Logs'
+import fIo from '@/lib/utils/fileIo'
 import ChangeDbIcon from '@/components/svg/changeDb'
-import time from '@/time'
-import database from '@/database'
-
-const csvMimeTypes = [
-  'text/csv',
-  'text/x-csv',
-  'application/x-csv',
-  'application/csv',
-  'text/x-comma-separated-values',
-  'text/comma-separated-values'
-]
+import database from '@/lib/database'
+import CsvImport from '@/components/CsvImport'
 
 export default {
   name: 'DbUploader',
@@ -154,9 +65,9 @@ export default {
     type: {
       type: String,
       required: false,
-      default: 'regular',
+      default: 'small',
       validator: (value) => {
-        return ['regular', 'illustrated', 'small'].includes(value)
+        return ['illustrated', 'small'].includes(value)
       }
     },
     width: {
@@ -167,27 +78,13 @@ export default {
   },
   components: {
     ChangeDbIcon,
-    TextField,
-    DelimiterSelector,
-    CloseIcon,
-    CheckBox,
-    SqlTable,
-    Logs
+    CsvImport
   },
   data () {
     return {
       state: '',
       animationPromise: Promise.resolve(),
       file: null,
-      schema: null,
-      delimiter: '',
-      quoteChar: '"',
-      escapeChar: '"',
-      header: true,
-      previewData: null,
-      importCsvMessages: [],
-      disableDialog: false,
-      importCsvCompleted: false,
       newDb: null
     }
   },
@@ -196,206 +93,50 @@ export default {
       this.animationPromise = new Promise((resolve) => {
         this.$refs.fileImg.addEventListener('animationend', event => {
           if (event.animationName.startsWith('fly')) {
+            this.state = 'dropped'
             resolve()
           }
         })
       })
     }
   },
-  watch: {
-    quoteChar () {
-      this.previewCSV()
-    },
-
-    escapeChar () {
-      this.previewCSV()
-    },
-
-    header () {
-      this.previewCSV()
-    }
-  },
   methods: {
     cancelCsvImport () {
-      if (!this.disableDialog) {
-        this.$modal.hide('parse')
-        if (this.newDb) {
-          this.newDb.shutDown()
-          this.newDb = null
-        }
+      if (this.newDb) {
+        this.newDb.shutDown()
+        this.newDb = null
       }
     },
 
     async finish () {
       this.$store.commit('setDb', this.newDb)
-      this.$store.commit('saveSchema', this.schema)
-      if (this.importCsvCompleted) {
-        this.$modal.hide('parse')
-        const tabId = await this.$store.dispatch('addTab', { query: 'select * from csv_import' })
-        this.$store.commit('setCurrentTabId', tabId)
-      }
-      if (this.$route.path !== '/editor') {
-        this.$router.push('/editor')
-      }
-    },
-
-    async previewCSV () {
-      this.importCsvCompleted = false
-      const config = {
-        preview: 3,
-        quoteChar: this.quoteChar || '"',
-        escapeChar: this.escapeChar,
-        header: this.header,
-        delimiter: this.delimiter
-      }
-      try {
-        const start = new Date()
-        const parseResult = await csv.parse(this.file, config)
-        const end = new Date()
-        this.previewData = parseResult.data
-        this.delimiter = parseResult.delimiter
-
-        // In parseResult.messages we can get parse errors
-        this.importCsvMessages = parseResult.messages || []
-
-        if (!parseResult.hasErrors) {
-          this.importCsvMessages.push({
-            message: `Preview parsing is completed in ${time.getPeriod(start, end)}.`,
-            type: 'success'
-          })
-        }
-      } catch (err) {
-        this.importCsvMessages = [{
-          message: err,
-          type: 'error'
-        }]
+      if (this.$route.path !== '/workspace') {
+        this.$router.push('/workspace')
       }
     },
 
     loadDb (file) {
-      this.newDb = database.getNewDatabase()
       return Promise.all([this.newDb.loadDb(file), this.animationPromise])
-        .then(([schema]) => {
-          this.schema = schema
-          this.finish()
-        })
-    },
-
-    async loadFromCsv (file) {
-      this.disableDialog = true
-      const config = {
-        quoteChar: this.quoteChar || '"',
-        escapeChar: this.escapeChar,
-        header: this.header,
-        delimiter: this.delimiter
-      }
-      const parseCsvMsg = {
-        message: 'Parsing CSV...',
-        type: 'info'
-      }
-      this.importCsvMessages.push(parseCsvMsg)
-      const parseCsvLoadingIndicator = setTimeout(() => { parseCsvMsg.type = 'loading' }, 1000)
-
-      const importMsg = {
-        message: 'Importing CSV into a SQLite database...',
-        type: 'info'
-      }
-      let importLoadingIndicator = null
-
-      const updateProgress = progress => {
-        this.$set(importMsg, 'progress', progress)
-      }
-      this.newDb = database.getNewDatabase()
-      const progressCounterId = this.newDb.createProgressCounter(updateProgress)
-
-      try {
-        let start = new Date()
-        const parseResult = await csv.parse(this.file, config)
-        let end = new Date()
-
-        if (!parseResult.hasErrors) {
-          const rowCount = parseResult.data.values.length
-          let period = time.getPeriod(start, end)
-          parseCsvMsg.type = 'success'
-
-          if (parseResult.messages.length > 0) {
-            this.importCsvMessages = this.importCsvMessages.concat(parseResult.messages)
-            parseCsvMsg.message = `${rowCount} rows are parsed in ${period}.`
-          } else {
-            // Inform about csv parsing success
-            parseCsvMsg.message = `${rowCount} rows are parsed successfully in ${period}.`
-          }
-
-          // Loading indicator for csv parsing is not needed anymore
-          clearTimeout(parseCsvLoadingIndicator)
-
-          // Add info about import start
-          this.importCsvMessages.push(importMsg)
-
-          // Show import progress after 1 second
-          importLoadingIndicator = setTimeout(() => {
-            importMsg.type = 'loading'
-          }, 1000)
-
-          // Create db with csv table and get schema
-          const name = file.name.replace(/\.[^.]+$/, '')
-          start = new Date()
-          this.schema = await this.newDb.createDb(name, parseResult.data, progressCounterId)
-          end = new Date()
-
-          // Inform about import success
-          period = time.getPeriod(start, end)
-          importMsg.message = `Importing CSV into a SQLite database is completed in ${period}.`
-          importMsg.type = 'success'
-
-          // Loading indicator for import is not needed anymore
-          clearTimeout(importLoadingIndicator)
-
-          this.importCsvCompleted = true
-        } else {
-          parseCsvMsg.message = 'Parsing ended with errors.'
-          parseCsvMsg.type = 'info'
-          this.importCsvMessages = this.importCsvMessages.concat(parseResult.messages)
-        }
-      } catch (err) {
-        if (parseCsvMsg.type === 'loading') {
-          parseCsvMsg.type = 'info'
-        }
-
-        if (importMsg.type === 'loading') {
-          importMsg.type = 'info'
-        }
-
-        this.importCsvMessages.push({
-          message: err,
-          type: 'error'
-        })
-      }
-
-      clearTimeout(parseCsvLoadingIndicator)
-      clearTimeout(importLoadingIndicator)
-      this.newDb.deleteProgressCounter(progressCounterId)
-      this.disableDialog = false
+        .then(this.finish)
     },
 
     async checkFile (file) {
-      this.state = 'drop'
-      if (csvMimeTypes.includes(file.type)) {
-        this.file = file
-        this.header = true
-        this.quoteChar = '"'
-        this.escapeChar = '"'
-        this.delimiter = ''
-        return Promise.all([this.previewCSV(), this.animationPromise])
-          .then(() => {
-            this.$modal.show('parse')
-          })
-      } else {
+      this.state = 'dropping'
+      this.newDb = database.getNewDatabase()
+
+      if (fIo.isDatabase(file)) {
         this.loadDb(file)
+      } else {
+        this.file = file
+        await this.$nextTick()
+        const csvImport = this.$refs.addCsv
+        csvImport.reset()
+        return Promise.all([csvImport.previewCsv(), this.animationPromise])
+          .then(csvImport.open)
       }
     },
     browse () {
-      fu.getFileFromUser('.db,.sqlite,.sqlite3,.csv')
+      fIo.getFileFromUser('.db,.sqlite,.sqlite3,.csv')
         .then(this.checkFile)
     },
 
@@ -431,6 +172,7 @@ export default {
   align-items: center;
   justify-content: center;
   height: 100%;
+  cursor: pointer;
 }
 
 #img-container {
@@ -502,42 +244,16 @@ export default {
 #file-img.fly {
   animation: fly ease-in-out 1s 1 normal;
   transform-origin: center center;
-  top: 183px;
-  left: 225px;
-  transition: top 1s ease-in-out, left 1s ease-in-out;
 }
 @keyframes fly {
-  100% { transform: rotate(360deg) scale(0.5); }
-}
-/* Parse CSV dialog */
-.chars {
-  display: flex;
-  align-items: flex-end;
-  margin-bottom: 20px;
-}
-.char-input {
-  margin-right: 44px;
-}
-.preview-table {
-  margin-top: 32px;
+  100% {
+    transform: rotate(360deg) scale(0.5);
+    top: 183px;
+    left: 225px;
+  }
 }
 
-.import-csv-errors {
-  height: 160px;
-  margin-top: 32px;
-}
-.no-data {
-  margin-top: 32px;
-  background-color: white;
-  border-radius: 5px;
-  position: relative;
-  border: 1px solid var(--color-border-light);
-  box-sizing: border-box;
-  height: 160px;
-  font-size: 13px;
-  color: var(--color-text-base);
-  display: flex;
-  justify-content: center;
-  align-items: center;
+#file-img.hidden {
+  display: none;
 }
 </style>

src/components/IconButton.vue

@@ -0,0 +1,110 @@
+<template>
+  <div
+    :class="['icon-btn', { active }, { disabled }]"
+    @click="onClick"
+    @mouseenter="showTooltip($event, tooltipPosition)"
+    @mouseleave="hideTooltip"
+  >
+    <div class="icon"><slot /></div>
+    <div v-show="loading" class="icon-in-progress">
+      <loading-indicator />
+    </div>
+    <span v-if="tooltip" class="icon-tooltip" :style="tooltipStyle" ref="tooltip">
+      {{ tooltip }}
+    </span>
+  </div>
+</template>
+
+<script>
+import tooltipMixin from '@/tooltipMixin'
+import LoadingIndicator from '@/components/LoadingIndicator'
+
+export default {
+  name: 'SideBarButton',
+  props: ['active', 'disabled', 'tooltip', 'tooltipPosition', 'loading'],
+  components: { LoadingIndicator },
+  mixins: [tooltipMixin],
+  methods: {
+    onClick () {
+      this.hideTooltip()
+      this.$emit('click')
+    }
+  }
+}
+</script>
+
+<style scoped>
+.icon-btn {
+  box-sizing: border-box;
+  width: 26px;
+  height: 26px;
+  cursor: pointer;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  position: relative;
+}
+.icon-btn:hover {
+  border: 1px solid var(--color-border);
+  border-radius: var(--border-radius-medium-2);
+}
+
+.icon-btn:hover .icon >>> path,
+.icon-btn.active .icon >>> path,
+.icon-btn:hover .icon >>> circle,
+.icon-btn.active .icon >>> circle {
+  fill: var(--color-accent);
+}
+
+.disabled.icon-btn  .icon >>> path,
+.disabled.icon-btn  .icon >>> circle {
+  fill: var(--color-border);
+}
+
+.disabled.icon-btn {
+  cursor: default;
+  pointer-events: none;
+}
+
+.disabled.icon-btn:hover .icon >>> path {
+  fill: var(--color-border);
+}
+
+.icon-in-progress {
+  position: absolute;
+  width: 26px;
+  height: 26px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  background-color: var(--color-bg-light);
+  will-change: opacity;
+  /*
+    We need to show loader in 1 sec after starting query execution. We can't do that with
+    setTimeout because the main thread can be busy by getting a result set from the web worker.
+    But we can use CSS animation for opacity. Opacity triggers changes only in the Composite Layer
+    stage in rendering waterfall. Hence it can be processed only with Compositor Thread while
+    the Main Thread processes a result set.
+    https://www.viget.com/articles/animation-performance-101-browser-under-the-hood/
+  */
+  animation: show-loader 1s linear 0s 1;
+}
+
+@keyframes show-loader {
+  0% {
+    opacity: 0;
+  }
+  99% {
+    opacity: 0;
+  }
+  100% {
+    opacity: 1;
+  }
+}
+
+.icon {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+</style>

src/components/LoadingIndicator.vue

@@ -1,17 +1,18 @@
 <template>
-  <svg :class="['svg-container', animationClass ]" height="20" width="20" viewBox="0 0 20 20">
+  <svg :class="animationClass" :height="size" :width="size" :viewBox="`0 0 ${size} ${size}`">
     <circle
       class="loader-svg bg"
-      cx="10"
-      cy="10"
-      r="8"
+      :style="{ strokeWidth }"
+      :cx="size / 2"
+      :cy="size / 2"
+      :r="radius"
     />
     <circle
       class="loader-svg front"
-      :style="{ strokeDasharray: circleProgress }"
-      cx="10"
-      cy="10"
-      r="8"
+      :style="{ strokeDasharray: circleProgress, strokeDashoffset: offset, strokeWidth }"
+      :cx="size / 2"
+      :cy="size / 2"
+      :r="radius"
     />
   </svg>
 </template>
@@ -19,15 +20,35 @@
 <script>
 export default {
   name: 'LoadingIndicator',
-  props: ['progress'],
+  props: {
+    progress: {
+      type: Number,
+      required: false
+    },
+    size: {
+      type: Number,
+      required: false,
+      default: 20
+    }
+  },
   computed: {
     circleProgress () {
-      const dash = (50.24 * this.progress) / 100
-      const space = 50.24 - dash
+      const circle = this.radius * 3.14 * 2
+      const dash = this.progress ? (circle * this.progress) / 100 : circle * 1 / 3
+      const space = circle - dash
       return `${dash}px, ${space}px`
     },
     animationClass () {
       return this.progress === undefined ? 'loading' : 'progress'
+    },
+    radius () {
+      return this.size / 2 - this.strokeWidth
+    },
+    offset () {
+      return this.radius * 3.14 / 2
+    },
+    strokeWidth () {
+      return this.size / 10
     }
   }
 }
@@ -38,7 +59,6 @@ export default {
   position: absolute;
   left: 0; right: 0; top: 0; bottom: 0;
   fill: none;
-  stroke-width: 2px;
   stroke-linecap: round;
   stroke: var(--color-accent);
 }
@@ -48,27 +68,30 @@ export default {
 }
 
 .loading .loader-svg.front {
-  stroke-dasharray: 40.24px;
+  will-change: transform;
   animation: fill-animation-loading 1s cubic-bezier(1,1,1,1) 0s infinite;
+  transform-origin: center;
 }
 
+/*
+  We can't change anything in loading animation except transform, opacity and filter. Because in
+  our case the Main Thread can be busy and animation will be frozen (e. g. getting a result set
+  from the web-worker after query execution).
+  But transform, opacity and filter trigger changes only in the Composite Layer stage in rendering
+  waterfall. Hence they can be processed only with Compositor Thread while the Main Thread
+  processes something else.
+  https://www.viget.com/articles/animation-performance-101-browser-under-the-hood/
+*/
 @keyframes fill-animation-loading {
   0% {
-    stroke-dasharray: 10px 40.24px;
-    stroke-dashoffset: 0;
-  }
-  50% {
-    stroke-dasharray: 25.12px;
-    stroke-dashoffset: 25.12px;
+    transform: rotate(0deg);
   }
   100% {
-    stroke-dasharray: 10px 40.24px;
-    stroke-dashoffset: 50.24px;
+    transform: rotate(360deg);
   }
 }
 
 .progress .loader-svg.front {
-  stroke-dashoffset: 12.56;
   transition: stroke-dasharray 0.2s;
 }
 

src/components/Logs.vue

@@ -63,14 +63,16 @@ export default {
   border-radius: 5px;
   border: 1px solid var(--color-border-light);
   box-sizing: border-box;
-  overflow-y: scroll;
+  overflow-y: auto;
+  color: var(--color-text-base);
 }
 .msg {
-  padding: 16px 7px;
+  padding: 12px 7px;
   border-bottom: 1px solid var(--color-border-light);
   display: flex;
   align-items: flex-start;
   font-family: monospace;
+  font-size: 13px;
 }
 
 .msg:last-child {

src/components/Splitpanes/index.vue

@@ -65,7 +65,7 @@
 </template>
 
 <script>
-import splitter from '@/splitter'
+import splitter from './splitter'
 
 export default {
   name: 'Splitpanes',

src/components/SqlEditor.vue

@@ -1,64 +0,0 @@
-<template>
-  <div class="codemirror-container">
-    <codemirror v-model="query" :options="cmOptions" @changes="onChange" />
-  </div>
-</template>
-
-<script>
-import hint from '@/hint'
-import { codemirror } from 'vue-codemirror'
-import 'codemirror/lib/codemirror.css'
-import 'codemirror/mode/sql/sql.js'
-import 'codemirror/theme/neo.css'
-import 'codemirror/addon/hint/show-hint.css'
-import 'codemirror/addon/display/autorefresh.js'
-
-export default {
-  name: 'SqlEditor',
-  props: ['value'],
-  components: { codemirror },
-  data () {
-    return {
-      query: this.value,
-      cmOptions: {
-        // codemirror options
-        tabSize: 4,
-        mode: 'text/x-mysql',
-        theme: 'neo',
-        lineNumbers: true,
-        line: true,
-        autofocus: true,
-        autoRefresh: true
-      }
-    }
-  },
-  watch: {
-    query () {
-      this.$emit('input', this.query)
-    }
-  },
-  methods: {
-    onChange: hint.show
-  }
-}
-</script>
-
-<style scoped>
-.codemirror-container {
-  flex-grow: 1;
-  min-height: 0;
-}
-
->>> .vue-codemirror {
-  height: 100%;
-  max-height: 100%;
-}
->>> .CodeMirror {
-  height: 100%;
-  max-height: 100%;
-}
->>> .CodeMirror-cursor {
-  width: 1px;
-  background: var(--color-text-base);
-}
-</style>

src/components/SqlTable/Pager.vue

@@ -49,6 +49,7 @@ export default {
 .paginator-continer {
   display: flex;
   align-items: center;
+  line-height: 10px;
 }
 >>> .paginator-page-link {
   padding: 2px 3px;

src/components/SqlTable/index.vue

@@ -17,20 +17,21 @@
         class="table-container"
         ref="table-container"
         @scroll="onScrollTable"
-        :style="{maxHeight: `${height}px`}"
       >
-      <table ref="table">
+      <table ref="table" class="sqliteviz-table">
         <thead>
           <tr>
-            <th v-for="(th,index) in dataSet.columns" :key="index" ref="th">
+            <th v-for="(th, index) in columns" :key="index" ref="th">
               <div class="cell-data" :style="cellStyle">{{ th }}</div>
             </th>
           </tr>
         </thead>
         <tbody>
-          <tr v-for="(row,index) in currentPageData" :key="index">
-            <td v-for="(value, valIndex) in row" :key="valIndex">
-              <div class="cell-data" :style="cellStyle">{{ value }}</div>
+          <tr v-for="rowIndex in currentPageData.count" :key="rowIndex">
+            <td v-for="(col, colIndex) in columns" :key="colIndex">
+              <div class="cell-data" :style="cellStyle">
+                {{ dataSet.values[col][rowIndex - 1 + currentPageData.start] }}
+              </div>
             </td>
           </tr>
         </tbody>
@@ -39,8 +40,9 @@
     </div>
     <div class="table-footer">
       <div class="table-footer-count">
-        {{ dataSet.values.length}} {{dataSet.values.length === 1 ? 'row' : 'rows'}} retrieved
+        {{ rowCount }} {{rowCount === 1 ? 'row' : 'rows'}} retrieved
         <span v-if="preview">for preview</span>
+        <span v-if="time">in {{ time }}</span>
       </div>
       <pager v-show="pageCount > 1" :page-count="pageCount" v-model="currentPage" />
     </div>
@@ -48,12 +50,20 @@
 </template>
 
 <script>
-import Pager from '@/components/Pager'
+import Pager from './Pager'
 
 export default {
   name: 'SqlTable',
   components: { Pager },
-  props: ['dataSet', 'height', 'preview'],
+  props: {
+    dataSet: Object,
+    time: String,
+    pageSize: {
+      type: Number,
+      default: 20
+    },
+    preview: Boolean
+  },
   data () {
     return {
       header: null,
@@ -63,20 +73,30 @@ export default {
     }
   },
   computed: {
+    columns () {
+      return this.dataSet.columns
+    },
+    rowCount () {
+      return this.dataSet.values[this.columns[0]].length
+    },
     cellStyle () {
-      const eq = this.tableWidth / this.dataSet.columns.length
-
+      const eq = this.tableWidth / this.columns.length
       return { maxWidth: `${Math.max(eq, 100)}px` }
     },
-    pageSize () {
-      return Math.max(Math.floor(this.height / 40), 20)
-    },
     pageCount () {
-      return Math.ceil(this.dataSet.values.length / this.pageSize)
+      return Math.ceil(this.rowCount / this.pageSize)
     },
     currentPageData () {
       const start = (this.currentPage - 1) * this.pageSize
-      return this.dataSet.values.slice(start, start + this.pageSize)
+      let end = start + this.pageSize
+      if (end > this.rowCount - 1) {
+        end = this.rowCount - 1
+      }
+      return {
+        start,
+        end,
+        count: end - start + 1
+      }
     }
   },
   methods: {

src/components/Tab.vue

@@ -1,193 +0,0 @@
-<template>
-  <div class="tab-content-container" v-show="isActive">
-    <splitpanes
-      class="query-results-splitter"
-      horizontal
-      :before="{ size: 50, max: 100 }"
-      :after="{ size: 50, max: 100 }"
-    >
-      <template #left-pane>
-        <div class="query-editor">
-          <sql-editor v-model="query" />
-        </div>
-      </template>
-      <template #right-pane>
-        <div id="bottomPane" ref="bottomPane">
-          <view-switcher :view.sync="view" />
-          <div v-show="view === 'table'" class="table-view">
-            <div
-              v-show="result === null && !isGettingResults && !error"
-              class="table-preview result-before"
-            >
-              Run your query and get results here
-            </div>
-            <div v-show="isGettingResults" class="table-preview result-in-progress">
-              Fetching results...
-            </div>
-            <div
-              v-show="result === undefined && !isGettingResults && !error"
-              class="table-preview result-empty"
-            >
-              No rows retrieved according to your query
-            </div>
-            <div v-show="error" class="table-preview error">
-              {{ error }}
-            </div>
-            <sql-table v-if="result" :data-set="result" :height="tableViewHeight" />
-          </div>
-          <chart
-            :visible="view === 'chart'"
-            :sql-result="result"
-            :init-chart="initChart"
-            ref="chart"
-            @update="$store.commit('updateTab', { index: tabIndex, isUnsaved: true })"
-          />
-        </div>
-      </template>
-    </splitpanes>
-  </div>
-</template>
-
-<script>
-import SqlTable from '@/components/SqlTable'
-import SqlEditor from '@/components/SqlEditor'
-import Splitpanes from '@/components/Splitpanes'
-import ViewSwitcher from '@/components/ViewSwitcher'
-import Chart from '@/components/Chart'
-
-export default {
-  name: 'Tab',
-  props: ['id', 'initName', 'initQuery', 'initChart', 'tabIndex', 'isPredefined'],
-  components: {
-    SqlEditor,
-    SqlTable,
-    Splitpanes,
-    ViewSwitcher,
-    Chart
-  },
-  data () {
-    return {
-      query: this.initQuery,
-      result: null,
-      view: 'table',
-      tableViewHeight: 0,
-      isGettingResults: false,
-      error: null,
-      resizeObserver: null
-    }
-  },
-  computed: {
-    isActive () {
-      return this.id === this.$store.state.currentTabId
-    }
-  },
-  created () {
-    this.$store.commit('setCurrentTab', this)
-  },
-  mounted () {
-    this.resizeObserver = new ResizeObserver(this.handleResize)
-    this.resizeObserver.observe(this.$refs.bottomPane)
-    this.calculateTableHeight()
-  },
-  beforeDestroy () {
-    this.resizeObserver.unobserve(this.$refs.bottomPane)
-  },
-  watch: {
-    isActive () {
-      if (this.isActive) {
-        this.$store.commit('setCurrentTab', this)
-      }
-    },
-    query () {
-      this.$store.commit('updateTab', { index: this.tabIndex, isUnsaved: true })
-    }
-  },
-  methods: {
-    // Run a command in the database
-    async execute () {
-      this.isGettingResults = true
-      this.result = null
-      this.error = null
-      const state = this.$store.state
-      try {
-        this.result = await state.db.execute(this.query + ';')
-        const schema = await state.db.getSchema(state.dbName)
-        this.$store.commit('saveSchema', schema)
-      } catch (err) {
-        this.error = err
-      }
-      this.isGettingResults = false
-    },
-    handleResize () {
-      if (this.view === 'chart') {
-        // hack react-chart editor: hidden and show in order to make the graph resize
-        this.view = 'not chart'
-        this.$nextTick(() => {
-          this.view = 'chart'
-        })
-      }
-      this.calculateTableHeight()
-    },
-    calculateTableHeight () {
-      const bottomPane = this.$refs.bottomPane
-      // 88 - view swittcher height
-      // 42 - table footer width
-      // 30 - desirable space after the table
-      // 5 - padding-bottom of rounded table container
-      // 40 - height of table header
-      const freeSpace = bottomPane.offsetHeight - 88 - 42 - 30 - 5 - 40
-      this.tableViewHeight = freeSpace - (freeSpace % 40)
-    }
-  }
-}
-</script>
-
-<style scoped>
-.tab-content-container {
-  background-color: var(--color-white);
-  border-top: 1px solid var(--color-border-light);
-  margin-top: -1px;
-}
-
-#bottomPane {
-  height: 100%;
-  background-color: var(--color-bg-light);
-}
-
-.query-results-splitter {
-  height: calc(100vh - 104px);
-  background-color: var(--color-bg-light);
-}
-
-.query-editor {
-  display: flex;
-  flex-direction: column;
-  height: 100%;
-  max-height: 100%;
-  box-sizing: border-box;
-  min-height: 190px;
-}
-
-.table-view {
-  margin: 0 52px;
-  height: calc(100% - 88px);
-  position: relative;
-}
-
-.table-preview {
-  position: absolute;
-  top: 40%;
-  left: 50%;
-  transform: translate(-50%, -50%);
-  color: var(--color-text-base);
-  font-size: 13px;
-}
-
-.table-preview.error {
-  color: var(--color-text-error);
-}
-
-.table-preview.error::first-letter {
-  text-transform: capitalize;
-}
-</style>

src/components/TextField.vue

@@ -87,4 +87,7 @@ input.error {
   margin-top: 2px;
   position: absolute;
 }
+.text-field-error:first-letter {
+  text-transform: uppercase;
+}
 </style>

src/components/ViewSwitcher.vue

@@ -1,67 +0,0 @@
-<template>
-  <div class="view-switcher">
-    <div
-      :class="['table-mode', {'active-mode': view === 'table'}]"
-      @click="$emit('update:view','table')"
-    >
-      Table
-    </div>
-    <div
-      :class="['chart-mode', {'active-mode': view === 'chart'}]"
-      @click="$emit('update:view','chart')"
-    >
-      Chart
-    </div>
-  </div>
-</template>
-
-<script>
-export default {
-  name: 'ViewSwitcher',
-  props: ['view']
-}
-</script>
-
-<style scoped>
-.view-switcher {
-  height: 28px;
-  display: flex;
-  padding: 30px;
-  justify-content: center;
-}
-.view-switcher div {
-  height: 100%;
-  width: 136px;
-  box-sizing: border-box;
-  line-height: 28px;
-  font-size: 12px;
-  cursor: pointer;
-  background: var(--color-white);
-  border: 1px solid var(--color-border);
-  color: var(--color-text-base);
-  text-align: center;
-  font-weight: 400;
-}
-.view-switcher div:hover {
-  background-color: var(--color-bg-light);
-  color: var(--color-text-active);
-}
-.view-switcher div.active-mode {
-  background: var(--color-accent);
-  border: 1px solid var(--color-accent-shade);
-  color: var(--color-text-light);
-  text-shadow: var(--shadow);
-  z-index: 1;
-  font-weight: 600;
-}
-.view-switcher div.active-mode:hover {
-  background: var(--color-accent-shade);
-}
-.table-mode {
-  border-radius: var(--border-radius-medium) 0 0 var(--border-radius-medium);
-}
-.chart-mode {
-  margin-left: -1px;
-  border-radius: 0 var(--border-radius-medium) var(--border-radius-medium) 0;
-}
-</style>

src/components/svg/addTable.vue

@@ -0,0 +1,67 @@
+<template>
+  <span>
+    <svg
+      class="icon"
+      width="18"
+      height="18"
+      viewBox="0 0 18 18"
+      fill="none"
+      @click.stop="onClick"
+      @mouseenter="showTooltip"
+      @mouseleave="hideTooltip"
+    >
+      <g clip-path="url(#clip0)">
+        <path
+          fill-rule="evenodd"
+          clip-rule="evenodd"
+          d="
+            M13.6573 1.5H2.59985C1.77485 1.5 1.09985 2.175 1.09985 3V13.6649C1.09985 14.4899
+            1.77485 15.1649 2.59985
+            15.1649H9.84V13.6649H8.87866V9.08244H13.6573V9.83777H15.1573V3C15.1573
+            2.17 14.4873 1.5 13.6573 1.5ZM13.6573
+            7.58244V3H8.87866V7.58244H13.6573ZM7.37866 3H2.59985V7.58244H7.37866V3ZM2.59985
+            9.08244V13.6649H7.37866V9.08244H2.59985ZM13.1702
+            10.8434H15.6702V13.1717H18.0001V15.6717H15.6702V18H13.1702V15.6717H10.8401V13.1717H13.1702V10.8434Z
+          "
+          fill="#A2B1C6"
+        />
+      </g>
+      <defs>
+        <clipPath id="clip0">
+          <rect width="18" height="18" fill="white"/>
+        </clipPath>
+      </defs>
+    </svg>
+    <span class="icon-tooltip" :style="tooltipStyle" ref="tooltip">
+      Add new table from CSV
+    </span>
+  </span>
+</template>
+
+<script>
+import tooltipMixin from '@/tooltipMixin'
+
+export default {
+  name: 'AddTableIcon',
+  mixins: [tooltipMixin],
+  props: ['tooltip'],
+  methods: {
+    onClick () {
+      this.hideTooltip()
+      this.$emit('click')
+    }
+  }
+}
+</script>
+
+<style scoped>
+.icon {
+  display: block;
+  margin: 0;
+  cursor: pointer;
+}
+
+.icon:hover path {
+  fill: var(--color-accent);
+}
+</style>

src/components/svg/changeDb.vue

@@ -6,27 +6,33 @@
     height="18"
     viewBox="0 0 18 18"
     fill="none"
-    xmlns="http://www.w3.org/2000/svg"
-    @mouseover="showTooltip"
-    @mouseout="hideTooltip"
+    @click.stop="onClick"
+    @mouseenter="showTooltip"
+    @mouseleave="hideTooltip"
   >
     <path
       d="M3 10.5V12.75C3 14.25 5.2875 15.54 8.25 15.75V13.5825L8.3475 13.5C5.34 13.32 3 12.045 3 10.5ZM9 9.75C5.685 9.75 3 8.4075 3 6.75V9C3 10.6575 5.685 12 9 12C9.2925 12 9.5775 12 9.87 12L12.75 9.09C11.55 9.54 10.2825 9.75 9 9.75ZM9 2.25C5.685 2.25 3 3.5925 3 5.25C3 6.9075 5.685 8.25 9 8.25C12.315 8.25 15 6.9075 15 5.25C15 3.5925 12.315 2.25 9 2.25ZM15.75 8.3475C15.6375 8.3475 15.5325 8.3925 15.4575 8.475L14.7075 9.225L16.245 10.725L16.995 9.975C17.1525 9.825 17.16 9.57 16.995 9.3975L16.065 8.475C15.99 8.3925 15.885 8.3475 15.78 8.3475H15.75ZM14.28 9.66L9.75 14.205V15.75H11.295L15.84 11.1975L14.28 9.66Z"
       fill="#A2B1C6"
     />
   </svg>
-  <span class="icon-tooltip" :style="tooltipStyle">
-    Change database
+  <span class="icon-tooltip" :style="tooltipStyle" ref="tooltip">
+    Load another database or CSV
   </span>
 </div>
 </template>
 
 <script>
-import tooltipMixin from '@/mixins/tooltips'
+import tooltipMixin from '@/tooltipMixin'
 
 export default {
   name: 'changeDbIcon',
-  mixins: [tooltipMixin]
+  mixins: [tooltipMixin],
+  methods: {
+    onClick () {
+      this.hideTooltip()
+      this.$emit('click')
+    }
+  }
 }
 </script>
 

src/components/svg/chart.vue

@@ -0,0 +1,22 @@
+<template>
+  <svg
+    width="18"
+    height="18"
+    viewBox="0 0 18 18"
+    fill="none"
+  >
+    <path fill-rule="evenodd" clip-rule="evenodd" d="M8.41943 16V10H10.4194V16H8.41943Z" fill="#A2B1C6"/>
+    <path fill-rule="evenodd" clip-rule="evenodd" d="M2.41943 16L2.41943 10H4.41943V16H2.41943Z" fill="#A2B1C6"/>
+    <path fill-rule="evenodd" clip-rule="evenodd" d="M11.4194 16V7H13.4194V16H11.4194Z" fill="#A2B1C6"/>
+    <path fill-rule="evenodd" clip-rule="evenodd" d="M14.4194 16V8H16.4194V16H14.4194Z" fill="#A2B1C6"/>
+    <path fill-rule="evenodd" clip-rule="evenodd" d="M7.41943 12V16H5.41943V12H7.41943Z" fill="#A2B1C6"/>
+    <path fill-rule="evenodd" clip-rule="evenodd" d="M12.4332 1.80676L16.6265 6.00001L15.9194 6.70712L12.4055 3.19326L5.93169 9.1691L1.71436 5.55424L2.36515 4.79499L5.90707 7.83092L12.4332 1.80676Z" fill="#A2B1C6"/>
+  </svg>
+</template>
+
+<script>
+
+export default {
+  name: 'ChartIcon'
+}
+</script>

src/components/svg/dataView.vue

@@ -0,0 +1,19 @@
+<template>
+  <svg
+    width="18"
+    height="18"
+    viewBox="0 0 18 18"
+    fill="none"
+  >
+    <path fill-rule="evenodd" clip-rule="evenodd" d="M13.5552 6.91522C13.7584 6.91357 13.9535 6.99442 14.096 7.13926L17.2582 10.3541C17.5486 10.6494 17.5447 11.1242 17.2494 11.4147C16.9541 11.7051 16.4793 11.7012 16.1888 11.4059L13.57 8.74357L9.29577 13.2318C9.01977 13.5216 8.56484 13.5436 8.2621 13.2819L5.35435 10.7677L2.03285 13.7321C1.72382 14.0079 1.24971 13.981 0.973901 13.6719C0.69809 13.3629 0.725022 12.8888 1.03406 12.613L4.8471 9.20986C5.12827 8.95892 5.55198 8.95559 5.83705 9.20208L8.70249 11.6797L13.0182 7.14796C13.1583 7.00084 13.3521 6.91686 13.5552 6.91522Z" fill="#A2B1C6"/>
+    <circle cx="5.50049" cy="6.00339" r="1.5" fill="#A2B1C6"/>
+    <path fill-rule="evenodd" clip-rule="evenodd" d="M16.036 1.21788L1.96546 1.213C1.14046 1.213 0.465462 1.888 0.465462 2.713L0.464111 15.2821C0.464111 16.1071 1.13911 16.7821 1.96411 16.7821L16.0347 16.787C16.8674 16.787 17.5347 16.1121 17.5347 15.287L17.536 2.71788C17.536 1.88787 16.866 1.21788 16.036 1.21788ZM16.0374 2.71788L1.96424 2.713L1.96289 15.2773L16.036 15.2821L16.0374 2.71788Z" fill="#A2B1C6"/>
+</svg>
+</template>
+
+<script>
+
+export default {
+  name: 'DataViewIcon'
+}
+</script>

src/components/svg/export.vue

@@ -6,29 +6,34 @@
       height="18"
       viewBox="0 0 18 18"
       fill="none"
-      xmlns="http://www.w3.org/2000/svg"
-      @click.stop="$emit('click')"
-      @mouseover="showTooltip"
-      @mouseout="hideTooltip"
+      @click.stop="onClick"
+      @mouseenter="showTooltip($event, tooltipPosition)"
+      @mouseleave="hideTooltip"
     >
       <path
         d="M10.5 1.5H4.5C3.675 1.5 3 2.175 3 3V15C3 15.825 3.675 16.5 4.5 16.5H13.5C14.325 16.5 15 15.825 15 15V6L10.5 1.5ZM13.5 15H4.5V3H9.75V6.75H13.5V15ZM12 8.25V13.575L10.425 12L8.325 14.1L6.225 12L8.325 9.9L6.675 8.25H12Z"
         fill="#A2B1C6"
       />
     </svg>
-    <span class="icon-tooltip" :style="tooltipStyle">
+    <span class="icon-tooltip" :style="tooltipStyle" ref="tooltip">
       {{ tooltip }}
     </span>
   </span>
 </template>
 
 <script>
-import tooltipMixin from '@/mixins/tooltips'
+import tooltipMixin from '@/tooltipMixin'
 
 export default {
   name: 'ExportIcon',
   mixins: [tooltipMixin],
-  props: ['tooltip']
+  props: ['tooltip', 'tooltipPosition'],
+  methods: {
+    onClick () {
+      this.hideTooltip()
+      this.$emit('click')
+    }
+  }
 }
 </script>
 

src/components/svg/hint.vue

@@ -6,26 +6,32 @@
       height="20"
       viewBox="0 0 20 20"
       fill="none"
-      xmlns="http://www.w3.org/2000/svg"
-      @mouseover="showTooltip"
-      @mouseout="hideTooltip"
+      @click.stop="onClick"
+      @mouseenter="showTooltip"
+      @mouseleave="hideTooltip"
     >
       <path d="M8.75 14.1666H10.4167V12.5H8.75V14.1666ZM9.58333 16.25C5.90833 16.25 2.91667 13.2583 2.91667 9.58333C2.91667 5.90833 5.90833 2.91667 9.58333 2.91667C13.2583 2.91667 16.25 5.90833 16.25 9.58333C16.25 13.2583 13.2583 16.25 9.58333 16.25ZM9.58333 1.25C8.48898 1.25 7.40535 1.46555 6.3943 1.88434C5.38326 2.30313 4.4646 2.91696 3.69078 3.69078C2.12797 5.25358 1.25 7.3732 1.25 9.58333C1.25 11.7935 2.12797 13.9131 3.69078 15.4759C4.4646 16.2497 5.38326 16.8635 6.3943 17.2823C7.40535 17.7011 8.48898 17.9167 9.58333 17.9167C11.7935 17.9167 13.9131 17.0387 15.4759 15.4759C17.0387 13.9131 17.9167 11.7935 17.9167 9.58333C17.9167 8.48898 17.7011 7.40535 17.2823 6.3943C16.8635 5.38326 16.2497 4.4646 15.4759 3.69078C14.7021 2.91696 13.7834 2.30313 12.7724 1.88434C11.7613 1.46555 10.6777 1.25 9.58333 1.25Z" fill="#A2B1C6"/>
       <path d="M9.91601 4.51787C8.98167 4.42606 8.05144 4.69097 7.36309 5.24472C6.68735 5.78828 6.2998 6.56661 6.2998 7.38012H7.92488C7.92488 6.97463 8.11059 6.60187 8.44779 6.33061C8.79784 6.049 9.25647 5.92005 9.73896 5.96755C10.4832 6.04076 11.0828 6.57277 11.1647 7.23265C11.2306 7.764 10.9661 8.28194 10.4744 8.58426C9.38676 9.25303 8.73742 10.343 8.73742 11.5H10.3625C10.3625 10.8243 10.7477 10.184 11.3929 9.78733C12.3808 9.17985 12.9122 8.13913 12.7798 7.07124C12.6144 5.73863 11.41 4.66476 9.91601 4.51787Z" fill="#A2B1C6"/>
     </svg>
-    <span class="icon-tooltip" :style="{...tooltipStyle, maxWidth: maxWidth }">
+    <span class="icon-tooltip" :style="{...tooltipStyle, maxWidth: maxWidth }" ref="tooltip">
       {{ hint }}
     </span>
   </div>
 </template>
 
 <script>
-import tooltipMixin from '@/mixins/tooltips'
+import tooltipMixin from '@/tooltipMixin'
 
 export default {
   name: 'HintIcon',
   props: ['hint', 'maxWidth'],
-  mixins: [tooltipMixin]
+  mixins: [tooltipMixin],
+  methods: {
+    onClick () {
+      this.hideTooltip()
+      this.$emit('click')
+    }
+  }
 }
 </script>
 

src/components/svg/pivot.vue

@@ -0,0 +1,20 @@
+<template>
+  <svg
+    width="18"
+    height="18"
+    viewBox="0 0 18 18"
+    fill="none"
+  >
+    <path fill-rule="evenodd" clip-rule="evenodd" d="M15.7661 5.13901L18.3407 9.43008H16.5161V12.8467C16.5161 13.7957 16.2783 14.6451 15.6714 15.2521C15.0645 15.859 14.215 16.0967 13.2661 16.0967H9.84942V17.9214L5.55835 15.3467L9.84942 12.7721V14.5967H13.2661C13.9838 14.5967 14.3844 14.4178 14.6108 14.1914C14.8372 13.965 15.0161 13.5645 15.0161 12.8467V9.43008H13.1914L15.7661 5.13901Z" fill="#A2B1C6"/>
+    <path d="M6.41943 0H18.4194V4H6.41943V0Z" fill="#A2B1C6"/>
+    <path d="M0.419434 6H4.41943V18H0.419434V6Z" fill="#A2B1C6"/>
+    <path d="M0.419434 0H4.41943V4H0.419434V0Z" fill="#A2B1C6"/>
+  </svg>
+</template>
+
+<script>
+
+export default {
+  name: 'PivotIcon'
+}
+</script>

src/components/svg/png.svg

@@ -0,0 +1,5 @@
+<svg width="18" height="18" viewBox="0 0 18 18" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M9 5.51953C6.57686 5.51953 4.60547 7.49092 4.60547 9.91406C4.60547 12.3372 6.57686 14.3086 9 14.3086C11.4231 14.3086 13.3945 12.3372 13.3945 9.91406C13.3945 7.49092 11.4231 5.51953 9 5.51953ZM9 12.9023C7.35226 12.9023 6.01172 11.5618 6.01172 9.91406C6.01172 8.26632 7.35226 6.92578 9 6.92578C10.6477 6.92578 11.9883 8.26632 11.9883 9.91406C11.9883 11.5618 10.6477 12.9023 9 12.9023Z" fill="#A2B1C6"/>
+<path d="M15.8906 3.41016H13.304C13.2221 3.41016 13.1483 3.36547 13.1104 3.29319L12.3948 1.78945C12.3928 1.78534 12.3908 1.78126 12.3887 1.77718C12.1117 1.22312 11.5548 0.878906 10.9353 0.878906H7.11478C6.49529 0.878906 5.93835 1.22312 5.66135 1.77722C5.65928 1.7813 5.65731 1.78538 5.65534 1.78949L4.9397 3.2933C4.90173 3.36547 4.82797 3.41016 4.74609 3.41016H2.10938C0.946266 3.41016 0 4.35642 0 5.51953V15.0117C0 16.1748 0.946266 17.1211 2.10938 17.1211H15.8906C17.0537 17.1211 18 16.1748 18 15.0117V5.51953C18 4.35642 17.0537 3.41016 15.8906 3.41016ZM16.5938 15.0117C16.5938 15.3994 16.2783 15.7148 15.8906 15.7148H2.10938C1.72167 15.7148 1.40625 15.3994 1.40625 15.0117V5.51953C1.40625 5.13183 1.72167 4.81641 2.10938 4.81641H4.74609C5.36555 4.81641 5.92249 4.47223 6.19952 3.91816C6.2016 3.91409 6.20357 3.90997 6.20557 3.90586L6.92121 2.40205C6.95914 2.32984 7.0329 2.28516 7.11478 2.28516H10.9353C11.0172 2.28516 11.091 2.32984 11.1289 2.40202L11.8445 3.90582C11.8465 3.90994 11.8485 3.91405 11.8506 3.91813C12.1276 4.47219 12.6846 4.81637 13.304 4.81637H15.8906C16.2783 4.81637 16.5938 5.13179 16.5938 5.5195V15.0117Z" fill="#A2B1C6"/>
+<path d="M15.1875 6.22266H13.7812V7.62891H15.1875V6.22266Z" fill="#A2B1C6"/>
+</svg>

src/components/svg/png.vue

@@ -0,0 +1,18 @@
+<template>
+  <svg
+    width="18"
+    height="18"
+    viewBox="0 0 18 18"
+    fill="none"
+  >
+    <path d="M9 5.51953C6.57686 5.51953 4.60547 7.49092 4.60547 9.91406C4.60547 12.3372 6.57686 14.3086 9 14.3086C11.4231 14.3086 13.3945 12.3372 13.3945 9.91406C13.3945 7.49092 11.4231 5.51953 9 5.51953ZM9 12.9023C7.35226 12.9023 6.01172 11.5618 6.01172 9.91406C6.01172 8.26632 7.35226 6.92578 9 6.92578C10.6477 6.92578 11.9883 8.26632 11.9883 9.91406C11.9883 11.5618 10.6477 12.9023 9 12.9023Z" fill="#A2B1C6"/>
+    <path d="M15.8906 3.41016H13.304C13.2221 3.41016 13.1483 3.36547 13.1104 3.29319L12.3948 1.78945C12.3928 1.78534 12.3908 1.78126 12.3887 1.77718C12.1117 1.22312 11.5548 0.878906 10.9353 0.878906H7.11478C6.49529 0.878906 5.93835 1.22312 5.66135 1.77722C5.65928 1.7813 5.65731 1.78538 5.65534 1.78949L4.9397 3.2933C4.90173 3.36547 4.82797 3.41016 4.74609 3.41016H2.10938C0.946266 3.41016 0 4.35642 0 5.51953V15.0117C0 16.1748 0.946266 17.1211 2.10938 17.1211H15.8906C17.0537 17.1211 18 16.1748 18 15.0117V5.51953C18 4.35642 17.0537 3.41016 15.8906 3.41016ZM16.5938 15.0117C16.5938 15.3994 16.2783 15.7148 15.8906 15.7148H2.10938C1.72167 15.7148 1.40625 15.3994 1.40625 15.0117V5.51953C1.40625 5.13183 1.72167 4.81641 2.10938 4.81641H4.74609C5.36555 4.81641 5.92249 4.47223 6.19952 3.91816C6.2016 3.91409 6.20357 3.90997 6.20557 3.90586L6.92121 2.40205C6.95914 2.32984 7.0329 2.28516 7.11478 2.28516H10.9353C11.0172 2.28516 11.091 2.32984 11.1289 2.40202L11.8445 3.90582C11.8465 3.90994 11.8485 3.91405 11.8506 3.91813C12.1276 4.47219 12.6846 4.81637 13.304 4.81637H15.8906C16.2783 4.81637 16.5938 5.13179 16.5938 5.5195V15.0117Z" fill="#A2B1C6"/>
+    <path d="M15.1875 6.22266H13.7812V7.62891H15.1875V6.22266Z" fill="#A2B1C6"/>
+  </svg>
+</template>
+
+<script>
+export default {
+  name: 'PngIcon'
+}
+</script>

src/components/svg/run.vue

@@ -0,0 +1,17 @@
+<template>
+  <svg
+    width="12"
+    height="13"
+    viewBox="0 0 12 13"
+    fill="none"
+  >
+    <path d="M11.1624 6.94358L0.770043 12.9436L0.770043 0.943573L11.1624 6.94358Z" fill="#A2B1C6"/>
+  </svg>
+</template>
+
+<script>
+
+export default {
+  name: 'RunIcon'
+}
+</script>

src/components/svg/sort.vue

@@ -0,0 +1,45 @@
+<template>
+  <svg
+    :class="['sort-icon', { horizontal }, { asc }]"
+    width="6"
+    height="12"
+    viewBox="0 0 6 12"
+    fill="none"
+  >
+    <path d="M2.99932 -3.63032e-05C2.75092 -3.63032e-05 2.54932 0.201563 2.54932 0.449964L2.54932 11.55C2.54932 11.7984 2.75092 12 2.99932 12C3.24772 12 3.44932 11.7984 3.44932 11.55L3.44932 0.449964C3.44932 0.201563 3.24772 -3.63032e-05 2.99932 -3.63032e-05Z" fill="#506784"/>
+    <path d="M2.99915 1.80492e-05C2.8839 1.80492e-05 2.76865 0.0438534 2.68109 0.132073L0.581055 2.232C0.405273 2.40789 0.405273 2.69287 0.581055 2.86865C0.756946 3.04443 1.04193 3.04443 1.21771 2.86865L2.99969 1.08667L4.78168 2.86865C4.95746 3.04443 5.24255 3.04443 5.41833 2.86865C5.59412 2.69287 5.59412 2.40789 5.41833 2.232L3.3183 0.132073C3.22953 0.0438534 3.11428 1.80492e-05 2.99915 1.80492e-05V1.80492e-05Z" fill="#506784"/>
+  </svg>
+</template>
+
+<script>
+
+export default {
+  name: 'SortIcon',
+  props: {
+    horizontal: {
+      type: Boolean,
+      required: false,
+      default: false
+    },
+    asc: {
+      type: Boolean,
+      required: false,
+      default: true
+    }
+  }
+}
+</script>
+
+<style scoped>
+svg.asc {
+  transform: rotate(180deg);
+}
+
+svg.horizontal {
+  transform: rotate(-90deg);
+}
+
+svg.horizontal.asc {
+  transform: rotate(90deg);
+}
+</style>

src/components/svg/sqlEditor.vue

@@ -0,0 +1,25 @@
+<template>
+  <svg
+    width="18"
+    height="19"
+    viewBox="0 0 18 19"
+    fill="none"
+  >
+    <g clip-path="url(#clip0)">
+      <path d="M4.5 1.51343H10.5L15 6.01343V8.45284H13.5V6.76343H9.75V3.01343H4.5V8.45284H3V3.01343C3 2.18843 3.675 1.51343 4.5 1.51343Z" fill="#A2B1C6"/>
+      <path d="M4.28369 14.8127C4.28369 14.5872 4.20312 14.4114 4.04199 14.2854C3.88379 14.1594 3.604 14.0291 3.20264 13.8943C2.80127 13.7595 2.47314 13.6292 2.21826 13.5032C1.38916 13.0959 0.974609 12.5364 0.974609 11.8245C0.974609 11.47 1.07715 11.158 1.28223 10.8884C1.49023 10.616 1.7832 10.405 2.16113 10.2556C2.53906 10.1033 2.96387 10.0271 3.43555 10.0271C3.89551 10.0271 4.30713 10.1091 4.67041 10.2732C5.03662 10.4373 5.3208 10.6716 5.52295 10.9763C5.7251 11.2781 5.82617 11.6238 5.82617 12.0134H4.28809C4.28809 11.7527 4.20752 11.5505 4.04639 11.407C3.88818 11.2634 3.67285 11.1917 3.40039 11.1917C3.125 11.1917 2.90674 11.2532 2.74561 11.3762C2.5874 11.4963 2.5083 11.6501 2.5083 11.8376C2.5083 12.0017 2.59619 12.1511 2.77197 12.2859C2.94775 12.4177 3.25684 12.5554 3.69922 12.699C4.1416 12.8396 4.50488 12.9919 4.78906 13.156C5.48047 13.5544 5.82617 14.1038 5.82617 14.804C5.82617 15.3635 5.61523 15.803 5.19336 16.1223C4.77148 16.4417 4.19287 16.6013 3.45752 16.6013C2.93896 16.6013 2.46875 16.509 2.04688 16.3245C1.62793 16.137 1.31152 15.8821 1.09766 15.5598C0.886719 15.2346 0.78125 14.8611 0.78125 14.4392H2.32812C2.32812 14.782 2.41602 15.0354 2.5918 15.1995C2.77051 15.3606 3.05908 15.4412 3.45752 15.4412C3.7124 15.4412 3.91309 15.387 4.05957 15.2786C4.20898 15.1672 4.28369 15.012 4.28369 14.8127ZM12.0444 13.446C12.0444 14.0378 11.9463 14.5549 11.75 14.9973C11.5537 15.4368 11.2827 15.7898 10.937 16.0564L11.9697 16.8738L11.0161 17.6824L9.64062 16.575C9.51172 16.5925 9.38281 16.6013 9.25391 16.6013C8.70898 16.6013 8.22559 16.4753 7.80371 16.2234C7.38184 15.9714 7.05225 15.6111 6.81494 15.1423C6.58057 14.6736 6.45898 14.1345 6.4502 13.5251V13.1868C6.4502 12.5569 6.56445 12.0032 6.79297 11.5256C7.02441 11.0481 7.35254 10.679 7.77734 10.4182C8.20508 10.1575 8.69434 10.0271 9.24512 10.0271C9.78711 10.0271 10.2705 10.156 10.6953 10.4138C11.1201 10.6716 11.4497 11.0393 11.6841 11.5168C11.9214 11.9915 12.0415 12.5364 12.0444 13.1516V13.446ZM10.4756 13.178C10.4756 12.5422 10.3687 12.0603 10.1548 11.7322C9.94385 11.4011 9.64062 11.2356 9.24512 11.2356C8.83789 11.2356 8.53174 11.3982 8.32666 11.7234C8.12158 12.0486 8.01758 12.5247 8.01465 13.1516V13.446C8.01465 14.0759 8.11865 14.5593 8.32666 14.8962C8.53467 15.2302 8.84375 15.3972 9.25391 15.3972C9.64648 15.3972 9.94678 15.2317 10.1548 14.9006C10.3657 14.5696 10.4727 14.0935 10.4756 13.4724V13.178ZM14.3735 15.3269H17.0586V16.5134H12.8311V10.115H14.3735V15.3269Z" fill="#A2B1C6"/>
+    </g>
+    <defs>
+      <clipPath id="clip0">
+        <rect width="18" height="18" fill="white" transform="translate(0 0.0134277)"/>
+      </clipPath>
+    </defs>
+  </svg>
+</template>
+
+<script>
+
+export default {
+  name: 'SqlEditorIcon'
+}
+</script>

src/components/svg/table.vue

@@ -0,0 +1,21 @@
+<template>
+  <svg
+    width="18"
+    height="18"
+    viewBox="0 0 18 18"
+    fill="none"
+  >
+    <path fill-rule="evenodd" clip-rule="evenodd" d="M14.5 2.16512L3.5 2.16999C2.675 2.16999 2 2.84499 2 3.66999V14.3349C2 15.1599 2.675 15.8349 3.5 15.8349L14.5 15.83C15.3327 15.83 16 15.1551 16 14.33V3.66512C16 2.83511 15.33 2.16512 14.5 2.16512ZM14.5014 3.66512L3.49878 3.66999V14.33L14.5014 14.3251V3.66512Z" fill="#A2B1C6"/>
+    <path fill-rule="evenodd" clip-rule="evenodd" d="M6.27319 14.7069L6.27319 3.32135L7.77319 3.32135L7.77319 14.7069L6.27319 14.7069Z" fill="#A2B1C6"/>
+    <path fill-rule="evenodd" clip-rule="evenodd" d="M10.2639 14.6932L10.2639 3.30772L11.7639 3.30772L11.7639 14.6932L10.2639 14.6932Z" fill="#A2B1C6"/>
+    <path fill-rule="evenodd" clip-rule="evenodd" d="M15.5108 7.48325H2.4895V5.98325H15.5108V7.48325Z" fill="#A2B1C6"/>
+    <path fill-rule="evenodd" clip-rule="evenodd" d="M15.5108 11.6056H2.4895V10.1056H15.5108V11.6056Z" fill="#A2B1C6"/>
+  </svg>
+</template>
+
+<script>
+
+export default {
+  name: 'TableIcon'
+}
+</script>

src/db.utils.js

@@ -1,44 +0,0 @@
-export default {
-  * generateChunks (arr, size) {
-    const count = Math.ceil(arr.length / size)
-
-    for (let i = 0; i <= count - 1; i++) {
-      const start = size * i
-      const end = start + size
-      yield arr.slice(start, end)
-    }
-  },
-
-  getInsertStmt (columns) {
-    const colList = `"${columns.join('", "')}"`
-    const params = columns.map(() => '?').join(', ')
-    return `INSERT INTO csv_import (${colList}) VALUES (${params});`
-  },
-
-  getCreateStatement (columns, values) {
-    let result = 'CREATE table csv_import('
-    columns.forEach((col, index) => {
-    // Get the first row of values to determine types
-      const value = values[0][index]
-      let type = ''
-      switch (typeof value) {
-        case 'number': {
-          type = 'REAL'
-          break
-        }
-        case 'boolean': {
-          type = 'INTEGER'
-          break
-        }
-        case 'string': {
-          type = 'TEXT'
-          break
-        }
-        default: type = 'TEXT'
-      }
-      result += `"${col}" ${type}, `
-    })
-    result = result.replace(/,\s$/, ');')
-    return result
-  }
-}

src/lib/database/_sql.js

@@ -1,9 +1,20 @@
 import initSqlJs from 'sql.js/dist/sql-wasm.js'
-import dbUtils from '@/db.utils'
+import dbUtils from './_statements'
 
 let SQL = null
 const sqlModuleReady = initSqlJs().then(sqlModule => { SQL = sqlModule })
 
+function _getDataSourcesFromSqlResult (sqlResult) {
+  if (!sqlResult) {
+    return {}
+  }
+  const dataSorces = {}
+  sqlResult.columns.forEach((column, index) => {
+    dataSorces[column] = sqlResult.values.map(row => row[index])
+  })
+  return dataSorces
+}
+
 export default class Sql {
   constructor () {
     this.db = null
@@ -36,16 +47,26 @@ export default class Sql {
     if (!sql) {
       throw new Error('exec: Missing query string')
     }
-    return this.db.exec(sql, params)
+    const sqlResults = this.db.exec(sql, params)
+    return sqlResults.map(result => {
+      return {
+        columns: result.columns,
+        values: _getDataSourcesFromSqlResult(result)
+      }
+    })
   }
 
-  import (columns, values, progressCounterId, progressCallback, chunkSize = 1500) {
-    this.createDb()
-    this.db.exec(dbUtils.getCreateStatement(columns, values))
-    const chunks = dbUtils.generateChunks(values, chunkSize)
-    const chunksAmount = Math.ceil(values.length / chunkSize)
+  import (tabName, data, progressCounterId, progressCallback, chunkSize = 1500) {
+    if (this.db === null) {
+      this.createDb()
+    }
+    const columns = data.columns
+    const rowCount = data.values[columns[0]].length
+    this.db.exec(dbUtils.getCreateStatement(tabName, data.values))
+    const chunks = dbUtils.generateChunks(data.values, chunkSize)
+    const chunksAmount = Math.ceil(rowCount / chunkSize)
     let count = 0
-    const insertStr = dbUtils.getInsertStmt(columns)
+    const insertStr = dbUtils.getInsertStmt(tabName, columns)
     const insertStmt = this.db.prepare(insertStr)
 
     progressCallback({ progress: 0, id: progressCounterId })

src/lib/database/_statements.js

@@ -0,0 +1,95 @@
+import sqliteParser from 'sqlite-parser'
+
+export default {
+  * generateChunks (data, size) {
+    const matrix = Object.keys(data).map(col => data[col])
+    const [row] = matrix
+    const transposedMatrix = row.map((value, column) => matrix.map(row => row[column]))
+
+    const count = Math.ceil(transposedMatrix.length / size)
+
+    for (let i = 0; i <= count - 1; i++) {
+      const start = size * i
+      const end = start + size
+      yield transposedMatrix.slice(start, end)
+    }
+  },
+
+  getInsertStmt (tabName, columns) {
+    const colList = `"${columns.join('", "')}"`
+    const params = columns.map(() => '?').join(', ')
+    return `INSERT INTO "${tabName}" (${colList}) VALUES (${params});`
+  },
+
+  getCreateStatement (tabName, data) {
+    let result = `CREATE table "${tabName}"(`
+    for (const col in data) {
+      // Get the first row of values to determine types
+      const value = data[col][0]
+      let type = ''
+      switch (typeof value) {
+        case 'number': {
+          type = 'REAL'
+          break
+        }
+        case 'boolean': {
+          type = 'INTEGER'
+          break
+        }
+        case 'string': {
+          type = 'TEXT'
+          break
+        }
+        default: type = 'TEXT'
+      }
+      result += `"${col}" ${type}, `
+    }
+
+    result = result.replace(/,\s$/, ');')
+    return result
+  },
+
+  getAst (sql) {
+    // There is a bug is sqlite-parser
+    // It throws an error if tokenizer has an arguments:
+    // https://github.com/codeschool/sqlite-parser/issues/59
+    const fixedSql = sql
+      .replace(/(tokenize=[^,]+)"tokenchars=.+?"/, '$1')
+      .replace(/(tokenize=[^,]+)"remove_diacritics=.+?"/, '$1')
+      .replace(/(tokenize=[^,]+)"separators=.+?"/, '$1')
+      .replace(/tokenize=.+?(,|\))/, 'tokenize=unicode61$1')
+
+    return sqliteParser(fixedSql)
+  },
+
+  /*
+   * Return an array of columns with name and type. E.g.:
+   * [
+   *   { name: 'id',    type: 'INTEGER' },
+   *   { name: 'title', type: 'NVARCHAR(30)' },
+   * ]
+  */
+  getColumns (sql) {
+    const columns = []
+    const ast = this.getAst(sql)
+
+    const columnDefinition = ast.statement[0].format === 'table'
+      ? ast.statement[0].definition
+      : ast.statement[0].result.args.expression // virtual table
+
+    columnDefinition.forEach(item => {
+      if (item.variant === 'column' && ['identifier', 'definition'].includes(item.type)) {
+        let type = item.datatype ? item.datatype.variant : 'N/A'
+        if (item.datatype && item.datatype.args) {
+          type = type + '(' + item.datatype.args.expression[0].value
+          if (item.datatype.args.expression.length === 2) {
+            type = type + ', ' + item.datatype.args.expression[1].value
+          }
+          type = type + ')'
+        }
+        columns.push({ name: item.name, type: type })
+      }
+    })
+    return columns
+  }
+}

src/lib/database/_worker.js

@@ -1,5 +1,5 @@
 import registerPromiseWorker from 'promise-worker/register'
-import Sql from '@/sql'
+import Sql from './_sql'
 
 const sqlReady = Sql.build()
 
@@ -8,10 +8,17 @@ function processMsg (sql) {
   switch (data && data.action) {
     case 'open':
       return sql.open(data.buffer)
+    case 'reopen':
+      return sql.open(sql.export())
     case 'exec':
       return sql.exec(data.sql, data.params)
     case 'import':
-      return sql.import(data.columns, data.values, data.progressCounterId, postMessage)
+      return sql.import(
+        data.tabName,
+        data.data,
+        data.progressCounterId,
+        postMessage
+      )
     case 'export':
       return sql.export()
     case 'close':

src/lib/database/index.js

@@ -1,8 +1,8 @@
-import sqliteParser from 'sqlite-parser'
-import fu from '@/file.utils'
+import stms from './_statements'
+import fu from '@/lib/utils/fileIo'
 // We can import workers like so because of worker-loader:
 // https://webpack.js.org/loaders/worker-loader/
-import Worker from '@/db.worker.js'
+import Worker from './_worker.js'
 
 // Use promise-worker in order to turn worker into the promise based one:
 // https://github.com/nolanlawson/promise-worker
@@ -20,6 +20,8 @@ export default {
 let progressCounterIds = 0
 class Database {
   constructor (worker) {
+    this.dbName = null
+    this.schema = null
     this.worker = worker
     this.pw = new PromiseWorker(worker)
 
@@ -50,33 +52,34 @@ class Database {
     delete this.importProgresses[id]
   }
 
-  async createDb (name, data, progressCounterId) {
+  async addTableFromCsv (tabName, data, progressCounterId) {
     const result = await this.pw.postMessage({
       action: 'import',
-      columns: data.columns,
-      values: data.values,
-      progressCounterId
+      data,
+      progressCounterId,
+      tabName
     })
 
     if (result.error) {
       throw new Error(result.error)
     }
-
-    return await this.getSchema(name)
+    this.dbName = this.dbName || 'database'
+    this.refreshSchema()
   }
 
   async loadDb (file) {
-    const fileContent = await fu.readAsArrayBuffer(file)
+    const fileContent = file ? await fu.readAsArrayBuffer(file) : null
     const res = await this.pw.postMessage({ action: 'open', buffer: fileContent })
 
     if (res.error) {
       throw new Error(res.error)
     }
 
-    return this.getSchema(file.name.replace(/\.[^.]+$/, ''))
+    this.dbName = file ? fu.getFileName(file) : 'database'
+    this.refreshSchema()
   }
 
-  async getSchema (name) {
+  async refreshSchema () {
     const getSchemaSql = `
       SELECT name, sql
       FROM sqlite_master
@@ -85,21 +88,21 @@ class Database {
     const result = await this.execute(getSchemaSql)
     // Parse DDL statements to get column names and types
     const parsedSchema = []
-    result.values.forEach(item => {
-      parsedSchema.push({
-        name: item[0],
-        columns: getColumns(item[1])
+    if (result && result.values && result.values.name) {
+      result.values.name.forEach((table, index) => {
+        parsedSchema.push({
+          name: table,
+          columns: stms.getColumns(result.values.sql[index])
+        })
       })
-    })
-
-    // Return db name and schema
-    return {
-      dbName: name,
-      schema: parsedSchema
     }
+
+    // Refresh schema
+    this.schema = parsedSchema
   }
 
   async execute (commands) {
+    await this.pw.postMessage({ action: 'reopen' })
     const results = await this.pw.postMessage({ action: 'exec', sql: commands })
 
     if (results.error) {
@@ -117,48 +120,27 @@ class Database {
     }
     fu.exportToFile(data, fileName)
   }
-}
 
-function getAst (sql) {
-  // There is a bug is sqlite-parser
-  // It throws an error if tokenizer has an arguments:
-  // https://github.com/codeschool/sqlite-parser/issues/59
-  const fixedSql = sql
-    .replace(/(?<=tokenize=.+)"tokenchars=.+"/, '')
-    .replace(/(?<=tokenize=.+)"remove_diacritics=.+"/, '')
-    .replace(/(?<=tokenize=.+)"separators=.+"/, '')
-    .replace(/tokenize=.+(?=(,|\)))/, 'tokenize=unicode61')
-
-  return sqliteParser(fixedSql)
-}
-
-/*
- * Return an array of columns with name and type. E.g.:
- * [
- *   { name: 'id',    type: 'INTEGER' },
- *   { name: 'title', type: 'NVARCHAR(30)' },
- * ]
-*/
-function getColumns (sql) {
-  const columns = []
-  const ast = getAst(sql)
-
-  const columnDefinition = ast.statement[0].format === 'table'
-    ? ast.statement[0].definition
-    : ast.statement[0].result.args.expression // virtual table
-
-  columnDefinition.forEach(item => {
-    if (item.variant === 'column' && ['identifier', 'definition'].includes(item.type)) {
-      let type = item.datatype ? item.datatype.variant : 'N/A'
-      if (item.datatype && item.datatype.args) {
-        type = type + '(' + item.datatype.args.expression[0].value
-        if (item.datatype.args.expression.length === 2) {
-          type = type + ', ' + item.datatype.args.expression[1].value
-        }
-        type = type + ')'
-      }
-      columns.push({ name: item.name, type: type })
+  async validateTableName (name) {
+    if (name.startsWith('sqlite_')) {
+      throw new Error("Table name can't start with sqlite_")
     }
-  })
-  return columns
+
+    if (/[^\w]/.test(name)) {
+      throw new Error('Table name can contain only letters, digits and underscores')
+    }
+
+    if (/^(\d)/.test(name)) {
+      throw new Error("Table name can't start with a digit")
+    }
+
+    await this.execute(`BEGIN; CREATE TABLE "${name}"(id); ROLLBACK;`)
+  }
+
+  sanitizeTableName (tabName) {
+    return tabName
+      .replace(/[^\w]/g, '_') // replace everything that is not letter, digit or _  with _
+      .replace(/^(\d)/, '_$1') // add _ at beginning if starts with digit
+      .replace(/_{2,}/g, '_') // replace multiple _ with one _
+  }
 }

src/lib/storedInquiries/_migrations.js

@@ -0,0 +1,12 @@
+export default {
+  _migrate (installedVersion, inquiries) {
+    if (installedVersion === 1) {
+      inquiries.forEach(inquire => {
+        inquire.viewType = 'chart'
+        inquire.viewOptions = inquire.chart
+        delete inquire.chart
+      })
+      return inquiries
+    }
+  }
+}

src/lib/storedInquiries/index.js

@@ -0,0 +1,120 @@
+import { nanoid } from 'nanoid'
+import fu from '@/lib/utils/fileIo'
+import migration from './_migrations'
+
+const migrate = migration._migrate
+
+export default {
+  version: 2,
+  getStoredInquiries () {
+    let myInquiries = JSON.parse(localStorage.getItem('myInquiries'))
+    if (!myInquiries) {
+      const oldInquiries = localStorage.getItem('myQueries')
+      if (oldInquiries) {
+        myInquiries = migrate(1, JSON.parse(oldInquiries))
+        this.updateStorage(myInquiries)
+        return myInquiries
+      }
+      return []
+    }
+
+    return (myInquiries && myInquiries.inquiries) || []
+  },
+
+  duplicateInquiry (baseInquiry) {
+    const newInquiry = JSON.parse(JSON.stringify(baseInquiry))
+    newInquiry.name = newInquiry.name + ' Copy'
+    newInquiry.id = nanoid()
+    newInquiry.createdAt = new Date()
+    delete newInquiry.isPredefined
+
+    return newInquiry
+  },
+
+  isTabNeedName (inquiryTab) {
+    const isFromScratch = !inquiryTab.initName
+    return inquiryTab.isPredefined || isFromScratch
+  },
+
+  save (inquiryTab, newName) {
+    const value = {
+      id: inquiryTab.isPredefined ? nanoid() : inquiryTab.id,
+      query: inquiryTab.query,
+      viewType: inquiryTab.$refs.dataView.mode,
+      viewOptions: inquiryTab.$refs.dataView.getOptionsForSave(),
+      name: newName || inquiryTab.initName
+    }
+
+    // Get inquiries from local storage
+    const myInquiries = this.getStoredInquiries()
+
+    // Set createdAt
+    if (newName) {
+      value.createdAt = new Date()
+    } else {
+      var inquiryIndex = myInquiries.findIndex(oldInquiry => oldInquiry.id === inquiryTab.id)
+      value.createdAt = myInquiries[inquiryIndex].createdAt
+    }
+
+    // Insert in inquiries list
+    if (newName) {
+      myInquiries.push(value)
+    } else {
+      myInquiries[inquiryIndex] = value
+    }
+
+    // Save to local storage
+    this.updateStorage(myInquiries)
+    return value
+  },
+
+  updateStorage (inquiries) {
+    localStorage.setItem('myInquiries', JSON.stringify({ version: this.version, inquiries }))
+  },
+
+  serialiseInquiries (inquiryList) {
+    const preparedData = JSON.parse(JSON.stringify(inquiryList))
+    preparedData.forEach(inquiry => delete inquiry.isPredefined)
+    return JSON.stringify({ version: this.version, inquiries: preparedData }, null, 4)
+  },
+
+  deserialiseInquiries (str) {
+    const inquiries = JSON.parse(str)
+    let inquiryList = []
+    if (!inquiries.version) {
+      // Turn data into array if they are not
+      inquiryList = !Array.isArray(inquiries) ? [inquiries] : inquiries
+      inquiryList = migrate(1, inquiryList)
+    } else {
+      inquiryList = inquiries.inquiries || []
+    }
+
+    // Generate new ids if they are the same as existing inquiries
+    inquiryList.forEach(inquiry => {
+      const allInquiriesIds = this.getStoredInquiries().map(inquiry => inquiry.id)
+      if (allInquiriesIds.includes(inquiry.id)) {
+        inquiry.id = nanoid()
+      }
+    })
+
+    return inquiryList
+  },
+
+  importInquiries () {
+    return fu.importFile()
+      .then(str => {
+        return this.deserialiseInquiries(str)
+      })
+  },
+
+  async readPredefinedInquiries () {
+    const res = await fu.readFile('./inquiries.json')
+    const data = await res.json()
+
+    if (!data.version) {
+      return data.length > 0 ? migrate(1, data) : []
+    } else {
+      return data.inquiries
+    }
+  }
+}

src/lib/utils/fileIo.js

@@ -1,9 +1,18 @@
 export default {
-  exportToFile (str, fileName, type = 'octet/stream') {
+  isDatabase (file) {
+    const dbTypes = ['application/vnd.sqlite3', 'application/x-sqlite3']
+    return file.type
+      ? dbTypes.includes(file.type)
+      : /\.(db|sqlite(3)?)+$/.test(file.name)
+  },
+
+  getFileName (file) {
+    return file.name.replace(/\.[^.]+$/, '')
+  },
+
+  downloadFromUrl (url, fileName) {
     // Create downloader
     const downloader = document.createElement('a')
-    const blob = new Blob([str], { type })
-    const url = URL.createObjectURL(blob)
     downloader.href = url
     downloader.download = fileName
 
@@ -14,6 +23,12 @@ export default {
     URL.revokeObjectURL(url)
   },
 
+  async exportToFile (str, fileName, type = 'octet/stream') {
+    const blob = new Blob([str], { type })
+    const url = URL.createObjectURL(blob)
+    this.downloadFromUrl(url, fileName)
+  },
+
   /**
    * Note: if user press Cancel in file choosing dialog
    * it will be an unsettled promise. But it's grabbed by

src/lib/utils/time.js

@@ -0,0 +1,15 @@
+export default {
+  getPeriod (start, end) {
+    const diff = end.getTime() - start.getTime()
+    const seconds = diff / 1000
+    return seconds.toFixed(3) + 's'
+  },
+
+  debounce (func, ms) {
+    let timeout
+    return function () {
+      clearTimeout(timeout)
+      timeout = setTimeout(() => func.apply(this, arguments), ms)
+    }
+  }
+}

src/main.js

@@ -1,7 +1,7 @@
 import Vue from 'vue'
-import App from './App.vue'
-import router from './router'
-import store from './store'
+import App from '@/App.vue'
+import router from '@/router'
+import store from '@/store'
 import { VuePlugin } from 'vuera'
 import VModal from 'vue-js-modal'
 
@@ -11,9 +11,11 @@ import '@/assets/styles/tables.css'
 import '@/assets/styles/dialogs.css'
 import '@/assets/styles/tooltips.css'
 import '@/assets/styles/messages.css'
+import 'vue-multiselect/dist/vue-multiselect.min.css'
+import '@/assets/styles/multiselect.css'
 
 if (!['localhost', '127.0.0.1'].includes(location.hostname)) {
-  import('../registerServiceWorker') // eslint-disable-line no-unused-expressions
+  import('./registerServiceWorker') // eslint-disable-line no-unused-expressions
 }
 
 Vue.use(VuePlugin)

src/mixins/tooltips.js

@@ -1,19 +0,0 @@
-export default {
-  data () {
-    return {
-      tooltipStyle: {
-        visibility: 'hidden'
-      }
-    }
-  },
-  methods: {
-    showTooltip (e) {
-      this.tooltipStyle.top = e.clientY - 12 + 'px'
-      this.tooltipStyle.left = e.clientX + 12 + 'px'
-      this.tooltipStyle.visibility = 'visible'
-    },
-    hideTooltip () {
-      this.tooltipStyle.visibility = 'hidden'
-    }
-  }
-}

src/registerServiceWorker.js

@@ -13,7 +13,7 @@ function invokeServiceWorkerUpdateFlow (registration) {
 
 if ('serviceWorker' in navigator) {
   window.addEventListener('load', async () => {
-    const registration = await navigator.serviceWorker.register('/service-worker.js')
+    const registration = await navigator.serviceWorker.register('service-worker.js')
     // ensure the case when the updatefound event was missed is also handled
     // by re-invoking the prompt when there's a waiting Service Worker
     if (registration.waiting) {

src/router.js

@@ -0,0 +1,50 @@
+import Vue from 'vue'
+import VueRouter from 'vue-router'
+import Workspace from '@/views/Main/Workspace'
+import Inquiries from '@/views/Main/Inquiries'
+import Welcome from '@/views/Welcome'
+import Main from '@/views/Main'
+import store from '@/store'
+import database from '@/lib/database'
+
+Vue.use(VueRouter)
+
+const routes = [
+  {
+    path: '/',
+    name: 'Welcome',
+    component: Welcome
+  },
+  {
+    path: '/',
+    name: 'Main',
+    component: Main,
+    children: [
+      {
+        path: '/workspace',
+        name: 'Workspace',
+        component: Workspace
+      },
+      {
+        path: '/inquiries',
+        name: 'Inquiries',
+        component: Inquiries
+      }
+    ]
+  }
+]
+
+const router = new VueRouter({
+  routes
+})
+
+router.beforeEach(async (to, from, next) => {
+  if (!store.state.db) {
+    const newDb = database.getNewDatabase()
+    await newDb.loadDb()
+    store.commit('setDb', newDb)
+  }
+  next()
+})
+
+export default router

src/router/index.js

@@ -1,39 +0,0 @@
-import Vue from 'vue'
-import VueRouter from 'vue-router'
-import Editor from '@/views/Editor'
-import MyQueries from '@/views/MyQueries'
-import Home from '@/views/Home'
-import MainView from '@/views/MainView'
-
-Vue.use(VueRouter)
-
-const routes = [
-  {
-    path: '/',
-    name: 'Welcome',
-    component: Home
-  },
-  {
-    path: '/',
-    name: 'MainView',
-    component: MainView,
-    children: [
-      {
-        path: '/editor',
-        name: 'Editor',
-        component: Editor
-      },
-      {
-        path: '/my-queries',
-        name: 'MyQueries',
-        component: MyQueries
-      }
-    ]
-  }
-]
-
-const router = new VueRouter({
-  routes
-})
-
-export default router

src/store/actions.js

@@ -0,0 +1,32 @@
+import { nanoid } from 'nanoid'
+
+export default {
+  async addTab ({ state }, data) {
+    const tab = data ? JSON.parse(JSON.stringify(data)) : {}
+    // If no data then create a new blank one...
+    // No data.id means to create new tab, but not blank,
+    // e.g. with 'select * from csv_import' inquiry after csv import
+    if (!data || !data.id) {
+      tab.id = nanoid()
+      tab.name = null
+      tab.tempName = state.untitledLastIndex
+        ? `Untitled ${state.untitledLastIndex}`
+        : 'Untitled'
+      tab.viewType = 'chart'
+      tab.viewOptions = undefined
+      tab.isSaved = false
+    } else {
+      tab.isSaved = true
+    }
+
+    // add new tab only if was not already opened
+    if (!state.tabs.some(openedTab => openedTab.id === tab.id)) {
+      state.tabs.push(tab)
+      if (!tab.name) {
+        state.untitledLastIndex += 1
+      }
+    }
+
+    return tab.id
+  }
+}

src/store/index.js

@@ -1,112 +1,11 @@
 import Vue from 'vue'
 import Vuex from 'vuex'
-import { nanoid } from 'nanoid'
+import state from '@/store/state'
+import mutations from '@/store/mutations'
+import actions from '@/store/actions'
 
 Vue.use(Vuex)
 
-export const state = {
-  schema: null,
-  dbFile: null,
-  dbName: null,
-  tabs: [],
-  currentTab: null,
-  currentTabId: null,
-  untitledLastIndex: 0,
-  predefinedQueries: [],
-  db: null
-}
-
-export const mutations = {
-  setDb (state, db) {
-    if (state.db) {
-      state.db.shutDown()
-    }
-    state.db = db
-  },
-  saveSchema (state, { dbName, schema }) {
-    state.dbName = dbName
-    state.schema = schema
-  },
-
-  updateTab (state, { index, name, id, query, chart, isUnsaved }) {
-    const tab = state.tabs[index]
-    const oldId = tab.id
-
-    if (id && state.currentTabId === oldId) {
-      state.currentTabId = id
-    }
-
-    if (id) { tab.id = id }
-    if (name) { tab.name = name }
-    if (query) { tab.query = query }
-    if (chart) { tab.chart = chart }
-    if (isUnsaved !== undefined) { tab.isUnsaved = isUnsaved }
-    if (!isUnsaved) {
-      // Saved query is not predefined
-      delete tab.isPredefined
-    }
-
-    Vue.set(state.tabs, index, tab)
-  },
-  deleteTab (state, index) {
-    // If closing tab is the current opened
-    if (state.tabs[index].id === state.currentTabId) {
-      if (index < state.tabs.length - 1) {
-        state.currentTabId = state.tabs[index + 1].id
-      } else if (index > 0) {
-        state.currentTabId = state.tabs[index - 1].id
-      } else {
-        state.currentTabId = null
-        state.currentTab = null
-        state.untitledLastIndex = 0
-      }
-    }
-    state.tabs.splice(index, 1)
-  },
-  setCurrentTabId (state, id) {
-    state.currentTabId = id
-  },
-  setCurrentTab (state, tab) {
-    state.currentTab = tab
-  },
-  updatePredefinedQueries (state, queries) {
-    if (Array.isArray(queries)) {
-      state.predefinedQueries = queries
-    } else {
-      state.predefinedQueries = [queries]
-    }
-  }
-}
-
-export const actions = {
-  async addTab ({ state }, data) {
-    const tab = data ? JSON.parse(JSON.stringify(data)) : {}
-    // If no data then create a new blank one...
-    // No data.id means to create new tab, but not blank,
-    // e.g. with 'select * from csv_import' query after csv import
-    if (!data || !data.id) {
-      tab.id = nanoid()
-      tab.name = null
-      tab.tempName = state.untitledLastIndex
-        ? `Untitled ${state.untitledLastIndex}`
-        : 'Untitled'
-      tab.isUnsaved = true
-    } else {
-      tab.isUnsaved = false
-    }
-
-    // add new tab only if was not already opened
-    if (!state.tabs.some(openedTab => openedTab.id === tab.id)) {
-      state.tabs.push(tab)
-      if (!tab.name) {
-        state.untitledLastIndex += 1
-      }
-    }
-
-    return tab.id
-  }
-}
-
 export default new Vuex.Store({
   state,
   mutations,

src/store/mutations.js

@@ -0,0 +1,57 @@
+import Vue from 'vue'
+
+export default {
+  setDb (state, db) {
+    if (state.db) {
+      state.db.shutDown()
+    }
+    state.db = db
+  },
+
+  updateTab (state, { index, name, id, query, viewType, viewOptions, isSaved }) {
+    const tab = state.tabs[index]
+    const oldId = tab.id
+
+    if (id && state.currentTabId === oldId) {
+      state.currentTabId = id
+    }
+
+    if (id) { tab.id = id }
+    if (name) { tab.name = name }
+    if (query) { tab.query = query }
+    if (viewType) { tab.viewType = viewType }
+    if (viewOptions) { tab.viewOptions = viewOptions }
+    if (isSaved !== undefined) { tab.isSaved = isSaved }
+    if (isSaved) {
+      // Saved inquiry is not predefined
+      delete tab.isPredefined
+    }
+
+    Vue.set(state.tabs, index, tab)
+  },
+
+  deleteTab (state, index) {
+    // If closing tab is the current opened
+    if (state.tabs[index].id === state.currentTabId) {
+      if (index < state.tabs.length - 1) {
+        state.currentTabId = state.tabs[index + 1].id
+      } else if (index > 0) {
+        state.currentTabId = state.tabs[index - 1].id
+      } else {
+        state.currentTabId = null
+        state.currentTab = null
+        state.untitledLastIndex = 0
+      }
+    }
+    state.tabs.splice(index, 1)
+  },
+  setCurrentTabId (state, id) {
+    state.currentTabId = id
+  },
+  setCurrentTab (state, tab) {
+    state.currentTab = tab
+  },
+  updatePredefinedInquiries (state, inquiries) {
+    state.predefinedInquiries = Array.isArray(inquiries) ? inquiries : [inquiries]
+  }
+}

src/store/state.js

@@ -0,0 +1,8 @@
+export default {
+  tabs: [],
+  currentTab: null,
+  currentTabId: null,
+  untitledLastIndex: 0,
+  predefinedInquiries: [],
+  db: null
+}

src/storedQueries.js

@@ -1,96 +0,0 @@
-import { nanoid } from 'nanoid'
-import fu from '@/file.utils'
-
-export default {
-  getStoredQueries () {
-    return JSON.parse(localStorage.getItem('myQueries')) || []
-  },
-
-  duplicateQuery (baseQuery) {
-    const newQuery = JSON.parse(JSON.stringify(baseQuery))
-    newQuery.name = newQuery.name + ' Copy'
-    newQuery.id = nanoid()
-    newQuery.createdAt = new Date()
-    delete newQuery.isPredefined
-
-    return newQuery
-  },
-
-  isTabNeedName (queryTab) {
-    const isFromScratch = !queryTab.initName
-    return queryTab.isPredefined || isFromScratch
-  },
-
-  save (queryTab, newName) {
-    const value = {
-      id: queryTab.isPredefined ? nanoid() : queryTab.id,
-      query: queryTab.query,
-      chart: queryTab.$refs.chart.getChartStateForSave(),
-      name: newName || queryTab.initName
-    }
-
-    // Get queries from local storage
-    const myQueries = this.getStoredQueries()
-
-    // Set createdAt
-    if (newName) {
-      value.createdAt = new Date()
-    } else {
-      var queryIndex = myQueries.findIndex(oldQuery => oldQuery.id === queryTab.id)
-      value.createdAt = myQueries[queryIndex].createdAt
-    }
-
-    // Insert in queries list
-    if (newName) {
-      myQueries.push(value)
-    } else {
-      myQueries[queryIndex] = value
-    }
-
-    // Save to local storage
-    this.updateStorage(myQueries)
-    return value
-  },
-
-  updateStorage (value) {
-    localStorage.setItem('myQueries', JSON.stringify(value))
-  },
-
-  serialiseQueries (queryList) {
-    const preparedData = JSON.parse(JSON.stringify(queryList))
-    preparedData.forEach(query => delete query.isPredefined)
-    return JSON.stringify(preparedData, null, 4)
-  },
-
-  deserialiseQueries (str) {
-    let queryList = JSON.parse(str)
-    // Turn data into array if they are not
-    if (!Array.isArray(queryList)) {
-      queryList = [queryList]
-    }
-
-    // Generate new ids if they are the same as existing queries
-    queryList.forEach(query => {
-      const allQueriesIds = this.getStoredQueries().map(query => query.id)
-      if (allQueriesIds.includes(query.id)) {
-        query.id = nanoid()
-      }
-    })
-
-    return queryList
-  },
-
-  importQueries () {
-    return fu.importFile()
-      .then(data => {
-        return this.deserialiseQueries(data)
-      })
-  },
-
-  readPredefinedQueries () {
-    return fu.readFile('./queries.json')
-      .then(resp => {
-        return resp.json()
-      })
-  }
-}

src/time.js

@@ -1,36 +0,0 @@
-export default {
-  getPeriod (start, end) {
-    let diff = end.getTime() - start.getTime()
-    let result = ''
-
-    const days = Math.floor(diff / (1000 * 60 * 60 * 24))
-    diff -= days * (1000 * 60 * 60 * 24)
-    if (days) {
-      result += days + ' d '
-    }
-
-    const hours = Math.floor(diff / (1000 * 60 * 60))
-    diff -= hours * (1000 * 60 * 60)
-    if (hours) {
-      result += hours + ' h '
-    }
-
-    const mins = Math.floor(diff / (1000 * 60))
-    diff -= mins * (1000 * 60)
-    if (mins) {
-      result += mins + ' m '
-    }
-
-    const seconds = Math.floor(diff / (1000))
-    diff -= seconds * (1000)
-    if (seconds) {
-      result += seconds + ' s '
-    }
-
-    if (diff) {
-      result += diff + ' ms '
-    }
-
-    return result.replace(/\s$/, '')
-  }
-}

src/tooltipMixin.js

@@ -0,0 +1,37 @@
+export default {
+  data () {
+    return {
+      tooltipStyle: {
+        visibility: 'hidden'
+      }
+    }
+  },
+  computed: {
+    tooltipElement () {
+      return this.$refs.tooltip
+    }
+  },
+  methods: {
+    showTooltip (e, tooltipPosition) {
+      const position = tooltipPosition ? tooltipPosition.split('-') : ['top', 'right']
+      const offset = 12
+
+      if (position[0] === 'top') {
+        this.tooltipStyle.top = e.clientY - offset + 'px'
+      } else {
+        this.tooltipStyle.top = e.clientY + offset + 'px'
+      }
+
+      if (position[1] === 'right') {
+        this.tooltipStyle.left = e.clientX + offset + 'px'
+      } else {
+        this.tooltipStyle.left = e.clientX - offset - this.tooltipElement.offsetWidth + 'px'
+      }
+
+      this.tooltipStyle.visibility = 'visible'
+    },
+    hideTooltip () {
+      this.tooltipStyle.visibility = 'hidden'
+    }
+  }
+}

src/views/Editor.vue

@@ -1,74 +0,0 @@
-<template>
-  <div>
-    <splitpanes
-      class="schema-tabs-splitter"
-      :before="{ size: 20, max: 30 }"
-      :after="{ size: 80, max: 100 }"
-    >
-      <template #left-pane>
-        <schema v-if="$store.state.schema"/>
-        <div v-else id="empty-schema-container">
-          <div class="warning">
-            Database is not loaded. Queries can’t be run without database.
-          </div>
-          <db-uploader id="db-uploader" width="100%"/>
-        </div>
-      </template>
-      <template #right-pane>
-        <tabs />
-      </template>
-    </splitpanes>
-  </div>
-</template>
-
-<script>
-import Splitpanes from '@/components/Splitpanes'
-import Schema from '@/components/Schema'
-import Tabs from '@/components/Tabs'
-import DbUploader from '@/components/DbUploader'
-
-export default {
-  name: 'Editor',
-  components: {
-    Schema,
-    Splitpanes,
-    Tabs,
-    DbUploader
-  }
-}
-</script>
-
-<style scoped>
-.schema-tabs-splitter {
-  height: 100%;
-  background-color: var(--color-white);
-}
-#empty-schema-container {
-  display: flex;
-  flex-direction: column;
-  align-items: center;
-  min-width: 200px;
-  height: 100%;
-}
-
-#db-uploader {
-  flex-grow: 1;
-  padding: 24px;
-  width: 100%;
-  box-sizing: border-box;
-}
-
-.warning {
-  padding: 12px 24px;
-  width: 100%;
-  box-sizing: border-box;
-}
-
->>>.drop-area {
-  padding: 0 15px;
-}
-
->>>.drop-area .text {
-  max-width: 200px;
-}
-</style>