remove karma config

.github/workflows/test.yml

@@ -23,7 +23,10 @@ jobs:
           export DEBIAN_FRONTEND=noninteractive
           sudo add-apt-repository -y ppa:mozillateam/ppa
           sudo apt-get update
-          sudo apt-get install -y chromium-browser firefox-esr
+          sudo apt-get install -y \
+            chromium-browser \
+            firefox-esr \
+            xvfb
 
       - name: Update npm
         run: npm install -g npm@10
@@ -35,4 +38,4 @@ jobs:
         run: npm run lint -- --no-fix
 
       - name: Run karma tests
-        run: npm run test
+        run: xvfb-run -a npm test

README.md

@@ -9,7 +9,7 @@ of SQLite databases, CSV, JSON or NDJSON files.
 
 With sqliteviz you can:
 
-- run SQL queries against a SQLite database and create [Plotly][11] charts and pivot tables based on the result sets
+- run SQL queries against a SQLite database and create [Plotly][11] charts, graphs and pivot tables based on the result sets
 - import a CSV/JSON/NDJSON file into a SQLite database and visualize imported data
 - export result set to CSV file
 - manage inquiries and run them against different databases
@@ -33,7 +33,9 @@ It's a kind of middleground between [Plotly Falcon][1] and [Redash][2].
 
 ## Components
 
-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].
+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].
+Graphs are visualized with [Sigma.js][13] and [Graphology][14].
 
 [1]: https://github.com/plotly/falcon
 [2]: https://github.com/getredash/redash
@@ -47,3 +49,5 @@ It is built on top of [react-chart-editor][3], [PivotTable.js][12], [sql.js][4]
 [10]: https://github.com/lana-k/sqliteviz/wiki/Predefined-queries
 [11]: https://github.com/plotly/plotly.js
 [12]: https://github.com/nicolaskruchten/pivottable
+[13]: https://www.sigmajs.org/
+[14]: https://graphology.github.io/

package.json

@@ -1,6 +1,6 @@
 {
   "name": "sqliteviz",
-  "version": "0.27.1",
+  "version": "0.28.0",
   "license": "Apache-2.0",
   "private": true,
   "type": "module",

src/App.vue

@@ -33,48 +33,6 @@ export default {
 </script>
 
 <style>
-@font-face {
-  font-family: 'Open Sans';
-  src: url('@/assets/fonts/OpenSans-Regular.woff2');
-  font-weight: 400;
-  font-style: normal;
-}
-
-@font-face {
-  font-family: 'Open Sans';
-  src: url('@/assets/fonts/OpenSans-SemiBold.woff2');
-  font-weight: 600;
-  font-style: normal;
-}
-
-@font-face {
-  font-family: 'Open Sans';
-  src: url('@/assets/fonts/OpenSans-Bold.woff2');
-  font-weight: 700;
-  font-style: normal;
-}
-
-@font-face {
-  font-family: 'Open Sans';
-  src: url('@/assets/fonts/OpenSans-Italic.woff2');
-  font-weight: 400;
-  font-style: italic;
-}
-
-@font-face {
-  font-family: 'Open Sans';
-  src: url('@/assets/fonts/OpenSans-SemiBoldItalic.woff2');
-  font-weight: 600;
-  font-style: italic;
-}
-
-@font-face {
-  font-family: 'Open Sans';
-  src: url('@/assets/fonts/OpenSans-BoldItalic.woff2');
-  font-weight: 700;
-  font-style: italic;
-}
-
 #app,
 .dialog,
 input,

src/assets/styles/messages.css

@@ -4,3 +4,10 @@
   font-size: 13px;
   padding: 0 24px;
 }
+
+.data-view-warning {
+  height: 40px;
+  line-height: 40px;
+  border-bottom: 1px solid var(--color-border);
+  box-sizing: border-box;
+}

src/assets/styles/typography.css

@@ -0,0 +1,45 @@
+@font-face {
+  font-family: 'Open Sans';
+  src: url('@/assets/fonts/OpenSans-Regular.woff2');
+  font-weight: 400;
+  font-style: normal;
+}
+
+@font-face {
+  font-family: 'Open Sans';
+  src: url('@/assets/fonts/OpenSans-SemiBold.woff2');
+  font-weight: 600;
+  font-style: normal;
+}
+
+@font-face {
+  font-family: 'Open Sans';
+  src: url('@/assets/fonts/OpenSans-Bold.woff2');
+  font-weight: 700;
+  font-style: normal;
+}
+
+@font-face {
+  font-family: 'Open Sans';
+  src: url('@/assets/fonts/OpenSans-Italic.woff2');
+  font-weight: 400;
+  font-style: italic;
+}
+
+@font-face {
+  font-family: 'Open Sans';
+  src: url('@/assets/fonts/OpenSans-SemiBoldItalic.woff2');
+  font-weight: 600;
+  font-style: italic;
+}
+
+@font-face {
+  font-family: 'Open Sans';
+  src: url('@/assets/fonts/OpenSans-BoldItalic.woff2');
+  font-weight: 700;
+  font-style: italic;
+}
+
+a {
+  color: var(--color-accent-shade);
+}

src/components/Graph/AdvancedForceAtlasLayoutSettings.vue

@@ -1,5 +1,15 @@
 <template>
-  <Field label="Adjust sizes">
+  <Field label="Scaling ratio" fieldContainerClassName="test_fa2_scaling">
+    <NumericInput
+      :value="modelValue.scalingRatio"
+      @update="update('scalingRatio', $event)"
+    />
+  </Field>
+
+  <Field
+    label="Prevent overlapping"
+    fieldContainerClassName="test_fa2_adjustSizes"
+  >
     <RadioBlocks
       :options="booleanOptions"
       :activeOption="modelValue.adjustSizes"
@@ -7,7 +17,10 @@
     />
   </Field>
 
-  <Field label="Barnes-Hut optimize">
+  <Field
+    label="Barnes-Hut optimize"
+    fieldContainerClassName="test_fa2_barnes_hut"
+  >
     <RadioBlocks
       :options="booleanOptions"
       :activeOption="modelValue.barnesHutOptimize"
@@ -15,21 +28,21 @@
     />
   </Field>
 
-  <Field v-show="modelValue.barnesHutOptimize" label="Barnes-Hut Theta">
+  <Field
+    v-show="modelValue.barnesHutOptimize"
+    label="Barnes-Hut Theta"
+    fieldContainerClassName="test_fa2_barnes_theta"
+  >
     <NumericInput
       :value="modelValue.barnesHutTheta"
       @update="update('barnesHutTheta', $event)"
     />
   </Field>
 
-  <Field label="Gravity">
+  <Field
-    <NumericInput
+    label="Strong gravity mode"
-      :value="modelValue.gravity"
+    fieldContainerClassName="test_fa2_strong_gravity"
-      @update="update('gravity', $event)"
+  >
-    />
-  </Field>
-
-  <Field label="Strong gravity mode">
     <RadioBlocks
       :options="booleanOptions"
       :activeOption="modelValue.strongGravityMode"
@@ -37,7 +50,10 @@
     />
   </Field>
 
-  <Field label="Noack's LinLog model">
+  <Field
+    label="Noack's LinLog model"
+    fieldContainerClassName="test_fa2_lin_log"
+  >
     <RadioBlocks
       :options="booleanOptions"
       :activeOption="modelValue.linLogMode"
@@ -45,7 +61,10 @@
     />
   </Field>
 
-  <Field label="Out bound attraction distribution">
+  <Field
+    label="Outbound attraction distribution"
+    fieldContainerClassName="test_fa2_outbound_attraction"
+  >
     <RadioBlocks
       :options="booleanOptions"
       :activeOption="modelValue.outboundAttractionDistribution"
@@ -53,7 +72,7 @@
     />
   </Field>
 
-  <Field label="Slow down">
+  <Field label="Slow down" fieldContainerClassName="test_fa2_slow_down">
     <NumericInput
       :value="modelValue.slowDown"
       :min="0"
@@ -65,10 +84,15 @@
     <Dropdown
       :options="keyOptions"
       :value="modelValue.weightSource"
+      className="test_fa2_weight_source"
       @change="update('weightSource', $event)"
     />
   </Field>
-  <Field v-show="modelValue.weightSource" label="Edge weight influence">
+  <Field
+    v-show="modelValue.weightSource"
+    label="Edge weight influence"
+    fieldContainerClassName="test_fa2_weight_influence"
+  >
     <NumericInput
       :value="modelValue.edgeWeightInfluence"
       @update="update('edgeWeightInfluence', $event)"

src/components/Graph/CirclePackLayoutSettings.vue

@@ -40,7 +40,6 @@
 import { applyPureReactInVue } from 'veaury'
 import Field from 'react-chart-editor/lib/components/fields/Field'
 import NumericInput from 'react-chart-editor/lib/components/widgets/NumericInput'
-import Dropdown from 'react-chart-editor/lib/components/widgets/Dropdown'
 import Multiselect from 'vue-multiselect'
 import 'react-chart-editor/lib/react-chart-editor.css'
 
@@ -48,7 +47,6 @@ export default {
   components: {
     Field: applyPureReactInVue(Field),
     NumericInput: applyPureReactInVue(NumericInput),
-    Dropdown: applyPureReactInVue(Dropdown),
     Multiselect
   },
   props: {

src/components/Graph/EdgeColorSettings.vue

@@ -1,18 +1,21 @@
 <template>
-  <Field label="Color">
+  <Field label="Color" fieldContainerClassName="test_edge_color">
     <RadioBlocks
       :options="edgeColorTypeOptions"
       :activeOption="modelValue.type"
       @option-change="updateColorType"
     />
-    <Field v-if="modelValue.type === 'constant'">
+    <Field
+      v-if="modelValue.type === 'constant'"
+      fieldContainerClassName="test_edge_color_value"
+    >
       <ColorPicker
         :selectedColor="modelValue.value"
         @color-change="updateSettings('value', $event)"
       />
     </Field>
     <template v-else>
-      <Field>
+      <Field fieldContainerClassName="test_edge_color_value">
         <Dropdown
           v-if="modelValue.type === 'variable'"
           :options="keyOptions"
@@ -21,7 +24,7 @@
         />
       </Field>
 
-      <Field>
+      <Field fieldContainerClassName="test_edge_color_mapping_mode">
         <RadioBlocks
           :options="colorSourceUsageOptions"
           :activeOption="modelValue.sourceUsage"
@@ -39,7 +42,11 @@
     </template>
   </Field>
 
-  <Field v-if="modelValue.type !== 'constant'" label="Color as">
+  <Field
+    v-if="modelValue.type !== 'constant' && modelValue.sourceUsage === 'map_to'"
+    label="Color as"
+    fieldContainerClassName="test_edge_color_as"
+  >
     <RadioBlocks
       :options="сolorAsOptions"
       :activeOption="modelValue.mode"
@@ -47,7 +54,11 @@
     />
   </Field>
 
-  <Field v-if="modelValue.type !== 'constant'" label="Colorscale direction">
+  <Field
+    v-if="modelValue.type !== 'constant' && modelValue.sourceUsage === 'map_to'"
+    label="Colorscale direction"
+    fieldContainerClassName="test_edge_color_colorscale_direction"
+  >
     <RadioBlocks
       :options="сolorscaleDirections"
       :activeOption="modelValue.colorscaleDirection"

src/components/Graph/EdgeSizeSettings.vue

@@ -1,12 +1,12 @@
 <template>
-  <Field label="Size">
+  <Field label="Size" fieldContainerClassName="test_edge_size">
     <RadioBlocks
       :options="edgeSizeTypeOptions"
       :activeOption="modelValue.type"
       @option-change="updateSizeType"
     />
 
-    <Field>
+    <Field fieldContainerClassName="test_edge_size_value">
       <NumericInput
         v-if="modelValue.type === 'constant'"
         :value="modelValue.value"
@@ -23,14 +23,14 @@
   </Field>
 
   <template v-if="modelValue.type !== 'constant'">
-    <Field label="Size scale">
+    <Field label="Size scale" fieldContainerClassName="test_edge_size_scale">
       <NumericInput
         :value="modelValue.scale"
         @update="updateSettings('scale', $event)"
       />
     </Field>
 
-    <Field label="Minimum size">
+    <Field label="Minimum size" fieldContainerClassName="test_edge_size_min">
       <NumericInput
         :value="modelValue.min"
         @update="updateSettings('min', $event)"

src/components/Graph/ForceAtlasLayoutSettings.vue

@@ -1,5 +1,8 @@
 <template>
-  <Field label="Initial iterations">
+  <Field
+    label="Initial iterations"
+    fieldContainerClassName="test_fa2_iteration_amount"
+  >
     <NumericInput
       :value="modelValue.initialIterationsAmount"
       :min="1"
@@ -7,10 +10,10 @@
     />
   </Field>
 
-  <Field label="Scaling ratio">
+  <Field label="Gravity" fieldContainerClassName="test_fa2_gravity">
     <NumericInput
-      :value="modelValue.scalingRatio"
+      :value="modelValue.gravity"
-      @update="update('scalingRatio', $event)"
+      @update="update('gravity', $event)"
     />
   </Field>
 </template>

src/components/Graph/GraphEditor.vue

@@ -7,12 +7,15 @@
             <Field>
               Map your result set records to node and edge properties required
               to build a graph. Learn more about result set requirements in the
-              documentation.
+              <a href="https://sqliteviz.com/docs/graph/" target="_blank">
+                documentation</a
+              >.
             </Field>
-            <Field label="Object type">
+            <Field ref="objectTypeField" label="Object type">
               <Dropdown
                 :options="keysOptions"
                 :value="settings.structure.objectType"
+                className="test_object_type_select"
                 @change="updateStructure('objectType', $event)"
               />
               <Field>
@@ -25,6 +28,7 @@
               <Dropdown
                 :options="keysOptions"
                 :value="settings.structure.nodeId"
+                className="test_node_id_select"
                 @change="updateStructure('nodeId', $event)"
               />
               <Field> A field keeping unique node identifier. </Field>
@@ -34,6 +38,7 @@
               <Dropdown
                 :options="keysOptions"
                 :value="settings.structure.edgeSource"
+                className="test_edge_source_select"
                 @change="updateStructure('edgeSource', $event)"
               />
               <Field>
@@ -45,6 +50,7 @@
               <Dropdown
                 :options="keysOptions"
                 :value="settings.structure.edgeTarget"
+                className="test_edge_target_select"
                 @change="updateStructure('edgeTarget', $event)"
               />
               <Field>
@@ -69,6 +75,7 @@
               <Dropdown
                 :options="keysOptions"
                 :value="settings.style.nodes.label.source"
+                className="test_label_select"
                 @change="updateNodes('label.source', $event)"
               />
             </Field>
@@ -95,7 +102,10 @@
 
         <Panel group="Style" name="Edges">
           <Fold name="Edges">
-            <Field label="Direction">
+            <Field
+              label="Direction"
+              fieldContainerClassName="test_edge_direction"
+            >
               <RadioBlocks
                 :options="visibilityOptions"
                 :activeOption="settings.style.edges.showDirection"
@@ -107,6 +117,7 @@
               <Dropdown
                 :options="keysOptions"
                 :value="settings.style.edges.label.source"
+                className="test_edge_label_select"
                 @change="updateEdges('label.source', $event)"
               />
             </Field>
@@ -137,6 +148,8 @@
               <Dropdown
                 :options="layoutOptions"
                 :value="settings.layout.type"
+                :clearable="false"
+                className="test_layout_algorithm_select"
                 @change="updateLayout($event)"
               />
             </Field>
@@ -157,10 +170,18 @@
               />
             </Fold>
             <div class="force-atlas-buttons">
-              <Button variant="secondary" @click="resetFA2LayoutSettings">
+              <Button
+                variant="secondary"
+                class="test_fa2_reset"
+                @click="resetFA2LayoutSettings"
+              >
                 Reset
               </Button>
-              <Button variant="primary" @click="toggleFA2Layout">
+              <Button
+                variant="primary"
+                class="test_fa2_toggle"
+                @click="toggleFA2Layout"
+              >
                 <template #node:icon>
                   <div
                     :style="{
@@ -181,6 +202,7 @@
 
     <div
       ref="graph"
+      class="test_graph_output"
       :style="{
         height: '100%',
         width: '100%',
@@ -203,10 +225,11 @@ import Button from 'react-chart-editor/lib/components/widgets/Button'
 import Field from 'react-chart-editor/lib/components/fields/Field'
 import RandomLayoutSettings from '@/components/Graph/RandomLayoutSettings.vue'
 import ForceAtlasLayoutSettings from '@/components/Graph/ForceAtlasLayoutSettings.vue'
+// eslint-disable-next-line max-len
 import AdvancedForceAtlasLayoutSettings from '@/components/Graph/AdvancedForceAtlasLayoutSettings.vue'
 import CirclePackLayoutSettings from '@/components/Graph/CirclePackLayoutSettings.vue'
 import FA2Layout from 'graphology-layout-forceatlas2/worker'
-import forceAtlas2 from 'graphology-layout-forceatlas2'
+import * as forceAtlas2 from 'graphology-layout-forceatlas2'
 import RunIcon from '@/components/svg/run.vue'
 import StopIcon from '@/components/svg/stop.vue'
 import { downloadAsPNG, drawOnCanvas } from '@sigma/export-image'
@@ -224,6 +247,7 @@ import NodeColorSettings from '@/components/Graph/NodeColorSettings.vue'
 import NodeSizeSettings from '@/components/Graph/NodeSizeSettings.vue'
 import EdgeSizeSettings from '@/components/Graph/EdgeSizeSettings.vue'
 import EdgeColorSettings from '@/components/Graph/EdgeColorSettings.vue'
+import events from '@/lib/utils/events'
 
 export default {
   components: {
@@ -291,7 +315,7 @@ export default {
               nodes: {
                 size: {
                   type: 'constant',
-                  value: 4
+                  value: 10
                 },
                 color: {
                   type: 'constant',
@@ -335,11 +359,10 @@ export default {
       if (!this.dataSources) {
         return []
       }
+      const firstColumnName = Object.keys(this.dataSources)[0]
       try {
         return (
-          this.dataSources[Object.keys(this.dataSources)[0] || 'doc'].map(
+          this.dataSources[firstColumnName].map(json => JSON.parse(json)) || []
-            json => JSON.parse(json)
-          ) || []
         )
       } catch {
         return []
@@ -375,6 +398,14 @@ export default {
         this.buildGraph()
       }
     },
+    'settings.layout.type': {
+      immediate: true,
+      handler() {
+        events.send('viz_graph.render', null, {
+          layout: this.settings.layout.type
+        })
+      }
+    },
     tabLayout: {
       deep: true,
       handler() {
@@ -406,9 +437,7 @@ export default {
       this.updateLayout(this.settings.layout.type)
       this.renderer = new Sigma(this.graph, this.$refs.graph, {
         renderEdgeLabels: true,
-        allowInvalidContainer: true,
+        allowInvalidContainer: true
-        labelColor: { attribute: 'labelColor', color: '#444444' },
-        edgeLabelColor: { attribute: 'labelColor', color: '#a2b1c6' }
       })
       if (this.settings.layout.type === 'forceAtlas2') {
         this.autoRunFA2Layout()
@@ -480,7 +509,7 @@ export default {
 
       if (layoutType === 'random') {
         random.assign(this.graph, {
-          rng: seedrandom(this.settings.layout.options.seedValue || 1)
+          rng: seedrandom(this.settings.layout.options.seedValue)
         })
         return
       }
@@ -513,7 +542,7 @@ export default {
             this.settings.layout.options.hierarchyAttributes?.map(
               (_, index) => 'hierarchyAttribute' + index
             ) || [],
-          rng: seedrandom(this.settings.layout.options.seedValue || 1)
+          rng: seedrandom(this.settings.layout.options.seedValue)
         })
         return
       }
@@ -563,10 +592,6 @@ export default {
       }
     },
     autoRunFA2Layout() {
-      if (this.fa2Layout.isRunning()) {
-        this.stopFA2Layout()
-      }
-
       let iteration = 1
       this.checkIteration = () => {
         if (
@@ -581,7 +606,7 @@ export default {
       this.fa2Layout.start()
     },
     setRecommendedFA2Settings() {
-      const sensibleSettings = forceAtlas2.inferSettings(this.graph)
+      const sensibleSettings = forceAtlas2.default.inferSettings(this.graph)
       this.settings.layout.options = {
         initialIterationsAmount: 50,
         adjustSizes: false,

src/components/Graph/NodeColorSettings.vue

@@ -1,18 +1,21 @@
 <template>
-  <Field label="Color">
+  <Field label="Color" fieldContainerClassName="test_node_color">
     <RadioBlocks
       :options="nodeColorTypeOptions"
       :activeOption="modelValue.type"
       @option-change="updateColorType"
     />
-    <Field v-if="modelValue.type === 'constant'">
+    <Field
+      v-if="modelValue.type === 'constant'"
+      fieldContainerClassName="test_node_color_value"
+    >
       <ColorPicker
         :selectedColor="modelValue.value"
         @color-change="updateSettings('value', $event)"
       />
     </Field>
     <template v-else>
-      <Field>
+      <Field fieldContainerClassName="test_node_color_value">
         <Dropdown
           v-if="modelValue.type === 'variable'"
           :options="keyOptions"
@@ -23,11 +26,15 @@
           v-if="modelValue.type === 'calculated'"
           :options="nodeCalculatedColorMethodOptions"
           :value="modelValue.method"
+          :clearable="false"
           @change="updateSettings('method', $event)"
         />
       </Field>
 
-      <Field>
+      <Field
+        v-if="modelValue.type === 'variable'"
+        fieldContainerClassName="test_node_color_mapping_mode"
+      >
         <RadioBlocks
           :options="colorSourceUsageOptions"
           :activeOption="modelValue.sourceUsage"
@@ -35,7 +42,12 @@
         />
       </Field>
 
-      <Field v-if="modelValue.sourceUsage === 'map_to'">
+      <Field
+        v-if="
+          modelValue.sourceUsage === 'map_to' ||
+          modelValue.type === 'calculated'
+        "
+      >
         <ColorscalePicker
           :selected="modelValue.colorscale"
           className="colorscale-picker"
@@ -45,7 +57,13 @@
     </template>
   </Field>
 
-  <Field v-if="modelValue.type !== 'constant'" label="Color as">
+  <Field
+    v-if="
+      modelValue.sourceUsage === 'map_to' || modelValue.type === 'calculated'
+    "
+    label="Color as"
+    fieldContainerClassName="test_node_color_as"
+  >
     <RadioBlocks
       :options="сolorAsOptions"
       :activeOption="modelValue.mode"
@@ -53,7 +71,13 @@
     />
   </Field>
 
-  <Field v-if="modelValue.type !== 'constant'" label="Colorscale direction">
+  <Field
+    v-if="
+      modelValue.sourceUsage === 'map_to' || modelValue.type === 'calculated'
+    "
+    label="Colorscale direction"
+    fieldContainerClassName="test_node_color_colorscale_direction"
+  >
     <RadioBlocks
       :options="сolorscaleDirections"
       :activeOption="modelValue.colorscaleDirection"
@@ -120,7 +144,6 @@ export default {
         },
         calculated: {
           method: 'degree',
-          sourceUsage: 'map_to',
           colorscale: null,
           mode: 'continious',
           colorscaleDirection: 'normal'

src/components/Graph/NodeSizeSettings.vue

@@ -1,16 +1,17 @@
 <template>
-  <Field label="Size">
+  <Field label="Size" fieldContainerClassName="test_node_size">
     <RadioBlocks
       :options="nodeSizeTypeOptions"
       :activeOption="modelValue.type"
       @option-change="updateSizeType"
     />
 
-    <Field>
+    <Field fieldContainerClassName="test_node_size_value">
       <NumericInput
         v-if="modelValue.type === 'constant'"
         :value="modelValue.value"
         :min="1"
+        class="test_node_size_value"
         @update="updateSettings('value', $event)"
       />
       <Dropdown
@@ -23,20 +24,21 @@
         v-if="modelValue.type === 'calculated'"
         :options="nodeCalculatedSizeMethodOptions"
         :value="modelValue.method"
+        :clearable="false"
         @change="updateSettings('method', $event)"
       />
     </Field>
   </Field>
 
   <template v-if="modelValue.type !== 'constant'">
-    <Field label="Size scale">
+    <Field label="Size scale" fieldContainerClassName="test_node_size_scale">
       <NumericInput
         :value="modelValue.scale"
         @update="updateSettings('scale', $event)"
       />
     </Field>
 
-    <Field label="Size mode">
+    <Field label="Size mode" fieldContainerClassName="test_node_size_mode">
       <RadioBlocks
         :options="nodeSizeModeOptions"
         :activeOption="modelValue.mode"
@@ -44,7 +46,7 @@
       />
     </Field>
 
-    <Field label="Minimum size">
+    <Field label="Minimum size" fieldContainerClassName="test_node_size_min">
       <NumericInput
         :value="modelValue.min"
         @update="updateSettings('min', $event)"

src/components/svg/graph.vue

@@ -7,27 +7,33 @@
     xmlns="http://www.w3.org/2000/svg"
   >
     <path
-      d="M5 4C5 5.10457 4.10457 6 3 6C1.89543 6 1 5.10457 1 4C1 2.89543 1.89543 2 3 2C4.10457 2 5 2.89543 5 4Z"
+      d="M5 4C5 5.10457 4.10457 6 3 6C1.89543 6 1 5.10457 1 4C1 2.89543 
+      1.89543 2 3 2C4.10457 2 5 2.89543 5 4Z"
       fill="#A2B1C6"
     />
     <path
-      d="M17 7.5C17 8.88071 15.8807 10 14.5 10C13.1193 10 12 8.88071 12 7.5C12 6.11929 13.1193 5 14.5 5C15.8807 5 17 6.11929 17 7.5Z"
+      d="M17 7.5C17 8.88071 15.8807 10 14.5 10C13.1193 10 12 8.88071 12 
+      7.5C12 6.11929 13.1193 5 14.5 5C15.8807 5 17 6.11929 17 7.5Z"
       fill="#A2B1C6"
     />
     <path
-      d="M8 13.5C8 14.8807 6.88071 16 5.5 16C4.11929 16 3 14.8807 3 13.5C3 12.1193 4.11929 11 5.5 11C6.88071 11 8 12.1193 8 13.5Z"
+      d="M8 13.5C8 14.8807 6.88071 16 5.5 16C4.11929 16 3 14.8807 3 13.5C3 
+      12.1193 4.11929 11 5.5 11C6.88071 11 8 12.1193 8 13.5Z"
       fill="#A2B1C6"
     />
     <path
-      d="M2.93128 5.31436L3.90527 5.08778L5.48693 11.8867L4.51294 12.1133L2.93128 5.31436Z"
+      d="M2.93128 5.31436L3.90527 5.08778L5.48693 11.8867L4.51294 
+      12.1133L2.93128 5.31436Z"
       fill="#A2B1C6"
     />
     <path
-      d="M12.9447 7.79159L13.5548 8.58392L7.30516 13.3962L6.69507 12.6038L12.9447 7.79159Z"
+      d="M12.9447 7.79159L13.5548 8.58392L7.30516 13.3962L6.69507 
+      12.6038L12.9447 7.79159Z"
       fill="#A2B1C6"
     />
     <path
-      d="M14.1316 6.51712L3.13166 3.51723L2.86844 4.48202L13.8684 7.48191L14.1316 6.51712Z"
+      d="M14.1316 6.51712L3.13166 3.51723L2.86844 4.48202L13.8684 
+      7.48191L14.1316 6.51712Z"
       fill="#A2B1C6"
     />
   </svg>

src/components/svg/stop.vue

@@ -7,7 +7,8 @@
     xmlns="http://www.w3.org/2000/svg"
   >
     <path
-      d="M3 4C3 3.44772 3.44772 3 4 3H14C14.5523 3 15 3.44772 15 4V14C15 14.5523 14.5523 15 14 15H4C3.44772 15 3 14.5523 3 14V4Z"
+      d="M3 4C3 3.44772 3.44772 3 4 3H14C14.5523 3 15 3.44772 15 4V14C15 
+      14.5523 14.5523 15 14 15H4C3.44772 15 3 14.5523 3 14V4Z"
       fill="#A2B1C6"
     />
   </svg>

src/lib/graphHelper.js

@@ -5,8 +5,39 @@ const TYPE_NODE = 0
 const TYPE_EDGE = 1
 const DEFAULT_SCALE = COLOR_PICKER_CONSTANTS.DEFAULT_SCALE
 
+export function dataSourceIsValid(dataSources) {
+  const docColumn = Object.keys(dataSources)[0]
+  if (!docColumn) {
+    return false
+  }
+  try {
+    const records = dataSources[docColumn].slice(0, 10)
+    records.forEach(record => {
+      const parsedRec = JSON.parse(record)
+      if (Object.keys(parsedRec).length < 2) {
+        throw new Error('The records must have at least 2 keys')
+      }
+    })
+    const firstRecord = JSON.parse(records[0])
+    if (
+      !Object.keys(firstRecord).some(key => {
+        return records
+          .map(record => JSON.parse(record)[key])
+          .every(value => value === 0 || value === 1)
+      })
+    ) {
+      throw new Error(
+        'There must be a common key used as object type: 0 - node, 1 - edge'
+      )
+    }
+    return true
+  } catch (err) {
+    return false
+  }
+}
+
 export function buildNodes(graph, dataSources, options) {
-  const docColumn = Object.keys(dataSources)[0] || 'doc'
+  const docColumn = Object.keys(dataSources)[0]
   const { objectType, nodeId } = options.structure
 
   if (objectType && nodeId) {
@@ -14,16 +45,17 @@ export function buildNodes(graph, dataSources, options) {
       .map(json => JSON.parse(json))
       .filter(item => item[objectType] === TYPE_NODE)
     nodes.forEach(node => {
-      graph.addNode(node[nodeId], {
+      if (node[nodeId]) {
-        data: node,
+        graph.addNode(node[nodeId], {
-        labelColor: options.style.nodes.label.color
+          data: node
-      })
+        })
+      }
     })
   }
 }
 
 export function buildEdges(graph, dataSources, options) {
-  const docColumn = Object.keys(dataSources)[0] || 'doc'
+  const docColumn = Object.keys(dataSources)[0]
   const { objectType, edgeSource, edgeTarget } = options.structure
 
   if (objectType && edgeSource && edgeTarget) {
@@ -36,8 +68,7 @@ export function buildEdges(graph, dataSources, options) {
       const target = edge[edgeTarget]
       if (graph.hasNode(source) && graph.hasNode(target)) {
         graph.addEdge(source, target, {
-          data: edge,
+          data: edge
-          labelColor: options.style.edges.label.color
         })
       }
     })
@@ -110,10 +141,23 @@ function getUpdateSizeMethod(graph, sizeSettings) {
   if (type === 'constant') {
     return attributes => (attributes.size = value)
   } else if (type === 'variable') {
-    return getVariabledSizeMethod(mode, source, scale, min)
+    return attributes => {
+      attributes.size = getVariabledSize(
+        mode,
+        attributes.data[source],
+        scale,
+        min
+      )
+    }
   } else {
-    return (attributes, nodeId) =>
+    return (attributes, nodeId) => {
-      (attributes.size = Math.max(graph[method](nodeId) * scale, min))
+      attributes.size = getVariabledSize(
+        mode,
+        graph[method](nodeId),
+        scale,
+        min
+      )
+    }
   }
 }
 
@@ -184,22 +228,13 @@ function getUpdateEdgeColorMethod(graph, colorSettings) {
   }
 }
 
-function getVariabledSizeMethod(mode, source, scale, min) {
+function getVariabledSize(mode, value, scale, min) {
   if (mode === 'diameter') {
-    return attributes =>
+    return Math.max((value / 2) * scale, min / 2)
-      (attributes.size = Math.max(
-        (attributes.data[source] / 2) * scale,
-        min / 2
-      ))
   } else if (mode === 'area') {
-    return attributes =>
+    return Math.max(Math.sqrt((value / 2) * scale), min / 2)
-      (attributes.size = Math.max(
-        Math.sqrt((attributes.data[source] / 2) * scale),
-        min / 2
-      ))
   } else {
-    return attributes =>
+    return Math.max(value * scale, min)
-      (attributes.size = Math.max(attributes.data[source] * scale, min))
   }
 }
 
@@ -224,7 +259,6 @@ function getColorMethod(
         colorscale[index % colorscale.length]
       ])
     )
-
     return (attributes, nodeId) => {
       const category = sourceGetter(nodeId, attributes)
       attributes.color = colorMap[category]
@@ -240,6 +274,7 @@ function getColorMethod(
       const value = sourceGetter(nodeId, attributes)
       const normalizedValue = (value - min) / (max - min)
       if (isNaN(normalizedValue)) {
+        attributes.color = '#000000'
         return
       }
       const exactMatch = normalizedColorscale.find(
@@ -251,9 +286,9 @@ function getColorMethod(
       }
 
       const rightColorIndex = normalizedColorscale.findIndex(
-        ([value]) => value >= normalizedValue
+        ([value]) => value > normalizedValue
       )
-      const leftColorIndex = (rightColorIndex || 1) - 1
+      const leftColorIndex = rightColorIndex - 1
       const right = normalizedColorscale[rightColorIndex]
       const left = normalizedColorscale[leftColorIndex]
       const interpolationFactor =
@@ -290,18 +325,3 @@ function getEdgeValueScale(graph, sourceGetter) {
   }, new Set())
   return Array.from(scaleSet).sort((a, b) => a - b)
 }
-
-export function getOptionsFromDataSources(dataSources) {
-  if (!dataSources) {
-    return []
-  }
-
-  return Object.keys(dataSources).map(name => ({
-    value: name,
-    label: name
-  }))
-}
-
-export default {
-  getOptionsFromDataSources
-}

src/main.js

@@ -5,6 +5,7 @@ import store from '@/store'
 import { createVfm, VueFinalModal, useVfm } from 'vue-final-modal'
 
 import '@/assets/styles/variables.css'
+import '@/assets/styles/typography.css'
 import '@/assets/styles/buttons.css'
 import '@/assets/styles/tables.css'
 import '@/assets/styles/dialogs.css'

src/views/MainView/Workspace/Tabs/Tab/DataView/Chart/index.vue

@@ -1,6 +1,6 @@
 <template>
   <div ref="chartContainer" class="chart-container">
-    <div v-show="!dataSources" class="warning chart-warning">
+    <div v-show="!dataSources" class="warning data-view-warning">
       There is no data to build a chart. Run your SQL query and make sure the
       result is not empty.
     </div>
@@ -120,8 +120,8 @@ export default {
     this.resizeObserver.observe(this.$refs.chartContainer)
     if (this.dataSources) {
       dereference.default(this.state.data, this.dataSources)
-      this.updatePlotly()
     }
+    this.handleResize()
   },
   activated() {
     this.useResizeHandler = true
@@ -134,6 +134,10 @@ export default {
   },
   methods: {
     async handleResize() {
+      // Call updatePlotly twice because there is a small gap (for scrolling?)
+      //  on right and bottom of the plot.
+      // After the second call it's good.
+      this.updatePlotly()
       this.updatePlotly()
     },
     onRender() {
@@ -184,13 +188,6 @@ export default {
   height: 100%;
 }
 
-.chart-warning {
-  height: 40px;
-  line-height: 40px;
-  border-bottom: 1px solid var(--color-border);
-  box-sizing: border-box;
-}
-
 .chart {
   min-height: 242px;
 }

src/views/MainView/Workspace/Tabs/Tab/DataView/Graph/index.vue

@@ -1,13 +1,23 @@
 <template>
   <div ref="graphContainer" class="graph-container">
-    <div v-show="!dataSources" class="warning chart-warning">
+    <div v-show="!dataSources" class="warning data-view-warning no-data">
       There is no data to build a graph. Run your SQL query and make sure the
       result is not empty.
     </div>
+    <div
+      v-show="!dataSourceIsValid"
+      class="warning data-view-warning invalid-data"
+    >
+      Result set is invalid for graph visualisation. Learn more in
+      <a href="https://sqliteviz.com/docs/graph/" target="_blank">
+        documentation</a
+      >.
+    </div>
     <div
       class="graph"
       :style="{
-        height: !dataSources ? 'calc(100% - 40px)' : '100%'
+        height:
+          !dataSources || !dataSourceIsValid ? 'calc(100% - 40px)' : '100%'
       }"
     >
       <GraphEditor
@@ -23,8 +33,8 @@
 
 <script>
 import 'react-chart-editor/lib/react-chart-editor.css'
-import events from '@/lib/utils/events'
+import GraphEditor from '@/components/Graph/GraphEditor.vue'
-import GraphEditor from './GraphEditor.vue'
+import { dataSourceIsValid } from '@/lib/graphHelper'
 
 export default {
   name: 'Graph',
@@ -40,6 +50,8 @@ export default {
   emits: [
     'update:exportToSvgEnabled',
     'update:exportToHtmlEnabled',
+    'update:exportToPngEnabled',
+    'update:exportToClipboardEnabled',
     'update',
     'loadingImageCompleted'
   ],
@@ -48,10 +60,26 @@ export default {
       resizeObserver: null
     }
   },
-
+  computed: {
+    dataSourceIsValid() {
+      return !this.dataSources || dataSourceIsValid(this.dataSources)
+    }
+  },
+  watch: {
+    async showViewSettings() {
+      await this.$nextTick()
+      this.handleResize()
+    },
+    dataSources() {
+      this.$emit('update:exportToPngEnabled', !!this.dataSources)
+      this.$emit('update:exportToClipboardEnabled', !!this.dataSources)
+    }
+  },
   created() {
     this.$emit('update:exportToSvgEnabled', false)
     this.$emit('update:exportToHtmlEnabled', false)
+    this.$emit('update:exportToPngEnabled', !!this.dataSources)
+    this.$emit('update:exportToClipboardEnabled', !!this.dataSources)
   },
   mounted() {
     this.resizeObserver = new ResizeObserver(this.handleResize)
@@ -60,12 +88,6 @@ export default {
   beforeUnmount() {
     this.resizeObserver.unobserve(this.$refs.graphContainer)
   },
-  watch: {
-    async showViewSettings() {
-      await this.$nextTick()
-      this.handleResize()
-    }
-  },
   methods: {
     getOptionsForSave() {
       return this.$refs.graphEditor.settings
@@ -74,8 +96,8 @@ export default {
       await this.$refs.graphEditor.saveAsPng()
       this.$emit('loadingImageCompleted')
     },
-    async prepareCopy() {
+    prepareCopy() {
-      return await this.$refs.graphEditor.prepareCopy()
+      return this.$refs.graphEditor.prepareCopy()
     },
     async handleResize() {
       const renderer = this.$refs.graphEditor.renderer
@@ -93,13 +115,6 @@ export default {
   height: 100%;
 }
 
-.chart-warning {
-  height: 40px;
-  line-height: 40px;
-  border-bottom: 1px solid var(--color-border);
-  box-sizing: border-box;
-}
-
 .graph {
   min-height: 242px;
 }

src/views/MainView/Workspace/Tabs/Tab/DataView/Pivot/index.vue

@@ -31,7 +31,7 @@ import fIo from '@/lib/utils/fileIo'
 import $ from 'jquery'
 import 'pivottable'
 import 'pivottable/dist/pivot.css'
-import PivotUi from './PivotUi'
+import PivotUi from './PivotUi/index.vue'
 import pivotHelper from './pivotHelper'
 import Chart from '@/views/MainView/Workspace/Tabs/Tab/DataView/Chart'
 import chartHelper from '@/lib/chartHelper'
@@ -227,12 +227,12 @@ export default {
 
     async prepareCopy() {
       if (this.viewCustomChart) {
-        return await this.$refs.customChart.prepareCopy()
+        return this.$refs.customChart.prepareCopy()
       }
       if (this.viewStandartChart) {
-        return await chartHelper.getImageDataUrl(this.$refs.pivotOutput, 'png')
+        return chartHelper.getImageDataUrl(this.$refs.pivotOutput, 'png')
       }
-      return await pivotHelper.getPivotCanvas(this.$refs.pivotOutput)
+      return pivotHelper.getPivotCanvas(this.$refs.pivotOutput)
     },
 
     async saveAsSvg() {
@@ -326,4 +326,8 @@ export default {
 .pivot-output:empty {
   flex-grow: 0;
 }
+
+:deep(.js-plotly-plot) {
+  height: 100%;
+}
 </style>

src/views/MainView/Workspace/Tabs/Tab/DataView/index.vue

@@ -7,6 +7,7 @@
         v-model:exportToPngEnabled="exportToPngEnabled"
         v-model:exportToSvgEnabled="exportToSvgEnabled"
         v-model:exportToHtmlEnabled="exportToHtmlEnabled"
+        v-model:exportToClipboardEnabled="exportToClipboardEnabled"
         :initOptions="initOptionsByMode[mode]"
         :data-sources="dataSource"
         :showViewSettings="showViewSettings"
@@ -16,6 +17,7 @@
     </div>
     <side-tool-bar panel="dataView" @switch-to="$emit('switchTo', $event)">
       <icon-button
+        ref="chartBtn"
         :active="mode === 'chart'"
         tooltip="Switch to chart"
         tooltipPosition="top-left"
@@ -33,6 +35,7 @@
         <pivot-icon />
       </icon-button>
       <icon-button
+        ref="graphBtn"
         :active="mode === 'graph'"
         tooltip="Switch to graph"
         tooltipPosition="top-left"
@@ -56,6 +59,7 @@
       <div class="side-tool-bar-divider" />
 
       <icon-button
+        ref="pngExportBtn"
         :disabled="!exportToPngEnabled || loadingImage"
         :loading="loadingImage"
         tooltip="Save as PNG image"
@@ -85,6 +89,7 @@
       </icon-button>
       <icon-button
         ref="copyToClipboardBtn"
+        :disabled="!exportToClipboardEnabled"
         :loading="copyingImage"
         tooltip="Copy visualisation to clipboard"
         tooltipPosition="top-left"
@@ -156,6 +161,7 @@ export default {
       exportToPngEnabled: true,
       exportToSvgEnabled: true,
       exportToHtmlEnabled: true,
+      exportToClipboardEnabled: true,
       loadingImage: false,
       copyingImage: false,
       preparingCopy: false,
@@ -178,6 +184,7 @@ export default {
     mode(newMode, oldMode) {
       this.$emit('update')
       this.exportToPngEnabled = true
+      this.exportToClipboardEnabled = true
       this.initOptionsByMode[oldMode] = this.getOptionsForSave()
     }
   },
@@ -254,7 +261,9 @@ export default {
       events.send(
         this.mode === 'chart' || this.plotlyInPivot
           ? 'viz_plotly.export'
-          : 'viz_pivot.export',
+          : this.mode === 'graph'
+            ? 'viz_graph.export'
+            : 'viz_pivot.export',
         null,
         eventLabels
       )

src/views/MainView/Workspace/index.vue

@@ -42,8 +42,8 @@ export default {
     ) {
       const stmt = [
         '/*',
-        ' * Your database is empty. In order to start building charts',
+        ' * Your database is empty. In order to start building data visualisations',
-        ' * you should create a table and insert data into it.',
+        ' * you should create tables and insert data into them.',
         ' */',
         'CREATE TABLE house',
         '(',
@@ -54,7 +54,20 @@ export default {
         "('Gryffindor', 100),",
         "('Hufflepuff', 90),",
         "('Ravenclaw', 95),",
-        "('Slytherin', 80);"
+        "('Slytherin', 80);",
+        '',
+        'CREATE TABLE student',
+        '(',
+        '  id INTEGER,',
+        '  name TEXT,',
+        '  house TEXT',
+        ');',
+        'INSERT INTO student VALUES',
+        "(1, 'Harry Potter', 'Gryffindor'),",
+        "(2, 'Ron Weasley', 'Gryffindor'),",
+        "(3, 'Draco Malfoy', 'Slytherin'),",
+        "(4, 'Luna Lovegood', 'Ravenclaw'),",
+        "(5, 'Cedric Diggory', 'Hufflepuff');"
       ].join('\n')
 
       const tabId = await this.$store.dispatch('addTab', { query: stmt })

tests/testUtils.js

@@ -0,0 +1,20 @@
+export function waitCondition(condition, timeoutMs = 5000) {
+  return new Promise((resolve, reject) => {
+    if (condition()) {
+      resolve()
+      return
+    }
+    const start = new Date().getTime()
+    const interval = setInterval(() => {
+      if (condition()) {
+        clearInterval(interval)
+        resolve()
+      } else {
+        if (new Date().getTime() - start > timeoutMs) {
+          clearInterval(interval)
+          reject()
+        }
+      }
+    }, 500)
+  })
+}

tests/views/MainView/Workspace/Tabs/Tab/DataView/Chart/Chart.spec.js

@@ -15,7 +15,6 @@ describe('Chart.vue', () => {
   })
 
   it('getOptionsForSave called with proper arguments', () => {
-    // mount the component
     const wrapper = mount(Chart, {
       global: {
         mocks: { $store }
@@ -30,7 +29,6 @@ describe('Chart.vue', () => {
   })
 
   it('emits update when plotly updates', async () => {
-    // mount the component
     const wrapper = mount(Chart, {
       global: {
         mocks: { $store }
@@ -48,7 +46,6 @@ describe('Chart.vue', () => {
       points: [80]
     }
 
-    // mount the component
     const wrapper = mount(Chart, {
       props: {
         dataSources,
@@ -187,7 +184,8 @@ describe('Chart.vue', () => {
     const wrapper = mount(Chart, {
       attachTo: document.body,
       props: {
-        dataSources
+        dataSources,
+        showViewSettings: true
       },
       global: {
         mocks: { $store }
@@ -207,4 +205,41 @@ describe('Chart.vue', () => {
     expect(wrapper.find('.Select__menu').text()).to.contain('name' + 'points')
     wrapper.unmount()
   })
+
+  it('hides and shows controls depending on showViewSettings and resizes the plot', async () => {
+    const wrapper = mount(Chart, {
+      attachTo: document.body,
+      props: {
+        dataSources: null,
+        showViewSettings: false
+      },
+      global: {
+        mocks: { $store }
+      }
+    })
+
+    // don't call flushPromises here, otherwize resize observer will be call to often
+    // which causes ResizeObserver loop completed with undelivered notifications.
+    await nextTick()
+
+    const plot = wrapper.find('.svg-container').wrapperElement
+    await flushPromises()
+    const initialPlotWidth = plot.scrollWidth
+    const initialPlotHeight = plot.scrollHeight
+
+    expect(wrapper.find('.plotly_editor .editor_controls').exists()).to.equal(
+      false
+    )
+
+    await wrapper.setProps({ showViewSettings: true })
+
+    await flushPromises()
+
+    expect(plot.scrollWidth).not.to.equal(initialPlotWidth)
+    expect(plot.scrollHeight).to.equal(initialPlotHeight)
+    expect(wrapper.find('.plotly_editor .editor_controls').exists()).to.equal(
+      true
+    )
+    wrapper.unmount()
+  })
 })

tests/views/MainView/Workspace/Tabs/Tab/DataView/DataView.spec.js

@@ -1,6 +1,6 @@
 import { expect } from 'chai'
 import { mount } from '@vue/test-utils'
-import DataView from '@/views/MainView/Workspace/Tabs/Tab/DataView'
+import DataView from '@/views/MainView/Workspace/Tabs/Tab/DataView/index.vue'
 import sinon from 'sinon'
 import { nextTick } from 'vue'
 import cIo from '@/lib/utils/clipboardIo'
@@ -15,7 +15,7 @@ describe('DataView.vue', () => {
   it('emits update on mode changing', async () => {
     const wrapper = mount(DataView, {
       global: {
-        stubs: { chart: true }
+        mocks: { $store }
       }
     })
 
@@ -29,7 +29,10 @@ describe('DataView.vue', () => {
   it('method getOptionsForSave calls the same method of the current view component', async () => {
     const wrapper = mount(DataView, {
       global: {
-        mocks: { $store }
+        mocks: { $store },
+        provide: {
+          tabLayout: { dataView: 'above' }
+        }
       }
     })
 
@@ -53,13 +56,28 @@ describe('DataView.vue', () => {
     expect(wrapper.vm.getOptionsForSave()).to.eql({
       here_are: 'pivot_settings'
     })
+
+    const graphBtn = wrapper.findComponent({ ref: 'graphBtn' })
+    await graphBtn.trigger('click')
+
+    const graph = wrapper.findComponent({ name: 'graph' }).vm
+    sinon
+      .stub(graph, 'getOptionsForSave')
+      .returns({ here_are: 'graph_settings' })
+
+    expect(wrapper.vm.getOptionsForSave()).to.eql({
+      here_are: 'graph_settings'
+    })
     wrapper.unmount()
   })
 
   it('method saveAsSvg calls the same method of the current view component', async () => {
     const wrapper = mount(DataView, {
       global: {
-        mocks: { $store }
+        mocks: { $store },
+        provide: {
+          tabLayout: { dataView: 'above' }
+        }
       }
     })
 
@@ -87,13 +105,22 @@ describe('DataView.vue', () => {
     // Export to svg
     await svgBtn.trigger('click')
     expect(pivot.saveAsSvg.calledOnce).to.equal(true)
+
+    // Switch to graph - svg disabled
+    const graphBtn = wrapper.findComponent({ ref: 'graphBtn' })
+    await graphBtn.trigger('click')
+    expect(svgBtn.attributes('disabled')).to.not.equal(undefined)
+
     wrapper.unmount()
   })
 
   it('method saveAsHtml calls the same method of the current view component', async () => {
     const wrapper = mount(DataView, {
       global: {
-        mocks: { $store }
+        mocks: { $store },
+        provide: {
+          tabLayout: { dataView: 'above' }
+        }
       }
     })
 
@@ -114,9 +141,76 @@ describe('DataView.vue', () => {
     const pivot = wrapper.findComponent({ name: 'pivot' }).vm
     sinon.spy(pivot, 'saveAsHtml')
 
-    // Export to svg
+    // Export to html
     await htmlBtn.trigger('click')
     expect(pivot.saveAsHtml.calledOnce).to.equal(true)
+
+    // Switch to graph - htmlBtn disabled
+    const graphBtn = wrapper.findComponent({ ref: 'graphBtn' })
+    await graphBtn.trigger('click')
+    expect(htmlBtn.attributes('disabled')).to.not.equal(undefined)
+
+    wrapper.unmount()
+  })
+
+  it('method saveAsPng calls the same method of the current view component', async () => {
+    const clock = sinon.useFakeTimers()
+    const wrapper = mount(DataView, {
+      global: {
+        mocks: { $store },
+        provide: {
+          tabLayout: { dataView: 'above' }
+        }
+      }
+    })
+
+    // Find chart and stub the method
+    const chart = wrapper.findComponent({ name: 'Chart' }).vm
+    sinon.stub(chart, 'saveAsPng').callsFake(() => {
+      chart.$emit('loadingImageCompleted')
+    })
+
+    // Export to png
+    const pngBtn = wrapper.findComponent({ ref: 'pngExportBtn' })
+    await pngBtn.trigger('click')
+    await clock.tick(0)
+    expect(chart.saveAsPng.calledOnce).to.equal(true)
+
+    // Switch to pivot
+    const pivotBtn = wrapper.findComponent({ ref: 'pivotBtn' })
+    await pivotBtn.trigger('click')
+
+    // Find pivot and stub the method
+    const pivot = wrapper.findComponent({ name: 'pivot' }).vm
+    sinon.stub(pivot, 'saveAsPng').callsFake(() => {
+      pivot.$emit('loadingImageCompleted')
+    })
+
+    // Export to png
+    await pngBtn.trigger('click')
+    await clock.tick(0)
+    expect(pivot.saveAsPng.calledOnce).to.equal(true)
+
+    // Switch to graph
+    const graphBtn = wrapper.findComponent({ ref: 'graphBtn' })
+    await graphBtn.trigger('click')
+
+    // Save as png is disabled because there is no data
+    expect(pngBtn.attributes('disabled')).to.not.equal(undefined)
+
+    await wrapper.setProps({ dataSource: { doc: [] } })
+
+    // Find graph and stub the method
+    const graph = wrapper.findComponent({ name: 'graph' }).vm
+    sinon.stub(graph, 'saveAsPng').callsFake(() => {
+      graph.$emit('loadingImageCompleted')
+    })
+
+    // Export to png
+    await pngBtn.trigger('click')
+    await clock.tick(0)
+    expect(graph.saveAsPng.calledOnce).to.equal(true)
+
     wrapper.unmount()
   })
 
@@ -276,4 +370,52 @@ describe('DataView.vue', () => {
     expect(wrapper.vm.copyToClipboard.calledOnce).to.equal(false)
     wrapper.unmount()
   })
+
+  it('saves visualisation options and restores them when switch between modes', async () => {
+    const wrapper = mount(DataView, {
+      props: {
+        initMode: 'graph',
+        initOptions: { test_options: 'graph_options_from_inquiery' }
+      },
+      global: {
+        mocks: { $store },
+        stubs: {
+          chart: true,
+          graph: true,
+          pivot: true
+        }
+      }
+    })
+    const getOptionsForSaveStub = sinon.stub(wrapper.vm, 'getOptionsForSave')
+
+    expect(
+      wrapper.findComponent({ name: 'graph' }).props('initOptions')
+    ).to.eql({ test_options: 'graph_options_from_inquiery' })
+
+    getOptionsForSaveStub.returns({ test_options: 'latest_graph_options' })
+    const chartBtn = wrapper.findComponent({ ref: 'chartBtn' })
+    await chartBtn.trigger('click')
+
+    getOptionsForSaveStub.returns({ test_options: 'chart_settings' })
+
+    const pivotBtn = wrapper.findComponent({ ref: 'pivotBtn' })
+    await pivotBtn.trigger('click')
+
+    getOptionsForSaveStub.returns({ test_options: 'pivot_settings' })
+    await chartBtn.trigger('click')
+    expect(
+      wrapper.findComponent({ name: 'chart' }).props('initOptions')
+    ).to.eql({ test_options: 'chart_settings' })
+
+    await pivotBtn.trigger('click')
+    expect(
+      wrapper.findComponent({ name: 'pivot' }).props('initOptions')
+    ).to.eql({ test_options: 'pivot_settings' })
+
+    const graphBtn = wrapper.findComponent({ ref: 'graphBtn' })
+    await graphBtn.trigger('click')
+    expect(
+      wrapper.findComponent({ name: 'graph' }).props('initOptions')
+    ).to.eql({ test_options: 'latest_graph_options' })
+  })
 })

tests/views/MainView/Workspace/Tabs/Tab/DataView/Graph/Graph.spec.js

@@ -0,0 +1,504 @@
+import { expect } from 'chai'
+import sinon from 'sinon'
+import { mount, flushPromises } from '@vue/test-utils'
+import Graph from '@/views/MainView/Workspace/Tabs/Tab/DataView/Graph/index.vue'
+
+function getPixels(canvas) {
+  const context = canvas.getContext('webgl2')
+  const width = context.canvas.width
+  const height = context.canvas.height
+
+  // Create arrays to hold the pixel data
+  const pixels = new Uint8Array(width * height * 4)
+
+  // Read pixels from canvas
+  context.readPixels(
+    0,
+    0,
+    width,
+    height,
+    context.RGBA,
+    context.UNSIGNED_BYTE,
+    pixels
+  )
+  return pixels.join(' ')
+}
+
+describe('Graph.vue', () => {
+  const $store = { state: { isWorkspaceVisible: true } }
+
+  afterEach(() => {
+    sinon.restore()
+  })
+
+  it('shows message when no data', () => {
+    const wrapper = mount(Graph, {
+      global: {
+        stubs: {
+          GraphEditor: true
+        }
+      },
+      attachTo: document.body
+    })
+    expect(wrapper.find('.no-data').isVisible()).to.equal(true)
+    expect(wrapper.find('.invalid-data').isVisible()).to.equal(false)
+    wrapper.unmount()
+  })
+
+  it('shows message when data is invalid', () => {
+    const wrapper = mount(Graph, {
+      props: {
+        dataSources: {
+          column1: ['value1', 'value2']
+        }
+      },
+      global: {
+        stubs: {
+          GraphEditor: true
+        }
+      },
+      attachTo: document.body
+    })
+    expect(wrapper.find('.no-data').isVisible()).to.equal(false)
+    expect(wrapper.find('.invalid-data').isVisible()).to.equal(true)
+    wrapper.unmount()
+  })
+
+  it('emits update when graph editor updates', async () => {
+    const wrapper = mount(Graph, {
+      global: {
+        stubs: {
+          GraphEditor: true
+        }
+      }
+    })
+    wrapper.findComponent({ ref: 'graphEditor' }).vm.$emit('update')
+    expect(wrapper.emitted('update')).to.have.lengthOf(1)
+  })
+
+  it('the graph resizes when the container resizes', async () => {
+    const wrapper = mount(Graph, {
+      attachTo: document.body,
+      props: {
+        dataSources: {
+          doc: [
+            '{"object_type":0,"node_id":"Gryffindor"}',
+            '{"object_type":0,"node_id":"Hufflepuff"}'
+          ]
+        },
+        initOptions: {
+          structure: {
+            nodeId: 'node_id',
+            objectType: 'object_type',
+            edgeSource: 'source',
+            edgeTarget: 'target'
+          },
+          style: {
+            backgroundColor: 'white',
+            nodes: {
+              size: {
+                type: 'constant',
+                value: 10
+              },
+              color: {
+                type: 'constant',
+                value: '#1F77B4'
+              },
+              label: {
+                source: null,
+                color: '#444444'
+              }
+            },
+            edges: {
+              showDirection: true,
+              size: {
+                type: 'constant',
+                value: 2
+              },
+              color: {
+                type: 'constant',
+                value: '#a2b1c6'
+              },
+              label: {
+                source: null,
+                color: '#a2b1c6'
+              }
+            }
+          },
+          layout: {
+            type: 'circular',
+            options: null
+          }
+        }
+      },
+      global: {
+        mocks: { $store },
+        provide: {
+          tabLayout: { dataView: 'above' }
+        }
+      }
+    })
+
+    const container =
+      wrapper.find('.graph-container').wrapperElement.parentElement
+    const canvas = wrapper.find('canvas.sigma-nodes').wrapperElement
+
+    const initialContainerWidth = container.scrollWidth
+    const initialContainerHeight = container.scrollHeight
+
+    const initialCanvasWidth = canvas.scrollWidth
+    const initialCanvasHeight = canvas.scrollHeight
+
+    const newContainerWidth = initialContainerWidth * 2 || 1000
+    const newContainerHeight = initialContainerHeight * 2 || 2000
+
+    container.style.width = `${newContainerWidth}px`
+    container.style.height = `${newContainerHeight}px`
+
+    await flushPromises()
+
+    expect(canvas.scrollWidth).not.to.equal(initialCanvasWidth)
+    expect(canvas.scrollHeight).not.to.equal(initialCanvasHeight)
+
+    wrapper.unmount()
+  })
+
+  it('nodes and edges are rendered', async () => {
+    const wrapper = mount(Graph, {
+      attachTo: document.body,
+      props: {
+        showViewSettings: true,
+        dataSources: {
+          doc: [
+            '{"object_type": 0, "node_id": 1}',
+            '{"object_type": 0, "node_id": 2}',
+            '{"object_type": 1, "source": 1, "target": 2}'
+          ]
+        }
+      },
+      global: {
+        mocks: { $store },
+        provide: {
+          tabLayout: { dataView: 'above' }
+        }
+      }
+    })
+
+    const container =
+      wrapper.find('.graph-container').wrapperElement.parentElement
+    container.style.height = '400px'
+
+    await wrapper
+      .find('.test_object_type_select.dropdown-container .Select__indicator')
+      .wrapperElement.dispatchEvent(
+        new MouseEvent('mousedown', { bubbles: true })
+      )
+
+    let options = wrapper.findAll('.Select__menu .Select__option')
+
+    await options[0].trigger('click')
+
+    const nodeCanvasPixelsBefore = getPixels(
+      wrapper.find('.test_graph_output canvas.sigma-nodes').wrapperElement
+    )
+    const edgeCanvasPixelsBefore = getPixels(
+      wrapper.find('.test_graph_output canvas.sigma-edges').wrapperElement
+    )
+
+    await wrapper
+      .find('.test_node_id_select.dropdown-container .Select__indicator')
+      .wrapperElement.dispatchEvent(
+        new MouseEvent('mousedown', { bubbles: true })
+      )
+
+    options = wrapper.findAll('.Select__menu .Select__option')
+    await options[1].trigger('click')
+
+    await wrapper
+      .find('.test_edge_source_select.dropdown-container .Select__indicator')
+      .wrapperElement.dispatchEvent(
+        new MouseEvent('mousedown', { bubbles: true })
+      )
+
+    options = wrapper.findAll('.Select__menu .Select__option')
+    await options[2].trigger('click')
+
+    await wrapper
+      .find('.test_edge_target_select.dropdown-container .Select__indicator')
+      .wrapperElement.dispatchEvent(
+        new MouseEvent('mousedown', { bubbles: true })
+      )
+
+    options = wrapper.findAll('.Select__menu .Select__option')
+    await options[3].trigger('click')
+
+    const nodeCanvasPixelsAfter = getPixels(
+      wrapper.find('.test_graph_output canvas.sigma-nodes').wrapperElement
+    )
+    const edgeCanvasPixelsAfter = getPixels(
+      wrapper.find('.test_graph_output canvas.sigma-edges').wrapperElement
+    )
+
+    expect(nodeCanvasPixelsBefore).not.equal(nodeCanvasPixelsAfter)
+    expect(edgeCanvasPixelsBefore).not.equal(edgeCanvasPixelsAfter)
+
+    wrapper.unmount()
+  })
+
+  it('rerenders when dataSource changes but does not rerender if dataSources is empty', async () => {
+    const wrapper = mount(Graph, {
+      attachTo: document.body,
+      props: {
+        showViewSettings: true,
+        dataSources: {
+          doc: [
+            '{"object_type": 0, "node_id": 1}',
+            '{"object_type": 0, "node_id": 2}',
+            '{"object_type": 1, "source": 1, "target": 2}'
+          ]
+        }
+      },
+      global: {
+        mocks: { $store },
+        provide: {
+          tabLayout: { dataView: 'above' }
+        }
+      }
+    })
+
+    const container =
+      wrapper.find('.graph-container').wrapperElement.parentElement
+    container.style.height = '400px'
+
+    await wrapper
+      .find('.test_object_type_select.dropdown-container .Select__indicator')
+      .wrapperElement.dispatchEvent(
+        new MouseEvent('mousedown', { bubbles: true })
+      )
+
+    let options = wrapper.findAll('.Select__menu .Select__option')
+
+    await options[0].trigger('click')
+
+    await wrapper
+      .find('.test_node_id_select.dropdown-container .Select__indicator')
+      .wrapperElement.dispatchEvent(
+        new MouseEvent('mousedown', { bubbles: true })
+      )
+
+    options = wrapper.findAll('.Select__menu .Select__option')
+    await options[1].trigger('click')
+
+    await wrapper
+      .find('.test_edge_source_select.dropdown-container .Select__indicator')
+      .wrapperElement.dispatchEvent(
+        new MouseEvent('mousedown', { bubbles: true })
+      )
+
+    options = wrapper.findAll('.Select__menu .Select__option')
+    await options[2].trigger('click')
+
+    await wrapper
+      .find('.test_edge_target_select.dropdown-container .Select__indicator')
+      .wrapperElement.dispatchEvent(
+        new MouseEvent('mousedown', { bubbles: true })
+      )
+
+    options = wrapper.findAll('.Select__menu .Select__option')
+    await options[3].trigger('click')
+
+    const nodeCanvasPixelsBefore = getPixels(
+      wrapper.find('.test_graph_output canvas.sigma-nodes').wrapperElement
+    )
+    const edgeCanvasPixelsBefore = getPixels(
+      wrapper.find('.test_graph_output canvas.sigma-edges').wrapperElement
+    )
+    await wrapper.setProps({
+      dataSources: {
+        doc: [
+          '{"object_type": 0, "node_id": 1}',
+          '{"object_type": 0, "node_id": 2}',
+          '{"object_type": 0, "node_id": 3}',
+          '{"object_type": 1, "source": 1, "target": 2}',
+          '{"object_type": 1, "source": 1, "target": 3}'
+        ]
+      }
+    })
+
+    const nodeCanvasPixelsAfter = getPixels(
+      wrapper.find('.test_graph_output canvas.sigma-nodes').wrapperElement
+    )
+    const edgeCanvasPixelsAfter = getPixels(
+      wrapper.find('.test_graph_output canvas.sigma-edges').wrapperElement
+    )
+
+    expect(nodeCanvasPixelsBefore).not.equal(nodeCanvasPixelsAfter)
+    expect(edgeCanvasPixelsBefore).not.equal(edgeCanvasPixelsAfter)
+
+    await wrapper.setProps({
+      dataSources: null
+    })
+
+    const nodeCanvasPixelsAfterEmtyData = getPixels(
+      wrapper.find('.test_graph_output canvas.sigma-nodes').wrapperElement
+    )
+    const edgeCanvasPixelsAfterEmtyData = getPixels(
+      wrapper.find('.test_graph_output canvas.sigma-edges').wrapperElement
+    )
+
+    expect(nodeCanvasPixelsAfterEmtyData).equal(nodeCanvasPixelsAfter)
+    expect(edgeCanvasPixelsAfterEmtyData).equal(edgeCanvasPixelsAfter)
+
+    wrapper.unmount()
+  })
+
+  it('saveAsPng', async () => {
+    const wrapper = mount(Graph, {
+      props: {
+        dataSources: {
+          doc: [
+            '{"object_type":0,"node_id":"Gryffindor"}',
+            '{"object_type":0,"node_id":"Hufflepuff"}'
+          ]
+        },
+        initOptions: {
+          structure: {
+            nodeId: 'node_id',
+            objectType: 'object_type',
+            edgeSource: 'source',
+            edgeTarget: 'target'
+          },
+          style: {
+            backgroundColor: 'white',
+            nodes: {
+              size: {
+                type: 'constant',
+                value: 10
+              },
+              color: {
+                type: 'constant',
+                value: '#1F77B4'
+              },
+              label: {
+                source: null,
+                color: '#444444'
+              }
+            },
+            edges: {
+              showDirection: true,
+              size: {
+                type: 'constant',
+                value: 2
+              },
+              color: {
+                type: 'constant',
+                value: '#a2b1c6'
+              },
+              label: {
+                source: null,
+                color: '#a2b1c6'
+              }
+            }
+          },
+          layout: {
+            type: 'circular',
+            options: null
+          }
+        }
+      },
+      global: {
+        mocks: { $store },
+        provide: {
+          tabLayout: { dataView: 'above' }
+        }
+      }
+    })
+    sinon.stub(wrapper.vm.$refs.graphEditor, 'saveAsPng')
+    await wrapper.vm.saveAsPng()
+    expect(wrapper.emitted().loadingImageCompleted.length).to.equal(1)
+  })
+
+  it('hides and shows controls depending on showViewSettings and resizes the graph', async () => {
+    const wrapper = mount(Graph, {
+      attachTo: document.body,
+      props: {
+        dataSources: {
+          doc: [
+            '{"object_type":0,"node_id":"Gryffindor"}',
+            '{"object_type":0,"node_id":"Hufflepuff"}'
+          ]
+        },
+        initOptions: {
+          structure: {
+            nodeId: 'node_id',
+            objectType: 'object_type',
+            edgeSource: 'source',
+            edgeTarget: 'target'
+          },
+          style: {
+            backgroundColor: 'white',
+            nodes: {
+              size: {
+                type: 'constant',
+                value: 10
+              },
+              color: {
+                type: 'constant',
+                value: '#1F77B4'
+              },
+              label: {
+                source: null,
+                color: '#444444'
+              }
+            },
+            edges: {
+              showDirection: true,
+              size: {
+                type: 'constant',
+                value: 2
+              },
+              color: {
+                type: 'constant',
+                value: '#a2b1c6'
+              },
+              label: {
+                source: null,
+                color: '#a2b1c6'
+              }
+            }
+          },
+          layout: {
+            type: 'circular',
+            options: null
+          }
+        }
+      },
+      global: {
+        mocks: { $store },
+        provide: {
+          tabLayout: { dataView: 'above' }
+        }
+      }
+    })
+
+    const canvas = wrapper.find('canvas.sigma-nodes').wrapperElement
+
+    const initialPlotWidth = canvas.scrollWidth
+    const initialPlotHeight = canvas.scrollHeight
+
+    expect(
+      wrapper.find('.plotly_editor .editor_controls').isVisible()
+    ).to.equal(false)
+
+    await wrapper.setProps({ showViewSettings: true })
+
+    await flushPromises()
+
+    expect(canvas.scrollWidth).not.to.equal(initialPlotWidth)
+    expect(canvas.scrollHeight).to.equal(initialPlotHeight)
+    expect(
+      wrapper.find('.plotly_editor .editor_controls').isVisible()
+    ).to.equal(true)
+    wrapper.unmount()
+  })
+})

tests/views/MainView/Workspace/Tabs/Tab/DataView/Pivot/Pivot.spec.js

@@ -1,6 +1,6 @@
 import { expect } from 'chai'
 import { mount, flushPromises } from '@vue/test-utils'
-import Pivot from '@/views/MainView/Workspace/Tabs/Tab/DataView/Pivot'
+import Pivot from '@/views/MainView/Workspace/Tabs/Tab/DataView/Pivot/index.vue'
 import chartHelper from '@/lib/chartHelper'
 import fIo from '@/lib/utils/fileIo'
 import $ from 'jquery'
@@ -586,4 +586,48 @@ describe('Pivot.vue', () => {
 
     wrapper.unmount()
   })
+
+  it('hides or shows controlls depending on showViewSettings and resizes standart chart', async () => {
+    const wrapper = mount(Pivot, {
+      global: {
+        mocks: { $store: { state: { isWorkspaceVisible: true } } }
+      },
+      props: {
+        dataSources: {
+          item: ['foo', 'bar', 'bar', 'bar'],
+          year: [2021, 2021, 2020, 2020]
+        },
+        initOptions: {
+          rows: ['item'],
+          cols: ['year'],
+          colOrder: 'key_a_to_z',
+          rowOrder: 'key_a_to_z',
+          aggregatorName: 'Count',
+          vals: [],
+          renderer: $.pivotUtilities.renderers['Bar Chart'],
+          rendererName: 'Bar Chart'
+        }
+      },
+      attachTo: container
+    })
+
+    expect(wrapper.find('.pivot-ui').isVisible()).to.equal(false)
+
+    await flushPromises()
+
+    const plot = wrapper.find('.svg-container').wrapperElement
+    const initialPlotHeight = plot.scrollHeight
+
+    await wrapper.setProps({ showViewSettings: true })
+    expect(wrapper.find('.pivot-ui').isVisible()).to.equal(true)
+
+    await flushPromises()
+    const plotAfterResize = wrapper.find('.svg-container').wrapperElement
+
+    expect(plotAfterResize.scrollWidth.scrollHeight).not.to.equal(
+      initialPlotHeight
+    )
+
+    wrapper.unmount()
+  })
 })