Symbol palette in Vue Diagram component
11 Jun 202424 minutes to read
The SymbolPalette displays a collection of palettes. The Palette shows a set of nodes and connectors. It allows to drag and drop the nodes and connectors into the Diagram.
Create symbol palette
To create Symbol Palette easily and to add nodes and connectors in it, you can check the video below.
- The
widthandheightproperty of the symbol palette allows to define the size of the symbol palette.
export default {
name: 'app'
data() {
return {
//Defines how many palettes can be at expanded mode at a time
expandMode: "Multiple",
//Defines the palette collection
palettes: [{
//Sets the id of the palette
id: 'flow',
//Sets whether the palette expands/collapse its children
expanded: true,
//Adds the palette items to palette
symbols: flowshapes,
//Sets the header text of the palette
title: 'Flow Shapes',
iconCss: 'e-ddb-icons e-flow'
},
{
id: 'basic',
expanded: true,
symbols: basicShapes,
title: 'Basic Shapes',
iconCss: 'e-ddb-icons e-basic'
},
{
id: 'connectors',
expanded: true,
symbols: connectorSymbols,
title: 'Connectors',
iconCss: 'e-ddb-icons e-connector'
}
],
palettewidth: "100%",
paletteheight: "700px",
symbolHeight: 60,
symbolWidth: 60,
}
}
}Add palettes to SymbolPalette
A palette allows to display a group of related symbols and it textually annotates the group with its header.
Palettespalettes can be added as a collection of symbol groups.
The collection of predefined symbols can be added in palettes using symbols property.
To initialize a palette, define a JSON object with the property id that is unique id is set to the palettes.
The following code example illustrates how to define a palette and how its added to symbol palette.
<template>
<div id="app">
<ejs-symbolpalette id="symbolpalette" :expandMode='expandMode' :palettes='palettes' :width='palettewidth'
:height='paletteheight' :symbolHeight='symbolHeight' :symbolWidth='symbolWidth'></ejs-symbolpalette>
</div>
</template>
<script setup>
import { SymbolPaletteComponent as EjsSymbolpalette } from '@syncfusion/ej2-vue-diagrams';
const flowshapes = [{
id: 'process',
shape: {
type: 'Flow',
shape: 'Process'
}
},
{
id: 'document',
shape: {
type: 'Flow',
shape: 'Document'
}
},
{
id: 'predefinedprocess',
shape: {
type: 'Flow',
shape: 'PreDefinedProcess'
}
}
];
const svgshapes = [{
id: 'node2', style: { fill: 'none' },
annotations: [{ content: 'Start \n Text Editing' }],
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'</g>'
}
}];
const htmlshapes = [{
id: 'HTML', borderColor: 'black', borderWidth: 1,
shape: {
type: 'HTML',
content: '<div style="height:100%;width:100%;"><button type="button" style="width:100%;overflow:hidden">HTML</button></div>'
}
},
{
id: 'Checkbox', borderColor: 'black', borderWidth: 1,
shape: {
type: 'HTML',
content: '<div><div style="height:50%;width:100%;"><input type="checkbox" value="Yes" style="width:25%">Yes</input></div>' +
'<div style="height:50%;width:100%;"><input type="checkbox" value="No" style="width:25%">No</input></div></div>'
}
},
{
id: 'Dropdown', borderColor: 'black', borderWidth: 1,
shape: {
type: 'HTML',
content: '<div style="height:100%;width:100%;"><select style="width:100%"><option>SVG</option><option>Canvas</option></select></div>'
}
}];
const basicShapes = [{
id: 'Rectangle',
shape: {
type: 'Basic',
shape: 'Rectangle'
}
},
{
id: 'Ellipse',
shape: {
type: 'Basic',
shape: 'Ellipse'
}
},
{
id: 'Hexagon',
shape: {
type: 'Basic',
shape: 'Hexagon'
}
}
];
//Initializes connector symbols for the symbol palette
const connectorSymbols = [{
id: 'Link1',
type: 'Orthogonal',
sourcePoint: {
x: 0,
y: 0
},
targetPoint: {
x: 40,
y: 40
},
targetDecorator: {
shape: 'Arrow'
}
},
{
id: 'Link21',
type: 'Straight',
sourcePoint: {
x: 0,
y: 0
},
targetPoint: {
x: 40,
y: 40
},
targetDecorator: {
shape: 'Arrow'
}
},
{
id: 'link33',
type: 'Bezier',
sourcePoint: {
x: 0,
y: 0
},
targetPoint: {
x: 40,
y: 40
},
style: {
strokeWidth: 2
},
targetDecorator: {
shape: 'None'
}
}
];
//Defines how many palettes can be at expanded mode at a time
const expandMode = "Multiple";
//Defines the palette collection
const palettes = [{
//Sets the id of the palette
id: 'flow',
//Sets whether the palette expands/collapse its children
expanded: true,
//Adds the palette items to palette
symbols: flowshapes,
//Sets the header text of the palette
title: 'Flow Shapes',
iconCss: 'e-ddb-icons e-flow'
},
{
//Sets the id of the palette
id: 'svg',
//Sets whether the palette expands/collapse its children
expanded: true,
//Adds the palette items to palette
symbols: svgshapes,
//Sets the header text of the palette
title: 'SVG Shapes',
iconCss: 'e-ddb-icons e-flow'
},
{
//Sets the id of the palette
id: 'html',
//Sets whether the palette expands/collapse its children
expanded: true,
//Adds the palette items to palette
symbols: htmlshapes,
//Sets the header text of the palette
title: 'HTML Shapes',
iconCss: 'e-ddb-icons e-flow'
},
{
id: 'basic',
expanded: true,
symbols: basicShapes,
title: 'Basic Shapes',
iconCss: 'e-ddb-icons e-basic'
},
{
id: 'connectors',
expanded: true,
symbols: connectorSymbols,
title: 'Connectors',
iconCss: 'e-ddb-icons e-connector'
}]
const palettewidth = "100%";
const paletteheight = "700px";
const symbolHeight = 60;
const symbolWidth = 60;
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-diagrams/styles/material.css";
</style><template>
<div id="app">
<ejs-symbolpalette id="symbolpalette" :expandMode='expandMode' :palettes='palettes' :width='palettewidth'
:height='paletteheight' :symbolHeight='symbolHeight' :symbolWidth='symbolWidth'>
</ejs-symbolpalette>
</div>
</template>
<script>
import { SymbolPaletteComponent } from '@syncfusion/ej2-vue-diagrams';
let flowshapes = [{
id: 'process',
shape: {
type: 'Flow',
shape: 'Process'
}
},
{
id: 'document',
shape: {
type: 'Flow',
shape: 'Document'
}
},
{
id: 'predefinedprocess',
shape: {
type: 'Flow',
shape: 'PreDefinedProcess'
}
}
];
let svgshapes = [{
id: 'node2', style: { fill: 'none' },
annotations: [{ content: 'Start \n Text Editing' }],
shape: {
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}
}];
let htmlshapes = [{
id: 'HTML', borderColor: 'black', borderWidth: 1,
shape: {
type: 'HTML',
content: '<div style="height:100%;width:100%;"><button type="button" style="width:100%;overflow:hidden">HTML</button></div>'
}
},
{
id: 'Checkbox', borderColor: 'black', borderWidth: 1,
shape: {
type: 'HTML',
content: '<div><div style="height:50%;width:100%;"><input type="checkbox" value="Yes" style="width:25%">Yes</input></div>' +
'<div style="height:50%;width:100%;"><input type="checkbox" value="No" style="width:25%">No</input></div></div>'
}
},
{
id: 'Dropdown', borderColor: 'black', borderWidth: 1,
shape: {
type: 'HTML',
content: '<div style="height:100%;width:100%;"><select style="width:100%"><option>SVG</option><option>Canvas</option></select></div>'
}
}];
let basicShapes = [{
id: 'Rectangle',
shape: {
type: 'Basic',
shape: 'Rectangle'
}
},
{
id: 'Ellipse',
shape: {
type: 'Basic',
shape: 'Ellipse'
}
},
{
id: 'Hexagon',
shape: {
type: 'Basic',
shape: 'Hexagon'
}
}
];
//Initializes connector symbols for the symbol palette
let connectorSymbols = [{
id: 'Link1',
type: 'Orthogonal',
sourcePoint: {
x: 0,
y: 0
},
targetPoint: {
x: 40,
y: 40
},
targetDecorator: {
shape: 'Arrow'
}
},
{
id: 'Link21',
type: 'Straight',
sourcePoint: {
x: 0,
y: 0
},
targetPoint: {
x: 40,
y: 40
},
targetDecorator: {
shape: 'Arrow'
}
},
{
id: 'link33',
type: 'Bezier',
sourcePoint: {
x: 0,
y: 0
},
targetPoint: {
x: 40,
y: 40
},
style: {
strokeWidth: 2
},
targetDecorator: {
shape: 'None'
}
}
];
export default {
name: "App",
components: {
"ejs-symbolpalette": SymbolPaletteComponent
},
data() {
return {
//Defines how many palettes can be at expanded mode at a time
expandMode: "Multiple",
//Defines the palette collection
palettes: [{
//Sets the id of the palette
id: 'flow',
//Sets whether the palette expands/collapse its children
expanded: true,
//Adds the palette items to palette
symbols: flowshapes,
//Sets the header text of the palette
title: 'Flow Shapes',
iconCss: 'e-ddb-icons e-flow'
},
{
//Sets the id of the palette
id: 'svg',
//Sets whether the palette expands/collapse its children
expanded: true,
//Adds the palette items to palette
symbols: svgshapes,
//Sets the header text of the palette
title: 'SVG Shapes',
iconCss: 'e-ddb-icons e-flow'
},
{
//Sets the id of the palette
id: 'html',
//Sets whether the palette expands/collapse its children
expanded: true,
//Adds the palette items to palette
symbols: htmlshapes,
//Sets the header text of the palette
title: 'HTML Shapes',
iconCss: 'e-ddb-icons e-flow'
},
{
id: 'basic',
expanded: true,
symbols: basicShapes,
title: 'Basic Shapes',
iconCss: 'e-ddb-icons e-basic'
},
{
id: 'connectors',
expanded: true,
symbols: connectorSymbols,
title: 'Connectors',
iconCss: 'e-ddb-icons e-connector'
}
],
palettewidth: "100%",
paletteheight: "700px",
symbolHeight: 60,
symbolWidth: 60,
};
}
}
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-diagrams/styles/material.css";
</style>Customize the Palette Header
Palettes can be annotated with its header texts.
The title displayed as the header text of palette.
The expanded property of palette allows to expand/collapse its palette items.
The height property of palette sets the height of the symbol group.
The iconCss property sets the content of the symbol group.
The description defines the text to be displayed and how that is to be handled in getSymbolInfo.
Also, we can embed any HTML element into a palette header by defining the getSymbolInfo property.
Following code example illustrates how to customize palette headers.
<template>
<div id="app">
<ejs-symbolpalette id="symbolpalette" :expandMode='expandMode' :palettes='palettes'
:getSymbolInfo='getSymbolInfo' :width='palettewidth' :height='paletteheight' :symbolHeight='symbolHeight'
:symbolWidth='symbolWidth'>
</ejs-symbolpalette>
</div>
</template>
<script setup>
import { SymbolPaletteComponent as EjsSymbolpalette } from '@syncfusion/ej2-vue-diagrams';
let basicShapes = [{
id: 'Rectangle',
shape: {
type: 'Basic',
shape: 'Rectangle'
}
},
{
id: 'Ellipse',
shape: {
type: 'Basic',
shape: 'Ellipse'
}
},
{
id: 'Hexagon',
shape: {
type: 'Basic',
shape: 'Hexagon'
}
}
];
//Defines how many palettes can be at expanded mode at a time
const expandMode = "Multiple";
//Defines the palette collection
const palettes = [{
id: 'basic',
expanded: true,
symbols: basicShapes,
title: 'Basic Shapes',
iconCss: 'e-ddb-icons e-basic'
},]
const getSymbolInfo = (symbol) => {
if (symbol['text'] !== undefined) {
return {
width: 75,
height: 40,
//Add or Remove the Text for Symbol palette item.
description: {
//Defines the symbol description
text: symbol['text'],
//Defines how to handle the text when its size exceeds the given symbol size
overflow: 'Wrap'
}
};
}
return {
width: 75,
height: 40,
description: {
text: symbol.shape['shape']
}
};
}
const palettewidth = "100%";
const paletteheight = "700px";
const symbolHeight = 60;
const symbolWidth = 60;
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-diagrams/styles/material.css";
</style><template>
<div id="app">
<ejs-symbolpalette id="symbolpalette" :expandMode='expandMode' :palettes='palettes'
:getSymbolInfo='getSymbolInfo' :width='palettewidth' :height='paletteheight' :symbolHeight='symbolHeight'
:symbolWidth='symbolWidth'>
</ejs-symbolpalette>
</div>
</template>
<script>
import { SymbolPaletteComponent } from '@syncfusion/ej2-vue-diagrams';
let basicShapes = [{
id: 'Rectangle',
shape: {
type: 'Basic',
shape: 'Rectangle'
}
},
{
id: 'Ellipse',
shape: {
type: 'Basic',
shape: 'Ellipse'
}
},
{
id: 'Hexagon',
shape: {
type: 'Basic',
shape: 'Hexagon'
}
}
];
export default {
name: "App",
components: {
"ejs-symbolpalette": SymbolPaletteComponent
},
data() {
return {
//Defines how many palettes can be at expanded mode at a time
expandMode: "Multiple",
//Defines the palette collection
palettes: [{
id: 'basic',
expanded: true,
symbols: basicShapes,
title: 'Basic Shapes',
iconCss: 'e-ddb-icons e-basic'
},],
getSymbolInfo: (symbol) => {
if (symbol['text'] !== undefined) {
return {
width: 75,
height: 40,
//Add or Remove the Text for Symbol palette item.
description: {
//Defines the symbol description
text: symbol['text'],
//Defines how to handle the text when its size exceeds the given symbol size
overflow: 'Wrap'
}
};
}
return {
width: 75,
height: 40,
description: {
text: symbol.shape['shape']
}
};
},
palettewidth: "100%",
paletteheight: "700px",
symbolHeight: 60,
symbolWidth: 60,
};
}
}
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-diagrams/styles/material.css";
</style>Restrict expansion of the palette panel
The symbol palette panel can be restricted from getting expanded. The [cancel] argument of the [paletteExpanding] property defines whether the palette’s panel should be expanded or collapsed. By default, the panel is expanded. This restriction can be done for each of the palettes in the symbol palette as desired.
In the following code example, the basic shapes palette is restricted from getting collapsed whereas the swimlane shapes palette can be expanded or collapsed.
<template>
<div id="app">
<ejs-symbolpalette id="symbolpalette" :expandMode='expandMode' :palettes='palettes' :width='palettewidth'
:height='paletteheight' :symbolPreview='symbolPreview' :symbolHeight='symbolHeight'
:symbolWidth='symbolWidth' :getSymbolInfo='getSymbolInfo' :paletteExpanding='paletteExpanding'>
</ejs-symbolpalette>
</div>
</template>
<script setup>
import { SymbolPaletteComponent as EjsSymbolpalette } from '@syncfusion/ej2-vue-diagrams';
const basicShapes = [{
id: 'Rectangle',
shape: {
type: 'Basic',
shape: 'Rectangle'
}
},
{
id: 'Ellipse',
shape: {
type: 'Basic',
shape: 'Ellipse'
}
},
{
id: 'Hexagon',
shape: {
type: 'Basic',
shape: 'Hexagon'
}
}
];
const swimlaneShapes = [{
id: 'swimlaneShapes', expanded: true,
title: 'Swimlane Shapes',
symbols: [
{
id: 'stackCanvas1',
shape: {
type: 'SwimLane', lanes: [
{
id: 'lane1',
style: { fill: '#f5f5f5' }, height: 60, width: 150,
header: { width: 50, height: 50, style: { fill: '#C7D4DF' } },
}
],
orientation: 'Horizontal', isLane: true
},
height: 60,
width: 140,
style: { fill: '#f5f5f5' },
offsetX: 70,
offsetY: 30,
}
]
},
];
//Defines how many palettes can be at expanded mode at a time
const expandMode = "Multiple";
//Defines the palette collection
const palettes = [{
id: 'basic',
expanded: true,
symbols: basicShapes,
title: 'Basic Shapes',
iconCss: 'e-ddb-icons e-basic'
},
{
id: 'swimlane',
expanded: true,
symbols: swimlaneShapes,
title: 'Swimlane Shapes',
iconCss: 'e-ddb-icons e-basic'
}]
const palettewidth = "100%";
const paletteheight = "700px";
const symbolHeight = 50;
const symbolWidth = 50;
const symbolPreview = {
height: 100,
width: 100
}
const getSymbolInfo = (symbol) => {
return { fit: true };
}
const paletteExpanding = (args) => {
if (args.palette.id === 'basic') {
// Basic shapes panel does not collapse or cexpand
args.cancel = true;
} else {
if (args.palette.id === 'swimlane') {
// Swimlane shapes panel collapse
args.cancel = false;
}
}
}
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-diagrams/styles/material.css";
</style><template>
<div id="app">
<ejs-symbolpalette id="symbolpalette" :expandMode='expandMode' :palettes='palettes' :width='palettewidth'
:height='paletteheight' :symbolPreview='symbolPreview' :symbolHeight='symbolHeight'
:symbolWidth='symbolWidth' :getSymbolInfo='getSymbolInfo'
:paletteExpanding='paletteExpanding'></ejs-symbolpalette>
</div>
</template>
<script>
import { SymbolPaletteComponent } from '@syncfusion/ej2-vue-diagrams';
let basicShapes = [{
id: 'Rectangle',
shape: {
type: 'Basic',
shape: 'Rectangle'
}
},
{
id: 'Ellipse',
shape: {
type: 'Basic',
shape: 'Ellipse'
}
},
{
id: 'Hexagon',
shape: {
type: 'Basic',
shape: 'Hexagon'
}
}
];
let swimlaneShapes = [{
id: 'swimlaneShapes', expanded: true,
title: 'Swimlane Shapes',
symbols: [
{
id: 'stackCanvas1',
shape: {
type: 'SwimLane', lanes: [
{
id: 'lane1',
style: { fill: '#f5f5f5' }, height: 60, width: 150,
header: { width: 50, height: 50, style: { fill: '#C7D4DF' } },
}
],
orientation: 'Horizontal', isLane: true
},
height: 60,
width: 140,
style: { fill: '#f5f5f5' },
offsetX: 70,
offsetY: 30,
}
]
},
];
export default {
name: "App",
components: {
"ejs-symbolpalette": SymbolPaletteComponent
},
data() {
return {
//Defines how many palettes can be at expanded mode at a time
expandMode: "Multiple",
//Defines the palette collection
palettes: [{
id: 'basic',
expanded: true,
symbols: basicShapes,
title: 'Basic Shapes',
iconCss: 'e-ddb-icons e-basic'
},
{
id: 'swimlane',
expanded: true,
symbols: swimlaneShapes,
title: 'Swimlane Shapes',
iconCss: 'e-ddb-icons e-basic'
},],
palettewidth: "100%",
paletteheight: "700px",
symbolHeight: 50,
symbolWidth: 50,
symbolPreview: {
height: 100,
width: 100
},
getSymbolInfo: (symbol) => {
return { fit: true };
},
paletteExpanding: (args) => {
if (args.palette.id === 'basic') {
// Basic shapes panel does not collapse or cexpand
args.cancel = true;
} else {
if (args.palette.id === 'swimlane') {
// Swimlane shapes panel collapse
args.cancel = false;
}
}
}
};
}
}
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-diagrams/styles/material.css";
</style>Stretch the symbols into the palette
The fit property defines whether the symbol has to be fit inside the size, that is defined by the symbol palette. For example, When we resize the rectangle in the symbol, ratio of the rectangle size has to be maintained rather changing into square shape. The following code example illustrates how to customize the symbol size.
<template>
<div id="app">
<ejs-symbolpalette id="symbolpalette" :expandMode='expandMode' :palettes='palettes'
:getSymbolInfo='getSymbolInfo' :width='palettewidth' :height='paletteheight' :symbolHeight='symbolHeight'
:symbolWidth='symbolWidth'>
</ejs-symbolpalette>
</div>
</template>
<script setup>
import { SymbolPaletteComponent as EjsSymbolpalette } from '@syncfusion/ej2-vue-diagrams';
let basicShapes = [{
id: 'Rectangle',
shape: {
type: 'Basic',
shape: 'Rectangle'
}
},
{
id: 'Ellipse',
shape: {
type: 'Basic',
shape: 'Ellipse'
}
},
{
id: 'Hexagon',
shape: {
type: 'Basic',
shape: 'Hexagon'
}
}
];
//Defines how many palettes can be at expanded mode at a time
const expandMode = "Multiple";
//Defines the palette collection
const palettes = [{
id: 'basic',
expanded: true,
symbols: basicShapes,
title: 'Basic Shapes',
iconCss: 'e-ddb-icons e-basic'
},]
const getSymbolInfo = (symbol) => {
// Enables to fit the content into the specified palette item size
return {
fit: true
};
// When it is set as false, the element is rendered with actual node size
}
const palettewidth = "100%";
const paletteheight = "700px";
const symbolHeight = 60;
const symbolWidth = 60;
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-diagrams/styles/material.css";
</style><template>
<div id="app">
<ejs-symbolpalette id="symbolpalette" :expandMode='expandMode' :palettes='palettes'
:getSymbolInfo='getSymbolInfo' :width='palettewidth' :height='paletteheight' :symbolHeight='symbolHeight'
:symbolWidth='symbolWidth'></ejs-symbolpalette>
</div>
</template>
<script>
import { SymbolPaletteComponent } from '@syncfusion/ej2-vue-diagrams';
let basicShapes = [{
id: 'Rectangle',
shape: {
type: 'Basic',
shape: 'Rectangle'
}
},
{
id: 'Ellipse',
shape: {
type: 'Basic',
shape: 'Ellipse'
}
},
{
id: 'Hexagon',
shape: {
type: 'Basic',
shape: 'Hexagon'
}
}
];
export default {
name: "App",
components: {
"ejs-symbolpalette": SymbolPaletteComponent
},
data() {
return {
//Defines how many palettes can be at expanded mode at a time
expandMode: "Multiple",
//Defines the palette collection
palettes: [{
id: 'basic',
expanded: true,
symbols: basicShapes,
title: 'Basic Shapes',
iconCss: 'e-ddb-icons e-basic'
},],
getSymbolInfo: (symbol) => {
// Enables to fit the content into the specified palette item size
return {
fit: true
};
// When it is set as false, the element is rendered with actual node size
},
palettewidth: "100%",
paletteheight: "700px",
symbolHeight: 60,
symbolWidth: 60,
};
}
}
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-diagrams/styles/material.css";
</style>Add/Remove symbols to palette at runtime
-
Symbols can be added to palette at runtime by using public method,
addPaletteItem. -
Symbols can be removed from palette at runtime by using public method,
removePaletteItem.
Customize the size of symbols
You can customize the size of the individual symbol. The symbolWidth and symbolHeight property of node enables you to define the size of the symbols. The following code example illustrates how to change the size of a symbol.
<template>
<div id="app">
<ejs-symbolpalette id="symbolpalette" :expandMode='expandMode' :palettes='palettes' :symbolMargin='symbolMargin'
:width='palettewidth' :height='paletteheight' :symbolHeight='symbolHeight' :symbolWidth='symbolWidth'>
</ejs-symbolpalette>
</div>
</template>
<script setup>
import { SymbolPaletteComponent as EjsSymbolpalette } from '@syncfusion/ej2-vue-diagrams';
let basicShapes = [{
id: 'Rectangle',
shape: {
type: 'Basic',
shape: 'Rectangle'
}
},
{
id: 'Ellipse',
shape: {
type: 'Basic',
shape: 'Ellipse'
}
},
{
id: 'Hexagon',
shape: {
type: 'Basic',
shape: 'Hexagon'
}
}
];
//Defines how many palettes can be at expanded mode at a time
const expandMode = "Multiple";
//Defines the palette collection
const palettes = [{
id: 'basic',
expanded: true,
symbols: basicShapes,
title: 'Basic Shapes',
iconCss: 'e-ddb-icons e-basic'
}];
const symbolMargin = {
left: 15,
right: 15,
top: 15,
bottom: 15
};
const palettewidth = "100%";
const paletteheight = "700px";
const symbolHeight = 60;
const symbolWidth = 60;
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-diagrams/styles/material.css";
</style><template>
<div id="app">
<ejs-symbolpalette id="symbolpalette" :expandMode='expandMode' :palettes='palettes' :symbolMargin='symbolMargin'
:width='palettewidth' :height='paletteheight' :symbolHeight='symbolHeight' :symbolWidth='symbolWidth'>
</ejs-symbolpalette>
</div>
</template>
<script>
import { SymbolPaletteComponent } from '@syncfusion/ej2-vue-diagrams';
let basicShapes = [{
id: 'Rectangle',
shape: {
type: 'Basic',
shape: 'Rectangle'
}
},
{
id: 'Ellipse',
shape: {
type: 'Basic',
shape: 'Ellipse'
}
},
{
id: 'Hexagon',
shape: {
type: 'Basic',
shape: 'Hexagon'
}
}
];
export default {
name: "App",
components: {
"ejs-symbolpalette": SymbolPaletteComponent
},
data() {
return {
//Defines how many palettes can be at expanded mode at a time
expandMode: "Multiple",
//Defines the palette collection
palettes: [{
id: 'basic',
expanded: true,
symbols: basicShapes,
title: 'Basic Shapes',
iconCss: 'e-ddb-icons e-basic'
},],
symbolMargin: {
left: 15,
right: 15,
top: 15,
bottom: 15
},
palettewidth: "100%",
paletteheight: "700px",
symbolHeight: 60,
symbolWidth: 60,
};
}
}
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-diagrams/styles/material.css";
</style>The symbolMargin property is used to create the space around elements, outside of any defined borders.
Symbol Preview
The Symbol Preview size of the palette items can be customized using symbolPreview.
The width and height property of SymbolPalette enables you to define the preview size to all the symbol palette items.
offset of the dragging helper relative to the mouse cursor.
The following code example illustrates how to change the preview size of a palette item.
<template>
<div id="app">
<ejs-symbolpalette id="symbolpalette" :expandMode='expandMode' :palettes='palettes'
:getSymbolInfo='getSymbolInfo' :symbolMargin='symbolMargin' :width='palettewidth'
:symbolPreview='symbolPreview' :height='paletteheight' :symbolHeight='symbolHeight'
:symbolWidth='symbolWidth'></ejs-symbolpalette>
</div>
</template>
<script setup>
import { SymbolPaletteComponent as EjsSymbolpalette } from '@syncfusion/ej2-vue-diagrams';
let basicShapes = [{
id: 'Rectangle',
shape: {
type: 'Basic',
shape: 'Rectangle'
}
},
{
id: 'Ellipse',
shape: {
type: 'Basic',
shape: 'Ellipse'
}
},
{
id: 'Hexagon',
shape: {
type: 'Basic',
shape: 'Hexagon'
}
}
];
//Defines how many palettes can be at expanded mode at a time
const expandMode = "Multiple";
//Defines the palette collection
const palettes = [{
id: 'basic',
expanded: true,
symbols: basicShapes,
title: 'Basic Shapes',
iconCss: 'e-ddb-icons e-basic'
}]
const symbolMargin = {
left: 15,
right: 15,
top: 15,
bottom: 15
}
const getSymbolInfo = (symbol) => {
return {
fit: true
};
}
const symbolPreview = {
height: 100,
width: 100,
offset: {
x: 0.5,
y: 0.5
}
}
const palettewidth = "100%";
const paletteheight = "700px";
const symbolHeight = 60;
const symbolWidth = 60;
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-diagrams/styles/material.css";
</style><template>
<div id="app">
<ejs-symbolpalette id="symbolpalette" :expandMode='expandMode' :palettes='palettes'
:getSymbolInfo='getSymbolInfo' :symbolMargin='symbolMargin' :width='palettewidth'
:symbolPreview='symbolPreview' :height='paletteheight' :symbolHeight='symbolHeight'
:symbolWidth='symbolWidth'></ejs-symbolpalette>
</div>
</template>
<script>
import { SymbolPaletteComponent } from '@syncfusion/ej2-vue-diagrams';
let basicShapes = [{
id: 'Rectangle',
shape: {
type: 'Basic',
shape: 'Rectangle'
}
},
{
id: 'Ellipse',
shape: {
type: 'Basic',
shape: 'Ellipse'
}
},
{
id: 'Hexagon',
shape: {
type: 'Basic',
shape: 'Hexagon'
}
}
];
export default {
name: "App",
components: {
"ejs-symbolpalette": SymbolPaletteComponent
},
data() {
return {
//Defines how many palettes can be at expanded mode at a time
expandMode: "Multiple",
//Defines the palette collection
palettes: [{
id: 'basic',
expanded: true,
symbols: basicShapes,
title: 'Basic Shapes',
iconCss: 'e-ddb-icons e-basic'
},],
symbolMargin: {
left: 15,
right: 15,
top: 15,
bottom: 15
},
getSymbolInfo: (symbol) => {
return {
fit: true
};
},
symbolPreview: {
height: 100,
width: 100,
offset: {
x: 0.5,
y: 0.5
}
},
palettewidth: "100%",
paletteheight: "700px",
symbolHeight: 60,
symbolWidth: 60,
};
}
}
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-diagrams/styles/material.css";
</style>Default Settings
While adding more number of symbols such as nodes and connectors to the palette, you can define the default settings for those objects through getNodeDefaults property of defaultSettings allows to define the default settings for nodes and getConnectorDefaults property of defaultSettings allows to define the default settings for connectors.
<template>
<div id="app">
<ejs-symbolpalette id="symbolpalette" :expandMode='expandMode' :palettes='palettes'
:getSymbolInfo='getSymbolInfo' :symbolMargin='symbolMargin' :width='palettewidth'
:getNodeDefaults='palettegetNodeDefaults' :symbolPreview='symbolPreview' :height='paletteheight'
:symbolHeight='symbolHeight' :symbolWidth='symbolWidth'>
</ejs-symbolpalette>
</div>
</template>
<script setup>
import { SymbolPaletteComponent as EjsSymbolpalette } from '@syncfusion/ej2-vue-diagrams';
let basicShapes = [{
id: 'Rectangle',
shape: {
type: 'Basic',
shape: 'Rectangle'
}
},
{
id: 'Ellipse',
shape: {
type: 'Basic',
shape: 'Ellipse'
}
},
{
id: 'Hexagon',
shape: {
type: 'Basic',
shape: 'Hexagon'
}
}
];
//Defines how many palettes can be at expanded mode at a time
const expandMode = "Multiple";
//Defines the palette collection
const palettes = [{
id: 'basic',
expanded: true,
symbols: basicShapes,
title: 'Basic Shapes',
iconCss: 'e-ddb-icons e-basic'
}]
const symbolMargin = {
left: 15,
right: 15,
top: 15,
bottom: 15
}
const palettegetNodeDefaults = (node) => {
node.width = 100;
node.height = 100;
node.style.strokeColor = '#3A3A3A';
}
const getSymbolInfo = (symbol) => {
return {
fit: true
};
}
const symbolPreview = {
height: 100,
width: 100,
offset: {
x: 0.5,
y: 0.5
}
}
const palettewidth = "100%";
const paletteheight = "700px";
const symbolHeight = 60;
const symbolWidth = 60;
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-diagrams/styles/material.css";
</style><template>
<div id="app">
<ejs-symbolpalette id="symbolpalette" :expandMode='expandMode' :palettes='palettes'
:getSymbolInfo='getSymbolInfo' :symbolMargin='symbolMargin' :width='palettewidth'
:getNodeDefaults='palettegetNodeDefaults' :symbolPreview='symbolPreview' :height='paletteheight'
:symbolHeight='symbolHeight' :symbolWidth='symbolWidth'></ejs-symbolpalette>
</div>
</template>
<script>
import { SymbolPaletteComponent } from '@syncfusion/ej2-vue-diagrams';
let basicShapes = [{
id: 'Rectangle',
shape: {
type: 'Basic',
shape: 'Rectangle'
}
},
{
id: 'Ellipse',
shape: {
type: 'Basic',
shape: 'Ellipse'
}
},
{
id: 'Hexagon',
shape: {
type: 'Basic',
shape: 'Hexagon'
}
}
];
export default {
name: "App",
components: {
"ejs-symbolpalette": SymbolPaletteComponent
},
data() {
return {
//Defines how many palettes can be at expanded mode at a time
expandMode: "Multiple",
//Defines the palette collection
palettes: [{
id: 'basic',
expanded: true,
symbols: basicShapes,
title: 'Basic Shapes',
iconCss: 'e-ddb-icons e-basic'
},],
symbolMargin: {
left: 15,
right: 15,
top: 15,
bottom: 15
},
palettegetNodeDefaults: (node) => {
node.width = 100;
node.height = 100;
node.style.strokeColor = '#3A3A3A';
},
getSymbolInfo: (symbol) => {
return {
fit: true
};
},
symbolPreview: {
height: 100,
width: 100,
offset: {
x: 0.5,
y: 0.5
}
},
palettewidth: "100%",
paletteheight: "700px",
symbolHeight: 60,
symbolWidth: 60,
};
}
}
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-diagrams/styles/material.css";
</style>Adding symbol description for symbols in the palette
The diagram provides support to add symbol description below each symbol of a palette. This descriptive representation of each symbol will enhance the details of the symbol visually. The height and width of the symbol description can also be set individually.
- The property
getSymbolInfo, can be used to add the symbol description at runtime.
The following code is an example to set a symbol description for symbols in the palette.
<template>
<div id="app">
<ejs-symbolpalette id="symbolpalette" :expandMode='expandMode' :palettes='palettes' :width='palettewidth'
:height='paletteheight' :symbolHeight='symbolHeight' :symbolWidth='symbolWidth'
:getSymbolInfo='getSymbolInfo'>
</ejs-symbolpalette>
</div>
</template>
<script setup>
import { SymbolPaletteComponent as EjsSymbolpalette } from '@syncfusion/ej2-vue-diagrams';
let basicShapes = [{
id: 'Rectangle',
shape: {
type: 'Basic',
shape: 'Rectangle'
}, style: { strokeWidth: 2 }
},
{
id: 'Ellipse',
shape: {
type: 'Basic',
shape: 'Ellipse'
}, style: { strokeWidth: 2 }
},
{
id: 'Hexagon',
shape: {
type: 'Basic',
shape: 'Hexagon'
}, style: { strokeWidth: 2 }
}
];
let swimlaneShapes = [{
id: 'swimlaneShapes', expanded: true,
title: 'Swimlane Shapes',
symbols: [
{
id: 'stackCanvas1',
shape: {
type: 'SwimLane', lanes: [
{
id: 'lane1',
style: { fill: '#f5f5f5' }, height: 60, width: 150,
header: { width: 50, height: 50, style: { fill: '#C7D4DF' } },
}
],
orientation: 'Horizontal', isLane: true
},
height: 60,
width: 140,
style: { fill: '#f5f5f5' },
offsetX: 70,
offsetY: 30,
}
]
},
];
//Defines how many palettes can be at expanded mode at a time
const expandMode = "Multiple";
//Defines the palette collection
const palettes = [{
id: 'basic',
expanded: true,
symbols: basicShapes,
title: 'Basic Shapes',
iconCss: 'e-ddb-icons e-basic'
},
{
id: 'swimlane',
expanded: true,
symbols: swimlaneShapes,
title: 'Swimlane Shapes',
iconCss: 'e-ddb-icons e-basic'
}]
const palettewidth = "100%";
const paletteheight = "700px";
const symbolHeight = 80;
const symbolWidth = 80;
const getSymbolInfo = (symbol) => {
//Sets the description for symbols
return { width: 75, height: 40, description: { text: symbol.shape['shape'] } };
}
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-diagrams/styles/material.css";
</style><template>
<div id="app">
<ejs-symbolpalette id="symbolpalette" :expandMode='expandMode' :palettes='palettes' :width='palettewidth'
:height='paletteheight' :symbolHeight='symbolHeight' :symbolWidth='symbolWidth'
:getSymbolInfo='getSymbolInfo'>
</ejs-symbolpalette>
</div>
</template>
<script>
import { SymbolPaletteComponent } from '@syncfusion/ej2-vue-diagrams';
let basicShapes = [{
id: 'Rectangle',
shape: {
type: 'Basic',
shape: 'Rectangle'
}, style: { strokeWidth: 2 }
},
{
id: 'Ellipse',
shape: {
type: 'Basic',
shape: 'Ellipse'
}, style: { strokeWidth: 2 }
},
{
id: 'Hexagon',
shape: {
type: 'Basic',
shape: 'Hexagon'
}, style: { strokeWidth: 2 }
}
];
let swimlaneShapes = [{
id: 'swimlaneShapes', expanded: true,
title: 'Swimlane Shapes',
symbols: [
{
id: 'stackCanvas1',
shape: {
type: 'SwimLane', lanes: [
{
id: 'lane1',
style: { fill: '#f5f5f5' }, height: 60, width: 150,
header: { width: 50, height: 50, style: { fill: '#C7D4DF' } },
}
],
orientation: 'Horizontal', isLane: true
},
height: 60,
width: 140,
style: { fill: '#f5f5f5' },
offsetX: 70,
offsetY: 30,
}
]
},
];
export default {
name: "App",
components: {
"ejs-symbolpalette": SymbolPaletteComponent
},
data() {
return {
//Defines how many palettes can be at expanded mode at a time
expandMode: "Multiple",
//Defines the palette collection
palettes: [{
id: 'basic',
expanded: true,
symbols: basicShapes,
title: 'Basic Shapes',
iconCss: 'e-ddb-icons e-basic'
},
{
id: 'swimlane',
expanded: true,
symbols: swimlaneShapes,
title: 'Swimlane Shapes',
iconCss: 'e-ddb-icons e-basic'
},],
palettewidth: "100%",
paletteheight: "700px",
symbolHeight: 80,
symbolWidth: 80,
getSymbolInfo: (symbol) => {
//Sets the description for symbols
return { width: 75, height: 40, description: { text: symbol.shape['shape'] } };
}
};
}
}
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-diagrams/styles/material.css";
</style>Appearance of symbol description
The appearance of a symbol description in the palette can be customized by changing its color, fontSize, fontFamily, bold, italic, textDecoration, and margin.
The following code is an example to change the color of a symbol description for symbols in the palette.
<template>
<div id="app">
<ejs-symbolpalette id="symbolpalette" :palettes='palettes' :width='palettewidth' :height='paletteheight'
:symbolMargin='symbolMargin' :getNodeDefaults='palettegetNodeDefaults' :symbolHeight='symbolHeight'
:symbolWidth='symbolWidth' :getSymbolInfo='getSymbolInfo'>
</ejs-symbolpalette>
</div>
</template>
<script setup>
import { SymbolPaletteComponent as EjsSymbolpalette } from '@syncfusion/ej2-vue-diagrams';
let umlShapes = [
{
id: 'class',
style: {
fill: '#26A0DA',
},
borderColor: 'white',
shape: {
type: 'UmlClassifier',
classShape: {
attributes: [
{ name: 'accepted', type: 'Date', style: { color: "red", fontFamily: "Arial", textDecoration: 'Underline', italic: true }, isSeparator: true },
],
methods: [{ name: 'getHistory', style: {}, parameters: [{ name: 'Date', style: {} }], type: 'History' }],
name: 'Patient'
},
classifier: 'Class'
},
},
{
id: 'Interface',
style: {
fill: '#26A0DA',
}, borderColor: 'white',
shape: {
type: 'UmlClassifier',
interfaceShape: {
name: "Bank Account",
},
classifier: 'Interface'
},
},
{
id: 'Enumeration',
style: {
fill: '#26A0DA',
}, borderColor: 'white',
shape: {
type: 'UmlClassifier',
enumerationShape: {
name: 'AccountType',
members: [
{
name: 'Checking Account', style: {}
},
]
},
classifier: 'Enumeration'
},
},
];
//Defines the palette collection
const palettes = [{
id: 'uml',
expanded: true,
symbols: umlShapes,
title: 'UML Shapes',
}];
const palettewidth = "100%";
const paletteheight = "700px";
const symbolHeight = 80;
const symbolWidth = 80;
const symbolMargin = { left: 12, right: 12, top: 12, bottom: 12 }
const palettegetNodeDefaults = (symbol) => {
symbol.width = 100;
symbol.height = 100;
}
const getSymbolInfo = (symbol) => {
//Sets the description for symbols
return { fit: true, description: { text: symbol.id, } };
}
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-diagrams/styles/material.css";
</style><template>
<div id="app">
<ejs-symbolpalette id="symbolpalette" :palettes='palettes' :width='palettewidth' :height='paletteheight'
:symbolMargin='symbolMargin' :getNodeDefaults='palettegetNodeDefaults' :symbolHeight='symbolHeight'
:symbolWidth='symbolWidth' :getSymbolInfo='getSymbolInfo'>
</ejs-symbolpalette>
</div>
</template>
<script>
import { SymbolPaletteComponent } from '@syncfusion/ej2-vue-diagrams';
let umlShapes = [
{
id: 'class',
style: {
fill: '#26A0DA',
},
borderColor: 'white',
shape: {
type: 'UmlClassifier',
classShape: {
attributes: [
{ name: 'accepted', type: 'Date', style: { color: "red", fontFamily: "Arial", textDecoration: 'Underline', italic: true }, isSeparator: true },
],
methods: [{ name: 'getHistory', style: {}, parameters: [{ name: 'Date', style: {} }], type: 'History' }],
name: 'Patient'
},
classifier: 'Class'
},
},
{
id: 'Interface',
style: {
fill: '#26A0DA',
}, borderColor: 'white',
shape: {
type: 'UmlClassifier',
interfaceShape: {
name: "Bank Account",
},
classifier: 'Interface'
},
},
{
id: 'Enumeration',
style: {
fill: '#26A0DA',
}, borderColor: 'white',
shape: {
type: 'UmlClassifier',
enumerationShape: {
name: 'AccountType',
members: [
{
name: 'Checking Account', style: {}
},
]
},
classifier: 'Enumeration'
},
},
];
export default {
name: "App",
components: {
"ejs-symbolpalette": SymbolPaletteComponent
},
data() {
return {
//Defines the palette collection
palettes: [{
id: 'uml',
expanded: true,
symbols: umlShapes,
title: 'UML Shapes',
},
],
palettewidth: "100%",
paletteheight: "700px",
symbolHeight: 80,
symbolWidth: 80,
symbolMargin: { left: 12, right: 12, top: 12, bottom: 12 },
palettegetNodeDefaults: (symbol) => {
symbol.width = 100;
symbol.height = 100;
},
getSymbolInfo: (symbol) => {
//Sets the description for symbols
return { fit: true, description: { text: symbol.id, } };
}
};
}
}
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-diagrams/styles/material.css";
</style>Tooltip for symbols in symbol palette
The Symbol palette supports displaying tooltips when mouse hovers over the symbols. You can customize the tooltip for each symbol in the symbol palette.
Default tooltip for symbols
When hovering over symbols in the symbol palette, the default tooltip displays the symbol’s ID.
Refer to the image below for an illustration of the tooltip behavior in the symbol palette.
Custom tooltip for symbols
To customize the tooltips for symbols in the symbol palette, assign a custom tooltip to the ‘Tooltip’ content property of each symbol. Once you define the custom tooltip, enable the Tooltip constraints for each symbol, ensuring that the tooltips are displayed when users hover over them.
Here, the code provided below demonstrates how to define tooltip content to symbols within a symbol palette.
<template>
<div id="app">
<ejs-symbolpalette id="symbolpalette" :palettes='palettes' :width='palettewidth' :height='paletteheight'
:symbolMargin='symbolMargin' :getNodeDefaults='palettegetNodeDefaults' :symbolHeight='symbolHeight'
:symbolWidth='symbolWidth' :getSymbolInfo='getSymbolInfo'>
</ejs-symbolpalette>
</div>
</template>
<script setup>
import { SymbolPaletteComponent as EjsSymbolpalette } from '@syncfusion/ej2-vue-diagrams';
let umlShapes = [
{
id: 'class',
style: {
fill: '#26A0DA',
},
borderColor: 'white',
shape: {
type: 'UmlClassifier',
classShape: {
attributes: [
{ name: 'accepted', type: 'Date', style: { color: "red", fontFamily: "Arial", textDecoration: 'Underline', italic: true }, isSeparator: true },
],
methods: [{ name: 'getHistory', style: {}, parameters: [{ name: 'Date', style: {} }], type: 'History' }],
name: 'Patient'
},
classifier: 'Class'
},
},
{
id: 'Interface',
style: {
fill: '#26A0DA',
}, borderColor: 'white',
shape: {
type: 'UmlClassifier',
interfaceShape: {
name: "Bank Account",
},
classifier: 'Interface'
},
},
{
id: 'Enumeration',
style: {
fill: '#26A0DA',
}, borderColor: 'white',
shape: {
type: 'UmlClassifier',
enumerationShape: {
name: 'AccountType',
members: [
{
name: 'Checking Account', style: {}
},
]
},
classifier: 'Enumeration'
},
},
];
//Defines the palette collection
const palettes = [{
id: 'uml',
expanded: true,
symbols: umlShapes,
title: 'UML Shapes',
}];
const palettewidth = "100%";
const paletteheight = "700px";
const symbolHeight = 80;
const symbolWidth = 80;
const symbolMargin = { left: 12, right: 12, top: 12, bottom: 12 }
const palettegetNodeDefaults = (symbol) => {
symbol.width = 100;
symbol.height = 100;
}
const getSymbolInfo = (symbol) => {
//Sets the description for symbols
return { fit: true, description: { text: symbol.id, } };
}
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-diagrams/styles/material.css";
</style><template>
<div id="app">
<ejs-symbolpalette id="symbolpalette" :palettes='palettes' :width='palettewidth' :height='paletteheight'
:symbolMargin='symbolMargin' :getNodeDefaults='palettegetNodeDefaults' :symbolHeight='symbolHeight'
:symbolWidth='symbolWidth' :getSymbolInfo='getSymbolInfo'>
</ejs-symbolpalette>
</div>
</template>
<script>
import { SymbolPaletteComponent } from '@syncfusion/ej2-vue-diagrams';
let umlShapes = [
{
id: 'class',
style: {
fill: '#26A0DA',
},
borderColor: 'white',
shape: {
type: 'UmlClassifier',
classShape: {
attributes: [
{ name: 'accepted', type: 'Date', style: { color: "red", fontFamily: "Arial", textDecoration: 'Underline', italic: true }, isSeparator: true },
],
methods: [{ name: 'getHistory', style: {}, parameters: [{ name: 'Date', style: {} }], type: 'History' }],
name: 'Patient'
},
classifier: 'Class'
},
},
{
id: 'Interface',
style: {
fill: '#26A0DA',
}, borderColor: 'white',
shape: {
type: 'UmlClassifier',
interfaceShape: {
name: "Bank Account",
},
classifier: 'Interface'
},
},
{
id: 'Enumeration',
style: {
fill: '#26A0DA',
}, borderColor: 'white',
shape: {
type: 'UmlClassifier',
enumerationShape: {
name: 'AccountType',
members: [
{
name: 'Checking Account', style: {}
},
]
},
classifier: 'Enumeration'
},
},
];
export default {
name: "App",
components: {
"ejs-symbolpalette": SymbolPaletteComponent
},
data() {
return {
//Defines the palette collection
palettes: [{
id: 'uml',
expanded: true,
symbols: umlShapes,
title: 'UML Shapes',
},
],
palettewidth: "100%",
paletteheight: "700px",
symbolHeight: 80,
symbolWidth: 80,
symbolMargin: { left: 12, right: 12, top: 12, bottom: 12 },
palettegetNodeDefaults: (symbol) => {
symbol.width = 100;
symbol.height = 100;
},
getSymbolInfo: (symbol) => {
//Sets the description for symbols
return { fit: true, description: { text: symbol.id, } };
}
};
}
}
</script>
<style>
@import "../node_modules/@syncfusion/ej2-vue-diagrams/styles/material.css";
</style>How to provide different tooltip for Symbol palette and diagram elements.
Differentiate the tooltips between symbols in the symbol palette and dropped nodes by utilizing the dragEnter event. When a custom tooltip is defined for a symbol, it will be displayed for both the symbol and the dropped node in the diagram canvas. However, to provide distinct tooltips for symbols in the palette and dropped nodes, capture the dragEnter event and assign specific tooltips dynamically.
When a symbol is dragged from the symbol palette and enters the diagram canvas, the [DragEnter] IDragEnterEventArgs event is triggered. Within this event, you can define a new tooltip for the dropped node. By assigning custom tooltip content to the Tooltip property of the node, you can provide a distinct tooltip that is specific to the dropped node.
The following image illustrates the differentiation of tooltips displayed in the Symbol Palette and the Diagram.
The following code snippet will demonstrate how to define two different tooltip for symbol in the symbol palette and dropped node in the diagram canvas.
let diagram: Diagram = new Diagram({
width: '100%', height: '500px',
connectors: connectors, nodes: nodes,
//event to change tooltip content while dragging symbols into Diagram
dragEnter: dragEnter,
});
diagram.appendTo('#diagram');
function dragEnter(args:IDragEnterEventArgs)
{
//enable tooltip connstraints for the dragged symbol
args.dragItem.constraints = NodeConstraints.Default | NodeConstraints.Tooltip;
//change the tooltip content of the dragged symbol
args.dragItem.tooltip.content='This is Diagram Tooltip';
}Palette Interaction
Palette interaction notifies the element enter, leave, and dragging of the symbols into the diagram.
DragEnter
[DragEnter] IDragEnterEventArgs notifies when the element enter into the diagram from symbol palette.
DragLeave
[DragLeave] IDragLeaveEventArgs notifies when the element leaves from the diagram.
DragOver
[DragOver] IDragOverEventArgs notifies when an element drag over another diagram element.
Note: The diagram provides support to cancel the drag and drop operation from the symbol palette to the diagram when the ESC key is pressed.