gojs
Version:
Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams
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HTML
<html>
<head>
<meta charset="UTF-8">
<title>Local Storage Commands</title>
<meta name="description" content="TypeScript: The LocalStorageCommandHandler extension enhances the copy and paste commands to use 'localStorage' as the storage mechanism." />
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- Copyright 1998-2020 by Northwoods Software Corporation. -->
<script src="../assets/js/goSamples.js"></script> <!-- this is only for the GoJS Samples framework -->
</head>
<body>
<div id="sample">
<span style="display: inline-block; vertical-align: top;">
<div id="myDiagramDiv" style="border: solid 1px black; width:300px; height:300px"></div>
</span>
<span style="display: inline-block; vertical-align: top;">
<div id="myDiagramDiv2" style="border: solid 1px black; width:300px; height:300px"></div>
</span>
<p>
This example demonstrates a custom <a>CommandHandler</a>.
It uses localStorage as the repository for the clipboard, rather than an in-memory global variable.
It is defined in its own file, as <a href="LocalStorageCommandHandler.ts">LocalStorageCommandHandler.ts</a>.
</p>
<p>
Try copying and pasting between the above Diagrams, or between tabs/windows that contain Diagrams using LocalStorageCommandHandler.
Note that when copying and pasting between Diagrams, it will work best if they have similar templates.
</p>
</div>
<script type="module" id="code">
import * as go from "../release/go-module.js";
import { LocalStorageCommandHandler } from './LocalStorageCommandHandler.js';
if (window.goSamples) window.goSamples(); // init for these samples -- you don't need to call this
const $ = go.GraphObject.make; // for conciseness in defining templates
const myDiagram = $(go.Diagram, 'myDiagramDiv', // create a Diagram for the DIV HTML element
{
commandHandler: new LocalStorageCommandHandler(),
'undoManager.isEnabled': true // enable undo & redo
});
const myDiagram2 = $(go.Diagram, 'myDiagramDiv2', // create a Diagram for the DIV HTML element
{
commandHandler: new LocalStorageCommandHandler(),
'undoManager.isEnabled': true // enable undo & redo
});
// define a simple Node template
myDiagram.nodeTemplate =
$(go.Node, 'Auto', // the Shape will go around the TextBlock
$(go.Shape, 'RoundedRectangle', { strokeWidth: 0 },
// Shape.fill is bound to Node.data.color
new go.Binding('fill', 'color')), $(go.TextBlock, { margin: 8 }, // some room around the text
// TextBlock.text is bound to Node.data.key
new go.Binding('text', 'key')));
myDiagram2.nodeTemplate = myDiagram.nodeTemplate;
// create the model data that will be represented by Nodes and Links
myDiagram.model = new go.GraphLinksModel([
{ key: 'Alpha', color: 'lightblue' },
{ key: 'Beta', color: 'orange' },
{ key: 'Gamma', color: 'lightgreen' },
{ key: 'Delta', color: 'pink' }
], [
{ from: 'Alpha', to: 'Beta' },
{ from: 'Alpha', to: 'Gamma' },
{ from: 'Beta', to: 'Beta' },
{ from: 'Gamma', to: 'Delta' },
{ from: 'Delta', to: 'Alpha' }
]);
myDiagram2.model = new go.GraphLinksModel([
{ key: 'Alpha', color: 'lightblue' },
{ key: 'Beta', color: 'orange' },
{ key: 'Gamma', color: 'lightgreen' },
{ key: 'Delta', color: 'pink' }
], [
{ from: 'Alpha', to: 'Beta' },
{ from: 'Alpha', to: 'Gamma' },
{ from: 'Beta', to: 'Beta' },
{ from: 'Gamma', to: 'Delta' },
{ from: 'Delta', to: 'Alpha' }
]);
window.myDiagram = myDiagram; // Attach to the window for console debugging
window.myDiagram2 = myDiagram2;
</script>
</body>
</html>