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="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="../release/go.js"></script>
<script src="../assets/js/goSamples.js"></script> <!-- this is only for the GoJS Samples framework -->
<script src="LocalStorageCommandHandler.js"></script>
<script id="code">
function init() {
if (window.goSamples) goSamples(); // init for these samples -- you don't need to call this
var $ = go.GraphObject.make; // for conciseness in defining templates
myDiagram = $(go.Diagram, "myDiagramDiv", // create a Diagram for the DIV HTML element
{
commandHandler: new LocalStorageCommandHandler(), // defined in DrawCommandHandler.js
"undoManager.isEnabled": true // enable undo & redo
});
myDiagram2 = $(go.Diagram, "myDiagramDiv2", // create a Diagram for the DIV HTML element
{
commandHandler: new LocalStorageCommandHandler(), // defined in DrawCommandHandler.js
"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" }
]);
}
</script>
</head>
<body onload="init()">
<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.js">LocalStorageCommandHandler.js</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>
</body>
</html>