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>Realtime Drag Selecting Tool</title>
<meta name="description" content="This customized DragSelectingTool selects and deselects parts continuously while the user is dragging a box, rather than when the tool finishes." />
<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="RealtimeDragSelectingTool.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",
{
initialDocumentSpot: go.Spot.Center,
initialViewportSpot: go.Spot.Center,
// replace the standard DragSelectingTool with one that selects while dragging,
// and also only requires overlapping bounds with the dragged box to be selected
dragSelectingTool:
$(RealtimeDragSelectingTool,
{ isPartialInclusion: true, delay: 50 },
{
box: $(go.Part, // replace the magenta box with a red one
{ layerName: "Tool", selectable: false },
$(go.Shape,
{
name: "SHAPE", fill: "rgba(255,0,0,0.1)",
stroke: "red", strokeWidth: 2
}))
}
),
// Define the template for Nodes, just some text inside a colored rectangle
nodeTemplate:
$(go.Node, "Spot",
{ width: 70, height: 20 },
$(go.Shape, "Rectangle",
new go.Binding("fill", "c")),
$(go.TextBlock,
{ margin: 2 },
new go.Binding("text", "c"))),
// Define the template for Links, just a simple line
linkTemplate:
$(go.Link,
$(go.Shape, { stroke: "black" })),
layout: $(go.TreeLayout)
});
myDiagram.model = loadTree();
}
function loadTree() {
// create some tree data
var total = 49;
var treedata = [];
for (var i = 0; i < total; i++) {
// these property names are also specified when creating the TreeModel
var d = {
key: i, // this node data's key
c: go.Brush.randomColor(), // the node's color
parent: (i > 0 ? Math.floor(Math.random() * i / 2) : undefined) // the random parent's key
};
treedata.push(d);
}
return new go.TreeModel(treedata);
}
</script>
</head>
<body onload="init()">
<div id="sample">
<div id="myDiagramDiv" style="background-color: white; border: solid 1px black; width: 100%;height: 600px"></div>
<p>
This sample demonstrates the RealtimeDragSelectingTool, which replaces the standard <a>DragSelectingTool</a>.
Press in the background, wait briefly, and then drag to start selecting Nodes or Links that intersect with the box.
You can press or release Control (Command on Mac) or Shift while dragging to see how the selection changes.
</p>
<p>
Load it in your own app by including <a href="RealtimeDragSelectingTool.js">RealtimeDragSelectingTool.js</a>.
Initialize your Diagram by setting <a>ToolManager.dragSelectingTool</a> to a new instance of this tool.
For example:
</p>
<pre>
myDiagram.toolManager.dragSelectingTool = new RealtimeDragSelectingTool();
</pre>
or
<pre>
$(go.Diagram, { . . .,
"toolManager.dragSelectingTool": $(RealtimeDragSelectingTool, { isPartialInclusion: true }),
. . . })
</pre>
</div>
</body>
</html>