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>Simulating Input Events</title>
<meta name="description" content="Test a diagram by simulating abstract input events." />
<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="Robot.js"></script>
<script id="code">
var robot; // this global variable will hold an instance of the Robot class for myDiagram
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
function showProperties(e, obj) { // executed by ContextMenuButton
var node = obj.part.adornedPart;
var msg = "Context clicked: " + node.data.key + ". ";
msg += "Selection includes:";
myDiagram.selection.each(function(part) {
msg += " " + part.toString();
});
document.getElementById("myStatus").textContent = msg;
}
function nodeClicked(e, obj) { // executed by click and doubleclick handlers
var evt = e.copy();
var node = obj.part;
var type = evt.clickCount === 2 ? "Double-Clicked: " : "Clicked: ";
var msg = type + node.data.key + ". ";
document.getElementById("myStatus").textContent = msg;
}
myDiagram =
$(go.Diagram, "myDiagramDiv", // must name or refer to the DIV HTML element
{
nodeTemplate:
$(go.Node, "Auto",
{
click: nodeClicked,
doubleClick: nodeClicked,
contextMenu:
$("ContextMenu",
$("ContextMenuButton",
$(go.TextBlock, "Properties"),
{ click: showProperties })
)
},
$(go.Shape, "Rectangle",
{ fill: "lightgray" },
{ portId: "", fromLinkable: true, toLinkable: true, cursor: "pointer" }),
$(go.TextBlock,
{ margin: 3 },
new go.Binding("text", "key"))),
model: new go.GraphLinksModel([
{ key: "Lambda" },
{ key: "Mu" }
], [
{ from: "Lambda", to: "Mu" }
]),
"undoManager.isEnabled": true
});
// a shared Robot that can be used by all commands for this one Diagram
robot = new Robot(myDiagram); // defined in Robot.js
// initialize the Palette that is on the left side of the page
myPalette =
$(go.Palette, "myPaletteDiv", // must name or refer to the DIV HTML element
{
nodeTemplate: myDiagram.nodeTemplate,
model: new go.GraphLinksModel([ // specify the contents of the Palette
{ key: "Alpha" },
{ key: "Beta" },
{ key: "Gamma" },
{ key: "Delta" }
])
});
}
function dragFromPalette() {
// simulate a drag-and-drop between Diagrams:
var dragdrop = { sourceDiagram: myPalette, targetDiagram: myDiagram };
robot.mouseDown(5, 5, 0, dragdrop); // this should be where the Alpha node is in the source myPalette
robot.mouseMove(60, 60, 100, dragdrop);
robot.mouseUp(100, 100, 200, dragdrop); // this is where the node will be dropped in the target myDiagram
// If successful in dragging a node from the Palette into the Diagram,
// the DraggingTool will perform a transaction.
}
function copyNode() {
var alpha = myDiagram.findNodeForKey("Alpha");
if (alpha === null) return;
var loc = alpha.actualBounds.center;
var options = { control: true, alt: true };
// Simulate a mouse drag to move the Alpha node:
robot.mouseDown(loc.x, loc.y, 0, options);
robot.mouseMove(loc.x + 80, loc.y + 50, 50, options);
robot.mouseMove(loc.x + 20, loc.y + 100, 100, options);
robot.mouseUp(loc.x + 20, loc.y + 100, 150, options);
// If successful, will have made a copy of the "Alpha" node below it.
// Alternatively you could copy the Node using commands:
// myDiagram.commandHandler.copySelection();
// myDiagram.commandHandler.pasteSelection(new go.Point(loc.x+20, loc.y+100));
}
function dragSelectNodes() {
var alpha = myDiagram.findNodeForKey("Alpha");
if (alpha === null) return;
var alpha2 = myDiagram.findNodeForKey("Alpha2");
if (alpha2 === null) return;
var coll = new go.Set();
coll.add(alpha);
coll.add(alpha2);
var area = myDiagram.computePartsBounds(coll);
area.inflate(30, 30);
// Simulate dragging in the background around the two Alpha nodes.
// This uses timestamps to pretend to wait a while to avoid activating the PanningTool.
// Hopefully this mouse down does not hit any Part, but in the Diagram's background:
robot.mouseDown(area.x, area.y, 0);
// NOTE that this mouseMove timestamp needs to be > myDiagram.toolManager.dragSelectingTool.delay:
robot.mouseMove(area.centerX, area.centerY, 200);
robot.mouseUp(area.right, area.bottom, 250);
// Now should have selected both "Alpha" and "Alpha2" using the DragSelectingTool.
// Alternatively you could select the Nodes programmatically:
// alpha.isSelected = true;
// alpha2.isSelected = true;
}
function clickContextMenu() {
var alpha = myDiagram.findNodeForKey("Alpha");
if (alpha === null) return;
var loc = alpha.location;
// right click on Alpha
robot.mouseDown(loc.x + 10, loc.y + 10, 0, { right: true });
robot.mouseUp(loc.x + 10, loc.y + 10, 100, { right: true });
// Alternatively you could invoke the Show Context Menu command directly:
// myDiagram.commandHandler.showContextMenu(alpha);
// move mouse over first context menu button
robot.mouseMove(loc.x + 20, loc.y + 20, 200);
// and click that button
robot.mouseDown(loc.x + 20, loc.y + 20, 300);
robot.mouseUp(loc.x + 20, loc.y + 20, 350);
// This should have invoked the ContextMenuButton's click function, showProperties,
// which should have put a green message in the myStatus DIV.
}
function deleteSelection() {
// Simulate clicking the "Del" key:
robot.keyDown("Del");
robot.keyUp("Del");
// Now the selected Nodes are deleted.
// Alternatively you could invoke the Delete command directly:
// myDiagram.commandHandler.deleteSelection();
}
function clickLambda() {
var lambda = myDiagram.findNodeForKey("Lambda");
if (lambda === null) return;
var loc = lambda.location;
// click on Lambda
robot.mouseDown(loc.x + 10, loc.y + 10, 0, {});
robot.mouseUp(loc.x + 10, loc.y + 10, 100, {});
// Clicking is just a sequence of input events.
// There is no command in CommandHandler for such a basic gesture.
}
function doubleClickLambda() {
var lambda = myDiagram.findNodeForKey("Lambda");
if (lambda === null) return;
var loc = lambda.location;
// double-click on Lambda
robot.mouseDown(loc.x + 10, loc.y + 10, 0, {});
robot.mouseUp(loc.x + 10, loc.y + 10, 100, {});
robot.mouseDown(loc.x + 10, loc.y + 10, 200, { clickCount: 2 });
robot.mouseUp(loc.x + 10, loc.y + 10, 300, { clickCount: 2 });
}
</script>
</head>
<body onload="init()">
<div id="sample">
<div style="width: 100%; display: flex; justify-content: space-between">
<div id="myPaletteDiv" style="width: 80px; height: 400px; margin-right: 2px; border: solid 1px black"></div>
<div id="myDiagramDiv" style="flex-grow: 1; height: 400px; border: solid 1px black"></div>
</div>
<p>
To simulate mouse events the buttons below use the <b>Robot</b> class that is defined in <a href="Robot.js">Robot.js</a>.
</p>
<p>
Click these buttons in order from top to bottom:<br />
<button onclick="dragFromPalette()">Drag From Palette</button><br />
<button onclick="copyNode()">Copy Node</button><br />
<button onclick="dragSelectNodes()">Drag Select Nodes</button><br />
<button onclick="clickContextMenu()">Context Menu Click Alpha</button><br />
<button onclick="deleteSelection()">Delete</button><br />
</p>
<p>Clicking operations:<br />
<button onclick="clickLambda()">Click Lambda</button><br />
<button onclick="doubleClickLambda()">Double Click Lambda</button><br />
</p>
<p>
The <a>UndoManager</a> has been enabled in the main Diagram.
Give focus to the Diagram and you can undo everything and then redo everything to confirm what was executed by the Robot.
</p>
<div id="myStatus" style="color:green"></div>
</div>
</body>
</html>