markgojs/extensionsTS/LinkLabelOnPathDraggingScript.ts

Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams

"use strict";
/*
*  Copyright (C) 1998-2019 by Northwoods Software Corporation. All Rights Reserved.
*/

import * as go from "../release/go";
import { LinkLabelOnPathDraggingTool } from "./LinkLabelOnPathDraggingTool";

export function init() {
	if (typeof (<any>window)["goSamples"] === 'function') (<any>window)["goSamples"]();  // init for these samples -- you don't need to call this

	const $ = go.GraphObject.make;

  let myDiagram =
		$(go.Diagram, "myDiagramDiv", // the ID of the DIV HTML element
			{
        initialContentAlignment: go.Spot.Center,
			  layout: $(go.ForceDirectedLayout,
					{ defaultSpringLength: 50, defaultElectricalCharge: 50 }),
				"undoManager.isEnabled": true
			});

	// install the LinkLabelDraggingTool as a "mouse move" tool
	myDiagram.toolManager.mouseMoveTools.insertAt(0, new LinkLabelOnPathDraggingTool());

	myDiagram.nodeTemplate =
		$(go.Node, go.Panel.Auto,
			{ locationSpot: go.Spot.Center },
			$(go.Shape,
				{
					fill: "orange",  // default fill color
					portId: "",
					fromLinkable: true,
					fromSpot: go.Spot.AllSides,
					toLinkable: true,
					toSpot: go.Spot.AllSides,
					cursor: "pointer"
				},
				new go.Binding("fill", "color")),
			$(go.TextBlock,
				{ margin: 10, font: "bold 12pt sans-serif" },
				new go.Binding("text"))
		);

	myDiagram.linkTemplate =
		$(go.Link,
			{
				routing: go.Link.AvoidsNodes,
				corner: 5,
				relinkableFrom: true,
				relinkableTo: true,
				reshapable: true,
				resegmentable: true
			},
			$(go.Shape),
			$(go.Shape, { toArrow: "OpenTriangle" }),
			$(go.Panel, "Auto",
				{ _isLinkLabel: true },  // marks this Panel as being a draggable label
				$(go.Shape, { fill: "white" }),
				$(go.TextBlock, "?", { margin: 3 },
					new go.Binding("text", "color")),
				// remember any modified segment properties in the link data object
				new go.Binding("segmentIndex").makeTwoWay(),
				new go.Binding("segmentFraction").makeTwoWay()
			)
		);

	// create a few nodes and links
	myDiagram.model = new go.GraphLinksModel([
		{ key: 1, text: "one", color: "lightyellow" },
		{ key: 2, text: "two", color: "brown" },
		{ key: 3, text: "three", color: "green" },
		{ key: 4, text: "four", color: "slateblue" },
		{ key: 5, text: "five", color: "aquamarine" },
		{ key: 6, text: "six", color: "lightgreen" },
		{ key: 7, text: "seven" }
	], [
			{ from: 5, to: 6, color: "orange" },
			{ from: 1, to: 2, color: "red" },
			{ from: 1, to: 3, color: "blue" },
			{ from: 1, to: 4, color: "goldenrod" },
			{ from: 2, to: 5, color: "fuchsia" },
			{ from: 3, to: 5, color: "green" },
			{ from: 4, to: 5, color: "black" },
			{ from: 6, to: 7 }
		]);
}