179 lines
7.1 KiB
TypeScript
179 lines
7.1 KiB
TypeScript
"use strict";
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/*
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* Copyright (C) 1998-2017 by Northwoods Software Corporation. All Rights Reserved.
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*/
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import * as go from "../release/go";
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import { SnapLinkReshapingTool } from "./SnapLinkReshapingTool"
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var myDiagram: go.Diagram;
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var myPalette: go.Diagram;
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export function init() {
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if (typeof (<any>window)["goSamples"] === 'function') (<any>window)["goSamples"](); // init for these samples -- you don't need to call this
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const $ = go.GraphObject.make; // for conciseness in defining templates
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myDiagram =
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$(go.Diagram, "myDiagramDiv", // must name or refer to the DIV HTML element
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{
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initialContentAlignment: go.Spot.Center,
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// supply a simple narrow grid that manually reshaped link routes will follow
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grid: $(go.Panel, "Grid",
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{ gridCellSize: new go.Size(8, 8) },
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$(go.Shape, "LineH", { stroke: "lightgray", strokeWidth: 0.5 }),
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$(go.Shape, "LineV", { stroke: "lightgray", strokeWidth: 0.5 })
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),
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allowDrop: true, // must be true to accept drops from the Palette
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"draggingTool.isGridSnapEnabled": true,
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linkReshapingTool: $(SnapLinkReshapingTool),
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// when the user reshapes a Link, change its Link.routing from AvoidsNodes to Orthogonal,
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// so that combined with Link.adjusting == End the link will retain its reshaped mid points
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// even after nodes are moved
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"LinkReshaped": (e: go.DiagramEvent) => { e.subject.routing = go.Link.Orthogonal; },
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"animationManager.isEnabled": false,
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"undoManager.isEnabled": true
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});
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// when the document is modified, add a "*" to the title and enable the "Save" button
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myDiagram.addDiagramListener("Modified", (e) => {
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var button = (document.getElementById("SaveButton") as any);
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if (button) button.disabled = !myDiagram.isModified;
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var idx = document.title.indexOf("*");
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if (myDiagram.isModified) {
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if (idx < 0) document.title += "*";
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} else {
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if (idx >= 0) document.title = document.title.substr(0, idx);
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}
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});
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// Define a function for creating a "port" that is normally transparent.
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// The "name" is used as the GraphObject.portId, the "spot" is used to control how links connect
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// and where the port is positioned on the node, and the boolean "output" and "input" arguments
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// control whether the user can draw links from or to the port.
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function makePort(name: string, spot: go.Spot, output: boolean, input: boolean) {
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// the port is basically just a small transparent square
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return $(go.Shape, "Circle",
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{
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fill: null, // not seen, by default; set to a translucent gray by showSmallPorts, defined below
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stroke: null,
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desiredSize: new go.Size(7, 7),
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alignment: spot, // align the port on the main Shape
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alignmentFocus: spot, // just inside the Shape
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portId: name, // declare this object to be a "port"
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fromSpot: spot, toSpot: spot, // declare where links may connect at this port
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fromLinkable: output, toLinkable: input, // declare whether the user may draw links to/from here
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cursor: "pointer" // show a different cursor to indicate potential link point
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});
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}
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myDiagram.nodeTemplate =
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$(go.Node, "Spot",
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{ locationSpot: go.Spot.Center },
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new go.Binding("location", "loc", go.Point.parse).makeTwoWay(go.Point.stringify),
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{ selectable: true },
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{ resizable: true, resizeObjectName: "PANEL" },
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// the main object is a Panel that surrounds a TextBlock with a Shape
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$(go.Panel, "Auto",
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{ name: "PANEL" },
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new go.Binding("desiredSize", "size", go.Size.parse).makeTwoWay(go.Size.stringify),
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$(go.Shape, "Rectangle", // default figure
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{
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portId: "", // the default port: if no spot on link data, use closest side
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fromLinkable: true, toLinkable: true, cursor: "pointer",
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fill: "white" // default color
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},
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new go.Binding("figure"),
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new go.Binding("fill")),
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$(go.TextBlock,
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{
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font: "bold 11pt Helvetica, Arial, sans-serif",
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margin: 8,
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maxSize: new go.Size(160, NaN),
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wrap: go.TextBlock.WrapFit,
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editable: true
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},
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new go.Binding("text").makeTwoWay())
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),
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// four small named ports, one on each side:
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makePort("T", go.Spot.Top, false, true),
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makePort("L", go.Spot.Left, true, true),
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makePort("R", go.Spot.Right, true, true),
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makePort("B", go.Spot.Bottom, true, false),
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{ // handle mouse enter/leave events to show/hide the ports
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mouseEnter: (e: go.InputEvent, node: go.Node) => { showSmallPorts(node, true); },
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mouseLeave: (e: go.InputEvent, node: go.Node) => { showSmallPorts(node, false); }
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}
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);
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function showSmallPorts(node: go.Node, show: boolean) {
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node.ports.each(function (port: go.Shape) {
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if (port.portId !== "") { // don't change the default port, which is the big shape
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port.fill = show ? "rgba(0,0,0,.3)" : null;
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}
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});
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}
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myDiagram.linkTemplate =
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$(go.Link, // the whole link panel
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{ relinkableFrom: true, relinkableTo: true, reshapable: true, resegmentable: true },
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{
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routing: go.Link.AvoidsNodes, // but this is changed to go.Link.Orthgonal when the Link is reshaped
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adjusting: go.Link.End,
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curve: go.Link.JumpOver,
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corner: 5,
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toShortLength: 4
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},
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new go.Binding("points").makeTwoWay(),
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// remember the Link.routing too
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new go.Binding("routing", "routing", go.Binding.parseEnum(go.Link, go.Link.AvoidsNodes))
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.makeTwoWay(go.Binding.toString),
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$(go.Shape, // the link path shape
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{ isPanelMain: true, strokeWidth: 2 }),
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$(go.Shape, // the arrowhead
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{ toArrow: "Standard", stroke: null })
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);
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load(); // load an initial diagram from some JSON text
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var link = myDiagram.links.first();
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if (link) link.isSelected = true;
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// initialize the Palette that is on the left side of the page
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myPalette =
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$(go.Palette, "myPaletteDiv", // must name or refer to the DIV HTML element
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{
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maxSelectionCount: 1,
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nodeTemplateMap: myDiagram.nodeTemplateMap, // share the templates used by myDiagram
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model: new go.GraphLinksModel([ // specify the contents of the Palette
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{ text: "Start", figure: "Circle", fill: "green" },
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{ text: "Step" },
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{ text: "DB", figure: "Database", fill: "lightgray" },
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{ text: "???", figure: "Diamond", fill: "lightskyblue" },
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{ text: "End", figure: "Circle", fill: "red" },
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{ text: "Comment", figure: "RoundedRectangle", fill: "lightyellow" }
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])
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});
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}
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// Show the diagram's model in JSON format that the user may edit
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export function save() {
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saveDiagramProperties(); // do this first, before writing to JSON
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(document.getElementById("mySavedModel") as any).value = myDiagram.model.toJson();
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myDiagram.isModified = false;
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}
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export function load() {
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myDiagram.model = go.Model.fromJson((document.getElementById("mySavedModel") as any).value);
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loadDiagramProperties();
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}
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function saveDiagramProperties() {
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myDiagram.model.modelData.position = go.Point.stringify(myDiagram.position);
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}
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// Called by "InitialLayoutCompleted" DiagramEvent listener, NOT directly by load()!
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function loadDiagramProperties() {
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// set Diagram.initialPosition, not Diagram.position, to handle initialization side-effects
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var pos = myDiagram.model.modelData.position;
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if (pos) myDiagram.initialPosition = go.Point.parse(pos);
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} |