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261 lines
13 KiB
HTML
Executable File
261 lines
13 KiB
HTML
Executable File
<!DOCTYPE html>
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<html>
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<head>
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<title>Table Layout</title>
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<!-- Copyright 1998-2020 by Northwoods Software Corporation. -->
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<meta name="description" content="TypeScript: Use the TableLayout extension to arrange nodes in a tabular or grid-like form." />
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<script src="../assets/js/goSamples.js"></script> <!-- this is only for the GoJS Samples framework -->
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</head>
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<body>
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<div id="sample">
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<div style="width: 100%; display: flex; justify-content: space-between">
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<div id="myPaletteDiv" style="width: 120px; height: 600px; margin-right: 2px; border: solid 1px black"></div>
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<div id="myDiagramDiv" style="flex-grow: 1; height: 600px; border: solid 1px black"></div>
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</div>
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<p>
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This sample demonstrates a custom Layout, TableLayout, that is very much like a simplified "Table" Panel layout, but working
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on non-Link Parts in a Diagram or a Group rather than on GraphObjects in a Panel. The layout is defined in its own
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file, as <a href="TableLayout.ts">TableLayout.ts</a>.
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</p>
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<p>
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You can drag-and-drop nodes from the Palette into any Group. Dragging into a Group highlights the Group. Drops must occur
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inside Groups; otherwise the action is cancelled.
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</p>
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<p>
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Each row and each column is <a>Part.resizable</a> and has a custom <a>Part.resizeAdornmentTemplate</a> showing a single
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resize handle on the right side or on the bottom. There is a custom LaneResizingTool to provide a minimum width or
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height based on the contents of all of the groups (cells) in that column or row.
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</p>
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<p>
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This example assumes the Groups are predefined and exist in each cell at a particular row/column, but this sample could be
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extended to allow adding and removing rows and/or columns.
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</p>
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</div>
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<script type="module" id="code">
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import * as go from "../release/go-module.js";
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import { TableLayout } from './TableLayout.js';
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if (window.goSamples) goSamples(); // init for the 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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// define a custom ResizingTool to limit how far one can shrink a row or column
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class LaneResizingTool extends go.ResizingTool {
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computeMinSize() {
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const diagram = this.diagram;
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if (this.adornedObject === null)
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return new go.Size();
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const lane = this.adornedObject.part; // might be row or column
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if (lane === null)
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return new go.Size();
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const horiz = (lane.category === 'Column Header'); // or "Row Header"
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const margin = diagram.nodeTemplate.margin;
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let bounds = new go.Rect();
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diagram.findTopLevelGroups().each((g) => {
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if (lane === null)
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return;
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if (horiz ? (g.column === lane.column) : (g.row === lane.row)) {
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const b = diagram.computePartsBounds(g.memberParts);
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if (b.isEmpty())
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return; // nothing in there? ignore it
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b.unionPoint(g.location); // keep any empty space on the left and top
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b.addMargin(margin); // assume the same node margin applies to all nodes
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if (bounds.isEmpty()) {
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bounds = b;
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}
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else {
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bounds.unionRect(b);
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}
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}
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});
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// limit the result by the standard value of computeMinSize
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const msz = super.computeMinSize();
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if (bounds.isEmpty())
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return msz;
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return new go.Size(Math.max(msz.width, bounds.width), Math.max(msz.height, bounds.height));
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}
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resize(newr) {
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const diagram = this.diagram;
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if (this.adornedObject === null)
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return;
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const lane = this.adornedObject.part;
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if (lane === null)
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return;
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const horiz = (lane.category === 'Column Header');
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const lay = diagram.layout; // the TableLayout
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if (horiz) {
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const col = lane.column;
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const coldef = lay.getColumnDefinition(col);
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coldef.width = newr.width;
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}
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else {
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const row = lane.row;
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const rowdef = lay.getRowDefinition(row);
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rowdef.height = newr.height;
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}
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lay.invalidateLayout();
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}
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}
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const myDiagram = $(go.Diagram, 'myDiagramDiv', {
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layout: $(TableLayout, $(go.RowColumnDefinition, { row: 1, height: 22 }), // fixed size column headers
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$(go.RowColumnDefinition, { column: 1, width: 22 }) // fixed size row headers
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),
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'SelectionMoved': (e) => { e.diagram.layoutDiagram(true); },
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'resizingTool': new LaneResizingTool(),
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// feedback that dropping in the background is not allowed
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mouseDragOver: (e) => { e.diagram.currentCursor = 'not-allowed'; },
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// when dropped in the background, not on a Node or a Group, cancel the drop
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mouseDrop: (e) => { e.diagram.currentTool.doCancel(); },
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'animationManager.isInitial': false,
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'undoManager.isEnabled': true
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});
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myDiagram.nodeTemplateMap.add('Header', // an overall table header, at the top
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$(go.Part, 'Auto', {
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row: 0, column: 1, columnSpan: 9999,
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stretch: go.GraphObject.Horizontal,
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selectable: false, pickable: false
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}, $(go.Shape, { fill: 'transparent', strokeWidth: 0 }), $(go.TextBlock, { alignment: go.Spot.Center, font: 'bold 12pt sans-serif' }, new go.Binding('text'))));
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myDiagram.nodeTemplateMap.add('Sider', // an overall table header, on the left side
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$(go.Part, 'Auto', {
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row: 1, rowSpan: 9999, column: 0,
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stretch: go.GraphObject.Vertical,
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selectable: false, pickable: false
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}, $(go.Shape, { fill: 'transparent', strokeWidth: 0 }), $(go.TextBlock, { alignment: go.Spot.Center, font: 'bold 12pt sans-serif', angle: 270 }, new go.Binding('text'))));
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myDiagram.nodeTemplateMap.add('Column Header', // for each column header
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$(go.Part, 'Spot', {
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row: 1, rowSpan: 9999, column: 2,
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minSize: new go.Size(100, NaN),
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stretch: go.GraphObject.Fill,
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movable: false,
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resizable: true,
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resizeAdornmentTemplate: $(go.Adornment, 'Spot', $(go.Placeholder), $(go.Shape, // for changing the length of a lane
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{
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alignment: go.Spot.Right,
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desiredSize: new go.Size(7, 50),
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fill: 'lightblue', stroke: 'dodgerblue',
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cursor: 'col-resize'
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}))
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}, new go.Binding('column', 'col'), $(go.Shape, { fill: null }, new go.Binding('fill', 'color')), $(go.Panel, 'Auto', {
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alignment: go.Spot.Top, alignmentFocus: go.Spot.Bottom,
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stretch: go.GraphObject.Horizontal,
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height: myDiagram.layout.getRowDefinition(1).height
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}, $(go.Shape, { fill: 'transparent', strokeWidth: 0 }), $(go.TextBlock, {
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font: 'bold 10pt sans-serif', isMultiline: false,
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wrap: go.TextBlock.None, overflow: go.TextBlock.OverflowEllipsis
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}, new go.Binding('text')))));
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myDiagram.nodeTemplateMap.add('Row Sider', // for each row header
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$(go.Part, 'Spot', {
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row: 2, column: 1, columnSpan: 9999,
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minSize: new go.Size(NaN, 100),
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stretch: go.GraphObject.Fill,
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movable: false,
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resizable: true,
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resizeAdornmentTemplate: $(go.Adornment, 'Spot', $(go.Placeholder), $(go.Shape, // for changing the breadth of a lane
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{
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alignment: go.Spot.Bottom,
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desiredSize: new go.Size(50, 7),
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fill: 'lightblue', stroke: 'dodgerblue',
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cursor: 'row-resize'
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}))
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}, new go.Binding('row'), $(go.Shape, { fill: null }, new go.Binding('fill', 'color')), $(go.Panel, 'Auto', {
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alignment: go.Spot.Left, alignmentFocus: go.Spot.Right,
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stretch: go.GraphObject.Vertical, angle: 270,
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height: myDiagram.layout.getColumnDefinition(1).width
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}, $(go.Shape, { fill: 'transparent', strokeWidth: 0 }), $(go.TextBlock, {
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font: 'bold 10pt sans-serif', isMultiline: false,
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wrap: go.TextBlock.None, overflow: go.TextBlock.OverflowEllipsis
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}, new go.Binding('text')))));
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myDiagram.nodeTemplate = // for regular nodes within cells (groups); you'll want to extend this
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$(go.Node, 'Auto', { width: 100, height: 50, margin: 4 }, // assume uniform Margin, all around
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new go.Binding('row'), new go.Binding('column', 'col'), $(go.Shape, { fill: 'white' }, new go.Binding('fill', 'color')), $(go.TextBlock, new go.Binding('text', 'key')));
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myDiagram.groupTemplate = // for cells
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$(go.Group, 'Auto', {
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layerName: 'Background',
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stretch: go.GraphObject.Fill,
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selectable: false,
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computesBoundsAfterDrag: true,
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computesBoundsIncludingLocation: true,
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handlesDragDropForMembers: true,
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mouseDragEnter: (e, group) => {
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if (group instanceof go.Group) group.isHighlighted = true;
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},
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mouseDragLeave: (e, group) => {
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if (group instanceof go.Group) group.isHighlighted = false;
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},
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mouseDrop: (e, group) => {
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if (!(group instanceof go.Group)) return;
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// if any dropped part wasn't already a member of this group, we'll want to let the group's row
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// column allow themselves to be resized automatically, in case the row height or column width
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// had been set manually by the LaneResizingTool
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const anynew = e.diagram.selection.any((p) => p.containingGroup !== group);
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// Don't allow headers/siders to be dropped
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const anyHeadersSiders = e.diagram.selection.any((p) => {
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return p.category === 'Column Header' || p.category === 'Row Sider';
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});
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if (!anyHeadersSiders && group.addMembers(e.diagram.selection, true)) {
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if (anynew) {
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e.diagram.layout.getRowDefinition(group.row).height = NaN;
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e.diagram.layout.getColumnDefinition(group.column).width = NaN;
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}
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}
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else { // failure upon trying to add parts to this group
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e.diagram.currentTool.doCancel();
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}
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}
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}, new go.Binding('row'), new go.Binding('column', 'col'),
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// the group is normally unseen -- it is completely transparent except when given a color or when highlighted
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$(go.Shape, {
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fill: 'transparent', stroke: 'transparent',
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strokeWidth: myDiagram.nodeTemplate.margin.left,
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stretch: go.GraphObject.Fill
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}, new go.Binding('fill', 'color'), new go.Binding('stroke', 'isHighlighted', (h) => h ? 'red' : 'transparent').ofObject()), $(go.Placeholder, {
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alignment: ((m) => new go.Spot(0, 0, m.top, m.left))(myDiagram.nodeTemplate.margin),
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padding: ((m) => new go.Margin(0, m.right, m.bottom, 0))(myDiagram.nodeTemplate.margin)
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}));
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myDiagram.model = new go.GraphLinksModel([
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// headers
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{ key: 'Header', text: 'Vacation Procedures', category: 'Header' },
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{ key: 'Sider', text: 'Personnel', category: 'Sider' },
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// column and row headers
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{ key: 'Request', text: 'Request', col: 2, category: 'Column Header' },
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{ key: 'Approval', text: 'Approval', col: 3, category: 'Column Header' },
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{ key: 'Employee', text: 'Employee', row: 2, category: 'Row Sider' },
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{ key: 'Manager', text: 'Manager', row: 3, category: 'Row Sider' },
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{ key: 'Administrator', text: 'Administrator', row: 4, category: 'Row Sider' },
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// cells, each a group assigned to a row and column
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{ key: 'EmpReq', row: 2, col: 2, isGroup: true, color: 'lightyellow' },
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{ key: 'EmpApp', row: 2, col: 3, isGroup: true, color: 'lightgreen' },
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{ key: 'ManReq', row: 3, col: 2, isGroup: true, color: 'lightgreen' },
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{ key: 'ManApp', row: 3, col: 3, isGroup: true, color: 'lightyellow' },
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{ key: 'AdmReq', row: 4, col: 2, isGroup: true, color: 'lightyellow' },
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{ key: 'AdmApp', row: 4, col: 3, isGroup: true, color: 'lightgreen' },
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// nodes, each assigned to a group/cell
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{ key: 'Delta', color: 'orange', size: '100 100', group: 'EmpReq' },
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{ key: 'Epsilon', color: 'coral', size: '100 50', group: 'EmpReq' },
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{ key: 'Zeta', color: 'tomato', size: '50 70', group: 'ManReq' },
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{ key: 'Eta', color: 'coral', size: '50 50', group: 'ManApp' },
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{ key: 'Theta', color: 'tomato', size: '100 50', group: 'AdmApp' }
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]);
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const myPalette = $(go.Palette, 'myPaletteDiv', {
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nodeTemplateMap: myDiagram.nodeTemplateMap,
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'model.nodeDataArray': [
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{ key: 'Alpha', color: 'orange' },
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{ key: 'Beta', color: 'tomato' },
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{ key: 'Gamma', color: 'goldenrod' }
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]
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});
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window.myDiagram = myDiagram; // Attach to the window for console debugging
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</script>
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</body>
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</html> |