264 lines
11 KiB
HTML
264 lines
11 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<title>Add or Remove Columns</title>
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<meta name="description" content="Interactively adding, resizing, and removing rows and columns of a Table Panel in a GoJS Node." />
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<!-- Copyright 1998-2017 by Northwoods Software Corporation. -->
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<meta charset="UTF-8">
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<script src="../release/go.js"></script>
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<script src="../assets/js/goSamples.js"></script> <!-- this is only for the GoJS Samples framework -->
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<script id="code">
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function init() {
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if (window.goSamples) goSamples(); // init for these samples -- you don't need to call this
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var $ = go.GraphObject.make;
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myDiagram =
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$(go.Diagram, "myDiagramDiv",
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{ initialContentAlignment: go.Spot.Center,
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"undoManager.isEnabled": true
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});
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myDiagram.nodeTemplate =
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$(go.Node, "Auto",
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$(go.Shape, { fill: "white" }),
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$(go.Panel, "Table",
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new go.Binding("itemArray", "people"),
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$(go.RowColumnDefinition,
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{ row: 0, background: "lightgray" }),
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$(go.RowColumnDefinition,
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{ row: 1, separatorStroke: "black" }),
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// the table headers -- remains even if itemArray is empty
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$(go.Panel, "TableRow",
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{ isPanelMain: true },
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new go.Binding("itemArray", "columnDefinitions"),
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{
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itemTemplate: // bound to a column definition object
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$(go.Panel,
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new go.Binding("column"),
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$(go.TextBlock,
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{ margin: new go.Margin(2, 2, 0, 2), font: "bold 10pt sans-serif" },
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new go.Binding("text"))
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)
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}
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),
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{ // the rows for the people
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defaultAlignment: go.Spot.Left,
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defaultColumnSeparatorStroke: "black",
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itemTemplate: // bound to a person/row data object
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$(go.Panel, "TableRow",
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// which in turn consists of a collection of cell objects,
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// held by the "columns" property in an Array
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new go.Binding("itemArray", "columns"),
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// you could also have other Bindings here for the whole row
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{
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itemTemplate: // bound to a cell object
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$(go.Panel, // each of which as "attr" and "text" properties
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{ stretch: go.GraphObject.Fill, alignment: go.Spot.TopLeft },
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new go.Binding("column", "attr",
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function(a, elt) { // ELT is this bound item/cell Panel
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// elt.data will be the cell object
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// elt.panel.data will be the person/row data object
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// elt.part.data will be the node data object
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// "columnDefinitions" is on the node data object, so:
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var cd = findColumnDefinitionForName(elt.part.data, a);
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if (cd !== null) return cd.column;
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throw new Error("unknown column name: " + a);
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}),
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// you could also have other Bindings here for this cell
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$(go.TextBlock, { editable: true },
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{ margin: new go.Margin(2, 2, 0, 2), wrap: go.TextBlock.None },
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new go.Binding("text").makeTwoWay())
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)
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}
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)
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}
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)
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);
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myDiagram.model =
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$(go.GraphLinksModel,
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{
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copiesArrays: true,
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copiesArrayObjects: true,
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nodeDataArray: [
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{ // first node
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key: 1,
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columnDefinitions: [
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// each column definition needs to specify the column used
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{ attr: "name", text: "Name", column: 0 },
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{ attr: "phone", text: "Phone #", column: 1 },
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{ attr: "office", text: "Office", column: 2 }
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],
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people: [ // the table of people
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// each row is a person with an Array of Objects associating a column name with a text value
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{ columns: [{ attr: "name", text: "Alice" }, { attr: "phone", text: "2345" }, { attr: "office", text: "C4-E18"}] },
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{ columns: [{ attr: "name", text: "Bob" }, { attr: "phone", text: "9876" }, { attr: "office", text: "E1-B34"}] },
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{ columns: [{ attr: "name", text: "Carol" }, { attr: "phone", text: "1111" }, { attr: "office", text: "C4-E23"}] },
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{ columns: [{ attr: "name", text: "Ted" }, { attr: "phone", text: "2222" }, { attr: "office", text: "C4-E197"}] }
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]
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},
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{ // second node
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key: 2,
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columnDefinitions: [
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{ attr: "name", text: "Name", column: 0 },
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{ attr: "phone", text: "Phone #", column: 2 }, // note the different order of columns
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{ attr: "office", text: "Office", column: 1 }
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],
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people: [
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{ columns: [{ attr: "name", text: "Robert" }, { attr: "phone", text: "5656" }, { attr: "office", text: "B1-A27"}] },
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{ columns: [{ attr: "name", text: "Natalie" }, { attr: "phone", text: "5698" }, { attr: "office", text: "B1-B6"}] }
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]
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}
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],
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linkDataArray: [
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{ from: 1, to: 2 }
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]
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}
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);
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}
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// Add or remove a person row from the selected node's table of people.
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function insertIntoArray() {
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var n = myDiagram.selection.first();
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if (n === null) return;
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var d = n.data;
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myDiagram.startTransaction("insertIntoTable");
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// add item as second in the list, at index #1
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// of course this new data could be more realistic:
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myDiagram.model.insertArrayItem(d.people, 1, {
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columns: [{ attr: "name", text: "Elena" },
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{ attr: "phone", text: "456" },
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{ attr: "office", text: "LA" }]
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});
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myDiagram.commitTransaction("insertIntoTable");
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}
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function removeFromArray() {
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var n = myDiagram.selection.first();
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if (n === null) return;
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var d = n.data;
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myDiagram.startTransaction("removeFromTable");
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// remove second item of list, at index #1
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myDiagram.model.removeArrayItem(d.people, 1);
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myDiagram.commitTransaction("removeFromTable");
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}
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// add or remove a column from the selected node's table of people
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function findColumnDefinitionForName(nodedata, attrname) {
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var columns = nodedata.columnDefinitions;
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for (var i = 0; i < columns.length; i++) {
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if (columns[i].attr === attrname) return columns[i];
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}
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return null;
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}
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function findColumnDefinitionForColumn(nodedata, idx) {
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var columns = nodedata.columnDefinitions;
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for (var i = 0; i < columns.length; i++) {
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if (columns[i].column === idx) return columns[i];
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}
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return null;
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}
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function addColumn(attrname) {
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var n = myDiagram.selection.first();
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if (n === null) return;
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var d = n.data;
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// if name is not given, find an unused column name
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if (attrname === undefined || attrname === "") {
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attrname = "new";
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var count = 1;
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while (findColumnDefinitionForName(d, attrname) !== null) {
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attrname = "new" + (count++).toString();
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}
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}
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// find an unused column #
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var col = 3;
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while (findColumnDefinitionForColumn(d, col) !== null) {
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col++;
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}
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myDiagram.startTransaction("addColumn");
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var model = myDiagram.model;
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// add a column definition for the node's whole table
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model.addArrayItem(d.columnDefinitions, {
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attr: attrname,
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text: attrname,
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column: col
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});
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// add cell to each person in the node's table of people
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var people = d.people;
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for (var j = 0; j < people.length; j++) {
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var person = people[j];
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model.addArrayItem(person.columns, {
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attr: attrname,
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text: Math.floor(Math.random() * 1000).toString()
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});
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}
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myDiagram.commitTransaction("addColumn");
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}
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function removeColumn() {
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var n = myDiagram.selection.first();
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if (n === null) return;
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var d = n.data;
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var coldef = d.columnDefinitions[3]; // get the fourth column
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if (coldef === undefined) return;
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var attrname = coldef.attr;
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myDiagram.startTransaction("removeColumn");
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var model = myDiagram.model;
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model.removeArrayItem(d.columnDefinitions, 3);
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// update columns for each person in this table
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var people = d.people;
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for (var j = 0; j < people.length; j++) {
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var person = people[j];
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var columns = person.columns;
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for (var k = 0; k < columns.length; k++) {
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var cell = columns[k];
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if (cell.attr === attrname) {
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// get rid of this attribute cell from the person.columns Array
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model.removeArrayItem(columns, k);
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break;
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}
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}
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}
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myDiagram.commitTransaction("removeColumn");
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}
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function swapTwoColumns() {
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myDiagram.startTransaction("swapColumns");
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var model = myDiagram.model;
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myDiagram.selection.each(function(n) {
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if (!(n instanceof go.Node)) return;
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var d = n.data;
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var phonedef = findColumnDefinitionForName(d, "phone");
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if (phonedef === null) return;
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var phonecolumn = phonedef.column; // remember the column number
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var officedef = findColumnDefinitionForName(d, "office");
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if (officedef === null) return;
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var officecolumn = officedef.column; // and this one too
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model.setDataProperty(phonedef, "column", officecolumn);
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model.setDataProperty(officedef, "column", phonecolumn);
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model.updateTargetBindings(d); // update all bindings, to get the cells right
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});
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myDiagram.commitTransaction("swapColumns");
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}
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</script>
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</head>
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<body onload="init()">
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<div id="sample">
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<div id="myDiagramDiv" style="border: solid 1px black; width:100%; height:400px"></div>
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<p>Add a row or Remove the second row of the table held by the selected node:</p>
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<button onclick="insertIntoArray()">Insert Into Array</button>
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<button onclick="removeFromArray()">Remove From Array</button>
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<p>Add a column or Remove the fourth column from the table of the selected node:</p>
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<button onclick="addColumn()">Add Column</button>
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<button onclick="removeColumn()">Remove Column</button>
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<p>Swap the "phone" and "office" columns for each selected node:</p>
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<button onclick="swapTwoColumns()">Swap Two Columns</button>
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<p>See also the <a href="../extensions/ColumnResizing.html">Column and Row Resizing Tools</a></p>
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</div>
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</body>
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</html> |