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