create-gojs-kit
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A CLI for downloading GoJS samples, extensions, and docs
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Resizing Rows and Columns in Table Panels in Nodes | GoJS Diagramming Library
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<div class="w-full max-w-screen-xl mx-auto">
<!-- * * * * * * * * * * * * * -->
<!-- Start of GoJS sample code -->
<script src="https://cdn.jsdelivr.net/npm/gojs@3.1.0"></script>
<link rel="stylesheet" href="../assets/css/prism.css"/>
<script src="../assets/js/prism.js"></script>
<div id="allSampleContent" class="p-4 w-full">
<script src="../extensions/ColumnResizingTool.js"></script>
<script src="../extensions/RowResizingTool.js"></script>
<script id="code">
function init() {
myDiagram = new go.Diagram('myDiagramDiv', {
validCycle: go.CycleMode.NotDirected, // don't allow loops
'undoManager.isEnabled': true
});
myDiagram.toolManager.mouseDownTools
.add(
new RowResizingTool({
doResize: function (rowdef, height) { // override method
rowdef.height = height;
}
})
);
myDiagram.toolManager.mouseDownTools.add(new ColumnResizingTool());
// This template is a Panel that is used to represent each item in a Panel.itemArray.
// The Panel is data bound to the item object.
var fieldTemplate =
new go.Panel('TableRow', { // this Panel is a row in the containing Table
background: 'transparent', // so this port's background can be picked by the mouse
fromSpot: go.Spot.Right, // links only go from the right side to the left side
toSpot: go.Spot.Left,
// allow drawing links from or to this port:
fromLinkable: true,
toLinkable: true
})
.bind('portId', 'name') // this Panel is a "port"
.add(
new go.Shape({
column: 0,
width: 12,
height: 12,
margin: 4,
// but disallow drawing links from or to this shape:
fromLinkable: false,
toLinkable: false
})
.bind('figure', 'figure')
.bind('fill', 'color'),
new go.TextBlock({
name: 'TB',
column: 1,
margin: new go.Margin(0, 2),
stretch: go.Stretch.Horizontal,
font: 'bold 13px sans-serif',
wrap: go.Wrap.None,
verticalAlignment: go.Spot.Center, // keep this text centered when resized
overflow: go.TextOverflow.Ellipsis,
// and disallow drawing links from or to this text:
fromLinkable: false,
toLinkable: false
})
.bind('text', 'name'),
new go.TextBlock({
column: 2,
margin: new go.Margin(0, 2),
stretch: go.Stretch.Horizontal,
font: '13px sans-serif',
maxLines: 3,
overflow: go.TextOverflow.Ellipsis,
editable: true
})
.bindTwoWay('text', 'info')
);
// Return initialization for a RowColumnDefinition, specifying a particular column
// and adding a Binding of RowColumnDefinition.width to the IDX'th number in the data.widths Array
function makeWidthBinding(idx) {
// These two conversion functions are closed over the IDX variable.
// This source-to-target conversion extracts a number from the Array at the given index.
function getColumnWidth(arr) {
if (Array.isArray(arr) && idx < arr.length) return arr[idx];
return NaN;
}
// This target-to-source conversion sets a number in the Array at the given index.
function setColumnWidth(w, data) {
var arr = data.widths;
if (!arr) arr = [];
if (idx >= arr.length) {
for (var i = arr.length; i <= idx; i++) arr[i] = NaN; // default to NaN
}
arr[idx] = w;
return arr; // need to return the Array (as the value of data.widths)
}
return new go.RowColumnDefinition({ column: idx })
.bindTwoWay('width', 'widths', getColumnWidth, setColumnWidth);
}
// This template represents a whole "record".
myDiagram.nodeTemplate =
new go.Node('Auto')
.bindTwoWay('location', 'loc', go.Point.parse, go.Point.stringify)
.add(
// this rectangular shape surrounds the content of the node
new go.Shape({ fill: '#EEEEEE' }),
// the content consists of a header and a list of items
new go.Panel('Vertical', { stretch: go.Stretch.Horizontal, margin: 0.5 })
.add(
// this is the header for the whole node
new go.Panel('Auto', { stretch: go.Stretch.Horizontal }) // as wide as the whole node
.add(
new go.Shape({ fill: '#1570A6', strokeWidth: 0 }),
new go.TextBlock({
alignment: go.Spot.Center,
margin: 3,
stroke: 'white',
textAlign: 'center',
font: 'bold 12pt sans-serif'
})
.bind('text', 'key')
),
// this Panel holds a Panel for each item object in the itemArray;
// each item Panel is defined by the itemTemplate to be a TableRow in this Table
new go.Panel('Table', {
name: 'TABLE',
stretch: go.Stretch.Horizontal,
minSize: new go.Size(100, 10),
defaultAlignment: go.Spot.Left,
defaultStretch: go.Stretch.Horizontal,
defaultColumnSeparatorStroke: 'gray',
defaultRowSeparatorStroke: 'gray',
itemTemplate: fieldTemplate
})
.bind('itemArray', 'fields')
.addRowColumnDefinition(makeWidthBinding(0))
.addRowColumnDefinition(makeWidthBinding(1))
.addRowColumnDefinition(makeWidthBinding(2))
// end Table Panel of items
) // end Vertical Panel
); // end Node
myDiagram.linkTemplate =
new go.Link({
relinkableFrom: true,
relinkableTo: true,
toShortLength: 4
}) // let user reconnect links
.add(
new go.Shape({ strokeWidth: 1.5 }),
new go.Shape({ toArrow: 'Standard', stroke: null })
);
myDiagram.model = new go.GraphLinksModel({
copiesArrays: true,
copiesArrayObjects: true,
linkFromPortIdProperty: 'fromPort',
linkToPortIdProperty: 'toPort',
// automatically update the model that is shown on this page
Changed: e => {
if (e.isTransactionFinished) showModel();
},
nodeDataArray: [
{
key: 'Record1',
widths: [NaN, NaN, 60],
fields: [
{ name: 'field1', info: 'first field', color: '#F7B84B', figure: 'Ellipse' },
{ name: 'field2', info: 'the second one', color: '#F25022', figure: 'Ellipse' },
{ name: 'fieldThree', info: '3rd', color: '#00BCF2' }
],
loc: '0 0'
},
{
key: 'Record2',
widths: [NaN, NaN, NaN],
fields: [
{ name: 'fieldA', info: '', color: '#FFB900', figure: 'Diamond' },
{ name: 'fieldB', info: '', color: '#F25022', figure: 'Rectangle' },
{ name: 'fieldC', info: '', color: '#7FBA00', figure: 'Diamond' },
{ name: 'fieldD', info: 'fourth', color: '#00BCF2', figure: 'Rectangle' }
],
loc: '250 0'
}
],
linkDataArray: [
{ from: 'Record1', fromPort: 'field1', to: 'Record2', toPort: 'fieldA' },
{ from: 'Record1', fromPort: 'field2', to: 'Record2', toPort: 'fieldD' },
{ from: 'Record1', fromPort: 'fieldThree', to: 'Record2', toPort: 'fieldB' }
]
});
showModel(); // show the diagram's initial model
function showModel() {
document.getElementById('mySavedModel').innerHTML = myDiagram.model.toJson();
if (window.Prism) window.Prism.highlightAll();
}
}
window.addEventListener('DOMContentLoaded', init);
</script>
<div id="sample">
<div id="myDiagramDiv" style="border: solid 1px black; width: 100%; height: 400px"></div>
<p>
This makes use of two tools, defined in their own files:
<a href="../extensions/ColumnResizingTool.js">ColumnResizingTool.js</a> and
<a href="../extensions/RowResizingTool.js">RowResizingTool.js</a>. Each tool adds an
<a>Adornment</a> to a selected node that has a resize handle for each column or each row of a
"Table" <a>Panel</a>. While resizing, you can press the Tab or the Delete key in order to stop
the tool and restore the column or row to its natural size.
</p>
<p>
This sample also adds TwoWay Bindings to the <a>RowColumnDefinition.width</a> property for the
columns. Each column width is stored in the corresponding index of the node data's "widths"
property, which must be an Array of numbers. The default value is NaN, allowing the column to
occupy its natural width. Note that there are <b>no</b> Bindings for the row heights.
</p>
<p>The model data, automatically updated after each change or undo or redo:</p>
<pre style="width: 100%; height: 300px" class="lang-js"><code id="mySavedModel"></code></pre>
<p>
See also the <a href="../samples/addRemoveColumns.html">Add & Remove Rows & Columns</a> sample.
</p>
</div>
</div>
<!-- * * * * * * * * * * * * * -->
<!-- End of GoJS sample code -->
</div>
<div id="allTagDescriptions" class="p-4 w-full max-w-screen-xl mx-auto">
<hr/>
<h3 class="text-xl">GoJS Features in this sample</h3>
<!-- blacklist tags that do not correspond to a specific GoJS feature -->
<h4>Table Panels</h4>
<p>
The "Table" Panel, <a href="../api/symbols/Panel.html#static-Table" target="api">Panel.Table</a>, arranges objects in rows and columns.
Each object in a Table Panel is put into the cell indexed by the value of <a href="../api/symbols/GraphObject.html#row" target="api">GraphObject.row</a> and <a href="../api/symbols/GraphObject.html#column" target="api">GraphObject.column</a>.
The panel will look at the rows and columns for all of the objects in the panel to determine how many rows and columns the table should have.
More information can be found in the <a href="../intro/tablePanels.html">GoJS Intro</a>.
</p>
<p>
<a href="../samples/index.html#tables">Related samples</a>
</p>
<hr>
<!-- blacklist tags that do not correspond to a specific GoJS feature -->
<h4>Item Arrays</h4>
<p>
It is sometimes useful to display a variable number of elements in a node by data binding to a JavaScript Array.
In GoJS, this is simply achieved by binding (or setting) <a href="../api/symbols/Panel.html#itemArray" target="api">Panel.itemArray</a>.
The <a href="../api/symbols/Panel.html" target="api">Panel</a> will create an element in the panel for each value in the Array.
More information can be found in the <a href="../intro/itemArrays.html">GoJS Intro</a>.
</p>
<p>
<a href="../samples/index.html#itemarrays">Related samples</a>
</p>
<hr>
<!-- blacklist tags that do not correspond to a specific GoJS feature -->
<h4>Tools</h4>
<p>
<a href="../api/symbols/Tool.html" target="api">Tool</a>s handle all input events, such as mouse and keyboard interactions, in a Diagram.
There are many kinds of predefined Tool classes that implement all of the common operations that users do.
</p>
<p>
For flexibility and simplicity, all input events are canonicalized as <a href="../api/symbols/InputEvent.html" target="api">InputEvent</a>s and
redirected by the diagram to go to the <a href="../api/symbols/Diagram.html#currentTool" target="api">Diagram.currentTool</a>.
By default the Diagram.currentTool is an instance of <a href="../api/symbols/ToolManager.html" target="api">ToolManager</a> held as the <a href="../api/symbols/Diagram.html#toolManager" target="api">Diagram.toolManager</a>.
The ToolManager implements support for all mode-less tools.
The ToolManager is responsible for finding another tool that is ready to run and then making it the new current tool.
This causes the new tool to process all of the input events (mouse, keyboard, and touch) until the tool decides that it is finished,
at which time the diagram's current tool reverts back to the <a href="../api/symbols/Diagram.html#defaultTool" target="api">Diagram.defaultTool</a>, which is normally the ToolManager, again.
</p>
<p>
More information can be found in the <a href="../intro/tools.html">GoJS Intro</a>.
</p>
<p>
<a href="../samples/index.html#tools">Related samples</a>
</p>
<hr>
<!-- blacklist tags that do not correspond to a specific GoJS feature -->
<h4>GoJS Extensions</h4>
<p>
<b>GoJS</b> can be extended in a variety of ways.
The most common way to change the standard behavior is to set properties on the <a href="../api/symbols/GraphObject.html" target="api">GraphObject</a>, <a href="../api/symbols/Diagram.html" target="api">Diagram</a>, <a href="../api/symbols/CommandHandler.html" target="api">CommandHandler</a>, <a href="../api/symbols/Tool.html" target="api">Tool</a>, or <a href="../api/symbols/Layout.html" target="api">Layout</a>.
But when the desired property does not exist, you might need to override methods of CommandHandler, Tool, Layout, Link, or Node.
Methods that you can override are documented in the API reference.
Various features of GoJS can be overriden, either by replacing a method on an instance (a feature of JavaScript) or by defining a subclass.
You should not modify the prototypes of any of the <b>GoJS</b> classes.
</p>
<p>
In addition to our samples, <b>GoJS</b> provides an <strong><a href="../samples/#extensions">extensions gallery</a></strong>,
showcasing the creation of custom tools and layouts.
Those classes and samples are written in TypeScript, available at <code>../extensionsJSM/</code>,
as ECMAScript/JavaScript modules -- these use the <code>../release/go-module.js</code> library.
We recommend that you copy the files that you need into your project, so that you can adjust how they refer to the GoJS library
that you choose and so that you can include them into your own building and packaging procedures.
</p>
<p>
More information can be found in the <a href="../intro/extensions.html">GoJS Intro</a>.
</p>
<p>
<a href="../samples/index.html#extensions">Related samples</a>
</p>
<hr>
<!-- blacklist tags that do not correspond to a specific GoJS feature -->
<h4>Geometry Path Strings</h4>
<p>
The <b>GoJS</b> <a href="../api/symbols/Geometry.html" target="api">Geometry</a> class controls the "shape" of a <a href="../api/symbols/Shape.html" target="api">Shape</a>,
whereas the <a href="../api/symbols/Shape.html#fill" target="api">Shape.fill</a> and <a href="../api/symbols/Shape.html#stroke" target="api">Shape.stroke</a> and other shape properties control the colors and appearance of the shape.
For common shape figures, there are predefined geometries that can be used by setting <a href="../api/symbols/Shape.html#figure" target="api">Shape.figure</a>.
However one can also define custom geometries.
</p>
<p>
One can construct any Geometry by allocating and initializing a <a href="../api/symbols/Geometry.html" target="api">Geometry</a> of at least one <a href="../api/symbols/PathFigure.html" target="api">PathFigure</a> holding some <a href="../api/symbols/PathSegment.html" target="api">PathSegment</a>s.
But you may find that using the string representation of a Geometry is easier to write and save in a database.
Use the static method <a href="../api/symbols/Geometry.html#parse" target="api">Geometry.parse</a> or the <a href="../api/symbols/Shape.html#geometryString" target="api">Shape.geometryString</a> property to transform a geometry path string into a <a href="../api/symbols/Geometry.html" target="api">Geometry</a> object.
</p>
<p>
More information can be found in the <a href="../intro/geometry.html">GoJS Intro</a>.
</p>
<p>
<a href="../samples/index.html#geometries">Related samples</a>
</p>
<hr>
</div>
</div>
</body>
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