gojs
Version:
Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams
409 lines (384 loc) • 19.8 kB
HTML
<html lang="en">
<head>
<meta charset="utf-8"/>
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no, viewport-fit=cover"/>
<meta name="description" content="A mind map editor, showing how subtrees can be moved, copied, deleted, and laid out."/>
<link rel="stylesheet" href="../assets/css/style.css"/>
<!-- Copyright 1998-2023 by Northwoods Software Corporation. -->
<title>Mind Map</title>
</head>
<body>
<!-- This top nav is not part of the sample code -->
<nav id="navTop" class="w-full z-30 top-0 text-white bg-nwoods-primary">
<div class="w-full container max-w-screen-lg mx-auto flex flex-wrap sm:flex-nowrap items-center justify-between mt-0 py-2">
<div class="md:pl-4">
<a class="text-white hover:text-white no-underline hover:no-underline
font-bold text-2xl lg:text-4xl rounded-lg hover:bg-nwoods-secondary " href="../">
<h1 class="my-0 p-1 ">GoJS</h1>
</a>
</div>
<button id="topnavButton" class="rounded-lg sm:hidden focus:outline-none focus:ring" aria-label="Navigation">
<svg fill="currentColor" viewBox="0 0 20 20" class="w-6 h-6">
<path id="topnavOpen" fill-rule="evenodd" d="M3 5a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM3 10a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM9 15a1 1 0 011-1h6a1 1 0 110 2h-6a1 1 0 01-1-1z" clip-rule="evenodd"></path>
<path id="topnavClosed" class="hidden" fill-rule="evenodd" d="M4.293 4.293a1 1 0 011.414 0L10 8.586l4.293-4.293a1 1 0 111.414 1.414L11.414 10l4.293 4.293a1 1 0 01-1.414 1.414L10 11.414l-4.293 4.293a1 1 0 01-1.414-1.414L8.586 10 4.293 5.707a1 1 0 010-1.414z" clip-rule="evenodd"></path>
</svg>
</button>
<div id="topnavList" class="hidden sm:block items-center w-auto mt-0 text-white p-0 z-20">
<ul class="list-reset list-none font-semibold flex justify-end flex-wrap sm:flex-nowrap items-center px-0 pb-0">
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<li class="p-1 sm:p-0"><a class="topnav-link" href="../samples/">Samples</a></li>
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target="_blank" rel="noopener" onclick="getOutboundLink('https://www.nwoods.com/sales/index.html', 'buy');">Buy</a></li>
</ul>
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</div>
<hr class="border-b border-gray-600 opacity-50 my-0 py-0" />
</nav>
<div class="md:flex flex-col md:flex-row md:min-h-screen w-full max-w-screen-xl mx-auto">
<div id="navSide" class="flex flex-col w-full md:w-48 text-gray-700 bg-white flex-shrink-0"></div>
<!-- * * * * * * * * * * * * * -->
<!-- Start of GoJS sample code -->
<script src="../release/go.js"></script>
<div id="allSampleContent" class="p-4 w-full">
<script id="code">
function init() {
// Since 2.2 you can also author concise templates with method chaining instead of GraphObject.make
// For details, see https://gojs.net/latest/intro/buildingObjects.html
const $ = go.GraphObject.make;
myDiagram =
new go.Diagram("myDiagramDiv",
{
// when the user drags a node, also move/copy/delete the whole subtree starting with that node
"commandHandler.copiesTree": true,
"commandHandler.copiesParentKey": true,
"commandHandler.deletesTree": true,
"draggingTool.dragsTree": true,
"undoManager.isEnabled": true
});
// when the document is modified, add a "*" to the title and enable the "Save" button
myDiagram.addDiagramListener("Modified", e => {
var button = document.getElementById("SaveButton");
if (button) button.disabled = !myDiagram.isModified;
var idx = document.title.indexOf("*");
if (myDiagram.isModified) {
if (idx < 0) document.title += "*";
} else {
if (idx >= 0) document.title = document.title.slice(0, idx);
}
});
// a node consists of some text with a line shape underneath
myDiagram.nodeTemplate =
$(go.Node, "Vertical",
{ selectionObjectName: "TEXT" },
$(go.TextBlock,
{
name: "TEXT",
minSize: new go.Size(30, 15),
editable: true
},
// remember not only the text string but the scale and the font in the node data
new go.Binding("text", "text").makeTwoWay(),
new go.Binding("scale", "scale").makeTwoWay(),
new go.Binding("font", "font").makeTwoWay()),
$(go.Shape, "LineH",
{
stretch: go.GraphObject.Horizontal,
strokeWidth: 3, height: 3,
// this line shape is the port -- what links connect with
portId: "", fromSpot: go.Spot.LeftRightSides, toSpot: go.Spot.LeftRightSides
},
new go.Binding("stroke", "brush"),
// make sure links come in from the proper direction and go out appropriately
new go.Binding("fromSpot", "dir", d => spotConverter(d, true)),
new go.Binding("toSpot", "dir", d => spotConverter(d, false))),
// remember the locations of each node in the node data
new go.Binding("location", "loc", go.Point.parse).makeTwoWay(go.Point.stringify),
// make sure text "grows" in the desired direction
new go.Binding("locationSpot", "dir", d => spotConverter(d, false))
);
// selected nodes show a button for adding children
myDiagram.nodeTemplate.selectionAdornmentTemplate =
$(go.Adornment, "Spot",
$(go.Panel, "Auto",
// this Adornment has a rectangular blue Shape around the selected node
$(go.Shape, { fill: null, stroke: "dodgerblue", strokeWidth: 3 }),
$(go.Placeholder, { margin: new go.Margin(4, 4, 0, 4) })
),
// and this Adornment has a Button to the right of the selected node
$("Button",
{
alignment: go.Spot.Right,
alignmentFocus: go.Spot.Left,
click: addNodeAndLink // define click behavior for this Button in the Adornment
},
$(go.TextBlock, "+", // the Button content
{ font: "bold 8pt sans-serif" })
)
);
// the context menu allows users to change the font size and weight,
// and to perform a limited tree layout starting at that node
myDiagram.nodeTemplate.contextMenu =
$("ContextMenu",
$("ContextMenuButton",
$(go.TextBlock, "Bigger"),
{ click: (e, obj) => changeTextSize(obj, 1.1) }),
$("ContextMenuButton",
$(go.TextBlock, "Smaller"),
{ click: (e, obj) => changeTextSize(obj, 1 / 1.1) }),
$("ContextMenuButton",
$(go.TextBlock, "Bold/Normal"),
{ click: (e, obj) => toggleTextWeight(obj) }),
$("ContextMenuButton",
$(go.TextBlock, "Copy"),
{ click: (e, obj) => e.diagram.commandHandler.copySelection() }),
$("ContextMenuButton",
$(go.TextBlock, "Delete"),
{ click: (e, obj) => e.diagram.commandHandler.deleteSelection() }),
$("ContextMenuButton",
$(go.TextBlock, "Undo"),
{ click: (e, obj) => e.diagram.commandHandler.undo() }),
$("ContextMenuButton",
$(go.TextBlock, "Redo"),
{ click: (e, obj) => e.diagram.commandHandler.redo() }),
$("ContextMenuButton",
$(go.TextBlock, "Layout"),
{
click: (e, obj) => {
var adorn = obj.part;
adorn.diagram.startTransaction("Subtree Layout");
layoutTree(adorn.adornedPart);
adorn.diagram.commitTransaction("Subtree Layout");
}
}
)
);
// a link is just a Bezier-curved line of the same color as the node to which it is connected
myDiagram.linkTemplate =
$(go.Link,
{
curve: go.Link.Bezier,
fromShortLength: -2,
toShortLength: -2,
selectable: false
},
$(go.Shape,
{ strokeWidth: 3 },
new go.Binding("stroke", "toNode", n => {
if (n.data.brush) return n.data.brush;
return "black";
}).ofObject())
);
// the Diagram's context menu just displays commands for general functionality
myDiagram.contextMenu =
$("ContextMenu",
$("ContextMenuButton",
$(go.TextBlock, "Paste"),
{ click: (e, obj) => e.diagram.commandHandler.pasteSelection(e.diagram.toolManager.contextMenuTool.mouseDownPoint) },
new go.Binding("visible", "", o => o.diagram && o.diagram.commandHandler.canPasteSelection(o.diagram.toolManager.contextMenuTool.mouseDownPoint)).ofObject()),
$("ContextMenuButton",
$(go.TextBlock, "Undo"),
{ click: (e, obj) => e.diagram.commandHandler.undo() },
new go.Binding("visible", "", o => o.diagram && o.diagram.commandHandler.canUndo()).ofObject()),
$("ContextMenuButton",
$(go.TextBlock, "Redo"),
{ click: (e, obj) => e.diagram.commandHandler.redo() },
new go.Binding("visible", "", o => o.diagram && o.diagram.commandHandler.canRedo()).ofObject()),
$("ContextMenuButton",
$(go.TextBlock, "Save"),
{ click: (e, obj) => save() }),
$("ContextMenuButton",
$(go.TextBlock, "Load"),
{ click: (e, obj) => load() })
);
myDiagram.addDiagramListener("SelectionMoved", e => {
var rootX = myDiagram.findNodeForKey(0).location.x;
myDiagram.selection.each(node => {
if (node.data.parent !== 0) return; // Only consider nodes connected to the root
var nodeX = node.location.x;
if (rootX < nodeX && node.data.dir !== "right") {
updateNodeDirection(node, "right");
} else if (rootX > nodeX && node.data.dir !== "left") {
updateNodeDirection(node, "left");
}
layoutTree(node);
});
});
// read in the predefined graph using the JSON format data held in the "mySavedModel" textarea
load();
}
function spotConverter(dir, from) {
if (dir === "left") {
return (from ? go.Spot.Left : go.Spot.Right);
} else {
return (from ? go.Spot.Right : go.Spot.Left);
}
}
function changeTextSize(obj, factor) {
var adorn = obj.part;
adorn.diagram.startTransaction("Change Text Size");
var node = adorn.adornedPart;
var tb = node.findObject("TEXT");
tb.scale *= factor;
adorn.diagram.commitTransaction("Change Text Size");
}
function toggleTextWeight(obj) {
var adorn = obj.part;
adorn.diagram.startTransaction("Change Text Weight");
var node = adorn.adornedPart;
var tb = node.findObject("TEXT");
// assume "bold" is at the start of the font specifier
var idx = tb.font.indexOf("bold");
if (idx < 0) {
tb.font = "bold " + tb.font;
} else {
tb.font = tb.font.slice(idx + 5);
}
adorn.diagram.commitTransaction("Change Text Weight");
}
function updateNodeDirection(node, dir) {
myDiagram.model.setDataProperty(node.data, "dir", dir);
// recursively update the direction of the child nodes
var chl = node.findTreeChildrenNodes(); // gives us an iterator of the child nodes related to this particular node
while (chl.next()) {
updateNodeDirection(chl.value, dir);
}
}
function addNodeAndLink(e, obj) {
var adorn = obj.part;
var diagram = adorn.diagram;
diagram.startTransaction("Add Node");
var oldnode = adorn.adornedPart;
var olddata = oldnode.data;
// copy the brush and direction to the new node data
var newdata = { text: "idea", brush: olddata.brush, dir: olddata.dir, parent: olddata.key };
diagram.model.addNodeData(newdata);
layoutTree(oldnode);
diagram.commitTransaction("Add Node");
// if the new node is off-screen, scroll the diagram to show the new node
var newnode = diagram.findNodeForData(newdata);
if (newnode !== null) diagram.scrollToRect(newnode.actualBounds);
}
function layoutTree(node) {
if (node.data.key === 0) { // adding to the root?
layoutAll(); // lay out everything
} else { // otherwise lay out only the subtree starting at this parent node
var parts = node.findTreeParts();
layoutAngle(parts, node.data.dir === "left" ? 180 : 0);
}
}
function layoutAngle(parts, angle) {
var layout = go.GraphObject.make(go.TreeLayout,
{
angle: angle,
arrangement: go.TreeLayout.ArrangementFixedRoots,
nodeSpacing: 5,
layerSpacing: 20,
setsPortSpot: false, // don't set port spots since we're managing them with our spotConverter function
setsChildPortSpot: false
});
layout.doLayout(parts);
}
function layoutAll() {
var root = myDiagram.findNodeForKey(0);
if (root === null) return;
myDiagram.startTransaction("Layout");
// split the nodes and links into two collections
var rightward = new go.Set(/*go.Part*/);
var leftward = new go.Set(/*go.Part*/);
root.findLinksConnected().each(link => {
var child = link.toNode;
if (child.data.dir === "left") {
leftward.add(root); // the root node is in both collections
leftward.add(link);
leftward.addAll(child.findTreeParts());
} else {
rightward.add(root); // the root node is in both collections
rightward.add(link);
rightward.addAll(child.findTreeParts());
}
});
// do one layout and then the other without moving the shared root node
layoutAngle(rightward, 0);
layoutAngle(leftward, 180);
myDiagram.commitTransaction("Layout");
}
// Show the diagram's model in JSON format
function save() {
document.getElementById("mySavedModel").value = myDiagram.model.toJson();
myDiagram.isModified = false;
}
function load() {
myDiagram.model = go.Model.fromJson(document.getElementById("mySavedModel").value);
}
window.addEventListener('DOMContentLoaded', init);
</script>
<div id="sample">
<div id="myDiagramDiv" style="border: solid 1px black; width:100%; height:300px;"></div>
<p>
A mind map is a kind of spider diagram that organizes information around a central concept, with connecting branches.
</p>
<p>
The layout is controlled by moving the nodes closest to the tree's root node.
When one of these nodes is moved horizontally to the other side of the root,
all of its children will be sent to <a>Layout.doLayout</a> with a new direction,
causing text to always be moved outwards from the root. The <b>spotConverter</b> function is used to manage
<a>GraphObject.fromSpot</a> and <a>GraphObject.toSpot</a> for nodes manually, so the <a>TreeLayout.setsPortSpot</a> and <a>TreeLayout.setsChildPortSpot</a>
properties are set to false so that laying out the diagram will not overwrite the values.
</p>
<p>
When a node is deleted the <a>CommandHandler.deletesTree</a> property ensures that
all of its children are deleted with it. When a node is dragged the <a>DraggingTool.dragsTree</a>
property ensures that all its children are dragged with it.
Both of these are set during the the Diagram's initalization.
</p>
<p>
Node templates also have a <a>Part.selectionAdornmentTemplate</a> defined to allow for new nodes to be created and a <a>GraphObject.contextMenu</a> with additional commands.
</p>
<button id="SaveButton" onclick="save()">Save</button>
<button onclick="load()">Load</button>
<button onclick="layoutAll()">Layout</button>
Diagram Model saved in JSON format:
<br />
<textarea id="mySavedModel" style="width:100%;height:400px">
{ "class": "go.TreeModel",
"nodeDataArray": [
{"key":0, "text":"Mind Map", "loc":"0 0"},
{"key":1, "parent":0, "text":"Getting more time", "brush":"skyblue", "dir":"right", "loc":"77 -22"},
{"key":11, "parent":1, "text":"Wake up early", "brush":"skyblue", "dir":"right", "loc":"200 -48"},
{"key":12, "parent":1, "text":"Delegate", "brush":"skyblue", "dir":"right", "loc":"200 -22"},
{"key":13, "parent":1, "text":"Simplify", "brush":"skyblue", "dir":"right", "loc":"200 4"},
{"key":2, "parent":0, "text":"More effective use", "brush":"darkseagreen", "dir":"right", "loc":"77 43"},
{"key":21, "parent":2, "text":"Planning", "brush":"darkseagreen", "dir":"right", "loc":"203 30"},
{"key":211, "parent":21, "text":"Priorities", "brush":"darkseagreen", "dir":"right", "loc":"274 17"},
{"key":212, "parent":21, "text":"Ways to focus", "brush":"darkseagreen", "dir":"right", "loc":"274 43"},
{"key":22, "parent":2, "text":"Goals", "brush":"darkseagreen", "dir":"right", "loc":"203 56"},
{"key":3, "parent":0, "text":"Time wasting", "brush":"palevioletred", "dir":"left", "loc":"-20 -31.75"},
{"key":31, "parent":3, "text":"Too many meetings", "brush":"palevioletred", "dir":"left", "loc":"-117 -64.25"},
{"key":32, "parent":3, "text":"Too much time spent on details", "brush":"palevioletred", "dir":"left", "loc":"-117 -25.25"},
{"key":33, "parent":3, "text":"Message fatigue", "brush":"palevioletred", "dir":"left", "loc":"-117 0.75"},
{"key":331, "parent":31, "text":"Check messages less", "brush":"palevioletred", "dir":"left", "loc":"-251 -77.25"},
{"key":332, "parent":31, "text":"Message filters", "brush":"palevioletred", "dir":"left", "loc":"-251 -51.25"},
{"key":4, "parent":0, "text":"Key issues", "brush":"coral", "dir":"left", "loc":"-20 52.75"},
{"key":41, "parent":4, "text":"Methods", "brush":"coral", "dir":"left", "loc":"-103 26.75"},
{"key":42, "parent":4, "text":"Deadlines", "brush":"coral", "dir":"left", "loc":"-103 52.75"},
{"key":43, "parent":4, "text":"Checkpoints", "brush":"coral", "dir":"left", "loc":"-103 78.75"}
]
}
</textarea>
</div>
</div>
<!-- * * * * * * * * * * * * * -->
<!-- End of GoJS sample code -->
</div>
</body>
<!-- This script is part of the gojs.net website, and is not needed to run the sample -->
<script src="../assets/js/goSamples.js"></script>
</html>