GoJS简单示例
<!DOCTYPE html> <html> <head>
<meta charset="utf-8">
<title>GoJS实例--修改节点名称</title>
<style>
#myDiagramDiv {
width: 400px;
height: 500px;
background-color: #DAE4E4;
}
</style>
<script src="https://unpkg.com/gojs/release/go-debug.js"></script>
</head> <body>
<div id="myDiagramDiv"></div> <script>
var diagram = new go.Diagram("myDiagramDiv");
var $ = go.GraphObject.make;
diagram.add(
$(go.Node, "Auto",
$(go.Shape, "RoundedRectangle", {
fill: "lightblue"
}),
$(go.TextBlock, "修改节点名称", {
margin: 5
})
)); diagram.nodeTemplate =
$(go.Node, "Auto",
{ locationSpot: go.Spot.Center },
$(go.Shape, "RoundedRectangle",
{ // default values if the data.highlight is undefined:
fill: "yellow", stroke: "orange", strokeWidth: 2
},
new go.Binding("fill", "highlight", function (v) { return v ? "pink" : "lightblue"; }),
new go.Binding("stroke", "highlight", function (v) { return v ? "red" : "blue"; }),
new go.Binding("strokeWidth", "highlight", function (v) { return v ? 3 : 1; })),
$(go.TextBlock,
{ margin: 5 },
// 注意，这里绑定后才能修改值
new go.Binding("text", "name"))
); diagram.model.nodeDataArray = [
{ key: "Alpha", name: "how are you?", highlight: false } // just one node, and no links
]; function flash() {
// all model changes should happen in a transaction
diagram.model.commit(function (m) {
var data = m.nodeDataArray[0]; // get the first node data
m.set(data, "highlight", !data.highlight);
console.log(data);
// 修改节点数据对象上的“name”值,注意这里能修改是因为定义了Binding：new go.Binding("text", "name")
m.set(data, "name", 'I am doing well');
}, "flash");
}
function loop() {
setTimeout(function () { flash(); loop(); }, 2000);
}
loop();
</script>
</body>
<!DOCTYPE html>
<html> <head>
<meta charset="utf-8">
<title>GoJS实例--改变箭头</title>
<style>
#myDiagramDiv {
width: 400px;
height: 500px;
background-color: #DAE4E4;
}
</style>
<script src="https://unpkg.com/gojs/release/go-debug.js"></script>
</head> <body>
<div id="myDiagramDiv"></div> <script>
var diagram = new go.Diagram("myDiagramDiv");
var $ = go.GraphObject.make;
diagram.add(
$(go.Node, "Auto",
$(go.Shape, "RoundedRectangle", {
fill: "lightblue"
}),
$(go.TextBlock, "GoJS实例--改变箭头", {
margin: 5
})
)); diagram.nodeTemplate =
$(go.Node, "Auto",
{ locationSpot: go.Spot.Center },
$(go.Shape, "RoundedRectangle",
{ fill: "yellow", stroke: "orange", strokeWidth: 2 }),
$(go.TextBlock,
{ margin: 5 },
new go.Binding("text", "key"))
); var nodeDataArray = [
{ key: "Alpha" },
{ key: "Beta" },
{ key: "Gamma" }
];
var linkDataArray = [
{ from: "Alpha", to: "Beta" }
];
diagram.model = new go.GraphLinksModel(nodeDataArray, linkDataArray); function switchTo() {
// all model changes should happen in a transaction
diagram.model.commit(function(m) {
var data = m.linkDataArray[0]; // get the first link data
if (m.getToKeyForLinkData(data) === "Beta")
m.setToKeyForLinkData(data, "Gamma");
else
m.setToKeyForLinkData(data, "Beta");
}, "reconnect link");
}
function loop() {
setTimeout(function() { switchTo(); loop(); }, 1000);
}
loop();
</script>
</body>
<!DOCTYPE html>
<html> <head>
<meta charset="utf-8">
<title>GoJS实例--选中节点改变填充颜色</title>
<style>
#myDiagramDiv {
width: 400px;
height: 500px;
background-color: #DAE4E4;
}
</style>
<script src="https://unpkg.com/gojs/release/go-debug.js"></script>
</head> <body>
<div id="myDiagramDiv"></div> <script>
var diagram = new go.Diagram("myDiagramDiv");
var $ = go.GraphObject.make;
diagram.add(
$(go.Node, "Auto",
$(go.Shape, "RoundedRectangle", {
fill: "lightblue"
}),
$(go.TextBlock, "GoJS实例--选中节点改变填充颜色", {
margin: 5
})
)); diagram.nodeTemplate =
$(go.Node, "Auto",
{ selectionAdorned: false }, // no blue selection handle!
$(go.Shape, "RoundedRectangle",
// bind Shape.fill to Node.isSelected converted to a color
new go.Binding("fill", "isSelected", function(sel) {
return sel ? "dodgerblue" : "lightgray";
}).ofObject()), // no name means bind to the whole Part
$(go.TextBlock,
{ margin: 5 },
new go.Binding("text", "descr"))
); diagram.model.nodeDataArray = [
{ descr: "点我变蓝" },
{ descr: "选我变蓝" }
];
</script>
</body>
<!DOCTYPE html>
<html> <head>
<meta charset="utf-8">
<title>GoJS实例--改变共享颜色</title>
<style>
#myDiagramDiv {
width: 400px;
height: 500px;
background-color: #DAE4E4;
}
</style>
<script src="https://unpkg.com/gojs/release/go-debug.js"></script>
</head> <body>
<div id="myDiagramDiv"></div>
<button id="zoomToFit" onclick="changeColor()">点我改变共享的颜色</button>
<script>
var diagram = new go.Diagram("myDiagramDiv");
var $ = go.GraphObject.make;
diagram.add(
$(go.Node, "Auto",
$(go.Shape, "RoundedRectangle", {
fill: "lightblue"
}),
$(go.TextBlock, "GoJS实例--改变共享颜色", {
margin: 5
})
)); diagram.nodeTemplate =
$(go.Node, "Auto",
$(go.Shape, "RoundedRectangle",
{ fill: "white" }, // the default value if there is no modelData.color property
new go.Binding("fill", "color").ofModel()), // meaning a property of Model.modelData
$(go.TextBlock,
{ margin: 5 },
new go.Binding("text"))
);
// start all nodes yellow
diagram.model.modelData.color = "yellow"; diagram.model.nodeDataArray = [
{ text: "Alpha" },
{ text: "Beta" }
]; diagram.undoManager.isEnabled = true; changeColor = function () { // define a function named "changeColor" callable by button.onclick
diagram.model.commit(function (m) {
// alternate between lightblue and lightgreen colors
var oldcolor = m.modelData.color;
var newcolor = (oldcolor === "lightblue" ? "lightgreen" : "lightblue");
m.set(m.modelData, "color", newcolor);
}, "changed shared color");
}
</script>
</body>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>GoJS实例--TwoWay Binding双向数据绑定</title>
<style>
#myDiagramDiv {
width: 400px;
height: 500px;
background-color: #DAE4E4;
}
</style>
<script src="https://unpkg.com/gojs/release/go-debug.js"></script>
</head> <body>
<div id="myDiagramDiv"></div>
<button id="xxx" onclick="shiftNode()">改变节点位置</button>
<script>
var diagram = new go.Diagram("myDiagramDiv");
var $ = go.GraphObject.make;
diagram.add(
$(go.Node, "Auto",
$(go.Shape, "RoundedRectangle", {
fill: "lightblue"
}),
$(go.TextBlock, "GoJS实例--TwoWay Binding双向数据绑定，\n此例可用于外部页面改变节点样式", {
margin: 5
})
)); diagram.nodeTemplate =
$(go.Node, "Auto",
{ locationSpot: go.Spot.Center },
new go.Binding("location", "loc").makeTwoWay(), // TwoWay Binding
$(go.Shape, "RoundedRectangle",
{ fill: "lightblue", stroke: "blue", strokeWidth: 2 }),
$(go.TextBlock,
{ margin: 5 },
new go.Binding("text", "key"))
); var nodeDataArray = [
{ key: "Alpha", loc: new go.Point(90, 90) }
];
diagram.model = new go.GraphLinksModel(nodeDataArray); shiftNode = (function() { // 定义一个名为“shiftNode”的函数，该函数由button.onclick调用
// 所有的模型变更都应该发生在一个事务中
diagram.commit(function(d) {
var data = d.model.nodeDataArray[0]; // get the first node data
var node = d.findNodeForData(data); // 查找对应节点
var p = node.location.copy(); // 复制一个位置，一个点
p.x += 10;
if (p.x > 200) p.x = 0;
// ：改变节点.位置也会改变数据. 双向绑定loc属性
node.location = p;
// 显示由节点数据的“loc”属性持有的更新位置
document.getElementById("bindTwoWayData").textContent = data.loc.toString();
}, "shift node");
});
shiftNode(); // initialize everything
</script>
</body>
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