gojs
Version:
Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams
192 lines (182 loc) • 7.72 kB
HTML
<html>
<head>
<title>Connection Box Nodes</title>
<!-- Copyright 1998-2020 by Northwoods Software Corporation. -->
<meta name="description" content="Support link connections within a node as well as between nodes.">
<meta name="viewport" content="width=device-width, initial-scale=1">
<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",
{
initialContentAlignment: go.Spot.Center, // for v1.*
initialScale: 1.4,
"undoManager.isEnabled": true,
"linkingTool.direction": go.LinkingTool.ForwardsOnly,
"ModelChanged": function(e) { // just for demonstration purposes,
if (e.isTransactionFinished) { // show the model data in the page's TextArea
document.getElementById("mySavedModel").textContent = e.model.toJson();
}
}
});
myDiagram.nodeTemplate =
$(go.Node, "Table",
new go.Binding("location", "location", go.Point.parse).makeTwoWay(go.Point.stringify),
{
selectionObjectName: "BODY",
linkValidation: function(fromnode, fromport, tonode, toport, link) {
if (!fromport || !toport) return false;
if (fromnode === tonode) {
// inside a node must go from an input port to an output port
return fromport.portId[0] === "i" && toport.portId[0] === "o";
} else {
// between nodes the port colors must match
if (fromport.fill !== toport.fill) return false;
// between nodes must go from an output port to an input port
return fromport.portId[0] === "o" && toport.portId[0] === "i";
}
return true;
}
},
$(go.RowColumnDefinition, { column: 1, width: 70 }),
$(go.Shape,
{
name: "BODY",
row: 0, rowSpan: 99, column: 0, columnSpan: 3, stretch: go.GraphObject.Fill,
fill: "gray", strokeWidth: 0, margin: new go.Margin(0, 8)
},
),
$(go.TextBlock,
{ row: 0, columnSpan: 3, margin: new go.Margin(4, 2, 2, 2) },
new go.Binding("text")),
$(go.TextBlock,
{ row: 2, columnSpan: 3, margin: new go.Margin(4, 2, 2, 2) },
new go.Binding("text", "text2")),
$(go.Panel, "Table",
new go.Binding("itemArray", "inPorts"),
{
row: 1, column: 0,
defaultSeparatorPadding: new go.Margin(4, 0),
itemTemplate: // input ports
$(go.Panel, "TableRow",
{ background: "white" },
$(go.Shape,
{
width: 6, height: 6, strokeWidth: 0, margin: new go.Margin(2, 6, 2, 0),
fromSpot: go.Spot.Right, toSpot: go.Spot.Left,
fromLinkable: true, toLinkable: true,
fromLinkableSelfNode: true, toLinkableSelfNode: true, cursor: "pointer"
},
new go.Binding("portId", "row", function(r) { return "i" + r; }).ofObject(),
new go.Binding("fill", "", convertToColor))
)
}
),
$(go.Shape,
{
row: 1, column: 1, fill: "white", strokeWidth: 0,
stretch: go.GraphObject.Fill
}),
$(go.Panel, "Table",
new go.Binding("itemArray", "outPorts"),
{
row: 1, column: 2,
defaultSeparatorPadding: new go.Margin(4, 0),
itemTemplate: // output ports
$(go.Panel, "TableRow",
{ background: "white" },
$(go.Shape,
{
width: 6, height: 6, strokeWidth: 0, margin: new go.Margin(2, 0, 2, 6),
fromSpot: go.Spot.Right, toSpot: go.Spot.Left,
fromLinkable: true, toLinkable: true,
fromLinkableSelfNode: true, toLinkableSelfNode: true, cursor: "pointer"
},
new go.Binding("portId", "row", function(r) { return "o" + r; }).ofObject(),
new go.Binding("fill", "", convertToColor))
)
}
),
);
function convertToColor(n) {
switch (n) {
case "r": return "brown";
case "g": return "olivedrab";
case "b": return "cornflowerblue";
default: return "black";
}
}
myDiagram.linkTemplate =
$(go.Link,
{ relinkableFrom: true, relinkableTo: true },
$(go.Shape,
{ strokeWidth: 2 },
new go.Binding("stroke", "fromPort", function(p) {
return p.fill;
}).ofObject())
);
myDiagram.model = $(go.GraphLinksModel, {
linkFromPortIdProperty: "fpid",
linkToPortIdProperty: "tpid",
copiesArrays: true,
copiesArrayObjects: true,
nodeDataArray:
[
{
key: 1, text: "Alpha",
location: "0 0",
inPorts: ["r", "r", "r", "g", "b"],
outPorts: ["r", "g", "g", "b", "b"]
},
{
key: 2, text: "Beta",
location: "200 -80",
inPorts: ["r", "r", "g", "g", "b"],
outPorts: ["r", "r", "g", "g", "b"]
},
{
key: 3, text: "Gamma",
location: "200 80",
inPorts: ["r", "r", "g", "g", "b"],
outPorts: ["r", "r", "g", "g", "b"]
}
],
linkDataArray:
[
{ from: 1, fpid: "i0", to: 1, tpid: "o1" },
{ from: 1, fpid: "i1", to: 1, tpid: "o4" },
{ from: 1, fpid: "i2", to: 1, tpid: "o0" },
{ from: 1, fpid: "i3", to: 1, tpid: "o3" },
{ from: 1, fpid: "i4", to: 1, tpid: "o2" },
{ from: 1, fpid: "o0", to: 2, tpid: "i0" },
{ from: 1, fpid: "o2", to: 2, tpid: "i2" },
{ from: 1, fpid: "o2", to: 3, tpid: "i2" },
{ from: 1, fpid: "o3", to: 2, tpid: "i4" },
{ from: 1, fpid: "o3", to: 3, tpid: "i4" },
{ from: 2, fpid: "i0", to: 2, tpid: "o1" },
{ from: 2, fpid: "i2", to: 2, tpid: "o0" },
{ from: 2, fpid: "i4", to: 2, tpid: "o2" },
{ from: 3, fpid: "i2", to: 3, tpid: "o3" },
{ from: 3, fpid: "i1", to: 3, tpid: "o1" }
]
});
}
</script>
</head>
<body onload="init()">
<div id="sample">
<div id="myDiagramDiv" style="border: solid 1px black; width:100%; height:600px"></div>
<p>
You can draw new links between ports, both between nodes and within a node.
Between nodes, the link validation predicate requires new link connections to connect ports of the same color.
However, within a node, links may connect ports of different colors.
</p>
<textarea id="mySavedModel" style="width:100%;height:250px"></textarea>
</div>
</body>
</html>