<script src="https://gojs.net/latest/release/go.js"></script>
<body>
<div id="sample">
<h1>Template with triangle image with text on top</h1>
<div id="myDiagramDiv"></div>
</div>
</body>#myDiagramDiv {
border: solid 1px black;
width:1200px;
height:700px;
}var $ = go.GraphObject.make; // for conciseness in defining templates
var myLastClick = 0;
myDiagram = $(
go.Diagram,
"myDiagramDiv", // create a Diagram for the DIV HTML element
{
// allow double-click in background to create a new node
"clickCreatingTool.archetypeNodeData": { text: "Node", color: "white" },
// allow Ctrl-G to call groupSelection()
"commandHandler.archetypeGroupData": {
text: "Group",
isGroup: true,
color: "blue"
},
// enable undo & redo
"undoManager.isEnabled": true
}
);
// Define the appearance and behavior for Nodes:
// First, define the shared context menu for all Nodes, Links, and Groups.
// To simplify this code we define a function for creating a context menu button:
function makeButton(text, action, visiblePredicate) {
return $(
"ContextMenuButton",
$(go.TextBlock, text),
{ click: action },
// don't bother with binding GraphObject.visible if there's no predicate
visiblePredicate
? new go.Binding("visible", "", function (o, e) {
return o.diagram ? visiblePredicate(o, e) : false;
}).ofObject()
: {}
);
}
// a context menu is an Adornment with a bunch of buttons in them
var partContextMenu = $(
"ContextMenu",
makeButton("Properties", function (e, obj) {
// OBJ is this Button
var contextmenu = obj.part; // the Button is in the context menu Adornment
var part = contextmenu.adornedPart; // the adornedPart is the Part that the context menu adorns
// now can do something with PART, or with its data, or with the Adornment (the context menu)
if (part instanceof go.Link) alert(linkInfo(part.data));
else if (part instanceof go.Group) alert(groupInfo(contextmenu));
else alert(nodeInfo(part.data));
}),
makeButton(
"Cut",
function (e, obj) {
e.diagram.commandHandler.cutSelection();
},
function (o) {
return o.diagram.commandHandler.canCutSelection();
}
),
makeButton(
"Copy",
function (e, obj) {
e.diagram.commandHandler.copySelection();
},
function (o) {
return o.diagram.commandHandler.canCopySelection();
}
),
makeButton(
"Paste",
function (e, obj) {
e.diagram.commandHandler.pasteSelection(
e.diagram.toolManager.contextMenuTool.mouseDownPoint
);
},
function (o) {
return o.diagram.commandHandler.canPasteSelection(
o.diagram.toolManager.contextMenuTool.mouseDownPoint
);
}
),
makeButton(
"Delete",
function (e, obj) {
e.diagram.commandHandler.deleteSelection();
},
function (o) {
return o.diagram.commandHandler.canDeleteSelection();
}
),
makeButton(
"Undo",
function (e, obj) {
e.diagram.commandHandler.undo();
},
function (o) {
return o.diagram.commandHandler.canUndo();
}
),
makeButton(
"Redo",
function (e, obj) {
e.diagram.commandHandler.redo();
},
function (o) {
return o.diagram.commandHandler.canRedo();
}
),
makeButton(
"Group",
function (e, obj) {
e.diagram.commandHandler.groupSelection();
},
function (o) {
return o.diagram.commandHandler.canGroupSelection();
}
),
makeButton(
"Ungroup",
function (e, obj) {
e.diagram.commandHandler.ungroupSelection();
},
function (o) {
return o.diagram.commandHandler.canUngroupSelection();
}
)
);
function nodeInfo(d) {
// Tooltip info for a node data object
var str = "Node " + d.key + ": " + d.text + "\n";
if (d.group) str += "member of " + d.group;
else str += "top-level node";
return str;
}
// These nodes have text surrounded by a rounded rectangle
// whose fill color is bound to the node data.
// The user can drag a node by dragging its TextBlock label.
// Dragging from the Shape will start drawing a new link.
myDiagram.nodeTemplate = $(
go.Node,
"Auto",
{
locationSpot: go.Spot.Center,
click: function (e, obj) {
if (e.clickCount === 1) {
var time = e.timestamp;
myLastClick = time;
setTimeout(function () {
if (myLastClick === time) {
alert("Node single clicked");
}
}, 500);
}
},
doubleClick: function (e, obj) {
myLastClick = e.timestamp;
alert("Node double clicked.");
}
},
$(
go.Shape,
"RoundedRectangle",
{
fill: "white", // the default fill, if there is no data bound value
portId: "",
cursor: "pointer", // the Shape is the port, not the whole Node
// allow all kinds of links from and to this port
fromLinkable: true,
fromLinkableSelfNode: true,
fromLinkableDuplicates: true,
toLinkable: true,
toLinkableSelfNode: true,
toLinkableDuplicates: true
},
new go.Binding("fill", "color")
),
$(
go.TextBlock,
{
font: "bold 14px sans-serif",
stroke: "#333",
margin: 6, // make some extra space for the shape around the text
isMultiline: false, // don't allow newlines in text
editable: true // allow in-place editing by user
},
new go.Binding("text", "text").makeTwoWay()
), // the label shows the node data's text
{
// this tooltip Adornment is shared by all nodes
toolTip: $(
"ToolTip",
$(
go.TextBlock,
{ margin: 4 }, // the tooltip shows the result of calling nodeInfo(data)
new go.Binding("text", "", nodeInfo)
)
),
// this context menu Adornment is shared by all nodes
contextMenu: partContextMenu
}
);
// Define the appearance and behavior for Links:
function linkInfo(d) {
// Tooltip info for a link data object
return "Link:\nfrom " + d.from + " to " + d.to;
}
// The link shape and arrowhead have their stroke brush data bound to the "color" property
myDiagram.linkTemplate = $(
go.Link,
{ toShortLength: 3, relinkableFrom: true, relinkableTo: true }, // allow the user to relink existing links
$(go.Shape, { strokeWidth: 2 }, new go.Binding("stroke", "color")),
$(
go.Shape,
{ toArrow: "Standard", stroke: null },
new go.Binding("fill", "color")
),
{
// this tooltip Adornment is shared by all links
toolTip: $(
"ToolTip",
$(
go.TextBlock,
{ margin: 4 }, // the tooltip shows the result of calling linkInfo(data)
new go.Binding("text", "", linkInfo)
)
),
// the same context menu Adornment is shared by all links
contextMenu: partContextMenu
}
);
// Define the appearance and behavior for Groups:
function groupInfo(adornment) {
// takes the tooltip or context menu, not a group node data object
var g = adornment.adornedPart; // get the Group that the tooltip adorns
var mems = g.memberParts.count;
var links = 0;
g.memberParts.each(function (part) {
if (part instanceof go.Link) links++;
});
return (
"Group " +
g.data.key +
": " +
g.data.text +
"\n" +
mems +
" members including " +
links +
" links"
);
}
// Groups consist of a title in the color given by the group node data
// above a translucent gray rectangle surrounding the member parts
myDiagram.groupTemplate = $(
go.Group,
"Vertical",
{
selectionObjectName: "PANEL", // selection handle goes around shape, not label
ungroupable: true // enable Ctrl-Shift-G to ungroup a selected Group
},
$(
go.TextBlock,
{
//alignment: go.Spot.Right,
font: "bold 19px sans-serif",
isMultiline: false, // don't allow newlines in text
editable: true // allow in-place editing by user
},
new go.Binding("text", "text").makeTwoWay(),
new go.Binding("stroke", "color")
),
$(
go.Panel,
"Auto",
{ name: "PANEL" },
$(
go.Shape,
"Rectangle", // the rectangular shape around the members
{
fill: "rgba(128,128,128,0.2)",
stroke: "gray",
strokeWidth: 3,
portId: "",
cursor: "pointer", // the Shape is the port, not the whole Node
// allow all kinds of links from and to this port
fromLinkable: true,
fromLinkableSelfNode: true,
fromLinkableDuplicates: true,
toLinkable: true,
toLinkableSelfNode: true,
toLinkableDuplicates: true
}
),
$(go.Placeholder, { margin: 10, background: "transparent" }) // represents where the members are
),
{
// this tooltip Adornment is shared by all groups
toolTip: $(
"ToolTip",
$(
go.TextBlock,
{ margin: 4 },
// bind to tooltip, not to Group.data, to allow access to Group properties
new go.Binding("text", "", groupInfo).ofObject()
)
),
// the same context menu Adornment is shared by all groups
contextMenu: partContextMenu
}
);
// Define the behavior for the Diagram background:
function diagramInfo(model) {
// Tooltip info for the diagram's model
return (
"Model:\n" +
model.nodeDataArray.length +
" nodes, " +
model.linkDataArray.length +
" links"
);
}
// provide a tooltip for the background of the Diagram, when not over any Part
myDiagram.toolTip = $(
"ToolTip",
$(go.TextBlock, { margin: 4 }, new go.Binding("text", "", diagramInfo))
);
// provide a context menu for the background of the Diagram, when not over any Part
myDiagram.contextMenu = $(
"ContextMenu",
makeButton(
"Paste",
function (e, obj) {
e.diagram.commandHandler.pasteSelection(
e.diagram.toolManager.contextMenuTool.mouseDownPoint
);
},
function (o) {
return o.diagram.commandHandler.canPasteSelection(
o.diagram.toolManager.contextMenuTool.mouseDownPoint
);
}
),
makeButton(
"Undo",
function (e, obj) {
e.diagram.commandHandler.undo();
},
function (o) {
return o.diagram.commandHandler.canUndo();
}
),
makeButton(
"Redo",
function (e, obj) {
e.diagram.commandHandler.redo();
},
function (o) {
return o.diagram.commandHandler.canRedo();
}
)
);
// Create the Diagram's Model:
var nodeDataArray = [
{ key: 1, text: "Alpha", color: "lightblue" },
{ key: 2, text: "Beta", color: "orange" },
{ key: 3, text: "Gamma", color: "lightgreen", group: 5 },
{ key: 4, text: "Delta", color: "pink", group: 5 },
{ key: 5, text: "Epsilon", color: "green", isGroup: true }
];
var linkDataArray = [
{ from: 1, to: 2, color: "blue" },
{ from: 2, to: 2 },
{ from: 3, to: 4, color: "green" },
{ from: 3, to: 1, color: "purple" }
];
myDiagram.model = new go.GraphLinksModel(nodeDataArray, linkDataArray);
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