207 lines
9.1 KiB
HTML
207 lines
9.1 KiB
HTML
<!DOCTYPE html>
|
|
<html>
|
|
<head>
|
|
<meta name="viewport" content="width=device-width, initial-scale=1">
|
|
<title>Mapping Selectable Fields of Records</title>
|
|
<meta name="description" content="Support selecting items inside nodes." />
|
|
<!-- Copyright 1998-2017 by Northwoods Software Corporation. -->
|
|
<meta charset="UTF-8">
|
|
<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; // for conciseness in defining templates
|
|
|
|
myDiagram =
|
|
$(go.Diagram, "myDiagramDiv",
|
|
{
|
|
initialContentAlignment: go.Spot.Center,
|
|
validCycle: go.Diagram.CycleNotDirected, // don't allow loops
|
|
// For this sample, automatically show the state of the diagram's model on the page
|
|
"ModelChanged": function(e) {
|
|
if (e.isTransactionFinished) showModel();
|
|
},
|
|
"undoManager.isEnabled": true
|
|
});
|
|
|
|
// 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 =
|
|
$(go.Panel, "TableRow", // this Panel is a row in the containing Table
|
|
new go.Binding("portId", "name"), // this Panel is a "port"
|
|
{
|
|
background: "transparent", // so this port's background can be picked by the mouse
|
|
fromSpot: go.Spot.LeftRightSides, // links only go from the right side to the left side
|
|
toSpot: go.Spot.LeftRightSides,
|
|
// allow drawing links from or to this port:
|
|
fromLinkable: true, toLinkable: true
|
|
},
|
|
{ // allow the user to select items -- the background color indicates whether "selected"
|
|
//?? maybe this should be more sophisticated than simple toggling of selection
|
|
click: function(e, item) {
|
|
// assume "transparent" means not "selected", for items
|
|
var oldskips = item.diagram.skipsUndoManager;
|
|
item.diagram.skipsUndoManager = true;
|
|
if (item.background === "transparent") {
|
|
item.background = "dodgerblue";
|
|
} else {
|
|
item.background = "transparent";
|
|
}
|
|
item.diagram.skipsUndoManager = oldskips;
|
|
}
|
|
},
|
|
$(go.Shape,
|
|
{ width: 12, height: 12, column: 0, strokeWidth: 2, margin: 4,
|
|
// but disallow drawing links from or to this shape:
|
|
fromLinkable: false, toLinkable: false },
|
|
new go.Binding("figure", "figure"),
|
|
new go.Binding("fill", "color")),
|
|
$(go.TextBlock,
|
|
{ margin: new go.Margin(0, 2), column: 1, font: "bold 13px sans-serif",
|
|
// and disallow drawing links from or to this text:
|
|
fromLinkable: false, toLinkable: false },
|
|
new go.Binding("text", "name")),
|
|
$(go.TextBlock,
|
|
{ margin: new go.Margin(0, 2), column: 2, font: "13px sans-serif" },
|
|
new go.Binding("text", "info"))
|
|
);
|
|
|
|
// This template represents a whole "record".
|
|
myDiagram.nodeTemplate =
|
|
$(go.Node, "Auto",
|
|
new go.Binding("location", "loc", go.Point.parse).makeTwoWay(go.Point.stringify),
|
|
// this rectangular shape surrounds the content of the node
|
|
$(go.Shape,
|
|
{ fill: "#EEEEEE" }),
|
|
// the content consists of a header and a list of items
|
|
$(go.Panel, "Vertical",
|
|
// this is the header for the whole node
|
|
$(go.Panel, "Auto",
|
|
{ stretch: go.GraphObject.Horizontal }, // as wide as the whole node
|
|
$(go.Shape,
|
|
{ fill: "#1570A6", stroke: null }),
|
|
$(go.TextBlock,
|
|
{
|
|
alignment: go.Spot.Center,
|
|
margin: 3,
|
|
stroke: "white",
|
|
textAlign: "center",
|
|
font: "bold 12pt sans-serif"
|
|
},
|
|
new go.Binding("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
|
|
$(go.Panel, "Table",
|
|
{
|
|
name: "TABLE",
|
|
padding: 2,
|
|
minSize: new go.Size(100, 10),
|
|
defaultStretch: go.GraphObject.Horizontal,
|
|
itemTemplate: fieldTemplate
|
|
},
|
|
new go.Binding("itemArray", "fields")
|
|
) // end Table Panel of items
|
|
) // end Vertical Panel
|
|
); // end Node
|
|
|
|
myDiagram.linkTemplate =
|
|
$(go.Link,
|
|
{ relinkableFrom: true, relinkableTo: true, toShortLength: 4 }, // let user reconnect links
|
|
$(go.Shape, { strokeWidth: 1.5 }),
|
|
$(go.Shape, { toArrow: "Standard", stroke: null })
|
|
);
|
|
|
|
myDiagram.model =
|
|
$(go.GraphLinksModel,
|
|
{
|
|
linkFromPortIdProperty: "fromPort",
|
|
linkToPortIdProperty: "toPort",
|
|
nodeDataArray: [
|
|
{ key: "Record1",
|
|
fields: [
|
|
{ name: "field1", info: "", 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",
|
|
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" }
|
|
]
|
|
});
|
|
|
|
// this is a bit inefficient, but should be OK for normal-sized graphs with reasonable numbers of items per node
|
|
function findAllSelectedItems() {
|
|
var items = [];
|
|
for (var nit = myDiagram.nodes; nit.next(); ) {
|
|
var node = nit.value;
|
|
var table = node.findObject("TABLE");
|
|
if (table) {
|
|
for (var iit = table.elements; iit.next(); ) {
|
|
var itempanel = iit.value;
|
|
if (itempanel.background !== "transparent") items.push(itempanel);
|
|
}
|
|
}
|
|
}
|
|
return items;
|
|
}
|
|
|
|
// Override the standard CommandHandler deleteSelection behavior.
|
|
// If there are any selected items, delete them instead of deleting any selected nodes or links.
|
|
myDiagram.commandHandler.canDeleteSelection = function() {
|
|
// true if there are any selected deletable nodes or links,
|
|
// or if there are any selected items within nodes
|
|
return go.CommandHandler.prototype.canDeleteSelection.call(myDiagram.commandHandler) ||
|
|
findAllSelectedItems().length > 0;
|
|
};
|
|
|
|
myDiagram.commandHandler.deleteSelection = function() {
|
|
var items = findAllSelectedItems();
|
|
if (items.length > 0) { // if there are any selected items, delete them
|
|
myDiagram.startTransaction("delete items");
|
|
for (var i = 0; i < items.length; i++) {
|
|
var panel = items[i];
|
|
var nodedata = panel.part.data;
|
|
var itemarray = nodedata.fields;
|
|
var itemdata = panel.data;
|
|
var itemindex = itemarray.indexOf(itemdata);
|
|
myDiagram.model.removeArrayItem(itemarray, itemindex);
|
|
}
|
|
myDiagram.commitTransaction("delete items");
|
|
} else { // otherwise just delete nodes and/or links, as usual
|
|
go.CommandHandler.prototype.deleteSelection.call(myDiagram.commandHandler);
|
|
}
|
|
};
|
|
|
|
showModel(); // show the diagram's initial model
|
|
|
|
function showModel() {
|
|
document.getElementById("mySavedModel").textContent = myDiagram.model.toJson();
|
|
}
|
|
}
|
|
</script>
|
|
</head>
|
|
<body onload="init()">
|
|
<div id="sample">
|
|
<div id="myDiagramDiv" style="border: solid 1px black; width:100%; height:300px"></div>
|
|
<p>This shows a variable number of selectable "fields" for each "record".</p>
|
|
<p>Draw new links by dragging from the background of any field.
|
|
Reconnect a selected link by dragging its diamond-shaped handle.
|
|
The user can delete a selected field.</p>
|
|
<p>The model data, automatically updated after each change or undo or redo:</p>
|
|
<textarea id="mySavedModel" style="width:100%;height:300px"></textarea>
|
|
<p>This sample was derived from the <a href="records.html">Records</a> sample.</p>
|
|
</div>
|
|
</body>
|
|
</html> |