sgojs
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Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams
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<b>GoJS</b>® Diagramming Components<br/>version 2.1.47<br/>by <a href="https://www.nwoods.com/">Northwoods Software®</a>
</div>
<div>
<h1>Class LinkLabelOnPathDraggingTool</h1>
</div>
</div>
</div>
</div>
</header>
<div class="tsd w-full max-w-screen-xl mx-auto pb-4">
<div class="row px-2 w-full">
<div class="col-8 col-content">
<section class="tsd-panel tsd-extension">
<p>
This is an extension and not part of the main GoJS library.
Note that the API for this class may change at any time.
If you intend to use an extension in production, you should copy the code to your own source directory.
Extensions can be found in the GoJS kit under the <code>extensions</code> or <code>extensionsTS</code> folders.
See the <a href="../../intro/extensions.html">Extensions intro page</a> for more information.
</p>
</section>
<section class="tsd-panel tsd-hierarchy">
<h3>Hierarchy</h3>
<ul class="tsd-hierarchy">
<li>
<a href="Tool.html" class="tsd-signature-type" data-tsd-kind="Class">Tool</a>
<ul class="tsd-hierarchy">
<li>
<span class="target">LinkLabelOnPathDraggingTool</span>
</li>
</ul>
</li>
</ul>
</section>
<section class="tsd-panel tsd-comment">
<div class="tsd-comment tsd-typography">
<p>The LinkLabelOnPathDraggingTool class lets the user move a label on a <a href="Link.html">Link</a> while keeping the label on the link's path.
This tool only works when the Link has a label marked by the "_isLinkLabel" property.</p>
<p>If you want to experiment with this extension, try the <a href="../../extensionsTS/LinkLabelOnPathDragging.html">Link Label On Path Dragging</a> sample.</p>
</div>
</section>
<section class="tsd-panel-group tsd-index-group">
<h2>Index</h2>
<section class="tsd-panel tsd-index-panel">
<div class="tsd-index-content">
<section class="tsd-index-section ">
<h3>Constructors</h3>
<ul class="tsd-index-list">
<li class="tsd-kind-constructor tsd-parent-kind-class tsd-is-overwrite"><a href="LinkLabelOnPathDraggingTool.html#constructor" class="tsd-kind-icon">constructor</a></li>
</ul>
</section>
<section class="tsd-index-section ">
<h3>Properties</h3>
<ul class="tsd-index-list">
<li class="tsd-kind-property tsd-parent-kind-class"><a href="LinkLabelOnPathDraggingTool.html#label" class="tsd-kind-icon">label</a></li>
</ul>
</section>
<section class="tsd-index-section ">
<h3>Methods</h3>
<ul class="tsd-index-list">
<li class="tsd-kind-method tsd-parent-kind-class tsd-is-overwrite"><a href="LinkLabelOnPathDraggingTool.html#canStart" class="tsd-kind-icon">can<wbr>Start</a></li>
<li class="tsd-kind-method tsd-parent-kind-class tsd-is-overwrite"><a href="LinkLabelOnPathDraggingTool.html#doActivate" class="tsd-kind-icon">do<wbr>Activate</a></li>
<li class="tsd-kind-method tsd-parent-kind-class tsd-is-overwrite"><a href="LinkLabelOnPathDraggingTool.html#doCancel" class="tsd-kind-icon">do<wbr>Cancel</a></li>
<li class="tsd-kind-method tsd-parent-kind-class tsd-is-overwrite"><a href="LinkLabelOnPathDraggingTool.html#doDeactivate" class="tsd-kind-icon">do<wbr>Deactivate</a></li>
<li class="tsd-kind-method tsd-parent-kind-class tsd-is-overwrite"><a href="LinkLabelOnPathDraggingTool.html#doMouseMove" class="tsd-kind-icon">do<wbr>Mouse<wbr>Move</a></li>
<li class="tsd-kind-method tsd-parent-kind-class tsd-is-overwrite"><a href="LinkLabelOnPathDraggingTool.html#doMouseUp" class="tsd-kind-icon">do<wbr>Mouse<wbr>Up</a></li>
<li class="tsd-kind-method tsd-parent-kind-class tsd-is-overwrite"><a href="LinkLabelOnPathDraggingTool.html#doStop" class="tsd-kind-icon">do<wbr>Stop</a></li>
<li class="tsd-kind-method tsd-parent-kind-class"><a href="LinkLabelOnPathDraggingTool.html#findLabel" class="tsd-kind-icon">find<wbr>Label</a></li>
<li class="tsd-kind-method tsd-parent-kind-class"><a href="LinkLabelOnPathDraggingTool.html#updateSegmentOffset" class="tsd-kind-icon">update<wbr>Segment<wbr>Offset</a></li>
</ul>
</section>
</div>
</section>
</section>
<section class="tsd-panel-group tsd-member-group ">
<h2>Constructors</h2>
<section class="tsd-panel tsd-member tsd-kind-constructor tsd-parent-kind-class tsd-is-overwrite">
<a name="constructor" class="tsd-anchor"></a>
<h3>
constructor
</h3>
<ul class="tsd-signatures tsd-kind-constructor tsd-parent-kind-class tsd-is-overwrite">
<li class="tsd-signature tsd-kind-icon">new <wbr>Link<wbr>Label<wbr>OnPath<wbr>Dragging<wbr>Tool<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="LinkLabelOnPathDraggingTool.html" class="tsd-signature-type" data-tsd-kind="Class">LinkLabelOnPathDraggingTool</a></li>
</ul>
<ul class="tsd-descriptions">
<li class="tsd-description">
<div class="tsd-comment tsd-typography">
<p>Constructs a LinkLabelOnPathDraggingTool and sets the name for the tool.</p>
</div>
<h4 class="tsd-returns-title">Returns <a href="LinkLabelOnPathDraggingTool.html" class="tsd-signature-type" data-tsd-kind="Class">LinkLabelOnPathDraggingTool</a></h4>
</li>
</ul>
</section>
</section>
<section class="tsd-panel-group tsd-member-group ">
<h2>Properties</h2>
<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class">
<a name="label" class="tsd-anchor"></a>
<h3>
label
<span class="tsd-signature-symbol">: </span><a href="GraphObject.html" class="tsd-signature-type" data-tsd-kind="Class">GraphObject</a> </h3>
<div class="tsd-comment tsd-typography">
<p>The label being dragged.</p>
</div>
</section>
</section>
<section class="tsd-panel-group tsd-member-group ">
<h2>Methods</h2>
<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
<a name="canStart" class="tsd-anchor"></a>
<h3>
<span class="tsd-flag ts-flagOverride">Override</span>
can<wbr>Start
</h3>
<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
<li class="tsd-signature tsd-kind-icon">can<wbr>Start<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
</ul>
<ul class="tsd-descriptions">
<li class="tsd-description">
<div class="tsd-comment tsd-typography">
<p>This tool can only start if the mouse has moved enough so that it is not a click,
and if the mouse down point is on a GraphObject "label" in a Link Panel,
as determined by <a href="LinkLabelOnPathDraggingTool.html#findLabel">findLabel</a>.</p>
</div>
<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
</li>
</ul>
</section>
<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
<a name="doActivate" class="tsd-anchor"></a>
<h3>
<span class="tsd-flag ts-flagOverride">Override</span>
do<wbr>Activate
</h3>
<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
<li class="tsd-signature tsd-kind-icon">do<wbr>Activate<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
</ul>
<ul class="tsd-descriptions">
<li class="tsd-description">
<div class="tsd-comment tsd-typography">
<p>Start a transaction, call findLabel and remember it as the "label" property,
and remember the original values for the label's segment properties.</p>
</div>
<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
</li>
</ul>
</section>
<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
<a name="doCancel" class="tsd-anchor"></a>
<h3>
<span class="tsd-flag ts-flagOverride">Override</span>
do<wbr>Cancel
</h3>
<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
<li class="tsd-signature tsd-kind-icon">do<wbr>Cancel<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
</ul>
<ul class="tsd-descriptions">
<li class="tsd-description">
<div class="tsd-comment tsd-typography">
<p>Restore the label's original value for GraphObject.segment... properties.</p>
</div>
<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
</li>
</ul>
</section>
<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
<a name="doDeactivate" class="tsd-anchor"></a>
<h3>
<span class="tsd-flag ts-flagOverride">Override</span>
do<wbr>Deactivate
</h3>
<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
<li class="tsd-signature tsd-kind-icon">do<wbr>Deactivate<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
</ul>
<ul class="tsd-descriptions">
<li class="tsd-description">
<div class="tsd-comment tsd-typography">
<p>Stop any ongoing transaction.</p>
</div>
<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
</li>
</ul>
</section>
<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
<a name="doMouseMove" class="tsd-anchor"></a>
<h3>
<span class="tsd-flag ts-flagOverride">Override</span>
do<wbr>Mouse<wbr>Move
</h3>
<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
<li class="tsd-signature tsd-kind-icon">do<wbr>Mouse<wbr>Move<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
</ul>
<ul class="tsd-descriptions">
<li class="tsd-description">
<div class="tsd-comment tsd-typography">
<p>During the drag, call <a href="LinkLabelOnPathDraggingTool.html#updateSegmentOffset">updateSegmentOffset</a> in order to set the segment... properties of the label.</p>
</div>
<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
</li>
</ul>
</section>
<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
<a name="doMouseUp" class="tsd-anchor"></a>
<h3>
<span class="tsd-flag ts-flagOverride">Override</span>
do<wbr>Mouse<wbr>Up
</h3>
<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
<li class="tsd-signature tsd-kind-icon">do<wbr>Mouse<wbr>Up<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
</ul>
<ul class="tsd-descriptions">
<li class="tsd-description">
<div class="tsd-comment tsd-typography">
<p>At the end of the drag, update the segment properties of the label and finish the tool,
completing a transaction.</p>
</div>
<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
</li>
</ul>
</section>
<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
<a name="doStop" class="tsd-anchor"></a>
<h3>
<span class="tsd-flag ts-flagOverride">Override</span>
do<wbr>Stop
</h3>
<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
<li class="tsd-signature tsd-kind-icon">do<wbr>Stop<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
</ul>
<ul class="tsd-descriptions">
<li class="tsd-description">
<div class="tsd-comment tsd-typography">
<p>Clear any reference to a label element.</p>
</div>
<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
</li>
</ul>
</section>
<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
<a name="findLabel" class="tsd-anchor"></a>
<h3>
find<wbr>Label
</h3>
<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
<li class="tsd-signature tsd-kind-icon">find<wbr>Label<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="GraphObject.html" class="tsd-signature-type" data-tsd-kind="Class">GraphObject</a></li>
</ul>
<ul class="tsd-descriptions">
<li class="tsd-description">
<div class="tsd-comment tsd-typography">
<p>From the GraphObject at the mouse point, search up the visual tree until we get to
an object that has the "_isLinkLabel" property set to true and that is an immediate child of a Link Panel.</p>
</div>
<h4 class="tsd-returns-title">Returns <a href="GraphObject.html" class="tsd-signature-type" data-tsd-kind="Class">GraphObject</a></h4>
<p>This returns null if no such label is at the mouse down point.</p>
</li>
</ul>
</section>
<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class">
<a name="updateSegmentOffset" class="tsd-anchor"></a>
<h3>
update<wbr>Segment<wbr>Offset
</h3>
<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class">
<li class="tsd-signature tsd-kind-icon">update<wbr>Segment<wbr>Offset<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
</ul>
<ul class="tsd-descriptions">
<li class="tsd-description">
<div class="tsd-comment tsd-typography">
<p>Save the label's <a href="GraphObject.html#segmentFraction">GraphObject.segmentFraction</a>
at the closest point to the mouse.</p>
</div>
<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
</li>
</ul>
</section>
</section>
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<ul class="before-current">
</ul>
<ul class="current">
<li class="current tsd-kind-class tsd-is-extension">
<a href="LinkLabelOnPathDraggingTool.html" class="tsd-kind-icon">Link<wbr>Label<wbr>OnPath<wbr>Dragging<wbr>Tool</a>
<ul>
<li class=" tsd-kind-constructor tsd-parent-kind-class tsd-is-overwrite">
<a href="LinkLabelOnPathDraggingTool.html#constructor" class="tsd-kind-icon">constructor</a>
</li>
<li class=" tsd-kind-property tsd-parent-kind-class">
<a href="LinkLabelOnPathDraggingTool.html#label" class="tsd-kind-icon">label</a>
</li>
<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
<a href="LinkLabelOnPathDraggingTool.html#canStart" class="tsd-kind-icon">can<wbr>Start</a>
</li>
<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
<a href="LinkLabelOnPathDraggingTool.html#doActivate" class="tsd-kind-icon">do<wbr>Activate</a>
</li>
<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
<a href="LinkLabelOnPathDraggingTool.html#doCancel" class="tsd-kind-icon">do<wbr>Cancel</a>
</li>
<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
<a href="LinkLabelOnPathDraggingTool.html#doDeactivate" class="tsd-kind-icon">do<wbr>Deactivate</a>
</li>
<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
<a href="LinkLabelOnPathDraggingTool.html#doMouseMove" class="tsd-kind-icon">do<wbr>Mouse<wbr>Move</a>
</li>
<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
<a href="LinkLabelOnPathDraggingTool.html#doMouseUp" class="tsd-kind-icon">do<wbr>Mouse<wbr>Up</a>
</li>
<li class=" tsd-kind-method tsd-parent-kind-class tsd-is-overwrite">
<a href="LinkLabelOnPathDraggingTool.html#doStop" class="tsd-kind-icon">do<wbr>Stop</a>
</li>
<li class=" tsd-kind-method tsd-parent-kind-class">
<a href="LinkLabelOnPathDraggingTool.html#findLabel" class="tsd-kind-icon">find<wbr>Label</a>
</li>
<li class=" tsd-kind-method tsd-parent-kind-class">
<a href="LinkLabelOnPathDraggingTool.html#updateSegmentOffset" class="tsd-kind-icon">update<wbr>Segment<wbr>Offset</a>
</li>
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topnavList.classList.toggle("hidden");
document.getElementById("topnavOpen").classList.toggle("hidden");
document.getElementById("topnavClosed").classList.toggle("hidden");
});
</script>
</body>
</html>