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Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams
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<html class="default"><head><meta charSet="utf-8"/><meta http-equiv="x-ua-compatible" content="IE=edge"/><title>Transaction | GoJS API</title><meta name="description" content="Documentation for GoJS API"/><meta name="viewport" content="width=device-width, initial-scale=1"/><link rel="stylesheet" href="../../assets/css/style.css"/><link rel="stylesheet" href="../assets/style-tsd.css"/><link rel="stylesheet" href="../assets/highlight.css"/><script async src="../assets/search.js" id="search-script"></script></head><body><script>document.body.classList.add(localStorage.getItem("tsd-theme") || "os")</script><header><nav id="navTop" class="w-full z-30 top-0 text-white bg-nwoods-primary"><div class="w-full container max-w-screen-lg mx-auto flex flex-wrap sm:flex-nowrap items-center justify-between mt-0 py-2"><div class="md:pl-4"><a class="text-white hover:text-white no-underline hover:no-underline\n font-bold text-2xl lg:text-4xl rounded-lg hover:bg-nwoods-secondary" href="../../index.html"><h1 class="my-0 p-1 leading-none">GoJS</h1></a></div><button id="topnavButton" class="rounded-lg sm:hidden focus:outline-none focus:ring" aria-label="Navigation"><svg fill="currentColor" viewBox="0 0 20 20" class="w-6 h-6"><path id="topnavOpen" fill-rule="evenodd" d="M3 5a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM3 10a1 1 0 011-1h12a1 1 0 110 2H4a1 1 0 01-1-1zM9 15a1 1 0 011-1h6a1 1 0 110 2h-6a1 1 0 01-1-1z" clip-rule="evenodd"></path><path id="topnavClosed" class="hidden" fill-rule="evenodd" d="M4.293 4.293a1 1 0 011.414 0L10 8.586l4.293-4.293a1 1 0 111.414 1.414L11.414 10l4.293 4.293a1 1 0 01-1.414 1.414L10 11.414l-4.293 4.293a1 1 0 01-1.414-1.414L8.586 10 4.293 5.707a1 1 0 010-1.414z" clip-rule="evenodd"></path></svg></button><div id="topnavList" class="hidden sm:block items-center w-auto mt-0 text-white p-0 z-20"><ul class="list-reset list-none font-semibold flex justify-end flex-wrap sm:flex-nowrap items-center px-0 pb-0"><li class="p-1 sm:p-0"><a class="topnav-link" href="../../learn/index.html">Learn</a></li><li class="p-1 sm:p-0"><a class="topnav-link" href="../../samples/index.html">Samples</a></li><li class="p-1 sm:p-0"><a class="topnav-link" href="../../intro/index.html">Intro</a></li><li class="p-1 sm:p-0"><a class="topnav-link" href="../../api/index.html">API</a></li><li class="p-1 sm:p-0"><a class="topnav-link" href="https://www.nwoods.com/products/register.html">Register</a></li><li class="p-1 sm:p-0"><a class="topnav-link" href="../../download.html">Download</a></li><li class="p-1 sm:p-0"><a class="topnav-link" href="https://forum.nwoods.com/c/gojs/11">Forum</a></li><li class="p-1 sm:p-0"><a class="topnav-link" href="https://www.nwoods.com/contact.html" target="_blank" rel="noopener" id="contactBtn">Contact</a></li><li class="p-1 sm:p-0"><a class="topnav-link" href="https://www.nwoods.com/sales/index.html" target="_blank" rel="noopener" id="buyBtn">Buy</a></li></ul></div></div><hr class="border-b border-gray-600 opacity-50 my-0 py-0"/></nav><div class="tsd-page-header"><div class="tsd-page-toolbar"><div class="w-full max-w-screen-xl mx-auto px-2"><div class="table-wrap"><div class="table-cell" id="tsd-search" data-base=".."><div class="field"><label for="tsd-search-field" class="tsd-widget search no-caption">Search</label><input type="text" id="tsd-search-field"/></div><ul class="results"><li class="state loading">Preparing search index...</li><li class="state failure">The search index is not available</li></ul><a href="../index.html" class="title">GoJS API</a></div><div class="table-cell" id="tsd-widgets"><div id="tsd-filter"><a href="#" class="tsd-widget options no-caption" data-toggle="options">Options</a><div class="tsd-filter-group"><div class="tsd-select" id="tsd-filter-visibility"><span class="tsd-select-label">All</span><ul class="tsd-select-list"><li data-value="public">Public</li><li data-value="protected">Public/Protected</li><li data-value="private" class="selected">All</li></ul></div> <input type="checkbox" id="tsd-filter-inherited"/><label class="tsd-widget" for="tsd-filter-inherited">Inherited</label></div></div><a href="#" class="tsd-widget menu no-caption" data-toggle="menu">Menu</a></div></div></div></div></div><div class="tsd-page-title"><div class="w-full max-w-screen-xl mx-auto px-2"><div class="top-copyright"><b>GoJS</b>® Diagramming Components<br/>version 2.3.8<br/>by <a href="https://www.nwoods.com/">Northwoods Software®</a></div><div><h1>Class Transaction </h1></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-hierarchy"><h3>Hierarchy</h3><ul class="tsd-hierarchy"><li><span class="target">Transaction</span></li></ul></section><section class="tsd-panel tsd-comment"><div class="tsd-comment tsd-typography">
<p>A Transaction holds a list of <a href="ChangedEvent.html">ChangedEvent</a>s collected during a transaction,
as the value of the read-only <a href="Transaction.html#changes">changes</a> property.</p>
<div><p>Start a transaction by calling <a href="UndoManager.html#startTransaction">UndoManager.startTransaction</a>
(or <a href="Model.html#startTransaction">Model.startTransaction</a> or <a href="Diagram.html#startTransaction">Diagram.startTransaction</a>, which call that method).
Be sure to finish a transaction with a matching call to <a href="UndoManager.html#commitTransaction">UndoManager.commitTransaction</a>
(or <a href="Model.html#commitTransaction">Model.commitTransaction</a> or <a href="Diagram.html#commitTransaction">Diagram.commitTransaction</a>),
or a call to <a href="UndoManager.html#rollbackTransaction">UndoManager.rollbackTransaction</a>
(or the same named methods on <a href="Model.html">Model</a> or <a href="Diagram.html">Diagram</a>).</p>
<p>If you are performing multiple or repeated changes to a model or diagram,
surround all of the code with calls to start and commit the transaction --
do not perform repeated calls to start-commit-start-commit.
Typically each change caused by the user, such as a button click or a change of focus or a mouse drag,
should perform one transaction in which all changes are made.
All of the predefined commands and tools perform transactions.</p>
<p>Undoing or redoing a transaction is done by calling <a href="UndoManager.html#undo">UndoManager.undo</a> or <a href="UndoManager.html#redo">UndoManager.redo</a>.
Those methods call the <a href="Transaction.html#undo">undo</a> or <a href="Transaction.html#redo">redo</a> methods here.</p>
<p>The <a href="UndoManager.html">UndoManager</a> holds a list of Transactions in its <a href="UndoManager.html#history">UndoManager.history</a>.</p>
</div></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"><a href="Transaction.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-get-signature tsd-parent-kind-class"><a href="Transaction.html#changes" class="tsd-kind-icon">changes</a></li><li class="tsd-kind-accessor tsd-parent-kind-class"><a href="Transaction.html#isComplete" class="tsd-kind-icon">is<wbr/>Complete</a></li><li class="tsd-kind-accessor tsd-parent-kind-class"><a href="Transaction.html#name" class="tsd-kind-icon">name</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"><a href="Transaction.html#canRedo" class="tsd-kind-icon">can<wbr/>Redo</a></li><li class="tsd-kind-method tsd-parent-kind-class"><a href="Transaction.html#canUndo" class="tsd-kind-icon">can<wbr/>Undo</a></li><li class="tsd-kind-method tsd-parent-kind-class"><a href="Transaction.html#clear" class="tsd-kind-icon">clear</a></li><li class="tsd-kind-method tsd-parent-kind-class"><a href="Transaction.html#optimize" class="tsd-kind-icon">optimize</a></li><li class="tsd-kind-method tsd-parent-kind-class"><a href="Transaction.html#redo" class="tsd-kind-icon">redo</a></li><li class="tsd-kind-method tsd-parent-kind-class"><a href="Transaction.html#undo" class="tsd-kind-icon">undo</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"><a id="constructor" class="tsd-anchor"></a><h3 class="tsd-anchor-link"> constructor<a href="#constructor" aria-label="Permalink" class="tsd-anchor-icon"><svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-link" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round"><path stroke="none" d="M0 0h24v24H0z" fill="none"></path><path d="M10 14a3.5 3.5 0 0 0 5 0l4 -4a3.5 3.5 0 0 0 -5 -5l-.5 .5"></path><path d="M14 10a3.5 3.5 0 0 0 -5 0l-4 4a3.5 3.5 0 0 0 5 5l.5 -.5"></path></svg></a></h3><ul class="tsd-signatures tsd-kind-constructor tsd-parent-kind-class"><li class="tsd-signature tsd-kind-icon">new <wbr/>Transaction<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="Transaction.html" class="tsd-signature-type" data-tsd-kind="Class">Transaction</a></li></ul><ul class="tsd-descriptions"><li class="tsd-description"><div class="tsd-comment tsd-typography">
<p>Construct an object holding an empty list of <a href="ChangedEvent.html">ChangedEvent</a>s
and no <a href="Transaction.html#name">name</a>.</p>
</div><h4 class="tsd-returns-title">Returns <a href="Transaction.html" class="tsd-signature-type" data-tsd-kind="Class">Transaction</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-get-signature tsd-parent-kind-class"><a id="changes" class="tsd-anchor"></a><h3 class="tsd-anchor-link"><span class="tsd-flag ts-flagReadOnly">Read-only</span> changes<span class="tsd-signature-symbol">: </span><a href="List.html" class="tsd-signature-type" data-tsd-kind="Class">List</a><span class="tsd-signature-symbol"><</span><a href="ChangedEvent.html" class="tsd-signature-type" data-tsd-kind="Class">ChangedEvent</a><span class="tsd-signature-symbol">></span><a href="#changes" aria-label="Permalink" class="tsd-anchor-icon"><svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-link" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round"><path stroke="none" d="M0 0h24v24H0z" fill="none"></path><path d="M10 14a3.5 3.5 0 0 0 5 0l4 -4a3.5 3.5 0 0 0 -5 -5l-.5 .5"></path><path d="M14 10a3.5 3.5 0 0 0 -5 0l-4 4a3.5 3.5 0 0 0 5 5l.5 -.5"></path></svg></a></h3><ul class="tsd-descriptions"><li class="tsd-description"><div class="tsd-comment tsd-typography">
<p>This read-only property returns the list of <a href="ChangedEvent.html">ChangedEvent</a>s.
The changes are stored in order of occurrence.</p>
<div><p>You should not modify this list.</p>
</div></div></li></ul></section><section class="tsd-panel tsd-member tsd-kind-accessor tsd-parent-kind-class"><a id="isComplete" class="tsd-anchor"></a><h3 class="tsd-anchor-link"> is<wbr/>Complete<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span><a href="#isComplete" aria-label="Permalink" class="tsd-anchor-icon"><svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-link" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round"><path stroke="none" d="M0 0h24v24H0z" fill="none"></path><path d="M10 14a3.5 3.5 0 0 0 5 0l4 -4a3.5 3.5 0 0 0 -5 -5l-.5 .5"></path><path d="M14 10a3.5 3.5 0 0 0 -5 0l-4 4a3.5 3.5 0 0 0 5 5l.5 -.5"></path></svg></a></h3><ul class="tsd-descriptions"><li class="tsd-description"><div class="tsd-comment tsd-typography">
<p>Gets or sets whether we can add more <a href="ChangedEvent.html">ChangedEvent</a>s to this list of changes.
This is initially false.
It is set to true by <a href="UndoManager.html#commitTransaction">UndoManager.commitTransaction</a> and <a href="UndoManager.html#rollbackTransaction">UndoManager.rollbackTransaction</a>.</p>
</div></li></ul></section><section class="tsd-panel tsd-member tsd-kind-accessor tsd-parent-kind-class"><a id="name" class="tsd-anchor"></a><h3 class="tsd-anchor-link"> name<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">string</span><a href="#name" aria-label="Permalink" class="tsd-anchor-icon"><svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-link" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round"><path stroke="none" d="M0 0h24v24H0z" fill="none"></path><path d="M10 14a3.5 3.5 0 0 0 5 0l4 -4a3.5 3.5 0 0 0 -5 -5l-.5 .5"></path><path d="M14 10a3.5 3.5 0 0 0 -5 0l-4 4a3.5 3.5 0 0 0 5 5l.5 -.5"></path></svg></a></h3><ul class="tsd-descriptions"><li class="tsd-description"><div class="tsd-comment tsd-typography">
<p>Gets or sets the transaction name for this collection of changes.
This is set by a top-level call to <a href="UndoManager.html#commitTransaction">UndoManager.commitTransaction</a>.</p>
</div></li></ul></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"><a id="canRedo" class="tsd-anchor"></a><h3 class="tsd-anchor-link"> can<wbr/>Redo<a href="#canRedo" aria-label="Permalink" class="tsd-anchor-icon"><svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-link" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round"><path stroke="none" d="M0 0h24v24H0z" fill="none"></path><path d="M10 14a3.5 3.5 0 0 0 5 0l4 -4a3.5 3.5 0 0 0 -5 -5l-.5 .5"></path><path d="M14 10a3.5 3.5 0 0 0 -5 0l-4 4a3.5 3.5 0 0 0 5 5l.5 -.5"></path></svg></a></h3><ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"><li class="tsd-signature tsd-kind-icon">can<wbr/>Redo<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 predicate returns true if you can call <a href="Transaction.html#redo">redo</a>,
namely when <a href="Transaction.html#isComplete">isComplete</a> is true.</p>
</div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4><div><p>true if ready for <a href="Transaction.html#redo">redo</a> to be called.</p>
</div></li></ul></section><section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class"><a id="canUndo" class="tsd-anchor"></a><h3 class="tsd-anchor-link"> can<wbr/>Undo<a href="#canUndo" aria-label="Permalink" class="tsd-anchor-icon"><svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-link" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round"><path stroke="none" d="M0 0h24v24H0z" fill="none"></path><path d="M10 14a3.5 3.5 0 0 0 5 0l4 -4a3.5 3.5 0 0 0 -5 -5l-.5 .5"></path><path d="M14 10a3.5 3.5 0 0 0 -5 0l-4 4a3.5 3.5 0 0 0 5 5l.5 -.5"></path></svg></a></h3><ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"><li class="tsd-signature tsd-kind-icon">can<wbr/>Undo<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 predicate returns true if you can call <a href="Transaction.html#undo">undo</a>,
namely when <a href="Transaction.html#isComplete">isComplete</a> is true.</p>
</div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4><div><p>true if ready for <a href="Transaction.html#undo">undo</a> to be called.</p>
</div></li></ul></section><section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class"><a id="clear" class="tsd-anchor"></a><h3 class="tsd-anchor-link"> clear<a href="#clear" aria-label="Permalink" class="tsd-anchor-icon"><svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-link" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round"><path stroke="none" d="M0 0h24v24H0z" fill="none"></path><path d="M10 14a3.5 3.5 0 0 0 5 0l4 -4a3.5 3.5 0 0 0 -5 -5l-.5 .5"></path><path d="M14 10a3.5 3.5 0 0 0 -5 0l-4 4a3.5 3.5 0 0 0 5 5l.5 -.5"></path></svg></a></h3><ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"><li class="tsd-signature tsd-kind-icon">clear<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 all of the saved changes.</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 id="optimize" class="tsd-anchor"></a><h3 class="tsd-anchor-link"> optimize<a href="#optimize" aria-label="Permalink" class="tsd-anchor-icon"><svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-link" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round"><path stroke="none" d="M0 0h24v24H0z" fill="none"></path><path d="M10 14a3.5 3.5 0 0 0 5 0l4 -4a3.5 3.5 0 0 0 -5 -5l-.5 .5"></path><path d="M14 10a3.5 3.5 0 0 0 -5 0l-4 4a3.5 3.5 0 0 0 5 5l.5 -.5"></path></svg></a></h3><ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"><li class="tsd-signature tsd-kind-icon">optimize<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>Remove all but the first and last Property ChangedEvents for each property for each object.</p>
<div><p>This is now called by <a href="DraggingTool.html#stopTransaction">DraggingTool.stopTransaction</a> in order to reduce the memory saved by each dragging transaction.</p>
</div><dl class="tsd-comment-tags"><dt class="">since</dt><dd><p>2.2</p>
</dd></dl></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 id="redo" class="tsd-anchor"></a><h3 class="tsd-anchor-link"> redo<a href="#redo" aria-label="Permalink" class="tsd-anchor-icon"><svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-link" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round"><path stroke="none" d="M0 0h24v24H0z" fill="none"></path><path d="M10 14a3.5 3.5 0 0 0 5 0l4 -4a3.5 3.5 0 0 0 -5 -5l-.5 .5"></path><path d="M14 10a3.5 3.5 0 0 0 -5 0l-4 4a3.5 3.5 0 0 0 5 5l.5 -.5"></path></svg></a></h3><ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"><li class="tsd-signature tsd-kind-icon">redo<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>Re-perform these changes after an <a href="Transaction.html#undo">undo</a>.
This is normally called only by the <a href="UndoManager.html">UndoManager</a>.
<a href="Transaction.html#canRedo">canRedo</a> must be true for this method to have any effect.</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 id="undo" class="tsd-anchor"></a><h3 class="tsd-anchor-link"> undo<a href="#undo" aria-label="Permalink" class="tsd-anchor-icon"><svg xmlns="http://www.w3.org/2000/svg" class="icon icon-tabler icon-tabler-link" viewBox="0 0 24 24" stroke-width="2" stroke="currentColor" fill="none" stroke-linecap="round" stroke-linejoin="round"><path stroke="none" d="M0 0h24v24H0z" fill="none"></path><path d="M10 14a3.5 3.5 0 0 0 5 0l4 -4a3.5 3.5 0 0 0 -5 -5l-.5 .5"></path><path d="M14 10a3.5 3.5 0 0 0 -5 0l-4 4a3.5 3.5 0 0 0 5 5l.5 -.5"></path></svg></a></h3><ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class"><li class="tsd-signature tsd-kind-icon">undo<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>Undo all of the changes, in reverse order.
This is normally called only by the <a href="UndoManager.html">UndoManager</a>.
<a href="Transaction.html#canUndo">canUndo</a> must be true for this method to have any effect.</p>
</div><h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4></li></ul></section></section></div><div class="col-4 col-menu menu-sticky-wrap menu-highlight"><nav class="tsd-navigation primary"><ul><li class=""><a href="../index.html">GoJS Class Index</a></li></ul></nav><nav class="tsd-navigation secondary menu-sticky"><ul><li class="current tsd-kind-class"><a href="Transaction.html" class="tsd-kind-icon">Transaction</a><ul><li class="tsd-kind-constructor tsd-parent-kind-class"><a href="Transaction.html#constructor" class="tsd-kind-icon">constructor</a></li><li class="tsd-kind-get-signature tsd-parent-kind-class"><a href="Transaction.html#changes" class="tsd-kind-icon">changes</a></li><li class="tsd-kind-accessor tsd-parent-kind-class"><a href="Transaction.html#isComplete" class="tsd-kind-icon">is<wbr/>Complete</a></li><li class="tsd-kind-accessor tsd-parent-kind-class"><a href="Transaction.html#name" class="tsd-kind-icon">name</a></li><li class="tsd-kind-method tsd-parent-kind-class"><a href="Transaction.html#canRedo" class="tsd-kind-icon">can<wbr/>Redo</a></li><li class="tsd-kind-method tsd-parent-kind-class"><a href="Transaction.html#canUndo" class="tsd-kind-icon">can<wbr/>Undo</a></li><li class="tsd-kind-method tsd-parent-kind-class"><a href="Transaction.html#clear" class="tsd-kind-icon">clear</a></li><li class="tsd-kind-method tsd-parent-kind-class"><a href="Transaction.html#optimize" class="tsd-kind-icon">optimize</a></li><li class="tsd-kind-method tsd-parent-kind-class"><a href="Transaction.html#redo" class="tsd-kind-icon">redo</a></li><li class="tsd-kind-method tsd-parent-kind-class"><a href="Transaction.html#undo" class="tsd-kind-icon">undo</a></li></ul></li></ul></nav></div></div></div><div class="tsd w-full max-w-screen-xl mx-auto px-2"><div class="bottom-copyright">Copyright © 1998-2022 by Northwoods Software Corporation.</div></div><footer class=""><div class="tsd w-full max-w-screen-xl mx-auto px-2"><h2>Settings</h2><p class="mb-4">Theme <select id="theme"><option value="os">OS</option><option value="light">Light</option><option value="dark">Dark</option></select></p></div></footer><div class="overlay"></div><script src="../assets/main.js"></script><script async src="https://www.googletagmanager.com/gtag/js?id=UA-1506307-5"></script>
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