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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>JSDoc: Class: History</title>
<script src="scripts/prettify/prettify.js"> </script>
<script src="scripts/prettify/lang-css.js"> </script>
<!--[if lt IE 9]>
<script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->
<link type="text/css" rel="stylesheet" href="styles/prettify-tomorrow.css">
<link type="text/css" rel="stylesheet" href="styles/jsdoc-default.css">
</head>
<body>
<div id="main">
<h1 class="page-title">Class: History</h1>
<section>
<header>
<h2><span class="attribs"><span class="type-signature"></span></span>
<span class="ancestors"><a href="global.html#Wick">Wick</a>.</span>History<span class="signature">()</span><span class="type-signature"></span></h2>
<div class="class-description">History utility class for undo/redo functionality.</div>
</header>
<article>
<div class="container-overview">
<h2>Constructor</h2>
<h4 class="name" id="History"><span class="type-signature"></span>new History<span class="signature">()</span><span class="type-signature"></span></h4>
<div class="description">
Creates a new history object
</div>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="History.js.html">History.js</a>, <a href="History.js.html#line46">line 46</a>
</li></ul></dd>
</dl>
</div>
<h3 class="subsection-title">Members</h3>
<h4 class="name" id=".StateType"><span class="type-signature">(static) </span>StateType<span class="type-signature"></span></h4>
<div class="description">
An Enum of all types of state saves.
</div>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="History.js.html">History.js</a>, <a href="History.js.html#line35">line 35</a>
</li></ul></dd>
</dl>
<h4 class="name" id=".VERBOSE"><span class="type-signature">(static) </span>VERBOSE<span class="type-signature"> :boolean</span></h4>
<h5>Type:</h5>
<ul>
<li>
<span class="param-type">boolean</span>
</li>
</ul>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="History.js.html">History.js</a>, <a href="History.js.html#line28">line 28</a>
</li></ul></dd>
</dl>
<h4 class="name" id="numRedoStates"><span class="type-signature"></span>numRedoStates<span class="type-signature"> :number</span></h4>
<div class="description">
The number of states currently stored for redoing.
</div>
<h5>Type:</h5>
<ul>
<li>
<span class="param-type">number</span>
</li>
</ul>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="History.js.html">History.js</a>, <a href="History.js.html#line125">line 125</a>
</li></ul></dd>
</dl>
<h4 class="name" id="numUndoStates"><span class="type-signature"></span>numUndoStates<span class="type-signature"> :number</span></h4>
<div class="description">
The number of states currently stored for undoing.
</div>
<h5>Type:</h5>
<ul>
<li>
<span class="param-type">number</span>
</li>
</ul>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="History.js.html">History.js</a>, <a href="History.js.html#line117">line 117</a>
</li></ul></dd>
</dl>
<h3 class="subsection-title">Methods</h3>
<h4 class="name" id="loadSnapshot"><span class="type-signature"></span>loadSnapshot<span class="signature">(name)</span><span class="type-signature"></span></h4>
<div class="description">
Save a state to the list of snapshots to be recovered at any time.
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>name</code></td>
<td class="type">
<span class="param-type">string</span>
</td>
<td class="description last">the name of the snapshot to recover</td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="History.js.html">History.js</a>, <a href="History.js.html#line109">line 109</a>
</li></ul></dd>
</dl>
<h4 class="name" id="popState"><span class="type-signature"></span>popState<span class="signature">()</span><span class="type-signature"> → {boolean}</span></h4>
<div class="description">
Pop the last state in the undo stack off and apply the new last state to the project.
</div>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="History.js.html">History.js</a>, <a href="History.js.html#line65">line 65</a>
</li></ul></dd>
</dl>
<h5>Returns:</h5>
<div class="param-desc">
True if the undo stack is non-empty, false otherwise
</div>
<dl>
<dt>
Type
</dt>
<dd>
<span class="param-type">boolean</span>
</dd>
</dl>
<h4 class="name" id="pushState"><span class="type-signature"></span>pushState<span class="signature">(filter)</span><span class="type-signature"></span></h4>
<div class="description">
Push the current state of the ObjectCache to the undo stack.
</div>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>filter</code></td>
<td class="type">
<span class="param-type">number</span>
</td>
<td class="description last">the filter to choose which objects to serialize. See Wick.History.StateType</td>
</tr>
</tbody>
</table>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="History.js.html">History.js</a>, <a href="History.js.html#line56">line 56</a>
</li></ul></dd>
</dl>
<h4 class="name" id="recoverState"><span class="type-signature"></span>recoverState<span class="signature">()</span><span class="type-signature"> → {boolean}</span></h4>
<div class="description">
Recover a state that was undone.
</div>
<dl class="details">
<dt class="tag-source">Source:</dt>
<dd class="tag-source"><ul class="dummy"><li>
<a href="History.js.html">History.js</a>, <a href="History.js.html#line83">line 83</a>
</li></ul></dd>
</dl>
<h5>Returns:</h5>
<div class="param-desc">
True if the redo stack is non-empty, false otherwise
</div>
<dl>
<dt>
Type
</dt>
<dd>
<span class="param-type">boolean</span>
</dd>
</dl>
<h4 class="name" id="saveSnapshot"><span class="type-signature"></span>saveSnapshot<span class="signature">(name, filter)</span><span class="type-signature"></span></h4>
<h5>Parameters:</h5>
<table class="params">
<thead>
<tr>
<th>Name</th>
<th>Type</th>
<th class="last">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td class="name"><code>name</code></td>
<td class="type">
<span class="param-type">string</span>
</td>
<td class="description last">the name of the snapshot</td>
</tr>
<tr>
<td class="name"><code>filter</code></td>
<td class="type">
<span class="param-type">number</span>