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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>History.js - Documentation</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.css">
<link type="text/css" rel="stylesheet" href="styles/jsdoc.css">
<script src="scripts/nav.js" defer></script>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
</head>
<body>
<input type="checkbox" id="nav-trigger" class="nav-trigger" />
<label for="nav-trigger" class="navicon-button x">
<div class="navicon"></div>
</label>
<label for="nav-trigger" class="overlay"></label>
<nav >
<h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="BuiltinAssets.html">BuiltinAssets</a></li><li><a href="GlobalAPI.html">GlobalAPI</a><ul class='methods'><li data-type='method'><a href="GlobalAPI.html#gotoAndPlay">gotoAndPlay</a></li><li data-type='method'><a href="GlobalAPI.html#gotoAndStop">gotoAndStop</a></li><li data-type='method'><a href="GlobalAPI.html#gotoNextFrame">gotoNextFrame</a></li><li data-type='method'><a href="GlobalAPI.html#gotoPrevFrame">gotoPrevFrame</a></li><li data-type='method'><a href="GlobalAPI.html#hideCursor">hideCursor</a></li><li data-type='method'><a href="GlobalAPI.html#isKeyDown">isKeyDown</a></li><li data-type='method'><a href="GlobalAPI.html#isKeyJustPressed">isKeyJustPressed</a></li><li data-type='method'><a href="GlobalAPI.html#isMouseDown">isMouseDown</a></li><li data-type='method'><a href="GlobalAPI.html#keyIsDown">keyIsDown</a></li><li data-type='method'><a href="GlobalAPI.html#keyIsJustPressed">keyIsJustPressed</a></li><li data-type='method'><a href="GlobalAPI.html#onEvent">onEvent</a></li><li data-type='method'><a href="GlobalAPI.html#play">play</a></li><li data-type='method'><a href="GlobalAPI.html#playSound">playSound</a></li><li data-type='method'><a href="GlobalAPI.html#showCursor">showCursor</a></li><li data-type='method'><a href="GlobalAPI.html#stop">stop</a></li><li data-type='method'><a href="GlobalAPI.html#stopAllSounds">stopAllSounds</a></li><li data-type='method'><a href="GlobalAPI.html#stopSound">stopSound</a></li></ul></li><li><a href="paper.SelectionGUI.html">SelectionGUI</a><ul class='methods'><li data-type='method'><a href="paper.SelectionGUI.html#destroy">destroy</a></li><li data-type='method'><a href="paper.SelectionGUI.html#moveHandleAndRotate">moveHandleAndRotate</a></li><li data-type='method'><a href="paper.SelectionGUI.html#moveHandleAndScale">moveHandleAndScale</a></li></ul></li><li><a href="paper-paper.Selection.html">Selection</a></li><li><a href="SelectionWidget.html">SelectionWidget</a><ul class='methods'><li data-type='method'><a href="SelectionWidget.html#build">build</a></li><li data-type='method'><a href="SelectionWidget.html#finishTransformation">finishTransformation</a></li><li data-type='method'><a href="SelectionWidget.html#flipHorizontally">flipHorizontally</a></li><li data-type='method'><a href="SelectionWidget.html#flipVertically">flipVertically</a></li><li data-type='method'><a href="SelectionWidget.html#rotateSelection">rotateSelection</a></li><li data-type='method'><a href="SelectionWidget.html#scaleSelection">scaleSelection</a></li><li data-type='method'><a href="SelectionWidget.html#startTransformation">startTransformation</a></li><li data-type='method'><a href="SelectionWidget.html#transformSelection">transformSelection</a></li><li data-type='method'><a href="SelectionWidget.html#translateSelection">translateSelection</a></li><li data-type='method'><a href="SelectionWidget.html#updateTransformation">updateTransformation</a></li></ul></li><li><a href="Wick.AutoSave.html">AutoSave</a><ul class='methods'><li data-type='method'><a href="Wick.AutoSave.html#.addAutosaveToList">addAutosaveToList</a></li><li data-type='method'><a href="Wick.AutoSave.html#.delete">delete</a></li><li data-type='method'><a href="Wick.AutoSave.html#.deleteAutosaveData">deleteAutosaveData</a></li><li data-type='method'><a href="Wick.AutoSave.html#.generateAutosaveData">generateAutosaveData</a></li><li data-type='method'><a href="Wick.AutoSave.html#.generateProjectFromAutosaveData">generateProjectFromAutosaveData</a></li><li data-type='method'><a href="Wick.AutoSave.html#.getAutosavesList">getAutosavesList</a></li><li data-type='method'><a href="Wick.AutoSave.html#.load">load</a></li><li data-type='method'><a href="Wick.AutoSave.html#.readAutosaveData">readAutosaveData</a></li><li data-type='method'><a href="Wick.AutoSave.html#.removeAutosaveFromList">removeAutosaveFromList</a></li><li data-type='method'><a href="Wick.AutoSave.html#.save">save</a></li><li data-type='method'><a href="Wick.AutoSave.html#.updateAutosavesList">updateAutosavesList</a></li><li data-type='method'><a href="Wick.AutoSave.html#.writeAutosaveData">writeAutosaveData</a></li></ul></li><li><a href="Wick.Base.html">Base</a><ul class='methods'><li data-type='method'><a href="Wick.Base.html#.fromData">fromData</a></li><li data-type='method'><a href="Wick.Base.html#.import">import</a></li><li data-type='method'><a href="Wick.Base.html#addChild">addChild</a></li><li data-type='method'><a href="Wick.Base.html#copy">copy</a></li><li data-type='method'><a href="Wick.Base.html#deserialize">deserialize</a></li><li data-type='method'><a href="Wick.Base.html#export">export</a></li><li data-type='method'><a href="Wick.Base.html#getChild">getChild</a></li><li data-type='method'><a href="Wick.Base.html#getChildren">getChildren</a></li><li data-type='method'><a href="Wick.Base.html#getChildrenRecursive">getChildrenRecursive</a></li><li data-type='method'><a href="Wick.Base.html#getLinkedAssets">getLinkedAssets</a></li><li data-type='method'><a href="Wick.Base.html#insertChild">insertChild</a></li><li data-type='method'><a href="Wick.Base.html#removeChild">removeChild</a></li><li data-type='method'><a href="Wick.Base.html#serialize">serialize</a></li></ul></li><li><a href="Wick.Button.html">Button</a></li><li><a href="Wick.Clip.html">Clip</a><ul class='methods'><li data-type='method'><a href="Wick.Clip.html#addObjects">addObjects</a></li><li data-type='method'><a href="Wick.Clip.html#applySingleFramePosition">applySingleFramePosition</a></li><li data-type='method'><a href="Wick.Clip.html#applySyncPosition">applySyncPosition</a></li><li data-type='method'><a href="Wick.Clip.html#breakApart">breakApart</a></li><li data-type='method'><a href="Wick.Clip.html#circleHits">circleHits</a></li><li data-type='method'><a href="Wick.Clip.html#clone">clone</a></li><li data-type='method'><a href="Wick.Clip.html#convexHits">convexHits</a></li><li data-type='method'><a href="Wick.Clip.html#ensureActiveFrameIsContentful">ensureActiveFrameIsContentful</a></li><li data-type='method'><a href="Wick.Clip.html#gotoAndPlay">gotoAndPlay</a></li><li data-type='method'><a href="Wick.Clip.html#gotoAndStop">gotoAndStop</a></li><li data-type='method'><a href="Wick.Clip.html#gotoNextFrame">gotoNextFrame</a></li><li data-type='method'><a href="Wick.Clip.html#gotoPrevFrame">gotoPrevFrame</a></li><li data-type='method'><a href="Wick.Clip.html#hits">hits</a></li><li data-type='method'><a href="Wick.Clip.html#hitTest">hitTest</a></li><li data-type='method'><a href="Wick.Clip.html#play">play</a></li><li data-type='method'><a href="Wick.Clip.html#radiusAtPointInDirection">radiusAtPointInDirection</a></li><li data-type='method'><a href="Wick.Clip.html#rectangleHits">rectangleHits</a></li><li data-type='method'><a href="Wick.Clip.html#remove">remove</a></li><li data-type='method'><a href="Wick.Clip.html#removeClone">removeClone</a></li><li data-type='method'><a href="Wick.Clip.html#resetTimelinePosition">resetTimelinePosition</a></li><li data-type='method'><a href="Wick.Clip.html#setText">setText</a></li><li data-type='method'><a href="Wick.Clip.html#stop">stop</a></li><li data-type='method'><a href="Wick.Clip.html#updateTimelineForAnimationType">updateTimelineForAnimationType</a></li></ul></li><li><a href="Wick.Clipboard.html">Clipboard</a><ul class='methods'><li data-type='method'><a href="Wick.Clipboard.html#copyObjectsToClipboard">copyObjectsToClipboard</a></li><li data-type='method'><a href="Wick.Clipboard.html#pasteObjectsFromClipboard">pasteObjectsFromClipboard</a></li></ul></li><li><a href="Wick.FileCache.html">FileCache</a><ul class='methods'><li data-type='method'><a href="Wick.FileCache.html#.addFile">addFile</a></li><li data-type='method'><a href="Wick.FileCache.html#.clear">clear</a></li><li data-type='method'><a href="Wick.FileCache.html#.getAllFiles">getAllFiles</a></li><li data-type='method'><a href="Wick.FileCache.html#.getFile">getFile</a></li><li data-type='method'><a href="Wick.FileCache.html#.loadFilesFromLocalforage">loadFilesFromLocalforage</a></li><li data-type='method'><a href="Wick.FileCache.html#.removeFile">removeFile</a></li></ul></li><li><a href="Wick.Frame.html">Frame</a><ul class='methods'><li data-type='method'><a href="Wick.Frame.html#addClip">addClip</a></li><li data-type='method'><a href="Wick.Frame.html#addPath">addPath</a></li><li data-type='method'><a href="Wick.Frame.html#addTween">addTween</a></li><li data-type='method'><a href="Wick.Frame.html#applyClipSingleFramePositions">applyClipSingleFramePositions</a></li><li data-type='method'><a href="Wick.Frame.html#applyTweenTransforms">applyTweenTransforms</a></li><li data-type='method'><a href="Wick.Frame.html#containedWithin">containedWithin</a></li><li data-type='method'><a href="Wick.Frame.html#createTween">createTween</a></li><li data-type='method'><a href="Wick.Frame.html#cut">cut</a></li><li data-type='method'><a href="Wick.Frame.html#distanceFrom">distanceFrom</a></li><li data-type='method'><a href="Wick.Frame.html#extendAndPushOtherFrames">extendAndPushOtherFrames</a></li><li data-type='method'><a href="Wick.Frame.html#getActiveTween">getActiveTween</a></li><li data-type='method'><a href="Wick.Frame.html#getLinkedAssets">getLinkedAssets</a></li><li data-type='method'><a href="Wick.Frame.html#getRelativePlayheadPosition">getRelativePlayheadPosition</a></li><li data-type='method'><a href="Wick.Frame.html#getTweenAtCurrentPlayheadPosition">getTweenAtCurrentPlayheadPosition</a></li><li data-type='method'><a href="Wick.Frame.html#getTweenAtPosition">getTweenAtPosition</a></li><li data-type='method'><a href="Wick.Frame.html#inPosition">inPosition</a></li><li data-type='method'><a href="Wick.Frame.html#inRange">inRange</a></li><li data-type='method'><a href="Wick.Frame.html#isSoundPlaying">isSoundPlaying</a></li><li data-type='method'><a href="Wick.Frame.html#playSound">playSound</a></li><li data-type='method'><a href="Wick.Frame.html#remove">remove</a></li><li data-type='method'><a href="Wick.Frame.html#removeAllTweens">removeAllTweens</a></li><li data-type='method'><a href="Wick.Frame.html#removeClip">removeClip</a></li><li data-type='method'><a href="Wick.Frame.html#removePath">removePath</a></li><li data-type='method'><a href="Wick.Frame.html#removeSound">removeSound</a></li><li data-type='method'><a href="Wick.Frame.html#removeTween">removeTween</a></li><li data-type='method'><a href="Wick.Frame.html#seekTweenBehind">seekTweenBehind</a></li><li data-type='method'><a href="Wick.Frame.html#seekTweenInFront">seekTweenInFront</a></li><li data-type='method'><a href="Wick.Frame.html#shrinkAndPullOtherFrames">shrinkAndPullOtherFrames</a></li><li data-type='method'><a href="Wick.Frame.html#stopSound">stopSound</a></li><li data-type='method'><a href="Wick.Frame.html#updateClipTimelinesForAnimationType">updateClipTimelinesForAnimationType</a></li></ul></li><li><a href="Wick.GUIElement.Project.html">Project</a><ul class='methods'><li data-type='method'><a href="Wick.GUIElement.Project.html#_onMouseWheel">_onMouseWheel</a></li><li data-type='method'><a href="Wick.GUIElement.Project.html#checkForPlayheadAutoscroll">checkForPlayheadAutoscroll</a></li><li data-type='method'><a href="Wick.GUIElement.Project.html#closePopupMenu">closePopupMenu</a></li><li data-type='method'><a href="Wick.GUIElement.Project.html#createCanvasEvent">createCanvasEvent</a></li><li data-type='method'><a href="Wick.GUIElement.Project.html#createDocumentEvent">createDocumentEvent</a></li><li data-type='method'><a href="Wick.GUIElement.Project.html#dragAssetAtPosition">dragAssetAtPosition</a></li><li data-type='method'><a href="Wick.GUIElement.Project.html#draw">draw</a></li><li data-type='method'><a href="Wick.GUIElement.Project.html#markElementAsDrawn">markElementAsDrawn</a></li><li data-type='method'><a href="Wick.GUIElement.Project.html#onProjectModified">onProjectModified</a></li><li data-type='method'><a href="Wick.GUIElement.Project.html#onProjectSoftModified">onProjectSoftModified</a></li><li data-type='method'><a href="Wick.GUIElement.Project.html#openPopupMenu">openPopupMenu</a></li><li data-type='method'><a href="Wick.GUIElement.Project.html#removeAllEventListeners">removeAllEventListeners</a></li><li data-type='method'><a href="Wick.GUIElement.Project.html#resize">resize</a></li></ul></li><li><a href="Wick.GUIElement.Timeline.html">Timeline</a><ul class='methods'><li data-type='method'><a href="Wick.GUIElement.Timeline.html#draw">draw</a></li></ul></li><li><a href="Wick.GUIElement-Wick.GUIElement.Breadcrumbs.html">Breadcrumbs</a></li><li><a href="Wick.GUIElement-Wick.GUIElement.Button.html">Button</a></li><li><a href="Wick.History.html">History</a><ul class='methods'><li data-type='method'><a href="Wick.History.html#getObjectUUIDs">getObjectUUIDs</a></li><li data-type='method'><a href="Wick.History.html#loadSnapshot">loadSnapshot</a></li><li data-type='method'><a href="Wick.History.html#popState">popState</a></li><li data-type='method'><a href="Wick.History.html#pushState">pushState</a></li><li data-type='method'><a href="Wick.History.html#recoverState">recoverState</a></li><li data-type='method'><a href="Wick.History.html#reset">reset</a></li><li data-type='method'><a href="Wick.History.html#saveSnapshot">saveSnapshot</a></li></ul></li><li><a href="Wick.HTMLExport.html">HTMLExport</a><ul class='methods'><li data-type='method'><a href="Wick.HTMLExport.html#.bundleProject">bundleProject</a></li></ul></li><li><a href="Wick.HTMLPreview.html">HTMLPreview</a><ul class='methods'><li data-type='method'><a href="Wick.HTMLPreview.html#.previewProject">previewProject</a></li></ul></li><li><a href="Wick.ImageSequence.html">ImageSequence</a><ul class='methods'><li data-type='method'><a href="Wick.ImageSequence.html#.toPNGSequence">toPNGSequence</a></li></ul></li><li><a href="Wick.Layer.html">Layer</a><ul class='methods'><li data-type='method'><a href="Wick.Layer.html#activate">activate</a></li><li data-type='method'><a href="Wick.Layer.html#addFrame">addFrame</a></li><li data-type='method'><a href="Wick.Layer.html#addTween">addTween</a></li><li data-type='method'><a href="Wick.Layer.html#findGaps">findGaps</a></li><li data-type='method'><a href="Wick.Layer.html#getFrameAtPlayheadPosition">getFrameAtPlayheadPosition</a></li><li data-type='method'><a href="Wick.Layer.html#getFramesContainedWithin">getFramesContainedWithin</a></li><li data-type='method'><a href="Wick.Layer.html#getFramesInRange">getFramesInRange</a></li><li data-type='method'><a href="Wick.Layer.html#insertBlankFrame">insertBlankFrame</a></li><li data-type='method'><a href="Wick.Layer.html#move">move</a></li><li data-type='method'><a href="Wick.Layer.html#remove">remove</a></li><li data-type='method'><a href="Wick.Layer.html#removeFrame">removeFrame</a></li><li data-type='method'><a href="Wick.Layer.html#resolveGaps">resolveGaps</a></li><li data-type='method'><a href="Wick.Layer.html#resolveOverlap">resolveOverlap</a></li></ul></li><li><a href="Wick.Path.html">Path</a><ul class='methods'><li data-type='method'><a href="Wick.Path.html#.booleanOp">booleanOp</a></li><li data-type='method'><a href="Wick.Path.html#.createImagePath">createImagePath</a></li><li data-type='method'><a href="Wick.Path.html#.createImagePathSync">createImagePathSync</a></li><li data-type='method'><a href="Wick.Path.html#.intersect">intersect</a></li><li data-type='method'><a href="Wick.Path.html#.subtract">subtract</a></li><li data-type='method'><a href="Wick.Path.html#.unite">unite</a></li><li data-type='method'><a href="Wick.Path.html#flatten">flatten</a></li><li data-type='method'><a href="Wick.Path.html#getLinkedAssets">getLinkedAssets</a></li><li data-type='method'><a href="Wick.Path.html#remove">remove</a></li><li data-type='method'><a href="Wick.Path.html#setText">setText</a></li><li data-type='method'><a href="Wick.Path.html#updateJSON">updateJSON</a></li></ul></li><li><a href="Wick.Project.html">Project</a><ul class='methods'><li data-type='method'><a href="Wick.Project.html#addAsset">addAsset</a></li><li data-type='method'><a href="Wick.Project.html#addObject">addObject</a></li><li data-type='method'><a href="Wick.Project.html#breakApartSelection">breakApartSelection</a></li><li data-type='method'><a href="Wick.Project.html#cleanupUnusedAssets">cleanupUnusedAssets</a></li><li data-type='method'><a href="Wick.Project.html#copySelectionToClipboard">copySelectionToClipboard</a></li><li data-type='method'><a href="Wick.Project.html#createClipFromLayers">createClipFromLayers</a></li><li data-type='method'><a href="Wick.Project.html#createClipFromSelection">createClipFromSelection</a></li><li data-type='method'><a href="Wick.Project.html#createClipInstanceFromAsset">createClipInstanceFromAsset</a></li><li data-type='method'><a href="Wick.Project.html#createImagePathFromAsset">createImagePathFromAsset</a></li><li data-type='method'><a href="Wick.Project.html#createSVGInstanceFromAsset">createSVGInstanceFromAsset</a></li><li data-type='method'><a href="Wick.Project.html#createTween">createTween</a></li><li data-type='method'><a href="Wick.Project.html#cutSelectedFrames">cutSelectedFrames</a></li><li data-type='method'><a href="Wick.Project.html#cutSelectionToClipboard">cutSelectionToClipboard</a></li><li data-type='method'><a href="Wick.Project.html#deleteSelectedObjects">deleteSelectedObjects</a></li><li data-type='method'><a href="Wick.Project.html#destroy">destroy</a></li><li data-type='method'><a href="Wick.Project.html#distributeSelectionToLayers">distributeSelectionToLayers</a></li><li data-type='method'><a href="Wick.Project.html#doBooleanOperationOnSelection">doBooleanOperationOnSelection</a></li><li data-type='method'><a href="Wick.Project.html#duplicateSelection">duplicateSelection</a></li><li data-type='method'><a href="Wick.Project.html#errorOccured">errorOccured</a></li><li data-type='method'><a href="Wick.Project.html#extendFrames">extendFrames</a></li><li data-type='method'><a href="Wick.Project.html#extendFramesAndPushOtherFrames">extendFramesAndPushOtherFrames</a></li><li data-type='method'><a href="Wick.Project.html#focusTimelineOfParentClip">focusTimelineOfParentClip</a></li><li data-type='method'><a href="Wick.Project.html#focusTimelineOfSelectedClip">focusTimelineOfSelectedClip</a></li><li data-type='method'><a href="Wick.Project.html#generateAudioSequence">generateAudioSequence</a></li><li data-type='method'><a href="Wick.Project.html#generateAudioTrack">generateAudioTrack</a></li><li data-type='method'><a href="Wick.Project.html#generateImageSequence">generateImageSequence</a></li><li data-type='method'><a href="Wick.Project.html#generateSoundInfo">generateSoundInfo</a></li><li data-type='method'><a href="Wick.Project.html#getAllFrames">getAllFrames</a></li><li data-type='method'><a href="Wick.Project.html#getAllOnionSkinnedFrames">getAllOnionSkinnedFrames</a></li><li data-type='method'><a href="Wick.Project.html#getAssetByName">getAssetByName</a></li><li data-type='method'><a href="Wick.Project.html#getAssetByUUID">getAssetByUUID</a></li><li data-type='method'><a href="Wick.Project.html#getAssets">getAssets</a></li><li data-type='method'><a href="Wick.Project.html#getAudioInfo">getAudioInfo</a></li><li data-type='method'><a href="Wick.Project.html#getFonts">getFonts</a></li><li data-type='method'><a href="Wick.Project.html#getObjectByUUID">getObjectByUUID</a></li><li data-type='method'><a href="Wick.Project.html#hasFont">hasFont</a></li><li data-type='method'><a href="Wick.Project.html#importFile">importFile</a></li><li data-type='method'><a href="Wick.Project.html#initialize">initialize</a></li><li data-type='method'><a href="Wick.Project.html#inject">inject</a></li><li data-type='method'><a href="Wick.Project.html#insertBlankFrame">insertBlankFrame</a></li><li data-type='method'><a href="Wick.Project.html#isKeyDown">isKeyDown</a></li><li data-type='method'><a href="Wick.Project.html#isKeyJustPressed">isKeyJustPressed</a></li><li data-type='method'><a href="Wick.Project.html#loadAssets">loadAssets</a></li><li data-type='method'><a href="Wick.Project.html#moveSelectedFramesLeft">moveSelectedFramesLeft</a></li><li data-type='method'><a href="Wick.Project.html#moveSelectedFramesRight">moveSelectedFramesRight</a></li><li data-type='method'><a href="Wick.Project.html#moveSelection">moveSelection</a></li><li data-type='method'><a href="Wick.Project.html#mute">mute</a></li><li data-type='method'><a href="Wick.Project.html#objectIsMouseTarget">objectIsMouseTarget</a></li><li data-type='method'><a href="Wick.Project.html#onError">onError</a></li><li data-type='method'><a href="Wick.Project.html#pasteClipboardContents">pasteClipboardContents</a></li><li data-type='method'><a href="Wick.Project.html#play">play</a></li><li data-type='method'><a href="Wick.Project.html#playSound">playSound</a></li><li data-type='method'><a href="Wick.Project.html#playSoundFromAsset">playSoundFromAsset</a></li><li data-type='method'><a href="Wick.Project.html#prepareProjectForEditor">prepareProjectForEditor</a></li><li data-type='method'><a href="Wick.Project.html#recenter">recenter</a></li><li data-type='method'><a href="Wick.Project.html#redo">redo</a></li><li data-type='method'><a href="Wick.Project.html#removeAsset">removeAsset</a></li><li data-type='method'><a href="Wick.Project.html#resetCache">resetCache</a></li><li data-type='method'><a href="Wick.Project.html#resetTools">resetTools</a></li><li data-type='method'><a href="Wick.Project.html#resetZoomAndPan">resetZoomAndPan</a></li><li data-type='method'><a href="Wick.Project.html#runScheduledScripts">runScheduledScripts</a></li><li data-type='method'><a href="Wick.Project.html#scheduleScript">scheduleScript</a></li><li data-type='method'><a href="Wick.Project.html#selectAll">selectAll</a></li><li data-type='method'><a href="Wick.Project.html#shrinkFrames">shrinkFrames</a></li><li data-type='method'><a href="Wick.Project.html#shrinkFramesAndPullOtherFrames">shrinkFramesAndPullOtherFrames</a></li><li data-type='method'><a href="Wick.Project.html#stop">stop</a></li><li data-type='method'><a href="Wick.Project.html#stopAllSounds">stopAllSounds</a></li><li data-type='method'><a href="Wick.Project.html#stopSound">stopSound</a></li><li data-type='method'><a href="Wick.Project.html#tick">tick</a></li><li data-type='method'><a href="Wick.Project.html#tryToAutoCreateTween">tryToAutoCreateTween</a></li><li data-type='method'><a href="Wick.Project.html#undo">undo</a></li><li data-type='method'><a href="Wick.Project.html#unmute">unmute</a></li><li data-type='method'><a href="Wick.Project.html#zoomIn">zoomIn</a></li><li data-type='method'><a href="Wick.Project.html#zoomOut">zoomOut</a></li></ul></li><li><a href="Wick.Selection.html">Selection</a><ul class='methods'><li data-type='method'><a href="Wick.Selection.html#bringToFront">bringToFront</a></li><li data-type='method'><a href="Wick.Selection.html#clear">clear</a></li><li data-type='method'><a href="Wick.Selection.html#deselect">deselect</a></li><li data-type='method'><a href="Wick.Selection.html#deselectMultipleObjects">deselectMultipleObjects</a></li><li data-type='method'><a href="Wick.Selection.html#flipHorizontally">flipHorizontally</a></li><li data-type='method'><a href="Wick.Selection.html#flipVertically">flipVertically</a></li><li data-type='method'><a href="Wick.Selection.html#getLeftmostFrames">getLeftmostFrames</a></li><li data-type='method'><a href="Wick.Selection.html#getRightmostFrames">getRightmostFrames</a></li><li data-type='method'><a href="Wick.Selection.html#getSelectedObject">getSelectedObject</a></li><li data-type='method'><a href="Wick.Selection.html#getSelectedObjects">getSelectedObjects</a></li><li data-type='method'><a href="Wick.Selection.html#getSelectedObjectUUIDs">getSelectedObjectUUIDs</a></li><li data-type='method'><a href="Wick.Selection.html#isObjectSelected">isObjectSelected</a></li><li data-type='method'><a href="Wick.Selection.html#isSelectable">isSelectable</a></li><li data-type='method'><a href="Wick.Selection.html#moveBackwards">moveBackwards</a></li><li data-type='method'><a href="Wick.Selection.html#moveForwards">moveForwards</a></li><li data-type='method'><a href="Wick.Selection.html#select">select</a></li><li data-type='method'><a href="Wick.Selection.html#selectMultipleObjects">selectMultipleObjects</a></li><li data-type='method'><a href="Wick.Selection.html#sendToBack">sendToBack</a></li></ul></li><li><a href="Wick.SVGFile.html">SVGFile</a><ul class='methods'><li data-type='method'><a href="Wick.SVGFile.html#.fromSVGFile">fromSVGFile</a></li><li data-type='method'><a href="Wick.SVGFile.html#.toSVGFile">toSVGFile</a></li></ul></li><li><a href="Wick.Tickable.html">Tickable</a><ul class='methods'><li data-type='method'><a href="Wick.Tickable.html#_runFunction">_runFunction</a></li><li data-type='method'><a href="Wick.Tickable.html#addEventFn">addEventFn</a></li><li data-type='method'><a href="Wick.Tickable.html#addScript">addScript</a></li><li data-type='method'><a href="Wick.Tickable.html#getAvailableScripts">getAvailableScripts</a></li><li data-type='method'><a href="Wick.Tickable.html#getEventFns">getEventFns</a></li><li data-type='method'><a href="Wick.Tickable.html#getScript">getScript</a></li><li data-type='method'><a href="Wick.Tickable.html#hasScript">hasScript</a></li><li data-type='method'><a href="Wick.Tickable.html#onEvent">onEvent</a></li><li data-type='method'><a href="Wick.Tickable.html#removeScript">removeScript</a></li><li data-type='method'><a href="Wick.Tickable.html#runScript">runScript</a></li><li data-type='method'><a href="Wick.Tickable.html#scheduleScript">scheduleScript</a></li><li data-type='method'><a href="Wick.Tickable.html#scriptIsContentful">scriptIsContentful</a></li><li data-type='method'><a href="Wick.Tickable.html#tick">tick</a></li><li data-type='method'><a href="Wick.Tickable.html#updateScript">updateScript</a></li></ul></li><li><a href="Wick.Timeline.html">Timeline</a><ul class='methods'><li data-type='method'><a href="Wick.Timeline.html#addFrame">addFrame</a></li><li data-type='method'><a href="Wick.Timeline.html#addLayer">addLayer</a></li><li data-type='method'><a href="Wick.Timeline.html#addTween">addTween</a></li><li data-type='method'><a href="Wick.Timeline.html#advance">advance</a></li><li data-type='method'><a href="Wick.Timeline.html#deferFrameGapResolve">deferFrameGapResolve</a></li><li data-type='method'><a href="Wick.Timeline.html#forceFrame">forceFrame</a></li><li data-type='method'><a href="Wick.Timeline.html#getAllFrames">getAllFrames</a></li><li data-type='method'><a href="Wick.Timeline.html#getFrameByName">getFrameByName</a></li><li data-type='method'><a href="Wick.Timeline.html#getFramesAtPlayheadPosition">getFramesAtPlayheadPosition</a></li><li data-type='method'><a href="Wick.Timeline.html#getFramesInRange">getFramesInRange</a></li><li data-type='method'><a href="Wick.Timeline.html#gotoAndPlay">gotoAndPlay</a></li><li data-type='method'><a href="Wick.Timeline.html#gotoAndStop">gotoAndStop</a></li><li data-type='method'><a href="Wick.Timeline.html#gotoFrame">gotoFrame</a></li><li data-type='method'><a href="Wick.Timeline.html#gotoNextFrame">gotoNextFrame</a></li><li data-type='method'><a href="Wick.Timeline.html#gotoPrevFrame">gotoPrevFrame</a></li><li data-type='method'><a href="Wick.Timeline.html#makeTimelineInBounds">makeTimelineInBounds</a></li><li data-type='method'><a href="Wick.Timeline.html#moveLayer">moveLayer</a></li><li data-type='method'><a href="Wick.Timeline.html#play">play</a></li><li data-type='method'><a href="Wick.Timeline.html#removeLayer">removeLayer</a></li><li data-type='method'><a href="Wick.Timeline.html#resolveFrameGaps">resolveFrameGaps</a></li><li data-type='method'><a href="Wick.Timeline.html#resolveFrameOverlap">resolveFrameOverlap</a></li><li data-type='method'><a href="Wick.Timeline.html#stop">stop</a></li></ul></li><li><a href="Wick.Tools-Wick.Tools.Brush.html">Brush</a></li><li><a href="Wick.Tools-Wick.Tools.Cursor.html">Cursor</a></li><li><a href="Wick.Tools-Wick.Tools.Ellipse.html">Ellipse</a></li><li><a href="Wick.Tools-Wick.Tools.Eraser.html">Eraser</a></li><li><a href="Wick.Tools-Wick.Tools.Eyedropper.html">Eyedropper</a></li><li><a href="Wick.Tools-Wick.Tools.FillBucket.html">FillBucket</a></li><li><a href="Wick.Tools-Wick.Tools.Interact.html">Interact</a></li><li><a href="Wick.Tools-Wick.Tools.Line.html">Line</a></li><li><a href="Wick.Tools-Wick.Tools.None.html">None</a></li><li><a href="Wick.Tools-Wick.Tools.Pan.html">Pan</a></li><li><a href="Wick.Tools-Wick.Tools.Pencil.html">Pencil</a></li><li><a href="Wick.Tools-Wick.Tools.Rectangle.html">Rectangle</a></li><li><a href="Wick.Tools-Wick.Tools.Text.html">Text</a></li><li><a href="Wick.Tools-Wick.Tools.Zoom.html">Zoom</a></li><li><a href="Wick.Transformation.html">Transformation</a><ul class='methods'><li data-type='method'><a href="Wick.Transformation.html#copy">copy</a></li></ul></li><li><a href="Wick.Tween.html">Tween</a><ul class='methods'><li data-type='method'><a href="Wick.Tween.html#.interpolate">interpolate</a></li><li data-type='method'><a href="Wick.Tween.html#applyTransformsToClip">applyTransformsToClip</a></li><li data-type='method'><a href="Wick.Tween.html#getNextTween">getNextTween</a></li><li data-type='method'><a href="Wick.Tween.html#remove">remove</a></li><li data-type='method'><a href="Wick.Tween.html#restrictToFrameSize">restrictToFrameSize</a></li></ul></li><li><a href="Wick.View-Wick.View.Clip.html">Clip</a></li><li><a href="Wick.View-Wick.View.Frame.html">Frame</a></li><li><a href="Wick.View-Wick.View.Path.html">Path</a></li><li><a href="Wick.View-Wick.View.Selection.html">Selection</a></li><li><a href="Wick.WickFile.html">WickFile</a><ul class='methods'><li data-type='method'><a href="Wick.WickFile.html#.fromWickFile">fromWickFile</a></li><li data-type='method'><a href="Wick.WickFile.html#.generateMetaData">generateMetaData</a></li><li data-type='method'><a href="Wick.WickFile.html#.toWickFile">toWickFile</a></li></ul></li><li><a href="Wick.WickObjectFile.html">WickObjectFile</a><ul class='methods'><li data-type='method'><a href="Wick.WickObjectFile.html#.fromWickObjectFile">fromWickObjectFile</a></li><li data-type='method'><a href="Wick.WickObjectFile.html#.toWickObjectFile">toWickObjectFile</a></li></ul></li><li><a href="Wick.ZIPExport.html">ZIPExport</a></li><li><a href="WickObjectCache.html">WickObjectCache</a><ul class='methods'><li data-type='method'><a href="WickObjectCache.html#addObject">addObject</a></li><li data-type='method'><a href="WickObjectCache.html#clear">clear</a></li><li data-type='method'><a href="WickObjectCache.html#clearObjectToBeAutosaved">clearObjectToBeAutosaved</a></li><li data-type='method'><a href="WickObjectCache.html#getActiveObjects">getActiveObjects</a></li><li data-type='method'><a href="WickObjectCache.html#getAllObjects">getAllObjects</a></li><li data-type='method'><a href="WickObjectCache.html#getObjectByUUID">getObjectByUUID</a></li><li data-type='method'><a href="WickObjectCache.html#getObjectsNeedAutosaved">getObjectsNeedAutosaved</a></li><li data-type='method'><a href="WickObjectCache.html#markObjectToBeAutosaved">markObjectToBeAutosaved</a></li><li data-type='method'><a href="WickObjectCache.html#objectNeedsAutosave">objectNeedsAutosave</a></li><li data-type='method'><a href="WickObjectCache.html#removeObject">removeObject</a></li><li data-type='method'><a href="WickObjectCache.html#removeObjectByUUID">removeObjectByUUID</a></li><li data-type='method'><a href="WickObjectCache.html#removeTemporaryObjects">removeTemporaryObjects</a></li><li data-type='method'><a href="WickObjectCache.html#removeUnusedObjects">removeUnusedObjects</a></li></ul></li><li><a href="Wick-Wick.Asset.html">Asset</a></li><li><a href="Wick-Wick.AudioTrack.html">AudioTrack</a></li><li><a href="Wick-Wick.ClipAsset.html">ClipAsset</a></li><li><a href="Wick-Wick.Color.html">Color</a></li><li><a href="Wick-Wick.FileAsset.html">FileAsset</a></li><li><a href="Wick-Wick.FontAsset.html">FontAsset</a></li><li><a href="Wick-Wick.GIFAsset.html">GIFAsset</a></li><li><a href="Wick-Wick.GUIElement.html">GUIElement</a></li><li><a href="Wick-Wick.ImageAsset.html">ImageAsset</a></li><li><a href="Wick-Wick.SoundAsset.html">SoundAsset</a></li><li><a href="Wick-Wick.SVGAsset.html">SVGAsset</a></li><li><a href="Wick-Wick.Tool.html">Tool</a></li><li><a href="Wick-Wick.ToolSettings.html">ToolSettings</a></li><li><a href="Wick-Wick.View.html">View</a></li></ul><h3>Global</h3><ul><li><a href="global.html#type">type</a></li><li><a href="global.html#Wick">Wick</a></li></ul>
</nav>
<div id="main">
<h1 class="page-title">History.js</h1>
<section>
<article>
<pre class="prettyprint source linenums"><code>/*
* Copyright 2020 WICKLETS LLC
*
* This file is part of Wick Engine.
*
* Wick Engine is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Wick Engine is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Wick Engine. If not, see <https://www.gnu.org/licenses/>.
*/
/**
* History utility class for undo/redo functionality.
*/
Wick.History = class {
/**
*
* @type {boolean}
*/
static get VERBOSE () {
return false;
}
/**
* An Enum of all types of state saves.
*/
static get StateType () {
return {
ALL_OBJECTS: 1,
ALL_OBJECTS_WITHOUT_PATHS: 2,
ONLY_VISIBLE_OBJECTS: 3,
};
}
/**
* Creates a new history object
*/
constructor () {
this.reset();
this.lastHistoryPush = Date.now();
}
/**
* Resets history in the editor. This is non-reversible.
*/
reset () {
this._undoStack = [];
this._redoStack = [];
this._snapshots = {};
}
/**
* Returns all objects that are currently referenced by the history.
* @returns {Set} uuids of all objects currently referenced in the history.
*/
getObjectUUIDs () {
let objects = new Set();
for (let state of this._undoStack) {
objects = new Set([...objects, ...state.objects]);
}
for (let state of this._redoStack) {
objects = new Set([...objects, ...state.objects]);
}
return objects;
}
/**
* Push the current state of the ObjectCache to the undo stack.
* @param {number} filter - the filter to choose which objects to serialize. See Wick.History.StateType
* @param {string} actionName - Optional: Name of the action conducted to generate this state. If no name is presented, "Unknown Action" is presented in its place.
*/
pushState (filter, actionName) {
this._redoStack = [];
let now = Date.now();
let state = this._generateState(filter);
let objects = new Set(state.map(obj => obj.uuid));
let stateObject = {
state: this._generateState(filter),
objects: objects,
actionName: actionName || "Unknown Action",
timeSinceLastPush: now - this.lastHistoryPush,
}
this.lastHistoryPush = now;
this._undoStack.push(stateObject);
this._undoStack = this._undoStack.slice(-64); // get the last 64 items in the undo stack
}
/**
* Pop the last state in the undo stack off and apply the new last state to the project.
* @returns {boolean} True if the undo stack is non-empty, false otherwise
*/
popState () {
if(this._undoStack.length <= 1) {
return false;
}
var lastState = this._undoStack.pop();
this._redoStack.push(lastState);
var currentStateObject = this._undoStack[this._undoStack.length - 1];
// 1.17.1 History update, pull actual state information out, aside from names.
var currentState = currentStateObject;
if (currentStateObject.state) {
currentState = currentStateObject.state;
}
this._recoverState(currentState);
return true;
}
/**
* Recover a state that was undone.
* @returns {boolean} True if the redo stack is non-empty, false otherwise
*/
recoverState () {
if(this._redoStack.length === 0) {
return false;
}
var recoveredState = this._redoStack.pop().state;
this._undoStack.push(recoveredState);
this._recoverState(recoveredState);
return true;
}
/**
*
* @param {string} name - the name of the snapshot
* @param {number} filter - the filter to choose which objects to serialize. See Wick.History.StateType
*/
saveSnapshot (name, filter) {
this._snapshots[name] = this._generateState(filter || Wick.History.StateType.ALL_OBJECTS_WITHOUT_PATHS);
}
/**
* Save a state to the list of snapshots to be recovered at any time.
* @param {string} name - the name of the snapshot to recover
*/
loadSnapshot (name) {
this._recoverState(this._snapshots[name]);
}
/**
* The number of states currently stored for undoing.
* @type {number}
*/
get numUndoStates () {
return this._undoStack.length;
}
/**
* The number of states currently stored for redoing.
* @type {number}
*/
get numRedoStates () {
return this._redoStack.length;
}
// NOTE: State saving/recovery can be greatly optimized by only saving the state of the things that were actually changed.
_generateState (stateType) {
var objects = [];
if(stateType === undefined) {
stateType = Wick.History.StateType.ALL_OBJECTS;
}
if(stateType === Wick.History.StateType.ALL_OBJECTS) {
objects = this._getAllObjects();
} else if (stateType === Wick.History.StateType.ALL_OBJECTS_WITHOUT_PATHS) {
objects = this._getAllObjectsWithoutPaths();
} else if(stateType === Wick.History.StateType.ONLY_VISIBLE_OBJECTS) {
objects = this._getVisibleObjects();
} else {
console.error('Wick.History._generateState: A valid stateType is required.');
return;
}
if(Wick.History.VERBOSE) {
console.log('Wick.History._generateState: Serializing ' + objects.length + ' objects using mode=' + stateType);
}
return objects.map(object => {
// The object most likely was altered in some way, make sure those changes will be reflected in the autosave.
object.needsAutosave = true;
return object.serialize();
});
}
_recoverState (state) {
state.forEach(objectData => {
var object = Wick.ObjectCache.getObjectByUUID(objectData.uuid);
object.deserialize(objectData);
});
}
_getAllObjects () {
var objects = Wick.ObjectCache.getActiveObjects(this.project);
objects.push(this.project);
return objects;
}
// this is used for an optimization when snapshots are saved for preview playing.
_getAllObjectsWithoutPaths () {
return this._getAllObjects().filter(object => {
return !(object instanceof Wick.Path);
});
}
_getVisibleObjects () {
var stateObjects = [];
// the project itself (for focus, options, etc)
stateObjects.push(this.project);
// the assets in the project
this.project.getAssets().forEach(asset => {
stateObjects.push(asset);
});
// the focused clip
stateObjects.push(this.project.focus);
// the focused timeline
stateObjects.push(this.project.focus.timeline);
// the selection
stateObjects.push(this.project.selection);
// layers on focused timeline
this.project.activeTimeline.layers.forEach(layer => {
stateObjects.push(layer);
});
// frames on focused timeline
this.project.activeTimeline.frames.forEach(frame => {
stateObjects.push(frame);
});
// objects+tweens on active frames
this.project.activeFrames.forEach(frame => {
frame.paths.forEach(path => {
stateObjects.push(path);
});
frame.clips.forEach(clip => {
stateObjects.push(clip);
});
frame.tweens.forEach(tween => {
stateObjects.push(tween);
})
});
return stateObjects;
}
}
</code></pre>
</article>
</section>
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