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635 lines
16 KiB
HTML
Executable File
635 lines
16 KiB
HTML
Executable File
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>ASDisplayNode(Beta) Category Reference</title>
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<link rel="stylesheet" href="../css/style.css">
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<meta name="viewport" content="initial-scale=1, maximum-scale=1.4">
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<meta name="generator" content="appledoc 2.2.1 (build 1334)">
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</head>
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<body class="appledoc">
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<header>
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<div class="container" class="hide-in-xcode">
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<h1 id="library-title">
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<a href="../index.html"> </a>
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</h1>
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<p id="developer-home">
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<a href="../index.html">AsyncDisplayKit</a>
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</p>
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</div>
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</header>
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<aside>
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<div class="container">
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<nav>
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<ul id="header-buttons" role="toolbar">
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<li><a href="../index.html">Index</a></li>
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<li><a href="../hierarchy.html">Hierarchy</a></li>
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<li id="on-this-page" role="navigation">
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<label>
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On This Page
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<div class="chevron">
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<div class="chevy chevron-left"></div>
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<div class="chevy chevron-right"></div>
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</div>
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<select id="jump-to">
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<option value="top">Jump To…</option>
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<option value="tasks">Tasks</option>
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<optgroup label="Properties">
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<option value="//api/name/didDisplayNodeContentWithRenderingContext">didDisplayNodeContentWithRenderingContext</option>
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<option value="//api/name/eventLog">eventLog</option>
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<option value="//api/name/measurementOptions">measurementOptions</option>
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<option value="//api/name/performanceMeasurements">performanceMeasurements</option>
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<option value="//api/name/willDisplayNodeContentWithRenderingContext">willDisplayNodeContentWithRenderingContext</option>
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</optgroup>
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<optgroup label="Class Methods">
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<option value="//api/name/setRangeModeForMemoryWarnings:">+ setRangeModeForMemoryWarnings:</option>
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<option value="//api/name/suppressesInvalidCollectionUpdateExceptions">+ suppressesInvalidCollectionUpdateExceptions</option>
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</optgroup>
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<optgroup label="Instance Methods">
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<option value="//api/name/_logEventWithBacktrace:format:">- _logEventWithBacktrace:format:</option>
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<option value="//api/name/hierarchyDisplayDidFinish">- hierarchyDisplayDidFinish</option>
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<option value="//api/name/placeholderShouldPersist">- placeholderShouldPersist</option>
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<option value="//api/name/recursivelyEnsureDisplaySynchronously:">- recursivelyEnsureDisplaySynchronously:</option>
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</optgroup>
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</select>
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</label>
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</li>
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</ul>
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</nav>
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</div>
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</aside>
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<article>
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<div id="overview_contents" class="container">
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<div id="content">
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<main role="main">
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<h1 class="title">ASDisplayNode(Beta) Category Reference</h1>
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<div class="section section-specification"><table cellspacing="0"><tbody>
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<tr>
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<th>Declared in</th>
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<td>ASDisplayNode+Beta.h</td>
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</tr>
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</tbody></table></div>
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<div class="section section-tasks">
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<a title="Tasks" name="tasks"></a>
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<div class="task-list">
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<div class="section-method">
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<a name="//api/name/suppressesInvalidCollectionUpdateExceptions" title="suppressesInvalidCollectionUpdateExceptions"></a>
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<h3 class="method-title"><code><a href="#//api/name/suppressesInvalidCollectionUpdateExceptions">+ suppressesInvalidCollectionUpdateExceptions</a></code>
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</h3>
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<div class="method-info">
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<div class="pointy-thing"></div>
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<div class="method-info-container">
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<div class="method-subsection brief-description">
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<p>ASTableView and ASCollectionView now throw exceptions on invalid updates
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like their UIKit counterparts. If YES, these classes will log messages
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on invalid updates rather than throwing exceptions.</p>
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</div>
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<div class="method-subsection method-declaration"><code>+ (BOOL)suppressesInvalidCollectionUpdateExceptions</code></div>
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<div class="method-subsection discussion-section">
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<h4 class="method-subtitle">Discussion</h4>
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<p>Note that even if AsyncDisplayKit’s exception is suppressed, the app may still crash
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as it proceeds with an invalid update.</p>
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<p>This property defaults to NO. It will be removed in a future release.</p>
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</div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<p><code class="declared-in-ref">ASDisplayNode+Beta.h</code></p>
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</div>
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</div>
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</div>
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</div><div class="section-method">
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<a name="//api/name/recursivelyEnsureDisplaySynchronously:" title="recursivelyEnsureDisplaySynchronously:"></a>
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<h3 class="method-title"><code><a href="#//api/name/recursivelyEnsureDisplaySynchronously:">– recursivelyEnsureDisplaySynchronously:</a></code>
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</h3>
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<div class="method-info">
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<div class="pointy-thing"></div>
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<div class="method-info-container">
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<div class="method-subsection brief-description">
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<p>Recursively ensures node and all subnodes are displayed.</p>
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</div>
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<div class="method-subsection method-declaration"><code>- (void)recursivelyEnsureDisplaySynchronously:(BOOL)<em>synchronously</em></code></div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<p><code class="declared-in-ref">ASDisplayNode+Beta.h</code></p>
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</div>
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</div>
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</div>
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</div><div class="section-method">
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<a name="//api/name/willDisplayNodeContentWithRenderingContext" title="willDisplayNodeContentWithRenderingContext"></a>
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<h3 class="method-title"><code><a href="#//api/name/willDisplayNodeContentWithRenderingContext"> willDisplayNodeContentWithRenderingContext</a></code>
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</h3>
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<div class="method-info">
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<div class="pointy-thing"></div>
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<div class="method-info-container">
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<div class="method-subsection brief-description">
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<p>allow modification of a context before the node’s content is drawn</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nonatomic, copy, nullable) ASDisplayNodeContextModifier willDisplayNodeContentWithRenderingContext</code></div>
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<div class="method-subsection discussion-section">
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<h4 class="method-subtitle">Discussion</h4>
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<p>Set the block to be called after the context has been created and before the node’s content is drawn.
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You can override this to modify the context before the content is drawn. You are responsible for saving and
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restoring context if necessary. Restoring can be done in contextDidDisplayNodeContent
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This block can be called from <em>any</em> thread and it is unsafe to access any UIKit main thread properties from it.</p>
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</div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<p><code class="declared-in-ref">ASDisplayNode+Beta.h</code></p>
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</div>
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</div>
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</div>
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</div><div class="section-method">
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<a name="//api/name/didDisplayNodeContentWithRenderingContext" title="didDisplayNodeContentWithRenderingContext"></a>
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<h3 class="method-title"><code><a href="#//api/name/didDisplayNodeContentWithRenderingContext"> didDisplayNodeContentWithRenderingContext</a></code>
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</h3>
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<div class="method-info">
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<div class="pointy-thing"></div>
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<div class="method-info-container">
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<div class="method-subsection brief-description">
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<p>allow modification of a context after the node’s content is drawn</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nonatomic, copy, nullable) ASDisplayNodeContextModifier didDisplayNodeContentWithRenderingContext</code></div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<p><code class="declared-in-ref">ASDisplayNode+Beta.h</code></p>
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</div>
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</div>
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</div>
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</div><div class="section-method">
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<a name="//api/name/measurementOptions" title="measurementOptions"></a>
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<h3 class="method-title"><code><a href="#//api/name/measurementOptions"> measurementOptions</a></code>
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</h3>
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<div class="method-info">
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<div class="pointy-thing"></div>
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<div class="method-info-container">
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<div class="method-subsection brief-description">
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<p>A bitmask representing which actions (layout spec, layout generation) should be measured.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nonatomic, assign) ASDisplayNodePerformanceMeasurementOptions measurementOptions</code></div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<p><code class="declared-in-ref">ASDisplayNode+Beta.h</code></p>
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</div>
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</div>
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</div>
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</div><div class="section-method">
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<a name="//api/name/performanceMeasurements" title="performanceMeasurements"></a>
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<h3 class="method-title"><code><a href="#//api/name/performanceMeasurements"> performanceMeasurements</a></code>
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</h3>
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<div class="method-info">
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<div class="pointy-thing"></div>
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<div class="method-info-container">
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<div class="method-subsection brief-description">
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<p>A simple struct representing performance measurements collected.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nonatomic, assign, readonly) ASDisplayNodePerformanceMeasurements performanceMeasurements</code></div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<p><code class="declared-in-ref">ASDisplayNode+Beta.h</code></p>
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</div>
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</div>
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</div>
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</div><div class="section-method">
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<a name="//api/name/placeholderShouldPersist" title="placeholderShouldPersist"></a>
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<h3 class="method-title"><code><a href="#//api/name/placeholderShouldPersist">– placeholderShouldPersist</a></code>
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</h3>
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<div class="method-info">
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<div class="pointy-thing"></div>
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<div class="method-info-container">
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<div class="method-subsection brief-description">
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<p>Currently used by ASNetworkImageNode and ASMultiplexImageNode to allow their placeholders to stay if they are loading an image from the network.
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Otherwise, a display pass is scheduled and completes, but does not actually draw anything - and ASDisplayNode considers the element finished.</p>
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</div>
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<div class="method-subsection method-declaration"><code>- (BOOL)placeholderShouldPersist</code></div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<p><code class="declared-in-ref">ASDisplayNode+Beta.h</code></p>
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</div>
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</div>
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</div>
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</div><div class="section-method">
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<a name="//api/name/hierarchyDisplayDidFinish" title="hierarchyDisplayDidFinish"></a>
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<h3 class="method-title"><code><a href="#//api/name/hierarchyDisplayDidFinish">– hierarchyDisplayDidFinish</a></code>
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</h3>
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<div class="method-info">
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<div class="pointy-thing"></div>
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<div class="method-info-container">
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<div class="method-subsection brief-description">
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<p>Indicates that the receiver and all subnodes have finished displaying. May be called more than once, for example if the receiver has
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a network image node. This is called after the first display pass even if network image nodes have not downloaded anything (text would be done,
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and other nodes that are ready to do their final display). Each render of every progressive jpeg network node would cause this to be called, so
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this hook could be called up to 1 + (pJPEGcount * pJPEGrenderCount) times. The render count depends on how many times the downloader calls the
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progressImage block.</p>
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</div>
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<div class="method-subsection method-declaration"><code>- (void)hierarchyDisplayDidFinish</code></div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<p><code class="declared-in-ref">ASDisplayNode+Beta.h</code></p>
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</div>
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</div>
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</div>
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</div><div class="section-method">
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<a name="//api/name/setRangeModeForMemoryWarnings:" title="setRangeModeForMemoryWarnings:"></a>
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<h3 class="method-title"><code><a href="#//api/name/setRangeModeForMemoryWarnings:">+ setRangeModeForMemoryWarnings:</a></code>
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</h3>
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<div class="method-info">
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<div class="pointy-thing"></div>
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<div class="method-info-container">
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<div class="method-subsection brief-description">
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<p>Only ASLayoutRangeModeVisibleOnly or ASLayoutRangeModeLowMemory are recommended. Default is ASLayoutRangeModeVisibleOnly,
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because this is the only way to ensure an application will not have blank / flashing views as the user navigates back after
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a memory warning. Apps that wish to use the more effective / aggressive ASLayoutRangeModeLowMemory may need to take steps
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to mitigate this behavior, including: restoring a larger range mode to the next controller before the user navigates there,
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enabling .neverShowPlaceholders on ASCellNodes so that the navigation operation is blocked on redisplay completing, etc.</p>
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</div>
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<div class="method-subsection method-declaration"><code>+ (void)setRangeModeForMemoryWarnings:(ASLayoutRangeMode)<em>rangeMode</em></code></div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<p><code class="declared-in-ref">ASDisplayNode+Beta.h</code></p>
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</div>
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</div>
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</div>
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</div><div class="section-method">
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<a name="//api/name/_logEventWithBacktrace:format:" title="_logEventWithBacktrace:format:"></a>
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<h3 class="method-title"><code><a href="#//api/name/_logEventWithBacktrace:format:">– _logEventWithBacktrace:format:</a></code>
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</h3>
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<div class="method-info">
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<div class="pointy-thing"></div>
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<div class="method-info-container">
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<div class="method-subsection brief-description">
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<p>The primitive event tracing method. You shouldn’t call this. Use the ASDisplayNodeLogEvent macro instead.</p>
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</div>
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<div class="method-subsection method-declaration"><code>- (void)_logEventWithBacktrace:(NSArray<NSString*> *)<em>backtrace</em> format:(NSString *)<em>format</em>, <em>...</em></code></div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<p><code class="declared-in-ref">ASDisplayNode+Beta.h</code></p>
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</div>
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</div>
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</div>
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</div><div class="section-method">
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<a name="//api/name/eventLog" title="eventLog"></a>
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<h3 class="method-title"><code><a href="#//api/name/eventLog"> eventLog</a></code>
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</h3>
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<div class="method-info">
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<div class="pointy-thing"></div>
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<div class="method-info-container">
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<div class="method-subsection brief-description">
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<p>The most recent trace events for this node. Max count is ASDISPLAYNODE_EVENTLOG_CAPACITY.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (readonly, copy) NSArray *eventLog</code></div>
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<div class="method-subsection declared-in-section">
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<h4 class="method-subtitle">Declared In</h4>
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<p><code class="declared-in-ref">ASDisplayNode+Beta.h</code></p>
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