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git-subtree-dir: submodules/AsyncDisplayKit git-subtree-mainline: d06f423e0ed3df1fed9bd10d79ee312a9179b632 git-subtree-split: 02bedc12816e251ad71777f9d2578329b6d2bef6
558 lines
14 KiB
HTML
Executable File
558 lines
14 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>ASCellNode Class Reference</title>
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<h1 id="library-title">
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<a href="../index.html"> </a>
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<p id="developer-home">
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<a href="../index.html">AsyncDisplayKit</a>
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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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On This Page
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<div class="chevy chevron-left"></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="overview">Overview</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/highlighted">highlighted</option>
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<option value="//api/name/indexPath">indexPath</option>
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<option value="//api/name/neverShowPlaceholders">neverShowPlaceholders</option>
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<option value="//api/name/owningNode">owningNode</option>
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<option value="//api/name/selected">selected</option>
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</optgroup>
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<optgroup label="Instance Methods">
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<option value="//api/name/applyLayoutAttributes:">- applyLayoutAttributes:</option>
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<option value="//api/name/cellNodeVisibilityEvent:inScrollView:withCellFrame:">- cellNodeVisibilityEvent:inScrollView:withCellFrame:</option>
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<option value="//api/name/initWithViewControllerBlock:didLoadBlock:">- initWithViewControllerBlock:didLoadBlock:</option>
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</optgroup>
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</select>
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</label>
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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">ASCellNode Class 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>Inherits from</th>
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<td><a href="../Classes/ASDisplayNode.html">ASDisplayNode</a> : ASDealloc2MainObject</td>
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</tr><tr>
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<th>Declared in</th>
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<td>ASCellNode.h</td>
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</tr>
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</tbody></table></div>
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<div class="section section-overview">
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<a title="Overview" name="overview"></a>
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<h2 class="subtitle subtitle-overview">Overview</h2>
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<ul>
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<li><p>Generic cell node. Subclass this instead of <code>ASDisplayNode</code> to use with <code>ASTableView</code> and <code>ASCollectionView</code>.</p></li>
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<li><p>@note When a cell node is contained inside a collection view (or table view),</p></li>
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<li>calling <code>-setNeedsLayout</code> will also notify the collection on the main thread</li>
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<li>so that the collection can update its item layout if the cell’s size changed.</li>
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</ul>
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</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/neverShowPlaceholders" title="neverShowPlaceholders"></a>
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<h3 class="method-title"><code><a href="#//api/name/neverShowPlaceholders"> neverShowPlaceholders</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>When enabled, ensures that the cell is completely displayed before allowed onscreen.</p>
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<p>@default NO</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nonatomic, assign) BOOL neverShowPlaceholders</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>Normally, ASCellNodes are preloaded and have finished display before they are onscreen.
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However, if the Table or Collection’s rangeTuningParameters are set to small values (or 0),
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or if the user is scrolling rapidly on a slow device, it is possible for a cell’s display to
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be incomplete when it becomes visible.</p>
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<p>In this case, normally placeholder states are shown and scrolling continues uninterrupted.
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The finished, drawn content is then shown as soon as it is ready.</p>
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<p>With this property set to YES, the main thread will be blocked until display is complete for
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the cell. This is more similar to UIKit, and in fact makes AsyncDisplayKit scrolling visually
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indistinguishable from UIKit’s, except being faster.</p>
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<p>Using this option does not eliminate all of the performance advantages of AsyncDisplayKit.
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Normally, a cell has been preloading and is almost done when it reaches the screen, so the
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blocking time is very short. If the rangeTuningParameters are set to 0, still this option
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outperforms UIKit: while the main thread is waiting, subnode display executes concurrently.</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">ASCellNode.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/selected" title="selected"></a>
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<h3 class="method-title"><code><a href="#//api/name/selected"> selected</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 Boolean value that is synchronized with the underlying collection or tableView cell property.
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Setting this value is equivalent to calling selectItem / deselectItem on the collection or table.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nonatomic, assign, getter=isSelected) BOOL selected</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">ASCellNode.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/highlighted" title="highlighted"></a>
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<h3 class="method-title"><code><a href="#//api/name/highlighted"> highlighted</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 Boolean value that is synchronized with the underlying collection or tableView cell property.
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Setting this value is equivalent to calling highlightItem / unHighlightItem on the collection or table.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nonatomic, assign, getter=isHighlighted) BOOL highlighted</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">ASCellNode.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/indexPath" title="indexPath"></a>
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<h3 class="method-title"><code><a href="#//api/name/indexPath"> indexPath</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 current index path of this cell node, or @c nil if this node is
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not a valid item inside a table node or collection node.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (nonatomic, readonly, nullable) NSIndexPath *indexPath</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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<div class="note"><p><strong>Note:</strong> This property must be accessed on the main thread.</p></div>
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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">ASCellNode.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/owningNode" title="owningNode"></a>
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<h3 class="method-title"><code><a href="#//api/name/owningNode"> owningNode</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 owning node (ASCollectionNode/ASTableNode) of this cell node, or @c nil if this node is
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not a valid item inside a table node or collection node or if those nodes are nil.</p>
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</div>
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<div class="method-subsection method-declaration"><code>@property (weak, nonatomic, readonly, nullable) ASDisplayNode *owningNode</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">ASCellNode.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/applyLayoutAttributes:" title="applyLayoutAttributes:"></a>
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<h3 class="method-title"><code><a href="#//api/name/applyLayoutAttributes:">– applyLayoutAttributes:</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>Called by the system when ASCellNode is used with an ASCollectionNode. It will not be called by ASTableNode.
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When the UICollectionViewLayout object returns a new UICollectionViewLayoutAttributes object, the corresponding ASCellNode will be updated.
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See UICollectionViewCell’s applyLayoutAttributes: for a full description.</p>
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</div>
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<div class="method-subsection method-declaration"><code>- (void)applyLayoutAttributes:(UICollectionViewLayoutAttributes *)<em>layoutAttributes</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">ASCellNode.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/initWithViewControllerBlock:didLoadBlock:" title="initWithViewControllerBlock:didLoadBlock:"></a>
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<h3 class="method-title"><code><a href="#//api/name/initWithViewControllerBlock:didLoadBlock:">– initWithViewControllerBlock:didLoadBlock:</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>Initializes a cell with a given view controller block.</p>
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</div>
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<div class="method-subsection method-declaration"><code>- (instancetype)initWithViewControllerBlock:(ASDisplayNodeViewControllerBlock)<em>viewControllerBlock</em> didLoadBlock:(nullable ASDisplayNodeDidLoadBlock)<em>didLoadBlock</em></code></div>
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<div class="method-subsection arguments-section parameters">
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<h4 class="method-subtitle parameter-title">Parameters</h4>
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<table class="argument-def parameter-def">
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<tr>
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<th scope="row" class="argument-name"><code>viewControllerBlock</code></th>
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<td><p>The block that will be used to create the backing view controller.</p></td>
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</tr>
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<tr>
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<th scope="row" class="argument-name"><code>didLoadBlock</code></th>
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<td><p>The block that will be called after the view controller’s view is loaded.</p></td>
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</tr>
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</table>
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</div>
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<div class="method-subsection return">
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<h4 class="method-subtitle parameter-title">Return Value</h4>
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<p>An ASCellNode created using the root view of the view controller provided by the viewControllerBlock.
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The view controller’s root view is resized to match the calculated size produced during layout.</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">ASCellNode.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/cellNodeVisibilityEvent:inScrollView:withCellFrame:" title="cellNodeVisibilityEvent:inScrollView:withCellFrame:"></a>
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<h3 class="method-title"><code><a href="#//api/name/cellNodeVisibilityEvent:inScrollView:withCellFrame:">– cellNodeVisibilityEvent:inScrollView:withCellFrame:</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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||
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<div class="method-subsection brief-description">
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<p>Notifies the cell node of certain visibility events, such as changing visible rect.</p>
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</div>
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<div class="method-subsection method-declaration"><code>- (void)cellNodeVisibilityEvent:(ASCellNodeVisibilityEvent)<em>event</em> inScrollView:(nullable UIScrollView *)<em>scrollView</em> withCellFrame:(CGRect)<em>cellFrame</em></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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||
<div class="warning"><p><strong>Warning:</strong> In cases where an ASCellNode is used as a plain node – i.e. not returned from the
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nodeBlockForItemAtIndexPath/nodeForItemAtIndexPath data source methods – this method will
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deliver only the <code>Visible</code> and <code>Invisible</code> events, <code>scrollView</code> will be nil, and
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<code>cellFrame</code> will be the zero rect.</p></div>
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||
</div>
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||
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||
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||
<div class="method-subsection declared-in-section">
|
||
<h4 class="method-subtitle">Declared In</h4>
|
||
<p><code class="declared-in-ref">ASCellNode.h</code></p>
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</div>
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||
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||
</div>
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</div>
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</div>
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</div>
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</div>
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||
</main>
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||
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||
<footer>
|
||
<div class="footer-copyright">
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||
|
||
<p class="copyright">Copyright © 2016 AsyncDisplayKit. All rights reserved. Updated: 2016-11-05</p>
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||
|
||
|
||
<p class="generator">Generated by <a href="http://appledoc.gentlebytes.com">appledoc 2.2.1 (build 1334)</a>.</p>
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||
|
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</div>
|
||
</footer>
|
||
</div>
|
||
</div>
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||
</article>
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||
|
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<script src="../js/script.js"></script>
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</body>
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</html> |