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Expand Semantics dartdocs. (#6399)

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I based this on a conversation I had with @mpcomplete.
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Ian Hickson 2016-10-19 17:01:04 -04:00 committed by GitHub
parent 9eef853580
commit 5bde9d284d
1 changed files with 17 additions and 1 deletions
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18
packages/flutter/lib/src/widgets/basic.dart
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@ -2694,10 +2694,26 @@ class MetaData extends SingleChildRenderObjectWidget {
// UTILITY NODES // UTILITY NODES
/// A widget that annotates the widget tree with a description of the meaning of the widgets. /// A widget that annotates the widget tree with a description of the meaning of
/// the widgets.
/// ///
/// Used by accessibility tools, search engines, and other semantic analysis /// Used by accessibility tools, search engines, and other semantic analysis
/// software to determine the meaning of the application. /// software to determine the meaning of the application.
///
/// See also:
///
/// * [MergeSemantics], which marks a subtree as being a single node for
/// accessibility purposes.
/// * [ExcludeSemantics], which excludes a subtree from the semantics tree
/// (which might be useful if it is, e.g., totally decorative and not
/// important to the user).
/// * [RenderObject.semanticsAnnotator], the rendering library API through which
/// the [Semantics] widget is actually implemented.
/// * [SemanticsNode], the object used by the rendering library to represent
/// semantics in the semantics tree.
/// * [SemanticsDebugger], an overlay to help visualize the semantics tree. Can
/// be enabled using [WidgetsApp.showSemanticsDebugger] or
/// [MaterialApp.showSemanticsDebugger].
class Semantics extends SingleChildRenderObjectWidget { class Semantics extends SingleChildRenderObjectWidget {
/// Creates a semantic annotation. /// Creates a semantic annotation.
/// ///