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<td >Qt 5.12</td><td ><a href="qtqml-index.html">Qt QML</a></td><td ><a href="qtqml-qmlmodule.html">QML Types</a></td><td >DelegateChooser QML Type</td></tr></table><table class="buildversion"><tr>
<td id="buildversion" width="100%" align="right"><a href="qtqml-index.html">Qt 5.12.6 Reference Documentation</a></td>
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<h3><a name="toc">Contents</a></h3>
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<li class="level1"><a href="#properties">Properties</a></li>
<li class="level1"><a href="#details">Detailed Description</a></li>
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<h1 class="title">DelegateChooser QML Type</h1>
<span class="subtitle"></span>
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<p>Allows a view to use different delegates for different types of items in the model. <a href="#details">More...</a></p>
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<tr><td class="memItemLeft rightAlign topAlign"> Import Statement:</td><td class="memItemRight bottomAlign"> import Qt.labs.qmlmodels 1.0</td></tr></table></div><ul>
<li><a href="qml-qt-labs-qmlmodels-delegatechooser-members.html">List of all members, including inherited members</a></li>
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<h2 id="properties">Properties</h2>
<ul>
<li class="fn"><b><b><a href="qml-qt-labs-qmlmodels-delegatechooser.html#choices-prop">choices</a></b></b> : list<DelegateChoice></li>
<li class="fn"><b><b><a href="qml-qt-labs-qmlmodels-delegatechooser.html#role-prop">role</a></b></b> : string</li>
</ul>
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<a name="details"></a>
<h2 id="details">Detailed Description</h2>
<p>The <a href="qml-qt-labs-qmlmodels-delegatechooser.html">DelegateChooser</a> is a special <a href="qml-qtqml-component.html">Component</a> type intended for those scenarios where a Component is required by a view and used as a delegate. <a href="qml-qt-labs-qmlmodels-delegatechooser.html">DelegateChooser</a> encapsulates a set of <a href="qml-qt-labs-qmlmodels-delegatechoice.html">DelegateChoice</a>s. These choices are used to determine the delegate that will be instantiated for each item in the model. The selection of the choice is performed based on the value that a model item has for <a href="qml-qt-labs-qmlmodels-delegatechooser.html#role-prop">role</a>, and also based on index.</p>
<p><a href="qml-qt-labs-qmlmodels-delegatechooser.html">DelegateChooser</a> is commonly used when a view needs to display a set of delegates that are significantly different from each other. For example, a typical phone settings view might include toggle switches, sliders, radio buttons, and other visualizations based on the type of each setting. In this case, <a href="qml-qt-labs-qmlmodels-delegatechooser.html">DelegateChooser</a> could provide an easy way to associate a different type of delegate with each setting:</p>
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<p><b>Note: </b>This type is intended to transparently work only with TableView and any <a href="qml-qtqml-models-delegatemodel.html">DelegateModel</a>-based view. Views (including user-defined views) that aren't internally based on a <a href="qml-qtqml-models-delegatemodel.html">DelegateModel</a> need to explicitly support this type of component to make it function as described.</p><p><b>See also </b><a href="qml-qt-labs-qmlmodels-delegatechoice.html">DelegateChoice</a>.</p>
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<h2>Property Documentation</h2>
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<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="choices-prop">
<td class="tblQmlPropNode"><p>
<a name="choices-prop"></a><span class="qmldefault">[default] </span><span class="name">choices</span> : <span class="type"><a href="qml-list.html">list</a></span><<span class="type"><a href="qml-qt-labs-qmlmodels-delegatechoice.html">DelegateChoice</a></span>></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>The list of DelegateChoices for the chooser.</p>
<p>The list is treated as an ordered list, where the first <a href="qml-qt-labs-qmlmodels-delegatechoice.html">DelegateChoice</a> to match will be used be a view.</p>
<p>It should not generally be necessary to refer to the <code>choices</code> property, as it is the default property for <a href="qml-qt-labs-qmlmodels-delegatechooser.html">DelegateChooser</a> and thus all child items are automatically assigned to this property.</p>
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<div class="qmlitem"><div class="qmlproto">
<div class="table"><table class="qmlname">
<tr valign="top" class="odd" id="role-prop">
<td class="tblQmlPropNode"><p>
<a name="role-prop"></a><span class="name">role</span> : <span class="type"><a href="qml-string.html">string</a></span></p></td></tr>
</table></div>
</div><div class="qmldoc"><p>This property holds the role used to determine the delegate for a given model item.</p>
<p><b>See also </b><a href="qml-qt-labs-qmlmodels-delegatechoice.html">DelegateChoice</a>.</p>
</div></div><!-- @@@role -->
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