# Wijmo_Grid_Selector.Booleanchecker

## Content

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							<h1>
								BooleanChecker Class
							</h1>
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						<section class="tsd-comment">
							<div class="tsd-comment">
								<div class="lead">
									<p>Class that adds extra checkboxes to header and group cells of
										<a href="wijmo_grid.flexgrid.html">FlexGrid</a> boolean columns to allow setting the values for
									all items or groups.</p>
								</div>
								<p>** Note **: When you attach a <a href="wijmo_grid_selector.booleanchecker.html">BooleanChecker</a> to a
									<a href="wijmo_grid.column.html">Column</a>, you may also want to set the column's
									<a href="wijmo_grid.column.html#aggregate">Column.aggregate</a> property to <a href="../enums/wijmo.aggregate.html#first">Aggregate.First</a>,
									so the grid will create cells on group header rows to hold
								the checkboxes used to set the boolean values for the groups.</p>
							</div>
						</section>
						<section class="tsd-hierarchy">
							<h3>Heirarchy</h3>
							<ul class="tsd-hierarchy">
								<li>
									<a href="wijmo_grid_selector.selector.html" class="tsd-signature-type">Selector</a>
									<ul class="tsd-hierarchy">
										<li>
											<span class="target">BooleanChecker</span>
										</li>
									</ul>
								</li>
							</ul>
						</section>
						<section class="tsd-index-group">
							<section class="tsd-index-panel">
								<div class="tsd-index-content">
									<section class="tsd-index-section ">
										<div class="title">
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											<h3>
												Constructors
											</h3>
										</div>
										<ul class="tsd-index-list">
											<li class="tsd-kind-constructor tsd-parent-kind-class tsd-is-overwrite"><a href="wijmo_grid_selector.booleanchecker.html#constructor" class="tsd-kind-icon">constructor</a></li>
										</ul>
									</section>
									<section class="tsd-index-section ">
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											<div class="gc_api_tree-item_icon_img_wrapper">
												<div class="gc_api_tree-item_icon_img" data-expand="true">
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											<h3>
												Properties
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										<ul class="tsd-index-list">
											<li class="tsd-kind-property tsd-parent-kind-class tsd-is-inherited"><a href="wijmo_grid_selector.booleanchecker.html#arialabel" class="tsd-kind-icon">aria<wbr>Label</a></li>
											<li class="tsd-kind-property tsd-parent-kind-class tsd-is-inherited"><a href="wijmo_grid_selector.booleanchecker.html#column" class="tsd-kind-icon">column</a></li>
											<li class="tsd-kind-property tsd-parent-kind-class tsd-is-inherited"><a href="wijmo_grid_selector.booleanchecker.html#showcheckall" class="tsd-kind-icon">show<wbr>Check<wbr>All</a></li>
										</ul>
									</section>
									<section class="tsd-index-section ">
										<div class="title">
											<div class="gc_api_tree-item_icon_img_wrapper">
												<div class="gc_api_tree-item_icon_img" data-expand="true">
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											<h3>
												Methods
											</h3>
										</div>
										<ul class="tsd-index-list">
											<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="wijmo_grid_selector.booleanchecker.html#oncolumnchanging" class="tsd-kind-icon">on<wbr>Column<wbr>Changing</a></li>
											<li class="tsd-kind-method tsd-parent-kind-class tsd-is-inherited"><a href="wijmo_grid_selector.booleanchecker.html#onitemchecked" class="tsd-kind-icon">on<wbr>Item<wbr>Checked</a></li>
										</ul>
									</section>
									<section class="tsd-index-section ">
										<div class="title">
											<div class="gc_api_tree-item_icon_img_wrapper">
												<div class="gc_api_tree-item_icon_img" data-expand="true">
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											<h3>
												Events
											</h3>
										</div>
										<ul class="tsd-index-list">
											<li class="tsd-kind-event tsd-parent-kind-class tsd-is-inherited"><a href="wijmo_grid_selector.booleanchecker.html#columnchanged" class="tsd-kind-icon">column<wbr>Changed</a></li>
											<li class="tsd-kind-event tsd-parent-kind-class tsd-is-inherited"><a href="wijmo_grid_selector.booleanchecker.html#columnchanging" class="tsd-kind-icon">column<wbr>Changing</a></li>
											<li class="tsd-kind-event tsd-parent-kind-class tsd-is-inherited"><a href="wijmo_grid_selector.booleanchecker.html#itemchecked" class="tsd-kind-icon">item<wbr>Checked</a></li>
										</ul>
									</section>
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							</section>
						</section>
						<section class="tsd-panel-group tsd-member-group ">
							<h2>Constructors</h2>
							<section class="tsd-panel tsd-member tsd-kind-constructor tsd-parent-kind-class tsd-is-overwrite">
								<a name="constructor" class="tsd-anchor"></a>
								<h3>constructor</h3>
								<ul class="tsd-signatures tsd-kind-constructor tsd-parent-kind-class tsd-is-overwrite">
									<li class="tsd-signature tsd-kind-icon">new <wbr>Boolean<wbr>Checker<span class="tsd-signature-symbol">(</span>column<span class="tsd-signature-symbol">?: </span><a href="wijmo_grid.column.html" class="tsd-signature-type">Column</a>, options<span class="tsd-signature-symbol">?: </span><span class="tsd-signature-type">any</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><a href="wijmo_grid_selector.booleanchecker.html" class="tsd-signature-type">BooleanChecker</a></li>
								</ul>
								<ul class="tsd-descriptions">
									<li class="tsd-description">
										<aside class="tsd-sources">
											<p>Overrides <a href="wijmo_grid_selector.selector.html">Selector</a>.<a href="wijmo_grid_selector.selector.html#constructor">constructor</a></p>
										</aside>
										<div class="tsd-comment">
											<div class="lead">
												<p>Initializes a new instance of the <a href="wijmo_grid_selector.booleanchecker.html">BooleanChecker</a> class.</p>
											</div>
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										<h4 class="tsd-parameters-title">Parameters</h4>
										<ul class="tsd-parameters">
											<li>
												<h5><span class="tsd-flag ts-flagOptional">Optional</span> column: <a href="wijmo_grid.column.html" class="tsd-signature-type">Column</a></h5>
												<div class="tsd-comment">
													<div class="lead">
														<p>The <a href="wijmo_grid.column.html">Column</a> that this <a href="wijmo_grid_selector.booleanchecker.html">BooleanChecker</a> should customize.</p>
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												</div>
											</li>
											<li>
												<h5><span class="tsd-flag ts-flagOptional">Optional</span> options: <span class="tsd-signature-type">any</span></h5>
												<div class="tsd-comment">
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														<p>An object containing initialization data for the object.</p>
													</div>
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											</li>
										</ul>
										<h4 class="tsd-returns-title">Returns <a href="wijmo_grid_selector.booleanchecker.html" class="tsd-signature-type">BooleanChecker</a></h4>
									</li>
								</ul>
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						<section class="tsd-panel-group tsd-member-group ">
							<h2>Properties</h2>
							<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-inherited">
								<a name="arialabel" class="tsd-anchor"></a>
								<h3>ariaLabel</h3>
								<div class="tsd-signature tsd-kind-icon">aria<wbr>Label<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">string</span></div>
								<aside class="tsd-sources">
									<p>Inherited from <a href="wijmo_grid_selector.selector.html">Selector</a>.<a href="wijmo_grid_selector.selector.html#arialabel">ariaLabel</a></p>
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								<div class="tsd-comment">
									<div class="lead">
										<p> Gets or sets the  aria label property of selector.</p>
									</div>
									<p>The default value for this property is <strong>''</strong>.</p>
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							</section>
							<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-inherited">
								<a name="column" class="tsd-anchor"></a>
								<h3>column</h3>
								<div class="tsd-signature tsd-kind-icon">column<span class="tsd-signature-symbol">:</span> <a href="wijmo_grid.column.html" class="tsd-signature-type">Column</a><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">null</span></div>
								<aside class="tsd-sources">
									<p>Inherited from <a href="wijmo_grid_selector.selector.html">Selector</a>.<a href="wijmo_grid_selector.selector.html#column">column</a></p>
								</aside>
								<div class="tsd-comment">
									<div class="lead">
										<p>Gets or sets the <a href="wijmo_grid.column.html">Column</a> to be used by this <a href="wijmo_grid_selector.selector.html">Selector</a>.</p>
									</div>
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							</section>
							<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-class tsd-is-inherited">
								<a name="showcheckall" class="tsd-anchor"></a>
								<h3>showCheckAll</h3>
								<div class="tsd-signature tsd-kind-icon">show<wbr>Check<wbr>All<span class="tsd-signature-symbol">:</span> <span class="tsd-signature-type">boolean</span></div>
								<aside class="tsd-sources">
									<p>Inherited from <a href="wijmo_grid_selector.selector.html">Selector</a>.<a href="wijmo_grid_selector.selector.html#showcheckall">showCheckAll</a></p>
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								<div class="tsd-comment">
									<div class="lead">
										<p>Gets or sets a value that determines whether to show a
										'Check All' items checkbox on the column header.</p>
									</div>
									<p>The default value for this property is <strong>true</strong>.</p>
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						<section class="tsd-panel-group tsd-member-group ">
							<h2>Methods</h2>
							<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
								<a name="oncolumnchanging" class="tsd-anchor"></a>
								<h3>onColumnChanging</h3>
								<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
									<li class="tsd-signature tsd-kind-icon">on<wbr>Column<wbr>Changing<span class="tsd-signature-symbol">(</span>e<span class="tsd-signature-symbol">: </span><a href="wijmo.canceleventargs.html" class="tsd-signature-type">CancelEventArgs</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
								</ul>
								<ul class="tsd-descriptions">
									<li class="tsd-description">
										<aside class="tsd-sources">
											<p>Inherited from <a href="wijmo_grid_selector.selector.html">Selector</a>.<a href="wijmo_grid_selector.selector.html#oncolumnchanging">onColumnChanging</a></p>
										</aside>
										<div class="tsd-comment">
											<div class="lead">
												<p>Raises the <a href="wijmo_grid_selector.booleanchecker.html#columnchanging">columnChanging</a> event.</p>
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										<h4 class="tsd-parameters-title">Parameters</h4>
										<ul class="tsd-parameters">
											<li>
												<h5>e: <a href="wijmo.canceleventargs.html" class="tsd-signature-type">CancelEventArgs</a></h5>
												<div class="tsd-comment">
													<p><a href="wijmo.canceleventargs.html">CancelEventArgs</a> that contains the event data.</p>
												</div>
											</li>
										</ul>
										<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
										<p>True if the event was not canceled.</p>
									</li>
								</ul>
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							<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
								<a name="onitemchecked" class="tsd-anchor"></a>
								<h3>onItemChecked</h3>
								<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-class tsd-is-inherited">
									<li class="tsd-signature tsd-kind-icon">on<wbr>Item<wbr>Checked<span class="tsd-signature-symbol">(</span>e<span class="tsd-signature-symbol">?: </span><a href="wijmo.eventargs.html" class="tsd-signature-type">EventArgs</a><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
								</ul>
								<ul class="tsd-descriptions">
									<li class="tsd-description">
										<aside class="tsd-sources">
											<p>Inherited from <a href="wijmo_grid_selector.selector.html">Selector</a>.<a href="wijmo_grid_selector.selector.html#onitemchecked">onItemChecked</a></p>
										</aside>
										<div class="tsd-comment">
											<div class="lead">
												<p>Raises the <a href="wijmo_grid_selector.booleanchecker.html#itemchecked">itemChecked</a> event.</p>
											</div>
										</div>
										<h4 class="tsd-parameters-title">Parameters</h4>
										<ul class="tsd-parameters">
											<li>
												<h5><span class="tsd-flag ts-flagOptional">Optional</span> e: <a href="wijmo.eventargs.html" class="tsd-signature-type">EventArgs</a></h5>
											</li>
										</ul>
										<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
									</li>
								</ul>
							</section>
						</section>
						<section class="tsd-panel-group tsd-member-group ">
							<h2>Events</h2>
							<section class="tsd-panel tsd-member tsd-kind-event tsd-parent-kind-class tsd-is-inherited">
								<a name="columnchanged" class="tsd-anchor"></a>
								<h3>columnChanged</h3>
								<div class="tsd-signature tsd-kind-icon">column<wbr>Changed<span class="tsd-signature-symbol">:</span> <a href="wijmo.event.html" class="tsd-signature-type">Event</a><span class="tsd-signature-symbol">&lt;</span><a href="wijmo_grid_selector.selector.html" class="tsd-signature-type">Selector</a><span class="tsd-signature-symbol">, </span><a href="wijmo.eventargs.html" class="tsd-signature-type">EventArgs</a><span class="tsd-signature-symbol">&gt;</span></div>
								<aside class="tsd-sources">
									<p>Inherited from <a href="wijmo_grid_selector.selector.html">Selector</a>.<a href="wijmo_grid_selector.selector.html#columnchanged">columnChanged</a></p>
								</aside>
								<div class="tsd-comment">
									<div class="lead">
										<p>Occurs after the value of the <a href="wijmo_grid_selector.booleanchecker.html#column">column</a> property changes.</p>
									</div>
								</div>
							</section>
							<section class="tsd-panel tsd-member tsd-kind-event tsd-parent-kind-class tsd-is-inherited">
								<a name="columnchanging" class="tsd-anchor"></a>
								<h3>columnChanging</h3>
								<div class="tsd-signature tsd-kind-icon">column<wbr>Changing<span class="tsd-signature-symbol">:</span> <a href="wijmo.event.html" class="tsd-signature-type">Event</a><span class="tsd-signature-symbol">&lt;</span><a href="wijmo_grid_selector.selector.html" class="tsd-signature-type">Selector</a><span class="tsd-signature-symbol">, </span><a href="wijmo.canceleventargs.html" class="tsd-signature-type">CancelEventArgs</a><span class="tsd-signature-symbol">&gt;</span></div>
								<aside class="tsd-sources">
									<p>Inherited from <a href="wijmo_grid_selector.selector.html">Selector</a>.<a href="wijmo_grid_selector.selector.html#columnchanging">columnChanging</a></p>
								</aside>
								<div class="tsd-comment">
									<div class="lead">
										<p>Occurs before the value of the <a href="wijmo_grid_selector.booleanchecker.html#column">column</a> property changes.</p>
									</div>
								</div>
							</section>
							<section class="tsd-panel tsd-member tsd-kind-event tsd-parent-kind-class tsd-is-inherited">
								<a name="itemchecked" class="tsd-anchor"></a>
								<h3>itemChecked</h3>
								<div class="tsd-signature tsd-kind-icon">item<wbr>Checked<span class="tsd-signature-symbol">:</span> <a href="wijmo.event.html" class="tsd-signature-type">Event</a><span class="tsd-signature-symbol">&lt;</span><a href="wijmo_grid_selector.selector.html" class="tsd-signature-type">Selector</a><span class="tsd-signature-symbol">, </span><a href="wijmo.eventargs.html" class="tsd-signature-type">EventArgs</a><span class="tsd-signature-symbol">&gt;</span></div>
								<aside class="tsd-sources">
									<p>Inherited from <a href="wijmo_grid_selector.selector.html">Selector</a>.<a href="wijmo_grid_selector.selector.html#itemchecked">itemChecked</a></p>
								</aside>
								<div class="tsd-comment">
									<div class="lead">
										<p>Occurs when the user checks an item on this column.</p>
									</div>
								</div>
							</section>
						</section>
					</div>