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14 <div id=Content><div class="CClass"><div class=CTopic id=MainTopic><h1 class=CTitle><a name="OpenLayers.Layer.Vector.RootContainer"></a>OpenLayers.<wbr>Layer.<wbr>Vector.<wbr>RootContainer</h1><div class=CBody><p>A special layer type to combine multiple vector layers inside a single renderer root container. This class is not supposed to be instantiated from user space, it is a helper class for controls that require event processing for multiple vector layers.</p><h4 class=CHeading>Inherits from</h4><ul><li><a href="../Vector-js.html#OpenLayers.Layer.Vector" class=LClass id=link8 onMouseOver="ShowTip(event, 'tt8', 'link8')" onMouseOut="HideTip('tt8')">OpenLayers.Layer.Vector</a></li></ul><!--START_ND_SUMMARY--><div class=Summary><div class=STitle>Summary</div><div class=SBorder><table border=0 cellspacing=0 cellpadding=0 class=STable><tr class="SMain"><td class=SEntry><a href="#OpenLayers.Layer.Vector.RootContainer" >OpenLayers.<wbr>Layer.<wbr>Vector.<wbr>RootContainer</a></td><td class=SDescription>A special layer type to combine multiple vector layers inside a single renderer root container. </td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Layer.Vector.RootContainer.Properties" >Properties</a></td><td class=SDescription></td></tr><tr class="SProperty SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.RootContainer.displayInLayerSwitcher" >displayInLayerSwitcher</a></td><td class=SDescription>Set to false for this layer type</td></tr><tr class="SProperty SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.RootContainer.layers" >layers</a></td><td class=SDescription>Layers that are attached to this container. </td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Layer.Vector.RootContainer.Constructor" >Constructor</a></td><td class=SDescription></td></tr><tr class="SConstructor SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.RootContainer.OpenLayers.Layer.Vector.RootContainer" >OpenLayers.<wbr>Layer.<wbr>Vector.<wbr>RootContainer</a></td><td class=SDescription>Create a new root container for multiple vector layer. </td></tr><tr class="SGroup SIndent1"><td class=SEntry><a href="#OpenLayers.Layer.Vector.RootContainer.Functions" >Functions</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.RootContainer.display" id=link1 onMouseOver="ShowTip(event, 'tt1', 'link1')" onMouseOut="HideTip('tt1')">display</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.RootContainer.getFeatureFromEvent" id=link2 onMouseOver="ShowTip(event, 'tt2', 'link2')" onMouseOut="HideTip('tt2')">getFeatureFromEvent</a></td><td class=SDescription>walk through the layers to find the feature returned by the event</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.RootContainer.setMap" id=link3 onMouseOver="ShowTip(event, 'tt3', 'link3')" onMouseOut="HideTip('tt3')">setMap</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.RootContainer.removeMap" id=link4 onMouseOver="ShowTip(event, 'tt4', 'link4')" onMouseOut="HideTip('tt4')">removeMap</a></td><td class=SDescription></td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.RootContainer.collectRoots" id=link5 onMouseOver="ShowTip(event, 'tt5', 'link5')" onMouseOut="HideTip('tt5')">collectRoots</a></td><td class=SDescription>Collects the root nodes of all layers this control is configured with and moveswien the nodes to this control’s layer</td></tr><tr class="SFunction SIndent2"><td class=SEntry><a href="#OpenLayers.Layer.Vector.RootContainer.resetRoots" id=link6 onMouseOver="ShowTip(event, 'tt6', 'link6')" onMouseOut="HideTip('tt6')">resetRoots</a></td><td class=SDescription>Resets the root nodes back into the layers they belong to.</td></tr><tr class="SFunction SIndent2 SMarked"><td class=SEntry><a href="#OpenLayers.Layer.Vector.RootContainer.handleChangeLayer" id=link7 onMouseOver="ShowTip(event, 'tt7', 'link7')" onMouseOut="HideTip('tt7')">handleChangeLayer</a></td><td class=SDescription>Event handler for the map’s changelayer event. </td></tr></table></div></div><!--END_ND_SUMMARY--></div></div></div>
16 <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.RootContainer.Properties"></a>Properties</h3></div></div>
18 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.RootContainer.displayInLayerSwitcher"></a>displayInLayerSwitcher</h3><div class=CBody><p>Set to false for this layer type</p></div></div></div>
20 <div class="CProperty"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.RootContainer.layers"></a>layers</h3><div class=CBody><p>Layers that are attached to this container. Required config option.</p></div></div></div>
22 <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.RootContainer.Constructor"></a>Constructor</h3></div></div>
24 <div class="CConstructor"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.RootContainer.OpenLayers.Layer.Vector.RootContainer"></a>OpenLayers.<wbr>Layer.<wbr>Vector.<wbr>RootContainer</h3><div class=CBody><p>Create a new root container for multiple vector layer. This constructor is not supposed to be used from user space, it is only to be used by controls that need feature selection across multiple vector layers.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>name</td><td class=CDLDescription>{String} A name for the layer</td></tr><tr><td class=CDLEntry>options</td><td class=CDLDescription>{Object} Optional object with non-default properties to set on the layer.</td></tr></table><h4 class=CHeading>Required options properties</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>layers</td><td class=CDLDescription>{Array(<a href="../Vector-js.html#OpenLayers.Layer.Vector" class=LClass id=link9 onMouseOver="ShowTip(event, 'tt8', 'link9')" onMouseOut="HideTip('tt8')">OpenLayers.Layer.Vector</a>)} The layers managed by this container</td></tr></table><h4 class=CHeading>Returns</h4><p>{<a href="#OpenLayers.Layer.Vector.RootContainer.OpenLayers.Layer.Vector.RootContainer" class=LConstructor id=link10 onMouseOver="ShowTip(event, 'tt9', 'link10')" onMouseOut="HideTip('tt9')">OpenLayers.Layer.Vector.RootContainer</a>} A new vector layer root container</p></div></div></div>
26 <div class="CGroup"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.RootContainer.Functions"></a>Functions</h3></div></div>
28 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.RootContainer.display"></a>display</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>display: function()</td></tr></table></blockquote></div></div></div>
30 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.RootContainer.getFeatureFromEvent"></a>getFeatureFromEvent</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>getFeatureFromEvent: function(</td><td class=PParameter nowrap>evt</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>walk through the layers to find the feature returned by the event</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>evt</td><td class=CDLDescription>{Object} event object with a feature property</td></tr></table><h4 class=CHeading>Returns</h4><p>{<a href="../../Feature/Vector-js.html#OpenLayers.Feature.Vector" class=LClass id=link11 onMouseOver="ShowTip(event, 'tt10', 'link11')" onMouseOut="HideTip('tt10')">OpenLayers.Feature.Vector</a>}</p></div></div></div>
32 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.RootContainer.setMap"></a>setMap</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>setMap: function(</td><td class=PParameter nowrap>map</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>map</td><td class=CDLDescription>{<a href="../../Map-js.html#OpenLayers.Map" class=LClass id=link12 onMouseOver="ShowTip(event, 'tt11', 'link12')" onMouseOut="HideTip('tt11')">OpenLayers.Map</a>}</td></tr></table></div></div></div>
34 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.RootContainer.removeMap"></a>removeMap</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>removeMap: function(</td><td class=PParameter nowrap>map</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>map</td><td class=CDLDescription>{<a href="../../Map-js.html#OpenLayers.Map" class=LClass id=link13 onMouseOver="ShowTip(event, 'tt11', 'link13')" onMouseOut="HideTip('tt11')">OpenLayers.Map</a>}</td></tr></table></div></div></div>
36 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.RootContainer.collectRoots"></a>collectRoots</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>collectRoots: function()</td></tr></table></blockquote><p>Collects the root nodes of all layers this control is configured with and moveswien the nodes to this control’s layer</p></div></div></div>
38 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.RootContainer.resetRoots"></a>resetRoots</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td>resetRoots: function()</td></tr></table></blockquote><p>Resets the root nodes back into the layers they belong to.</p></div></div></div>
40 <div class="CFunction"><div class=CTopic><h3 class=CTitle><a name="OpenLayers.Layer.Vector.RootContainer.handleChangeLayer"></a>handleChangeLayer</h3><div class=CBody><blockquote><table border=0 cellspacing=0 cellpadding=0 class=Prototype><tr><td><table border=0 cellspacing=0 cellpadding=0><tr><td class=PBeforeParameters nowrap>handleChangeLayer: function(</td><td class=PParameter nowrap>evt</td><td class=PAfterParameters nowrap>)</td></tr></table></td></tr></table></blockquote><p>Event handler for the map’s changelayer event. We need to rebuild this container’s layer dom if order of one of its layers changes. This handler is added with the setMap method, and removed with the removeMap method.</p><h4 class=CHeading>Parameters</h4><table border=0 cellspacing=0 cellpadding=0 class=CDescriptionList><tr><td class=CDLEntry>evt</td><td class=CDLDescription>{Object}</td></tr></table></div></div></div>
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