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<title>
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<a href='http://mapbuilder.sourceforge.net'>Community Map Builder</a> 27 Apr 2008 Overview
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<b><a href='http://mapbuilder.sourceforge.net'>Community Map Builder</a> 27 Apr 2008</b></em>
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<center>
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<h2>LayerControl.js</h2>
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</center>
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<h4>Summary</h4>
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<p>
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No overview generated for 'LayerControl.js'<BR/><BR/>
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<td colspan=2><font size="+2">
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<b>Class Summary</b>
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</font></td>
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</tr>
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<tr bgcolor="white" class="TableRowColor">
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<td width="15%"><b><a href="LayerControl.html">LayerControl</a></b></td>
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<td> </td>
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</tr>
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</table>
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<hr/>
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<!-- ========== METHOD SUMMARY =========== -->
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<!-- ========== END METHOD SUMMARY =========== -->
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<pre class="sourceview"><span class="comment">/*
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License: GPL as per: http://www.gnu.org/copyleft/gpl.html
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$Id: LayerControl.js 3607 2007-11-16 05:06:51Z rdewit $
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*/</span>
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<span class="comment">
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// Ensure this object's dependancies are loaded.</span>
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mapbuilder.loadScript(baseDir+<span class="literal">"/widget/WidgetBaseXSL.js"</span>);
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<span class="comment">/**
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* Widget to allow control of layer odering, visibility, deletion
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* <span class="attrib">@constructor</span>
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* <span class="attrib">@base</span> WidgetBaseXSL
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* <span class="attrib">@author</span> adair
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* <span class="attrib">@param</span> widgetNode The widget's XML object node from the configuration document.
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* <span class="attrib">@param</span> model The model object that this widget belongs to.
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*/</span>
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<span class="reserved">function</span> LayerControl(widgetNode, model) {
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WidgetBaseXSL.apply(<span class="reserved">this</span>,new Array(widgetNode, model));
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<span class="comment">/**
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* Override of widget prepaint to set some stylesheet parameters including
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* featureName (for OWS Context) and hidden attribute.
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* <span class="attrib">@param</span> objRef Pointer to this object.
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*/</span>
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<span class="reserved">this</span>.prePaint = <span class="reserved">function</span>(objRef) {
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<span class="reserved">if</span> (objRef.model.featureName) {
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objRef.stylesheet.setParameter(<span class="literal">"featureName"</span>, objRef.model.featureName );
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objRef.stylesheet.setParameter(<span class="literal">"hidden"</span>, objRef.model.getHidden(objRef.model.featureName).toString() );
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}
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}
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<span class="comment">/**
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* Displays a layer in a preview pane when mouse is over the table row
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* <span class="attrib">@param</span> layerId the name of the layer to highlight
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*/</span>
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<span class="reserved">this</span>.highlightLayer = <span class="reserved">function</span>(layerId) {
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var layer = <span class="reserved">this</span>.model.map.mbMapPane.oLlayers[layerId].div;
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var previewImage = document.getElementById(<span class="literal">"previewImage"</span>);
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try {
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<span class="reserved">if</span> (previewImage && layer) previewImage.src = layer.firstChild.firstChild.src;
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} catch(e) {}
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}
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<span class="comment">/**
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* Listener method to paint this widget
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* <span class="attrib">@param</span> layerName the name of the layer to highlight
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*/</span>
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<span class="reserved">this</span>.refresh = <span class="reserved">function</span>(objRef, layerName) {
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objRef.paint(objRef, objRef.id);
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}
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<span class="reserved">this</span>.foldUnfoldGroup = <span class="reserved">function</span>(groupName,id) {
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<span class="comment"> // context config stuff to maintain group folding over refresh</span>
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var xpathExpression = <span class="literal">"//wmc:General/wmc:Extension/wmc:GroupList/wmc:Group[@name='"</span> + groupName + <span class="literal">"']"</span>;
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<span class="comment"> //var thisGroupsLayerNodes = model.doc.selectNodes(xpathExpression);</span>
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var thisGroupsNode = model.doc.selectSingleNode(xpathExpression);
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var thisGroupsFoldedState = thisGroupsNode.getAttribute(<span class="literal">'folded'</span>);
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var e =document.getElementById(id);
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<span class="reserved">if</span>(thisGroupsFoldedState == <span class="literal">"1"</span>) {
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thisGroupsNode.setAttribute(<span class="literal">"folded"</span>, <span class="literal">"0"</span>);
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e.value=<span class="literal">"-"</span>;
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} <span class="reserved">else</span> {
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thisGroupsNode.setAttribute(<span class="literal">"folded"</span>, <span class="literal">"1"</span>);
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e.value=<span class="literal">"+"</span>;
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}
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}
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<span class="comment">/**
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* not working yet
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* <span class="attrib">@param</span> layerId the name of the layer to highlight
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*/</span>
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<span class="reserved">this</span>.showLayerMetadata = <span class="reserved">function</span>(layerId) {
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var metadataWidget = config.objects.layerMetadata;
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<span class="reserved">if</span> (metadataWidget) {
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metadataWidget.stylesheet.setParameter(<span class="literal">"featureName"</span>,layerId);
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metadataWidget.node = document.getElementById(metadataWidget.htmlTagId);
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metadataWidget.paint(metadataWidget);
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}
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}
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<span class="comment">/**
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* Change image source from imageA to imageB
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* <span class="attrib">@param</span> id id of image tag where we want to change the source
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* <span class="attrib">@param</span> imageA url of imageA
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* <span class="attrib">@param</span> imageB url of imageB
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*/</span>
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<span class="reserved">this</span>.ChangeImage= <span class="reserved">function</span> (id, imageA, imageB) {
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var indexA=document.getElementById(id).src.indexOf(imageA);
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var indexB=document.getElementById(id).src.indexOf(imageB);
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<span class="reserved">if</span> (document.getElementById(id) != null) {
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<span class="reserved">if</span> (indexA != -1) { <span class="comment">/* HACK for IE. */</span>
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document.getElementById(id).src=document.getElementById(id).src.substring(0,indexA)+imageB;
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} <span class="reserved">else</span> {
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document.getElementById(id).src=document.getElementById(id).src.substring(0,indexB)+imageA;
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}
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}
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<span class="reserved">return</span>;
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}
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<span class="comment">/**
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* Display or fold the layer's legend
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* <span class="attrib">@param</span> id id of legend div
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*/</span>
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<span class="reserved">this</span>.switchVisibilityById = <span class="reserved">function</span> (id) {
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e =document.getElementById(id);
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<span class="reserved">if</span> (e.style.display==<span class="literal">"none"</span>) {
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e.style.display = <span class="literal">"block"</span>;
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} <span class="reserved">else</span> {
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e.style.display = <span class="literal">"none"</span>;
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}
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}
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<span class="reserved">this</span>.model.addListener(<span class="literal">"deleteLayer"</span>,<span class="reserved">this</span>.refresh, <span class="reserved">this</span>);
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<span class="reserved">this</span>.model.addListener(<span class="literal">"moveLayerUp"</span>,<span class="reserved">this</span>.refresh, <span class="reserved">this</span>);
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<span class="reserved">this</span>.model.addListener(<span class="literal">"moveLayerDown"</span>,<span class="reserved">this</span>.refresh, <span class="reserved">this</span>);
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<span class="reserved">if</span> (<span class="reserved">this</span>.autoRefresh) <span class="reserved">this</span>.model.addListener(<span class="literal">"addLayer"</span>,<span class="reserved">this</span>.refresh, <span class="reserved">this</span>);
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}
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</pre>
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<hr>
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<td bgcolor="#EEEEFF" class="NavBarCell1"> <a href="overview-summary.html"><font class="NavBarFont1"><b>Overview</b></font></a> </td>
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<td bgcolor="#EEEEFF" align="right" valign="top"><em>
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<b><a href='http://mapbuilder.sourceforge.net'>Community Map Builder</a> 27 Apr 2008</b></em>
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<script>
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<!--
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document.writeln('<A HREF="allclasses-noframe.html" TARGET=""><B>All Classes</B></A>');
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<a href="allclasses-noframe.html" target=""><b>All Classes</b></a>
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<div class="jsdoc_ctime">Documentation generated by <a href="http://jsdoc.sourceforge.net/" target="_parent">JSDoc</a> on Sun Apr 27 20:30:54 2008</div>
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