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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>CollectionList.js</h2>
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<h4>Summary</h4>
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No overview generated for 'CollectionList.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="CollectionList.html">CollectionList</a></b></td>
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<td> </td>
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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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Author: Cameron Shorter cameronAtshorter.net
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License: LGPL as per: http://www.gnu.org/copyleft/lesser.html
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$Id: CollectionList.js 3888 2008-02-27 18:25:45Z ahocevar $
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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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* A widget to display a list of context docs to pick from. This is a view of
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* a Context Collection as specified in the OGC Context specification.
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* The default xsl stylesheet for this widget also uses the switchMap
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* function, which allows to switch to a different map context.
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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">@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> CollectionList(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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* Switch to another map context, keeping the current extent.
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* <span class="attrib">@param</span> objRef this widget
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* <span class="attrib">@modelUrl</span> the URL of the context we want to switch to.
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*/</span>
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<span class="reserved">this</span>.switchMap = <span class="reserved">function</span>(objRef, modelUrl) {
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<span class="comment"> // save the current extent</span>
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objRef.extent = objRef.targetModel.map.getExtent();
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objRef.srs = objRef.targetModel.getSRS();
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objRef.scale = objRef.targetModel.map.getScale();
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objRef.targetModel.addListener( <span class="literal">"loadModel"</span>, objRef.setExtent, objRef );
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config.loadModel( objRef.targetModel.id, modelUrl );
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}
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<span class="comment">/**
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* Sets the extent of the map that we just switched to.
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* Called when the map is reloaded with the new context.
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* <span class="attrib">@param</span> objRef this widget
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*/</span>
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<span class="reserved">this</span>.setExtent = <span class="reserved">function</span> (objRef) {
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objRef.targetModel.removeListener( <span class="literal">"loadModel"</span>, objRef.setExtent, objRef );
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var bbox = objRef.extent.toBBOX().split(/,/);
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<span class="reserved">if</span> (objRef.targetModel.getSRS().toUpperCase() != objRef.srs.toUpperCase()) {
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var targetProj = new OpenLayers.Projection(objRef.targetModel.getSRS());
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var srcProj = new OpenLayers.Projection(objRef.srs);
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var ptLL=new OpenLayers.Geometry.Point(bbox[0],bbox[1]);
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var ptUR=new OpenLayers.Geometry.Point(bbox[2],bbox[3]);
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ptLL.transform(srcProj, targetProj);
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ptUR.transform(srcProj, targetProj);
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objRef.extent = new OpenLayers.Bounds(ptLL.x, ptLL.y, ptUR.x, ptUR.y);
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}
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<span class="reserved">if</span> (objRef.targetModel.map.getExtent().containsBounds(objRef.extent, false, false)) {
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objRef.targetModel.map.zoomToExtent(objRef.extent);
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<span class="reserved">if</span> (!objRef.targetModel.map.fractionalZoom && objRef.targetModel.map.getScale() > objRef.scale) {
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objRef.targetModel.map.zoomIn();
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}
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}
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}
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}
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</pre>
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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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<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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