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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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<h2>Context.js</h2>
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<h4>Summary</h4>
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No overview generated for 'Context.js'<BR/><BR/>
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<b>Class Summary</b>
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<tr bgcolor="white" class="TableRowColor">
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<td width="15%"><b><a href="Context.html">Context</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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License: LGPL as per: http://www.gnu.org/copyleft/lesser.html
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$Id: Context.js 3887 2008-02-27 18:18:53Z 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">"/model/ModelBase.js"</span>);
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<span class="comment">/**
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* Stores a Web Map Context (WMC) document as defined by the Open Geospatial Consortium
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* (http://www.opengeospatial.org/) and extensions the the WMC.
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*
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* Listeners supported by this model:
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* "refresh" called when window parameters (width/height, bbox) are changed
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* "hidden" called when visibilty of a layer is changed
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*
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* <span class="attrib">@constructor</span>
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* <span class="attrib">@base</span> ModelBase
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* <span class="attrib">@author</span> Cameron Shorter
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* <span class="attrib">@param</span> modelNode Pointer to the xml node for this model from the config file.
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* <span class="attrib">@param</span> parent The parent model for the object.
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*
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*/</span>
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<span class="reserved">function</span> Context(modelNode, parent) {
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<span class="comment"> // Inherit the ModelBase functions and parameters</span>
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ModelBase.apply(<span class="reserved">this</span>, new Array(modelNode, parent));
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<span class="reserved">this</span>.namespace = <span class="literal">"xmlns:mb='http://mapbuilder.sourceforge.net/mapbuilder' xmlns:wmc='http://www.opengis.net/context' xmlns:xsl='http://www.w3.org/1999/XSL/Transform'"</span>;
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<span class="comment">/**
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* Change a Layer's visibility.
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* <span class="attrib">@param</span> layerId The name of the layer that is to be changed
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* <span class="attrib">@param</span> hidden String with the value to be set; 1=hidden, 0=visible.
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*/</span>
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<span class="reserved">this</span>.setHidden=<span class="reserved">function</span>(layerId, hidden){
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<span class="comment"> // Set the hidden attribute in the Context</span>
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var hiddenValue = <span class="literal">"0"</span>;
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<span class="reserved">if</span> (hidden) hiddenValue = <span class="literal">"1"</span>;
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var layer = <span class="reserved">this</span>.getLayer(layerId);
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<span class="reserved">if</span> (layer) layer.setAttribute(<span class="literal">"hidden"</span>, hiddenValue);
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<span class="comment"> // Call the listeners</span>
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<span class="reserved">this</span>.callListeners(<span class="literal">"hidden"</span>, layerId);
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}
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<span class="comment">/**
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* Get the layer's visiblity attribute value.
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* <span class="attrib">@param</span> layerId The name of the layer that is to be changed
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* <span class="attrib">@return</span> hidden String with the value; 1=hidden, 0=visible.
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*/</span>
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<span class="reserved">this</span>.getHidden=<span class="reserved">function</span>(layerId){
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var hidden=1;
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var layer = <span class="reserved">this</span>.getLayer(layerId);
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<span class="reserved">if</span> (layer) hidden = layer.getAttribute(<span class="literal">"hidden"</span>);
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<span class="reserved">return</span> hidden;
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}
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<span class="comment">/**
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* Get the BoundingBox value from the Context document.
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* <span class="attrib">@return</span> BoundingBox array with the sequence (xmin,ymin,xmax,ymax).
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*/</span>
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<span class="reserved">this</span>.getBoundingBox=<span class="reserved">function</span>() {
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var bbox = new Array();
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<span class="comment"> // Extract BoundingBox from the context</span>
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var boundingBox=<span class="reserved">this</span>.doc.selectSingleNode(<span class="literal">"/wmc:ViewContext/wmc:General/wmc:BoundingBox"</span>);
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bbox[0]=parseFloat(boundingBox.getAttribute(<span class="literal">"minx"</span>));
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bbox[1]=parseFloat(boundingBox.getAttribute(<span class="literal">"miny"</span>));
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bbox[2]=parseFloat(boundingBox.getAttribute(<span class="literal">"maxx"</span>));
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bbox[3]=parseFloat(boundingBox.getAttribute(<span class="literal">"maxy"</span>));
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<span class="reserved">return</span> bbox;
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}
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<span class="comment">/**
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* Set the BoundingBox element and call the refresh listeners
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* <span class="attrib">@param</span> boundingBox array in the sequence (xmin, ymin, xmax, ymax).
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*/</span>
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<span class="reserved">this</span>.setBoundingBox=<span class="reserved">function</span>(boundingBox) {
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<span class="comment"> // Set BoundingBox in context</span>
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var bbox=<span class="reserved">this</span>.doc.selectSingleNode(<span class="literal">"/wmc:ViewContext/wmc:General/wmc:BoundingBox"</span>);
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bbox.setAttribute(<span class="literal">"minx"</span>, boundingBox[0]);
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bbox.setAttribute(<span class="literal">"miny"</span>, boundingBox[1]);
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bbox.setAttribute(<span class="literal">"maxx"</span>, boundingBox[2]);
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bbox.setAttribute(<span class="literal">"maxy"</span>, boundingBox[3]);
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<span class="comment"> // Call the listeners</span>
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<span class="reserved">this</span>.callListeners(<span class="literal">"bbox"</span>, boundingBox);
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}
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<span class="comment">/**
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* Set the BoundingBox element and call the refresh listeners
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* <span class="attrib">@param</span> boundingBox array in the sequence (xmin, ymin, xmax, ymax).
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*/</span>
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<span class="reserved">this</span>.initBbox=<span class="reserved">function</span>(objRef) {
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<span class="comment"> // Set BoundingBox in context from URL CGI params</span>
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<span class="reserved">if</span> (window.cgiArgs[<span class="literal">"bbox"</span>]) { //set as minx,miny,maxx,maxy
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var bbox = window.cgiArgs[<span class="literal">"bbox"</span>].split(<span class="literal">','</span>);
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objRef.setBoundingBox(bbox);
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}
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}
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<span class="reserved">this</span>.addListener( <span class="literal">"loadModel"</span>, <span class="reserved">this</span>.initBbox, <span class="reserved">this</span> );
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<span class="comment"> //this.addListener( "contextLoaded", this.initBbox, this );</span>
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<span class="comment">/**
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* Set the aoi param and call the refresh listeners
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* <span class="attrib">@param</span> boundingBox array in the sequence (xmin, ymin, xmax, ymax).
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*/</span>
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<span class="reserved">this</span>.initAoi=<span class="reserved">function</span>(objRef) {
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<span class="comment"> // Set AOI of context from URL CGI params</span>
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<span class="reserved">if</span> (window.cgiArgs[<span class="literal">"aoi"</span>]) { //set as ul,lr point arrays
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var aoi = window.cgiArgs[<span class="literal">"aoi"</span>].split(<span class="literal">','</span>);
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objRef.setParam(<span class="literal">"aoi"</span>,new Array(new Array(aoi[0],aoi[3]),new Array(aoi[2],aoi[1])));
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}
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}
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<span class="reserved">this</span>.addListener( <span class="literal">"loadModel"</span>, <span class="reserved">this</span>.initAoi, <span class="reserved">this</span> );
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<span class="comment"> //MA this.addListener( "contextLoaded", this.initAoi, this );</span>
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<span class="comment">/**
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* Set the Spatial Reference System for the context document.
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* <span class="attrib">@param</span> srs The Spatial Reference System.
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*/</span>
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<span class="reserved">this</span>.setSRS=<span class="reserved">function</span>(srs) {
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var bbox=<span class="reserved">this</span>.doc.selectSingleNode(<span class="literal">"/wmc:ViewContext/wmc:General/wmc:BoundingBox"</span>);
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bbox.setAttribute(<span class="literal">"SRS"</span>,srs);
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<span class="reserved">this</span>.callListeners(<span class="literal">"srs"</span>);
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}
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<span class="comment">/**
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* Get the Spatial Reference System from the context document.
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* <span class="attrib">@return</span> srs The Spatial Reference System.
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*/</span>
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<span class="reserved">this</span>.getSRS=<span class="reserved">function</span>() {
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var bbox=<span class="reserved">this</span>.doc.selectSingleNode(<span class="literal">"/wmc:ViewContext/wmc:General/wmc:BoundingBox"</span>);
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srs=bbox.getAttribute(<span class="literal">"SRS"</span>);
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srs = srs ? srs : <span class="literal">'EPSG:4326'</span>;
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<span class="reserved">return</span> srs;
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}
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<span class="comment">/**
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* Get the Projection object from the context document.
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* <span class="attrib">@return</span> Proj Object of The Spatial Reference System.
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*/</span>
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<span class="reserved">this</span>.initProj=<span class="reserved">function</span>(objRef) {
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objRef.proj=new OpenLayers.Projection(objRef.getSRS());
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}
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<span class="reserved">this</span>.addFirstListener( <span class="literal">"loadModel"</span>, <span class="reserved">this</span>.initProj, <span class="reserved">this</span> );
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<span class="comment">/**
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* Get the Window width.
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* <span class="attrib">@return</span> width The width of map window from the context document
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*/</span>
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<span class="reserved">this</span>.getWindowWidth=<span class="reserved">function</span>() {
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var win=<span class="reserved">this</span>.doc.selectSingleNode(<span class="literal">"/wmc:ViewContext/wmc:General/wmc:Window"</span>);
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<span class="reserved">return</span> win.getAttribute(<span class="literal">"width"</span>);
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}
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<span class="comment">/**
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* Set the Window width.
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* <span class="attrib">@param</span> width The width of map window to set in the context document
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*/</span>
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<span class="reserved">this</span>.setWindowWidth=<span class="reserved">function</span>(width) {
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var win=<span class="reserved">this</span>.doc.selectSingleNode(<span class="literal">"/wmc:ViewContext/wmc:General/wmc:Window"</span>);
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win.setAttribute(<span class="literal">"width"</span>, width);
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<span class="reserved">this</span>.callListeners(<span class="literal">"resize"</span>);
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}
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<span class="comment">/**
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* Get the Window height.
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* <span class="attrib">@return</span> height The height of map window from the context document.
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*/</span>
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<span class="reserved">this</span>.getWindowHeight=<span class="reserved">function</span>() {
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var win=<span class="reserved">this</span>.doc.selectSingleNode(<span class="literal">"/wmc:ViewContext/wmc:General/wmc:Window"</span>);
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<span class="reserved">return</span> win.getAttribute(<span class="literal">"height"</span>);
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}
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<span class="comment">/**
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* Set the Window height.
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* <span class="attrib">@param</span> height The height of map window to set in the context document
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*/</span>
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<span class="reserved">this</span>.setWindowHeight=<span class="reserved">function</span>(height) {
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var win=<span class="reserved">this</span>.doc.selectSingleNode(<span class="literal">"/wmc:ViewContext/wmc:General/wmc:Window"</span>);
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win.setAttribute(<span class="literal">"height"</span>, height);
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<span class="reserved">this</span>.callListeners(<span class="literal">"resize"</span>);
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}
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<span class="comment">/**
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* Returns the width/height of the map window as an array
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*/</span>
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<span class="reserved">this</span>.getWindowSize=<span class="reserved">function</span>() {
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var win=<span class="reserved">this</span>.doc.selectSingleNode(<span class="literal">"/wmc:ViewContext/wmc:General/wmc:Window"</span>);
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<span class="reserved">return</span> new Array(win.getAttribute(<span class="literal">"width"</span>), win.getAttribute(<span class="literal">"height"</span>));
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}
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<span class="comment">/**
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* Set the Window width and height in one function call to avoid a resize event in between
|
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* setting width and height, because that causes checkBbox to be triggered, which adjusts the
|
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* bbox then when it should not yet be adjusted.
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* Added by VTS for dynamic map window resizing (AutoResize tool)
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* <span class="attrib">@param</span> size Size of the map window as (width, height) array
|
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*/</span>
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<span class="reserved">this</span>.setWindowSize=<span class="reserved">function</span>(size) {
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var width = size[0];
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var height = size[1];
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var win=<span class="reserved">this</span>.doc.selectSingleNode(<span class="literal">"/wmc:ViewContext/wmc:General/wmc:Window"</span>);
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win.setAttribute(<span class="literal">"width"</span>, width);
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win.setAttribute(<span class="literal">"height"</span>, height);
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<span class="reserved">this</span>.callListeners(<span class="literal">"resize"</span>);
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}
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<span class="comment">/**
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* Returns the Layer node with the specified name from the list of nodes
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* selected by the nodeSelectXpath from the capabilities doc.
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* <span class="attrib">@param</span> featureName name of the featureType to look up
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* <span class="attrib">@return</span> the Layer node with the specified name.
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*/</span>
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<span class="reserved">this</span>.getFeatureNode = <span class="reserved">function</span>(featureName) {
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<span class="reserved">return</span> <span class="reserved">this</span>.doc.selectSingleNode(<span class="reserved">this</span>.nodeSelectXpath+<span class="literal">"[wmc:Name='"</span>+featureName+<span class="literal">"']"</span>);
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}
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<span class="comment">/**
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* Returns the serverUrl for the layer passed in as the feature argument.
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* <span class="attrib">@param</span> requestName ignored for context docs (only GetMap supported)
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* <span class="attrib">@param</span> method ignored for context docs (only GET supported)
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* <span class="attrib">@param</span> feature the Layer node from the context doc
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* <span class="attrib">@return</span> URL for the GetMap request
|
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*/</span>
|
335
|
<span class="reserved">this</span>.getServerUrl = <span class="reserved">function</span>(requestName, method, feature) {
|
336
|
<span class="reserved">return</span> feature.selectSingleNode(<span class="literal">"wmc:Server/wmc:OnlineResource"</span>).getAttribute(<span class="literal">"xlink:href"</span>);
|
337
|
}
|
338
|
|
339
|
<span class="comment">/**
|
340
|
* Returns the WMS version for the layer passed in as the feature argument
|
341
|
* <span class="attrib">@param</span> feature the Layer node from the context doc
|
342
|
* <span class="attrib">@return</span> the WMS GetMap version for the Layer.
|
343
|
*/</span>
|
344
|
<span class="reserved">this</span>.getVersion = <span class="reserved">function</span>(feature) {
|
345
|
<span class="reserved">return</span> feature.selectSingleNode(<span class="literal">"wmc:Server"</span>).getAttribute(<span class="literal">"version"</span>);
|
346
|
}
|
347
|
|
348
|
<span class="comment">/**
|
349
|
* Get HTTP method for the specified feature
|
350
|
* <span class="attrib">@param</span> feature the Layer node from the context doc
|
351
|
* <span class="attrib">@return</span> the HTTP method to get the feature with
|
352
|
*/</span>
|
353
|
<span class="reserved">this</span>.getMethod = <span class="reserved">function</span>(feature) {
|
354
|
<span class="reserved">return</span> feature.selectSingleNode(<span class="literal">"wmc:Server/wmc:OnlineResource"</span>).getAttribute(<span class="literal">"wmc:method"</span>);
|
355
|
}
|
356
|
|
357
|
<span class="comment">/**
|
358
|
* Method to get a list of queryable layers
|
359
|
* <span class="attrib">@return</span> the list with queryable layers
|
360
|
*/</span>
|
361
|
<span class="reserved">this</span>.getQueryableLayers = <span class="reserved">function</span>() {
|
362
|
var listNodeArray = <span class="reserved">this</span>.doc.selectNodes(<span class="literal">"/wmc:ViewContext/wmc:LayerList/wmc:Layer[attribute::queryable='1']"</span>);
|
363
|
<span class="reserved">return</span> listNodeArray;
|
364
|
}
|
365
|
|
366
|
<span class="comment">/**
|
367
|
* Method to get a list of all layers in the context doc
|
368
|
* TBD: merge this with above, passing queryable as an optional boolean param?
|
369
|
* <span class="attrib">@return</span> the list with all layers
|
370
|
*/</span>
|
371
|
<span class="reserved">this</span>.getAllLayers = <span class="reserved">function</span>() {
|
372
|
var listNodeArray = <span class="reserved">this</span>.doc.selectNodes(<span class="literal">"/wmc:ViewContext/wmc:LayerList/wmc:Layer"</span>);
|
373
|
<span class="reserved">return</span> listNodeArray;
|
374
|
}
|
375
|
|
376
|
<span class="comment">/**
|
377
|
* Method to get a layer with the specified name in the context doc
|
378
|
* <span class="attrib">@param</span> layerId the id of the layer to be returned
|
379
|
* <span class="attrib">@return</span> the list with all layers
|
380
|
*/</span>
|
381
|
<span class="reserved">this</span>.getLayer = <span class="reserved">function</span>(layerId) {
|
382
|
var layer = <span class="reserved">this</span>.doc.selectSingleNode(<span class="literal">"/wmc:ViewContext/wmc:LayerList/wmc:Layer[@id='"</span>+layerId+<span class="literal">"']"</span>);
|
383
|
<span class="reserved">if</span> (layer == null) {
|
384
|
layer = <span class="reserved">this</span>.doc.selectSingleNode(<span class="literal">"/wmc:ViewContext/wmc:LayerList/wmc:Layer[wmc:Name='"</span>+layerId+<span class="literal">"']"</span>);
|
385
|
}
|
386
|
<span class="comment"> //TBD: add in time stamp</span>
|
387
|
<span class="reserved">return</span> layer;
|
388
|
}
|
389
|
|
390
|
<span class="comment">/**
|
391
|
* Method to get a layer id with the specified id/name in the context doc
|
392
|
* <span class="attrib">@param</span> layerName the name of the layer of which the id is to be returned
|
393
|
* <span class="attrib">@return</span> the id of the layer || false
|
394
|
*/</span>
|
395
|
<span class="reserved">this</span>.getLayerIdByName = <span class="reserved">function</span>(layerName) {
|
396
|
var layer = <span class="reserved">this</span>.getLayer(layerName);
|
397
|
var id;
|
398
|
<span class="reserved">if</span> (layer) {
|
399
|
id = layer.getAttribute(<span class="literal">"id"</span>);
|
400
|
}
|
401
|
|
402
|
<span class="reserved">return</span> id || false;
|
403
|
}
|
404
|
|
405
|
<span class="comment">/**
|
406
|
* Method to add a Layer to the LayerList
|
407
|
* <span class="attrib">@param</span> layerNode the Layer node from another context doc or capabiltiies doc
|
408
|
*/</span>
|
409
|
<span class="reserved">this</span>.addLayer = <span class="reserved">function</span>(objRef, layerNode) {
|
410
|
|
411
|
var parentNode = objRef.doc.selectSingleNode(<span class="literal">"/wmc:ViewContext/wmc:LayerList"</span>);
|
412
|
parentNode.appendChild(layerNode);
|
413
|
<span class="comment">
|
414
|
// Generate layer id if layer doesn't have an id</span>
|
415
|
<span class="reserved">if</span> (!layerNode.getAttribute(<span class="literal">"id"</span>)) {
|
416
|
var randomNumber = Math.round(10000 * Math.random());
|
417
|
id = Mapbuilder.getProperty(layerNode, <span class="literal">"wmc:Name"</span>) + <span class="literal">"_"</span> + randomNumber;
|
418
|
layerNode.setAttribute(<span class="literal">"id"</span>, id);
|
419
|
}
|
420
|
|
421
|
objRef.modified = true;
|
422
|
<span class="comment"> //objRef.callListeners("refresh");</span>
|
423
|
}
|
424
|
<span class="reserved">this</span>.addFirstListener( <span class="literal">"addLayer"</span>, <span class="reserved">this</span>.addLayer, <span class="reserved">this</span> );
|
425
|
|
426
|
<span class="comment">/**
|
427
|
* Method to add a Sld tag to the StyleList
|
428
|
* <span class="attrib">@param</span> layerName the Layer name from another context doc or capabiltiies doc
|
429
|
*/</span>
|
430
|
<span class="reserved">this</span>.addSLD = <span class="reserved">function</span>(objRef,sldNode) {
|
431
|
<span class="comment"> // alert("context addSLD : "+objRef.id);</span>
|
432
|
var layerName=Mapbuilder.getProperty(sldNode, <span class="literal">"//Name"</span>);
|
433
|
var parentNode = objRef.doc.selectSingleNode(<span class="literal">"//wmc:Layer[wmc:Name='"</span>+layerName+<span class="literal">"']"</span>);
|
434
|
parentNode.appendChild(sldNode.cloneNode(true));
|
435
|
objRef.modified = true;
|
436
|
var attribs=[];
|
437
|
attribs[<span class="literal">"sld_body"</span>]=(new XMLSerializer()).serializeToString(objRef.doc.selectSingleNode(<span class="literal">"//wmc:Layer[wmc:Name='"</span>+layerName+<span class="literal">"']/wmc:StyleList/wmc:Style/wmc:SLD/wmc:StyledLayerDescriptor"</span>));
|
438
|
objRef.map.mbMapPane.refreshLayer(objRef.map.mbMapPane,layerName,attribs);
|
439
|
|
440
|
}
|
441
|
<span class="reserved">this</span>.addFirstListener( <span class="literal">"addSLD"</span>, <span class="reserved">this</span>.addSLD, <span class="reserved">this</span> );
|
442
|
|
443
|
<span class="comment">/**
|
444
|
* Method to remove a Layer from the LayerList
|
445
|
* <span class="attrib">@param</span> layerId the Layer to be deleted
|
446
|
*/</span>
|
447
|
<span class="reserved">this</span>.deleteLayer = <span class="reserved">function</span>(objRef, layerId) {
|
448
|
var deletedNode = objRef.getLayer(layerId);
|
449
|
<span class="reserved">if</span> (!deletedNode) {
|
450
|
alert(mbGetMessage(<span class="literal">"nodeNotFound"</span>, layerId));
|
451
|
<span class="reserved">return</span>;
|
452
|
}
|
453
|
deletedNode.parentNode.removeChild(deletedNode);
|
454
|
objRef.modified = true;
|
455
|
}
|
456
|
<span class="reserved">this</span>.addFirstListener( <span class="literal">"deleteLayer"</span>, <span class="reserved">this</span>.deleteLayer, <span class="reserved">this</span> );
|
457
|
|
458
|
<span class="comment">/**
|
459
|
* Method to move a Layer in the LayerList up
|
460
|
* <span class="attrib">@param</span> layerId the layer to be moved
|
461
|
*/</span>
|
462
|
<span class="reserved">this</span>.moveLayerUp = <span class="reserved">function</span>(objRef, layerId) {
|
463
|
var movedNode = objRef.getLayer(layerId);
|
464
|
var sibNode = movedNode.selectSingleNode(<span class="literal">"following-sibling::*"</span>);
|
465
|
<span class="reserved">if</span> (!sibNode) {
|
466
|
alert(mbGetMessage(<span class="literal">"cantMoveUp"</span>, layerId));
|
467
|
<span class="reserved">return</span>;
|
468
|
}
|
469
|
movedNode.parentNode.insertBefore(sibNode,movedNode);
|
470
|
objRef.modified = true;
|
471
|
}
|
472
|
<span class="reserved">this</span>.addFirstListener( <span class="literal">"moveLayerUp"</span>, <span class="reserved">this</span>.moveLayerUp, <span class="reserved">this</span> );
|
473
|
|
474
|
<span class="comment">/**
|
475
|
* Method to move a Layer in the LayerList down
|
476
|
* <span class="attrib">@param</span> layerId the layer to be moved
|
477
|
*/</span>
|
478
|
<span class="reserved">this</span>.moveLayerDown = <span class="reserved">function</span>(objRef, layerId) {
|
479
|
var movedNode = objRef.getLayer(layerId);
|
480
|
var listNodeArray = movedNode.selectNodes(<span class="literal">"preceding-sibling::*"</span>); //preceding-sibling axis contains all previous siblings
|
481
|
var sibNode = listNodeArray[listNodeArray.length-1];
|
482
|
<span class="reserved">if</span> (!sibNode) {
|
483
|
alert(mbGetMessage(<span class="literal">"cantMoveDown"</span>, layerId));
|
484
|
<span class="reserved">return</span>;
|
485
|
}
|
486
|
movedNode.parentNode.insertBefore(movedNode,sibNode);
|
487
|
objRef.modified = true;
|
488
|
}
|
489
|
<span class="reserved">this</span>.addFirstListener( <span class="literal">"moveLayerDown"</span>, <span class="reserved">this</span>.moveLayerDown, <span class="reserved">this</span> );
|
490
|
|
491
|
<span class="comment">/**
|
492
|
* Adds a node to the Context document extension element. The extension element
|
493
|
* will be created if it doesn't already exist.
|
494
|
* <span class="attrib">@param</span> extensionNode the node to be appended in the extension element.
|
495
|
* <span class="attrib">@return</span> the ndoe added to the extension element
|
496
|
*/</span>
|
497
|
<span class="reserved">this</span>.setExtension = <span class="reserved">function</span>(extensionNode) {
|
498
|
var extension = <span class="reserved">this</span>.doc.selectSingleNode(<span class="literal">"/wmc:ViewContext/wmc:General/wmc:Extension"</span>);
|
499
|
<span class="reserved">if</span> (!extension) {
|
500
|
var general = <span class="reserved">this</span>.doc.selectSingleNode(<span class="literal">"/wmc:ViewContext/wmc:General"</span>);
|
501
|
var newChild = createElementWithNS(<span class="reserved">this</span>.doc,<span class="literal">"Extension"</span>,<span class="literal">'http://www.opengis.net/context'</span>);
|
502
|
extension = general.appendChild(newChild);
|
503
|
}
|
504
|
<span class="reserved">return</span> extension.appendChild(extensionNode);
|
505
|
}
|
506
|
|
507
|
<span class="comment">/**
|
508
|
* Returns the contents of the extension element
|
509
|
* <span class="attrib">@return</span> the contents of the extension element
|
510
|
*/</span>
|
511
|
<span class="reserved">this</span>.getExtension = <span class="reserved">function</span>() {
|
512
|
<span class="reserved">return</span> <span class="reserved">this</span>.doc.selectSingleNode(<span class="literal">"/wmc:ViewContext/wmc:General/wmc:Extension"</span>);
|
513
|
}
|
514
|
|
515
|
<span class="comment">/**
|
516
|
* Parses a Dimension element from the Context document as a loadModel listener.
|
517
|
* This results in an XML structure with one element for each GetMap time value
|
518
|
* parameter and added to the Context extrension element.
|
519
|
* <span class="attrib">@param</span> objRef a pointer to this object
|
520
|
*/</span>
|
521
|
<span class="reserved">this</span>.initTimeExtent = <span class="reserved">function</span>( objRef ) {
|
522
|
<span class="comment"> //only the first one selected is used as the timestamp source</span>
|
523
|
<span class="comment"> //var extentNode = objRef.doc.selectSingleNode("//wmc:Layer/wmc:Dimension[<span class="attrib">@name</span>='time']");</span>
|
524
|
<span class="comment"> //TBD: how to deal with multiple time dimensions in one context doc, or caps doc?</span>
|
525
|
var timeNodes = objRef.doc.selectNodes(<span class="literal">"//wmc:Dimension[@name='time']"</span>);
|
526
|
<span class="reserved">for</span> (var i=0; i<timeNodes.length; ++i) {
|
527
|
var extentNode = timeNodes[i];
|
528
|
objRef.timestampList = createElementWithNS(objRef.doc,<span class="literal">"TimestampList"</span>,mbNsUrl);
|
529
|
var layerId;
|
530
|
var layerNode = extentNode.parentNode.parentNode;
|
531
|
<span class="reserved">if</span> (layerNode.selectSingleNode(<span class="literal">"@id"</span>)) {
|
532
|
layerId = Mapbuilder.getProperty(layerNode, <span class="literal">"@id"</span>);
|
533
|
} <span class="reserved">else</span> {
|
534
|
layerId = Mapbuilder.getProperty(layerNode, <span class="literal">"wmc:Name"</span>);
|
535
|
}
|
536
|
objRef.timestampList.setAttribute(<span class="literal">"layerId"</span>, layerId);
|
537
|
<span class="comment"> //alert("found time dimension, extent:"+getNodeValue(extentNode));</span>
|
538
|
var times = getNodeValue(extentNode).split(<span class="literal">","</span>); //comma separated list of arguments
|
539
|
<span class="reserved">for</span> (var j=0; j<times.length; ++j) {
|
540
|
var params = times[j].split(<span class="literal">"/"</span>); // parses start/end/period
|
541
|
<span class="reserved">if</span> (params.length==3) {
|
542
|
var start = setISODate(params[0]);
|
543
|
var stop = setISODate(params[1]);
|
544
|
var period = params[2];
|
545
|
var parts = period.match(/^P((\d*)Y)?((\d*)M)?((\d*)D)?T?((\d*)H)?((\d*)M)?((.*)S)?/);
|
546
|
<span class="reserved">for</span> (var i=1; i<parts.length; ++i) {
|
547
|
<span class="reserved">if</span> (!parts[i]) parts[i]=0;
|
548
|
}
|
549
|
<span class="comment"> //alert("start time:"+start.toString());</span>
|
550
|
do {
|
551
|
var timestamp = createElementWithNS(objRef.doc,<span class="literal">"Timestamp"</span>,mbNsUrl);
|
552
|
timestamp.appendChild(objRef.doc.createTextNode(getISODate(start)));
|
553
|
objRef.timestampList.appendChild(timestamp);
|
554
|
|
555
|
start.setFullYear(start.getFullYear()+parseInt(parts[2],10));
|
556
|
start.setMonth(start.getMonth()+parseInt(parts[4],10));
|
557
|
start.setDate(start.getDate()+parseInt(parts[6],10));
|
558
|
start.setHours(start.getHours()+parseInt(parts[8],10));
|
559
|
start.setMinutes(start.getMinutes()+parseInt(parts[10],10));
|
560
|
start.setSeconds(start.getSeconds()+parseFloat(parts[12]));
|
561
|
<span class="comment"> //alert("time:"+start.toString());</span>
|
562
|
} <span class="reserved">while</span>(start.getTime() <= stop.getTime());
|
563
|
|
564
|
} <span class="reserved">else</span> {
|
565
|
<span class="comment"> //output single date value</span>
|
566
|
var timestamp = createElementWithNS(objRef.doc,<span class="literal">"Timestamp"</span>,mbNsUrl);
|
567
|
timestamp.appendChild(objRef.doc.createTextNode(times[j]));
|
568
|
objRef.timestampList.appendChild(timestamp);
|
569
|
}
|
570
|
}
|
571
|
objRef.setExtension(objRef.timestampList);
|
572
|
}
|
573
|
}
|
574
|
<span class="reserved">this</span>.addFirstListener( <span class="literal">"loadModel"</span>, <span class="reserved">this</span>.initTimeExtent, <span class="reserved">this</span> );
|
575
|
|
576
|
<span class="comment">/**
|
577
|
* clear the time extent created by initTimeExtent
|
578
|
* <span class="attrib">@param</span> objRef reference to this model
|
579
|
*/</span>
|
580
|
<span class="reserved">this</span>.clearTimeExtent = <span class="reserved">function</span>( objRef ) {
|
581
|
var tsList = objRef.timestampList;
|
582
|
<span class="reserved">if</span> (tsList) {
|
583
|
tsList.parentNode.removeChild(tsList);
|
584
|
}
|
585
|
}
|
586
|
<span class="reserved">this</span>.addListener(<span class="literal">"newModel"</span>, <span class="reserved">this</span>.clearTimeExtent, <span class="reserved">this</span>);
|
587
|
|
588
|
<span class="comment">/**
|
589
|
* Returns the current timestamp value.
|
590
|
* <span class="attrib">@param</span> layerId the name of the Layer from which the timestamp list was generated
|
591
|
* <span class="attrib">@return</span> the current timestamp value.
|
592
|
*/</span>
|
593
|
<span class="reserved">this</span>.getCurrentTimestamp = <span class="reserved">function</span>( layerId ) {
|
594
|
var index = <span class="reserved">this</span>.getParam(<span class="literal">"timestamp"</span>);
|
595
|
<span class="reserved">return</span> getNodeValue(<span class="reserved">this</span>.timestampList.childNodes[index]);
|
596
|
}
|
597
|
<span class="comment">
|
598
|
// PL -BRGM</span>
|
599
|
<span class="comment">/**
|
600
|
* Change a Layer's opacity
|
601
|
* <span class="attrib">@param</span> layerId The name of the layer that is to be changed
|
602
|
* <span class="attrib">@param</span> Opacity Value of the opacity
|
603
|
*/</span>
|
604
|
<span class="reserved">this</span>.setOpacity=<span class="reserved">function</span>(layerId, Opacity){
|
605
|
<span class="comment"> // Set the hidden attribute in the Context</span>
|
606
|
var layer = <span class="reserved">this</span>.getLayer(layerId);
|
607
|
<span class="reserved">if</span> (layer) layer.setAttribute(<span class="literal">"opacity"</span>, Opacity);
|
608
|
<span class="comment"> // Call the listeners</span>
|
609
|
<span class="reserved">this</span>.callListeners(<span class="literal">"opacity"</span>, layerId);
|
610
|
}
|
611
|
|
612
|
<span class="comment">/**
|
613
|
* Get the layer's opacity attribute value.
|
614
|
* <span class="attrib">@param</span> layerId The name of the layer that is to be changed
|
615
|
* <span class="attrib">@return</span> hidden String with the value; 1=hidden, 0=visible.
|
616
|
*/</span>
|
617
|
<span class="reserved">this</span>.getOpacity=<span class="reserved">function</span>(layerId){
|
618
|
var opacity=1;
|
619
|
var layer = <span class="reserved">this</span>.getLayer(layerId);
|
620
|
<span class="reserved">if</span> (layer) opacity = layer.getAttribute(<span class="literal">"opacity"</span>);
|
621
|
<span class="reserved">return</span> opacity;
|
622
|
}
|
623
|
<span class="comment"> // PL -END</span>
|
624
|
}
|
625
|
</pre>
|
626
|
<hr>
|
627
|
|
628
|
|
629
|
|
630
|
<!-- ========== START OF NAVBAR ========== -->
|
631
|
<a name="navbar_top"><!-- --></a>
|
632
|
<table border="0" width="100%" cellpadding="1" cellspacing="0">
|
633
|
<tr>
|
634
|
<td colspan=2 bgcolor="#EEEEFF" class="NavBarCell1">
|
635
|
<a name="navbar_top_firstrow"><!-- --></a>
|
636
|
<table border="0" cellpadding="0" cellspacing="3">
|
637
|
<tr align="center" valign="top">
|
638
|
|
639
|
|
640
|
<td bgcolor="#EEEEFF" class="NavBarCell1"> <a href="overview-summary.html"><font class="NavBarFont1"><b>Overview</b></font></a> </td>
|
641
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