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/*
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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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*/
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// Ensure this object's dependancies are loaded.
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mapbuilder.loadScript(baseDir+"/model/ModelBase.js");
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/**
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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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* @constructor
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* @base ModelBase
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* @author Cameron Shorter
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* @param modelNode Pointer to the xml node for this model from the config file.
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* @param parent The parent model for the object.
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*
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*/
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function Context(modelNode, parent) {
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// Inherit the ModelBase functions and parameters
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ModelBase.apply(this, new Array(modelNode, parent));
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this.namespace = "xmlns:mb='http://mapbuilder.sourceforge.net/mapbuilder' xmlns:wmc='http://www.opengis.net/context' xmlns:xsl='http://www.w3.org/1999/XSL/Transform'";
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/**
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* Change a Layer's visibility.
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* @param layerId The name of the layer that is to be changed
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* @param hidden String with the value to be set; 1=hidden, 0=visible.
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*/
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this.setHidden=function(layerId, hidden){
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// Set the hidden attribute in the Context
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var hiddenValue = "0";
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if (hidden) hiddenValue = "1";
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var layer = this.getLayer(layerId);
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if (layer) layer.setAttribute("hidden", hiddenValue);
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// Call the listeners
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this.callListeners("hidden", layerId);
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}
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/**
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* Get the layer's visiblity attribute value.
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* @param layerId The name of the layer that is to be changed
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* @return hidden String with the value; 1=hidden, 0=visible.
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*/
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this.getHidden=function(layerId){
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var hidden=1;
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var layer = this.getLayer(layerId);
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if (layer) hidden = layer.getAttribute("hidden");
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return hidden;
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}
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/**
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* Get the BoundingBox value from the Context document.
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* @return BoundingBox array with the sequence (xmin,ymin,xmax,ymax).
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*/
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this.getBoundingBox=function() {
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var bbox = new Array();
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// Extract BoundingBox from the context
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var boundingBox=this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:BoundingBox");
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bbox[0]=parseFloat(boundingBox.getAttribute("minx"));
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bbox[1]=parseFloat(boundingBox.getAttribute("miny"));
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bbox[2]=parseFloat(boundingBox.getAttribute("maxx"));
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bbox[3]=parseFloat(boundingBox.getAttribute("maxy"));
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return bbox;
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}
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/**
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* Set the BoundingBox element and call the refresh listeners
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* @param boundingBox array in the sequence (xmin, ymin, xmax, ymax).
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*/
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this.setBoundingBox=function(boundingBox) {
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// Set BoundingBox in context
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var bbox=this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:BoundingBox");
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bbox.setAttribute("minx", boundingBox[0]);
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bbox.setAttribute("miny", boundingBox[1]);
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bbox.setAttribute("maxx", boundingBox[2]);
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bbox.setAttribute("maxy", boundingBox[3]);
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// Call the listeners
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this.callListeners("bbox", boundingBox);
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}
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/**
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* Set the BoundingBox element and call the refresh listeners
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* @param boundingBox array in the sequence (xmin, ymin, xmax, ymax).
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*/
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this.initBbox=function(objRef) {
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// Set BoundingBox in context from URL CGI params
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if (window.cgiArgs["bbox"]) { //set as minx,miny,maxx,maxy
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var bbox = window.cgiArgs["bbox"].split(',');
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objRef.setBoundingBox(bbox);
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}
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}
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this.addListener( "loadModel", this.initBbox, this );
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//this.addListener( "contextLoaded", this.initBbox, this );
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/**
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* Set the aoi param and call the refresh listeners
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* @param boundingBox array in the sequence (xmin, ymin, xmax, ymax).
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*/
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this.initAoi=function(objRef) {
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// Set AOI of context from URL CGI params
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if (window.cgiArgs["aoi"]) { //set as ul,lr point arrays
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var aoi = window.cgiArgs["aoi"].split(',');
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objRef.setParam("aoi",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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this.addListener( "loadModel", this.initAoi, this );
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//MA this.addListener( "contextLoaded", this.initAoi, this );
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/**
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* Set the Spatial Reference System for the context document.
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* @param srs The Spatial Reference System.
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*/
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this.setSRS=function(srs) {
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var bbox=this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:BoundingBox");
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bbox.setAttribute("SRS",srs);
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this.callListeners("srs");
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}
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/**
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* Get the Spatial Reference System from the context document.
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* @return srs The Spatial Reference System.
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*/
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this.getSRS=function() {
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var bbox=this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:BoundingBox");
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srs=bbox.getAttribute("SRS");
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srs = srs ? srs : 'EPSG:4326';
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return srs;
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}
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/**
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* Get the Projection object from the context document.
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* @return Proj Object of The Spatial Reference System.
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*/
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this.initProj=function(objRef) {
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objRef.proj=new OpenLayers.Projection(objRef.getSRS());
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}
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this.addFirstListener( "loadModel", this.initProj, this );
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/**
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* Get the Window width.
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* @return width The width of map window from the context document
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*/
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this.getWindowWidth=function() {
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var win=this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:Window");
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return win.getAttribute("width");
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}
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/**
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* Set the Window width.
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* @param width The width of map window to set in the context document
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*/
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this.setWindowWidth=function(width) {
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var win=this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:Window");
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win.setAttribute("width", width);
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this.callListeners("resize");
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}
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/**
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* Get the Window height.
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* @return height The height of map window from the context document.
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*/
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this.getWindowHeight=function() {
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var win=this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:Window");
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return win.getAttribute("height");
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}
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/**
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* Set the Window height.
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* @param height The height of map window to set in the context document
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*/
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this.setWindowHeight=function(height) {
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var win=this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:Window");
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win.setAttribute("height", height);
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this.callListeners("resize");
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}
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/**
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* Returns the width/height of the map window as an array
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*/
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this.getWindowSize=function() {
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var win=this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:Window");
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return new Array(win.getAttribute("width"), win.getAttribute("height"));
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}
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/**
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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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* @param size Size of the map window as (width, height) array
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*/
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this.setWindowSize=function(size) {
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var width = size[0];
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var height = size[1];
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var win=this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:Window");
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win.setAttribute("width", width);
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win.setAttribute("height", height);
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this.callListeners("resize");
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}
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/**
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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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* @param featureName name of the featureType to look up
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* @return the Layer node with the specified name.
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*/
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this.getFeatureNode = function(featureName) {
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return this.doc.selectSingleNode(this.nodeSelectXpath+"[wmc:Name='"+featureName+"']");
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}
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/**
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* Returns the serverUrl for the layer passed in as the feature argument.
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* @param requestName ignored for context docs (only GetMap supported)
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* @param method ignored for context docs (only GET supported)
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* @param feature the Layer node from the context doc
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* @return URL for the GetMap request
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*/
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this.getServerUrl = function(requestName, method, feature) {
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return feature.selectSingleNode("wmc:Server/wmc:OnlineResource").getAttribute("xlink:href");
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}
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/**
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* Returns the WMS version for the layer passed in as the feature argument
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* @param feature the Layer node from the context doc
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* @return the WMS GetMap version for the Layer.
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*/
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this.getVersion = function(feature) {
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return feature.selectSingleNode("wmc:Server").getAttribute("version");
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}
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/**
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* Get HTTP method for the specified feature
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* @param feature the Layer node from the context doc
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* @return the HTTP method to get the feature with
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*/
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this.getMethod = function(feature) {
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return feature.selectSingleNode("wmc:Server/wmc:OnlineResource").getAttribute("wmc:method");
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}
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/**
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* Method to get a list of queryable layers
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* @return the list with queryable layers
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*/
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this.getQueryableLayers = function() {
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var listNodeArray = this.doc.selectNodes("/wmc:ViewContext/wmc:LayerList/wmc:Layer[attribute::queryable='1']");
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return listNodeArray;
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}
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/**
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* Method to get a list of all layers in the context doc
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* TBD: merge this with above, passing queryable as an optional boolean param?
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* @return the list with all layers
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*/
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this.getAllLayers = function() {
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var listNodeArray = this.doc.selectNodes("/wmc:ViewContext/wmc:LayerList/wmc:Layer");
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return listNodeArray;
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}
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/**
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* Method to get a layer with the specified name in the context doc
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* @param layerId the id of the layer to be returned
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* @return the list with all layers
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*/
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this.getLayer = function(layerId) {
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var layer = this.doc.selectSingleNode("/wmc:ViewContext/wmc:LayerList/wmc:Layer[@id='"+layerId+"']");
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if (layer == null) {
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layer = this.doc.selectSingleNode("/wmc:ViewContext/wmc:LayerList/wmc:Layer[wmc:Name='"+layerId+"']");
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}
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//TBD: add in time stamp
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return layer;
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}
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/**
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* Method to get a layer id with the specified id/name in the context doc
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* @param layerName the name of the layer of which the id is to be returned
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* @return the id of the layer || false
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*/
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this.getLayerIdByName = function(layerName) {
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var layer = this.getLayer(layerName);
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var id;
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if (layer) {
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id = layer.getAttribute("id");
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}
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return id || false;
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}
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/**
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* Method to add a Layer to the LayerList
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* @param layerNode the Layer node from another context doc or capabiltiies doc
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*/
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this.addLayer = function(objRef, layerNode) {
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var parentNode = objRef.doc.selectSingleNode("/wmc:ViewContext/wmc:LayerList");
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parentNode.appendChild(layerNode);
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// Generate layer id if layer doesn't have an id
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if (!layerNode.getAttribute("id")) {
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var randomNumber = Math.round(10000 * Math.random());
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id = Mapbuilder.getProperty(layerNode, "wmc:Name") + "_" + randomNumber;
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layerNode.setAttribute("id", id);
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}
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objRef.modified = true;
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//objRef.callListeners("refresh");
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}
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this.addFirstListener( "addLayer", this.addLayer, this );
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/**
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* Method to add a Sld tag to the StyleList
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* @param layerName the Layer name from another context doc or capabiltiies doc
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*/
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this.addSLD = function(objRef,sldNode) {
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// alert("context addSLD : "+objRef.id);
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var layerName=Mapbuilder.getProperty(sldNode, "//Name");
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var parentNode = objRef.doc.selectSingleNode("//wmc:Layer[wmc:Name='"+layerName+"']");
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parentNode.appendChild(sldNode.cloneNode(true));
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objRef.modified = true;
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var attribs=[];
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attribs["sld_body"]=(new XMLSerializer()).serializeToString(objRef.doc.selectSingleNode("//wmc:Layer[wmc:Name='"+layerName+"']/wmc:StyleList/wmc:Style/wmc:SLD/wmc:StyledLayerDescriptor"));
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objRef.map.mbMapPane.refreshLayer(objRef.map.mbMapPane,layerName,attribs);
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}
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this.addFirstListener( "addSLD", this.addSLD, this );
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/**
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* Method to remove a Layer from the LayerList
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* @param layerId the Layer to be deleted
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*/
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this.deleteLayer = function(objRef, layerId) {
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var deletedNode = objRef.getLayer(layerId);
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if (!deletedNode) {
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alert(mbGetMessage("nodeNotFound", layerId));
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return;
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}
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deletedNode.parentNode.removeChild(deletedNode);
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objRef.modified = true;
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}
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this.addFirstListener( "deleteLayer", this.deleteLayer, this );
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348
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/**
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349
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* Method to move a Layer in the LayerList up
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* @param layerId the layer to be moved
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351
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*/
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this.moveLayerUp = function(objRef, layerId) {
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var movedNode = objRef.getLayer(layerId);
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var sibNode = movedNode.selectSingleNode("following-sibling::*");
|
|
355
|
if (!sibNode) {
|
|
356
|
alert(mbGetMessage("cantMoveUp", layerId));
|
|
357
|
return;
|
|
358
|
}
|
|
359
|
movedNode.parentNode.insertBefore(sibNode,movedNode);
|
|
360
|
objRef.modified = true;
|
|
361
|
}
|
|
362
|
this.addFirstListener( "moveLayerUp", this.moveLayerUp, this );
|
|
363
|
|
|
364
|
/**
|
|
365
|
* Method to move a Layer in the LayerList down
|
|
366
|
* @param layerId the layer to be moved
|
|
367
|
*/
|
|
368
|
this.moveLayerDown = function(objRef, layerId) {
|
|
369
|
var movedNode = objRef.getLayer(layerId);
|
|
370
|
var listNodeArray = movedNode.selectNodes("preceding-sibling::*"); //preceding-sibling axis contains all previous siblings
|
|
371
|
var sibNode = listNodeArray[listNodeArray.length-1];
|
|
372
|
if (!sibNode) {
|
|
373
|
alert(mbGetMessage("cantMoveDown", layerId));
|
|
374
|
return;
|
|
375
|
}
|
|
376
|
movedNode.parentNode.insertBefore(movedNode,sibNode);
|
|
377
|
objRef.modified = true;
|
|
378
|
}
|
|
379
|
this.addFirstListener( "moveLayerDown", this.moveLayerDown, this );
|
|
380
|
|
|
381
|
/**
|
|
382
|
* Adds a node to the Context document extension element. The extension element
|
|
383
|
* will be created if it doesn't already exist.
|
|
384
|
* @param extensionNode the node to be appended in the extension element.
|
|
385
|
* @return the ndoe added to the extension element
|
|
386
|
*/
|
|
387
|
this.setExtension = function(extensionNode) {
|
|
388
|
var extension = this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:Extension");
|
|
389
|
if (!extension) {
|
|
390
|
var general = this.doc.selectSingleNode("/wmc:ViewContext/wmc:General");
|
|
391
|
var newChild = createElementWithNS(this.doc,"Extension",'http://www.opengis.net/context');
|
|
392
|
extension = general.appendChild(newChild);
|
|
393
|
}
|
|
394
|
return extension.appendChild(extensionNode);
|
|
395
|
}
|
|
396
|
|
|
397
|
/**
|
|
398
|
* Returns the contents of the extension element
|
|
399
|
* @return the contents of the extension element
|
|
400
|
*/
|
|
401
|
this.getExtension = function() {
|
|
402
|
return this.doc.selectSingleNode("/wmc:ViewContext/wmc:General/wmc:Extension");
|
|
403
|
}
|
|
404
|
|
|
405
|
/**
|
|
406
|
* Parses a Dimension element from the Context document as a loadModel listener.
|
|
407
|
* This results in an XML structure with one element for each GetMap time value
|
|
408
|
* parameter and added to the Context extrension element.
|
|
409
|
* @param objRef a pointer to this object
|
|
410
|
*/
|
|
411
|
this.initTimeExtent = function( objRef ) {
|
|
412
|
//only the first one selected is used as the timestamp source
|
|
413
|
//var extentNode = objRef.doc.selectSingleNode("//wmc:Layer/wmc:Dimension[@name='time']");
|
|
414
|
//TBD: how to deal with multiple time dimensions in one context doc, or caps doc?
|
|
415
|
var timeNodes = objRef.doc.selectNodes("//wmc:Dimension[@name='time']");
|
|
416
|
for (var i=0; i<timeNodes.length; ++i) {
|
|
417
|
var extentNode = timeNodes[i];
|
|
418
|
objRef.timestampList = createElementWithNS(objRef.doc,"TimestampList",mbNsUrl);
|
|
419
|
var layerId;
|
|
420
|
var layerNode = extentNode.parentNode.parentNode;
|
|
421
|
if (layerNode.selectSingleNode("@id")) {
|
|
422
|
layerId = Mapbuilder.getProperty(layerNode, "@id");
|
|
423
|
} else {
|
|
424
|
layerId = Mapbuilder.getProperty(layerNode, "wmc:Name");
|
|
425
|
}
|
|
426
|
objRef.timestampList.setAttribute("layerId", layerId);
|
|
427
|
//alert("found time dimension, extent:"+getNodeValue(extentNode));
|
|
428
|
var times = getNodeValue(extentNode).split(","); //comma separated list of arguments
|
|
429
|
for (var j=0; j<times.length; ++j) {
|
|
430
|
var params = times[j].split("/"); // parses start/end/period
|
|
431
|
if (params.length==3) {
|
|
432
|
var start = setISODate(params[0]);
|
|
433
|
var stop = setISODate(params[1]);
|
|
434
|
var period = params[2];
|
|
435
|
var parts = period.match(/^P((\d*)Y)?((\d*)M)?((\d*)D)?T?((\d*)H)?((\d*)M)?((.*)S)?/);
|
|
436
|
for (var i=1; i<parts.length; ++i) {
|
|
437
|
if (!parts[i]) parts[i]=0;
|
|
438
|
}
|
|
439
|
//alert("start time:"+start.toString());
|
|
440
|
do {
|
|
441
|
var timestamp = createElementWithNS(objRef.doc,"Timestamp",mbNsUrl);
|
|
442
|
timestamp.appendChild(objRef.doc.createTextNode(getISODate(start)));
|
|
443
|
objRef.timestampList.appendChild(timestamp);
|
|
444
|
|
|
445
|
start.setFullYear(start.getFullYear()+parseInt(parts[2],10));
|
|
446
|
start.setMonth(start.getMonth()+parseInt(parts[4],10));
|
|
447
|
start.setDate(start.getDate()+parseInt(parts[6],10));
|
|
448
|
start.setHours(start.getHours()+parseInt(parts[8],10));
|
|
449
|
start.setMinutes(start.getMinutes()+parseInt(parts[10],10));
|
|
450
|
start.setSeconds(start.getSeconds()+parseFloat(parts[12]));
|
|
451
|
//alert("time:"+start.toString());
|
|
452
|
} while(start.getTime() <= stop.getTime());
|
|
453
|
|
|
454
|
} else {
|
|
455
|
//output single date value
|
|
456
|
var timestamp = createElementWithNS(objRef.doc,"Timestamp",mbNsUrl);
|
|
457
|
timestamp.appendChild(objRef.doc.createTextNode(times[j]));
|
|
458
|
objRef.timestampList.appendChild(timestamp);
|
|
459
|
}
|
|
460
|
}
|
|
461
|
objRef.setExtension(objRef.timestampList);
|
|
462
|
}
|
|
463
|
}
|
|
464
|
this.addFirstListener( "loadModel", this.initTimeExtent, this );
|
|
465
|
|
|
466
|
/**
|
|
467
|
* clear the time extent created by initTimeExtent
|
|
468
|
* @param objRef reference to this model
|
|
469
|
*/
|
|
470
|
this.clearTimeExtent = function( objRef ) {
|
|
471
|
var tsList = objRef.timestampList;
|
|
472
|
if (tsList) {
|
|
473
|
tsList.parentNode.removeChild(tsList);
|
|
474
|
}
|
|
475
|
}
|
|
476
|
this.addListener("newModel", this.clearTimeExtent, this);
|
|
477
|
|
|
478
|
/**
|
|
479
|
* Returns the current timestamp value.
|
|
480
|
* @param layerId the name of the Layer from which the timestamp list was generated
|
|
481
|
* @return the current timestamp value.
|
|
482
|
*/
|
|
483
|
this.getCurrentTimestamp = function( layerId ) {
|
|
484
|
var index = this.getParam("timestamp");
|
|
485
|
return getNodeValue(this.timestampList.childNodes[index]);
|
|
486
|
}
|
|
487
|
|
|
488
|
// PL -BRGM
|
|
489
|
/**
|
|
490
|
* Change a Layer's opacity
|
|
491
|
* @param layerId The name of the layer that is to be changed
|
|
492
|
* @param Opacity Value of the opacity
|
|
493
|
*/
|
|
494
|
this.setOpacity=function(layerId, Opacity){
|
|
495
|
// Set the hidden attribute in the Context
|
|
496
|
var layer = this.getLayer(layerId);
|
|
497
|
if (layer) layer.setAttribute("opacity", Opacity);
|
|
498
|
// Call the listeners
|
|
499
|
this.callListeners("opacity", layerId);
|
|
500
|
}
|
|
501
|
|
|
502
|
/**
|
|
503
|
* Get the layer's opacity attribute value.
|
|
504
|
* @param layerId The name of the layer that is to be changed
|
|
505
|
* @return hidden String with the value; 1=hidden, 0=visible.
|
|
506
|
*/
|
|
507
|
this.getOpacity=function(layerId){
|
|
508
|
var opacity=1;
|
|
509
|
var layer = this.getLayer(layerId);
|
|
510
|
if (layer) opacity = layer.getAttribute("opacity");
|
|
511
|
return opacity;
|
|
512
|
}
|
|
513
|
// PL -END
|
|
514
|
}
|