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/* Copyright (c) 2006-2013 by OpenLayers Contributors (see authors.txt for
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* full list of contributors). Published under the 2-clause BSD license.
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* See license.txt in the OpenLayers distribution or repository for the
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* full text of the license. */
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/**
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* @requires OpenLayers/Format/XML.js
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* @requires OpenLayers/Format/Context.js
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*/
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/**
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* Class: OpenLayers.Format.WMC
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* Read and write Web Map Context documents.
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*
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* Inherits from:
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* - <OpenLayers.Format.Context>
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*/
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OpenLayers.Format.WMC = OpenLayers.Class(OpenLayers.Format.Context, {
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/**
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* APIProperty: defaultVersion
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* {String} Version number to assume if none found. Default is "1.1.0".
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*/
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defaultVersion: "1.1.0",
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/**
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* Constructor: OpenLayers.Format.WMC
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* Create a new parser for Web Map Context documents.
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*
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* Parameters:
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* options - {Object} An optional object whose properties will be set on
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* this instance.
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*/
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/**
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* Method: layerToContext
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* Create a layer context object given a wms layer object.
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*
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* Parameters:
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* layer - {<OpenLayers.Layer.WMS>} The layer.
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*
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* Returns:
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* {Object} A layer context object.
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*/
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layerToContext: function(layer) {
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var parser = this.getParser();
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var layerContext = {
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queryable: layer.queryable,
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visibility: layer.visibility,
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name: layer.params["LAYERS"],
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title: layer.name,
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"abstract": layer.metadata["abstract"],
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dataURL: layer.metadata.dataURL,
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metadataURL: layer.metadataURL,
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server: {
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version: layer.params["VERSION"],
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url: layer.url
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},
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maxExtent: layer.maxExtent,
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transparent: layer.params["TRANSPARENT"],
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numZoomLevels: layer.numZoomLevels,
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units: layer.units,
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isBaseLayer: layer.isBaseLayer,
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opacity: layer.opacity == 1 ? undefined : layer.opacity,
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displayInLayerSwitcher: layer.displayInLayerSwitcher,
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singleTile: layer.singleTile,
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tileSize: (layer.singleTile || !layer.tileSize) ?
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undefined : {width: layer.tileSize.w, height: layer.tileSize.h},
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minScale : (layer.options.resolutions ||
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layer.options.scales ||
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layer.options.maxResolution ||
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layer.options.minScale) ?
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layer.minScale : undefined,
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maxScale : (layer.options.resolutions ||
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layer.options.scales ||
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layer.options.minResolution ||
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layer.options.maxScale) ?
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layer.maxScale : undefined,
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formats: [],
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styles: [],
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srs: layer.srs,
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dimensions: layer.dimensions
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};
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if (layer.metadata.servertitle) {
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layerContext.server.title = layer.metadata.servertitle;
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}
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if (layer.metadata.formats && layer.metadata.formats.length > 0) {
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for (var i=0, len=layer.metadata.formats.length; i<len; i++) {
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var format = layer.metadata.formats[i];
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layerContext.formats.push({
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value: format.value,
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current: (format.value == layer.params["FORMAT"])
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});
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}
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} else {
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layerContext.formats.push({
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value: layer.params["FORMAT"],
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current: true
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});
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}
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if (layer.metadata.styles && layer.metadata.styles.length > 0) {
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for (var i=0, len=layer.metadata.styles.length; i<len; i++) {
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var style = layer.metadata.styles[i];
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if ((style.href == layer.params["SLD"]) ||
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(style.body == layer.params["SLD_BODY"]) ||
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(style.name == layer.params["STYLES"])) {
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style.current = true;
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} else {
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style.current = false;
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}
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layerContext.styles.push(style);
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}
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} else {
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layerContext.styles.push({
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href: layer.params["SLD"],
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body: layer.params["SLD_BODY"],
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name: layer.params["STYLES"] || parser.defaultStyleName,
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title: parser.defaultStyleTitle,
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current: true
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});
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}
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return layerContext;
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},
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/**
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* Method: toContext
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* Create a context object free from layer given a map or a
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* context object.
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*
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* Parameters:
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* obj - {<OpenLayers.Map> | Object} The map or context.
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*
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* Returns:
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* {Object} A context object.
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*/
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toContext: function(obj) {
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var context = {};
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var layers = obj.layers;
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if (obj.CLASS_NAME == "OpenLayers.Map") {
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var metadata = obj.metadata || {};
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context.size = obj.getSize();
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context.bounds = obj.getExtent();
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context.projection = obj.projection;
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context.title = obj.title;
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context.keywords = metadata.keywords;
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context["abstract"] = metadata["abstract"];
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context.logo = metadata.logo;
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context.descriptionURL = metadata.descriptionURL;
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context.contactInformation = metadata.contactInformation;
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context.maxExtent = obj.maxExtent;
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} else {
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// copy all obj properties except the "layers" property
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OpenLayers.Util.applyDefaults(context, obj);
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if (context.layers != undefined) {
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delete(context.layers);
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}
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}
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if (context.layersContext == undefined) {
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context.layersContext = [];
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}
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// let's convert layers into layersContext object (if any)
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if (layers != undefined && OpenLayers.Util.isArray(layers)) {
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for (var i=0, len=layers.length; i<len; i++) {
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var layer = layers[i];
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if (layer instanceof OpenLayers.Layer.WMS) {
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context.layersContext.push(this.layerToContext(layer));
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}
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}
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}
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return context;
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},
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CLASS_NAME: "OpenLayers.Format.WMC"
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});
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