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