Ticket #1176: wms_capabilities.patch

lib/OpenLayers/Format/WMSCapabilities_1_1_1.js

@@ +1 @@
+/**
+ * @requires OpenLayers/Format/WMSCapabilities.js
+ *
+ * Class: OpenLayers.Format.WMSCapabilities_1_1_1
+ * Read WMS Capabilities version 1.1.1.
+ * 
+ * Inherits from:
+ *  - <OpenLayers.Format.WMSCapabilities>
+ */
+OpenLayers.Format.WMSCapabilities_1_1_1 = OpenLayers.Class(
+    OpenLayers.Format.WMSCapabilities, {
+    
+    /**
+     * Constructor: OpenLayers.Format.WMSCapabilities_1_1_1
+     * Create a new parser for WMS capabilities version 1_1_1.
+     *
+     * Parameters:
+     * options - {Object} An optional object whose properties will be set on
+     *     this instance.
+     */
+    initialize: function(options) {
+        OpenLayers.Format.WMSCapabilities.prototype.initialize.apply(
+            this, [options]
+        );
+    },
+
+    /**
+     * APIMethod: read
+     * Read capabilities data from a string, and return a list of layers. 
+     * 
+     * Parameters: 
+     * data - {String} or {DOMElement} data to read/parse.
+     *
+     * Returns:
+     * {Array} List of named layers.
+     */
+    read: function(data) {
+        if(typeof data == "string") {
+            data = OpenLayers.Format.XML.prototype.read.apply(this, [data]);
+        }
+        var capabilities = {};
+        var root = data.documentElement;
+        this.runChildNodes(capabilities, root);
+        return capabilities;
+    },
+    
+    /**
+     * Method: runChildNodes
+     */
+    runChildNodes: function(obj, node) {
+        var children = node.childNodes;
+        var childNode, processor;
+        for(var i=0; i<children.length; ++i) {
+            childNode = children[i];
+            if(childNode.nodeType == 1) {
+                processor = this["process" + childNode.nodeName];
+                if(processor) {
+                    processor.apply(this, [obj, childNode]);
+                }
+            }
+        }
+    },
+    
+    /**
+     * Method: processCapability
+     */
+    processCapability: function(capabilities, node) {
+        var capability = {
+            layers: []
+        };
+        this.runChildNodes(capability, node);
+        capabilities.capability = capability;
+    },
+    
+    /**
+     * Method: processService
+     */
+    processService: function(capabilities, node) {
+        var service = {};
+        this.runChildNodes(service, node);
+        capabilities.service = service;
+    },
+
+    /**
+     * Method: processLayer
+     */
+    processLayer: function(capability, node, parentLayer) {
+        var layer = {
+            styles: []
+        };
+        // deal with property inheritance
+        if(parentLayer) {
+            // add style
+            layer.styles = layer.styles.concat(parent.styles);
+        }
+        var children = node.childNodes;
+        var childNode, nodeName, processor;
+        for(var i=0; i<children.length; ++i) {
+            childNode = children[i];
+            nodeName = childNode.nodeName;
+            processor = this["process" + childNode.nodeName];
+            if(processor) {
+                if(nodeName == "Layer") {
+                    processor.apply(this, [capability, childNode, parentLayer]);
+                } else {
+                    processor.apply(this, [layer, childNode]);
+                }
+            }
+        }
+        if(layer.name) {
+            var index = layer.name.indexOf(":");
+            if(index > 0) {
+                layer.prefix = layer.name.substring(0, index);
+            }
+            capability.layers.push(layer);
+        }
+    },
+    
+    /**
+     * Method: processName
+     */
+    processName: function(obj, node) {
+        var name = this.getChildValue(node);
+        if(name) {
+            obj.name = name;
+        }
+    },
+
+    /**
+     * Method: processTitle
+     */
+    processTitle: function(obj, node) {
+        var title = this.getChildValue(node);
+        if(title) {
+            obj.title = title;
+        }
+    },
+
+    /**
+     * Method: processAbstract
+     */
+    processAbstract: function(obj, node) {
+        var abst = this.getChildValue(node);
+        if(abst) {
+            obj["abstract"] = abst;
+        }
+    },
+    
+    /**
+     * Method: processLatLonBoundingBox
+     */
+    processLatLonBoundingBox: function(layer, node) {
+        layer.llbbox = [
+            parseFloat(node.getAttribute("minx")),
+            parseFloat(node.getAttribute("miny")),
+            parseFloat(node.getAttribute("maxx")),
+            parseFloat(node.getAttribute("maxy"))
+        ];
+    },
+
+    /**
+     * Method: processStyle
+     */
+    processStyle: function(layer, node) {
+        var style = {};
+        this.runChildNodes(style, node);
+        layer.styles.push(style);
+    },
+
+    /**
+     * Method: processLegendURL
+     */
+    processLegendURL: function(style, node) {
+        var legend = {
+            width: node.getAttribute('width'),
+            height: node.getAttribute('height')
+        };
+        var links = node.getElementsByTagName("OnlineResource");
+        if(links.length > 0) {
+            this.processOnlineResource(legend, links[0]);
+        }
+        style.legend = legend;
+    },
+    
+    /**
+     * Method: processOnlineResource
+     */
+    processOnlineResource: function(obj, node) {
+        obj.href = this.getAttributeNS(
+            node, "http://www.w3.org/1999/xlink", "href"
+        );
+    },
+
+    CLASS_NAME: "OpenLayers.Format.WMSCapabilities_1_1_1" 
+
+});

lib/OpenLayers/Format/WMSCapabilities.js

@@ +1 @@
+/**
+ * @requires OpenLayers/Format/XML.js
+ *
+ * Class: OpenLayers.Format.WMSCapabilities
+ * Read WMS Capabilities.
+ * 
+ * Inherits from:
+ *  - <OpenLayers.Format.XML>
+ */
+OpenLayers.Format.WMSCapabilities = OpenLayers.Class(OpenLayers.Format.XML, {
+    
+    /**
+     * APIProperty: defaultVersion
+     * {String} Version number to assume if none found.  Default is "1.1.1".
+     */
+    defaultVersion: "1.1.1",
+    
+    /**
+     * APIProperty: version
+     * {String} Specify a version string if one is known.
+     */
+    version: null,
+
+    /**
+     * Constructor: OpenLayers.Format.WMSCapabilities
+     * Create a new parser for WMS capabilities.
+     *
+     * Parameters:
+     * options - {Object} An optional object whose properties will be set on
+     *     this instance.
+     */
+    initialize: function(options) {
+        OpenLayers.Format.XML.prototype.initialize.apply(this, [options]);
+        this.options = options;
+    },
+
+    /**
+     * APIMethod: read
+     * Read capabilities data from a string, and return a list of layers. 
+     * 
+     * Parameters: 
+     * data - {String} or {DOMElement} data to read/parse.
+     *
+     * Returns:
+     * {Array} List of named layers.
+     */
+    read: function(data) {
+        if(typeof data == "string") {
+            data = OpenLayers.Format.XML.prototype.read.apply(this, [data]);
+        }
+        var root = data.documentElement;
+        var version = this.version;
+        if(!version) {
+            version = root.getAttribute("version");
+            if(!version) {
+                version = this.defaultVersion;
+            }
+        }
+        var constructor = OpenLayers.Format[
+            "WMSCapabilities_" + version.replace(/\./g, "_")
+        ];
+        if(!constructor) {
+            throw "Can't find a WMS capabilities parser for version " + version;
+        }
+        var parser = new constructor(this.options);
+        var capabilities = parser.read(data);
+        capabilities.version = version;
+        return capabilities;
+    },
+    
+    CLASS_NAME: "OpenLayers.Format.WMSCapabilities" 
+
+});