add WMS 1.3 GetCapabilities parser, r=ahocevar (closes #2294)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@9894 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
2009-12-16 10:24:12 +00:00
parent e9264d89eb
commit 31189f1e45
7 changed files with 1145 additions and 379 deletions
--- a/lib/OpenLayers/Format/WMSCapabilities/v1_3.js
+++ b/lib/OpenLayers/Format/WMSCapabilities/v1_3.js
@@ -0,0 +1,123 @@
+/**
+ * @requires OpenLayers/Format/WMSCapabilities/v1.js
+ */
+
+/**
+ * Class: OpenLayers.Format.WMSCapabilities/v1_3
+ * Abstract base class for WMS Capabilities version 1.3.X. 
+ * SLD 1.1.0 adds in the extra operations DescribeLayer and GetLegendGraphic, 
+ * see: http://schemas.opengis.net/sld/1.1.0/sld_capabilities.xsd
+ * 
+ * Inherits from:
+ *  - <OpenLayers.Format.WMSCapabilities.v1>
+ */
+OpenLayers.Format.WMSCapabilities.v1_3 = OpenLayers.Class(
+    OpenLayers.Format.WMSCapabilities.v1, {
+    
+    /**
+     * Property: readers
+     * Contains public functions, grouped by namespace prefix, that will
+     *     be applied when a namespaced node is found matching the function
+     *     name.  The function will be applied in the scope of this parser
+     *     with two arguments: the node being read and a context object passed
+     *     from the parent.
+     */
+    readers: {
+        "wms": OpenLayers.Util.applyDefaults({
+            "WMS_Capabilities": function(node, obj) {
+                this.readChildNodes(node, obj);
+            },
+            "LayerLimit": function(node, obj) {
+                obj.layerLimit = parseInt(this.getChildValue(node));
+            },
+            "MaxWidth": function(node, obj) {
+                obj.maxWidth = parseInt(this.getChildValue(node));
+            },
+            "MaxHeight": function(node, obj) {
+                obj.maxHeight = parseInt(this.getChildValue(node));
+            },
+            "BoundingBox": function(node, obj) {
+                var bbox = OpenLayers.Format.WMSCapabilities.v1.prototype.readers["wms"].BoundingBox.apply(this, [node, obj]);
+                bbox.srs  = node.getAttribute("CRS");
+                obj.bbox[bbox.srs] = bbox;
+            },
+            "CRS": function(node, obj) {
+                // CRS is the synonym of SRS
+                this.readers.wms.SRS.apply(this, [node, obj]); 
+            },
+            "EX_GeographicBoundingBox": function(node, obj) {
+                // replacement of LatLonBoundingBox
+                obj.llbbox = [];
+                this.readChildNodes(node, obj.llbbox);
+                
+            },
+            "westBoundLongitude": function(node, obj) {
+                obj[0] = this.getChildValue(node);
+            },
+            "eastBoundLongitude": function(node, obj) {
+                obj[2] = this.getChildValue(node);
+            },
+            "southBoundLatitude": function(node, obj) {
+                obj[1] = this.getChildValue(node);
+            },
+            "northBoundLatitude": function(node, obj) {
+                obj[3] = this.getChildValue(node);
+            },
+            "MinScaleDenominator": function(node, obj) {
+                obj.maxScale = parseFloat(this.getChildValue(node)).toPrecision(16);
+            },
+            "MaxScaleDenominator": function(node, obj) {
+                obj.minScale = parseFloat(this.getChildValue(node)).toPrecision(16);
+            },
+            "Dimension": function(node, obj) {
+                // dimension has extra attributes: default, multipleValues, 
+                // nearestValue, current which used to be part of Extent. It now
+                // also contains the values.
+                var name = node.getAttribute("name").toLowerCase();
+                var dim = {
+                    name: name,
+                    units: node.getAttribute("units"),
+                    unitsymbol: node.getAttribute("unitSymbol"),
+                    nearestVal: node.getAttribute("nearestValue") === "1",
+                    multipleVal: node.getAttribute("multipleValues") === "1",
+                    "default": node.getAttribute("default") || "",
+                    current: node.getAttribute("current") === "1",
+                    values: this.getChildValue(node).split(",")
+                    
+                };
+                // Theoretically there can be more dimensions with the same
+                // name, but with a different unit. Until we meet such a case,
+                // let's just keep the same structure as the WMS 1.1 
+                // GetCapabilities parser uses. We will store the last
+                // one encountered.
+                obj.dimensions[dim.name] = dim;
+            },
+            "Keyword": function(node, obj) {
+                // TODO: should we change the structure of keyword in v1.js?
+                // Make it an object with a value instead of a string?
+                var keyword = {value: this.getChildValue(node), 
+                    vocabulary: node.getAttribute("vocabulary")};
+                if (obj.keywords) {
+                    obj.keywords.push(keyword);
+                }
+            }
+        }, OpenLayers.Format.WMSCapabilities.v1.prototype.readers["wms"]),
+        "sld": {
+            "UserDefinedSymbolization": function(node, obj) {
+                this.readers.wms.UserDefinedSymbolization.apply(this, [node, obj]);
+                // add the two extra attributes
+                obj.userSymbols.inlineFeature = parseInt(node.getAttribute("InlineFeature")) == 1;
+                obj.userSymbols.remoteWCS = parseInt(node.getAttribute("RemoteWCS")) == 1;
+            },
+            "DescribeLayer": function(node, obj) {
+                this.readers.wms.DescribeLayer.apply(this, [node, obj]);
+            },
+            "GetLegendGraphic": function(node, obj) {
+                this.readers.wms.GetLegendGraphic.apply(this, [node, obj]);
+            }
+        }
+    },
+    
+    CLASS_NAME: "OpenLayers.Format.WMSCapabilities.v1_3" 
+
+});