implement versioned format base class, r=ahocevar (closes #2954)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@12155 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Format/WMTSCapabilities.js

@@ -4,7 +4,7 @@
  * full text of the license. */
 
 /**
- * @requires OpenLayers/Format/XML.js
+ * @requires OpenLayers/Format/XML/VersionedOGC.js
  */
  
 /**
@@ -12,9 +12,9 @@
  * Read WMTS Capabilities.
  * 
  * Inherits from:
- *  - <OpenLayers.Format.XML>
+ *  - <OpenLayers.Format.XML.VersionedOGC>
  */
-OpenLayers.Format.WMTSCapabilities = OpenLayers.Class(OpenLayers.Format.XML, {
+OpenLayers.Format.WMTSCapabilities = OpenLayers.Class(OpenLayers.Format.XML.VersionedOGC, {
     
     /**
      * APIProperty: defaultVersion
@@ -22,18 +22,6 @@ OpenLayers.Format.WMTSCapabilities = OpenLayers.Class(OpenLayers.Format.XML, {
      */
     defaultVersion: "1.0.0",
     
-    /**
-     * APIProperty: version
-     * {String} Specify a version string if one is known.
-     */
-    version: null,
-
-    /**
-     * Property: parser
-     * {<OpenLayers.Format>} A cached versioned format used for reading.
-     */
-    parser: null,
-    
     /**
      * APIProperty: yx
      * {Object} Members in the yx object are used to determine if a CRS URN
@@ -67,23 +55,6 @@ OpenLayers.Format.WMTSCapabilities = OpenLayers.Class(OpenLayers.Format.XML, {
      * Returns:
      * {Object} Info about the WMTS Capabilities
      */
-    read: function(data) {
-        if (typeof data == "string") {
-            data = OpenLayers.Format.XML.prototype.read.apply(this, [data]);
-        }
-        var root = data.documentElement;
-        var version = this.version || root.getAttribute("version") || this.defaultVersion;
-        if (!this.parser || this.parser.version !== version) {
-            var constr = OpenLayers.Format.WMTSCapabilities[
-                "v" + version.replace(/\./g, "_")
-            ];
-            if (!constr) {
-                throw new Error("Can't find a WMTS capabilities parser for version " + version);
-            }
-            this.parser = new constr(this.options);
-        }
-        return this.parser.read(data);
-    },
 
     /**
      * APIMethod: createLayer