add getDataExtent() method to layer (experimental) and to markers layer (api supported). thanks for the feature request and original patch, anonymous ol-er :-) (Closes #750)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@4051 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf
2007-08-27 14:44:44 +00:00
parent 1cf74313ab
commit 4636c4a6d4
3 changed files with 61 additions and 0 deletions
@@ -723,6 +723,18 @@ OpenLayers.Layer = OpenLayers.Class({
        return this.getZoomForResolution(idealResolution);
    },
    
+    /** 
+     * Method: getDataExtent
+     * Calculates the max extent which includes all of the data for the layer.
+     *     This function is to be implemented by subclasses.
+     * 
+     * Returns:
+     * {<OpenLayers.Bounds>}
+     */
+    getDataExtent: function () {
+        //to be implemented by subclasses
+    },
+
    /**
     * APIMethod: getZoomForResolution
     *