give ModifyFeature control a vertexRenderIntent property. r=tschaub (closes #2955)

git-svn-id: http://svn.openlayers.org/trunk/openlayers@10938 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

lib/OpenLayers/Control/ModifyFeature.js

@@ -113,6 +113,15 @@ OpenLayers.Control.ModifyFeature = OpenLayers.Class(OpenLayers.Control, {
      * {Object} A symbolizer to be used for virtual vertices.
      */
     virtualStyle: null,
+    
+    /**
+     * APIProperty: vertexRenderIntent
+     * {String} The renderIntent to use for vertices. If no <virtualStyle> is
+     * provided, this renderIntent will also be used for virtual vertices, with
+     * a fillOpacity and strokeOpacity of 0.3. Default is null, which means
+     * that the layer's default style will be used for vertices.
+     */
+    vertexRenderIntent: null,
 
     /**
      * APIProperty: mode
@@ -193,11 +202,14 @@ OpenLayers.Control.ModifyFeature = OpenLayers.Class(OpenLayers.Control, {
      *     control.
      */
     initialize: function(layer, options) {
+        options = options || {};
         this.layer = layer;
         this.vertices = [];
         this.virtualVertices = [];
         this.virtualStyle = OpenLayers.Util.extend({},
-            this.layer.style || this.layer.styleMap.createSymbolizer());
+            this.layer.style ||
+            this.layer.styleMap.createSymbolizer(null, options.vertexRenderIntent)
+        );
         this.virtualStyle.fillOpacity = 0.3;
         this.virtualStyle.strokeOpacity = 0.3;
         this.deleteCodes = [46, 68];
@@ -622,6 +634,7 @@ OpenLayers.Control.ModifyFeature = OpenLayers.Class(OpenLayers.Control, {
             if(geometry.CLASS_NAME == "OpenLayers.Geometry.Point") {
                 vertex = new OpenLayers.Feature.Vector(geometry);
                 vertex._sketch = true;
+                vertex.renderIntent = control.vertexRenderIntent;
                 control.vertices.push(vertex);
             } else {
                 var numVert = geometry.components.length;
@@ -633,6 +646,7 @@ OpenLayers.Control.ModifyFeature = OpenLayers.Class(OpenLayers.Control, {
                     if(component.CLASS_NAME == "OpenLayers.Geometry.Point") {
                         vertex = new OpenLayers.Feature.Vector(component);
                         vertex._sketch = true;
+                        vertex.renderIntent = control.vertexRenderIntent;
                         control.vertices.push(vertex);
                     } else {
                         collectComponentVertices(component);

tests/Control/ModifyFeature.html

@@ -473,9 +473,13 @@
     }
 
     function test_onModificationStart(t) {
-        t.plan(1);
+        t.plan(5);
         var map = new OpenLayers.Map("map");
-        var layer = new OpenLayers.Layer.Vector();
+        var layer = new OpenLayers.Layer.Vector(null, {
+            styleMap: new OpenLayers.StyleMap({
+                "vertex": new OpenLayers.Style({foo: "bar"})
+            }, {extendDefault: false})
+        });
         map.addLayer(layer);
         var control = new OpenLayers.Control.ModifyFeature(layer);
         map.addControl(control);
@@ -483,14 +487,38 @@
         
         // make sure onModificationStart is called on feature selection
         var testFeature = new OpenLayers.Feature.Vector(
-            new OpenLayers.Geometry.Point(Math.random(), Math.random())
+            OpenLayers.Geometry.fromWKT("LINESTRING(3 4,10 50,20 25)")
         );
+        layer.addFeatures([testFeature]);
         control.onModificationStart = function(feature) {
             t.eq(feature.id, testFeature.id,
                  "onModificationStart called with the right feature");
         };
         control.selectFeature(testFeature);
         
+        // make sure styles are set correctly from default style
+        t.eq(control.virtualStyle, OpenLayers.Util.applyDefaults({
+            strokeOpacity: 0.3,
+            fillOpacity: 0.3
+        }, OpenLayers.Feature.Vector.style["default"]), "virtual style set correctly");
+        var vertex = layer.features[layer.features.length-1];
+        t.eq(vertex.renderIntent, null, "vertex style set correctly - uses default style");
+        control.unselectFeature(testFeature);
+        
+        // make sure styles are set correctly with vertexRenderIntent
+        control = new OpenLayers.Control.ModifyFeature(layer, {vertexRenderIntent: "vertex"});
+        map.addControl(control);
+        control.activate();
+        control.selectFeature(testFeature);
+        t.eq(control.virtualStyle, {
+            strokeOpacity: 0.3,
+            fillOpacity: 0.3,
+            foo: "bar"
+        }, "virtual style set correctly");
+        var vertex = layer.features[layer.features.length-1];
+        t.eq(vertex.renderIntent, "vertex", "vertex style set correctly - uses 'vertex' renderIntent");
+        control.unselectFeature(testFeature);
+        
         map.destroy();
     }