Modify drag handler for easier subclassing. Thanks for the team effort on this one (closes #827).

git-svn-id: http://svn.openlayers.org/trunk/openlayers@4096 dc9f47b5-9b13-0410-9fdd-eb0c1a62fdaf

tests/Handler/test_Drag.html

@@ -246,6 +246,63 @@
         
 
         
+    }
+
+    function test_Handler_Drag_submethods(t) {
+        t.plan(4);
+        
+        var map = new OpenLayers.Map('map', {controls: []});
+
+        var control = new OpenLayers.Control();
+        map.addControl(control);
+        
+
+        var handler = new OpenLayers.Handler.Drag(control, {});
+        // set test events
+        var events = ["down", "move", "up", "out"];
+        var testEvents = {};
+        var type, px;
+        for(var i=0; i<events.length; ++i) {
+            type = events[i];
+            px = new OpenLayers.Pixel(Math.random(), Math.random());
+            testEvents[type] = {xy: px};
+            setMethod(type);
+        }
+        function setMethod(type) {
+            handler[type] = function(evt) {
+                t.ok(evt.xy.x == testEvents[type].xy.x &&
+                     evt.xy.y == testEvents[type].xy.y,
+                     "handler." + type + " called with the right event");
+            }
+        }
+        handler.activate();
+        
+        // test mousedown
+        handler.checkModifiers = function(evt) {
+            return true;
+        }
+        var oldIsLeftClick = OpenLayers.Event.isLeftClick;
+        OpenLayers.Event.isLeftClick = function(evt) {
+            return true;
+        }
+        map.events.triggerEvent("mousedown", testEvents.down);
+        OpenLayers.Event.isLeftClick = oldIsLeftClick;
+
+        // test mousemove
+        map.events.triggerEvent("mousemove", testEvents.move);
+        
+        // test mouseup
+        map.events.triggerEvent("mouseup", testEvents.up);
+        
+        // test mouseout
+        var oldMouseLeft = OpenLayers.Util.mouseLeft;
+        OpenLayers.Util.mouseLeft = function() {
+            return true;
+        };
+        handler.started = true;
+        map.events.triggerEvent("mouseout", testEvents.out);
+        OpenLayers.Util.mouseLeft = oldMouseLeft;
+        
     }
 
     function test_Handler_Drag_deactivate(t) {