Merge branch 'rename-sound-update-refs'

Conflicts:
	src/scratch/ScratchRuntime.as

src/scratch/ScratchObj.as

@@ -133,11 +133,19 @@ public class ScratchObj extends Sprite {
 	}
 
 	public function isCostumeNameUsed(name:String):Boolean {
-		var existingNames:Array = [];
+		name = name.toLowerCase();
 		for each (var c:ScratchCostume in costumes) {
-			existingNames.push(c.costumeName.toLowerCase());
+			if (c.costumeName.toLowerCase() == name) return true;
 		}
-		return (existingNames.indexOf(name.toLowerCase()) > -1);
+		return false;
+	}
+
+	public function isSoundNameUsed(name:String):Boolean {
+		name = name.toLowerCase();
+		for each (var s:ScratchSound in sounds) {
+			if (s.soundName.toLowerCase() == name) return true;
+		}
+		return false;
 	}
 
 	public function unusedCostumeName(baseName:String = ''):String {

src/scratch/ScratchRuntime.as

@@ -700,6 +700,17 @@ public class ScratchRuntime {
 		app.setSaveNeeded();
 	}
 
+    public function renameSound(s:ScratchSound, newName:String):void {
+        var obj:ScratchObj = app.viewedObj();
+        var oldName:String = s.soundName;
+        if (obj.isSoundNameUsed(newName)) return;
+        s.soundName = newName;
+        allUsesOfSoundDo(oldName, function (a:BlockArg):void {
+            a.setArgValue(newName);
+        });
+        app.setSaveNeeded();
+    }
+
 	public function clearRunFeedback():void {
 		if(app.editMode) {
 			for each (var stack:Block in allStacks()) {
@@ -808,6 +819,16 @@ public class ScratchRuntime {
 		return result;
 	}
 
+    public function allUsesOfSoundDo(soundName:String, f:Function):void {
+        for each (var stack:Block in app.viewedObj().scripts) {
+            stack.allBlocksDo(function (b:Block):void {
+                for each (var a:BlockArg in b.args) {
+                    if (a.menuName == 'sound' && a.argValue == soundName) f(a);
+                }
+            });
+        }
+    }
+
 	public function allCallsOf(callee:String, owner:ScratchObj):Array {
 		var result:Array = [];
 		for each (var stack:Block in owner.scripts) {

src/ui/parts/SoundsPart.as

@@ -201,7 +201,8 @@ public class SoundsPart extends UIPart {
 	private function nameChanged():void {
 		currentIndex = Math.min(currentIndex, app.viewedObj().sounds.length - 1);
 		var current:ScratchSound = app.viewedObj().sounds[currentIndex] as ScratchSound;
-		current.soundName = nameField.contents();
+		app.runtime.renameSound(current, nameField.contents());
+		nameField.setContents(current.soundName);
 		(listFrame.contents as MediaPane).refresh();
 	}