public virtual DisplayObjectX addChildAt(DisplayObjectX child, int index)
{
int numChildren = mChildren.Count;
if (index >= 0 && index <= numChildren)
{
if (child.parent == this)
{
setChildIndex(child, index); // avoids dispatching events
}
else
{
child.removeFromParent();
// 'splice' creates a temporary object, so we avoid it if it's not necessary
if (index == numChildren)
{
mChildren.Add(child);
}
else
{
mChildren.Insert(index, child);
}
child.setParent(this);
//child.dispatchEventWith(EventX.ADDED, true);
if (stage != null)
{
DisplayObjectContainerX container = child as DisplayObjectContainerX;
if (container != null)
{
//递归上去;
//container.simpleDispatch(EventX.ADDED_TO_STAGE);
}
else
{
child.simpleDispatch(EventX.ADDED_TO_STAGE);
}
}
}
return(child);
}
else
{
throw new RankException();
}
}
internal void setParent(DisplayObjectContainerX value)
{
DisplayObjectX ancestor = value;
while (ancestor != this && ancestor != null)
{
ancestor = ancestor.mParent;
}
if (ancestor == this)
{
throw new ArgumentException(
"An object cannot be added as a child to itself or one of its children (or children's children, etc.)");
}
else
{
mParent = value;
}
}
public Button(DisplayObjectX upState, string text = "", DisplayObjectX downState = null, TextFormat format = null)
{
//if (upState == null) throw new ErrorEvent("Texture cannot be null");
mParent = upState.parent;
mUpState = upState;
mDownState = downState != null ? downState : upState;
mBackground = upState;
mTextFormat = format;
mScaleWhenDown = 0.9f;
mAlphaWhenDisabled = 0.5f;
mEnabled = true;
mIsDown = false;
mUseHandCursor = true;
mTextBounds = new RectangleX(0, 0, upState.width, upState.height);
mContents = new DisplayObjectContainerX();
mContents.addChild(mBackground);
addChild(mContents);
//addEventListener(TouchEvent.TOUCH, onTouch);
addEventListener(MouseEventX.MOUSE_DOWN, onMouseDown);
if (text.Length > 0)
{
this.text = text;
}
this.x = upState.x;
this.y = upState.y;
upState.x = upState.y = 0;
if (mParent != null)
{
mParent.addChild(this);
}
}
public DisplayObjectX removeChildAt(int index, bool dispose = false)
{
if (index >= 0 && index < numChildren)
{
DisplayObjectX child = mChildren[index];
child.simpleDispatch(EventX.REMOVED);
if (stage != null)
{
DisplayObjectContainerX container = child as DisplayObjectContainerX;
if (container != null)
{
container.broadcastEventWith(EventX.REMOVED_FROM_STAGE);
}
else
{
child.simpleDispatch(EventX.REMOVED_FROM_STAGE);
}
}
child.setParent(null);
index = mChildren.IndexOf(child);
if (index >= 0)
{
mChildren.RemoveAt(index);
}
if (dispose)
{
child.dispose();
}
return(child);
}
else
{
throw new RankException("Invalid child index");
}
}