public void handleMessage(Message m) {
if (mSelectionBounds == null) return;
addView(mSelectionDragLayer);
drawSelectionHandles();
int contentHeight =
(int) Math.ceil(getDensityDependentValue(getContentHeight(), mContext));
// Update Layout Params
ViewGroup.LayoutParams layerParams = mSelectionDragLayer.getLayoutParams();
layerParams.height = contentHeight;
layerParams.width = mContentWidth;
mSelectionDragLayer.setLayoutParams(layerParams);
}
/**
* Creates the selection layer.
*
* @param context
*/
protected void createSelectionLayer(Context context) {
LayoutInflater inflater =
(LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
mSelectionDragLayer = (DragLayer) inflater.inflate(R.layout.selection_drag_layer, null);
// Make sure it's filling parent
mDragController = new DragController(context);
mDragController.setDragListener(this);
mDragController.addDropTarget(mSelectionDragLayer);
mSelectionDragLayer.setDragController(mDragController);
mStartSelectionHandle = (ImageView) mSelectionDragLayer.findViewById(R.id.startHandle);
mStartSelectionHandle.setTag(new Integer(SELECTION_START_HANDLE));
mEndSelectionHandle = (ImageView) mSelectionDragLayer.findViewById(R.id.endHandle);
mEndSelectionHandle.setTag(new Integer(SELECTION_END_HANDLE));
OnTouchListener handleTouchListener =
new OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
boolean handledHere = false;
final int action = event.getAction();
// Down event starts drag for handle.
if (action == MotionEvent.ACTION_DOWN) {
handledHere = startDrag(v);
mLastTouchedSelectionHandle = (Integer) v.getTag();
}
return handledHere;
}
};
mStartSelectionHandle.setOnTouchListener(handleTouchListener);
mEndSelectionHandle.setOnTouchListener(handleTouchListener);
}
/**
* Checks to see if this view is in selection mode.
*
* @return
*/
public boolean isInSelectionMode() {
return mSelectionDragLayer.getParent() != null;
}