/**
* Shuffle list items given new float position.
*
* @param floatPos
*/
private boolean shuffleItems(int floatPos) {
// Log.d("mobeta", "float position: " + floatPos);
// Log.d("mobeta", "exp position: " + mExpDragPos);
// Log.d("mobeta", "first position: " + getFirstVisiblePosition() +
// " height: " + getChildAt(0).getHeight());
if (floatPos != mExpDragPos) {
// if we get here, the ListView is inconsistent with the
// floating view
// Log.d("mobeta",
// "collapsing="+mExpDragPos+" expanding="+floatPos);
collapseItem(mExpDragPos);
expandItem(floatPos);
// callback
if (mDragListener != null) {
final int numHeaders = getHeaderViewsCount();
mDragListener.drag(mExpDragPos - numHeaders, floatPos - numHeaders);
}
// update state
mExpDragPos = floatPos;
updateListState();
return true;
} else {
return false;
}
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
if ((mDragListener != null || mDropListener != null) && mDragView != null) {
int action = ev.getAction();
switch (action) {
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_CANCEL:
Rect r = mTempRect;
mDragView.getDrawingRect(r);
stopDragging();
if (mDropListener != null && mDragPos >= 0 && mDragPos < getCount()) {
mDropListener.drop(mFirstDragPos, mDragPos);
}
unExpandViews(false);
break;
case MotionEvent.ACTION_DOWN:
case MotionEvent.ACTION_MOVE:
int x = (int) ev.getX();
int y = (int) ev.getY();
dragView(x, y);
int itemnum = getItemForPosition(y);
if (itemnum >= 0) {
if (action == MotionEvent.ACTION_DOWN || itemnum != mDragPos) {
if (mDragListener != null) {
mDragListener.drag(mDragPos, itemnum);
}
mDragPos = itemnum;
doExpansion();
}
int speed = 0;
adjustScrollBounds(y);
if (y > mLowerBound) {
// scroll the list up a bit
speed = y > (mHeight + mLowerBound) / 2 ? 16 : 4;
} else if (y < mUpperBound) {
// scroll the list down a bit
speed = y < mUpperBound / 2 ? -16 : -4;
}
if (speed != 0) {
int ref = pointToPosition(0, mHeight / 2);
if (ref == AdapterView.INVALID_POSITION) {
// we hit a divider or an invisible view, check
// somewhere else
ref = pointToPosition(0, mHeight / 2 + getDividerHeight() + 64);
}
View v = getChildAt(ref - getFirstVisiblePosition());
if (v != null) {
int pos = v.getTop();
setSelectionFromTop(ref, pos - speed);
}
}
}
break;
}
return true;
}
return super.onTouchEvent(ev);
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
if (mGestureDetector != null) {
mGestureDetector.onTouchEvent(ev);
}
if ((mDragListener != null || mDropListener != null) && mDragView != null) {
int action = ev.getAction();
switch (action) {
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_CANCEL:
Rect r = mTempRect;
mDragView.getDrawingRect(r);
stopDragging();
if (mRemoveMode == SLIDE && ev.getX() > r.right * 3 / 4) {
if (mRemoveListener != null) {
mRemoveListener.remove(mSrcDragPos);
}
unExpandViews(true);
} else {
if (mDropListener != null && mDragPos >= 0 && mDragPos < getCount()) {
mDropListener.drop(mSrcDragPos, mDragPos);
}
unExpandViews(false);
}
break;
case MotionEvent.ACTION_DOWN:
case MotionEvent.ACTION_MOVE:
int x = (int) ev.getX();
int y = (int) ev.getY();
dragView(x, y);
int itemnum = getItemForPosition(y);
if (itemnum >= 0) {
if (action == MotionEvent.ACTION_DOWN || itemnum != mDragPos) {
if (mDragListener != null) {
mDragListener.drag(mDragPos, itemnum);
}
mDragPos = itemnum;
doExpansion();
}
int speed = 0;
adjustScrollBounds(y);
if (y > mLowerBound) {
// scroll the list up a bit
if (getLastVisiblePosition() < getCount() - 1) {
speed = y > (mHeight + mLowerBound) / 2 ? 16 : 4;
} else {
speed = 1;
}
} else if (y < mUpperBound) {
// scroll the list down a bit
speed = y < mUpperBound / 2 ? -16 : -4;
if (getFirstVisiblePosition() == 0 && getChildAt(0).getTop() >= getPaddingTop()) {
// if we're already at the top, don't try to scroll, because
// it causes the framework to do some extra drawing that messes
// up our animation
speed = 0;
}
}
if (speed != 0) {
smoothScrollBy(speed, 30);
}
}
break;
}
return true;
}
return super.onTouchEvent(ev);
}