@Override
public void draw(Canvas canvas) {
super.draw(canvas);
if (mFastScroller != null) {
final int scrollY = getScrollY();
if (scrollY != 0) {
int restoreCount = canvas.save();
canvas.translate(0, scrollY);
mFastScroller.draw(canvas);
canvas.restoreToCount(restoreCount);
} else {
mFastScroller.draw(canvas);
}
}
}
@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
if (mFastScroller != null) {
mFastScroller.onSizeChanged(w, h, oldw, oldh);
}
}
@Override
public boolean isFastScrollAlwaysVisible() {
if (mForceFastScrollAlwaysVisibleDisable) {
return false;
}
return mFastScrollEnabled && mFastScroller.isAlwaysShowEnabled();
}
@Override
public void setVerticalScrollbarPosition(int position) {
mVerticalScrollbarPosition = position;
if (mFastScroller != null) {
mFastScroller.setScrollbarPosition(position);
}
recomputePaddingFromScroller();
}
@Override
protected void onLayout(boolean changed, int l, int t, int r, int b) {
final int mOldItemCount = getCount();
super.onLayout(changed, l, t, r, b);
final int mItemCount = getCount();
if (mFastScroller != null && mItemCount != mOldItemCount) {
mFastScroller.onItemCountChanged(mOldItemCount, mItemCount);
}
}
@Override
public boolean onInterceptTouchEvent(MotionEvent ev) {
if (!mIsAttached) {
return false;
}
if (mFastScroller != null && mFastScroller.onInterceptTouchEvent(ev)) {
return true;
}
return super.onInterceptTouchEvent(ev);
}
@Override
public int getVerticalScrollbarWidth() {
mForceFastScrollAlwaysVisibleDisable = true;
final int superWidth = super.getVerticalScrollbarWidth();
mForceFastScrollAlwaysVisibleDisable = false;
if (isFastScrollAlwaysVisible()) {
return Math.max(superWidth, mFastScroller.getWidth());
}
return superWidth;
}
void invokeOnItemScrollListener() {
final int mFirstPosition = getFirstVisiblePosition();
final int mItemCount = getCount();
if (mFastScroller != null) {
mFastScroller.onScroll(this, mFirstPosition, getChildCount(), mItemCount);
}
if (mOnScrollListener != null) {
mOnScrollListener.onScroll(this, mFirstPosition, getChildCount(), mItemCount);
}
onScrollChanged(0, 0, 0, 0);
}
@Override
public boolean onTouchEvent(MotionEvent ev) {
if (!isEnabled()) {
return isClickable() || isLongClickable();
}
if (!mIsAttached) {
return false;
}
if (mFastScroller != null && mFastScroller.onTouchEvent(ev)) {
return true;
}
return super.onTouchEvent(ev);
}
@Override
public void setFastScrollEnabled(boolean enabled) {
mFastScrollEnabled = enabled;
if (enabled) {
if (mFastScroller == null) {
mFastScroller = new FastScroller(getContext(), this);
}
} else {
if (mFastScroller != null) {
mFastScroller.stop();
mFastScroller = null;
}
}
}
@Override
public void setFastScrollAlwaysVisible(boolean alwaysShow) {
if (alwaysShow && !mFastScrollEnabled) {
setFastScrollEnabled(true);
}
if (mFastScroller != null) {
mFastScroller.setAlwaysShow(alwaysShow);
}
try {
Method method = View.class.getDeclaredMethod("computeOpaqueFlags");
method.setAccessible(true);
method.invoke(this);
method = View.class.getDeclaredMethod("recomputePadding");
method.setAccessible(true);
method.invoke(this);
} catch (Exception e) {
}
if (alwaysShow) {
setPaddingFromScroller(true);
}
}
protected boolean isVerticalScrollBarHidden() {
return mFastScroller != null && mFastScroller.isVisible();
}
@Override
public void onInvalidated() {
if (mFastScroller != null) {
mFastScroller.onSectionsChanged();
}
}
