@Override
public void setSelector(Drawable sel) {
super.setSelector(sel);
if (frame != null) {
frame.setSelector(sel);
}
}
@Override
public void setVisibility(int visibility) {
if (frame != null) {
frame.setVisibility(visibility);
}
super.setVisibility(visibility);
}
@Override
public void setSelectionFromTop(int position, int offset) {
if (!isCalledFromSuper()) {
if (adapter == null) {
positionToSetWhenAdapterIsReady = position;
offsetToSetWhenAdapterIsReady = offset;
return;
}
if (areHeadersSticky) {
if (frame != null && frame.hasHeader()) {
offset += frame.getHeaderHeight();
}
}
position = adapter.translateAdapterPosition(position);
}
super.setSelectionFromTop(position, offset);
}
@Override
public void onClick(View v) {
if (frame.isHeader(v)) {
if (onHeaderClickListener != null) {
onHeaderClickListener.onHeaderClick(this, v, headerPosition, currentHeaderId, true);
}
}
}
@Override
public void setDrawSelectorOnTop(boolean onTop) {
super.setDrawSelectorOnTop(onTop);
drawSelectorOnTop = onTop;
if (frame != null) {
frame.setDrawSelectorOnTop(drawSelectorOnTop);
}
}
@SuppressWarnings("deprecation")
@Override
protected void onAttachedToWindow() {
super.onAttachedToWindow();
if (frame == null) {
ViewGroup parent = ((ViewGroup) getParent());
int listIndex = parent.indexOfChild(this);
parent.removeView(this);
int visibility = getVisibility();
setVisibility(View.VISIBLE);
frame = new StickyListHeadersListViewWrapper(getContext());
frame.setSelector(getSelector());
frame.setDrawSelectorOnTop(drawSelectorOnTop);
frame.setVisibility(visibility);
ViewGroup.MarginLayoutParams p = (MarginLayoutParams) getLayoutParams();
if (clippingToPadding) {
frame.setPadding(0, getPaddingTop(), 0, getPaddingBottom());
setPadding(getPaddingLeft(), 0, getPaddingRight(), 0);
}
ViewGroup.LayoutParams params =
new ViewGroup.LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
setLayoutParams(params);
frame.addView(this);
frame.setBackgroundDrawable(getBackground());
super.setBackgroundDrawable(null);
frame.setLayoutParams(p);
parent.addView(frame, listIndex);
}
}
@Override
@Deprecated
public void setBackgroundDrawable(Drawable background) {
if (frame != null) {
frame.setBackgroundDrawable(background);
} else {
super.setBackgroundDrawable(background);
}
}
@Override
public void smoothScrollToPositionFromTop(int position, int offset, int duration) {
if (!isCalledFromSuper()) {
if (adapter == null) {
positionToSetWhenAdapterIsReady = position;
offsetToSetWhenAdapterIsReady = offset;
return;
}
if (areHeadersSticky) {
if (frame != null && frame.hasHeader()) {
offset += frame.getHeaderHeight();
}
}
position = adapter.translateAdapterPosition(position);
}
try {
super.smoothScrollToPositionFromTop(position, offset, duration);
} catch (NoSuchMethodError e) {
// droid_utils: API < 11 TODO: update lib to fix this properly
}
}
@Override
protected void dispatchDraw(Canvas canvas) {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.FROYO) {
post(
new Runnable() {
@Override
public void run() {
scrollChanged(StickyListHeadersListView.super.getFirstVisiblePosition());
}
});
}
if (!drawingListUnderStickyHeader) {
canvas.clipRect(
0, Math.max(frame.getHeaderBottomPosition(), 0), canvas.getWidth(), canvas.getHeight());
}
super.dispatchDraw(canvas);
}
@Override
public void setAdapter(ListAdapter adapter) {
if (this.isInEditMode()) {
super.setAdapter(adapter);
return;
}
if (!clipToPaddingHasBeenSet) {
clippingToPadding = true;
}
if (adapter != null && !(adapter instanceof StickyListHeadersAdapter)) {
throw new IllegalArgumentException("Adapter must implement StickyListHeadersAdapter");
}
if (this.adapter != null) {
this.adapter.unregisterInternalDataSetObserver(dataSetChangedObserver);
this.adapter = null;
}
if (adapter != null) {
if (adapter instanceof SectionIndexer) {
this.adapter =
new StickyListHeadersSectionIndexerAdapterWrapper(
getContext(), (StickyListHeadersAdapter) adapter);
} else {
this.adapter =
new StickyListHeadersAdapterWrapper(getContext(), (StickyListHeadersAdapter) adapter);
}
this.adapter.setDivider(divider);
this.adapter.setDividerHeight(dividerHeight);
this.adapter.registerInternalDataSetObserver(dataSetChangedObserver);
setSelectionFromTop(positionToSetWhenAdapterIsReady, offsetToSetWhenAdapterIsReady);
}
currentHeaderId = null;
if (frame != null) {
frame.removeHeader();
}
updateHeaderVisibilities();
invalidate();
super.setAdapter(this.adapter);
}
@Override
public void onInvalidated() {
currentHeaderId = null;
frame.removeHeader();
}
private void scrollChanged(int firstVisibleItem) {
if (adapter == null || frame == null) {
return;
}
int adapterCount = adapter.getCount();
if (adapterCount == 0 || !areHeadersSticky) {
frame.removeHeader();
return;
}
final int listViewHeaderCount = getHeaderViewsCount();
firstVisibleItem = getFixedFirstVisibleItem(firstVisibleItem) - listViewHeaderCount;
if (firstVisibleItem < 0 || firstVisibleItem > adapterCount - 1) {
if (currentHeaderId != null || dataChanged) {
currentHeaderId = null;
frame.removeHeader();
updateHeaderVisibilities();
invalidate();
dataChanged = false;
}
return;
}
boolean headerHasChanged = false;
long newHeaderId = adapter.getHeaderId(firstVisibleItem);
if (currentHeaderId == null || currentHeaderId != newHeaderId) {
headerPosition = firstVisibleItem;
View header = adapter.getHeaderView(headerPosition, frame.removeHeader(), frame);
header.setOnClickListener(this);
frame.setHeader(header);
headerHasChanged = true;
}
currentHeaderId = newHeaderId;
int childCount = getChildCount();
if (childCount > 0) {
View viewToWatch = null;
int watchingChildDistance = Integer.MAX_VALUE;
boolean viewToWatchIsFooter = false;
for (int i = 0; i < childCount; i++) {
View child = getChildAt(i);
boolean childIsFooter = footerViews != null && footerViews.contains(child);
int childDistance;
if (clippingToPadding) {
childDistance = child.getTop() - getPaddingTop();
} else {
childDistance = child.getTop();
}
if (childDistance < 0) {
continue;
}
if (viewToWatch == null
|| (!viewToWatchIsFooter && !adapter.isHeader(viewToWatch))
|| ((childIsFooter || adapter.isHeader(child))
&& childDistance < watchingChildDistance)) {
viewToWatch = child;
viewToWatchIsFooter = childIsFooter;
watchingChildDistance = childDistance;
}
}
int headerHeight = frame.getHeaderHeight();
int headerBottomPosition = 0;
if (viewToWatch != null && (viewToWatchIsFooter || adapter.isHeader(viewToWatch))) {
if (firstVisibleItem == listViewHeaderCount
&& getChildAt(0).getTop() > 0
&& !clippingToPadding) {
headerBottomPosition = 0;
} else {
if (clippingToPadding) {
headerBottomPosition = Math.min(viewToWatch.getTop(), headerHeight + getPaddingTop());
headerBottomPosition =
headerBottomPosition < getPaddingTop()
? headerHeight + getPaddingTop()
: headerBottomPosition;
} else {
headerBottomPosition = Math.min(viewToWatch.getTop(), headerHeight);
headerBottomPosition = headerBottomPosition < 0 ? headerHeight : headerBottomPosition;
}
}
} else {
headerBottomPosition = headerHeight;
if (clippingToPadding) {
headerBottomPosition += getPaddingTop();
}
}
if (frame.getHeaderBottomPosition() != headerBottomPosition || headerHasChanged) {
frame.setHeaderBottomPosition(headerBottomPosition);
}
updateHeaderVisibilities();
}
}