@Override
public void onScroll(AbsListView view, int firstVisible, int visibleCount, int totalCount) {
if (mObjects == null) return;
boolean loadMore = /* maybe add a padding */
firstVisible + visibleCount >= mObjects.getTotalQueried();
if (loadMore) {
mLoader.cancelLoad();
if (getActivity() instanceof Filterable) {
Filterable context = (Filterable) getActivity();
if (context != null) {
List<String> filterTypes = new ArrayList<String>();
for (int x = 0; x < context.getFilterTypes().length; x++) {
if (context.getFilterCheckboxes()[x]) {
Log.w(TAG, "adding " + context.getFilterTypes()[x]);
filterTypes.add(context.getFilterTypes()[x]);
}
}
mLoader =
mObjects.queryLaterObjects(
getActivity(),
mFeedUri,
totalCount,
filterTypes.toArray(new String[filterTypes.size()]));
}
} else {
mLoader = mObjects.queryLaterObjects(getActivity(), mFeedUri, totalCount, null);
}
}
}
@Override
public void onLoadFinished(Loader<Cursor> loader, Cursor cursor) {
// the mObjects field is accessed by the ui thread as well
if (mObjects == null) {
mObjects = new ObjectListCursorAdapter(getActivity(), cursor);
setListAdapter(mObjects);
} else {
mObjects.changeCursor(cursor);
}
Log.w(TAG, "setting adapter");
}
@Override
public Loader<Cursor> onCreateLoader(int id, Bundle args) {
String[] projection = new String[] {DbObject._ID};
List<String> filterTypes = new ArrayList<String>();
filterTypes.add(AppObj.TYPE);
filterTypes.add(AppStateObj.TYPE);
mLoader =
ObjectListCursorAdapter.queryObjects(
getActivity(),
mFeedUri,
projection,
filterTypes.toArray(new String[filterTypes.size()]));
return mLoader;
}
@Override
public void onDestroy() {
super.onDestroy();
if (mLoader != null) {
mLoader.cancelLoad();
}
// the mObjects field is accessed by the background loader
synchronized (this) {
if (mObjects != null) {
((ObjectListCursorAdapter) mObjects).closeCursor();
}
}
}
void showMenuForObj(int position) {
// this first cursor is the internal one
Cursor cursor = (Cursor) mObjects.getItem(position);
long objId = cursor.getLong(0);
DbObj obj = App.instance().getMusubi().objForId(objId);
FragmentTransaction ft = getFragmentManager().beginTransaction();
Fragment prev = getFragmentManager().findFragmentByTag("dialog");
if (prev != null) {
ft.remove(prev);
}
ft.addToBackStack(null);
// Create and show the dialog.
DialogFragment newFragment = ObjMenuDialogFragment.newInstance(obj);
newFragment.show(ft, "dialog");
}