package org.holoeverywhere.app; import org.holoeverywhere.LayoutInflater; import org.holoeverywhere.R; import org.holoeverywhere.widget.ListView; import android.os.Bundle; import android.os.Handler; import android.view.View; import android.view.ViewGroup; import android.view.animation.AnimationUtils; import android.widget.AdapterView; import android.widget.ListAdapter; import android.widget.TextView; public class ListFragment extends Fragment { private ListAdapter mAdapter; private CharSequence mEmptyText; private View mEmptyView; final private Handler mHandler = new Handler(); private ListView mList; private View mListContainer; private boolean mListShown; final private AdapterView.OnItemClickListener mOnClickListener = new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View v, int position, long id) { onListItemClick((ListView) parent, v, position, id); } }; private View mProgressContainer; final private Runnable mRequestFocus = new Runnable() { @Override public void run() { mList.focusableViewAvailable(mList); } }; private TextView mStandardEmptyView; private void ensureList() { if (mList != null) { return; } View root = getView(); if (root == null) { throw new IllegalStateException("Content view not yet created"); } if (root instanceof ListView) { mList = (ListView) root; } else { mStandardEmptyView = (TextView) root .findViewById(R.id.internalEmpty); if (mStandardEmptyView == null) { mEmptyView = root.findViewById(android.R.id.empty); } else { mStandardEmptyView.setVisibility(View.GONE); } mProgressContainer = root.findViewById(R.id.progressContainer); mListContainer = root.findViewById(R.id.listContainer); View rawListView = root.findViewById(android.R.id.list); if (!(rawListView instanceof ListView)) { if (rawListView == null) { throw new RuntimeException( "Your content must have a ListView whose id attribute is " + "'android.R.id.list'"); } throw new RuntimeException( "Content has view with id attribute 'android.R.id.list' " + "that is not a ListView class"); } mList = (ListView) rawListView; if (mEmptyView != null) { mList.setEmptyView(mEmptyView); } else if (mEmptyText != null) { mStandardEmptyView.setText(mEmptyText); mList.setEmptyView(mStandardEmptyView); } } mListShown = true; mList.setOnItemClickListener(mOnClickListener); if (mAdapter != null) { ListAdapter adapter = mAdapter; mAdapter = null; setListAdapter(adapter); } else { if (mProgressContainer != null) { setListShown(false, false); } } mHandler.post(mRequestFocus); } protected View getEmptyView() { return mEmptyView; } public ListAdapter getListAdapter() { return mAdapter; } public ListView getListView() { ensureList(); return mList; } public long getSelectedItemId() { ensureList(); return mList.getSelectedItemId(); } public int getSelectedItemPosition() { ensureList(); return mList.getSelectedItemPosition(); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { return inflater.inflate(R.layout.list_content, container, false); } @Override public void onDestroyView() { mHandler.removeCallbacks(mRequestFocus); mList = null; mListShown = false; mEmptyView = mProgressContainer = mListContainer = null; mStandardEmptyView = null; super.onDestroyView(); } public void onListItemClick(ListView l, View v, int position, long id) { } @Override public void onViewCreated(View view, Bundle savedInstanceState) { super.onViewCreated(view, savedInstanceState); ensureList(); } public void setEmptyText(CharSequence text) { ensureList(); if (mStandardEmptyView == null) { throw new IllegalStateException( "Can't be used with a custom content view"); } mStandardEmptyView.setText(text); if (mEmptyText == null) { mList.setEmptyView(mStandardEmptyView); } mEmptyText = text; } public void setListAdapter(ListAdapter adapter) { boolean hadAdapter = mAdapter != null; mAdapter = adapter; if (mList != null) { mList.setAdapter(adapter); if (!mListShown && !hadAdapter) { // The list was hidden, and previously didn't have an // adapter. It is now time to show it. setListShown(true, getView().getWindowToken() != null); } } } public void setListShown(boolean shown) { setListShown(shown, true); } private void setListShown(boolean shown, boolean animate) { ensureList(); if (mProgressContainer == null) { throw new IllegalStateException( "Can't be used with a custom content view"); } if (mListShown == shown) { return; } mListShown = shown; if (shown) { if (animate) { mProgressContainer.startAnimation(AnimationUtils.loadAnimation( getActivity(), R.anim.fade_out)); mListContainer.startAnimation(AnimationUtils.loadAnimation( getActivity(), R.anim.fade_in)); } else { mProgressContainer.clearAnimation(); mListContainer.clearAnimation(); } mProgressContainer.setVisibility(View.GONE); mListContainer.setVisibility(View.VISIBLE); } else { if (animate) { mProgressContainer.startAnimation(AnimationUtils.loadAnimation( getActivity(), R.anim.fade_in)); mListContainer.startAnimation(AnimationUtils.loadAnimation( getActivity(), R.anim.fade_out)); } else { mProgressContainer.clearAnimation(); mListContainer.clearAnimation(); } mProgressContainer.setVisibility(View.VISIBLE); mListContainer.setVisibility(View.GONE); } } public void setListShownNoAnimation(boolean shown) { setListShown(shown, false); } public void setSelection(int position) { ensureList(); mList.setSelection(position); } }