+++ /dev/null
-/*
- * Copyright (C) 2011 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package android.support.v2.app;
-
-import android.os.Bundle;
-import android.os.Handler;
-import android.view.Gravity;
-import android.view.LayoutInflater;
-import android.view.View;
-import android.view.ViewGroup;
-import android.view.animation.AnimationUtils;
-import android.widget.AdapterView;
-import android.widget.FrameLayout;
-import android.widget.ListAdapter;
-import android.widget.ListView;
-import android.widget.TextView;
-
-/**
- * Static library support version of the framework's {@link android.app.ListFragment}.
- * Used to write apps that run on platforms prior to Android 3.0. When running
- * on Android 3.0 or above, this implementation is still used; it does not try
- * to switch to the framework's implementation. See the framework SDK
- * documentation for a class overview.
- */
-public class ListFragment extends Fragment {
- static final int INTERNAL_EMPTY_ID = 0x00ff0001;
-
- final private Handler mHandler = new Handler();
-
- final private Runnable mRequestFocus = new Runnable() {
- public void run() {
- mList.focusableViewAvailable(mList);
- }
- };
-
- final private AdapterView.OnItemClickListener mOnClickListener
- = new AdapterView.OnItemClickListener() {
- public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
- onListItemClick((ListView)parent, v, position, id);
- }
- };
-
- ListAdapter mAdapter;
- ListView mList;
- View mEmptyView;
- TextView mStandardEmptyView;
- View mProgressContainer;
- View mListContainer;
- boolean mSetEmptyText;
- boolean mListShown;
-
- public ListFragment() {
- }
-
- /**
- * Provide default implementation to return a simple list view. Subclasses
- * can override to replace with their own layout. If doing so, the
- * returned view hierarchy <em>must</em> have a ListView whose id
- * is {@link android.R.id#list android.R.id.list} and can optionally
- * have a sibling view id {@link android.R.id#empty android.R.id.empty}
- * that is to be shown when the list is empty.
- *
- * <p>If you are overriding this method with your own custom content,
- * consider including the standard layout {@link android.R.layout#list_content}
- * in your layout file, so that you continue to retain all of the standard
- * behavior of ListFragment. In particular, this is currently the only
- * way to have the built-in indeterminant progress state be shown.
- */
- @Override
- public View onCreateView(LayoutInflater inflater, ViewGroup container,
- Bundle savedInstanceState) {
- FrameLayout root = new FrameLayout(getActivity());
-
- TextView tv = new TextView(getActivity());
- tv.setId(INTERNAL_EMPTY_ID);
- tv.setGravity(Gravity.CENTER);
- root.addView(tv, new FrameLayout.LayoutParams(
- ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT));
-
- ListView lv = new ListView(getActivity());
- lv.setId(android.R.id.list);
- lv.setDrawSelectorOnTop(false);
- root.addView(lv, new FrameLayout.LayoutParams(
- ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT));
-
- ListView.LayoutParams lp = new ListView.LayoutParams(
- ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT);
- root.setLayoutParams(lp);
-
- return root;
- }
-
- /**
- * Attach to list view once Fragment is ready to run.
- */
- @Override
- public void onActivityCreated(Bundle savedInstanceState) {
- super.onActivityCreated(savedInstanceState);
- ensureList();
- }
-
- /**
- * Detach from list view.
- */
- @Override
- public void onDestroyView() {
- mHandler.removeCallbacks(mRequestFocus);
- mList = null;
- super.onDestroyView();
- }
-
- /**
- * This method will be called when an item in the list is selected.
- * Subclasses should override. Subclasses can call
- * getListView().getItemAtPosition(position) if they need to access the
- * data associated with the selected item.
- *
- * @param l The ListView where the click happened
- * @param v The view that was clicked within the ListView
- * @param position The position of the view in the list
- * @param id The row id of the item that was clicked
- */
- public void onListItemClick(ListView l, View v, int position, long id) {
- }
-
- /**
- * Provide the cursor for the list view.
- */
- 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);
- }
- }
- }
-
- /**
- * Set the currently selected list item to the specified
- * position with the adapter's data
- *
- * @param position
- */
- public void setSelection(int position) {
- ensureList();
- mList.setSelection(position);
- }
-
- /**
- * Get the position of the currently selected list item.
- */
- public int getSelectedItemPosition() {
- ensureList();
- return mList.getSelectedItemPosition();
- }
-
- /**
- * Get the cursor row ID of the currently selected list item.
- */
- public long getSelectedItemId() {
- ensureList();
- return mList.getSelectedItemId();
- }
-
- /**
- * Get the activity's list view widget.
- */
- public ListView getListView() {
- ensureList();
- return mList;
- }
-
- /**
- * The default content for a ListFragment has a TextView that can
- * be shown when the list is empty. If you would like to have it
- * shown, call this method to supply the text it should use.
- */
- 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 (!mSetEmptyText) {
- mList.setEmptyView(mStandardEmptyView);
- mSetEmptyText = true;
- }
- }
-
- /**
- * Control whether the list is being displayed. You can make it not
- * displayed if you are waiting for the initial data to show in it. During
- * this time an indeterminant progress indicator will be shown instead.
- *
- * <p>Applications do not normally need to use this themselves. The default
- * behavior of ListFragment is to start with the list not being shown, only
- * showing it once an adapter is given with {@link #setListAdapter(ListAdapter)}.
- * If the list at that point had not been shown, when it does get shown
- * it will be do without the user ever seeing the hidden state.
- *
- * @param shown If true, the list view is shown; if false, the progress
- * indicator. The initial value is true.
- */
- public void setListShown(boolean shown) {
- setListShown(shown, true);
- }
-
- /**
- * Like {@link #setListShown(boolean)}, but no animation is used when
- * transitioning from the previous state.
- */
- public void setListShownNoAnimation(boolean shown) {
- setListShown(shown, false);
- }
-
- /**
- * Control whether the list is being displayed. You can make it not
- * displayed if you are waiting for the initial data to show in it. During
- * this time an indeterminant progress indicator will be shown instead.
- *
- * @param shown If true, the list view is shown; if false, the progress
- * indicator. The initial value is true.
- * @param animate If true, an animation will be used to transition to the
- * new state.
- */
- 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(), android.R.anim.fade_out));
- mListContainer.startAnimation(AnimationUtils.loadAnimation(
- getActivity(), android.R.anim.fade_in));
- }
- mProgressContainer.setVisibility(View.GONE);
- mListContainer.setVisibility(View.VISIBLE);
- } else {
- if (animate) {
- mProgressContainer.startAnimation(AnimationUtils.loadAnimation(
- getActivity(), android.R.anim.fade_in));
- mListContainer.startAnimation(AnimationUtils.loadAnimation(
- getActivity(), android.R.anim.fade_out));
- }
- mProgressContainer.setVisibility(View.VISIBLE);
- mListContainer.setVisibility(View.GONE);
- }
- }
-
- /**
- * Get the ListAdapter associated with this activity's ListView.
- */
- public ListAdapter getListAdapter() {
- return mAdapter;
- }
-
- 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(INTERNAL_EMPTY_ID);
- if (mStandardEmptyView == null) {
- mEmptyView = root.findViewById(android.R.id.empty);
- }
- mProgressContainer = null; //root.findViewById(com.android.internal.R.id.progressContainer);
- mListContainer = null; //root.findViewById(com.android.internal.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);
- }
- }
- mListShown = true;
- mList.setOnItemClickListener(mOnClickListener);
- if (mAdapter != null) {
- setListAdapter(mAdapter);
- } else {
- // We are starting without an adapter, so assume we won't
- // have our data right away and start with the progress indicator.
- if (mProgressContainer != null) {
- setListShown(false, false);
- }
- }
- mHandler.post(mRequestFocus);
- }
-}
notaz.gp2x.de / android_pandora.git / blobdiff