| /* |
| * Copyright (C) 2010 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 com.android.gallery3d.app; |
| |
| import com.android.gallery3d.ui.GLView; |
| |
| import android.app.ActionBar; |
| import android.app.Activity; |
| import android.content.Intent; |
| import android.os.Bundle; |
| import android.view.Menu; |
| import android.view.MenuItem; |
| import android.view.View; |
| import android.view.WindowManager; |
| |
| abstract public class ActivityState { |
| public static final int FLAG_HIDE_ACTION_BAR = 1; |
| public static final int FLAG_HIDE_STATUS_BAR = 2; |
| |
| protected GalleryActivity mActivity; |
| protected Bundle mData; |
| protected int mFlags; |
| |
| protected ResultEntry mReceivedResults; |
| protected ResultEntry mResult; |
| |
| protected static class ResultEntry { |
| public int requestCode; |
| public int resultCode = Activity.RESULT_CANCELED; |
| public Intent resultData; |
| ResultEntry next; |
| } |
| |
| protected ActivityState() { |
| } |
| |
| protected void setContentPane(GLView content) { |
| mActivity.getGLRoot().setContentPane(content); |
| } |
| |
| void initialize(GalleryActivity activity, Bundle data) { |
| mActivity = activity; |
| mData = data; |
| } |
| |
| public Bundle getData() { |
| return mData; |
| } |
| |
| protected void onBackPressed() { |
| mActivity.getStateManager().finishState(this); |
| } |
| |
| protected void setStateResult(int resultCode, Intent data) { |
| if (mResult == null) return; |
| mResult.resultCode = resultCode; |
| mResult.resultData = data; |
| } |
| |
| protected void onSaveState(Bundle outState) { |
| } |
| |
| protected void onStateResult(int requestCode, int resultCode, Intent data) { |
| } |
| |
| protected void onCreate(Bundle data, Bundle storedState) { |
| } |
| |
| protected void onPause() { |
| } |
| |
| // should only be called by StateManager |
| void resume() { |
| Activity activity = (Activity) mActivity; |
| ActionBar actionBar = activity.getActionBar(); |
| if (actionBar != null) { |
| if ((mFlags & FLAG_HIDE_ACTION_BAR) != 0) { |
| actionBar.hide(); |
| } else { |
| actionBar.show(); |
| } |
| int stateCount = mActivity.getStateManager().getStateCount(); |
| actionBar.setDisplayOptions( |
| stateCount == 1 ? 0 : ActionBar.DISPLAY_HOME_AS_UP, |
| ActionBar.DISPLAY_HOME_AS_UP); |
| } |
| |
| activity.invalidateOptionsMenu(); |
| |
| if ((mFlags & FLAG_HIDE_STATUS_BAR) != 0) { |
| WindowManager.LayoutParams params = ((Activity) mActivity).getWindow().getAttributes(); |
| params.systemUiVisibility = View.STATUS_BAR_HIDDEN; |
| ((Activity) mActivity).getWindow().setAttributes(params); |
| } else { |
| WindowManager.LayoutParams params = ((Activity) mActivity).getWindow().getAttributes(); |
| params.systemUiVisibility = View.STATUS_BAR_VISIBLE; |
| ((Activity) mActivity).getWindow().setAttributes(params); |
| } |
| |
| ResultEntry entry = mReceivedResults; |
| if (entry != null) { |
| mReceivedResults = null; |
| onStateResult(entry.requestCode, entry.resultCode, entry.resultData); |
| } |
| onResume(); |
| } |
| |
| // a subclass of ActivityState should override the method to resume itself |
| protected void onResume() { |
| } |
| |
| protected boolean onCreateActionBar(Menu menu) { |
| return false; |
| } |
| |
| protected boolean onItemSelected(MenuItem item) { |
| return false; |
| } |
| |
| protected void onDestroy() { |
| } |
| } |