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@@ -1,347 +0,0 @@
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/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.internal.policy.impl;
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import android.app.ActivityManager;
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import android.app.Dialog;
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import android.app.StatusBarManager;
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import android.content.ActivityNotFoundException;
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import android.content.BroadcastReceiver;
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import android.content.Context;
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import android.content.Intent;
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import android.content.IntentFilter;
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import android.content.pm.ActivityInfo;
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import android.content.pm.PackageManager;
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import android.content.pm.ResolveInfo;
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import android.graphics.drawable.Drawable;
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import android.os.Bundle;
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import android.os.Handler;
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import android.util.Log;
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import android.view.KeyEvent;
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import android.view.SoundEffectConstants;
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import android.view.View;
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import android.view.Window;
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import android.view.WindowManager;
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import android.view.View.OnClickListener;
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import android.widget.TextView;
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import java.util.List;
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public class RecentApplicationsDialog extends Dialog implements OnClickListener {
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// Elements for debugging support
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// private static final String LOG_TAG = "RecentApplicationsDialog";
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private static final boolean DBG_FORCE_EMPTY_LIST = false;
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static private StatusBarManager sStatusBar;
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private static final int NUM_BUTTONS = 8;
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private static final int MAX_RECENT_TASKS = NUM_BUTTONS * 2; // allow for some discards
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final TextView[] mIcons = new TextView[NUM_BUTTONS];
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View mNoAppsText;
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IntentFilter mBroadcastIntentFilter = new IntentFilter(Intent.ACTION_CLOSE_SYSTEM_DIALOGS);
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class RecentTag {
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ActivityManager.RecentTaskInfo info;
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Intent intent;
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}
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Handler mHandler = new Handler();
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Runnable mCleanup = new Runnable() {
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public void run() {
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// dump extra memory we're hanging on to
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for (TextView icon: mIcons) {
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icon.setCompoundDrawables(null, null, null, null);
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icon.setTag(null);
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}
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}
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};
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public RecentApplicationsDialog(Context context) {
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super(context, com.android.internal.R.style.Theme_Dialog_RecentApplications);
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}
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/**
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* We create the recent applications dialog just once, and it stays around (hidden)
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* until activated by the user.
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*
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* @see PhoneWindowManager#showRecentAppsDialog
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*/
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@Override
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protected void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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Context context = getContext();
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if (sStatusBar == null) {
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sStatusBar = (StatusBarManager)context.getSystemService(Context.STATUS_BAR_SERVICE);
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}
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Window window = getWindow();
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window.requestFeature(Window.FEATURE_NO_TITLE);
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window.setType(WindowManager.LayoutParams.TYPE_RECENTS_OVERLAY);
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window.setFlags(WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM,
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WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM);
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window.setTitle("Recents");
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setContentView(com.android.internal.R.layout.recent_apps_dialog);
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final WindowManager.LayoutParams params = window.getAttributes();
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params.width = WindowManager.LayoutParams.MATCH_PARENT;
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params.height = WindowManager.LayoutParams.MATCH_PARENT;
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window.setAttributes(params);
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window.setFlags(0, WindowManager.LayoutParams.FLAG_DIM_BEHIND);
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mIcons[0] = (TextView)findViewById(com.android.internal.R.id.button0);
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mIcons[1] = (TextView)findViewById(com.android.internal.R.id.button1);
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mIcons[2] = (TextView)findViewById(com.android.internal.R.id.button2);
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mIcons[3] = (TextView)findViewById(com.android.internal.R.id.button3);
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mIcons[4] = (TextView)findViewById(com.android.internal.R.id.button4);
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mIcons[5] = (TextView)findViewById(com.android.internal.R.id.button5);
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mIcons[6] = (TextView)findViewById(com.android.internal.R.id.button6);
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mIcons[7] = (TextView)findViewById(com.android.internal.R.id.button7);
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mNoAppsText = findViewById(com.android.internal.R.id.no_applications_message);
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for (TextView b: mIcons) {
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b.setOnClickListener(this);
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}
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}
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@Override
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public boolean onKeyDown(int keyCode, KeyEvent event) {
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if (keyCode == KeyEvent.KEYCODE_TAB) {
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// Ignore all meta keys other than SHIFT. The app switch key could be a
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// fallback action chorded with ALT, META or even CTRL depending on the key map.
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// DPad navigation is handled by the ViewRoot elsewhere.
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final boolean backward = event.isShiftPressed();
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final int numIcons = mIcons.length;
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int numButtons = 0;
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while (numButtons < numIcons && mIcons[numButtons].getVisibility() == View.VISIBLE) {
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numButtons += 1;
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}
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if (numButtons != 0) {
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int nextFocus = backward ? numButtons - 1 : 0;
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for (int i = 0; i < numButtons; i++) {
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if (mIcons[i].hasFocus()) {
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if (backward) {
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nextFocus = (i + numButtons - 1) % numButtons;
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} else {
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nextFocus = (i + 1) % numButtons;
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}
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break;
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}
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}
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final int direction = backward ? View.FOCUS_BACKWARD : View.FOCUS_FORWARD;
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if (mIcons[nextFocus].requestFocus(direction)) {
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mIcons[nextFocus].playSoundEffect(
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SoundEffectConstants.getContantForFocusDirection(direction));
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}
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}
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// The dialog always handles the key to prevent the ViewRoot from
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// performing the default navigation itself.
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return true;
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}
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return super.onKeyDown(keyCode, event);
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}
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/**
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* Dismiss the dialog and switch to the selected application.
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*/
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public void dismissAndSwitch() {
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final int numIcons = mIcons.length;
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RecentTag tag = null;
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for (int i = 0; i < numIcons; i++) {
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if (mIcons[i].getVisibility() != View.VISIBLE) {
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break;
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}
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if (i == 0 || mIcons[i].hasFocus()) {
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tag = (RecentTag) mIcons[i].getTag();
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if (mIcons[i].hasFocus()) {
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break;
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}
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}
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}
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if (tag != null) {
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switchTo(tag);
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}
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dismiss();
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}
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/**
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* Handler for user clicks. If a button was clicked, launch the corresponding activity.
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*/
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public void onClick(View v) {
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for (TextView b: mIcons) {
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if (b == v) {
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RecentTag tag = (RecentTag)b.getTag();
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switchTo(tag);
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break;
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}
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}
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dismiss();
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}
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private void switchTo(RecentTag tag) {
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if (tag.info.id >= 0) {
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// This is an active task; it should just go to the foreground.
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final ActivityManager am = (ActivityManager)
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getContext().getSystemService(Context.ACTIVITY_SERVICE);
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am.moveTaskToFront(tag.info.id, ActivityManager.MOVE_TASK_WITH_HOME);
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} else if (tag.intent != null) {
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tag.intent.addFlags(Intent.FLAG_ACTIVITY_LAUNCHED_FROM_HISTORY
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| Intent.FLAG_ACTIVITY_TASK_ON_HOME);
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try {
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getContext().startActivity(tag.intent);
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} catch (ActivityNotFoundException e) {
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Log.w("Recent", "Unable to launch recent task", e);
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}
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}
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}
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/**
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* Set up and show the recent activities dialog.
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*/
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@Override
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public void onStart() {
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super.onStart();
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reloadButtons();
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if (sStatusBar != null) {
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sStatusBar.disable(StatusBarManager.DISABLE_EXPAND);
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}
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// receive broadcasts
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getContext().registerReceiver(mBroadcastReceiver, mBroadcastIntentFilter);
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mHandler.removeCallbacks(mCleanup);
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}
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/**
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* Dismiss the recent activities dialog.
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*/
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@Override
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public void onStop() {
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super.onStop();
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if (sStatusBar != null) {
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sStatusBar.disable(StatusBarManager.DISABLE_NONE);
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}
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// stop receiving broadcasts
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getContext().unregisterReceiver(mBroadcastReceiver);
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mHandler.postDelayed(mCleanup, 100);
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}
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/**
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* Reload the 6 buttons with recent activities
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*/
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private void reloadButtons() {
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final Context context = getContext();
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final PackageManager pm = context.getPackageManager();
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final ActivityManager am = (ActivityManager)
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context.getSystemService(Context.ACTIVITY_SERVICE);
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final List<ActivityManager.RecentTaskInfo> recentTasks =
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am.getRecentTasks(MAX_RECENT_TASKS, ActivityManager.RECENT_IGNORE_UNAVAILABLE);
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ActivityInfo homeInfo =
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new Intent(Intent.ACTION_MAIN).addCategory(Intent.CATEGORY_HOME)
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.resolveActivityInfo(pm, 0);
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IconUtilities iconUtilities = new IconUtilities(getContext());
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// Performance note: Our android performance guide says to prefer Iterator when
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// using a List class, but because we know that getRecentTasks() always returns
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// an ArrayList<>, we'll use a simple index instead.
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int index = 0;
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int numTasks = recentTasks.size();
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for (int i = 0; i < numTasks && (index < NUM_BUTTONS); ++i) {
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final ActivityManager.RecentTaskInfo info = recentTasks.get(i);
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// for debug purposes only, disallow first result to create empty lists
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if (DBG_FORCE_EMPTY_LIST && (i == 0)) continue;
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Intent intent = new Intent(info.baseIntent);
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if (info.origActivity != null) {
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intent.setComponent(info.origActivity);
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}
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// Skip the current home activity.
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if (homeInfo != null) {
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if (homeInfo.packageName.equals(
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intent.getComponent().getPackageName())
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&& homeInfo.name.equals(
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intent.getComponent().getClassName())) {
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continue;
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}
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}
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intent.setFlags((intent.getFlags()&~Intent.FLAG_ACTIVITY_RESET_TASK_IF_NEEDED)
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| Intent.FLAG_ACTIVITY_NEW_TASK);
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final ResolveInfo resolveInfo = pm.resolveActivity(intent, 0);
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if (resolveInfo != null) {
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final ActivityInfo activityInfo = resolveInfo.activityInfo;
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final String title = activityInfo.loadLabel(pm).toString();
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Drawable icon = activityInfo.loadIcon(pm);
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if (title != null && title.length() > 0 && icon != null) {
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final TextView tv = mIcons[index];
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tv.setText(title);
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icon = iconUtilities.createIconDrawable(icon);
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tv.setCompoundDrawables(null, icon, null, null);
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RecentTag tag = new RecentTag();
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tag.info = info;
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tag.intent = intent;
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tv.setTag(tag);
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tv.setVisibility(View.VISIBLE);
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tv.setPressed(false);
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tv.clearFocus();
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++index;
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}
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}
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}
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// handle the case of "no icons to show"
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mNoAppsText.setVisibility((index == 0) ? View.VISIBLE : View.GONE);
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// hide the rest
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for (; index < NUM_BUTTONS; ++index) {
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mIcons[index].setVisibility(View.GONE);
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}
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}
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/**
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* This is the listener for the ACTION_CLOSE_SYSTEM_DIALOGS intent. It's an indication that
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* we should close ourselves immediately, in order to allow a higher-priority UI to take over
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* (e.g. phone call received).
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*/
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private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
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@Override
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public void onReceive(Context context, Intent intent) {
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String action = intent.getAction();
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if (Intent.ACTION_CLOSE_SYSTEM_DIALOGS.equals(action)) {
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String reason = intent.getStringExtra(PhoneWindowManager.SYSTEM_DIALOG_REASON_KEY);
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if (! PhoneWindowManager.SYSTEM_DIALOG_REASON_RECENT_APPS.equals(reason)) {
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dismiss();
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}
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}
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}
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};
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}
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Adrian Roos