| /* |
| * Copyright (C) 2013 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.server.am; |
| |
| import android.content.Context; |
| import android.os.Handler; |
| import android.os.Message; |
| import android.view.accessibility.AccessibilityManager; |
| import android.widget.Toast; |
| |
| import com.android.internal.R; |
| |
| /** |
| * Helper to manage showing/hiding a image to notify them that they are entering |
| * or exiting lock-to-app mode. |
| */ |
| public class LockTaskNotify { |
| private static final String TAG = "LockTaskNotify"; |
| |
| private final Context mContext; |
| private final H mHandler; |
| private AccessibilityManager mAccessibilityManager; |
| private Toast mLastToast; |
| |
| public LockTaskNotify(Context context) { |
| mContext = context; |
| mAccessibilityManager = (AccessibilityManager) |
| mContext.getSystemService(Context.ACCESSIBILITY_SERVICE); |
| mHandler = new H(); |
| } |
| |
| public void showToast(boolean isLocked) { |
| mHandler.obtainMessage(H.SHOW_TOAST, isLocked ? 1 : 0, 0 /* Not used */).sendToTarget(); |
| } |
| |
| public void handleShowToast(boolean isLocked) { |
| String text = mContext.getString(isLocked |
| ? R.string.lock_to_app_toast_locked : R.string.lock_to_app_toast); |
| if (!isLocked && mAccessibilityManager.isEnabled()) { |
| text = mContext.getString(R.string.lock_to_app_toast_accessible); |
| } |
| if (mLastToast != null) { |
| mLastToast.cancel(); |
| } |
| mLastToast = Toast.makeText(mContext, text, Toast.LENGTH_LONG); |
| mLastToast.show(); |
| } |
| |
| public void show(boolean starting) { |
| int showString = R.string.lock_to_app_exit; |
| if (starting) { |
| showString = R.string.lock_to_app_start; |
| } |
| Toast.makeText(mContext, mContext.getString(showString), Toast.LENGTH_LONG).show(); |
| } |
| |
| private final class H extends Handler { |
| private static final int SHOW_TOAST = 3; |
| |
| @Override |
| public void handleMessage(Message msg) { |
| switch(msg.what) { |
| case SHOW_TOAST: |
| handleShowToast(msg.arg1 != 0); |
| break; |
| } |
| } |
| } |
| } |