| /* |
| * Copyright (C) 2007 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.internal.policy.impl; |
| |
| import android.content.Context; |
| import android.content.Intent; |
| import android.media.AudioManager; |
| import android.telephony.TelephonyManager; |
| import android.view.KeyEvent; |
| import android.view.View; |
| import android.view.Gravity; |
| import android.widget.FrameLayout; |
| import android.util.AttributeSet; |
| |
| /** |
| * Base class for keyguard views. {@link #reset} is where you should |
| * reset the state of your view. Use the {@link KeyguardViewCallback} via |
| * {@link #getCallback()} to send information back (such as poking the wake lock, |
| * or finishing the keyguard). |
| * |
| * Handles intercepting of media keys that still work when the keyguard is |
| * showing. |
| */ |
| public abstract class KeyguardViewBase extends FrameLayout { |
| |
| private KeyguardViewCallback mCallback; |
| private AudioManager mAudioManager; |
| private TelephonyManager mTelephonyManager = null; |
| |
| public KeyguardViewBase(Context context) { |
| super(context); |
| |
| // drop shadow below status bar in keyguard too |
| mForegroundInPadding = false; |
| setForegroundGravity(Gravity.FILL_HORIZONTAL | Gravity.TOP); |
| setForeground( |
| context.getResources().getDrawable( |
| com.android.internal.R.drawable.title_bar_shadow)); |
| } |
| |
| // used to inject callback |
| void setCallback(KeyguardViewCallback callback) { |
| mCallback = callback; |
| } |
| |
| public KeyguardViewCallback getCallback() { |
| return mCallback; |
| } |
| |
| /** |
| * Called when you need to reset the state of your view. |
| */ |
| abstract public void reset(); |
| |
| /** |
| * Called when the screen turned off. |
| */ |
| abstract public void onScreenTurnedOff(); |
| |
| /** |
| * Called when the screen turned on. |
| */ |
| abstract public void onScreenTurnedOn(); |
| |
| /** |
| * Called when a key has woken the device to give us a chance to adjust our |
| * state according the the key. We are responsible for waking the device |
| * (by poking the wake lock) once we are ready. |
| * |
| * The 'Tq' suffix is per the documentation in {@link android.view.WindowManagerPolicy}. |
| * Be sure not to take any action that takes a long time; any significant |
| * action should be posted to a handler. |
| * |
| * @param keyCode The wake key, which may be relevant for configuring the |
| * keyguard. |
| */ |
| abstract public void wakeWhenReadyTq(int keyCode); |
| |
| /** |
| * Verify that the user can get past the keyguard securely. This is called, |
| * for example, when the phone disables the keyguard but then wants to launch |
| * something else that requires secure access. |
| * |
| * The result will be propogated back via {@link KeyguardViewCallback#keyguardDone(boolean)} |
| */ |
| abstract public void verifyUnlock(); |
| |
| /** |
| * Called before this view is being removed. |
| */ |
| abstract public void cleanUp(); |
| |
| @Override |
| public boolean dispatchKeyEvent(KeyEvent event) { |
| if (shouldEventKeepScreenOnWhileKeyguardShowing(event)) { |
| mCallback.pokeWakelock(); |
| } |
| |
| if (interceptMediaKey(event)) { |
| return true; |
| } |
| return super.dispatchKeyEvent(event); |
| } |
| |
| private boolean shouldEventKeepScreenOnWhileKeyguardShowing(KeyEvent event) { |
| if (event.getAction() != KeyEvent.ACTION_DOWN) { |
| return false; |
| } |
| switch (event.getKeyCode()) { |
| case KeyEvent.KEYCODE_DPAD_DOWN: |
| case KeyEvent.KEYCODE_DPAD_LEFT: |
| case KeyEvent.KEYCODE_DPAD_RIGHT: |
| case KeyEvent.KEYCODE_DPAD_UP: |
| return false; |
| default: |
| return true; |
| } |
| } |
| |
| /** |
| * Allows the media keys to work when the keyguard is showing. |
| * The media keys should be of no interest to the actual keyguard view(s), |
| * so intercepting them here should not be of any harm. |
| * @param event The key event |
| * @return whether the event was consumed as a media key. |
| */ |
| private boolean interceptMediaKey(KeyEvent event) { |
| final int keyCode = event.getKeyCode(); |
| if (event.getAction() == KeyEvent.ACTION_DOWN) { |
| switch (keyCode) { |
| case KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE: |
| /* Suppress PLAYPAUSE toggle when phone is ringing or |
| * in-call to avoid music playback */ |
| if (mTelephonyManager == null) { |
| mTelephonyManager = (TelephonyManager) getContext().getSystemService( |
| Context.TELEPHONY_SERVICE); |
| } |
| if (mTelephonyManager != null && |
| mTelephonyManager.getCallState() != TelephonyManager.CALL_STATE_IDLE) { |
| return true; // suppress key event |
| } |
| case KeyEvent.KEYCODE_HEADSETHOOK: |
| case KeyEvent.KEYCODE_MEDIA_STOP: |
| case KeyEvent.KEYCODE_MEDIA_NEXT: |
| case KeyEvent.KEYCODE_MEDIA_PREVIOUS: |
| case KeyEvent.KEYCODE_MEDIA_REWIND: |
| case KeyEvent.KEYCODE_MEDIA_FAST_FORWARD: { |
| Intent intent = new Intent(Intent.ACTION_MEDIA_BUTTON, null); |
| intent.putExtra(Intent.EXTRA_KEY_EVENT, event); |
| getContext().sendOrderedBroadcast(intent, null); |
| return true; |
| } |
| |
| case KeyEvent.KEYCODE_VOLUME_UP: |
| case KeyEvent.KEYCODE_VOLUME_DOWN: { |
| synchronized (this) { |
| if (mAudioManager == null) { |
| mAudioManager = (AudioManager) getContext().getSystemService( |
| Context.AUDIO_SERVICE); |
| } |
| } |
| // Volume buttons should only function for music. |
| if (mAudioManager.isMusicActive()) { |
| mAudioManager.adjustStreamVolume( |
| AudioManager.STREAM_MUSIC, |
| keyCode == KeyEvent.KEYCODE_VOLUME_UP |
| ? AudioManager.ADJUST_RAISE |
| : AudioManager.ADJUST_LOWER, |
| 0); |
| } |
| // Don't execute default volume behavior |
| return true; |
| } |
| } |
| } else if (event.getAction() == KeyEvent.ACTION_UP) { |
| switch (keyCode) { |
| case KeyEvent.KEYCODE_MUTE: |
| case KeyEvent.KEYCODE_HEADSETHOOK: |
| case KeyEvent.KEYCODE_MEDIA_PLAY_PAUSE: |
| case KeyEvent.KEYCODE_MEDIA_STOP: |
| case KeyEvent.KEYCODE_MEDIA_NEXT: |
| case KeyEvent.KEYCODE_MEDIA_PREVIOUS: |
| case KeyEvent.KEYCODE_MEDIA_REWIND: |
| case KeyEvent.KEYCODE_MEDIA_FAST_FORWARD: { |
| Intent intent = new Intent(Intent.ACTION_MEDIA_BUTTON, null); |
| intent.putExtra(Intent.EXTRA_KEY_EVENT, event); |
| getContext().sendOrderedBroadcast(intent, null); |
| return true; |
| } |
| } |
| } |
| return false; |
| } |
| |
| } |