| /* |
| * 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 com.android.keyguard; |
| |
| import android.animation.Animator; |
| import android.animation.AnimatorListenerAdapter; |
| import android.animation.ObjectAnimator; |
| import android.content.ContentResolver; |
| import android.content.Context; |
| import android.os.BatteryManager; |
| import android.os.Handler; |
| import android.os.Looper; |
| import android.os.SystemClock; |
| import android.text.TextUtils; |
| import android.util.AttributeSet; |
| import android.util.MutableInt; |
| import android.view.View; |
| import android.widget.TextView; |
| |
| import java.lang.ref.WeakReference; |
| |
| import com.android.internal.widget.LockPatternUtils; |
| |
| /*** |
| * Manages a number of views inside of the given layout. See below for a list of widgets. |
| */ |
| class KeyguardMessageArea extends TextView { |
| /** Handler token posted with accessibility announcement runnables. */ |
| private static final Object ANNOUNCE_TOKEN = new Object(); |
| |
| /** |
| * Delay before speaking an accessibility announcement. Used to prevent |
| * lift-to-type from interrupting itself. |
| */ |
| private static final long ANNOUNCEMENT_DELAY = 250; |
| |
| static final int SECURITY_MESSAGE_DURATION = 5000; |
| protected static final int FADE_DURATION = 750; |
| |
| private static final String TAG = "KeyguardMessageArea"; |
| |
| // is the bouncer up? |
| boolean mShowingBouncer = false; |
| |
| KeyguardUpdateMonitor mUpdateMonitor; |
| |
| // Timeout before we reset the message to show charging/owner info |
| long mTimeout = SECURITY_MESSAGE_DURATION; |
| |
| private Handler mHandler; |
| |
| CharSequence mMessage; |
| boolean mShowingMessage; |
| private CharSequence mSeparator; |
| private LockPatternUtils mLockPatternUtils; |
| |
| Runnable mClearMessageRunnable = new Runnable() { |
| @Override |
| public void run() { |
| mMessage = null; |
| mShowingMessage = false; |
| if (mShowingBouncer) { |
| hideMessage(FADE_DURATION, true); |
| } else { |
| update(); |
| } |
| } |
| }; |
| |
| public static class Helper implements SecurityMessageDisplay { |
| KeyguardMessageArea mMessageArea; |
| Helper(View v) { |
| mMessageArea = (KeyguardMessageArea) v.findViewById(R.id.keyguard_message_area); |
| if (mMessageArea == null) { |
| throw new RuntimeException("Can't find keyguard_message_area in " + v.getClass()); |
| } |
| } |
| |
| public void setMessage(CharSequence msg, boolean important) { |
| if (!TextUtils.isEmpty(msg) && important) { |
| mMessageArea.mMessage = msg; |
| mMessageArea.securityMessageChanged(); |
| } |
| } |
| |
| public void setMessage(int resId, boolean important) { |
| if (resId != 0 && important) { |
| mMessageArea.mMessage = mMessageArea.getContext().getResources().getText(resId); |
| mMessageArea.securityMessageChanged(); |
| } |
| } |
| |
| public void setMessage(int resId, boolean important, Object... formatArgs) { |
| if (resId != 0 && important) { |
| mMessageArea.mMessage = mMessageArea.getContext().getString(resId, formatArgs); |
| mMessageArea.securityMessageChanged(); |
| } |
| } |
| |
| @Override |
| public void showBouncer(int duration) { |
| mMessageArea.hideMessage(duration, false); |
| mMessageArea.mShowingBouncer = true; |
| } |
| |
| @Override |
| public void hideBouncer(int duration) { |
| mMessageArea.showMessage(duration); |
| mMessageArea.mShowingBouncer = false; |
| } |
| |
| @Override |
| public void setTimeout(int timeoutMs) { |
| mMessageArea.mTimeout = timeoutMs; |
| } |
| } |
| |
| private KeyguardUpdateMonitorCallback mInfoCallback = new KeyguardUpdateMonitorCallback() { |
| public void onScreenTurnedOff(int why) { |
| setSelected(false); |
| }; |
| public void onScreenTurnedOn() { |
| setSelected(true); |
| }; |
| }; |
| |
| public KeyguardMessageArea(Context context) { |
| this(context, null); |
| } |
| |
| public KeyguardMessageArea(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| setLayerType(LAYER_TYPE_HARDWARE, null); // work around nested unclipped SaveLayer bug |
| |
| mLockPatternUtils = new LockPatternUtils(context); |
| |
| // Registering this callback immediately updates the battery state, among other things. |
| mUpdateMonitor = KeyguardUpdateMonitor.getInstance(getContext()); |
| mUpdateMonitor.registerCallback(mInfoCallback); |
| mHandler = new Handler(Looper.myLooper()); |
| |
| mSeparator = getResources().getString(R.string.kg_text_message_separator); |
| |
| update(); |
| } |
| |
| @Override |
| protected void onFinishInflate() { |
| final boolean screenOn = KeyguardUpdateMonitor.getInstance(mContext).isScreenOn(); |
| setSelected(screenOn); // This is required to ensure marquee works |
| } |
| |
| public void securityMessageChanged() { |
| setAlpha(1f); |
| mShowingMessage = true; |
| update(); |
| mHandler.removeCallbacks(mClearMessageRunnable); |
| if (mTimeout > 0) { |
| mHandler.postDelayed(mClearMessageRunnable, mTimeout); |
| } |
| mHandler.removeCallbacksAndMessages(ANNOUNCE_TOKEN); |
| mHandler.postAtTime(new AnnounceRunnable(this, getText()), ANNOUNCE_TOKEN, |
| (SystemClock.uptimeMillis() + ANNOUNCEMENT_DELAY)); |
| } |
| |
| /** |
| * Update the status lines based on these rules: |
| * AlarmStatus: Alarm state always gets it's own line. |
| * Status1 is shared between help, battery status and generic unlock instructions, |
| * prioritized in that order. |
| * @param showStatusLines status lines are shown if true |
| */ |
| void update() { |
| MutableInt icon = new MutableInt(0); |
| CharSequence status = getCurrentMessage(); |
| setCompoundDrawablesWithIntrinsicBounds(icon.value, 0, 0, 0); |
| setText(status); |
| } |
| |
| |
| CharSequence getCurrentMessage() { |
| return mShowingMessage ? mMessage : null; |
| } |
| |
| private void hideMessage(int duration, boolean thenUpdate) { |
| if (duration > 0) { |
| Animator anim = ObjectAnimator.ofFloat(this, "alpha", 0f); |
| anim.setDuration(duration); |
| if (thenUpdate) { |
| anim.addListener(new AnimatorListenerAdapter() { |
| @Override |
| public void onAnimationEnd(Animator animation) { |
| update(); |
| } |
| }); |
| } |
| anim.start(); |
| } else { |
| setAlpha(0f); |
| if (thenUpdate) { |
| update(); |
| } |
| } |
| } |
| |
| private void showMessage(int duration) { |
| if (duration > 0) { |
| Animator anim = ObjectAnimator.ofFloat(this, "alpha", 1f); |
| anim.setDuration(duration); |
| anim.start(); |
| } else { |
| setAlpha(1f); |
| } |
| } |
| |
| /** |
| * Runnable used to delay accessibility announcements. |
| */ |
| private static class AnnounceRunnable implements Runnable { |
| private final WeakReference<View> mHost; |
| private final CharSequence mTextToAnnounce; |
| |
| public AnnounceRunnable(View host, CharSequence textToAnnounce) { |
| mHost = new WeakReference<View>(host); |
| mTextToAnnounce = textToAnnounce; |
| } |
| |
| @Override |
| public void run() { |
| final View host = mHost.get(); |
| if (host != null) { |
| host.announceForAccessibility(mTextToAnnounce); |
| } |
| } |
| } |
| } |