| /* |
| * Copyright (C) 2008 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.content.Context; |
| import android.content.Intent; |
| import android.os.PowerManager; |
| import android.os.SystemClock; |
| import android.os.UserHandle; |
| import android.telecom.TelecomManager; |
| import android.util.AttributeSet; |
| import android.view.View; |
| import android.widget.Button; |
| |
| import com.android.internal.telephony.IccCardConstants.State; |
| import com.android.internal.widget.LockPatternUtils; |
| |
| /** |
| * This class implements a smart emergency button that updates itself based |
| * on telephony state. When the phone is idle, it is an emergency call button. |
| * When there's a call in progress, it presents an appropriate message and |
| * allows the user to return to the call. |
| */ |
| public class EmergencyButton extends Button { |
| private static final Intent INTENT_EMERGENCY_DIAL = new Intent() |
| .setAction("com.android.phone.EmergencyDialer.DIAL") |
| .setPackage("com.android.phone") |
| .setFlags(Intent.FLAG_ACTIVITY_NEW_TASK |
| | Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS |
| | Intent.FLAG_ACTIVITY_CLEAR_TASK); |
| |
| KeyguardUpdateMonitorCallback mInfoCallback = new KeyguardUpdateMonitorCallback() { |
| |
| @Override |
| public void onSimStateChanged(int subId, int slotId, State simState) { |
| updateEmergencyCallButton(); |
| } |
| |
| @Override |
| public void onPhoneStateChanged(int phoneState) { |
| updateEmergencyCallButton(); |
| } |
| }; |
| |
| public interface EmergencyButtonCallback { |
| public void onEmergencyButtonClickedWhenInCall(); |
| } |
| |
| private LockPatternUtils mLockPatternUtils; |
| private PowerManager mPowerManager; |
| private EmergencyButtonCallback mEmergencyButtonCallback; |
| |
| private final boolean mIsVoiceCapable; |
| private final boolean mEnableEmergencyCallWhileSimLocked; |
| |
| public EmergencyButton(Context context) { |
| this(context, null); |
| } |
| |
| public EmergencyButton(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| mIsVoiceCapable = context.getResources().getBoolean( |
| com.android.internal.R.bool.config_voice_capable); |
| mEnableEmergencyCallWhileSimLocked = mContext.getResources().getBoolean( |
| com.android.internal.R.bool.config_enable_emergency_call_while_sim_locked); |
| } |
| |
| @Override |
| protected void onAttachedToWindow() { |
| super.onAttachedToWindow(); |
| KeyguardUpdateMonitor.getInstance(mContext).registerCallback(mInfoCallback); |
| } |
| |
| @Override |
| protected void onDetachedFromWindow() { |
| super.onDetachedFromWindow(); |
| KeyguardUpdateMonitor.getInstance(mContext).removeCallback(mInfoCallback); |
| } |
| |
| @Override |
| protected void onFinishInflate() { |
| super.onFinishInflate(); |
| mLockPatternUtils = new LockPatternUtils(mContext); |
| mPowerManager = (PowerManager) mContext.getSystemService(Context.POWER_SERVICE); |
| setOnClickListener(new OnClickListener() { |
| public void onClick(View v) { |
| takeEmergencyCallAction(); |
| } |
| }); |
| updateEmergencyCallButton(); |
| } |
| |
| /** |
| * Shows the emergency dialer or returns the user to the existing call. |
| */ |
| public void takeEmergencyCallAction() { |
| // TODO: implement a shorter timeout once new PowerManager API is ready. |
| // should be the equivalent to the old userActivity(EMERGENCY_CALL_TIMEOUT) |
| mPowerManager.userActivity(SystemClock.uptimeMillis(), true); |
| if (isInCall()) { |
| resumeCall(); |
| if (mEmergencyButtonCallback != null) { |
| mEmergencyButtonCallback.onEmergencyButtonClickedWhenInCall(); |
| } |
| } else { |
| KeyguardUpdateMonitor.getInstance(mContext).reportEmergencyCallAction( |
| true /* bypassHandler */); |
| getContext().startActivityAsUser(INTENT_EMERGENCY_DIAL, |
| new UserHandle(mLockPatternUtils.getCurrentUser())); |
| } |
| } |
| |
| private void updateEmergencyCallButton() { |
| boolean visible = false; |
| if (mIsVoiceCapable) { |
| // Emergency calling requires voice capability. |
| if (isInCall()) { |
| visible = true; // always show "return to call" if phone is off-hook |
| } else { |
| final boolean simLocked = KeyguardUpdateMonitor.getInstance(mContext) |
| .isSimPinVoiceSecure(); |
| if (simLocked) { |
| // Some countries can't handle emergency calls while SIM is locked. |
| visible = mEnableEmergencyCallWhileSimLocked; |
| } else { |
| // Only show if there is a secure screen (pin/pattern/SIM pin/SIM puk); |
| visible = mLockPatternUtils.isSecure(mLockPatternUtils.getCurrentUser()); |
| } |
| } |
| } |
| if (visible) { |
| setVisibility(View.VISIBLE); |
| |
| int textId; |
| if (isInCall()) { |
| textId = com.android.internal.R.string.lockscreen_return_to_call; |
| } else { |
| textId = com.android.internal.R.string.lockscreen_emergency_call; |
| } |
| setText(textId); |
| } else { |
| setVisibility(View.GONE); |
| } |
| } |
| |
| public void setCallback(EmergencyButtonCallback callback) { |
| mEmergencyButtonCallback = callback; |
| } |
| |
| /** |
| * Resumes a call in progress. |
| */ |
| private void resumeCall() { |
| getTelecommManager().showInCallScreen(false); |
| } |
| |
| /** |
| * @return {@code true} if there is a call currently in progress. |
| */ |
| private boolean isInCall() { |
| return getTelecommManager().isInCall(); |
| } |
| |
| private TelecomManager getTelecommManager() { |
| return (TelecomManager) mContext.getSystemService(Context.TELECOM_SERVICE); |
| } |
| } |