| /* |
| * 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.util.AttributeSet; |
| import android.view.MotionEvent; |
| import android.view.View; |
| import android.view.ViewConfiguration; |
| import android.widget.Button; |
| |
| import com.android.internal.util.EmergencyAffordanceManager; |
| import com.android.internal.widget.LockPatternUtils; |
| import com.android.settingslib.Utils; |
| |
| /** |
| * 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 final EmergencyAffordanceManager mEmergencyAffordanceManager; |
| |
| private int mDownX; |
| private int mDownY; |
| private boolean mLongPressWasDragged; |
| |
| private LockPatternUtils mLockPatternUtils; |
| |
| private final boolean mEnableEmergencyCallWhileSimLocked; |
| |
| public EmergencyButton(Context context) { |
| this(context, null); |
| } |
| |
| public EmergencyButton(Context context, AttributeSet attrs) { |
| super(context, attrs); |
| mEnableEmergencyCallWhileSimLocked = mContext.getResources().getBoolean( |
| com.android.internal.R.bool.config_enable_emergency_call_while_sim_locked); |
| mEmergencyAffordanceManager = new EmergencyAffordanceManager(context); |
| } |
| |
| @Override |
| protected void onFinishInflate() { |
| super.onFinishInflate(); |
| mLockPatternUtils = new LockPatternUtils(mContext); |
| if (mEmergencyAffordanceManager.needsEmergencyAffordance()) { |
| setOnLongClickListener(v -> { |
| if (!mLongPressWasDragged |
| && mEmergencyAffordanceManager.needsEmergencyAffordance()) { |
| mEmergencyAffordanceManager.performEmergencyCall(); |
| return true; |
| } |
| return false; |
| }); |
| } |
| } |
| |
| @Override |
| public boolean onTouchEvent(MotionEvent event) { |
| final int x = (int) event.getX(); |
| final int y = (int) event.getY(); |
| if (event.getActionMasked() == MotionEvent.ACTION_DOWN) { |
| mDownX = x; |
| mDownY = y; |
| mLongPressWasDragged = false; |
| } else { |
| final int xDiff = Math.abs(x - mDownX); |
| final int yDiff = Math.abs(y - mDownY); |
| int touchSlop = ViewConfiguration.get(mContext).getScaledTouchSlop(); |
| if (Math.abs(yDiff) > touchSlop || Math.abs(xDiff) > touchSlop) { |
| mLongPressWasDragged = true; |
| } |
| } |
| return super.onTouchEvent(event); |
| } |
| |
| /** |
| * Reload colors from resources. |
| **/ |
| public void reloadColors() { |
| int color = Utils.getColorAttrDefaultColor(getContext(), |
| android.R.attr.textColorPrimaryInverse); |
| setTextColor(color); |
| setBackground(getContext() |
| .getDrawable(com.android.systemui.R.drawable.kg_emergency_button_background)); |
| } |
| |
| @Override |
| public boolean performLongClick() { |
| return super.performLongClick(); |
| } |
| |
| void updateEmergencyCallButton(boolean isInCall, boolean isVoiceCapable, boolean simLocked) { |
| boolean visible = false; |
| if (isVoiceCapable) { |
| // Emergency calling requires voice capability. |
| if (isInCall) { |
| visible = true; // always show "return to call" if phone is off-hook |
| } else { |
| 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(KeyguardUpdateMonitor.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); |
| } |
| } |
| } |