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/*
* Copyright (C) 2018 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.quickstep;
import static com.android.systemui.shared.system.ActivityManagerWrapper
.CLOSE_SYSTEM_WINDOWS_REASON_RECENTS;
import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.AnimatorSet;
import android.annotation.TargetApi;
import android.content.Context;
import android.os.Build;
import android.os.SystemClock;
import android.util.Log;
import android.view.ViewConfiguration;
import com.android.launcher3.BaseDraggingActivity;
import com.android.launcher3.MainThreadExecutor;
import com.android.launcher3.logging.UserEventDispatcher;
import com.android.launcher3.testing.TestProtocol;
import com.android.launcher3.userevent.nano.LauncherLogProto;
import com.android.quickstep.ActivityControlHelper.ActivityInitListener;
import com.android.quickstep.views.RecentsView;
import com.android.quickstep.views.TaskView;
import com.android.systemui.shared.system.ActivityManagerWrapper;
import com.android.systemui.shared.system.LatencyTrackerCompat;
import com.android.systemui.shared.system.RemoteAnimationTargetCompat;
/**
* Helper class to handle various atomic commands for switching between Overview.
*/
@TargetApi(Build.VERSION_CODES.P)
public class OverviewCommandHelper {
private final Context mContext;
private final ActivityManagerWrapper mAM;
private final RecentsModel mRecentsModel;
private final MainThreadExecutor mMainThreadExecutor;
private final OverviewComponentObserver mOverviewComponentObserver;
private long mLastToggleTime;
public OverviewCommandHelper(Context context, OverviewComponentObserver observer) {
mContext = context;
mAM = ActivityManagerWrapper.getInstance();
mMainThreadExecutor = new MainThreadExecutor();
mRecentsModel = RecentsModel.INSTANCE.get(mContext);
mOverviewComponentObserver = observer;
}
public void onOverviewToggle() {
// If currently screen pinning, do not enter overview
if (mAM.isScreenPinningActive()) {
return;
}
mAM.closeSystemWindows(CLOSE_SYSTEM_WINDOWS_REASON_RECENTS);
mMainThreadExecutor.execute(new RecentsActivityCommand<>());
}
public void onOverviewShown(boolean triggeredFromAltTab) {
mMainThreadExecutor.execute(new ShowRecentsCommand(triggeredFromAltTab));
}
public void onOverviewHidden() {
mMainThreadExecutor.execute(new HideRecentsCommand());
}
public void onTip(int actionType, int viewType) {
mMainThreadExecutor.execute(() ->
UserEventDispatcher.newInstance(mContext).logActionTip(actionType, viewType));
}
private class ShowRecentsCommand extends RecentsActivityCommand {
private final boolean mTriggeredFromAltTab;
ShowRecentsCommand(boolean triggeredFromAltTab) {
mTriggeredFromAltTab = triggeredFromAltTab;
}
@Override
protected boolean handleCommand(long elapsedTime) {
// TODO: Go to the next page if started from alt-tab.
return mHelper.getVisibleRecentsView() != null;
}
@Override
protected void onTransitionComplete() {
// TODO(b/138729100) This doesn't execute first time launcher is run
if (mTriggeredFromAltTab) {
RecentsView rv = (RecentsView) mHelper.getVisibleRecentsView();
if (rv == null) {
return;
}
// Ensure that recents view has focus so that it receives the followup key inputs
TaskView taskView = rv.getNextTaskView();
if (taskView == null) {
if (rv.getTaskViewCount() > 0) {
taskView = (TaskView) rv.getPageAt(0);
taskView.requestFocus();
} else {
rv.requestFocus();
}
} else {
taskView.requestFocus();
}
}
}
}
private class HideRecentsCommand extends RecentsActivityCommand {
@Override
protected boolean handleCommand(long elapsedTime) {
RecentsView recents = (RecentsView) mHelper.getVisibleRecentsView();
if (recents == null) {
return false;
}
int currentPage = recents.getNextPage();
if (currentPage >= 0 && currentPage < recents.getTaskViewCount()) {
((TaskView) recents.getPageAt(currentPage)).launchTask(true);
} else {
recents.startHome();
}
return true;
}
}
private class RecentsActivityCommand<T extends BaseDraggingActivity> implements Runnable {
protected final ActivityControlHelper<T> mHelper;
private final long mCreateTime;
private final AppToOverviewAnimationProvider<T> mAnimationProvider;
private final long mToggleClickedTime = SystemClock.uptimeMillis();
private boolean mUserEventLogged;
private ActivityInitListener mListener;
public RecentsActivityCommand() {
mHelper = mOverviewComponentObserver.getActivityControlHelper();
mCreateTime = SystemClock.elapsedRealtime();
mAnimationProvider =
new AppToOverviewAnimationProvider<>(mHelper, RecentsModel.getRunningTaskId());
// Preload the plan
mRecentsModel.getTasks(null);
}
@Override
public void run() {
if (TestProtocol.sDebugTracing) {
Log.d(TestProtocol.ALL_APPS_UPON_RECENTS, "RecentsActivityCommand.run");
}
long elapsedTime = mCreateTime - mLastToggleTime;
mLastToggleTime = mCreateTime;
if (handleCommand(elapsedTime)) {
// Command already handled.
return;
}
if (mHelper.switchToRecentsIfVisible(this::onTransitionComplete)) {
// If successfully switched, then return
return;
}
// Otherwise, start overview.
mListener = mHelper.createActivityInitListener(this::onActivityReady);
mListener.registerAndStartActivity(mOverviewComponentObserver.getOverviewIntent(),
this::createWindowAnimation, mContext, mMainThreadExecutor.getHandler(),
mAnimationProvider.getRecentsLaunchDuration());
}
protected boolean handleCommand(long elapsedTime) {
// TODO: We need to fix this case with PIP, when an activity first enters PIP, it shows
// the menu activity which takes window focus, preventing the right condition from
// being run below
RecentsView recents = mHelper.getVisibleRecentsView();
if (recents != null) {
// Launch the next task
recents.showNextTask();
return true;
} else if (elapsedTime < ViewConfiguration.getDoubleTapTimeout()) {
// The user tried to launch back into overview too quickly, either after
// launching an app, or before overview has actually shown, just ignore for now
return true;
}
return false;
}
private boolean onActivityReady(T activity, Boolean wasVisible) {
if (!mUserEventLogged) {
activity.getUserEventDispatcher().logActionCommand(
LauncherLogProto.Action.Command.RECENTS_BUTTON,
mHelper.getContainerType(),
LauncherLogProto.ContainerType.TASKSWITCHER);
mUserEventLogged = true;
}
return mAnimationProvider.onActivityReady(activity, wasVisible);
}
private AnimatorSet createWindowAnimation(RemoteAnimationTargetCompat[] targetCompats) {
if (LatencyTrackerCompat.isEnabled(mContext)) {
LatencyTrackerCompat.logToggleRecents(
(int) (SystemClock.uptimeMillis() - mToggleClickedTime));
}
mListener.unregister();
AnimatorSet animatorSet = mAnimationProvider.createWindowAnimation(targetCompats);
animatorSet.addListener(new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
onTransitionComplete();
}
});
return animatorSet;
}
protected void onTransitionComplete() { }
}
}
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