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/*
* Copyright (C) 2017 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.launcher3;
import static com.android.launcher3.util.SystemUiController.UI_STATE_FULLSCREEN_TASK;
import static java.lang.annotation.RetentionPolicy.SOURCE;
import android.app.Activity;
import android.content.Context;
import android.content.ContextWrapper;
import android.content.Intent;
import android.content.res.Configuration;
import android.os.Bundle;
import android.window.OnBackInvokedDispatcher;
import androidx.annotation.IntDef;
import com.android.launcher3.DeviceProfile.DeviceProfileListenable;
import com.android.launcher3.DeviceProfile.OnDeviceProfileChangeListener;
import com.android.launcher3.logging.StatsLogManager;
import com.android.launcher3.testing.TestLogging;
import com.android.launcher3.testing.shared.TestProtocol;
import com.android.launcher3.util.SystemUiController;
import com.android.launcher3.util.ViewCache;
import com.android.launcher3.views.AppLauncher;
import com.android.launcher3.views.ScrimView;
import java.io.PrintWriter;
import java.lang.annotation.Retention;
import java.util.ArrayList;
import java.util.List;
/**
* Launcher BaseActivity
*/
public abstract class BaseActivity extends Activity implements AppLauncher,
DeviceProfileListenable {
private static final String TAG = "BaseActivity";
public static final int INVISIBLE_BY_STATE_HANDLER = 1 << 0;
public static final int INVISIBLE_BY_APP_TRANSITIONS = 1 << 1;
public static final int INVISIBLE_BY_PENDING_FLAGS = 1 << 2;
// This is not treated as invisibility flag, but adds as a hint for an incomplete transition.
// When the wallpaper animation runs, it replaces this flag with a proper invisibility
// flag, INVISIBLE_BY_PENDING_FLAGS only for the duration of that animation.
public static final int PENDING_INVISIBLE_BY_WALLPAPER_ANIMATION = 1 << 3;
private static final int INVISIBLE_FLAGS =
INVISIBLE_BY_STATE_HANDLER | INVISIBLE_BY_APP_TRANSITIONS | INVISIBLE_BY_PENDING_FLAGS;
public static final int STATE_HANDLER_INVISIBILITY_FLAGS =
INVISIBLE_BY_STATE_HANDLER | PENDING_INVISIBLE_BY_WALLPAPER_ANIMATION;
public static final int INVISIBLE_ALL =
INVISIBLE_FLAGS | PENDING_INVISIBLE_BY_WALLPAPER_ANIMATION;
@Retention(SOURCE)
@IntDef(
flag = true,
value = {INVISIBLE_BY_STATE_HANDLER, INVISIBLE_BY_APP_TRANSITIONS,
INVISIBLE_BY_PENDING_FLAGS, PENDING_INVISIBLE_BY_WALLPAPER_ANIMATION})
public @interface InvisibilityFlags{}
private final ArrayList<OnDeviceProfileChangeListener> mDPChangeListeners = new ArrayList<>();
private final ArrayList<MultiWindowModeChangedListener> mMultiWindowModeChangedListeners =
new ArrayList<>();
protected DeviceProfile mDeviceProfile;
protected SystemUiController mSystemUiController;
private StatsLogManager mStatsLogManager;
public static final int ACTIVITY_STATE_STARTED = 1 << 0;
public static final int ACTIVITY_STATE_RESUMED = 1 << 1;
/**
* State flags indicating that the activity has received one frame after resume, and was
* not immediately paused.
*/
public static final int ACTIVITY_STATE_DEFERRED_RESUMED = 1 << 2;
public static final int ACTIVITY_STATE_WINDOW_FOCUSED = 1 << 3;
/**
* State flag indicating if the user is active or the activity when to background as a result
* of user action.
* @see #isUserActive()
*/
public static final int ACTIVITY_STATE_USER_ACTIVE = 1 << 4;
/**
* State flag indicating if the user will be active shortly.
*/
public static final int ACTIVITY_STATE_USER_WILL_BE_ACTIVE = 1 << 5;
/**
* State flag indicating that a state transition is in progress
*/
public static final int ACTIVITY_STATE_TRANSITION_ACTIVE = 1 << 6;
@Retention(SOURCE)
@IntDef(
flag = true,
value = {ACTIVITY_STATE_STARTED,
ACTIVITY_STATE_RESUMED,
ACTIVITY_STATE_DEFERRED_RESUMED,
ACTIVITY_STATE_WINDOW_FOCUSED,
ACTIVITY_STATE_USER_ACTIVE,
ACTIVITY_STATE_TRANSITION_ACTIVE})
public @interface ActivityFlags{}
@ActivityFlags
private int mActivityFlags;
// When the recents animation is running, the visibility of the Launcher is managed by the
// animation
@InvisibilityFlags private int mForceInvisible;
private final ViewCache mViewCache = new ViewCache();
@Override
public ViewCache getViewCache() {
return mViewCache;
}
@Override
public DeviceProfile getDeviceProfile() {
return mDeviceProfile;
}
@Override
public List<OnDeviceProfileChangeListener> getOnDeviceProfileChangeListeners() {
return mDPChangeListeners;
}
/**
* Returns {@link StatsLogManager} for user event logging.
*/
@Override
public StatsLogManager getStatsLogManager() {
if (mStatsLogManager == null) {
mStatsLogManager = StatsLogManager.newInstance(this);
}
return mStatsLogManager;
}
public SystemUiController getSystemUiController() {
if (mSystemUiController == null) {
mSystemUiController = new SystemUiController(getWindow());
}
return mSystemUiController;
}
public ScrimView getScrimView() {
return null;
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (Utilities.ATLEAST_T) {
getOnBackInvokedDispatcher().registerOnBackInvokedCallback(
OnBackInvokedDispatcher.PRIORITY_DEFAULT,
() -> {
onBackPressed();
TestLogging.recordEvent(TestProtocol.SEQUENCE_MAIN, "onBackInvoked");
});
}
}
@Override
protected void onStart() {
addActivityFlags(ACTIVITY_STATE_STARTED);
super.onStart();
}
@Override
protected void onResume() {
setResumed();
super.onResume();
}
@Override
protected void onUserLeaveHint() {
removeActivityFlags(ACTIVITY_STATE_USER_ACTIVE);
super.onUserLeaveHint();
}
@Override
public void onMultiWindowModeChanged(boolean isInMultiWindowMode, Configuration newConfig) {
super.onMultiWindowModeChanged(isInMultiWindowMode, newConfig);
for (int i = mMultiWindowModeChangedListeners.size() - 1; i >= 0; i--) {
mMultiWindowModeChangedListeners.get(i).onMultiWindowModeChanged(isInMultiWindowMode);
}
}
@Override
protected void onStop() {
removeActivityFlags(ACTIVITY_STATE_STARTED | ACTIVITY_STATE_USER_ACTIVE);
mForceInvisible = 0;
super.onStop();
// Reset the overridden sysui flags used for the task-swipe launch animation, this is a
// catch all for if we do not get resumed (and therefore not paused below)
getSystemUiController().updateUiState(UI_STATE_FULLSCREEN_TASK, 0);
}
@Override
protected void onPause() {
setPaused();
super.onPause();
// Reset the overridden sysui flags used for the task-swipe launch animation, we do this
// here instead of at the end of the animation because the start of the new activity does
// not happen immediately, which would cause us to reset to launcher's sysui flags and then
// back to the new app (causing a flash)
getSystemUiController().updateUiState(UI_STATE_FULLSCREEN_TASK, 0);
}
@Override
public void onWindowFocusChanged(boolean hasFocus) {
super.onWindowFocusChanged(hasFocus);
if (hasFocus) {
addActivityFlags(ACTIVITY_STATE_WINDOW_FOCUSED);
} else {
removeActivityFlags(ACTIVITY_STATE_WINDOW_FOCUSED);
}
}
public boolean isStarted() {
return (mActivityFlags & ACTIVITY_STATE_STARTED) != 0;
}
/**
* isResumed in already defined as a hidden final method in Activity.java
*/
public boolean hasBeenResumed() {
return (mActivityFlags & ACTIVITY_STATE_RESUMED) != 0;
}
/**
* Sets the activity to appear as paused.
*/
public void setPaused() {
removeActivityFlags(ACTIVITY_STATE_RESUMED | ACTIVITY_STATE_DEFERRED_RESUMED);
}
/**
* Sets the activity to appear as resumed.
*/
public void setResumed() {
addActivityFlags(ACTIVITY_STATE_RESUMED | ACTIVITY_STATE_USER_ACTIVE);
removeActivityFlags(ACTIVITY_STATE_USER_WILL_BE_ACTIVE);
}
public boolean isUserActive() {
return (mActivityFlags & ACTIVITY_STATE_USER_ACTIVE) != 0;
}
public int getActivityFlags() {
return mActivityFlags;
}
protected void addActivityFlags(int flags) {
mActivityFlags |= flags;
onActivityFlagsChanged(flags);
}
protected void removeActivityFlags(int flags) {
mActivityFlags &= ~flags;
onActivityFlagsChanged(flags);
}
protected void onActivityFlagsChanged(int changeBits) { }
public void addMultiWindowModeChangedListener(MultiWindowModeChangedListener listener) {
mMultiWindowModeChangedListeners.add(listener);
}
public void removeMultiWindowModeChangedListener(MultiWindowModeChangedListener listener) {
mMultiWindowModeChangedListeners.remove(listener);
}
/**
* Used to set the override visibility state, used only to handle the transition home with the
* recents animation.
* @see QuickstepTransitionManager#createWallpaperOpenRunner
*/
public void addForceInvisibleFlag(@InvisibilityFlags int flag) {
mForceInvisible |= flag;
}
public void clearForceInvisibleFlag(@InvisibilityFlags int flag) {
mForceInvisible &= ~flag;
}
/**
* @return Wether this activity should be considered invisible regardless of actual visibility.
*/
public boolean isForceInvisible() {
return hasSomeInvisibleFlag(INVISIBLE_FLAGS);
}
public boolean hasSomeInvisibleFlag(int mask) {
return (mForceInvisible & mask) != 0;
}
public interface MultiWindowModeChangedListener {
void onMultiWindowModeChanged(boolean isInMultiWindowMode);
}
protected void dumpMisc(String prefix, PrintWriter writer) {
writer.println(prefix + "deviceProfile isTransposed="
+ getDeviceProfile().isVerticalBarLayout());
writer.println(prefix + "orientation=" + getResources().getConfiguration().orientation);
writer.println(prefix + "mSystemUiController: " + mSystemUiController);
writer.println(prefix + "mActivityFlags: " + mActivityFlags);
writer.println(prefix + "mForceInvisible: " + mForceInvisible);
}
public static <T extends BaseActivity> T fromContext(Context context) {
if (context instanceof BaseActivity) {
return (T) context;
} else if (context instanceof ContextWrapper) {
return fromContext(((ContextWrapper) context).getBaseContext());
} else {
throw new IllegalArgumentException("Cannot find BaseActivity in parent tree");
}
}
}