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/*
* Copyright (C) 2019 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 android.content.Intent.ACTION_PACKAGE_ADDED;
import static android.content.Intent.ACTION_PACKAGE_CHANGED;
import static android.content.Intent.ACTION_PACKAGE_REMOVED;
import static com.android.launcher3.util.PackageManagerHelper.getPackageFilter;
import static com.android.systemui.shared.system.PackageManagerWrapper.ACTION_PREFERRED_ACTIVITY_CHANGED;
import static com.android.systemui.shared.system.QuickStepContract.SYSUI_STATE_HOME_DISABLED;
import android.content.BroadcastReceiver;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.pm.ResolveInfo;
import com.android.systemui.shared.system.PackageManagerWrapper;
import java.util.ArrayList;
/**
* Class to keep track of the current overview component based off user preferences and app updates
* and provide callers the relevant classes.
*/
public final class OverviewComponentObserver {
private final BroadcastReceiver mUserPreferenceChangeReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
updateOverviewTargets();
}
};
private final BroadcastReceiver mOtherHomeAppUpdateReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
updateOverviewTargets();
}
};
private final Context mContext;
private final ComponentName mMyHomeComponent;
private String mUpdateRegisteredPackage;
private ActivityControlHelper mActivityControlHelper;
private Intent mOverviewIntent;
private Intent mHomeIntent;
private int mSystemUiStateFlags;
private boolean mIsHomeAndOverviewSame;
public OverviewComponentObserver(Context context) {
mContext = context;
Intent myHomeIntent = new Intent(Intent.ACTION_MAIN)
.addCategory(Intent.CATEGORY_HOME)
.setPackage(mContext.getPackageName());
ResolveInfo info = context.getPackageManager().resolveActivity(myHomeIntent, 0);
mMyHomeComponent = new ComponentName(context.getPackageName(), info.activityInfo.name);
mContext.registerReceiver(mUserPreferenceChangeReceiver,
new IntentFilter(ACTION_PREFERRED_ACTIVITY_CHANGED));
updateOverviewTargets();
}
public void onSystemUiStateChanged(int stateFlags) {
boolean homeDisabledChanged = (mSystemUiStateFlags & SYSUI_STATE_HOME_DISABLED)
!= (stateFlags & SYSUI_STATE_HOME_DISABLED);
mSystemUiStateFlags = stateFlags;
if (homeDisabledChanged) {
updateOverviewTargets();
}
}
/**
* Update overview intent and {@link ActivityControlHelper} based off the current launcher home
* component.
*/
private void updateOverviewTargets() {
ComponentName defaultHome = PackageManagerWrapper.getInstance()
.getHomeActivities(new ArrayList<>());
final String overviewIntentCategory;
ComponentName overviewComponent;
mHomeIntent = null;
if ((mSystemUiStateFlags & SYSUI_STATE_HOME_DISABLED) == 0 &&
(defaultHome == null || mMyHomeComponent.equals(defaultHome))) {
// User default home is same as out home app. Use Overview integrated in Launcher.
overviewComponent = mMyHomeComponent;
mActivityControlHelper = new LauncherActivityControllerHelper();
mIsHomeAndOverviewSame = true;
overviewIntentCategory = Intent.CATEGORY_HOME;
if (mUpdateRegisteredPackage != null) {
// Remove any update listener as we don't care about other packages.
mContext.unregisterReceiver(mOtherHomeAppUpdateReceiver);
mUpdateRegisteredPackage = null;
}
} else {
// The default home app is a different launcher. Use the fallback Overview instead.
overviewComponent = new ComponentName(mContext, RecentsActivity.class);
mActivityControlHelper = new FallbackActivityControllerHelper();
mIsHomeAndOverviewSame = false;
overviewIntentCategory = Intent.CATEGORY_DEFAULT;
mHomeIntent = new Intent(Intent.ACTION_MAIN)
.addCategory(Intent.CATEGORY_HOME)
.setComponent(defaultHome);
// User's default home app can change as a result of package updates of this app (such
// as uninstalling the app or removing the "Launcher" feature in an update).
// Listen for package updates of this app (and remove any previously attached
// package listener).
if (defaultHome == null) {
if (mUpdateRegisteredPackage != null) {
mContext.unregisterReceiver(mOtherHomeAppUpdateReceiver);
}
} else if (!defaultHome.getPackageName().equals(mUpdateRegisteredPackage)) {
if (mUpdateRegisteredPackage != null) {
mContext.unregisterReceiver(mOtherHomeAppUpdateReceiver);
}
mUpdateRegisteredPackage = defaultHome.getPackageName();
mContext.registerReceiver(mOtherHomeAppUpdateReceiver, getPackageFilter(
mUpdateRegisteredPackage, ACTION_PACKAGE_ADDED, ACTION_PACKAGE_CHANGED,
ACTION_PACKAGE_REMOVED));
}
}
mOverviewIntent = new Intent(Intent.ACTION_MAIN)
.addCategory(overviewIntentCategory)
.setComponent(overviewComponent)
.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
if (mHomeIntent == null) {
mHomeIntent = mOverviewIntent;
}
}
/**
* Clean up any registered receivers.
*/
public void onDestroy() {
mContext.unregisterReceiver(mUserPreferenceChangeReceiver);
if (mUpdateRegisteredPackage != null) {
mContext.unregisterReceiver(mOtherHomeAppUpdateReceiver);
mUpdateRegisteredPackage = null;
}
}
/**
* Get the current intent for going to the overview activity.
*
* @return the overview intent
*/
public Intent getOverviewIntent() {
return mOverviewIntent;
}
/**
* Get the current intent for going to the home activity.
*/
public Intent getHomeIntent() {
return mHomeIntent;
}
/**
* Returns true if home and overview are same activity.
*/
public boolean isHomeAndOverviewSame() {
return mIsHomeAndOverviewSame;
}
/**
* Get the current activity control helper for managing interactions to the overview activity.
*
* @return the current activity control helper
*/
public ActivityControlHelper getActivityControlHelper() {
return mActivityControlHelper;
}
}
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