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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
package org.chromium.chrome.browser.init;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.res.Configuration;
import android.os.Build;
import android.os.Bundle;
import android.os.Handler;
import android.os.SystemClock;
import android.provider.Settings;
import android.provider.Settings.SettingNotFoundException;
import android.support.v7.app.AppCompatActivity;
import android.view.Display;
import android.view.Surface;
import android.view.View;
import android.view.ViewTreeObserver;
import android.view.ViewTreeObserver.OnPreDrawListener;
import android.view.WindowManager;
import org.chromium.base.ApiCompatibilityUtils;
import org.chromium.base.TraceEvent;
import org.chromium.base.library_loader.LoaderErrors;
import org.chromium.base.library_loader.ProcessInitException;
import org.chromium.chrome.browser.ChromeApplication;
import org.chromium.chrome.browser.WarmupManager;
import org.chromium.chrome.browser.metrics.LaunchMetrics;
import org.chromium.chrome.browser.metrics.MemoryUma;
import org.chromium.chrome.browser.profiles.Profile;
import org.chromium.ui.base.DeviceFormFactor;
import java.lang.reflect.Field;
/**
* An activity that talks with application and activity level delegates for async initialization.
*/
public abstract class AsyncInitializationActivity extends AppCompatActivity implements
ChromeActivityNativeDelegate, BrowserParts {
private static final LaunchMetrics.BooleanEvent sBadIntentMetric =
new LaunchMetrics.BooleanEvent("Launch.InvalidIntent");
protected final Handler mHandler;
// Time at which onCreate is called. This is realtime, counted in ms since device boot.
private long mOnCreateTimestampMs;
// Time at which onCreate is called. This is uptime, to be sent to native code.
private long mOnCreateTimestampUptimeMs;
private Bundle mSavedInstanceState;
private int mCurrentOrientation = Surface.ROTATION_0;
private boolean mDestroyed;
private NativeInitializationController mNativeInitializationController;
private MemoryUma mMemoryUma;
private boolean mIsTablet;
private long mLastUserInteractionTime;
public AsyncInitializationActivity() {
mHandler = new Handler();
}
@Override
protected void onDestroy() {
mDestroyed = true;
super.onDestroy();
}
@Override
protected void attachBaseContext(Context newBase) {
super.attachBaseContext(newBase);
// On N, Chrome should always retain the tab strip layout on tablets. Normally in
// multi-window, if Chrome is launched into a smaller screen Android will load the tab
// switcher resources. Overriding the smallestScreenWidthDp in the Configuration ensures
// Android will load the tab strip resources. See crbug.com/588838.
if (Build.VERSION.CODENAME.equals("N")) {
int smallestDeviceWidthDp = DeviceFormFactor.getSmallestDeviceWidthDp(this);
if (smallestDeviceWidthDp >= DeviceFormFactor.MINIMUM_TABLET_WIDTH_DP) {
Configuration overrideConfiguration = new Configuration();
overrideConfiguration.smallestScreenWidthDp = smallestDeviceWidthDp;
applyOverrideConfiguration(overrideConfiguration);
}
}
}
@Override
public void preInflationStartup() {
mIsTablet = DeviceFormFactor.isTablet(this);
}
@Override
public final void setContentViewAndLoadLibrary() {
// setContentView inflating the decorView and the basic UI hierarhcy as stubs.
// This is done here before kicking long running I/O because inflation includes accessing
// resource files(xmls etc) even if we are inflating views defined by the framework. If this
// operation gets blocked because other long running I/O are running, we delay onCreate(),
// onStart() and first draw consequently.
setContentView();
if (mLaunchBehindWorkaround != null) mLaunchBehindWorkaround.onSetContentView();
// Kick off long running IO tasks that can be done in parallel.
mNativeInitializationController = new NativeInitializationController(this, this);
mNativeInitializationController.startBackgroundTasks();
}
@Override
public void postInflationStartup() {
final View firstDrawView = getViewToBeDrawnBeforeInitializingNative();
assert firstDrawView != null;
ViewTreeObserver.OnPreDrawListener firstDrawListener =
new ViewTreeObserver.OnPreDrawListener() {
@Override
public boolean onPreDraw() {
firstDrawView.getViewTreeObserver().removeOnPreDrawListener(this);
onFirstDrawComplete();
return true;
}
};
firstDrawView.getViewTreeObserver().addOnPreDrawListener(firstDrawListener);
}
/**
* @return The primary view that must have completed at least one draw before initializing
* native. This must be non-null.
*/
protected View getViewToBeDrawnBeforeInitializingNative() {
return findViewById(android.R.id.content);
}
@Override
public void maybePreconnect() {
TraceEvent.begin("maybePreconnect");
Intent intent = getIntent();
if (intent != null && Intent.ACTION_VIEW.equals(intent.getAction())) {
final String url = intent.getDataString();
WarmupManager.getInstance()
.maybePreconnectUrlAndSubResources(Profile.getLastUsedProfile(), url);
}
TraceEvent.end("maybePreconnect");
}
@Override
public void initializeCompositor() { }
@Override
public void initializeState() { }
@Override
public void finishNativeInitialization() {
// Set up the initial orientation of the device.
checkOrientation();
findViewById(android.R.id.content).addOnLayoutChangeListener(
new View.OnLayoutChangeListener() {
@Override
public void onLayoutChange(View v, int left, int top, int right, int bottom,
int oldLeft, int oldTop, int oldRight, int oldBottom) {
checkOrientation();
}
});
mMemoryUma = new MemoryUma();
mNativeInitializationController.onNativeInitializationComplete();
}
/**
* Actions that may be run at some point after startup. Place tasks that are not critical to the
* startup path here. This method will be called automatically and should not be called
* directly by subclasses. Overriding methods should call super.onDeferredStartup().
*/
protected void onDeferredStartup() { }
@Override
public void onStartupFailure() {
ProcessInitException e =
new ProcessInitException(LoaderErrors.LOADER_ERROR_NATIVE_STARTUP_FAILED);
ChromeApplication.reportStartupErrorAndExit(e);
}
/**
* Extending classes should override {@link AsyncInitializationActivity#preInflationStartup()},
* {@link AsyncInitializationActivity#setContentView()} and
* {@link AsyncInitializationActivity#postInflationStartup()} instead of this call which will
* be called on that order.
*/
@Override
protected final void onCreate(Bundle savedInstanceState) {
if (!isStartedUpCorrectly(getIntent())) {
sBadIntentMetric.recordHit();
super.onCreate(null);
ApiCompatibilityUtils.finishAndRemoveTask(this);
return;
}
super.onCreate(savedInstanceState);
mOnCreateTimestampMs = SystemClock.elapsedRealtime();
mOnCreateTimestampUptimeMs = SystemClock.uptimeMillis();
mSavedInstanceState = savedInstanceState;
ChromeBrowserInitializer.getInstance(this).handlePreNativeStartup(this);
}
/**
* Whether or not the Activity was started up via a valid Intent.
*/
protected boolean isStartedUpCorrectly(Intent intent) {
return true;
}
/**
* @return The elapsed real time for the activity creation in ms.
*/
protected long getOnCreateTimestampUptimeMs() {
return mOnCreateTimestampUptimeMs;
}
/**
* @return The uptime for the activity creation in ms.
*/
protected long getOnCreateTimestampMs() {
return mOnCreateTimestampMs;
}
/**
* @return The saved bundle for the last recorded state.
*/
protected Bundle getSavedInstanceState() {
return mSavedInstanceState;
}
/**
* Resets the saved state and makes it unavailable for the rest of the activity lifecycle.
*/
protected void resetSavedInstanceState() {
mSavedInstanceState = null;
}
@Override
public void onStart() {
super.onStart();
mNativeInitializationController.onStart();
}
@Override
public void onResume() {
super.onResume();
mNativeInitializationController.onResume();
if (mLaunchBehindWorkaround != null) mLaunchBehindWorkaround.onResume();
}
@Override
public void onPause() {
mNativeInitializationController.onPause();
super.onPause();
if (mLaunchBehindWorkaround != null) mLaunchBehindWorkaround.onPause();
}
@Override
public void onStop() {
super.onStop();
if (mMemoryUma != null) mMemoryUma.onStop();
mNativeInitializationController.onStop();
}
@Override
protected void onNewIntent(Intent intent) {
if (intent == null) return;
mNativeInitializationController.onNewIntent(intent);
setIntent(intent);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
mNativeInitializationController.onActivityResult(requestCode, resultCode, data);
}
@Override
public final void onCreateWithNative() {
try {
ChromeBrowserInitializer.getInstance(this).handlePostNativeStartup(true, this);
} catch (ProcessInitException e) {
ChromeApplication.reportStartupErrorAndExit(e);
}
}
@Override
public void onStartWithNative() { }
@Override
public void onResumeWithNative() { }
@Override
public void onPauseWithNative() { }
@Override
public void onStopWithNative() { }
@Override
public boolean isActivityDestroyed() {
return mDestroyed;
}
@Override
public final void onFirstDrawComplete() {
mHandler.post(new Runnable() {
@Override
public void run() {
mNativeInitializationController.firstDrawComplete();
}
});
}
@Override
public void onNewIntentWithNative(Intent intent) { }
@Override
public boolean onActivityResultWithNative(int requestCode, int resultCode, Intent data) {
return false;
}
@Override
public void onLowMemory() {
super.onLowMemory();
if (mMemoryUma != null) mMemoryUma.onLowMemory();
}
@Override
public void onTrimMemory(int level) {
super.onTrimMemory(level);
if (mMemoryUma != null) mMemoryUma.onTrimMemory(level);
}
/**
* @return Whether the activity is running in tablet mode.
*/
public boolean isTablet() {
return mIsTablet;
}
@Override
public void onUserInteraction() {
mLastUserInteractionTime = SystemClock.elapsedRealtime();
}
/**
* @return timestamp when the last user interaction was made.
*/
public long getLastUserInteractionTime() {
return mLastUserInteractionTime;
}
/**
* Called when the orientation of the device changes. The orientation is checked/detected on
* root view layouts.
* @param orientation One of {@link Surface#ROTATION_0} (no rotation),
* {@link Surface#ROTATION_90}, {@link Surface#ROTATION_180}, or
* {@link Surface#ROTATION_270}.
*/
protected void onOrientationChange(int orientation) {
}
private void checkOrientation() {
WindowManager wm = getWindowManager();
if (wm == null) return;
Display display = wm.getDefaultDisplay();
if (display == null) return;
int oldOrientation = mCurrentOrientation;
mCurrentOrientation = display.getRotation();
if (oldOrientation != mCurrentOrientation) onOrientationChange(mCurrentOrientation);
}
/**
* Removes the window background.
*/
protected void removeWindowBackground() {
boolean removeWindowBackground = true;
try {
Field field = Settings.Secure.class.getField(
"ACCESSIBILITY_DISPLAY_MAGNIFICATION_ENABLED");
field.setAccessible(true);
if (field.getType() == String.class) {
String accessibilityMagnificationSetting = (String) field.get(null);
// When Accessibility magnification is turned on, setting a null window
// background causes the overlaid android views to stretch when panning.
// (crbug/332994)
if (Settings.Secure.getInt(
getContentResolver(), accessibilityMagnificationSetting) == 1) {
removeWindowBackground = false;
}
}
} catch (SettingNotFoundException e) {
// Window background is removed if an exception occurs.
} catch (NoSuchFieldException e) {
// Window background is removed if an exception occurs.
} catch (IllegalAccessException e) {
// Window background is removed if an exception occurs.
} catch (IllegalArgumentException e) {
// Window background is removed if an exception occurs.
}
if (removeWindowBackground) getWindow().setBackgroundDrawable(null);
}
/**
* Extending classes should implement this and call {@link Activity#setContentView(int)} in it.
*/
protected abstract void setContentView();
/**
* Lollipop (pre-MR1) makeTaskLaunchBehind() workaround.
*
* Our activity's surface is destroyed at the end of the new activity animation
* when ActivityOptions.makeTaskLaunchBehind() is used, which causes a crash.
* Making everything invisible when paused prevents the crash, since view changes
* will not trigger draws to the missing surface. However, we need to wait until
* after the first draw to make everything invisible, as the activity launch
* animation needs a full frame (or it will delay the animation excessively).
*/
private final LaunchBehindWorkaround mLaunchBehindWorkaround =
(Build.VERSION.SDK_INT == Build.VERSION_CODES.LOLLIPOP)
? new LaunchBehindWorkaround()
: null;
private class LaunchBehindWorkaround {
private boolean mPaused = false;
private View getDecorView() {
return getWindow().getDecorView();
}
private ViewTreeObserver getViewTreeObserver() {
return getDecorView().getViewTreeObserver();
}
private void onPause() {
mPaused = true;
}
public void onResume() {
mPaused = false;
getDecorView().setVisibility(View.VISIBLE);
}
public void onSetContentView() {
getViewTreeObserver().addOnPreDrawListener(mPreDrawListener);
}
// Note, we probably want onDrawListener here, but it isn't being called
// when I add this to the decorView. However, it should be the same for
// this purpose as long as no other pre-draw listener returns false.
private final OnPreDrawListener mPreDrawListener = new OnPreDrawListener() {
@Override
public boolean onPreDraw() {
mHandler.post(new Runnable() {
@Override
public void run() {
if (mPaused) {
getDecorView().setVisibility(View.GONE);
}
getViewTreeObserver().removeOnPreDrawListener(mPreDrawListener);
}
});
return true;
}
};
}
}
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