// Copyright 2016 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
package org.chromium.content.browser.selection;
import android.animation.Animator;
import android.animation.Animator.AnimatorListener;
import android.animation.AnimatorListenerAdapter;
import android.content.Context;
import android.os.Build;
import android.view.ActionMode;
import android.view.ActionMode.Callback2;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.PopupWindow;
import org.chromium.base.Log;
import org.chromium.base.PackageUtils;
import org.chromium.base.task.PostTask;
import org.chromium.base.task.TaskTraits;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
/**
* This is a workaround for LG Email app: crbug.com/651706
* LG Email app runs UI-thread APIs from InputConnection methods. This is not allowable with
* the change ImeThread introduces, and LG Email app is bundled and cannot be updated without
* a system update. However, LG Email team is committed to fixing this in the near future.
* This is a version code limited workaround to avoid crashes in the app.
*/
public final class LGEmailActionModeWorkaroundImpl {
private static final String TAG = "Ime";
// This is the last broken version shipped on LG V20/NRD90M.
public static final int LGEmailWorkaroundMaxVersion = 67502100;
private LGEmailActionModeWorkaroundImpl() {}
public static boolean isSafeVersion(int versionCode) {
return versionCode > LGEmailWorkaroundMaxVersion;
}
/**
* Run this workaround only when it's applicable and absolutely necessary.
* @param context The context
* @param actionMode The {@ActionMode} to apply the workaround to.
*/
public static void runIfNecessary(Context context, ActionMode actionMode) {
if (shouldAllowActionModeDestroyOnNonUiThread(context)) {
allowActionModeDestroyOnNonUiThread(actionMode);
}
}
private static boolean shouldAllowActionModeDestroyOnNonUiThread(Context context) {
String appName = context.getPackageName();
int versionCode = PackageUtils.getPackageVersion(appName);
if (versionCode == -1) return false;
int appTargetSdkVersion = context.getApplicationInfo().targetSdkVersion;
if (appTargetSdkVersion < Build.VERSION_CODES.M
|| appTargetSdkVersion > Build.VERSION_CODES.N) {
return false;
}
final String lgeMailPackageId = "com.lge.email";
if (!lgeMailPackageId.equals(appName)) return false;
if (versionCode > LGEmailWorkaroundMaxVersion) return false;
Log.w(
TAG,
"Working around action mode LG Email bug in WebView (http://crbug.com/651706). "
+ "APK name: "
+ lgeMailPackageId
+ ", versionCode: "
+ versionCode);
return true;
}
private static void allowActionModeDestroyOnNonUiThread(ActionMode actionMode) {
// LG Email app dismisses ActionMode whenever InputConnection#setComposingText() or
// InputConnection#commitText() occurs. But they do on ImeThread, not on UI thread and
// this causes crashes in two places.
try {
// Part I: post ActionMode.Callback2#onDestroyActionMode() on UI thread.
final ActionMode.Callback2 c = (Callback2) getField(actionMode, "mCallback");
setField(
actionMode,
"mCallback",
new ActionMode.Callback2() {
@Override
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
return c.onCreateActionMode(mode, menu);
}
@Override
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
return c.onPrepareActionMode(mode, menu);
}
@Override
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
return c.onActionItemClicked(mode, item);
}
@Override
public void onDestroyActionMode(final ActionMode mode) {
PostTask.postTask(
TaskTraits.UI_DEFAULT,
new Runnable() {
@Override
public void run() {
c.onDestroyActionMode(mode);
}
});
}
});
// Part II: post PopupWindow#dismiss() on UI thread.
final Object floatingToolbar = getField(actionMode, "mFloatingToolbar");
final Object popup = getField(floatingToolbar, "mPopup");
final ViewGroup contentContainer = (ViewGroup) getField(popup, "mContentContainer");
final PopupWindow popupWindow = (PopupWindow) getField(popup, "mPopupWindow");
Method createExitAnimation =
floatingToolbar
.getClass()
.getDeclaredMethod(
"createExitAnimation",
View.class,
int.class,
AnimatorListener.class);
createExitAnimation.setAccessible(true);
Object newDismissAnimation =
createExitAnimation.invoke(
null,
contentContainer,
150,
new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
PostTask.postTask(
TaskTraits.UI_DEFAULT,
new Runnable() {
@Override
public void run() {
popupWindow.dismiss();
contentContainer.removeAllViews();
}
});
}
});
setField(popup, "mDismissAnimation", newDismissAnimation);
} catch (NoSuchFieldException
| IllegalAccessException
| IllegalArgumentException
| NoSuchMethodException
| InvocationTargetException e) {
// Ignore exception and just return.
} catch (Exception e) {
Log.w(TAG, "Error occurred during LGEmailActionModeWorkaround: ", e);
}
}
private static Object getField(Object obj, String fieldName)
throws NoSuchFieldException, IllegalAccessException, IllegalArgumentException {
Field f = obj.getClass().getDeclaredField(fieldName);
f.setAccessible(true);
return f.get(obj);
}
private static void setField(Object obj, String fieldName, Object value)
throws NoSuchFieldException, IllegalAccessException, IllegalArgumentException {
Field f = obj.getClass().getDeclaredField(fieldName);
f.setAccessible(true);
f.set(obj, value);
}
}
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