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// Copyright 2014 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.share;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.ActivityInfo;
import android.content.pm.ApplicationInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.content.pm.ResolveInfo;
import android.graphics.Bitmap;
import android.graphics.drawable.Drawable;
import android.preference.PreferenceManager;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import org.chromium.chrome.R;
import java.util.Collections;
import java.util.List;
/**
* A helper class that helps to start an intent to share titles and URLs.
*/
public class ShareHelper {
private static final String PACKAGE_NAME_KEY = "last_shared_package_name";
private static final String CLASS_NAME_KEY = "last_shared_class_name";
/**
* Intent extra for sharing screenshots via the Share intent.
*
* Copied from {@link android.provider.Browser} as it is marked as {@literal @hide}.
*/
private static final String EXTRA_SHARE_SCREENSHOT = "share_screenshot";
private ShareHelper() {}
/**
* Creates and shows a share intent picker dialog or starts a share intent directly with the
* activity that was most recently used to share based on shareDirectly value.
*
* @param shareDirectly Whether it should share directly with the activity that was most
* recently used to share.
* @param activity Activity that is used to access package manager.
* @param title Title of the page to be shared.
* @param url URL of the page to be shared.
* @param screenshot Screenshot of the page to be shared.
*/
public static void share(boolean shareDirectly, Activity activity, String title, String url,
Bitmap screenshot, int extraIntentFlags) {
if (shareDirectly) {
shareWithLastUsed(activity, title, url, screenshot, extraIntentFlags);
} else {
showShareDialog(activity, title, url, screenshot, extraIntentFlags);
}
}
/**
* Creates and shows a share intent picker dialog.
*
* @param activity Activity that is used to access package manager.
* @param title Title of the page to be shared.
* @param url URL of the page to be shared.
* @param screenshot Screenshot of the page to be shared.
* @param extraIntentFlags Additional flags that should be added to the share intent.
*/
private static void showShareDialog(final Activity activity, final String title,
final String url, final Bitmap screenshot, final int extraIntentFlags) {
Intent intent = getShareIntent(title, url, screenshot, extraIntentFlags);
PackageManager manager = activity.getPackageManager();
List<ResolveInfo> resolveInfoList = manager.queryIntentActivities(intent, 0);
assert resolveInfoList.size() > 0;
if (resolveInfoList.size() == 0) return;
Collections.sort(resolveInfoList, new ResolveInfo.DisplayNameComparator(manager));
final ShareDialogAdapter adapter =
new ShareDialogAdapter(activity, manager, resolveInfoList);
AlertDialog.Builder builder = new AlertDialog.Builder(activity);
builder.setTitle(activity.getString(R.string.share_link_chooser_title));
builder.setAdapter(adapter, null);
final AlertDialog dialog = builder.create();
dialog.show();
dialog.getListView().setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
ResolveInfo info = adapter.getItem(position);
ActivityInfo ai = info.activityInfo;
ComponentName component =
new ComponentName(ai.applicationInfo.packageName, ai.name);
setLastShareComponentName(activity, component);
Intent intent = getDirectShareIntentForComponent(title, url, screenshot, component,
extraIntentFlags);
activity.startActivity(intent);
dialog.dismiss();
}
});
}
/**
* Starts a share intent with the activity that was most recently used to share.
* If there is no most recently used activity, it does nothing.
* @param activity Activity that is used to start the share intent.
* @param title Title of the page to be shared.
* @param url URL of the page to be shared.
* @param screenshot Screenshot of the page to be shared.
* @param extraIntentFlags Additional flags that should be added to the share intent.
*/
private static void shareWithLastUsed(
Activity activity, String title, String url, Bitmap screenshot, int extraIntentFlags) {
ComponentName component = getLastShareComponentName(activity);
if (component == null) return;
Intent intent = getDirectShareIntentForComponent(
title, url, screenshot, component, extraIntentFlags);
activity.startActivity(intent);
}
/**
* Set the icon and the title for the menu item used for direct share.
*
* @param activity Activity that is used to access the package manager.
* @param item The menu item that is used for direct share
*/
public static void configureDirectShareMenuItem(Activity activity, MenuItem item) {
Drawable directShareIcon = null;
CharSequence directShareTitle = null;
ComponentName component = getLastShareComponentName(activity);
if (component != null) {
try {
directShareIcon = activity.getPackageManager().getActivityIcon(component);
ApplicationInfo ai = activity.getPackageManager().getApplicationInfo(
component.getPackageName(), 0);
directShareTitle = activity.getPackageManager().getApplicationLabel(ai);
} catch (NameNotFoundException exception) {
// Use the default null values.
}
}
item.setIcon(directShareIcon);
if (directShareTitle != null) {
item.setTitle(activity.getString(R.string.accessibility_menu_share_via,
directShareTitle));
}
}
private static Intent getShareIntent(String title, String url, Bitmap screenshot,
int extraIntentFlags) {
Intent intent = new Intent(Intent.ACTION_SEND);
intent.addFlags(extraIntentFlags);
intent.setType("text/plain");
intent.putExtra(Intent.EXTRA_SUBJECT, title);
intent.putExtra(Intent.EXTRA_TEXT, url);
if (screenshot != null) intent.putExtra(EXTRA_SHARE_SCREENSHOT, screenshot);
return intent;
}
private static Intent getDirectShareIntentForComponent(String title, String url,
Bitmap screenshot, ComponentName component, int extraIntentFlags) {
Intent intent = getShareIntent(title, url, screenshot, extraIntentFlags);
intent.addFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT
| Intent.FLAG_ACTIVITY_PREVIOUS_IS_TOP);
intent.setComponent(component);
return intent;
}
private static ComponentName getLastShareComponentName(Context context) {
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
String packageName = preferences.getString(PACKAGE_NAME_KEY, null);
String className = preferences.getString(CLASS_NAME_KEY, null);
if (packageName == null || className == null) return null;
return new ComponentName(packageName, className);
}
private static void setLastShareComponentName(Context context, ComponentName component) {
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
SharedPreferences.Editor editor = preferences.edit();
editor.putString(PACKAGE_NAME_KEY, component.getPackageName());
editor.putString(CLASS_NAME_KEY, component.getClassName());
editor.apply();
}
}