chrome/browser/android/webapps/add_to_homescreen_dialog_helper.cc

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/android/webapps/add_to_homescreen_dialog_helper.h"
   6
   7 #include <jni.h>
   8
   9 #include "base/android/jni_android.h"
  10 #include "base/android/jni_string.h"
  11 #include "base/basictypes.h"
  12 #include "base/location.h"
  13 #include "base/strings/string16.h"
  14 #include "base/strings/utf_string_conversions.h"
  15 #include "chrome/browser/android/shortcut_helper.h"
  16 #include "chrome/browser/banners/app_banner_settings_helper.h"
  17 #include "content/public/browser/browser_thread.h"
  18 #include "content/public/browser/web_contents.h"
  19 #include "content/public/common/manifest.h"
  20 #include "jni/AddToHomescreenDialogHelper_jni.h"
  21 #include "ui/gfx/android/java_bitmap.h"
  22 #include "ui/gfx/color_analysis.h"
  23 #include "url/gurl.h"
  24
  25 using content::Manifest;
  26
  27 jlong Initialize(JNIEnv* env, jobject obj, jobject java_web_contents) {
  28   content::WebContents* web_contents =
  29       content::WebContents::FromJavaWebContents(java_web_contents);
  30   AddToHomescreenDialogHelper* add_to_homescreen_helper =
  31       new AddToHomescreenDialogHelper(env, obj, web_contents);
  32   return reinterpret_cast<intptr_t>(add_to_homescreen_helper);
  33 }
  34
  35 AddToHomescreenDialogHelper::AddToHomescreenDialogHelper(JNIEnv* env,
  36                                              jobject obj,
  37                                              content::WebContents* web_contents)
  38     : add_shortcut_pending_(false),
  39       data_fetcher_(new AddToHomescreenDataFetcher(web_contents, this)) {
  40   java_ref_.Reset(env, obj);
  41 }
  42
  43 AddToHomescreenDialogHelper::~AddToHomescreenDialogHelper() {
  44   data_fetcher_->set_weak_observer(nullptr);
  45   data_fetcher_ = nullptr;
  46 }
  47
  48 void AddToHomescreenDialogHelper::OnUserTitleAvailable(
  49     const base::string16& user_title) {
  50   JNIEnv* env = base::android::AttachCurrentThread();
  51   ScopedJavaLocalRef<jstring> j_user_title =
  52       base::android::ConvertUTF16ToJavaString(env, user_title);
  53   Java_AddToHomescreenDialogHelper_onUserTitleAvailable(env,
  54                                                   java_ref_.obj(),
  55                                                   j_user_title.obj());
  56 }
  57
  58 void AddToHomescreenDialogHelper::OnDataAvailable(const ShortcutInfo& info,
  59                                             const SkBitmap& icon) {
  60   JNIEnv* env = base::android::AttachCurrentThread();
  61   ScopedJavaLocalRef<jobject> java_bitmap;
  62   if (icon.getSize())
  63     java_bitmap = gfx::ConvertToJavaBitmap(&icon);
  64
  65   Java_AddToHomescreenDialogHelper_onIconAvailable(env,
  66                                              java_ref_.obj(),
  67                                              java_bitmap.obj());
  68
  69   if (add_shortcut_pending_)
  70     AddShortcut(info, icon);
  71 }
  72
  73 void AddToHomescreenDialogHelper::Destroy(JNIEnv* env, jobject obj) {
  74   delete this;
  75 }
  76
  77 SkBitmap AddToHomescreenDialogHelper::FinalizeLauncherIcon(
  78       const SkBitmap& bitmap,
  79       const GURL& url) {
  80   DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
  81
  82   // Determine a single color to use for the favicon if the favicon that is
  83   // returned it is too low quality.
  84   SkColor color = color_utils::CalculateKMeanColorOfBitmap(bitmap);
  85   int dominant_red = SkColorGetR(color);
  86   int dominant_green = SkColorGetG(color);
  87   int dominant_blue = SkColorGetB(color);
  88
  89   // Make the icon acceptable for the Android launcher.
  90   JNIEnv* env = base::android::AttachCurrentThread();
  91   ScopedJavaLocalRef<jstring> java_url =
  92       base::android::ConvertUTF8ToJavaString(env, url.spec());
  93   ScopedJavaLocalRef<jobject> java_bitmap;
  94   if (bitmap.getSize())
  95     java_bitmap = gfx::ConvertToJavaBitmap(&bitmap);
  96
  97   base::android::ScopedJavaLocalRef<jobject> ref =
  98       Java_AddToHomescreenDialogHelper_finalizeLauncherIcon(env,
  99                                                       java_url.obj(),
 100                                                       java_bitmap.obj(),
 101                                                       dominant_red,
 102                                                       dominant_green,
 103                                                       dominant_blue);
 104   return gfx::CreateSkBitmapFromJavaBitmap(gfx::JavaBitmap(ref.obj()));
 105 }
 106
 107 void AddToHomescreenDialogHelper::AddShortcut(JNIEnv* env,
 108                                         jobject obj,
 109                                         jstring j_user_title) {
 110   add_shortcut_pending_ = true;
 111
 112   base::string16 user_title =
 113       base::android::ConvertJavaStringToUTF16(env, j_user_title);
 114   if (!user_title.empty())
 115     data_fetcher_->shortcut_info().user_title = user_title;
 116
 117   if (data_fetcher_->is_ready()) {
 118     // If the fetcher isn't ready yet, the shortcut will be added when it is
 119     // via OnDataAvailable();
 120     AddShortcut(data_fetcher_->shortcut_info(), data_fetcher_->shortcut_icon());
 121   }
 122 }
 123
 124 void AddToHomescreenDialogHelper::AddShortcut(const ShortcutInfo& info,
 125                                         const SkBitmap& icon) {
 126   DCHECK(add_shortcut_pending_);
 127   if (!add_shortcut_pending_)
 128     return;
 129   add_shortcut_pending_ = false;
 130
 131   RecordAddToHomescreen();
 132
 133   content::BrowserThread::PostTask(
 134       content::BrowserThread::IO,
 135       FROM_HERE,
 136       base::Bind(&ShortcutHelper::AddShortcutInBackgroundWithSkBitmap,
 137                  info,
 138                  icon));
 139 }
 140
 141 bool AddToHomescreenDialogHelper::RegisterAddToHomescreenDialogHelper(
 142       JNIEnv* env) {
 143   return RegisterNativesImpl(env);
 144 }
 145
 146 void AddToHomescreenDialogHelper::RecordAddToHomescreen() {
 147   // Record that the shortcut has been added, so no banners will be shown
 148   // for this app.
 149   content::WebContents* web_contents = data_fetcher_->web_contents();
 150   if (!web_contents)
 151     return;
 152
 153   AppBannerSettingsHelper::RecordBannerEvent(
 154       web_contents, web_contents->GetURL(),
 155       data_fetcher_->shortcut_info().url.spec(),
 156       AppBannerSettingsHelper::APP_BANNER_EVENT_DID_ADD_TO_HOMESCREEN,
 157       base::Time::Now());
 158 }