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      1 // Copyright 2013 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/ui/android/context_menu_helper.h"
      6 
      7 #include "base/android/jni_android.h"
      8 #include "base/android/jni_string.h"
      9 #include "content/public/browser/android/content_view_core.h"
     10 #include "content/public/browser/android/download_controller_android.h"
     11 #include "content/public/common/context_menu_params.h"
     12 #include "jni/ContextMenuHelper_jni.h"
     13 #include "jni/ContextMenuParams_jni.h"
     14 #include "ui/gfx/point.h"
     15 
     16 using base::android::ConvertUTF8ToJavaString;
     17 using base::android::ConvertUTF16ToJavaString;
     18 using base::android::ScopedJavaLocalRef;
     19 
     20 DEFINE_WEB_CONTENTS_USER_DATA_KEY(ContextMenuHelper);
     21 
     22 ContextMenuHelper::ContextMenuHelper(content::WebContents* web_contents)
     23     : web_contents_(web_contents) {
     24   JNIEnv* env = base::android::AttachCurrentThread();
     25   java_obj_.Reset(
     26       env,
     27       Java_ContextMenuHelper_create(env, reinterpret_cast<long>(this)).obj());
     28   DCHECK(!java_obj_.is_null());
     29 }
     30 
     31 ContextMenuHelper::~ContextMenuHelper() {
     32   JNIEnv* env = base::android::AttachCurrentThread();
     33   Java_ContextMenuHelper_destroy(env, java_obj_.obj());
     34 }
     35 
     36 void ContextMenuHelper::ShowContextMenu(
     37     const content::ContextMenuParams& params) {
     38   content::ContentViewCore* content_view_core =
     39       content::ContentViewCore::FromWebContents(web_contents_);
     40 
     41   if (!content_view_core)
     42     return;
     43 
     44   JNIEnv* env = base::android::AttachCurrentThread();
     45   context_menu_params_ = params;
     46   Java_ContextMenuHelper_showContextMenu(
     47       env,
     48       java_obj_.obj(),
     49       content_view_core->GetJavaObject().obj(),
     50       ContextMenuHelper::CreateJavaContextMenuParams(params).obj());
     51 }
     52 
     53 // Called to show a custom context menu. Used by the NTP.
     54 void ContextMenuHelper::ShowCustomContextMenu(
     55     const content::ContextMenuParams& params,
     56     const base::Callback<void(int)>& callback) {
     57   context_menu_callback_ = callback;
     58   ShowContextMenu(params);
     59 }
     60 
     61 void ContextMenuHelper::SetPopulator(jobject jpopulator) {
     62   JNIEnv* env = base::android::AttachCurrentThread();
     63   Java_ContextMenuHelper_setPopulator(env, java_obj_.obj(), jpopulator);
     64 }
     65 
     66 base::android::ScopedJavaLocalRef<jobject>
     67 ContextMenuHelper::CreateJavaContextMenuParams(
     68     const content::ContextMenuParams& params) {
     69   JNIEnv* env = base::android::AttachCurrentThread();
     70   base::android::ScopedJavaLocalRef<jobject> jmenu_info =
     71       ContextMenuParamsAndroid::Java_ContextMenuParams_create(
     72           env,
     73           params.media_type,
     74           ConvertUTF8ToJavaString(env, params.link_url.spec()).obj(),
     75           ConvertUTF16ToJavaString(env, params.link_text).obj(),
     76           ConvertUTF8ToJavaString(env, params.unfiltered_link_url.spec()).obj(),
     77           ConvertUTF8ToJavaString(env, params.src_url.spec()).obj(),
     78           ConvertUTF16ToJavaString(env, params.selection_text).obj(),
     79           params.is_editable);
     80 
     81   std::vector<content::MenuItem>::const_iterator i;
     82   for (i = params.custom_items.begin(); i != params.custom_items.end(); ++i) {
     83     ContextMenuParamsAndroid::Java_ContextMenuParams_addCustomItem(
     84         env,
     85         jmenu_info.obj(),
     86         ConvertUTF16ToJavaString(env, i->label).obj(),
     87         i->action);
     88   }
     89 
     90   return jmenu_info;
     91 }
     92 
     93 void ContextMenuHelper::OnCustomItemSelected(JNIEnv* env,
     94                                              jobject obj,
     95                                              jint action) {
     96   if (!context_menu_callback_.is_null()) {
     97     context_menu_callback_.Run(action);
     98     context_menu_callback_.Reset();
     99   }
    100 }
    101 
    102 void ContextMenuHelper::OnStartDownload(JNIEnv* env,
    103                                         jobject obj,
    104                                         jboolean jis_link) {
    105   content::DownloadControllerAndroid::Get()->StartContextMenuDownload(
    106       context_menu_params_,
    107       web_contents_,
    108       jis_link);
    109 }
    110 
    111 bool RegisterContextMenuHelper(JNIEnv* env) {
    112   return RegisterNativesImpl(env) &&
    113          ContextMenuParamsAndroid::RegisterNativesImpl(env);
    114 }
    115