content/browser/android/download_controller_android_impl.h

   1 // Copyright (c) 2012 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 // This class pairs with DownloadController on Java side to forward requests
   6 // for GET downloads to the current DownloadListener. POST downloads are
   7 // handled on the native side.
   8 //
   9 // Both classes are Singleton classes. C++ object owns Java object.
  10 //
  11 // Call sequence
  12 // GET downloads:
  13 // DownloadControllerAndroid::CreateGETDownload() =>
  14 // DownloadController.newHttpGetDownload() =>
  15 // DownloadListener.onDownloadStart() /
  16 // DownloadListener2.requestHttpGetDownload()
  17 //
  18
  19 #ifndef CONTENT_BROWSER_ANDROID_DOWNLOAD_CONTROLLER_ANDROID_IMPL_H_
  20 #define CONTENT_BROWSER_ANDROID_DOWNLOAD_CONTROLLER_ANDROID_IMPL_H_
  21
  22 #include <string>
  23
  24 #include "base/android/jni_helper.h"
  25 #include "base/android/scoped_java_ref.h"
  26 #include "base/callback.h"
  27 #include "base/memory/singleton.h"
  28 #include "content/public/browser/android/download_controller_android.h"
  29 #include "content/public/browser/download_item.h"
  30 #include "net/cookies/cookie_monster.h"
  31 #include "url/gurl.h"
  32
  33 namespace net {
  34 class URLRequest;
  35 }
  36
  37 namespace content {
  38 struct GlobalRequestID;
  39 class RenderViewHost;
  40 class WebContents;
  41
  42 class DownloadControllerAndroidImpl : public DownloadControllerAndroid,
  43                                       public DownloadItem::Observer {
  44  public:
  45   static DownloadControllerAndroidImpl* GetInstance();
  46
  47   static bool RegisterDownloadController(JNIEnv* env);
  48
  49   // Called when DownloadController Java object is instantiated.
  50   void Init(JNIEnv* env, jobject obj);
  51  private:
  52   // Used to store all the information about an Android download.
  53   struct DownloadInfoAndroid {
  54     explicit DownloadInfoAndroid(net::URLRequest* request);
  55     ~DownloadInfoAndroid();
  56
  57     // The URL from which we are downloading. This is the final URL after any
  58     // redirection by the server for |original_url_|.
  59     GURL url;
  60     // The original URL before any redirection by the server for this URL.
  61     GURL original_url;
  62     int64 total_bytes;
  63     std::string content_disposition;
  64     std::string original_mime_type;
  65     std::string user_agent;
  66     std::string cookie;
  67     std::string referer;
  68
  69     WebContents* web_contents;
  70     // Default copy constructor is used for passing this struct by value.
  71   };
  72   struct JavaObject;
  73   friend struct DefaultSingletonTraits<DownloadControllerAndroidImpl>;
  74   DownloadControllerAndroidImpl();
  75   virtual ~DownloadControllerAndroidImpl();
  76
  77   // DownloadControllerAndroid implementation.
  78   virtual void CreateGETDownload(int render_process_id, int render_view_id,
  79                                  int request_id) OVERRIDE;
  80   virtual void OnDownloadStarted(DownloadItem* download_item) OVERRIDE;
  81   virtual void StartContextMenuDownload(
  82       const ContextMenuParams& params, WebContents* web_contents,
  83       bool is_link) OVERRIDE;
  84   virtual void DangerousDownloadValidated(
  85       WebContents* web_contents, int download_id, bool accept) OVERRIDE;
  86
  87   // DownloadItem::Observer interface.
  88   virtual void OnDownloadUpdated(DownloadItem* item) OVERRIDE;
  89
  90   typedef base::Callback<void(const DownloadInfoAndroid&)>
  91       GetDownloadInfoCB;
  92   void PrepareDownloadInfo(const GlobalRequestID& global_id,
  93                            const GetDownloadInfoCB& callback);
  94   void CheckPolicyAndLoadCookies(const DownloadInfoAndroid& info,
  95                                  const GetDownloadInfoCB& callback,
  96                                  const GlobalRequestID& global_id,
  97                                  const net::CookieList& cookie_list);
  98   void DoLoadCookies(const DownloadInfoAndroid& info,
  99                      const GetDownloadInfoCB& callback,
 100                      const GlobalRequestID& global_id);
 101   void OnCookieResponse(DownloadInfoAndroid info,
 102                         const GetDownloadInfoCB& callback,
 103                         const std::string& cookie);
 104   void StartDownloadOnUIThread(const GetDownloadInfoCB& callback,
 105                                const DownloadInfoAndroid& info);
 106   void StartAndroidDownload(int render_process_id,
 107                             int render_view_id,
 108                             const DownloadInfoAndroid& info);
 109
 110   // The download item contains dangerous file types.
 111   void OnDangerousDownload(DownloadItem *item);
 112
 113   base::android::ScopedJavaLocalRef<jobject> GetContentViewCoreFromWebContents(
 114       WebContents* web_contents);
 115
 116   base::android::ScopedJavaLocalRef<jobject> GetContentView(
 117       int render_process_id, int render_view_id);
 118
 119   // Creates Java object if it is not created already and returns it.
 120   JavaObject* GetJavaObject();
 121
 122   JavaObject* java_object_;
 123
 124   DISALLOW_COPY_AND_ASSIGN(DownloadControllerAndroidImpl);
 125 };
 126
 127 }  // namespace content
 128
 129 #endif  // CONTENT_BROWSER_ANDROID_DOWNLOAD_CONTROLLER_ANDROID_IMPL_H_