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      1 // Copyright (c) 2011 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/webui/downloads_ui.h"
      6 
      7 #include "base/memory/singleton.h"
      8 #include "base/string_piece.h"
      9 #include "base/threading/thread.h"
     10 #include "base/values.h"
     11 #include "chrome/browser/defaults.h"
     12 #include "chrome/browser/download/download_manager.h"
     13 #include "chrome/browser/profiles/profile.h"
     14 #include "chrome/browser/ui/webui/chrome_url_data_manager.h"
     15 #include "chrome/browser/ui/webui/downloads_dom_handler.h"
     16 #include "chrome/common/jstemplate_builder.h"
     17 #include "chrome/common/url_constants.h"
     18 #include "content/browser/browser_thread.h"
     19 #include "content/browser/tab_contents/tab_contents.h"
     20 #include "grit/browser_resources.h"
     21 #include "grit/generated_resources.h"
     22 #include "grit/theme_resources.h"
     23 #include "ui/base/l10n/l10n_util.h"
     24 #include "ui/base/resource/resource_bundle.h"
     25 
     26 namespace {
     27 
     28 ///////////////////////////////////////////////////////////////////////////////
     29 //
     30 // DownloadsHTMLSource
     31 //
     32 ///////////////////////////////////////////////////////////////////////////////
     33 
     34 class DownloadsUIHTMLSource : public ChromeURLDataManager::DataSource {
     35  public:
     36   DownloadsUIHTMLSource();
     37 
     38   // Called when the network layer has requested a resource underneath
     39   // the path we registered.
     40   virtual void StartDataRequest(const std::string& path,
     41                                 bool is_incognito,
     42                                 int request_id);
     43   virtual std::string GetMimeType(const std::string&) const {
     44     return "text/html";
     45   }
     46 
     47  private:
     48   ~DownloadsUIHTMLSource() {}
     49 
     50   DISALLOW_COPY_AND_ASSIGN(DownloadsUIHTMLSource);
     51 };
     52 
     53 DownloadsUIHTMLSource::DownloadsUIHTMLSource()
     54     : DataSource(chrome::kChromeUIDownloadsHost, MessageLoop::current()) {
     55 }
     56 
     57 void DownloadsUIHTMLSource::StartDataRequest(const std::string& path,
     58                                              bool is_incognito,
     59                                              int request_id) {
     60   DictionaryValue localized_strings;
     61   localized_strings.SetString("title",
     62       l10n_util::GetStringUTF16(IDS_DOWNLOAD_TITLE));
     63   localized_strings.SetString("searchbutton",
     64       l10n_util::GetStringUTF16(IDS_DOWNLOAD_SEARCH_BUTTON));
     65   localized_strings.SetString("no_results",
     66       l10n_util::GetStringUTF16(IDS_DOWNLOAD_SEARCH_BUTTON));
     67   localized_strings.SetString("searchresultsfor",
     68       l10n_util::GetStringUTF16(IDS_DOWNLOAD_SEARCHRESULTSFOR));
     69   localized_strings.SetString("downloads",
     70       l10n_util::GetStringUTF16(IDS_DOWNLOAD_TITLE));
     71   localized_strings.SetString("clear_all",
     72       l10n_util::GetStringUTF16(IDS_DOWNLOAD_LINK_CLEAR_ALL));
     73 
     74   // Status.
     75   localized_strings.SetString("status_cancelled",
     76       l10n_util::GetStringUTF16(IDS_DOWNLOAD_TAB_CANCELED));
     77   localized_strings.SetString("status_paused",
     78       l10n_util::GetStringUTF16(IDS_DOWNLOAD_PROGRESS_PAUSED));
     79   localized_strings.SetString("status_interrupted",
     80       l10n_util::GetStringUTF16(IDS_DOWNLOAD_PROGRESS_INTERRUPTED));
     81 
     82   // Dangerous file.
     83   localized_strings.SetString("danger_file_desc",
     84       l10n_util::GetStringUTF16(IDS_PROMPT_DANGEROUS_DOWNLOAD));
     85   localized_strings.SetString("danger_url_desc",
     86       l10n_util::GetStringUTF16(IDS_PROMPT_UNSAFE_DOWNLOAD_URL));
     87   localized_strings.SetString("danger_save",
     88       l10n_util::GetStringUTF16(IDS_SAVE_DOWNLOAD));
     89   localized_strings.SetString("danger_discard",
     90       l10n_util::GetStringUTF16(IDS_DISCARD_DOWNLOAD));
     91 
     92   // Controls.
     93   localized_strings.SetString("control_pause",
     94       l10n_util::GetStringUTF16(IDS_DOWNLOAD_LINK_PAUSE));
     95   if (browser_defaults::kDownloadPageHasShowInFolder) {
     96     localized_strings.SetString("control_showinfolder",
     97         l10n_util::GetStringUTF16(IDS_DOWNLOAD_LINK_SHOW));
     98   }
     99   localized_strings.SetString("control_retry",
    100       l10n_util::GetStringUTF16(IDS_DOWNLOAD_LINK_RETRY));
    101   localized_strings.SetString("control_cancel",
    102       l10n_util::GetStringUTF16(IDS_DOWNLOAD_LINK_CANCEL));
    103   localized_strings.SetString("control_resume",
    104       l10n_util::GetStringUTF16(IDS_DOWNLOAD_LINK_RESUME));
    105   localized_strings.SetString("control_removefromlist",
    106       l10n_util::GetStringUTF16(IDS_DOWNLOAD_LINK_REMOVE));
    107 
    108   SetFontAndTextDirection(&localized_strings);
    109 
    110   static const base::StringPiece downloads_html(
    111       ResourceBundle::GetSharedInstance().GetRawDataResource(
    112           IDR_DOWNLOADS_HTML));
    113   const std::string full_html = jstemplate_builder::GetI18nTemplateHtml(
    114       downloads_html, &localized_strings);
    115 
    116   scoped_refptr<RefCountedBytes> html_bytes(new RefCountedBytes);
    117   html_bytes->data.resize(full_html.size());
    118   std::copy(full_html.begin(), full_html.end(), html_bytes->data.begin());
    119 
    120   SendResponse(request_id, html_bytes);
    121 }
    122 
    123 }  // namespace
    124 
    125 ///////////////////////////////////////////////////////////////////////////////
    126 //
    127 // DownloadsUI
    128 //
    129 ///////////////////////////////////////////////////////////////////////////////
    130 
    131 DownloadsUI::DownloadsUI(TabContents* contents) : WebUI(contents) {
    132   DownloadManager* dlm = GetProfile()->GetDownloadManager();
    133 
    134   DownloadsDOMHandler* handler = new DownloadsDOMHandler(dlm);
    135   AddMessageHandler(handler);
    136   handler->Attach(this);
    137   handler->Init();
    138 
    139   DownloadsUIHTMLSource* html_source = new DownloadsUIHTMLSource();
    140 
    141   // Set up the chrome://downloads/ source.
    142   contents->profile()->GetChromeURLDataManager()->AddDataSource(html_source);
    143 }
    144 
    145 // static
    146 RefCountedMemory* DownloadsUI::GetFaviconResourceBytes() {
    147   return ResourceBundle::GetSharedInstance().
    148       LoadDataResourceBytes(IDR_DOWNLOADS_FAVICON);
    149 }
    150