src/chrome/browser/ui/tab_contents/core_tab_helper.cc

   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 #include "chrome/browser/ui/tab_contents/core_tab_helper.h"
   6
   7 #include <string>
   8 #include <vector>
   9
  10 #include "base/command_line.h"
  11 #include "base/metrics/histogram.h"
  12 #include "base/strings/stringprintf.h"
  13 #include "chrome/browser/profiles/profile.h"
  14 #include "chrome/browser/renderer_host/web_cache_manager.h"
  15 #include "chrome/browser/search_engines/search_terms_data.h"
  16 #include "chrome/browser/search_engines/template_url.h"
  17 #include "chrome/browser/search_engines/template_url_service.h"
  18 #include "chrome/browser/search_engines/template_url_service_factory.h"
  19 #include "chrome/browser/ui/browser.h"
  20 #include "chrome/browser/ui/browser_command_controller.h"
  21 #include "chrome/browser/ui/browser_finder.h"
  22 #include "chrome/common/chrome_switches.h"
  23 #include "chrome/common/render_messages.h"
  24 #include "content/public/browser/render_process_host.h"
  25 #include "content/public/browser/render_view_host.h"
  26 #include "content/public/browser/web_contents.h"
  27 #include "grit/generated_resources.h"
  28 #include "net/base/load_states.h"
  29 #include "net/http/http_request_headers.h"
  30 #include "third_party/skia/include/core/SkBitmap.h"
  31 #include "ui/base/l10n/l10n_util.h"
  32 #include "ui/gfx/codec/jpeg_codec.h"
  33
  34 using content::WebContents;
  35
  36 DEFINE_WEB_CONTENTS_USER_DATA_KEY(CoreTabHelper);
  37
  38 CoreTabHelper::CoreTabHelper(WebContents* web_contents)
  39     : content::WebContentsObserver(web_contents),
  40       delegate_(NULL),
  41       content_restrictions_(0) {
  42 }
  43
  44 CoreTabHelper::~CoreTabHelper() {
  45 }
  46
  47 base::string16 CoreTabHelper::GetDefaultTitle() {
  48   return l10n_util::GetStringUTF16(IDS_DEFAULT_TAB_TITLE);
  49 }
  50
  51 base::string16 CoreTabHelper::GetStatusText() const {
  52   if (!web_contents()->IsLoading() ||
  53       web_contents()->GetLoadState().state == net::LOAD_STATE_IDLE) {
  54     return base::string16();
  55   }
  56
  57   switch (web_contents()->GetLoadState().state) {
  58     case net::LOAD_STATE_WAITING_FOR_STALLED_SOCKET_POOL:
  59     case net::LOAD_STATE_WAITING_FOR_AVAILABLE_SOCKET:
  60       return l10n_util::GetStringUTF16(IDS_LOAD_STATE_WAITING_FOR_SOCKET_SLOT);
  61     case net::LOAD_STATE_WAITING_FOR_DELEGATE:
  62       if (!web_contents()->GetLoadState().param.empty()) {
  63         return l10n_util::GetStringFUTF16(IDS_LOAD_STATE_WAITING_FOR_DELEGATE,
  64                                           web_contents()->GetLoadState().param);
  65       } else {
  66         return l10n_util::GetStringUTF16(
  67             IDS_LOAD_STATE_WAITING_FOR_DELEGATE_GENERIC);
  68       }
  69     case net::LOAD_STATE_WAITING_FOR_CACHE:
  70       return l10n_util::GetStringUTF16(IDS_LOAD_STATE_WAITING_FOR_CACHE);
  71     case net::LOAD_STATE_WAITING_FOR_APPCACHE:
  72       return l10n_util::GetStringUTF16(IDS_LOAD_STATE_WAITING_FOR_APPCACHE);
  73     case net::LOAD_STATE_ESTABLISHING_PROXY_TUNNEL:
  74       return
  75           l10n_util::GetStringUTF16(IDS_LOAD_STATE_ESTABLISHING_PROXY_TUNNEL);
  76     case net::LOAD_STATE_DOWNLOADING_PROXY_SCRIPT:
  77       return l10n_util::GetStringUTF16(IDS_LOAD_STATE_DOWNLOADING_PROXY_SCRIPT);
  78     case net::LOAD_STATE_RESOLVING_PROXY_FOR_URL:
  79       return l10n_util::GetStringUTF16(IDS_LOAD_STATE_RESOLVING_PROXY_FOR_URL);
  80     case net::LOAD_STATE_RESOLVING_HOST_IN_PROXY_SCRIPT:
  81       return l10n_util::GetStringUTF16(
  82           IDS_LOAD_STATE_RESOLVING_HOST_IN_PROXY_SCRIPT);
  83     case net::LOAD_STATE_RESOLVING_HOST:
  84       return l10n_util::GetStringUTF16(IDS_LOAD_STATE_RESOLVING_HOST);
  85     case net::LOAD_STATE_CONNECTING:
  86       return l10n_util::GetStringUTF16(IDS_LOAD_STATE_CONNECTING);
  87     case net::LOAD_STATE_SSL_HANDSHAKE:
  88       return l10n_util::GetStringUTF16(IDS_LOAD_STATE_SSL_HANDSHAKE);
  89     case net::LOAD_STATE_SENDING_REQUEST:
  90       if (web_contents()->GetUploadSize()) {
  91         return l10n_util::GetStringFUTF16Int(
  92             IDS_LOAD_STATE_SENDING_REQUEST_WITH_PROGRESS,
  93             static_cast<int>((100 * web_contents()->GetUploadPosition()) /
  94                 web_contents()->GetUploadSize()));
  95       } else {
  96         return l10n_util::GetStringUTF16(IDS_LOAD_STATE_SENDING_REQUEST);
  97       }
  98     case net::LOAD_STATE_WAITING_FOR_RESPONSE:
  99       return l10n_util::GetStringFUTF16(IDS_LOAD_STATE_WAITING_FOR_RESPONSE,
 100                                         web_contents()->GetLoadStateHost());
 101     // Ignore net::LOAD_STATE_READING_RESPONSE and net::LOAD_STATE_IDLE
 102     case net::LOAD_STATE_IDLE:
 103     case net::LOAD_STATE_READING_RESPONSE:
 104       break;
 105   }
 106
 107   return base::string16();
 108 }
 109
 110 void CoreTabHelper::OnCloseStarted() {
 111   if (close_start_time_.is_null())
 112     close_start_time_ = base::TimeTicks::Now();
 113 }
 114
 115 void CoreTabHelper::OnCloseCanceled() {
 116   close_start_time_ = base::TimeTicks();
 117   before_unload_end_time_ = base::TimeTicks();
 118   unload_detached_start_time_ = base::TimeTicks();
 119 }
 120
 121 void CoreTabHelper::OnUnloadStarted() {
 122   before_unload_end_time_ = base::TimeTicks::Now();
 123 }
 124
 125 void CoreTabHelper::OnUnloadDetachedStarted() {
 126   if (unload_detached_start_time_.is_null())
 127     unload_detached_start_time_ = base::TimeTicks::Now();
 128 }
 129
 130 void CoreTabHelper::UpdateContentRestrictions(int content_restrictions) {
 131   content_restrictions_ = content_restrictions;
 132 #if !defined(OS_ANDROID)
 133   Browser* browser = chrome::FindBrowserWithWebContents(web_contents());
 134   if (!browser)
 135     return;
 136
 137   browser->command_controller()->ContentRestrictionsChanged();
 138 #endif
 139 }
 140
 141 ////////////////////////////////////////////////////////////////////////////////
 142 // WebContentsObserver overrides
 143
 144 void CoreTabHelper::DidStartLoading(content::RenderViewHost* render_view_host) {
 145   UpdateContentRestrictions(0);
 146 }
 147
 148 void CoreTabHelper::WasShown() {
 149   WebCacheManager::GetInstance()->ObserveActivity(
 150       web_contents()->GetRenderProcessHost()->GetID());
 151 }
 152
 153 void CoreTabHelper::WebContentsDestroyed() {
 154   // OnCloseStarted isn't called in unit tests.
 155   if (!close_start_time_.is_null()) {
 156     bool fast_tab_close_enabled = CommandLine::ForCurrentProcess()->HasSwitch(
 157         switches::kEnableFastUnload);
 158
 159     if (fast_tab_close_enabled) {
 160       base::TimeTicks now = base::TimeTicks::Now();
 161       base::TimeDelta close_time = now - close_start_time_;
 162       UMA_HISTOGRAM_TIMES("Tab.Close", close_time);
 163
 164       base::TimeTicks unload_start_time = close_start_time_;
 165       base::TimeTicks unload_end_time = now;
 166       if (!before_unload_end_time_.is_null())
 167         unload_start_time = before_unload_end_time_;
 168       if (!unload_detached_start_time_.is_null())
 169         unload_end_time = unload_detached_start_time_;
 170       base::TimeDelta unload_time = unload_end_time - unload_start_time;
 171       UMA_HISTOGRAM_TIMES("Tab.Close.UnloadTime", unload_time);
 172     } else {
 173       base::TimeTicks now = base::TimeTicks::Now();
 174       base::TimeTicks unload_start_time = close_start_time_;
 175       if (!before_unload_end_time_.is_null())
 176         unload_start_time = before_unload_end_time_;
 177       UMA_HISTOGRAM_TIMES("Tab.Close", now - close_start_time_);
 178       UMA_HISTOGRAM_TIMES("Tab.Close.UnloadTime", now - unload_start_time);
 179     }
 180   }
 181 }
 182
 183 void CoreTabHelper::BeforeUnloadFired(const base::TimeTicks& proceed_time) {
 184   before_unload_end_time_ = proceed_time;
 185 }
 186
 187 void CoreTabHelper::BeforeUnloadDialogCancelled() {
 188   OnCloseCanceled();
 189 }
 190
 191 bool CoreTabHelper::OnMessageReceived(const IPC::Message& message) {
 192   bool handled = true;
 193   IPC_BEGIN_MESSAGE_MAP(CoreTabHelper, message)
 194     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_RequestThumbnailForContextNode_ACK,
 195                         OnRequestThumbnailForContextNodeACK)
 196     IPC_MESSAGE_UNHANDLED(handled = false)
 197   IPC_END_MESSAGE_MAP()
 198   return handled;
 199 }
 200
 201 // Handles the image thumbnail for the context node, composes a image search
 202 // request based on the received thumbnail and opens the request in a new tab.
 203 void CoreTabHelper::OnRequestThumbnailForContextNodeACK(
 204     const SkBitmap& bitmap,
 205     const gfx::Size& original_size) {
 206   if (bitmap.isNull())
 207     return;
 208   Profile* profile =
 209       Profile::FromBrowserContext(web_contents()->GetBrowserContext());
 210
 211   TemplateURLService* template_url_service =
 212       TemplateURLServiceFactory::GetForProfile(profile);
 213   if (!template_url_service)
 214     return;
 215   const TemplateURL* const default_provider =
 216       template_url_service->GetDefaultSearchProvider();
 217   if (!default_provider)
 218     return;
 219
 220   const int kDefaultQualityForImageSearch = 90;
 221   std::vector<unsigned char> data;
 222   if (!gfx::JPEGCodec::Encode(
 223       reinterpret_cast<unsigned char*>(bitmap.getAddr32(0, 0)),
 224       gfx::JPEGCodec::FORMAT_SkBitmap, bitmap.width(), bitmap.height(),
 225       static_cast<int>(bitmap.rowBytes()), kDefaultQualityForImageSearch,
 226       &data))
 227     return;
 228
 229   TemplateURLRef::SearchTermsArgs search_args =
 230       TemplateURLRef::SearchTermsArgs(base::string16());
 231   search_args.image_thumbnail_content = std::string(data.begin(), data.end());
 232   // TODO(jnd): Add a method in WebContentsViewDelegate to get the image URL
 233   // from the ContextMenuParams which creates current context menu.
 234   search_args.image_url = GURL();
 235   search_args.image_original_size = original_size;
 236   TemplateURLRef::PostContent post_content;
 237   GURL result(default_provider->image_url_ref().ReplaceSearchTerms(
 238       search_args, &post_content));
 239   if (!result.is_valid())
 240     return;
 241
 242   content::OpenURLParams open_url_params(
 243       result, content::Referrer(), NEW_FOREGROUND_TAB,
 244       content::PAGE_TRANSITION_LINK, false);
 245   const std::string& content_type = post_content.first;
 246   std::string* post_data = &post_content.second;
 247   if (!post_data->empty()) {
 248     DCHECK(!content_type.empty());
 249     open_url_params.uses_post = true;
 250     open_url_params.browser_initiated_post_data =
 251         base::RefCountedString::TakeString(post_data);
 252     open_url_params.extra_headers += base::StringPrintf(
 253         "%s: %s\r\n", net::HttpRequestHeaders::kContentType,
 254         content_type.c_str());
 255   }
 256   web_contents()->OpenURL(open_url_params);
 257 }