src/chrome/browser/ui/views/download/download_danger_prompt_views.cc

   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 "base/compiler_specific.h"
   6 #include "chrome/browser/download/download_danger_prompt.h"
   7 #include "chrome/browser/download/download_stats.h"
   8 #include "components/web_modal/web_contents_modal_dialog_host.h"
   9 #include "components/web_modal/web_contents_modal_dialog_manager.h"
  10 #include "components/web_modal/web_contents_modal_dialog_manager_delegate.h"
  11 #include "content/public/browser/browser_thread.h"
  12 #include "content/public/browser/download_danger_type.h"
  13 #include "content/public/browser/download_item.h"
  14 #include "content/public/browser/web_contents.h"
  15 #include "grit/chromium_strings.h"
  16 #include "grit/generated_resources.h"
  17 #include "ui/base/l10n/l10n_util.h"
  18 #include "ui/base/resource/resource_bundle.h"
  19 #include "ui/views/controls/button/label_button.h"
  20 #include "ui/views/controls/label.h"
  21 #include "ui/views/layout/grid_layout.h"
  22 #include "ui/views/view.h"
  23 #include "ui/views/widget/widget.h"
  24 #include "ui/views/window/dialog_client_view.h"
  25 #include "ui/views/window/dialog_delegate.h"
  26
  27 using content::BrowserThread;
  28 using web_modal::WebContentsModalDialogManager;
  29 using web_modal::WebContentsModalDialogManagerDelegate;
  30
  31 namespace {
  32
  33 const int kMessageWidth = 320;
  34 const int kParagraphPadding = 15;
  35
  36 // Views-specific implementation of download danger prompt dialog. We use this
  37 // class rather than a TabModalConfirmDialog so that we can use custom
  38 // formatting on the text in the body of the dialog.
  39 class DownloadDangerPromptViews : public DownloadDangerPrompt,
  40                                   public content::DownloadItem::Observer,
  41                                   public views::DialogDelegate {
  42  public:
  43   DownloadDangerPromptViews(content::DownloadItem* item,
  44                             content::WebContents* web_contents,
  45                             bool show_context,
  46                             const OnDone& done);
  47
  48   // DownloadDangerPrompt methods:
  49   virtual void InvokeActionForTesting(Action action) OVERRIDE;
  50
  51   // views::DialogDelegate methods:
  52   virtual base::string16 GetDialogButtonLabel(
  53       ui::DialogButton button) const OVERRIDE;
  54   virtual base::string16 GetWindowTitle() const OVERRIDE;
  55   virtual void DeleteDelegate() OVERRIDE;
  56   virtual ui::ModalType GetModalType() const OVERRIDE;
  57   virtual bool Cancel() OVERRIDE;
  58   virtual bool Accept() OVERRIDE;
  59   virtual bool Close() OVERRIDE;
  60   virtual views::View* GetInitiallyFocusedView() OVERRIDE;
  61   virtual views::View* GetContentsView() OVERRIDE;
  62   virtual views::Widget* GetWidget() OVERRIDE;
  63   virtual const views::Widget* GetWidget() const OVERRIDE;
  64
  65   // content::DownloadItem::Observer:
  66   virtual void OnDownloadUpdated(content::DownloadItem* download) OVERRIDE;
  67
  68  private:
  69   base::string16 GetAcceptButtonTitle() const;
  70   base::string16 GetCancelButtonTitle() const;
  71   // The message lead is separated from the main text and is bolded.
  72   base::string16 GetMessageLead() const;
  73   base::string16 GetMessageBody() const;
  74   void RunDone(Action action);
  75
  76   content::DownloadItem* download_;
  77   bool show_context_;
  78   OnDone done_;
  79
  80   views::View* contents_view_;
  81 };
  82
  83 DownloadDangerPromptViews::DownloadDangerPromptViews(
  84     content::DownloadItem* item,
  85     content::WebContents* web_contents,
  86     bool show_context,
  87     const OnDone& done)
  88     : download_(item),
  89       show_context_(show_context),
  90       done_(done),
  91       contents_view_(NULL) {
  92   DCHECK(!done_.is_null());
  93   download_->AddObserver(this);
  94
  95   contents_view_ = new views::View;
  96
  97   views::GridLayout* layout = views::GridLayout::CreatePanel(contents_view_);
  98   contents_view_->SetLayoutManager(layout);
  99
 100   views::ColumnSet* column_set = layout->AddColumnSet(0);
 101   column_set->AddColumn(views::GridLayout::FILL, views::GridLayout::FILL, 1,
 102                         views::GridLayout::FIXED, kMessageWidth, 0);
 103
 104   const base::string16 message_lead = GetMessageLead();
 105
 106   if (!message_lead.empty()) {
 107     ui::ResourceBundle* rb = &ui::ResourceBundle::GetSharedInstance();
 108     views::Label* message_lead_label = new views::Label(
 109         message_lead, rb->GetFontList(ui::ResourceBundle::BoldFont));
 110     message_lead_label->SetMultiLine(true);
 111     message_lead_label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
 112     message_lead_label->SetAllowCharacterBreak(true);
 113
 114     layout->StartRow(0, 0);
 115     layout->AddView(message_lead_label);
 116
 117     layout->AddPaddingRow(0, kParagraphPadding);
 118   }
 119
 120   views::Label* message_body_label = new views::Label(GetMessageBody());
 121   message_body_label->SetMultiLine(true);
 122   message_body_label->SetHorizontalAlignment(gfx::ALIGN_LEFT);
 123   message_body_label->SetAllowCharacterBreak(true);
 124
 125   layout->StartRow(0, 0);
 126   layout->AddView(message_body_label);
 127
 128   RecordOpenedDangerousConfirmDialog(download_->GetDangerType());
 129 }
 130
 131 // DownloadDangerPrompt methods:
 132 void DownloadDangerPromptViews::InvokeActionForTesting(Action action) {
 133   switch (action) {
 134     case ACCEPT:
 135       Accept();
 136       break;
 137
 138     case CANCEL:
 139     case DISMISS:
 140       Cancel();
 141       break;
 142
 143     default:
 144       NOTREACHED();
 145       break;
 146   }
 147 }
 148
 149 // views::DialogDelegate methods:
 150 base::string16 DownloadDangerPromptViews::GetDialogButtonLabel(
 151     ui::DialogButton button) const {
 152   switch (button) {
 153     case ui::DIALOG_BUTTON_OK:
 154       return GetAcceptButtonTitle();
 155
 156     case ui::DIALOG_BUTTON_CANCEL:
 157       return GetCancelButtonTitle();
 158
 159     default:
 160       return DialogDelegate::GetDialogButtonLabel(button);
 161   };
 162 }
 163
 164 base::string16 DownloadDangerPromptViews::GetWindowTitle() const {
 165   if (show_context_)
 166     return l10n_util::GetStringUTF16(IDS_CONFIRM_KEEP_DANGEROUS_DOWNLOAD_TITLE);
 167   else
 168     return l10n_util::GetStringUTF16(IDS_RESTORE_KEEP_DANGEROUS_DOWNLOAD_TITLE);
 169 }
 170
 171 void DownloadDangerPromptViews::DeleteDelegate() {
 172   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 173
 174   delete this;
 175 }
 176
 177 ui::ModalType DownloadDangerPromptViews::GetModalType() const {
 178 #if defined(USE_ASH)
 179   return ui::MODAL_TYPE_CHILD;
 180 #else
 181   return views::WidgetDelegate::GetModalType();
 182 #endif
 183 }
 184
 185 bool DownloadDangerPromptViews::Cancel() {
 186   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 187
 188   RunDone(CANCEL);
 189   return true;
 190 }
 191
 192 bool DownloadDangerPromptViews::Accept() {
 193   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 194
 195   RunDone(ACCEPT);
 196   return true;
 197 }
 198
 199 bool DownloadDangerPromptViews::Close() {
 200   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 201
 202   RunDone(DISMISS);
 203   return true;
 204 }
 205
 206 views::View* DownloadDangerPromptViews::GetInitiallyFocusedView() {
 207   return GetDialogClientView()->cancel_button();
 208 }
 209
 210 views::View* DownloadDangerPromptViews::GetContentsView() {
 211   return contents_view_;
 212 }
 213
 214 views::Widget* DownloadDangerPromptViews::GetWidget() {
 215   return contents_view_->GetWidget();
 216 }
 217
 218 const views::Widget* DownloadDangerPromptViews::GetWidget() const {
 219   return contents_view_->GetWidget();
 220 }
 221
 222 // content::DownloadItem::Observer:
 223 void DownloadDangerPromptViews::OnDownloadUpdated(
 224     content::DownloadItem* download) {
 225   // If the download is nolonger dangerous (accepted externally) or the download
 226   // is in a terminal state, then the download danger prompt is no longer
 227   // necessary.
 228   if (!download_->IsDangerous() || download_->IsDone()) {
 229     RunDone(DISMISS);
 230     Cancel();
 231   }
 232 }
 233
 234 base::string16 DownloadDangerPromptViews::GetAcceptButtonTitle() const {
 235   if (show_context_)
 236     return l10n_util::GetStringUTF16(IDS_CONFIRM_DOWNLOAD);
 237   switch (download_->GetDangerType()) {
 238     case content::DOWNLOAD_DANGER_TYPE_DANGEROUS_URL:
 239     case content::DOWNLOAD_DANGER_TYPE_DANGEROUS_CONTENT:
 240     case content::DOWNLOAD_DANGER_TYPE_DANGEROUS_HOST: {
 241       return l10n_util::GetStringUTF16(IDS_CONFIRM_DOWNLOAD_AGAIN_MALICIOUS);
 242     }
 243     default:
 244       return l10n_util::GetStringUTF16(IDS_CONFIRM_DOWNLOAD_AGAIN);
 245   }
 246 }
 247
 248 base::string16 DownloadDangerPromptViews::GetCancelButtonTitle() const {
 249   if (show_context_)
 250     return l10n_util::GetStringUTF16(IDS_CANCEL);
 251   switch (download_->GetDangerType()) {
 252     case content::DOWNLOAD_DANGER_TYPE_DANGEROUS_URL:
 253     case content::DOWNLOAD_DANGER_TYPE_DANGEROUS_CONTENT:
 254     case content::DOWNLOAD_DANGER_TYPE_DANGEROUS_HOST: {
 255       return l10n_util::GetStringUTF16(IDS_CONFIRM_CANCEL_AGAIN_MALICIOUS);
 256     }
 257     default:
 258       return l10n_util::GetStringUTF16(IDS_CANCEL);
 259   }
 260 }
 261
 262 base::string16 DownloadDangerPromptViews::GetMessageLead() const {
 263   if (!show_context_) {
 264     switch (download_->GetDangerType()) {
 265       case content::DOWNLOAD_DANGER_TYPE_DANGEROUS_URL:
 266       case content::DOWNLOAD_DANGER_TYPE_DANGEROUS_CONTENT:
 267       case content::DOWNLOAD_DANGER_TYPE_DANGEROUS_HOST:
 268         return l10n_util::GetStringUTF16(
 269             IDS_PROMPT_CONFIRM_KEEP_MALICIOUS_DOWNLOAD_LEAD);
 270
 271       default:
 272         break;
 273     }
 274   }
 275
 276   return base::string16();
 277 }
 278
 279 base::string16 DownloadDangerPromptViews::GetMessageBody() const {
 280   if (show_context_) {
 281     switch (download_->GetDangerType()) {
 282       case content::DOWNLOAD_DANGER_TYPE_DANGEROUS_FILE: {
 283         return l10n_util::GetStringFUTF16(
 284             IDS_PROMPT_DANGEROUS_DOWNLOAD,
 285             download_->GetFileNameToReportUser().LossyDisplayName());
 286       }
 287       case content::DOWNLOAD_DANGER_TYPE_DANGEROUS_URL:  // Fall through
 288       case content::DOWNLOAD_DANGER_TYPE_DANGEROUS_CONTENT:
 289       case content::DOWNLOAD_DANGER_TYPE_DANGEROUS_HOST: {
 290         return l10n_util::GetStringFUTF16(
 291             IDS_PROMPT_MALICIOUS_DOWNLOAD_CONTENT,
 292             download_->GetFileNameToReportUser().LossyDisplayName());
 293       }
 294       case content::DOWNLOAD_DANGER_TYPE_UNCOMMON_CONTENT: {
 295         return l10n_util::GetStringFUTF16(
 296             IDS_PROMPT_UNCOMMON_DOWNLOAD_CONTENT,
 297             download_->GetFileNameToReportUser().LossyDisplayName());
 298       }
 299       case content::DOWNLOAD_DANGER_TYPE_POTENTIALLY_UNWANTED: {
 300         return l10n_util::GetStringFUTF16(
 301             IDS_PROMPT_DOWNLOAD_CHANGES_SETTINGS,
 302             download_->GetFileNameToReportUser().LossyDisplayName());
 303       }
 304       case content::DOWNLOAD_DANGER_TYPE_NOT_DANGEROUS:
 305       case content::DOWNLOAD_DANGER_TYPE_MAYBE_DANGEROUS_CONTENT:
 306       case content::DOWNLOAD_DANGER_TYPE_USER_VALIDATED:
 307       case content::DOWNLOAD_DANGER_TYPE_MAX: {
 308         break;
 309       }
 310     }
 311   } else {
 312     switch (download_->GetDangerType()) {
 313       case content::DOWNLOAD_DANGER_TYPE_DANGEROUS_URL:
 314       case content::DOWNLOAD_DANGER_TYPE_DANGEROUS_CONTENT:
 315       case content::DOWNLOAD_DANGER_TYPE_DANGEROUS_HOST: {
 316         return l10n_util::GetStringUTF16(
 317             IDS_PROMPT_CONFIRM_KEEP_MALICIOUS_DOWNLOAD_BODY);
 318       }
 319       default: {
 320         return l10n_util::GetStringUTF16(
 321             IDS_PROMPT_CONFIRM_KEEP_DANGEROUS_DOWNLOAD);
 322       }
 323     }
 324   }
 325   NOTREACHED();
 326   return base::string16();
 327 }
 328
 329 void DownloadDangerPromptViews::RunDone(Action action) {
 330   // Invoking the callback can cause the download item state to change or cause
 331   // the window to close, and |callback| refers to a member variable.
 332   OnDone done = done_;
 333   done_.Reset();
 334   if (download_ != NULL) {
 335     download_->RemoveObserver(this);
 336     download_ = NULL;
 337   }
 338   if (!done.is_null())
 339     done.Run(action);
 340 }
 341
 342 }  // namespace
 343
 344 DownloadDangerPrompt* DownloadDangerPrompt::Create(
 345     content::DownloadItem* item,
 346     content::WebContents* web_contents,
 347     bool show_context,
 348     const OnDone& done) {
 349   DownloadDangerPromptViews* download_danger_prompt =
 350       new DownloadDangerPromptViews(item, web_contents, show_context, done);
 351
 352   WebContentsModalDialogManager* web_contents_modal_dialog_manager =
 353       WebContentsModalDialogManager::FromWebContents(web_contents);
 354   WebContentsModalDialogManagerDelegate* modal_delegate =
 355       web_contents_modal_dialog_manager->delegate();
 356   CHECK(modal_delegate);
 357   views::Widget* dialog = views::Widget::CreateWindowAsFramelessChild(
 358       download_danger_prompt,
 359       modal_delegate->GetWebContentsModalDialogHost()->GetHostView());
 360   web_contents_modal_dialog_manager->ShowDialog(dialog->GetNativeView());
 361
 362   return download_danger_prompt;
 363 }