Ask for user confirmation when closing a browser with in-progress downloads

chrome/browser/views/frame/browser_view.cc

Index: chrome/browser/views/frame/browser_view.cc
===================================================================
--- chrome/browser/views/frame/browser_view.cc	(revision 13264)
+++ chrome/browser/views/frame/browser_view.cc	(working copy)
@@ -12,6 +12,7 @@
 #include "chrome/browser/bookmarks/bookmark_utils.h"
 #include "chrome/browser/browser.h"
 #include "chrome/browser/browser_list.h"
+#include "chrome/browser/download/download_manager.h"
 #include "chrome/browser/encoding_menu_controller_delegate.h"
 #include "chrome/browser/find_bar_controller.h"
 #include "chrome/browser/view_ids.h"
@@ -52,6 +53,7 @@
 #include "chrome/common/resource_bundle.h"
 #include "chrome/common/win_util.h"
 #include "chrome/views/controls/scrollbar/native_scroll_bar.h"
+#include "chrome/views/fill_layout.h"
 #include "chrome/views/view.h"
 #include "chrome/views/widget/hwnd_notification_source.h"
 #include "chrome/views/widget/root_view.h"
@@ -189,7 +191,74 @@
   DISALLOW_COPY_AND_ASSIGN(ResizeCorner);
 };
 
+////////////////////////////////////////////////////////////////////////////////
+// DownloadInProgressConfirmDialogDelegate
 
+class DownloadInProgressConfirmDialogDelegate : public views::DialogDelegate,
+                                                public views::View {
+ public:
+  explicit DownloadInProgressConfirmDialogDelegate(Browser* browser)
+      : browser_(browser) {
+    int download_count = browser->profile()->GetDownloadManager()->
+        in_progress_count();
+    label_ = new views::Label(l10n_util::GetStringF(
+        IDS_DOWNLOAD_REMOVE_CONFIRM_TITLE, download_count));
+    label_->SetMultiLine(true);
+    label_->SetHorizontalAlignment(views::Label::ALIGN_LEFT);
+    label_->set_border(views::Border::CreateEmptyBorder(10, 10, 10, 10));
+    AddChildView(label_);
+    SetParentOwned(false);
+    SetLayoutManager(new views::FillLayout());
+  }
+
+  // View implementation:
+  virtual gfx::Size GetPreferredSize() {
+    const int kContentWidth = 400;
+    return gfx::Size(kContentWidth, label_->GetHeightForWidth(kContentWidth));
+  }
+
+  // DialogDelegate implementation:
+  virtual int GetDefaultDialogButton() const {
+    return DIALOGBUTTON_CANCEL;
+  }
+
+  virtual std::wstring GetDialogButtonLabel(DialogButton button) const {
+    if (button == DIALOGBUTTON_OK)
+      return l10n_util::GetString(IDS_DOWNLOAD_REMOVE_CONFIRM_OK_BUTTON_LABEL);
+
+    DCHECK_EQ(DIALOGBUTTON_CANCEL, button);
+    return l10n_util::GetString(
+        IDS_DOWNLOAD_REMOVE_CONFIRM_CANCEL_BUTTON_LABEL);
+  }
+
+  virtual bool Accept() {
+    browser_->InProgressDownloadResponse(true);
+    return true;
+  }
+
+  virtual bool Cancel() {
+    browser_->InProgressDownloadResponse(false);
+    return true;
+  }
+
+  virtual void DeleteDelegate() {
+    delete this;
+  }
+
+  // WindowDelegate implementation:
+  virtual bool IsModal() const { return true; }
+
+  virtual views::View* GetContentsView() {
+    return this;
+  }
+
+ private:
+  Browser* browser_;
+  views::Label* label_;
+
+  DISALLOW_COPY_AND_ASSIGN(DownloadInProgressConfirmDialogDelegate);
+};
+
 ///////////////////////////////////////////////////////////////////////////////
 // BrowserView, public:
 
@@ -818,6 +887,13 @@
   NewProfileDialog::RunDialog();
 }
 
+void BrowserView::ConfirmBrowserCloseWithPendingDownloads() {
+  DownloadInProgressConfirmDialogDelegate* delegate =
+      new DownloadInProgressConfirmDialogDelegate(browser_.get());
+  views::Window::CreateChromeWindow(GetWidget()->GetNativeView(), gfx::Rect(),
+                                    delegate)->Show();
+}
+
 void BrowserView::ShowHTMLDialog(HtmlDialogUIDelegate* delegate,
                                  void* parent_window) {
   HWND parent_hwnd = reinterpret_cast<HWND>(parent_window);