Clear the clipboard closing Incognito window

chrome/browser/clipboard/clipboard_interactive_uitest.cc

+// Copyright (c) 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/utf_string_conversions.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_commands.h"
+#include "chrome/browser/ui/tabs/tab_strip_model.h"
+#include "chrome/common/chrome_notification_types.h"
+#include "chrome/test/base/in_process_browser_test.h"
+#include "chrome/test/base/interactive_test_utils.h"
+#include "content/public/browser/render_view_host.h"
+#include "content/public/browser/web_contents.h"
+#include "ui/base/clipboard/clipboard.h"
+#include "ui/base/clipboard/scoped_clipboard_writer.h"
+
+#if defined(OS_MACOSX)
+#include "base/mac/scoped_nsautorelease_pool.h"
+#endif
+
+namespace {
+class ClipboardWriteObserver : private ui::Clipboard::ClipboardObserver {
+ public:
+  explicit ClipboardWriteObserver(ui::Clipboard* clipboard)
+      : seen_(false),
+        running_(false),
+        clipboard_(clipboard) {
+    clipboard_->AddObserver(this);
+  }
+
+  virtual ~ClipboardWriteObserver() {
+    clipboard_->RemoveObserver(this);
+  }
+
+  void Wait() {
+    if (seen_) return;
+
+    running_ = true;
+    message_loop_runner_ = new content::MessageLoopRunner;
+    message_loop_runner_->Run();
+    EXPECT_TRUE(seen_);
+  }
+
+ private:
+  virtual void OnWriteObjects(ui::Clipboard::Buffer buffer) OVERRIDE {
+    if (buffer != ui::Clipboard::BUFFER_STANDARD) return;
+    seen_ = true;
+    if (!running_) return;
+
+    message_loop_runner_->Quit();
+    running_ = false;
+  }
+
+  bool seen_;
+  bool running_;
+  scoped_refptr<content::MessageLoopRunner> message_loop_runner_;
+  ui::Clipboard* clipboard_;
+
+  DISALLOW_COPY_AND_ASSIGN(ClipboardWriteObserver);
+};
+
+} // namespace
+
+class IncognitoClipboardTest : public InProcessBrowserTest {
+ protected:
+  ui::Clipboard* clipboard() const {
+    static ui::Clipboard* clipboard = ui::Clipboard::GetForCurrentThread();
+    return clipboard;
+  }
+  void ExpectStringInClipboard(const string16& pattern) {
+    string16 content;
+    clipboard()->ReadText(ui::Clipboard::BUFFER_STANDARD, &content);
+    EXPECT_EQ(pattern, content);
+  }
+};
+
+// Tests that data copied from content area of incognito window is destroyed
+// after profile destruction.
+// Only Linux GTK supports this feature for now.
+#if defined(TOOLKIT_GTK) && defined(OS_LINUX)
+#define MAYBE_ClearContentData ClearContentData
+#else
+#define MAYBE_ClearContentData DISABLED_ClearContentData
+#endif
+IN_PROC_BROWSER_TEST_F(IncognitoClipboardTest, MAYBE_ClearContentData) {
+  EXPECT_FALSE(browser()->profile()->IsOffTheRecord());
+  Browser* browser_incognito = CreateIncognitoBrowser();
+  ui_test_utils::NavigateToURL(browser_incognito, GURL("data:text/plain,foo"));
+  // Clear the clipboard. Currently GTK Clipboard::Clear fails to clear
+  // clipboard from external content.
+  {
+    ui::ScopedClipboardWriter clipboard_writer(clipboard(),
+                                               ui::Clipboard::BUFFER_STANDARD);
+    clipboard_writer.WriteText(ASCIIToUTF16("bar"));
+  }
+  ExpectStringInClipboard(ASCIIToUTF16("bar"));
+  // Select and copy web-page content
+  content::WebContents* web_contents =
+      browser_incognito->tab_strip_model()->GetActiveWebContents();
+  content::RenderViewHost* view_host = web_contents->GetRenderViewHost();
+  ClipboardWriteObserver clipboard_observer(clipboard());
+  view_host->SelectAll();
+  view_host->Copy();
+  // Run message loop until data have been copied to the clipboard. This happens
+  // on UI thread.
+  clipboard_observer.Wait();
+  ExpectStringInClipboard(ASCIIToUTF16("foo"));
+
+  content::WindowedNotificationObserver signal(
+      chrome::NOTIFICATION_BROWSER_CLOSED,
+      content::Source<Browser>(browser_incognito));
+  chrome::CloseWindow(browser_incognito);
+
+#if defined(OS_MACOSX)
+  // BrowserWindowController depends on the auto release pool being recycled
+  // in the message loop to delete itself, which frees the Browser object
+  // which fires this event.
+  AutoreleasePool()->Recycle();
+#endif
+
+  signal.Wait();
+  EXPECT_FALSE(clipboard()->IsFormatAvailable(
+      ui::Clipboard::GetPlainTextFormatType(), ui::Clipboard::BUFFER_STANDARD));
+}