Chrome Frame turndown prompt.

chrome_frame/turndown_prompt/turndown_prompt_window.h

+// Copyright 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.
+
+#ifndef CHROME_FRAME_TURNDOWN_PROMPT_TURNDOWN_PROMPT_WINDOW_H_
+#define CHROME_FRAME_TURNDOWN_PROMPT_TURNDOWN_PROMPT_WINDOW_H_
+
+#include <windows.h>
+#include <atlbase.h>
+#include <atlapp.h>
+#include <atlcrack.h>
+#include <atlframe.h>
+#include <atltheme.h>
+#include <atlwin.h>
+
+#include "base/debug/debugger.h"
+#include "base/callback.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
+#include "base/win/scoped_comptr.h"
+#include "base/win/scoped_handle.h"
+#include "chrome_frame/infobars/infobar_content.h"
+#include "chrome_frame/resource.h"
+#include "grit/chrome_frame_dialogs.h"
+
+class UrlLauncher;
+
+namespace WTL {
+class CHyperLink;
+}  // namespace WTL
+
+// Implements a dialog with text and buttons notifying the user that Chrome
+// Frame is being turned down, offering them a link to learn more about moving
+// to a modern browser.
+class TurndownPromptWindow
+    : public CDialogImpl<TurndownPromptWindow, CWindow>,
+      public CDialogResize<TurndownPromptWindow>,
+      public CThemeImpl<TurndownPromptWindow> {
+ public:
+  enum { IDD = IDD_CHROME_FRAME_TURNDOWN_PROMPT };
+
+  // Creates and initializes a dialog for display in the provided frame.  The
+  // UrlLauncher may be used to launch a new tab containing a knowledge-base
+  // article about the turndown.
+  //
+  // Upon success, takes ownership of itself (to be deleted upon WM_DESTROY) and
+  // returns a weak pointer to this dialog. Upon failure, returns a null weak
+  // pointer and deletes self.
+  //
+  // In either case, takes ownership of the UrlLauncher but not the frame.
+  // |uninstall_closure| is invoked if/when the Uninstall button is activated.
+  static base::WeakPtr<TurndownPromptWindow> CreateInstance(
+      InfobarContent::Frame* frame,
+      UrlLauncher* url_launcher,
+      const base::Closure& uninstall_closure);
+
+  BEGIN_MSG_MAP(InfobarWindow)
+    CHAIN_MSG_MAP(CThemeImpl<TurndownPromptWindow>)
+    MSG_WM_CTLCOLORDLG(OnCtlColorDlg)
+    MSG_WM_DESTROY(OnDestroy)
+    MSG_WM_INITDIALOG(OnInitDialog)
+    MSG_WM_THEMECHANGED(OnThemeChanged)
+    NOTIFY_HANDLER(IDC_TD_PROMPT_LINK, NM_CLICK, OnLearnMore)
+    COMMAND_HANDLER(IDUNINSTALL, BN_CLICKED, OnUninstall)
+    COMMAND_HANDLER(IDDISMISS, BN_CLICKED, OnDismiss)
+    CHAIN_MSG_MAP(CDialogResize<TurndownPromptWindow>)
+  END_MSG_MAP()
+
+  BEGIN_DLGRESIZE_MAP(InfobarWindow)
+    DLGRESIZE_CONTROL(IDDISMISS, DLSZ_CENTER_Y | DLSZ_MOVE_X)
+    DLGRESIZE_CONTROL(IDUNINSTALL, DLSZ_CENTER_Y | DLSZ_MOVE_X)
+    DLGRESIZE_CONTROL(IDC_TD_PROMPT_MESSAGE, DLSZ_SIZE_Y | DLSZ_SIZE_X)
+    DLGRESIZE_CONTROL(IDC_TD_PROMPT_LINK, DLSZ_CENTER_Y | DLSZ_MOVE_X)
+  END_DLGRESIZE_MAP()
+
+  virtual void OnFinalMessage(HWND);
+
+ private:
+  template<class GDIHANDLE>
+  struct GdiObjectTraits {
+    typedef GDIHANDLE Handle;
+    static bool CloseHandle(GDIHANDLE handle) {
+      return ::DeleteObject(handle) != FALSE;
+    }
+    static bool IsHandleValid(GDIHANDLE handle) {
+      return handle != NULL;
+    }
+    static GDIHANDLE NullHandle() {
+      return NULL;
+    }
+  };
+  typedef base::win::GenericScopedHandle<GdiObjectTraits<HBRUSH>,
+                                         base::win::DummyVerifierTraits>
+      ScopedBrushHandle;
+
+  // Call CreateInstance() to get an initialized TurndownPromptWindow.
+  TurndownPromptWindow(InfobarContent::Frame* frame,
+                       UrlLauncher* url_launcher,
+                       const base::Closure& uninstall_closure);
+
+  // The TurndownPromptWindow manages its own destruction.
+  virtual ~TurndownPromptWindow();
+
+  // Event handlers.
+  HBRUSH OnCtlColorDlg(HDC device_context, HWND window);
+  void OnDestroy();
+  BOOL OnInitDialog(CWindow wndFocus, LPARAM lInitParam);
+  void OnThemeChanged();
+  LRESULT OnLearnMore(WORD wParam, LPNMHDR lParam, BOOL& bHandled);  // NOLINT
+  LRESULT OnUninstall(WORD wNotifyCode,
+                      WORD wID,
+                      HWND hWndCtl,
+                      BOOL& bHandled);
+  LRESULT OnDismiss(WORD wNotifyCode,
+                    WORD wID,
+                    HWND hWndCtl,
+                    BOOL& bHandled);
+
+  InfobarContent::Frame* frame_;  // Not owned by this instance
+  scoped_ptr<WTL::CHyperLink> link_;
+  scoped_ptr<UrlLauncher> url_launcher_;
+  base::Closure uninstall_closure_;
+  ScopedBrushHandle brush_;
+
+  base::WeakPtrFactory<TurndownPromptWindow> weak_ptr_factory_;
+  DISALLOW_COPY_AND_ASSIGN(TurndownPromptWindow);
+};  // class TurndownPromptWindow
+
+#endif  // CHROME_FRAME_TURNDOWN_PROMPT_TURNDOWN_PROMPT_WINDOW_H_