dom/xul/ChromeObserver.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_dom_ChromeObserver_h
   8 #define mozilla_dom_ChromeObserver_h
   9
  10 #include "nsStubMutationObserver.h"
  11
  12 class nsIWidget;
  13
  14 namespace mozilla {
  15 namespace dom {
  16 class Document;
  17
  18 class ChromeObserver final : public nsStubMutationObserver {
  19  public:
  20   NS_DECL_ISUPPORTS
  21
  22   explicit ChromeObserver(Document* aDocument);
  23   void Init();
  24
  25   NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
  26   NS_DECL_NSIMUTATIONOBSERVER_NODEWILLBEDESTROYED
  27
  28  protected:
  29   nsIWidget* GetWindowWidget();
  30   void SetDrawsInTitlebar(bool aState);
  31   void SetDrawsTitle(bool aState);
  32   void SetChromeMargins(const nsAttrValue* aValue);
  33   nsresult HideWindowChrome(bool aShouldHide);
  34
  35  private:
  36   void ResetChromeMargins();
  37   ~ChromeObserver();
  38   // A weak pointer cleared when the element will be destroyed.
  39   Document* MOZ_NON_OWNING_REF mDocument;
  40 };
  41
  42 }  // namespace dom
  43 }  // namespace mozilla
  44
  45 #endif  // mozilla_dom_ChromeObserver_h