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::dom {
  15 class Document;
  16
  17 class ChromeObserver final : public nsStubMutationObserver {
  18  public:
  19   NS_DECL_ISUPPORTS
  20
  21   explicit ChromeObserver(Document* aDocument);
  22   void Init();
  23
  24   NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
  25   NS_DECL_NSIMUTATIONOBSERVER_NODEWILLBEDESTROYED
  26
  27  protected:
  28   nsIWidget* GetWindowWidget();
  29   void SetDrawsTitle(bool aState);
  30   void SetChromeMargins(const nsAttrValue* aValue);
  31   nsresult HideWindowChrome(bool aShouldHide);
  32
  33  private:
  34   void ResetChromeMargins();
  35   ~ChromeObserver();
  36   // A weak pointer cleared when the element will be destroyed.
  37   Document* MOZ_NON_OWNING_REF mDocument;
  38 };
  39
  40 }  // namespace mozilla::dom
  41
  42 #endif  // mozilla_dom_ChromeObserver_h