dom/script/ScriptElement.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_ScriptElement_h
   8 #define mozilla_dom_ScriptElement_h
   9
  10 #include "mozilla/Attributes.h"
  11 #include "nsIScriptLoaderObserver.h"
  12 #include "nsIScriptElement.h"
  13 #include "nsStubMutationObserver.h"
  14
  15 namespace mozilla::dom {
  16
  17 /**
  18  * Baseclass useful for script elements (such as <xhtml:script> and
  19  * <svg:script>). Currently the class assumes that only the 'src'
  20  * attribute and the children of the class affect what script to execute.
  21  */
  22
  23 class ScriptElement : public nsIScriptElement, public nsStubMutationObserver {
  24  public:
  25   // nsIScriptLoaderObserver
  26   NS_DECL_NSISCRIPTLOADEROBSERVER
  27
  28   // nsIMutationObserver
  29   NS_DECL_NSIMUTATIONOBSERVER_CHARACTERDATACHANGED
  30   NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
  31   NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
  32   NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
  33
  34   explicit ScriptElement(FromParser aFromParser)
  35       : nsIScriptElement(aFromParser) {}
  36
  37   virtual nsresult FireErrorEvent() override;
  38
  39   virtual bool GetScriptType(nsAString& aType) override;
  40
  41  protected:
  42   // Internal methods
  43
  44   /**
  45    * Check if this element contains any script, linked or inline
  46    */
  47   virtual bool HasScriptContent() = 0;
  48
  49   virtual bool MaybeProcessScript() override;
  50 };
  51
  52 }  // namespace mozilla::dom
  53
  54 #endif  // mozilla_dom_ScriptElement_h