third_party/WebKit/Source/core/dom/ScriptableDocumentParser.h

   1 /*
   2  * Copyright (C) 2010 Google, Inc. All Rights Reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  * 1. Redistributions of source code must retain the above copyright
   8  *    notice, this list of conditions and the following disclaimer.
   9  * 2. Redistributions in binary form must reproduce the above copyright
  10  *    notice, this list of conditions and the following disclaimer in the
  11  *    documentation and/or other materials provided with the distribution.
  12  *
  13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #ifndef ScriptableDocumentParser_h
  27 #define ScriptableDocumentParser_h
  28
  29 #include "core/dom/DecodedDataDocumentParser.h"
  30 #include "core/dom/ParserContentPolicy.h"
  31 #include "wtf/text/TextPosition.h"
  32
  33 namespace blink {
  34
  35 class ScriptableDocumentParser : public DecodedDataDocumentParser {
  36 public:
  37     // Only used by Document::open for deciding if its safe to act on a
  38     // JavaScript document.open() call right now, or it should be ignored.
  39     virtual bool isExecutingScript() const { return false; }
  40
  41     // FIXME: Only the HTMLDocumentParser ever blocks script execution on
  42     // stylesheet load, which is likely a bug in the XMLDocumentParser.
  43     virtual void executeScriptsWaitingForResources() { }
  44
  45     virtual bool isWaitingForScripts() const = 0;
  46
  47     // These are used to expose the current line/column to the scripting system.
  48     virtual bool isParsingAtLineNumber() const;
  49     virtual OrdinalNumber lineNumber() const = 0;
  50     virtual TextPosition textPosition() const = 0;
  51
  52     void setWasCreatedByScript(bool wasCreatedByScript) { m_wasCreatedByScript = wasCreatedByScript; }
  53     bool wasCreatedByScript() const { return m_wasCreatedByScript; }
  54
  55     ParserContentPolicy parserContentPolicy() { return m_parserContentPolicy; }
  56
  57 protected:
  58     explicit ScriptableDocumentParser(Document&, ParserContentPolicy = AllowScriptingContent);
  59
  60 private:
  61     ScriptableDocumentParser* asScriptableDocumentParser() final { return this; }
  62
  63     // http://www.whatwg.org/specs/web-apps/current-work/#script-created-parser
  64     bool m_wasCreatedByScript;
  65     ParserContentPolicy m_parserContentPolicy;
  66 };
  67
  68 }
  69
  70 #endif // ScriptableDocumentParser_h