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      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 WebCore {
     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 OrdinalNumber lineNumber() const = 0;
     49     virtual TextPosition textPosition() const = 0;
     50 
     51     void setWasCreatedByScript(bool wasCreatedByScript) { m_wasCreatedByScript = wasCreatedByScript; }
     52     bool wasCreatedByScript() const { return m_wasCreatedByScript; }
     53 
     54     ParserContentPolicy parserContentPolicy() { return m_parserContentPolicy; }
     55 
     56 protected:
     57     explicit ScriptableDocumentParser(Document*, ParserContentPolicy = AllowScriptingContent);
     58 
     59 private:
     60     virtual ScriptableDocumentParser* asScriptableDocumentParser() { return this; }
     61 
     62     // http://www.whatwg.org/specs/web-apps/current-work/#script-created-parser
     63     bool m_wasCreatedByScript;
     64     ParserContentPolicy m_parserContentPolicy;
     65 };
     66 
     67 }
     68 
     69 #endif // ScriptableDocumentParser_h
     70