kjs_traversal.h

00001 // -*- c-basic-offset: 2 -*-
00002 /*
00003  *  This file is part of the KDE libraries
00004  *  Copyright (C) 2001 Peter Kelly (pmk@post.com)
00005  *
00006  *  This library is free software; you can redistribute it and/or
00007  *  modify it under the terms of the GNU Library General Public
00008  *  License as published by the Free Software Foundation; either
00009  *  version 2 of the License, or (at your option) any later version.
00010  *
00011  *  This library is distributed in the hope that it will be useful,
00012  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  *  Library General Public License for more details.
00015  *
00016  *  You should have received a copy of the GNU Library General Public
00017  *  License along with this library; if not, write to the Free Software
00018  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
00019  */
00020 
00021 #ifndef _KJS_TRAVERSAL_H_
00022 #define _KJS_TRAVERSAL_H_
00023 
00024 #include "ecma/kjs_dom.h"
00025 #include "dom/dom2_traversal.h"
00026 
00027 namespace KJS {
00028 
00029   class DOMNodeIterator : public DOMObject {
00030   public:
00031     DOMNodeIterator(ExecState *exec, DOM::NodeIterator ni);
00032     ~DOMNodeIterator();
00033     virtual Value tryGet(ExecState *exec,const Identifier &p) const;
00034     Value getValueProperty(ExecState *exec, int token) const;
00035     // no put - all read-only
00036     virtual const ClassInfo* classInfo() const { return &info; }
00037     static const ClassInfo info;
00038     enum { Filter, Root, WhatToShow, ExpandEntityReferences,
00039            NextNode, PreviousNode, Detach };
00040     DOM::NodeIterator toNodeIterator() const { return nodeIterator; }
00041   protected:
00042     DOM::NodeIterator nodeIterator;
00043   };
00044 
00045   // Constructor object NodeFilter
00046   class NodeFilterConstructor : public DOMObject {
00047   public:
00048     NodeFilterConstructor(ExecState *);
00049     virtual Value tryGet(ExecState *exec,const Identifier &p) const;
00050     Value getValueProperty(ExecState *exec, int token) const;
00051     // no put - all read-only
00052     virtual const ClassInfo* classInfo() const { return &info; }
00053     static const ClassInfo info;
00054   };
00055 
00056   class DOMNodeFilter : public DOMObject {
00057   public:
00058     DOMNodeFilter(ExecState *exec, DOM::NodeFilter nf);
00059     ~DOMNodeFilter();
00060     // no put - all read-only
00061     virtual const ClassInfo* classInfo() const { return &info; }
00062     static const ClassInfo info;
00063     virtual DOM::NodeFilter toNodeFilter() const { return nodeFilter; }
00064     enum { AcceptNode };
00065   protected:
00066     DOM::NodeFilter nodeFilter;
00067   };
00068 
00069   class DOMTreeWalker : public DOMObject {
00070   public:
00071     DOMTreeWalker(ExecState *exec, DOM::TreeWalker tw);
00072     ~DOMTreeWalker();
00073     virtual Value tryGet(ExecState *exec,const Identifier &p) const;
00074     Value getValueProperty(ExecState *exec, int token) const;
00075     virtual void tryPut(ExecState *exec, const Identifier &propertyName,
00076                         const Value& value, int attr = None);
00077     virtual const ClassInfo* classInfo() const { return &info; }
00078     static const ClassInfo info;
00079     enum { Root, WhatToShow, Filter, ExpandEntityReferences, CurrentNode,
00080            ParentNode, FirstChild, LastChild, PreviousSibling, NextSibling,
00081            PreviousNode, NextNode };
00082     DOM::TreeWalker toTreeWalker() const { return treeWalker; }
00083   protected:
00084     DOM::TreeWalker treeWalker;
00085   };
00086 
00087   Value getDOMNodeIterator(ExecState *exec, DOM::NodeIterator ni);
00088   Value getNodeFilterConstructor(ExecState *exec);
00089   Value getDOMNodeFilter(ExecState *exec, DOM::NodeFilter nf);
00090   Value getDOMTreeWalker(ExecState *exec, DOM::TreeWalker tw);
00091 
00095   DOM::NodeFilter toNodeFilter(const Value&);
00096 
00097   class JSNodeFilter : public DOM::CustomNodeFilter {
00098   public:
00099     JSNodeFilter(Object & _filter);
00100     virtual ~JSNodeFilter();
00101     virtual short acceptNode (const DOM::Node &n);
00102   protected:
00103     Object filter;
00104   };
00105 
00106 } // namespace
00107 
00108 #endif
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