event.h

html-->wml的转换,能实现html到wml的大量转换工作,但是存在些许缺陷,比如对于jpeg以及gif无法转换成wbmp格式

// Copyright (c) 1994 James Clark
// See the file COPYING for copying permission.

#ifndef Event_INCLUDED
#define Event_INCLUDED 1
#ifdef __GNUG__
#pragma interface
#endif

#include "Link.h"
#include "Allocator.h"
#include "Location.h"
#include "Vector.h"
#include "Owner.h"
#include "Boolean.h"
#include "types.h"
#include "Ptr.h"
#include "StringC.h"
#include "Notation.h"
#include "Sd.h"
#include "Syntax.h"
#include "Dtd.h"
#include "ElementType.h"
#include "Text.h"
#include "Lpd.h"
#include "Message.h"
#include "Markup.h"
#include "ShortReferenceMap.h"

#ifdef SP_NAMESPACE
namespace SP_NAMESPACE {
#endif

class EventHandler;

class SP_API Event : public Link {
public:
  enum Type {
    message,
    characterData,
    startElement,
    endElement,
    pi,
    sdataEntity,
    externalDataEntity,
    subdocEntity,
    nonSgmlChar,
    appinfo,
    startDtd,
    endDtd,
    startLpd,
    endLpd,
    endProlog,
    sgmlDecl,
    uselink,
    usemap,
    commentDecl,
    sSep,
    ignoredRs,
    ignoredRe,
    reOrigin,
    ignoredChars,
    markedSectionStart,
    markedSectionEnd,
    entityStart,
    entityEnd,
    notationDecl,
    entityDecl,
    elementDecl,
    attlistDecl,		// not #NOTATION and not in LPD
    attlistNotationDecl,
    linkAttlistDecl,
    linkDecl,
    idLinkDecl,
    shortrefDecl,
    ignoredMarkup,
    entityDefaulted,
    sgmlDeclEntity
    };
  Event(Type);
  virtual void handle(EventHandler &) = 0;
  virtual void copyData();
  void *operator new(size_t sz, Allocator &alloc) { return alloc.alloc(sz); }
  void *operator new(size_t sz) { return Allocator::allocSimple(sz); }
  void operator delete(void *p) { Allocator::free(p); }
#ifdef SP_HAVE_PLACEMENT_OPERATOR_DELETE
  void operator delete(void *p, Allocator &) { Allocator::free(p); }
#endif
  Type type() const;
private:
  Event(const Event &);		// undefined
  void operator=(const Event &); // undefined
  Type type_;
};

class LocatedEvent : public Event {
public:
  LocatedEvent(Type type, const Location &);
  const Location &location() const;
private:
  LocatedEvent(const LocatedEvent &); // undefined
  void operator=(const LocatedEvent &);	// undefined
  Location location_;
};

class MarkupEvent : public LocatedEvent {
public:
  MarkupEvent(Type type);
  MarkupEvent(Type type, const Location &, Markup *);
  const Markup &markup() const;
private:
  MarkupEvent(const MarkupEvent &); // undefined
  void operator=(const MarkupEvent &);	// undefined
  Markup markup_;
};

class SP_API MessageEvent : public Event {
public:
  MessageEvent(Message &);
  MessageEvent(const Message &);
  const Message &message() const;
  void handle(EventHandler &);
private:
  MessageEvent(const MessageEvent &); // undefined
  void operator=(const MessageEvent &);	// undefined
  Message message_;
};

class AttributeList;

class StartElementEvent : public LocatedEvent {
public:
  StartElementEvent(const ElementType *,
		    const ConstPtr<Dtd> &,
		    AttributeList *,
		    const Location &,
		    Markup *);
  ~StartElementEvent();
  void handle(EventHandler &);
  Boolean mustOmitEnd() const;
  void setIncluded();
  Boolean included() const;
  const StringC &name() const;
  const ElementType *elementType() const;
  const Markup *markupPtr() const;
  const AttributeList &attributes() const;
  void copyData();
private:
  StartElementEvent(const StartElementEvent &);	// undefined
  void operator=(const StartElementEvent &);	// undefined
  const ElementType *elementType_;
  ConstPtr<Dtd> dtd_;
  PackedBoolean included_;
  PackedBoolean copied_;	// has copyData() been called
  Markup *markup_;
  AttributeList *attributes_;
};

class EndElementEvent : public LocatedEvent {
public:
  EndElementEvent(const ElementType *,
		  const ConstPtr<Dtd> &,
		  const Location &,
		  Markup *);
  ~EndElementEvent();
  void handle(EventHandler &);
  void setIncluded();
  Boolean included() const;
  const StringC &name() const;
  const ElementType *elementType() const;
  const Markup *markupPtr() const;
  void copyData();
private:
  EndElementEvent(const EndElementEvent &); // undefined
  void operator=(const EndElementEvent &);  // undefined
  const ElementType *elementType_;
  ConstPtr<Dtd> dtd_;
  PackedBoolean included_;
  PackedBoolean copied_;	// has copyData() been called
  Markup *markup_;
};

class DataEvent : public LocatedEvent {
public:
  DataEvent(Type, const Char *, size_t, const Location &);
  void handle(EventHandler &);
  const Char *data() const;
  size_t dataLength() const;
  virtual Boolean isRe(unsigned long &serial) const;
  virtual const Entity *entity() const;
protected:
  const Char *p_;
  size_t length_;
private:
  DataEvent(const DataEvent &);	// undefined
  void operator=(const DataEvent &); // undefined
};

class ImmediateDataEvent : public DataEvent {
public:
  ImmediateDataEvent(Type type, const Char *, size_t, const Location &,
		     Boolean copy);
  ~ImmediateDataEvent();
  void copyData();
private:
  ImmediateDataEvent(const ImmediateDataEvent &); // undefined
  void operator=(const ImmediateDataEvent &);	  // undefined
  Char *alloc_;
};

class InternalDataEntity;

class DataEntityEvent : public DataEvent {
public:
  DataEntityEvent(Type type, const InternalEntity *,
		  const ConstPtr<Origin> &);
  const Entity *entity() const;
private:
  DataEntityEvent(const DataEntityEvent &); // undefined
  void operator=(const DataEntityEvent &);  // undefined
};

class InternalCdataEntity;

class CdataEntityEvent : public DataEntityEvent {
public:
  CdataEntityEvent(const InternalEntity *,
		   const ConstPtr<Origin> &);
private:
  CdataEntityEvent(const CdataEntityEvent &); // undefined
  void operator=(const CdataEntityEvent &);   // undefined
};

class InternalSdataEntity;

class SdataEntityEvent : public DataEntityEvent {
public:
  SdataEntityEvent(const InternalEntity *,
		   const ConstPtr<Origin> &);
  void handle(EventHandler &);
private:
  SdataEntityEvent(const SdataEntityEvent &); // undefined
  void operator=(const SdataEntityEvent &);   // undefined
};

class PiEntity;

class PiEvent : public LocatedEvent {
public:
  PiEvent(const Char *, size_t, const Location &);
  const Char *data() const;
  size_t dataLength() const;
  virtual const Entity *entity() const;
  void handle(EventHandler &);
private:
  PiEvent(const PiEvent &);	// undefined
  void operator=(const PiEvent &); // undefined
  const Char *data_;
  size_t dataLength_;
};

class ImmediatePiEvent : public PiEvent {
public:
  ImmediatePiEvent(StringC &, const Location &);
private:
  ImmediatePiEvent(const ImmediatePiEvent &); // undefined
  void operator=(const ImmediatePiEvent &);   // undefined
  StringC string_;
};

class PiEntityEvent : public PiEvent {
public:
  PiEntityEvent(const PiEntity *entity,
		const ConstPtr<Origin> &origin);
  const Entity *entity() const;
private:
  PiEntityEvent(const PiEntityEvent &);	// undefined
  void operator=(const PiEntityEvent &); // undefined
};

class ExternalNonTextEntity;
class ExternalDataEntity;
class SubdocEntity;

class ExternalEntityEvent : public Event {
public:
  ExternalEntityEvent(Type type,
		      const ConstPtr<EntityOrigin> &);
  const ConstPtr<EntityOrigin> &entityOrigin() const;
  const Location &location() const;
private:
  ExternalEntityEvent(const ExternalEntityEvent &); // undefined
  void operator=(const ExternalEntityEvent &);	    // undefined
  ConstPtr<EntityOrigin> origin_;
};

class ExternalDataEntityEvent : public ExternalEntityEvent {
public:
  ExternalDataEntityEvent(const ExternalDataEntity *,
			  const ConstPtr<EntityOrigin> &);
  void handle(EventHandler &);
  const ExternalDataEntity *entity() const;
private:
  ExternalDataEntityEvent(const ExternalDataEntityEvent &); // undefined
  void operator=(const ExternalDataEntityEvent &);	    // undefined
  const ExternalDataEntity *dataEntity_;
};

class SubdocEntityEvent : public ExternalEntityEvent {
public:
  SubdocEntityEvent(const SubdocEntity *,
		    const ConstPtr<EntityOrigin> &);
  void handle(EventHandler &);
  const SubdocEntity *entity() const;
private:
  SubdocEntityEvent(const SubdocEntityEvent &);	// undefined
  void operator=(const SubdocEntityEvent &);	// undefined
  const SubdocEntity *subdocEntity_;
};

class NonSgmlCharEvent : public LocatedEvent {
public:
  NonSgmlCharEvent(Char c, const Location &);
  Char character() const;
  void handle(EventHandler &);
private:
  NonSgmlCharEvent(const NonSgmlCharEvent &); // undefined
  void operator=(const NonSgmlCharEvent &);   // undefined
  Char c_;
};

class AppinfoEvent : public LocatedEvent {
public:
  AppinfoEvent(const Location &);
  AppinfoEvent(const Text &, const Location &);
  void handle(EventHandler &);
  Boolean literal(const StringC *&) const;
private:
  AppinfoEvent(const AppinfoEvent &); // undefined
  void operator=(const AppinfoEvent &);	// undefined
  Boolean appinfoNone_;
  Text appinfo_;
};

class UselinkEvent : public MarkupEvent {
public:
  UselinkEvent(const ConstPtr<Lpd> &,
	       const LinkSet *,
	       Boolean restore,
	       const Location &,
	       Markup *);
  void handle(EventHandler &);
  const ConstPtr<Lpd> &lpd() const;
  const LinkSet *linkSet() const;
  Boolean restore() const;
private:
  UselinkEvent(const UselinkEvent &); // undefined
  void operator=(const UselinkEvent &);	// undefined
  ConstPtr<Lpd> lpd_;
  const LinkSet *linkSet_;
  Boolean restore_;
};

class UsemapEvent : public MarkupEvent {
public:
  UsemapEvent(const ShortReferenceMap *,
	      Vector<const ElementType *> &,
	      const ConstPtr<Dtd> &,
	      const Location &,
	      Markup *);
  void handle(EventHandler &);
  const ShortReferenceMap *map() const;
  const Vector<const ElementType *> &elements() const;
private:
  UsemapEvent(const UsemapEvent &); // undefined
  void operator=(const UsemapEvent &); // undefined
  ConstPtr<Dtd> dtd_;
  Vector<const ElementType *> elements_;
  const ShortReferenceMap *map_;
};

class StartSubsetEvent : public MarkupEvent {
public:
  StartSubsetEvent(Type,
		   const StringC &,
		   const ConstPtr<Entity> &entity,
		   Boolean hasInternalSubset,
		   const Location &,
		   Markup *);
  const StringC &name() const;
  const ConstPtr<Entity> &entity() const;
  Boolean hasInternalSubset() const;
private:
  StartSubsetEvent(const StartSubsetEvent &);	// undefined
  void operator=(const StartSubsetEvent &); // undefined
  StringC name_;
  ConstPtr<Entity> entity_;
  Boolean hasInternalSubset_;
};

class StartDtdEvent : public StartSubsetEvent {
public:
  StartDtdEvent(const StringC &,
		const ConstPtr<Entity> &entity,
		Boolean hasInternalSubset,
		const Location &,
		Markup *);
  void handle(EventHandler &);
private:
  StartDtdEvent(const StartDtdEvent &);	// undefined
  void operator=(const StartDtdEvent &); // undefined
};

class StartLpdEvent : public StartSubsetEvent {
public:
  StartLpdEvent(Boolean active,
		const StringC &,
		const ConstPtr<Entity> &entity,
		Boolean hasInternalSubset,
		const Location &,
		Markup *);
  void handle(EventHandler &);
  Boolean active() const;
private:
  StartLpdEvent(const StartLpdEvent &);	// undefined
  void operator=(const StartLpdEvent &); // undefined
  Boolean active_;
};

class EndDtdEvent : public MarkupEvent {
public:
  EndDtdEvent(const ConstPtr<Dtd> &, const Location &,
	      Markup *);
  void handle(EventHandler &);
  const Dtd &dtd() const;
  const ConstPtr<Dtd> &dtdPointer() const;
private:
  EndDtdEvent(const EndDtdEvent &); // undefined
  void operator=(const EndDtdEvent &); // undefined
  ConstPtr<Dtd> dtd_;
};

class EndLpdEvent : public MarkupEvent {
public:
  EndLpdEvent(const ConstPtr<Lpd> &, const Location &,
	      Markup *);
  void handle(EventHandler &);
  const Lpd &lpd() const;
  const ConstPtr<Lpd> &lpdPointer() const;
private:
  EndLpdEvent(const EndLpdEvent &); // undefined
  void operator=(const EndLpdEvent &); // undefined
  ConstPtr<Lpd> lpd_;
};