1999-09-27 18:44:28 +00:00
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// -*- C++ -*-
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/* This file is part of
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* ======================================================
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*
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* LyX, The Document Processor
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* Copyright (C) 1995 Matthias Ettrich
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*
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* This file is Copyleft (C) 1996
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* Lars Gullik Bj<EFBFBD>nnes
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*
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*======================================================*/
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#ifndef _BUFFER_LIST_H_
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#define _BUFFER_LIST_H_
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#ifdef __GNUG__
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#pragma interface
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#endif
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#include "buffer.h"
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#include "error.h"
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/** A class to hold all the buffers in a structure
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The point of this class is to hide from bufferlist what kind
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of structure the buffers are stored in. Should be no concern for
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bufferlist if the buffers is in a array or in a linked list.
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This class should ideally be enclosed inside class BufferList, but that
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gave me an "internal gcc error".
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*/
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class BufferStorage {
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public:
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///
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BufferStorage();
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///
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bool isEmpty();
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///
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void release(Buffer* buf);
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///
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1999-10-02 16:21:10 +00:00
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Buffer* newBuffer(string const &s, LyXRC *, bool =false);
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1999-09-27 18:44:28 +00:00
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private:
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enum {
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/** The max number of buffers there are possible to have
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loaded at the same time. (this only applies when we use an
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array)
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*/
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NUMBER_OF_BUFFERS = 50
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};
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/** The Bufferlist is currently implemented as a static array.
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The buffers are new'ed and deleted as reqested.
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*/
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Buffer *buffer[NUMBER_OF_BUFFERS];
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///
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friend class BufferStorage_Iter;
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};
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/// An Iterator class for BufferStorage
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class BufferStorage_Iter {
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public:
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///
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BufferStorage_Iter(const BufferStorage & bs)
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{ cs=&bs; index=0;}
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/// next
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Buffer* operator() ();
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///
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Buffer* operator[] (int a);
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private:
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///
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const BufferStorage *cs;
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///
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unsigned char index;
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};
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/** The class governing all the open buffers
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This class governs all the currently open buffers. Currently all the buffer
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are located in a static array, soon this will change and we will have a
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linked list instead.
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*/
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class BufferList {
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public:
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///
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BufferList();
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///
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~BufferList();
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/// state info
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enum list_state {
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///
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OK,
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///
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CLOSING
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};
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/// returns the state of the bufferlist
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list_state getState() { return _state; }
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/** loads a LyX file or...
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If the optional argument tolastfiles is false (default is
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true), the file name will not be added to the last opened
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files list
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*/
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1999-10-02 16:21:10 +00:00
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Buffer* loadLyXFile(string const & filename,
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1999-09-27 18:44:28 +00:00
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bool tolastfiles = true);
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///
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bool isEmpty();
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/// Saves buffer. Returns false if unsuccesful.
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bool write(Buffer *, bool makeBackup = true);
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///
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bool QwriteAll();
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/// Close all open buffers.
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void closeAll();
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///
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void resize();
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/// Read a file into a buffer readonly or not.
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1999-10-02 16:21:10 +00:00
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Buffer* readFile(string const &, bool ro);
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1999-09-27 18:44:28 +00:00
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/// Make a new file (buffer) using a template
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1999-10-02 16:21:10 +00:00
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Buffer* newFile(string const &, string);
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1999-09-27 18:44:28 +00:00
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/** This one must be moved to some other place.
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*/
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void makePup(int);
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///** Later with multiple frames this should not be here.
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// */
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//Buffer* switchBuffer(Buffer *from, int);
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///
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void updateInset(Inset*, bool = true);
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///
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int unlockInset(UpdatableInset*);
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///
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1999-10-02 16:21:10 +00:00
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void updateIncludedTeXfiles(string const &);
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1999-09-27 18:44:28 +00:00
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///
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void emergencyWriteAll();
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/** closes buffer
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Returns false if operation was canceled
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*/
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bool close(Buffer *);
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///
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Buffer* first();
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/// returns true if the buffer exists already
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1999-10-02 16:21:10 +00:00
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bool exists(string const &);
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1999-09-27 18:44:28 +00:00
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/// returns a pointer to the buffer with the given name.
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1999-10-02 16:21:10 +00:00
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Buffer* getBuffer(string const &);
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1999-09-27 18:44:28 +00:00
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/// returns a pointer to the buffer with the given number.
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Buffer* getBuffer(int);
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private:
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///
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BufferStorage bstore;
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///
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list_state _state;
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};
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#endif
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