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src
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BackStack.h
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C/C++ Source or Header
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1998-04-23
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66 lines
// -*- C++ -*-
/* This file is part of
* ======================================================
*
* LyX, The Document Processor
*
* Copyright (C) 1997-1998 The LyX Team.
*
*======================================================*/
#ifndef _BACK_STACK_H
#define _BACK_STACK_H
#include "LString.h"
// Created by Alejandro Aguilar Sierra, 970806
/** Utility to get back from a reference or from a child document.
*/
class BackStack {
public:
///
struct BackStackItem {
///
void set(LString f, int xx, int yy) {
fname = f; x = xx; y = yy;
}
/// Filename
LString fname;
/// Cursor x-position
int x;
/// Cursor y-position
int y;
};
///
BackStack(int n) : imax(n) {
item = new BackStackItem[imax];
i = 0;
}
///
~BackStack() {
delete[] item;
}
///
void push(LString f, int x, int y) {
if (i<imax)
item[i++].set(f, x, y);
}
///
LString &pop(int *x, int *y) {
if (i>0) i--;
*x = item[i].x;
*y = item[i].y;
return item[i].fname;
}
private:
///
BackStackItem *item;
///
int i;
///
int imax;
};
#endif