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#include <string.h>
#include <bsd/sys/queue.h>
#include <glib.h>
#include <Scintilla.h>
#include "sciteco.h"
#include "interface.h"
#include "undo.h"
UndoStack undo;
void
UndoTokenMessage::run(void)
{
interface.ssm(iMessage, wParam, lParam);
}
void
UndoStack::push(UndoToken *token)
{
if (enabled) {
token->pos = strlen(cmdline);
SLIST_INSERT_HEAD(&head, token, tokens);
} else {
delete token;
}
}
void
UndoStack::push_msg(unsigned int iMessage, uptr_t wParam, sptr_t lParam)
{
push(new UndoTokenMessage(iMessage, wParam, lParam));
}
void
UndoStack::pop(gint pos)
{
while (!SLIST_EMPTY(&head) && SLIST_FIRST(&head)->pos >= pos) {
UndoToken *top = SLIST_FIRST(&head);
top->run();
SLIST_REMOVE_HEAD(&head, tokens);
delete top;
}
}
void
UndoStack::clear(void)
{
UndoToken *cur;
while ((cur = SLIST_FIRST(&head))) {
SLIST_REMOVE_HEAD(&head, tokens);
delete cur;
}
}
UndoStack::~UndoStack()
{
UndoToken *token, *next;
SLIST_FOREACH_SAFE(token, &head, tokens, next)
delete token;
}
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