BOOL ME_Redo(ME_TextEditor *editor) {
ME_DisplayItem *p;
ME_UndoMode nMode = editor->nUndoMode;
assert(nMode == umAddToUndo || nMode == umIgnore);
if (editor->nUndoMode == umIgnore)
return FALSE;
/* no redo items ? */
if (!editor->pRedoStack)
return FALSE;
/* watch out for uncommitted transactions ! */
assert(editor->pRedoStack->type == diUndoEndTransaction);
editor->nUndoMode = umAddBackToUndo;
p = editor->pRedoStack->next;
ME_DestroyDisplayItem(editor->pRedoStack);
editor->pRedoStack = p;
do {
p->prev = NULL;
ME_PlayUndoItem(editor, p);
editor->pRedoStack = p->next;
ME_DestroyDisplayItem(p);
p = editor->pRedoStack;
} while(p && p->type != diUndoEndTransaction);
if (p)
p->prev = NULL;
ME_MoveCursorFromTableRowStartParagraph(editor);
ME_AddUndoItem(editor, diUndoEndTransaction, NULL);
ME_CheckTablesForCorruption(editor);
editor->nUndoMode = nMode;
ME_UpdateRepaint(editor);
return TRUE;
}
void ME_Redo(ME_TextEditor *editor) {
ME_DisplayItem *p;
ME_UndoMode nMode = editor->nUndoMode;
assert(nMode == umAddToUndo || nMode == umIgnore);
if (editor->nUndoMode == umIgnore)
return;
/* no redo items ? */
if (!editor->pRedoStack)
return;
/* watch out for uncommitted transactions ! */
assert(editor->pRedoStack->type == diUndoEndTransaction);
editor->nUndoMode = umAddBackToUndo;
p = editor->pRedoStack->next;
ME_DestroyDisplayItem(editor->pRedoStack);
do {
ME_DisplayItem *pp = p;
ME_PlayUndoItem(editor, p);
p = p->next;
ME_DestroyDisplayItem(pp);
} while(p && p->type != diUndoEndTransaction);
ME_AddUndoItem(editor, diUndoEndTransaction, NULL);
editor->pRedoStack = p;
if (p)
p->prev = NULL;
editor->nUndoMode = nMode;
ME_UpdateRepaint(editor);
}
