/**
* undo_redo:
* @w: not used
* @data: not used
*
* executes a redo request on the current document
**/
void undo_redo(UndoMain *undostruct)
{
UndoInfo *redoinfo;
GtkTextView *textview;
GtkTextBuffer *buffer;
GtkTextIter iter, start_iter, end_iter;
GtkTextMark *mark;
cm_return_if_fail(undostruct != NULL);
if (undostruct->redo == NULL) return;
redoinfo = (UndoInfo *)undostruct->redo->data;
cm_return_if_fail (redoinfo != NULL);
undostruct->undo = g_list_prepend(undostruct->undo, redoinfo);
undostruct->redo = g_list_remove(undostruct->redo, redoinfo);
textview = undostruct->textview;
buffer = gtk_text_view_get_buffer(textview);
undo_block(undostruct);
/* Check if there is a selection active */
mark = gtk_text_buffer_get_insert(buffer);
gtk_text_buffer_get_iter_at_mark(buffer, &iter, mark);
gtk_text_buffer_place_cursor(buffer, &iter);
/* Move the view to the right position. */
gtk_adjustment_set_value(gtk_text_view_get_vadjustment(textview),
redoinfo->window_position);
switch (redoinfo->action) {
case UNDO_ACTION_INSERT:
gtk_text_buffer_get_iter_at_offset(buffer, &iter, redoinfo->start_pos);
gtk_text_buffer_insert(buffer, &iter, redoinfo->text, -1);
break;
case UNDO_ACTION_DELETE:
gtk_text_buffer_get_iter_at_offset(buffer, &start_iter, redoinfo->start_pos);
gtk_text_buffer_get_iter_at_offset(buffer, &end_iter, redoinfo->end_pos);
gtk_text_buffer_delete(buffer, &start_iter, &end_iter);
break;
case UNDO_ACTION_REPLACE_DELETE:
gtk_text_buffer_get_iter_at_offset(buffer, &start_iter, redoinfo->start_pos);
gtk_text_buffer_get_iter_at_offset(buffer, &end_iter, redoinfo->end_pos);
gtk_text_buffer_delete(buffer, &start_iter, &end_iter);
debug_print("UNDO_ACTION_REPLACE %s\n", redoinfo->text);
/* "pull" another data structure from the list */
redoinfo = (UndoInfo *)undostruct->redo->data;
cm_return_if_fail(redoinfo != NULL);
undostruct->undo = g_list_prepend(undostruct->undo, redoinfo);
undostruct->redo = g_list_remove(undostruct->redo, redoinfo);
cm_return_if_fail(redoinfo->action == UNDO_ACTION_REPLACE_INSERT);
gtk_text_buffer_insert(buffer, &start_iter, redoinfo->text, -1);
break;
case UNDO_ACTION_REPLACE_INSERT:
/* This is needed only if we redo from a middle-click button */
gtk_text_buffer_get_iter_at_offset(buffer, &iter, redoinfo->start_pos);
gtk_text_buffer_insert(buffer, &iter, redoinfo->text, -1);
break;
default:
g_assert_not_reached();
break;
}
undostruct->change_state_func(undostruct,
UNDO_STATE_TRUE, UNDO_STATE_UNCHANGED,
undostruct->change_state_data);
if (undostruct->redo == NULL)
undostruct->change_state_func(undostruct,
UNDO_STATE_UNCHANGED,
UNDO_STATE_FALSE,
undostruct->change_state_data);
undo_unblock(undostruct);
}
/**
* undo_redo:
* @w: not used
* @data: not used
*
* executes a redo request on the current document
**/
void undo_redo(UndoMain *undostruct)
{
UndoInfo *redoinfo;
GtkTextView *textview;
GtkTextBuffer *buffer;
GtkTextIter iter, start_iter, end_iter;
GtkTextMark *mark;
g_return_if_fail(undostruct != NULL);
if (undostruct->redo == NULL) return;
redoinfo = (UndoInfo *)undostruct->redo->data;
g_return_if_fail (redoinfo != NULL);
undostruct->undo = g_list_prepend(undostruct->undo, redoinfo);
undostruct->redo = g_list_remove(undostruct->redo, redoinfo);
textview = undostruct->textview;
buffer = gtk_text_view_get_buffer(textview);
undo_block(undostruct);
/* Check if there is a selection active */
mark = gtk_text_buffer_get_insert(buffer);
gtk_text_buffer_get_iter_at_mark(buffer, &iter, mark);
gtk_text_buffer_place_cursor(buffer, &iter);
/* Move the view to the right position. */
gtk_adjustment_set_value(textview->vadjustment,
redoinfo->window_position);
switch (redoinfo->action) {
case UNDO_ACTION_INSERT:
gtk_text_buffer_get_iter_at_offset
(buffer, &iter, redoinfo->start_pos);
gtk_text_buffer_insert(buffer, &iter, redoinfo->text, -1);
debug_print("redo: UNDO_ACTION_DELETE: %d: %s\n",
redoinfo->start_pos, redoinfo->text);
break;
case UNDO_ACTION_DELETE:
gtk_text_buffer_get_iter_at_offset
(buffer, &start_iter, redoinfo->start_pos);
gtk_text_buffer_get_iter_at_offset
(buffer, &end_iter, redoinfo->end_pos);
gtk_text_buffer_delete(buffer, &start_iter, &end_iter);
debug_print("redo: UNDO_ACTION_INSERT: %d: delete %d chars\n",
redoinfo->start_pos,
redoinfo->end_pos - redoinfo->start_pos);
break;
case UNDO_ACTION_REPLACE_DELETE:
gtk_text_buffer_get_iter_at_offset
(buffer, &start_iter, redoinfo->start_pos);
gtk_text_buffer_get_iter_at_offset
(buffer, &end_iter, redoinfo->end_pos);
gtk_text_buffer_delete(buffer, &start_iter, &end_iter);
debug_print("redo: UNDO_ACTION_REPLACE: %d: %s\n",
redoinfo->start_pos, redoinfo->text);
/* "pull" another data structure from the list */
redoinfo = (UndoInfo *)undostruct->redo->data;
g_return_if_fail(redoinfo != NULL);
undostruct->undo = g_list_prepend(undostruct->undo, redoinfo);
undostruct->redo = g_list_remove(undostruct->redo, redoinfo);
g_return_if_fail(redoinfo->action == UNDO_ACTION_REPLACE_INSERT);
gtk_text_buffer_insert(buffer, &start_iter, redoinfo->text, -1);
debug_print("redo: UNDO_ACTION_REPLACE: %d: %s\n",
redoinfo->start_pos, redoinfo->text);
break;
case UNDO_ACTION_REPLACE_INSERT:
g_warning("redo: this should not happen: UNDO_REPLACE_INSERT");
break;
default:
g_assert_not_reached();
break;
}
gtk_widget_queue_draw(GTK_WIDGET(textview));
undostruct->change_state_func(undostruct,
UNDO_STATE_TRUE, UNDO_STATE_UNCHANGED,
undostruct->change_state_data);
if (undostruct->redo == NULL)
undostruct->change_state_func(undostruct,
UNDO_STATE_UNCHANGED,
UNDO_STATE_FALSE,
undostruct->change_state_data);
undo_unblock(undostruct);
}
/**
* undo_undo:
* @w: not used
* @data: not used
*
* Executes an undo request on the current document
**/
void undo_undo(UndoMain *undostruct)
{
UndoInfo *undoinfo;
GtkTextView *textview;
GtkTextBuffer *buffer;
GtkTextIter iter, start_iter, end_iter;
GtkTextMark *mark;
cm_return_if_fail(undostruct != NULL);
if (undostruct->undo == NULL) return;
/* The undo data we need is always at the top op the
stack. So, therefore, the first one */
undoinfo = (UndoInfo *)undostruct->undo->data;
cm_return_if_fail(undoinfo != NULL);
undoinfo->mergeable = FALSE;
undostruct->redo = g_list_prepend(undostruct->redo, undoinfo);
undostruct->undo = g_list_remove(undostruct->undo, undoinfo);
textview = undostruct->textview;
buffer = gtk_text_view_get_buffer(textview);
undo_block(undostruct);
/* Check if there is a selection active */
mark = gtk_text_buffer_get_insert(buffer);
gtk_text_buffer_get_iter_at_mark(buffer, &iter, mark);
gtk_text_buffer_place_cursor(buffer, &iter);
/* Move the view (scrollbars) to the correct position */
gtk_adjustment_set_value
(GTK_ADJUSTMENT(gtk_text_view_get_vadjustment(textview)),
undoinfo->window_position);
switch (undoinfo->action) {
case UNDO_ACTION_DELETE:
gtk_text_buffer_get_iter_at_offset(buffer, &iter, undoinfo->start_pos);
gtk_text_buffer_insert(buffer, &iter, undoinfo->text, -1);
break;
case UNDO_ACTION_INSERT:
gtk_text_buffer_get_iter_at_offset(buffer, &start_iter, undoinfo->start_pos);
gtk_text_buffer_get_iter_at_offset(buffer, &end_iter, undoinfo->end_pos);
gtk_text_buffer_delete(buffer, &start_iter, &end_iter);
break;
case UNDO_ACTION_REPLACE_INSERT:
gtk_text_buffer_get_iter_at_offset(buffer, &start_iter, undoinfo->start_pos);
gtk_text_buffer_get_iter_at_offset(buffer, &end_iter, undoinfo->end_pos);
gtk_text_buffer_delete(buffer, &start_iter, &end_iter);
/* "pull" another data structure from the list */
if (undostruct->undo){
undoinfo = (UndoInfo *)undostruct->undo->data;
undostruct->redo = g_list_prepend(undostruct->redo, undoinfo);
undostruct->undo = g_list_remove(undostruct->undo, undoinfo);
cm_return_if_fail(undoinfo != NULL);
cm_return_if_fail(undoinfo->action == UNDO_ACTION_REPLACE_DELETE);
gtk_text_buffer_insert(buffer, &start_iter, undoinfo->text, -1);
}
break;
case UNDO_ACTION_REPLACE_DELETE:
g_warning("This should not happen. UNDO_REPLACE_DELETE");
break;
default:
g_assert_not_reached();
break;
}
undostruct->change_state_func(undostruct,
UNDO_STATE_UNCHANGED, UNDO_STATE_TRUE,
undostruct->change_state_data);
if (undostruct->undo == NULL)
undostruct->change_state_func(undostruct,
UNDO_STATE_FALSE,
UNDO_STATE_UNCHANGED,
undostruct->change_state_data);
undo_unblock(undostruct);
}
