2 Copyright (C) 2010 Paul Davis
4 This program is free software; you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 2 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 #include "gtkmm2ext/treeutils.h"
28 Gtkmm2ext::treeview_select_one (RefPtr<TreeSelection> selection, RefPtr<TreeModel> /*model*/, TreeView& view,
29 TreeIter /*iter*/, TreePath path, TreeViewColumn* col)
31 if (!view.row_expanded (path)) {
32 // cerr << "!! selecting a row that isn't expanded! " << path.to_string() << endl;
35 selection->unselect_all ();
36 view.set_cursor (path, *col, true);
40 Gtkmm2ext::treeview_select_previous (TreeView& view, RefPtr<TreeModel> model, TreeViewColumn* col)
42 RefPtr<TreeSelection> selection = view.get_selection();
43 TreeView::Selection::ListHandle_Path rows = selection->get_selected_rows ();
45 if (selection->count_selected_rows() == 0 || !col || model->children().size() < 2) {
49 TreeView::Selection::ListHandle_Path::iterator i = rows.begin();
50 TreeModel::Path start = *i;
51 TreePath prev = start;
54 iter = model->get_iter (prev);
56 if (iter == model->children().begin()) {
58 /* at the start, go to the end */
61 while (iter != model->children().end()) {
66 /* "x" is now an iterator for the last row */
69 prev = model->get_path (iter);
77 /* can't go back, go up */
84 iter = model->get_iter (prev);
88 treeview_select_one (selection, model, view, iter, prev, col);
92 /* can't move to previous, so restart at selected and move up the tree */
98 iter = model->get_iter (prev);
101 /* can't move up the tree*/
104 /* moved up from child to parent, now move to ??? */
108 iter = model->get_iter (prev);
112 treeview_select_one (selection, model, view, iter, prev, col);
115 /* we could not forward, so wrap around to the first row */
117 /* grr: no nice way to get an iter for the
118 last row, because there is no operator--
122 TreeIter x = model->children().begin();
124 while (x != model->children().end()) {
128 prev = model->get_path (px);
129 treeview_select_one (selection, model, view, px, prev, col);
135 Gtkmm2ext::treeview_select_next (TreeView& view, RefPtr<TreeModel> model, TreeViewColumn* col)
137 RefPtr<TreeSelection> selection = view.get_selection();
138 TreeView::Selection::ListHandle_Path rows = selection->get_selected_rows ();
140 if (selection->count_selected_rows() == 0 || !col || model->children().size() < 2) {
144 /* start with the last selected row, not the first */
146 TreeView::Selection::ListHandle_Path::iterator i = rows.begin();
147 TreeView::Selection::ListHandle_Path::iterator p = i;
149 /* get the last selected row */
151 while (i != rows.end()) {
156 TreeModel::Path start = *p;
157 TreePath next = start;
160 /* if the row we intend to start from has children but it is not expanded,
161 do not try to go down.
164 iter = model->get_iter (start);
166 TreeRow row = (*iter);
167 bool down_allowed = false;
169 if (!row.children().empty()) {
170 TreePath tp = model->get_path (iter);
172 if (!view.row_expanded (tp)) {
173 down_allowed = false;
183 TreeIter iter = model->get_iter (next);
185 /* can't go down, so move to next */
193 iter = model->get_iter (next);
197 treeview_select_one (selection, model, view, iter, next, col);
201 /* can't move down/next, so restart at selected and move up the tree */
207 iter = model->get_iter (next);
210 /* can't move up the tree*/
213 /* moved up from child to parent, now move to next */
217 iter = model->get_iter (next);
221 treeview_select_one (selection, model, view, iter, next, col);
223 /* we could not forward, so wrap around to the first row */
224 next = model->get_path (model->children().begin());
225 treeview_select_one (selection, model, view, model->children().begin(), next, col);