| /* |
| * Copyright (C) 2015-2018 Savoir-faire Linux Inc. |
| * Author: Stepan Salenikovich <stepan.salenikovich@savoirfairelinux.com> |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation; either version 3 of the License, or |
| * (at your option) any later version. |
| * |
| * This program is distributed in the hope that it will be useful, |
| * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| * GNU General Public License for more details. |
| * |
| * You should have received a copy of the GNU General Public License |
| * along with this program; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| */ |
| |
| #include "models.h" |
| |
| #include "../models/gtkqtreemodel.h" |
| #include <QtCore/QItemSelectionModel> |
| |
| QModelIndex |
| get_index_from_selection(GtkTreeSelection *selection) |
| { |
| GtkTreeIter iter; |
| GtkTreeModel *model = NULL; |
| |
| if (gtk_tree_selection_get_selected(selection, &model, &iter)) { |
| if (GTK_IS_Q_TREE_MODEL(model)) |
| return gtk_q_tree_model_get_source_idx(GTK_Q_TREE_MODEL(model), &iter); |
| } |
| return QModelIndex(); |
| } |
| |
| QModelIndex |
| gtk_combo_box_get_index(GtkComboBox *box) |
| { |
| GtkTreeIter iter; |
| GtkTreeModel *model = gtk_combo_box_get_model(box); |
| |
| if (gtk_combo_box_get_active_iter(box, &iter)) { |
| if (GTK_IS_Q_TREE_MODEL(model)) |
| return gtk_q_tree_model_get_source_idx(GTK_Q_TREE_MODEL(model), &iter); |
| } |
| return QModelIndex(); |
| } |
| |
| static void |
| update_selection(GtkComboBox *box, QItemSelectionModel *selection_model) |
| { |
| QModelIndex idx = gtk_combo_box_get_index(box); |
| if (idx.isValid()) { |
| selection_model->setCurrentIndex(idx, QItemSelectionModel::ClearAndSelect); |
| } |
| selection_model->clearSelection(); |
| } |
| |
| void |
| gtk_combo_box_set_active_index(GtkComboBox *box, const QModelIndex& idx) |
| { |
| if (idx.isValid()) { |
| GtkTreeIter new_iter; |
| GtkTreeModel *model = gtk_combo_box_get_model(box); |
| |
| g_return_if_fail(GTK_IS_Q_TREE_MODEL(model)); |
| |
| if (gtk_q_tree_model_source_index_to_iter(GTK_Q_TREE_MODEL(model), idx, &new_iter)) { |
| gtk_combo_box_set_active_iter(box, &new_iter); |
| } else { |
| g_warning("Given QModelIndex doesn't exist in GtkTreeModel"); |
| } |
| } |
| } |
| |
| QMetaObject::Connection |
| gtk_combo_box_set_qmodel(GtkComboBox *box, QAbstractItemModel *qmodel, QItemSelectionModel *selection_model) |
| { |
| QMetaObject::Connection connection; |
| GtkTreeModel *model; |
| |
| model = (GtkTreeModel *)gtk_q_tree_model_new( |
| qmodel, |
| 1, |
| 0, Qt::DisplayRole, G_TYPE_STRING); |
| |
| gtk_combo_box_set_model(box, GTK_TREE_MODEL(model)); |
| |
| if (!selection_model) return connection; |
| |
| /* sync the initial selection */ |
| gtk_combo_box_set_active_index(box, selection_model->currentIndex()); |
| |
| /* connect signals to and from the selection model */ |
| connection = QObject::connect( |
| selection_model, |
| &QItemSelectionModel::currentChanged, |
| [=](const QModelIndex current, G_GNUC_UNUSED const QModelIndex & previous) { |
| gtk_combo_box_set_active_index(box, current); |
| } |
| ); |
| g_signal_connect(box, |
| "changed", |
| G_CALLBACK(update_selection), |
| selection_model); |
| |
| return connection; |
| } |
| |
| QMetaObject::Connection |
| gtk_combo_box_set_qmodel_text(GtkComboBox *box, QAbstractItemModel *qmodel, QItemSelectionModel *selection_model) |
| { |
| auto connection = gtk_combo_box_set_qmodel(box, qmodel, selection_model); |
| |
| GtkCellRenderer *renderer = gtk_cell_renderer_text_new(); |
| gtk_cell_layout_pack_start(GTK_CELL_LAYOUT(box), renderer, FALSE); |
| gtk_cell_layout_set_attributes(GTK_CELL_LAYOUT(box), renderer, |
| "text", 0, NULL); |
| |
| return connection; |
| } |