430 lines
11 KiB
C
430 lines
11 KiB
C
/*
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* Copyright (C) 2012 - Juan Ferrer Toribio
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "vn-grid.h"
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G_DEFINE_TYPE (VnGrid, vn_grid, GTK_TYPE_TREE_VIEW);
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/**
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* vn_grid_new:
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*
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* Creates a new grid
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*
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* Return value: #VnGrid created.
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**/
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VnGrid * vn_grid_new ()
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{
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return g_object_new (VN_TYPE_GRID, "rules-hint", TRUE, NULL);
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}
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/**
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* vn_grid_new_with_iterator:
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* @iterator: #DbIterator where the grid will be created
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*
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* Creates a new grid into a iterator
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*
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* Return value: #VnGrid created.
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**/
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VnGrid * vn_grid_new_with_iterator (DbIterator * iterator)
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{
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VnGrid * obj = vn_grid_new ();
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g_object_set (obj, "iterator", iterator, NULL);
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return obj;
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++ Private
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static void vn_grid_on_iter_changed (DbIterator * iterator, GtkTreeView * obj);
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static void vn_grid_on_selection_changed (GtkTreeSelection * selection, GtkTreeView * obj)
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{
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GtkTreeIter iter;
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GList * l, * list;
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if (gtk_tree_selection_count_selected_rows (selection) <= 1)
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return;
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list = gtk_tree_selection_get_selected_rows (selection, NULL);
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for (l = list; l; l = l->next)
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if (gtk_tree_model_get_iter (gtk_tree_view_get_model (obj), &iter, l->data))
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{
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DbIter dbiter;
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vn_gtk_tree_iter_to_db_iter (&iter, &dbiter);
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db_iterator_select_iter (VN_GRID (obj)->iterator, &dbiter);
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}
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g_list_free_full (list, (GDestroyNotify) gtk_tree_path_free);
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}
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static void vn_grid_on_cursor_changed (GtkTreeView * tree_view, VnGrid * obj)
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{
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gint selected_rows;
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if (!db_iterator_is_ready (obj->iterator))
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return;
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selected_rows = gtk_tree_selection_count_selected_rows (gtk_tree_view_get_selection (tree_view));
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if (selected_rows == 1)
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{
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GtkTreeIter iter;
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GtkTreePath * path;
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gtk_tree_view_get_cursor (tree_view, &path, NULL);
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if (path && gtk_tree_model_get_iter (gtk_tree_view_get_model (tree_view), &iter, path))
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{
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DbIter dbiter;
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vn_gtk_tree_iter_to_db_iter (&iter, &dbiter);
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g_signal_handlers_block_by_func (obj->iterator, vn_grid_on_iter_changed, obj);
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db_iterator_move_iter (obj->iterator, &dbiter);
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g_signal_handlers_unblock_by_func (obj->iterator, vn_grid_on_iter_changed, obj);
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}
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gtk_tree_path_free (path);
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}
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else if (selected_rows == 0)
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db_iterator_move_iter (obj->iterator, NULL);
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}
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static void vn_grid_on_iter_changed (DbIterator * iterator, GtkTreeView * obj)
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{
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DbIter dbiter;
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GtkTreeSelection * selection = gtk_tree_view_get_selection (obj);
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if (db_iterator_get_iter (iterator, &dbiter) && gtk_tree_view_get_model (obj))
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{
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GtkTreeIter iter;
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GtkTreePath * path;
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vn_gtk_tree_iter_from_db_iter (&iter, &dbiter);
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path = gtk_tree_model_get_path (gtk_tree_view_get_model (obj), &iter);
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g_signal_handlers_block_by_func (obj, vn_grid_on_cursor_changed, iterator);
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gtk_tree_view_set_cursor (obj, path, NULL, FALSE);
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g_signal_handlers_unblock_by_func (obj, vn_grid_on_cursor_changed, iterator);
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gtk_tree_path_free (path);
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}
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else if (selection)
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gtk_tree_selection_unselect_all (selection);
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}
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static void vn_grid_on_model_changed (VnGrid * obj, GParamSpec * spec, gpointer data)
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{
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GList * n, * columns = gtk_tree_view_get_columns (GTK_TREE_VIEW (obj));
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for (n = columns; n; n = n->next)
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if (VN_IS_COLUMN (n->data))
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vn_column_model_changed (n->data);
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g_list_free (columns);
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}
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static void vn_grid_on_status_changed (DbIterator * iterator, gboolean ready, VnGrid * obj)
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{
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obj->model = db_model_holder_get_model (DB_MODEL_HOLDER (iterator));
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vn_grid_on_model_changed (obj, NULL, NULL);
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if (ready)
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{
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GtkTreeModel * tree_model = GTK_TREE_MODEL (vn_grid_model_new (obj->model));
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gtk_tree_view_set_model (GTK_TREE_VIEW (obj), tree_model);
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vn_grid_on_iter_changed (obj->iterator, GTK_TREE_VIEW (obj));
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g_object_unref (tree_model);
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}
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else
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gtk_tree_view_set_model (GTK_TREE_VIEW (obj), NULL);
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}
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static gboolean vn_grid_on_cursor_key_pressed (GtkTreeView * obj,
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GdkEventKey * event, gpointer data)
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{
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gboolean inverted, passed = FALSE;
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gint sel_tab_index;
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VnColumn * first = NULL;
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GList * n, * columns;
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GtkTreePath * path;
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GtkTreeViewColumn * col;
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VnColumn * selected, * next = NULL;
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GtkCellArea * area;
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GtkCellEditable * editable;
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if (!(event->type == GDK_KEY_PRESS
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&& (event->keyval == GDK_KEY_Tab
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|| event->keyval == GDK_KEY_ISO_Left_Tab
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|| event->keyval == GDK_KEY_KP_Enter)))
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return FALSE;
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gtk_tree_view_get_cursor (obj, &path, &col);
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selected = VN_COLUMN (col);
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g_object_get (col, "cell-area", &area, NULL);
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editable = gtk_cell_area_get_edit_widget (area);
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if (editable)
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gtk_cell_editable_editing_done (editable);
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g_object_unref (area);
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columns = gtk_tree_view_get_columns (obj);
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inverted = event->keyval == GDK_KEY_ISO_Left_Tab ? TRUE : FALSE;
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sel_tab_index = vn_column_get_tab_index (selected);
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first = NULL;
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for (n = columns; n; n = n->next)
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{
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gint cur_tab_index;
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VnColumn * current = n->data;
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if (current == selected)
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passed = TRUE;
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else if (VN_IS_COLUMN (current)
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&& vn_column_get_editable (current)
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&& (cur_tab_index = vn_column_get_tab_index (current)) != -1)
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{
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if (!inverted)
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{
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if (!first || cur_tab_index < vn_column_get_tab_index (first))
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first = current;
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if (cur_tab_index == sel_tab_index && passed)
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{
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next = current;
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break;
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}
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if ((!next || cur_tab_index < vn_column_get_tab_index (next))
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&& cur_tab_index > sel_tab_index)
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next = current;
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}
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else
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{
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if (!first || cur_tab_index >= vn_column_get_tab_index (first))
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first = current;
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if ((cur_tab_index == sel_tab_index && !passed)
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|| (cur_tab_index < sel_tab_index
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&& (!next || cur_tab_index >= vn_column_get_tab_index (next))))
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next = current;
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}
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}
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}
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g_list_free (columns);
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if (!next)
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{
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gboolean leave = FALSE;
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next = first ? first : selected;
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if (inverted)
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leave = !gtk_tree_path_prev (path);
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else
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{
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DbIter iter;
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if (db_model_get_iter (VN_GRID (obj)->model, &iter, gtk_tree_path_get_indices (path)[0])
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&& db_model_get_row_operations (VN_GRID (obj)->model, &iter) == DB_MODEL_ROW_OP_INSERT)
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leave = TRUE;
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else
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{
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gtk_tree_path_next (path);
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if (gtk_tree_path_get_indices (path)[0] >=
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db_model_get_nrows (VN_GRID (obj)->model))
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{
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if (db_model_get_update_flags (VN_GRID (obj)->model) &
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DB_MODEL_INSERT)
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db_iterator_insert (VN_GRID (obj)->iterator);
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else
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leave = TRUE;
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}
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}
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}
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if (leave)
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{
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gtk_tree_path_free (path);
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return FALSE;
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}
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}
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gtk_tree_view_set_cursor (obj, path, GTK_TREE_VIEW_COLUMN (next), TRUE);
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gtk_tree_path_free (path);
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return TRUE;
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}
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static gboolean vn_grid_on_escape_pressed (VnGrid * obj,
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GdkEventKey * event, gpointer data)
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{
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if (event->type == GDK_KEY_PRESS
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&& event->keyval == GDK_KEY_Escape
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&& db_iterator_get_mode (obj->iterator) != DB_ITERATOR_MODE_ON_DEMAND)
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db_iterator_reverse_operations (obj->iterator);
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return FALSE;
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++ Public
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/**
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* vn_grid_get_iterator:
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* @obj: a #VnGrid
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*
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* Gets the iterator used by @obj.
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*
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* Return value: (transfer none): the #DbIterator
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**/
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DbIterator * vn_grid_get_iterator (VnGrid * obj)
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{
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g_return_val_if_fail (VN_IS_GRID (obj), NULL);
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return obj->iterator;
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}
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/**
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* vn_grid_set_iterator:
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* @obj: a #VnGrid
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* @iterator: the #DbIterator
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*
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* Sets the iterator handled by tree view.
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**/
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void vn_grid_set_iterator (VnGrid * obj, DbIterator * iterator)
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{
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g_return_if_fail (VN_IS_GRID (obj));
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g_return_if_fail (DB_IS_ITERATOR (iterator) || !iterator);
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if (obj->iterator)
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{
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g_object_disconnect (obj->iterator
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,"any-signal", vn_grid_on_iter_changed, obj
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,"any-signal", vn_grid_on_status_changed, obj
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,NULL
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);
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g_clear_object (&obj->iterator);
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obj->model = NULL;
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}
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if (iterator)
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{
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obj->iterator = g_object_ref (iterator);
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g_object_connect (iterator
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,"signal::iter-changed", vn_grid_on_iter_changed, obj
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,"signal::status-changed", vn_grid_on_status_changed, obj
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,NULL
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);
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vn_grid_on_status_changed (iterator,
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db_iterator_is_ready (iterator), obj);
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}
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}
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/**
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* vn_grid_get_model:
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* @obj: a #VnGrid
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*
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* Gets the model used by @obj.
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*
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* Return value: (transfer none): the #DbModel
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**/
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DbModel * vn_grid_get_model (VnGrid * obj)
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{
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g_return_val_if_fail (VN_IS_GRID (obj), NULL);
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return obj->model;
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++ Properties
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typedef enum
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{
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PROP_ITERATOR = 1
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}
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VnGridProp;
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static void vn_grid_set_property (VnGrid * obj, guint id,
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const GValue * value, GParamSpec * pspec)
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{
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switch (id)
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{
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case PROP_ITERATOR:
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vn_grid_set_iterator (obj, g_value_get_object (value));
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, id, pspec);
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}
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}
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static void vn_grid_get_property (VnGrid * obj, guint id,
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GValue * value, GParamSpec * pspec)
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{
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switch (id)
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{
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case PROP_ITERATOR:
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g_value_set_object (value, obj->iterator);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (obj, id, pspec);
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}
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++ Class
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static void vn_grid_init (VnGrid * obj)
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{
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GtkTreeSelection * selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (obj));
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obj->iterator = NULL;
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obj->model = NULL;
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gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
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g_signal_connect (selection, "changed",
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G_CALLBACK (vn_grid_on_selection_changed), obj);
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g_object_connect (obj
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,"signal::notify::model", vn_grid_on_model_changed, obj
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,"signal::key-press-event", vn_grid_on_cursor_key_pressed, obj
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,"signal::key-press-event", vn_grid_on_escape_pressed, obj
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,"signal-after::cursor-changed", vn_grid_on_cursor_changed, obj
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,NULL
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);
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}
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static void vn_grid_finalize (VnGrid * obj)
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{
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vn_grid_set_iterator (obj, NULL);
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G_OBJECT_CLASS (vn_grid_parent_class)->finalize (G_OBJECT (obj));
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}
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static void vn_grid_class_init (VnGridClass * k)
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{
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GObjectClass * klass = G_OBJECT_CLASS (k);
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klass->set_property = (GObjectSetPropertyFunc) vn_grid_set_property;
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klass->get_property = (GObjectGetPropertyFunc) vn_grid_get_property;
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klass->finalize = (GObjectFinalizeFunc) vn_grid_finalize;
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g_object_class_install_property (klass, PROP_ITERATOR,
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g_param_spec_object ("iterator"
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,_("Iterator")
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,_("The iterator used by VnGrid")
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,DB_TYPE_ITERATOR
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,G_PARAM_READWRITE
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));
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} |