641 lines
16 KiB
C
641 lines
16 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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static void vn_grid_model_holder_init (DbModelHolderInterface * iface);
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static void vn_grid_iterator_init (DbIteratorInterface * iface);
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static void vn_grid_on_iter_changed (GtkTreeView * self);
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static void vn_grid_set_iter (VnGrid * self, DbIter * iter);
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static gboolean vn_grid_move_iter (VnGrid * self, DbIter * iter);
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/**
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* SECTION: vn-grid
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* @Short_description: a grid to display data
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* @Title: VnGrid
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*
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* #VnGrid is used to show data from a #DbModel organized in #VnColumns.
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*/
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G_DEFINE_TYPE_WITH_CODE (VnGrid, vn_grid, GTK_TYPE_TREE_VIEW,
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G_IMPLEMENT_INTERFACE (DB_TYPE_MODEL_HOLDER,
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vn_grid_model_holder_init)
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G_IMPLEMENT_INTERFACE (DB_TYPE_ITERATOR,
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vn_grid_iterator_init)
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);
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/**
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* VnGrid:
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* @params: (element-type Db.Param):
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**/
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/**
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* vn_grid_new:
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* @model: a #DbModel
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*
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* Creates a new grid
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*
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* Return value: (transfer full): #VnGrid created.
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**/
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VnGrid * vn_grid_new (DbModel * model)
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{
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return g_object_new (VN_TYPE_GRID, "rules-hint", TRUE, "data-model", model, NULL);
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++ Private
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static void vn_grid_unref_param (VnGrid * self, DbParam * param)
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{
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self->params = g_list_remove (self->params, param);
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}
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static gboolean vn_grid_on_key_pressed (GtkTreeView * self,
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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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// Remove new not inserted row when Escape is pressed
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if (event->type == GDK_KEY_PRESS
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&& event->keyval == GDK_KEY_Escape
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&& VN_GRID (self)->mode != DB_ITERATOR_MODE_ON_DEMAND)
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{
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db_iterator_reverse_operations (DB_ITERATOR (self));
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return FALSE;
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}
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// Move cursor when pressing Tab, Shift + Tab or Keypad Enter
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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 (self, &path, &col);
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if (!col || !path)
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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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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 (self);
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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 && path)
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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 (self)->model, &iter, gtk_tree_path_get_indices (path)[0])
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&& db_model_get_row_operations (VN_GRID (self)->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 (self)->model))
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{
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if (db_model_get_update_flags (VN_GRID (self)->model) &
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DB_MODEL_INSERT)
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db_iterator_insert (DB_ITERATOR (self));
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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 (self, 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 void vn_grid_on_cursor_changed (GtkTreeView * self)
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{
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GtkTreeIter iter;
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GtkTreePath * path;
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if (gtk_tree_selection_count_selected_rows (gtk_tree_view_get_selection (self)) > 1)
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return;
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gtk_tree_view_get_cursor (self, &path, NULL);
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if (path && gtk_tree_model_get_iter (gtk_tree_view_get_model (self), &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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vn_grid_move_iter (VN_GRID (self), &dbiter);
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}
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gtk_tree_path_free (path);
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}
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static void vn_grid_on_iter_changed (GtkTreeView * self)
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{
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GtkTreeSelection * selection = gtk_tree_view_get_selection (self);
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if (VN_GRID (self)->iter && gtk_tree_view_get_model (self))
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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, VN_GRID (self)->iter);
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path = gtk_tree_model_get_path (gtk_tree_view_get_model (self), &iter);
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g_signal_handlers_block_by_func (self, vn_grid_on_cursor_changed, NULL);
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gtk_tree_view_set_cursor (self, path, NULL, FALSE);
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g_signal_handlers_unblock_by_func (self, vn_grid_on_cursor_changed, NULL);
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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 * self, GParamSpec * spec, gpointer data)
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{
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GList * n, * columns = gtk_tree_view_get_columns (GTK_TREE_VIEW (self));
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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_row_num_changed (VnGrid * self)
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{
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if (self->iter)
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self->row = db_model_get_path (self->model, self->iter);
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else if (!self->remember_selection)
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self->row = -1;
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db_iterator_row_num_changed (DB_ITERATOR (self));
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}
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static void vn_grid_iter_changed (VnGrid * self)
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{
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vn_grid_row_num_changed (self);
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db_iterator_iter_changed (DB_ITERATOR (self));
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vn_grid_on_iter_changed (GTK_TREE_VIEW (self));
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++ DbModelHolder methods
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static void vn_grid_set_model_mode (VnGrid * self)
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{
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if (!self->model)
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return;
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if (self->mode == DB_ITERATOR_MODE_ON_CHANGE)
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db_model_set_mode (self->model, DB_MODEL_MODE_ON_CHANGE);
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else
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db_model_set_mode (self->model, DB_MODEL_MODE_ON_DEMAND);
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}
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static void vn_grid_on_model_line_inserted (DbModel * model, DbIter * iter, VnGrid * self)
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{
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db_iterator_data_changed (DB_ITERATOR (self));
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}
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static void vn_grid_on_model_line_updated_after (DbModel * model, DbIter * iter, VnGrid * self)
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{
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if (self->iter && db_iter_compare (iter, self->iter))
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vn_grid_iter_changed (self);
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db_iterator_data_changed (DB_ITERATOR (self));
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}
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static void vn_grid_on_model_line_deleted (DbModel * model, gint row, VnGrid * self)
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{
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if (self->iter && row == self->row)
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{
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DbIter iter;
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if (db_model_get_iter (model, &iter, row + 1)
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|| db_model_get_iter (model, &iter, row - 1))
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vn_grid_set_iter (self, &iter);
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else
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vn_grid_set_iter (self, NULL);
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}
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}
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static void vn_grid_on_model_line_deleted_after (DbModel * model, gint row, VnGrid * self)
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{
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if (self->iter)
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vn_grid_row_num_changed (self);
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db_iterator_data_changed (DB_ITERATOR (self));
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}
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static void vn_grid_on_model_lines_reordered (DbModel * model, gint column, gint * new_order, VnGrid * self)
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{
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if (self->iter)
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vn_grid_row_num_changed (self);
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}
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static void vn_grid_on_model_status_changed (DbModel * model, DbModelStatus status, VnGrid * self)
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{
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self->model = db_model_holder_get_model (DB_MODEL_HOLDER (self));
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vn_grid_on_model_changed (self, NULL, NULL);
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if (status == DB_MODEL_STATUS_READY)
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{
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DbIter iter;
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GtkTreeModel * tree_model;
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db_iterator_status_changed (DB_ITERATOR (self), TRUE);
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tree_model = GTK_TREE_MODEL (vn_list_model_new (self->model));
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gtk_tree_view_set_model (GTK_TREE_VIEW (self), tree_model);
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vn_grid_on_iter_changed (GTK_TREE_VIEW (self));
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if (self->row >= 0 && self->row < db_model_get_nrows (self->model)
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&& db_model_get_iter (self->model, &iter, self->row))
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vn_grid_set_iter (self, &iter);
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else
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vn_grid_set_iter (self, NULL);
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g_object_unref (tree_model);
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}
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else
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{
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vn_grid_set_iter (self, NULL);
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db_iterator_status_changed (DB_ITERATOR (self), FALSE);
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gtk_tree_view_set_model (GTK_TREE_VIEW (self), NULL);
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}
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}
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static void vn_grid_on_model_operations_done (DbModel * model, VnGrid * self)
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{
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g_return_val_if_fail (VN_IS_GRID (self), NULL);
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db_iterator_operations_done (DB_ITERATOR (self));
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}
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static DbModel * vn_grid_get_model (VnGrid * self)
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{
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g_return_val_if_fail (VN_IS_GRID (self), NULL);
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return self->model;
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}
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static void vn_grid_set_model (VnGrid * self, DbModel * model)
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{
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g_return_if_fail (VN_IS_GRID (self));
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if (!model)
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return;
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if (!self->model)
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{
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self->model = g_object_ref (model);
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g_object_connect (model
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,"signal::line-inserted", vn_grid_on_model_line_inserted, self
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,"signal-after::line-updated", vn_grid_on_model_line_updated_after, self
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,"signal::line-deleted", vn_grid_on_model_line_deleted, self
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,"signal-after::line-deleted", vn_grid_on_model_line_deleted_after, self
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,"signal::lines-reordered", vn_grid_on_model_lines_reordered, self
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,"signal::status-changed", vn_grid_on_model_status_changed, self
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,"signal::operations-done", vn_grid_on_model_operations_done, self
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,NULL
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);
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vn_grid_set_model_mode (self);
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vn_grid_on_model_status_changed (model,
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db_model_get_status (model), self);
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}
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else
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g_warning ("VnGrid: Can't reassign the 'data-model' property");
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++ DbIterator methods
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static DbIteratorMode vn_grid_get_mode (VnGrid * self)
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{
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g_return_val_if_fail (VN_IS_GRID (self), 0);
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return self->mode;
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}
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static void vn_grid_set_mode (VnGrid * self, DbIteratorMode mode)
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{
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g_return_if_fail (VN_IS_GRID (self));
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self->mode = mode;
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vn_grid_set_model_mode (self);
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}
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static gint vn_grid_get_row (VnGrid * self)
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{
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g_return_val_if_fail (VN_IS_GRID (self), -1);
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if (self->iter)
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return self->row;
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else
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return -1;
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}
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static gboolean vn_grid_get_iter (VnGrid * self, DbIter ** iter)
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{
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g_return_val_if_fail (VN_IS_GRID (self), NULL);
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if (!self->iter)
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return FALSE;
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*iter = self->iter;
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return TRUE;
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}
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static void vn_grid_set_iter (VnGrid * self, DbIter * iter)
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{
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if (iter)
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{
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db_iter_free (self->iter);
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self->iter = db_iter_copy (iter);
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vn_grid_iter_changed (self);
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}
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else if (self->iter)
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{
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if (!self->remember_selection)
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self->row = 0;
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db_iter_free (self->iter);
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self->iter = NULL;
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vn_grid_iter_changed (self);
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}
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}
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static gboolean vn_grid_move_iter (VnGrid * self, DbIter * iter)
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{
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g_return_val_if_fail (VN_IS_GRID (self), FALSE);
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if (self->iter && db_iter_compare (self->iter, iter))
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return FALSE;
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if (self->iter && self->mode != DB_ITERATOR_MODE_ON_DEMAND)
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{
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if (db_model_get_row_operations (self->model, self->iter) == DB_MODEL_ROW_OP_INSERT)
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db_model_reverse_operations (self->model);
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db_model_perform_operations (self->model, FALSE);
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}
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vn_grid_set_iter (self, iter);
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return TRUE;
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}
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static GList * vn_grid_get_param_list (VnGrid * self)
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{
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g_return_val_if_fail (VN_IS_GRID (self), NULL);
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return self->params;
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}
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static void vn_grid_delete_selection (VnGrid * self)
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{
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GtkTreeModel * tree_model;
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GtkTreeSelection * selection;
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GList * selected, * l;
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g_return_val_if_fail (VN_IS_GRID (self), NULL);
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if (!self->model)
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return;
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selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (self));
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selected = gtk_tree_selection_get_selected_rows (selection, NULL);
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tree_model = gtk_tree_view_get_model (GTK_TREE_VIEW (self));
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for (l = selected; l; l = l->next)
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{
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DbIter iter;
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GtkTreeIter tree_iter;
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gtk_tree_model_get_iter (tree_model, &tree_iter, l->data);
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vn_gtk_tree_iter_to_db_iter (&tree_iter, &iter);
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db_model_delete (self->model, &iter);
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}
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g_list_free_full (selected, (GDestroyNotify) gtk_tree_path_free);
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++ Properties
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typedef enum
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{
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PROP_MODEL = 1
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,PROP_MODE
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,PROP_REMEMBER_SELECTION
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}
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VnGridProp;
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static void vn_grid_set_property (VnGrid * self, 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_MODEL:
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vn_grid_set_model (self, g_value_get_object (value));
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break;
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case PROP_MODE:
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vn_grid_set_mode (self, g_value_get_enum (value));
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break;
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case PROP_REMEMBER_SELECTION:
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self->remember_selection = g_value_get_boolean (value);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (self, id, pspec);
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}
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}
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static void vn_grid_get_property (VnGrid * self, 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_MODEL:
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g_value_set_object (value, self->model);
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break;
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case PROP_MODE:
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g_value_set_enum (value, self->mode);
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break;
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case PROP_REMEMBER_SELECTION:
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g_value_set_boolean (value, self->remember_selection);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (self, 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 * self)
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{
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GtkTreeSelection * selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (self));
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self->mode = 0;
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self->iter = 0;
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self->row = 0;
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self->params = NULL;
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self->model = NULL;
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gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
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g_signal_connect (self, "notify::model", G_CALLBACK (vn_grid_on_model_changed), NULL);
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g_object_connect (self
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,"signal-after::cursor-changed", vn_grid_on_cursor_changed, NULL
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,"signal::key-press-event", vn_grid_on_key_pressed, NULL
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,NULL
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);
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}
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static void vn_grid_finalize (VnGrid * self)
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{
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GList * n;
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for (n = self->params; n; n = n->next)
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g_object_weak_unref (n->data,
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(GWeakNotify) vn_grid_unref_param, self);
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g_list_free (self->params);
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db_iter_free (self->iter);
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self->iter = NULL;
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if (self->model)
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{
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g_object_disconnect (self->model
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,"any_signal", vn_grid_on_model_line_inserted, self
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,"any_signal", vn_grid_on_model_line_updated_after, self
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,"any_signal", vn_grid_on_model_line_deleted, self
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,"any_signal", vn_grid_on_model_line_deleted_after, self
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,"any_signal", vn_grid_on_model_lines_reordered, self
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,"any_signal", vn_grid_on_model_status_changed, self
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,"any_signal", vn_grid_on_model_operations_done, self
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,NULL
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);
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g_object_unref (self->model);
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}
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G_OBJECT_CLASS (vn_grid_parent_class)->finalize (G_OBJECT (self));
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}
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static void vn_grid_class_init (VnGridClass * klass)
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{
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GObjectClass * k = G_OBJECT_CLASS (klass);
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k->set_property = (GObjectSetPropertyFunc) vn_grid_set_property;
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k->get_property = (GObjectGetPropertyFunc) vn_grid_get_property;
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k->finalize = (GObjectFinalizeFunc) vn_grid_finalize;
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g_object_class_override_property (k, PROP_MODEL, "data-model");
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g_object_class_override_property (k, PROP_MODE, "mode");
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g_object_class_override_property (k, PROP_REMEMBER_SELECTION, "remember-selection");
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}
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static void vn_grid_model_holder_init (DbModelHolderInterface * iface)
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{
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iface->get_model = (DbModelHolderGetModelFunc) vn_grid_get_model;
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iface->set_model = (DbModelHolderSetModelFunc) vn_grid_set_model;
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}
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static void vn_grid_iterator_init (DbIteratorInterface * iface)
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{
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iface->get_mode = (DbIteratorGetMode) vn_grid_get_mode;
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iface->set_mode = (DbIteratorSetMode) vn_grid_set_mode;
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iface->get_row = (DbIteratorGetRow) vn_grid_get_row;
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iface->get_iter = (DbIteratorGetIter) vn_grid_get_iter;
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iface->set_iter = (DbIteratorSetIter) vn_grid_set_iter;
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iface->move_iter = (DbIteratorMoveIter) vn_grid_move_iter;
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iface->get_param_list = (DbIteratorGetParamList) vn_grid_get_param_list;
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iface->delete_selection = (DbIteratorDeleteSelection) vn_grid_delete_selection;
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}
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