360 lines
8.7 KiB
C
360 lines
8.7 KiB
C
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/*
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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-column.h"
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#include "vn-grid.h"
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G_DEFINE_ABSTRACT_TYPE (VnColumn, vn_column, GTK_TYPE_TREE_VIEW_COLUMN);
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//+++++++++++++++++++++++++++++++++++++++++++++++++++ Private
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static void vn_column_value_changed (VnColumn * obj, const gchar * path, const GValue * value)
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{
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DbIter iter;
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vn_column_get_iter (obj, path, &iter);
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db_model_set_value (vn_column_get_model (obj),
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&iter, obj->column_index, value, NULL);
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}
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static void vn_column_data_func (GtkTreeViewColumn * col, GtkCellRenderer * cell,
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GtkTreeModel * model, GtkTreeIter * iter, VnColumn * obj)
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{
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gchar * background;
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DbIter dbiter;
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DbModel * dbmodel;
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GValue value = {0};
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gtk_tree_model_get_value (model, iter, obj->column_index, &value);
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obj->set_value (obj, model, iter, cell, &value);
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g_value_unset (&value);
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vn_gtk_tree_iter_to_db_iter (iter, &dbiter);
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g_object_get (model, "model", &dbmodel, NULL);
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DbModelRowOp ops = db_model_get_row_operations (dbmodel, &dbiter);
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g_object_unref (dbmodel);
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if (ops & DB_MODEL_ROW_OP_DELETE)
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background = "#fcc";
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else if (ops & DB_MODEL_ROW_OP_INSERT || ops & DB_MODEL_ROW_OP_UPDATE)
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background = "#cfc";
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else
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background = NULL;
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g_object_set (cell, "cell-background", background, NULL);
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}
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static void vn_column_set_renderer (VnColumn * obj, GtkCellRenderer * cell)
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{
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GtkTreeViewColumn * column;
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obj->cell = cell;
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obj->set_value = VN_COLUMN_GET_CLASS (obj)->set_value;
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VN_COLUMN_GET_CLASS (obj)->set_editable (obj, obj->editable);
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column = GTK_TREE_VIEW_COLUMN (obj);
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gtk_tree_view_column_pack_start (column, cell, TRUE);
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gtk_tree_view_column_set_cell_data_func (column, cell,
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(GtkTreeCellDataFunc) vn_column_data_func, obj, NULL);
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}
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static void vn_column_update_column_index (VnColumn * obj)
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{
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if (obj->column_name)
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{
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DbModel * model = vn_column_get_model (obj);
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if (model)
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{
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obj->column_index = db_model_get_column_index (model, obj->column_name);
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if (obj->column_index >= 0)
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gtk_tree_view_column_set_sort_column_id (
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GTK_TREE_VIEW_COLUMN (obj), obj->column_index);
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}
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}
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++ Public
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/**
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* vn_column_get_column_name:
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* @obj: the #VnColumn
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*
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* Gets the column name.
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*
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* Return value: the column name
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**/
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const gchar * vn_column_get_column_name (VnColumn * obj)
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{
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g_return_val_if_fail (VN_IS_COLUMN (obj), NULL);
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return obj->column_name;
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}
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/**
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* vn_column_set_column_name:
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* @obj: the #VnColumn
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* @name: the column name
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*
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* Sets the column name.
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**/
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void vn_column_set_column_name (VnColumn * obj, const gchar * name)
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{
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g_return_if_fail (VN_IS_COLUMN (obj));
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g_free (obj->column_name);
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obj->column_name = g_strdup (name);
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vn_column_update_column_index (obj);
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}
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/**
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* vn_column_get_column_index:
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* @obj: the #VnColumn
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*
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* Gets the column index.
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*
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* Return value: the column index
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**/
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gint vn_column_get_column_index (VnColumn * obj)
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{
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g_return_val_if_fail (VN_IS_COLUMN (obj), -1);
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return obj->column_index;
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}
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/**
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* vn_column_set_column_index:
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* @obj: the #VnColumn
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* @index: the column index
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*
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* Sets the column index.
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**/
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void vn_column_set_column_index (VnColumn * obj, gint index)
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{
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g_return_if_fail (VN_IS_COLUMN (obj));
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g_return_if_fail (index >= -1);
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obj->column_index = index;
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vn_column_set_column_name (obj, NULL);
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if (index >= 0)
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gtk_tree_view_column_set_sort_column_id (
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GTK_TREE_VIEW_COLUMN (obj), index);
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}
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/**
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* vn_column_get_editable:
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* @obj: the #VnColumn
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*
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* Gets if the column can be edited by the user.
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*
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* Return value: %TRUE if its editable, %FALSE otherwhise
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**/
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gboolean vn_column_get_editable (VnColumn * obj)
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{
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g_return_val_if_fail (VN_IS_COLUMN (obj), FALSE);
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return obj->editable;
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}
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/**
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* vn_column_set_editable:
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* @obj: the #VnColumn
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* @editable: a %gboolean indicating whether the column value is editable
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*
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* Sets if the column could be edited by the user.
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**/
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void vn_column_set_editable (VnColumn * obj, gboolean editable)
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{
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g_return_if_fail (VN_IS_COLUMN (obj));
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obj->editable = editable;
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VN_COLUMN_GET_CLASS (obj)->set_editable (obj, editable);
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}
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/**
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* vn_column_get_model:
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* @obj: the #VnColumn
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*
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* Gets the model used by the main #VnGrid.
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*
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* Return value: (transfer none): the #DbModel if has it, %NULL otherwise.
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**/
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DbModel * vn_column_get_model (VnColumn * obj)
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{
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g_return_val_if_fail (VN_IS_COLUMN (obj), NULL);
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GtkWidget * grid = gtk_tree_view_column_get_tree_view (
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GTK_TREE_VIEW_COLUMN (obj));
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if (grid)
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return vn_grid_get_model (VN_GRID (grid));
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return NULL;
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}
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/**
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* vn_column_get_iter:
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* @obj: the #VnColumn
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* @path: the path string
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* @iter: (out): the #DbIter to be set
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*
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* Gets a #DbIter from a #GtkTreePath string.
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*
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* Return value: %TRUE if the iter could be obtained, %FALSE otherwise.
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**/
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gboolean vn_column_get_iter (VnColumn * obj, const gchar * path, DbIter * iter)
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{
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DbModel * model;
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GtkTreePath * tree_path;
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g_return_val_if_fail (VN_IS_COLUMN (obj), FALSE);
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g_return_val_if_fail (iter, FALSE);
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tree_path = gtk_tree_path_new_from_string (path);
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model = vn_column_get_model (obj);
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if (!tree_path)
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g_warning ("VnColumn: Invalid path.");
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else if (gtk_tree_path_get_depth (tree_path) < 1)
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g_warning ("VnColumn: Path has no indices.");
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else if (!model)
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g_warning ("VnColumn: Tree view has no model assigned.");
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else
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{
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db_model_get_iter (model, iter, gtk_tree_path_get_indices (tree_path)[0]);
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return TRUE;
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}
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gtk_tree_path_free (tree_path);
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return FALSE;
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}
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/**
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* vn_column_model_changed:
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* @obj: the #VnColumn
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*
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* This function is used primarily by the #VnGrid. Warns the column that the
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* model has changed.
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**/
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void vn_column_model_changed (VnColumn * obj)
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{
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VnColumnClass * klass;
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g_return_if_fail (VN_IS_COLUMN (obj));
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klass = VN_COLUMN_GET_CLASS (obj);
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vn_column_update_column_index (obj);
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if (klass->model_changed)
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klass->model_changed (obj);
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}
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//+++++++++++++++++++++++++++++++++++++++++++++++++++ Properties
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enum
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{
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PROP_COLUMN_INDEX = 1
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,PROP_COLUMN_NAME
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,PROP_EDITABLE
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};
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static void vn_column_set_property (VnColumn * 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_COLUMN_INDEX:
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vn_column_set_column_index (obj, g_value_get_int (value));
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break;
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case PROP_COLUMN_NAME:
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vn_column_set_column_name (obj, g_value_get_string (value));
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break;
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case PROP_EDITABLE:
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vn_column_set_editable (obj, 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 (obj, id, pspec);
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}
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}
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static void vn_column_get_property (VnColumn * 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_COLUMN_INDEX:
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g_value_set_int (value, obj->column_index);
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break;
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case PROP_COLUMN_NAME:
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g_value_set_string (value, obj->column_name);
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break;
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case PROP_EDITABLE:
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g_value_set_boolean (value, obj->editable);
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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_column_init (VnColumn * obj)
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{
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obj->column_index = -1;
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obj->column_name = NULL;
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}
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static void vn_column_finalize (VnColumn * obj)
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{
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G_OBJECT_CLASS (vn_column_parent_class)->finalize (G_OBJECT (obj));
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}
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static void vn_column_class_init (VnColumnClass * klass)
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{
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GObjectClass * k = G_OBJECT_CLASS (klass);
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k->finalize = (GObjectFinalizeFunc) vn_column_finalize;
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k->set_property = (GObjectSetPropertyFunc) vn_column_set_property;
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k->get_property = (GObjectGetPropertyFunc) vn_column_get_property;
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klass->value_changed = vn_column_value_changed;
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klass->set_renderer = vn_column_set_renderer;
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klass->model_changed = NULL;
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g_object_class_install_property (k, PROP_COLUMN_INDEX,
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g_param_spec_int ("column-index"
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,_("Column index")
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,_("The column index in the model")
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,-1, 255, -1
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,G_PARAM_READWRITE
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));
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g_object_class_install_property (k, PROP_COLUMN_NAME,
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g_param_spec_string ("column-name"
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,_("Column name")
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,_("The referenced column name")
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,NULL
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,G_PARAM_READWRITE
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));
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g_object_class_install_property (k, PROP_EDITABLE,
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g_param_spec_boolean ("editable"
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,_("Editable")
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,_("Whether the column values are editable")
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,FALSE
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,G_PARAM_CONSTRUCT | G_PARAM_READWRITE
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));
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}
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