From 69f73220ff7133a566f01e357d9f12571c0f847d Mon Sep 17 00:00:00 2001
From: Andrea Zagli <azagli@libero.it>
Date: Sat, 4 Jan 2020 09:01:24 +0100
Subject: [PATCH] Added function ::data_model_to_gtktreestore.

---
 src/gdaex.c | 72 ++++++++++++++++++++++++++++++++++++++++++++++++++++-
 src/gdaex.h |  4 ++-
 2 files changed, 74 insertions(+), 2 deletions(-)

diff --git a/src/gdaex.c b/src/gdaex.c
index 4e93e9a..26cbf7a 100644
--- a/src/gdaex.c
+++ b/src/gdaex.c
@@ -1,7 +1,7 @@
 /*
  *  gdaex.c
  *
- *  Copyright (C) 2005-2019 Andrea Zagli <azagli@libero.it>
+ *  Copyright (C) 2005-2020 Andrea Zagli <azagli@libero.it>
  *
  *  This file is part of libgdaex.
  *
@@ -2649,6 +2649,76 @@ GtkListStore
 	return ret;
 }
 
+/**
+ * gdaex_data_model_to_gtktreestore:
+ * @dm: a #GdaDataModel object.
+ * @only_schema:
+ *
+ * Returns: a #GtkTreeStore, filled or not, that reflects the #GdaDataModel @dm.
+ */
+GtkTreeStore
+*gdaex_data_model_to_gtktreestore (GdaDataModel *dm,
+                                   gboolean only_schema)
+{
+	GtkTreeStore *ret;
+
+	guint cols;
+	guint col;
+
+	GdaColumn *column;
+	GType *gtypes;
+
+	guint rows;
+	guint row;
+
+	GtkTreeIter iter;
+	GValue *gval;
+
+	g_return_val_if_fail (GDA_IS_DATA_MODEL (dm), NULL);
+
+	ret = NULL;
+
+	/* GtkListStore creation */
+
+	cols = gda_data_model_get_n_columns (dm);
+	if (cols == 0)
+		{
+			g_warning (_("Invalid GdaDataModel."));
+			return NULL;
+		}
+
+	gtypes = (GType *)g_malloc0 (cols * sizeof (GType));
+
+	for (col = 0; col < cols; col++)
+		{
+			column = gda_data_model_describe_column (dm, col);
+			gtypes[col] = gda_column_get_g_type (column);
+		}
+	ret = gtk_tree_store_newv (cols, gtypes);
+	if (ret == NULL)
+		{
+			g_warning (_("Unable to create the GtkTreeModel."));
+			return NULL;
+		}
+
+	if (!only_schema)
+		{
+			/* Filling GtkListStore */
+			rows = gda_data_model_get_n_rows (dm);
+			for (row = 0; row < rows; row++)
+				{
+					gtk_tree_store_append (ret, &iter, NULL);
+					for (col = 0; col < cols; col++)
+						{
+							gval = (GValue *)gda_data_model_get_value_at (dm, col, row, NULL);
+							gtk_tree_store_set_value (ret, &iter, col, gval);
+						}
+				}
+		}
+
+	return ret;
+}
+
 /**
  * gdaex_begin:
  * @gdaex: a #GdaEx object.
diff --git a/src/gdaex.h b/src/gdaex.h
index 55cff45..373de42 100644
--- a/src/gdaex.h
+++ b/src/gdaex.h
@@ -1,7 +1,7 @@
 /*
  *  gdaex.h
  *
- *  Copyright (C) 2005-2019 Andrea Zagli <azagli@libero.it>
+ *  Copyright (C) 2005-2020 Andrea Zagli <azagli@libero.it>
  *
  *  This file is part of libgdaex.
  *
@@ -204,6 +204,8 @@ GHashTable *gdaex_data_model_row_to_hashtable_from_sql (GdaEx *gdaex, gchar *sql
 
 GtkListStore *gdaex_data_model_to_gtkliststore (GdaDataModel *dm,
                                                 gboolean only_schema);
+GtkTreeStore *gdaex_data_model_to_gtktreestore (GdaDataModel *dm,
+                                                gboolean only_schema);
 
 gboolean gdaex_begin (GdaEx *gdaex);
 
-- 
2.49.0