New files for doing a selection model. Not finished yet and thus not in

2000-07-25  Christopher James Lahey  <clahey@helixcode.com>

	* e-table-selection-model.c, e-table-selection-model.h: New files
	for doing a selection model.  Not finished yet and thus not in
	Makefile.am.

	* e-table.c, e-table.h: Renamed the new dnd signals so that they
	won't conflict with the widget signals.

svn path=/trunk/; revision=4326

1 files changed, 274 insertions, 0 deletions

diff --git a/widgets/table/e-table-selection-model.c b/widgets/table/e-table-selection-model.c
new file mode 100644
index 0000000000..9a199f74e8
--- /dev/null
+++ b/widgets/table/e-table-selection-model.c
@@ -0,0 +1,274 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * e-table-selection-model.c: a Table Selection Model
+ *
+ * Author:
+ *   Miguel de Icaza (miguel@gnu.org)
+ *
+ * (C) 1999 Helix Code, Inc.
+ */
+#include <config.h>
+#include <gtk/gtksignal.h>
+#include "e-table-selection-model.h"
+#include "e-util/e-util.h"
+
+#define ETSM_CLASS(e) ((ETableSelectionModelClass *)((GtkObject *)e)->klass)
+
+#define PARENT_TYPE gtk_object_get_type ()
+					  
+
+static GtkObjectClass *e_table_selection_model_parent_class;
+
+enum {
+	SELECTION_MODEL_CHANGED,
+	GROUP_SELECTION_CHANGED,
+	LAST_SIGNAL
+};
+
+static guint e_table_selection_model_signals [LAST_SIGNAL] = { 0, };
+
+static void
+model_changed(ETableModel *etm, ETableSelectionModel *etsm)
+{
+	g_free(etsm->selection);
+	etsm->selection = NULL;
+	etsm->row_count = -1;
+}
+
+static void
+model_row_inserted(ETableModel *etm, int row, ETableSelectionModel *etsm)
+{
+	int box;
+	int i;
+	int offset;
+	if(etsm->row_count >= 0) {
+		if ((etsm->row_count & 0x1f /*%32*/) == 0) {
+			etsm->selection = e_realloc(etsm->selection, (etsm->row_count >> 5/* /32 */) + 1);
+			etsm->selection[etsm->row_count >> 5] = 0;
+		}
+		box = row >> 5;
+		for (i = etsm->row_count >> 5; i > box; i--) {
+			etsm->selection[i] = (etsm->selection[i] >> 1) & (etsm->selection[i - 1] << 31)
+		}
+		offset = row & 0x1f;
+		etsm->selection[i] = ((etsm->selection[i] >> (32 - offset)) << (31 - offset)) & ((etsm->selection[i] << offset) >> offset);
+	}
+}
+
+inline static void
+add_model(ETableSelectionModel *etsm, ETableModel *model)
+{
+	etsm->model = model;
+	if (model)
+		gtk_object_ref(GTK_OBJECT(model));
+}
+
+inline static void
+drop_model(ETableSelectionModel *etsm)
+{
+	if (etsm->model)
+		gtk_object_unref(GTK_OBJECT(etsm->model));
+	etsm->model = NULL;
+}
+
+static void
+etsm_destroy (GtkObject *object)
+{
+	ETableSelectionModel *etsm;
+
+	etsm = E_TABLE_SELECTION_MODEL (object);
+	
+	g_free(etsm->selction);
+}
+
+static void
+e_table_selection_model_init (ETableSelectionModel *selection)
+{
+	selection->selection = NULL;
+	selection->row_count = -1;
+}
+
+static void
+e_table_selection_model_class_init (ETableSelectionModelClass *klass)
+{
+	GtkObjectClass *object_class;
+
+	e_table_selection_model_parent_class = gtk_type_class (gtk_object_get_type ());
+
+	object_class = GTK_OBJECT_CLASS(klass);
+	
+	object_class->destroy = etsm_destroy;
+
+	e_table_selection_model_signals [SELECTION_MODEL_CHANGED] =
+		gtk_signal_new ("selection_model_changed",
+				GTK_RUN_LAST,
+				object_class->type,
+				GTK_SIGNAL_OFFSET (ETableSelectionModelClass, selection_model_changed),
+				gtk_marshal_NONE__NONE,
+				GTK_TYPE_NONE, 0);
+
+	e_table_selection_model_signals [GROUP_SELECTION_CHANGED] =
+		gtk_signal_new ("group_selection_changed",
+				GTK_RUN_LAST,
+				object_class->type,
+				GTK_SIGNAL_OFFSET (ETableSelectionModelClass, group_selection_changed),
+				gtk_marshal_NONE__NONE,
+				GTK_TYPE_NONE, 0);
+
+	klass->selection_model_changed = NULL;
+	klass->group_selection_changed = NULL;
+
+	gtk_object_class_add_signals (object_class, e_table_selection_model_signals, LAST_SIGNAL);
+}
+
+E_MAKE_TYPE(e_table_selection_model, "ETableSelectionModel", ETableSelectionModel,
+	    e_table_selection_model_class_init, e_table_selection_model_init, PARENT_TYPE);
+
+static void
+e_table_selection_model_selection_model_changed (ETableSelectionModel *selection)
+{
+	g_return_if_fail (selection != NULL);
+	g_return_if_fail (E_IS_TABLE_SELECTION_MODEL (selection));
+	
+	if (selection->frozen) {
+		selection->selection_model_changed = 1;
+	} else {
+		gtk_signal_emit (GTK_OBJECT (selection),
+				 e_table_selection_model_signals [SELECTION_MODEL_CHANGED]);
+	}
+}
+
+static void
+e_table_selection_model_group_selection_changed (ETableSelectionModel *selection)
+{
+	g_return_if_fail (selection != NULL);
+	g_return_if_fail (E_IS_TABLE_SELECTION_MODEL (selection));
+	
+	if (selection->frozen) {
+		selection->group_selection_changed = 1;
+	} else {
+		gtk_signal_emit (GTK_OBJECT (selection),
+				 e_table_selection_model_signals [GROUP_SELECTION_CHANGED]);
+	}
+}
+
+void 
+e_table_selection_model_freeze             (ETableSelectionModel *selection)
+{
+	selection->frozen = 1;
+}
+
+void
+e_table_selection_model_thaw               (ETableSelectionModel *selection)
+{
+	selection->frozen = 0;
+	if (selection->selection_model_changed) {
+		selection->selection_model_changed = 0;
+		e_table_selection_model_selection_model_changed(selection);
+	}
+	if (selection->group_selection_changed) {
+		selection->group_selection_changed = 0;
+		e_table_selection_model_group_selection_changed(selection);
+	}
+}
+
+
+guint
+e_table_selection_model_grouping_get_count (ETableSelectionModel *selection)
+{
+	return selection->group_count;
+}
+
+static void
+e_table_selection_model_grouping_real_truncate  (ETableSelectionModel *selection, int length)
+{
+	if (length < selection->group_count) {
+		selection->group_count = length;
+	}
+	if (length > selection->group_count) {
+		selection->groupings = g_realloc(selection->groupings, length * sizeof(ETableSortColumn));
+		selection->group_count = length;
+	}
+}
+
+void
+e_table_selection_model_grouping_truncate  (ETableSelectionModel *selection, int length)
+{
+	e_table_selection_model_grouping_real_truncate(selection, length);
+	e_table_selection_model_group_selection_changed(selection);
+}
+
+ETableSortColumn
+e_table_selection_model_grouping_get_nth   (ETableSelectionModel *selection, int n)
+{
+	if (n < selection->group_count) {
+		return selection->groupings[n];
+	} else {
+		ETableSortColumn fake = {0, 0};
+		return fake;
+	}
+}
+
+void
+e_table_selection_model_grouping_set_nth   (ETableSelectionModel *selection, int n, ETableSortColumn column)
+{
+	if (n >= selection->group_count) {
+		e_table_selection_model_grouping_real_truncate(selection, n + 1);
+	}
+	selection->groupings[n] = column;
+	e_table_selection_model_group_selection_changed(selection);
+}
+
+
+guint
+e_table_selection_model_sorting_get_count (ETableSelectionModel *selection)
+{
+	return selection->sort_count;
+}
+
+static void
+e_table_selection_model_sorting_real_truncate  (ETableSelectionModel *selection, int length)
+{
+	if (length < selection->sort_count) {
+		selection->sort_count = length;
+	}
+	if (length > selection->sort_count) {
+		selection->sortings = g_realloc(selection->sortings, length * sizeof(ETableSortColumn));
+		selection->sort_count = length;
+	}
+}
+
+void
+e_table_selection_model_sorting_truncate  (ETableSelectionModel *selection, int length)
+{
+	e_table_selection_model_sorting_real_truncate  (selection, length);
+	e_table_selection_model_selection_model_changed(selection);
+}
+
+ETableSortColumn
+e_table_selection_model_sorting_get_nth   (ETableSelectionModel *selection, int n)
+{
+	if (n < selection->sort_count) {
+		return selection->sortings[n];
+	} else {
+		ETableSortColumn fake = {0, 0};
+		return fake;
+	}
+}
+
+void
+e_table_selection_model_sorting_set_nth   (ETableSelectionModel *selection, int n, ETableSortColumn column)
+{
+	if (n >= selection->sort_count) {
+		e_table_selection_model_sorting_real_truncate(selection, n + 1);
+	}
+	selection->sortings[n] = column;
+	e_table_selection_model_selection_model_changed(selection);
+}
+
+
+ETableSelectionModel *
+e_table_selection_model_new (void)
+{
+	return gtk_type_new (e_table_selection_model_get_type ());
+}