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-rw-r--r--widgets/table/e-table-selection-model.c274
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
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index 0000000000..9a199f74e8
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+++ 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 ());
+}