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-rw-r--r--widgets/table/e-table-one.c244
1 files changed, 244 insertions, 0 deletions
diff --git a/widgets/table/e-table-one.c b/widgets/table/e-table-one.c
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+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
+/*
+ * e-table-model.c: a one table model implementation that uses function
+ * pointers to simplify the creation of new, exotic and colorful tables in
+ * no time.
+ *
+ * Author:
+ * Miguel de Icaza (miguel@gnu.org)
+ *
+ * (C) 1999 Helix Code, Inc.
+ */
+
+#include <config.h>
+#include "e-table-one.h"
+
+#define PARENT_TYPE e_table_model_get_type ()
+
+static int
+one_column_count (ETableModel *etm)
+{
+ ETableOne *one = E_TABLE_ONE(etm);
+
+ if (one->source)
+ return e_table_model_column_count(one->source);
+ else
+ return 0;
+}
+
+static int
+one_row_count (ETableModel *etm)
+{
+ return 1;
+}
+
+static void *
+one_value_at (ETableModel *etm, int col, int row)
+{
+ ETableOne *one = E_TABLE_ONE(etm);
+
+ if (one->data)
+ return one->data[col];
+ else
+ return NULL;
+}
+
+static void
+one_set_value_at (ETableModel *etm, int col, int row, const void *val)
+{
+ ETableOne *one = E_TABLE_ONE(etm);
+
+ if (one->data && one->source) {
+ e_table_model_free_value(one->source, col, one->data[col]);
+ one->data[col] = e_table_model_duplicate_value(one->source, col, val);
+ }
+}
+
+static gboolean
+one_is_cell_editable (ETableModel *etm, int col, int row)
+{
+ ETableOne *one = E_TABLE_ONE(etm);
+
+ if (one->source)
+ return e_table_model_is_cell_editable(one->source, 0, row);
+ else
+ return FALSE;
+}
+
+/* The default for one_duplicate_value is to return the raw value. */
+static void *
+one_duplicate_value (ETableModel *etm, int col, const void *value)
+{
+ ETableOne *one = E_TABLE_ONE(etm);
+
+ if (one->source)
+ return e_table_model_duplicate_value(one->source, col, value);
+ else
+ return (void *)value;
+}
+
+static void
+one_free_value (ETableModel *etm, int col, void *value)
+{
+ ETableOne *one = E_TABLE_ONE(etm);
+
+ if (one->source)
+ e_table_model_free_value(one->source, col, value);
+}
+
+static void *
+one_initialize_value (ETableModel *etm, int col)
+{
+ ETableOne *one = E_TABLE_ONE(etm);
+
+ if (one->source)
+ return e_table_model_initialize_value (one->source, col);
+ else
+ return NULL;
+}
+
+static gboolean
+one_value_is_empty (ETableModel *etm, int col, const void *value)
+{
+ ETableOne *one = E_TABLE_ONE(etm);
+
+ if (one->source)
+ return e_table_model_value_is_empty (one->source, col, value);
+ else
+ return FALSE;
+}
+
+static char *
+one_value_to_string (ETableModel *etm, int col, const void *value)
+{
+ ETableOne *one = E_TABLE_ONE(etm);
+
+ if (one->source)
+ return e_table_model_value_to_string (one->source, col, value);
+ else
+ return g_strdup("");
+}
+
+static void
+one_destroy (GtkObject *object)
+{
+ ETableOne *one = E_TABLE_ONE(object);
+
+ if (one->source) {
+ int i;
+ int col_count;
+
+ col_count = e_table_model_column_count(one->source);
+
+ if (one->data) {
+ for (i = 0; i < col_count; i++) {
+ e_table_model_free_value(one->source, i, one->data[i]);
+ }
+ }
+
+ gtk_object_unref(GTK_OBJECT(one->source));
+ }
+
+ g_free(one->data);
+}
+
+static void
+e_table_one_class_init (GtkObjectClass *object_class)
+{
+ ETableModelClass *model_class = (ETableModelClass *) object_class;
+
+ model_class->column_count = one_column_count;
+ model_class->row_count = one_row_count;
+ model_class->value_at = one_value_at;
+ model_class->set_value_at = one_set_value_at;
+ model_class->is_cell_editable = one_is_cell_editable;
+ model_class->duplicate_value = one_duplicate_value;
+ model_class->free_value = one_free_value;
+ model_class->initialize_value = one_initialize_value;
+ model_class->value_is_empty = one_value_is_empty;
+ model_class->value_to_string = one_value_to_string;
+
+ object_class->destroy = one_destroy;
+}
+
+static void
+e_table_one_init (GtkObject *object)
+{
+ ETableOne *one = E_TABLE_ONE(object);
+
+ one->source = NULL;
+ one->data = NULL;
+}
+
+GtkType
+e_table_one_get_type (void)
+{
+ static GtkType type = 0;
+
+ if (!type){
+ GtkTypeInfo info = {
+ "ETableOne",
+ sizeof (ETableOne),
+ sizeof (ETableOneClass),
+ (GtkClassInitFunc) e_table_one_class_init,
+ (GtkObjectInitFunc) e_table_one_init,
+ NULL, /* reserved 1 */
+ NULL, /* reserved 2 */
+ (GtkClassInitFunc) NULL
+ };
+
+ type = gtk_type_unique (PARENT_TYPE, &info);
+ }
+
+ return type;
+}
+
+ETableModel *
+e_table_one_new (ETableModel *source)
+{
+ ETableOne *eto;
+ int col_count;
+ int i;
+
+ eto = gtk_type_new (e_table_one_get_type ());
+
+ eto->source = source;
+
+ col_count = e_table_model_column_count(source);
+ eto->data = g_new(void *, col_count);
+ for (i = 0; i < col_count; i++) {
+ eto->data[i] = e_table_model_initialize_value(source, i);
+ }
+
+ if (source)
+ gtk_object_ref(GTK_OBJECT(source));
+
+ return (ETableModel *) eto;
+}
+
+gint
+e_table_one_commit (ETableOne *one)
+{
+ if (one->source) {
+ int empty = TRUE;
+ int col;
+ int cols = e_table_model_column_count(one->source);
+ for (col = 0; col < cols; col++) {
+ if (!e_table_model_value_is_empty(one->source, col, one->data[col])) {
+ empty = FALSE;
+ break;
+ }
+ }
+
+ if (!empty) {
+ int row = e_table_model_append_row(one->source);
+ if (row != -1) {
+ for (col = 0; col < cols; col++) {
+ e_table_model_set_value_at(one->source, col, row, one->data[col]);
+ }
+ }
+ return row;
+ }
+ }
+ return -1;
+}