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-rw-r--r--widgets/misc/e-signature-combo-box.c338
1 files changed, 338 insertions, 0 deletions
diff --git a/widgets/misc/e-signature-combo-box.c b/widgets/misc/e-signature-combo-box.c
new file mode 100644
index 0000000000..be19755ef6
--- /dev/null
+++ b/widgets/misc/e-signature-combo-box.c
@@ -0,0 +1,338 @@
+#include "e-signature-combo-box.h"
+
+#include <glib/gi18n.h>
+
+#define E_SIGNATURE_COMBO_BOX_GET_PRIVATE(obj) \
+ (G_TYPE_INSTANCE_GET_PRIVATE \
+ ((obj), E_TYPE_SIGNATURE_COMBO_BOX, ESignatureComboBoxPrivate))
+
+enum {
+ COLUMN_STRING,
+ COLUMN_SIGNATURE
+};
+
+enum {
+ REFRESHED,
+ LAST_SIGNAL
+};
+
+struct _ESignatureComboBoxPrivate {
+ ESignatureList *signature_list;
+ GHashTable *index;
+};
+
+static gpointer parent_class;
+static guint signal_ids[LAST_SIGNAL];
+
+static void
+signature_combo_box_refresh_cb (ESignatureList *signature_list,
+ ESignature *unused,
+ ESignatureComboBox *combo_box)
+{
+ GtkListStore *store;
+ GtkTreeModel *model;
+ GtkTreeIter tree_iter;
+ EIterator *signature_iter;
+ ESignature *signature;
+ GHashTable *index;
+ GList *list = NULL;
+ GList *iter;
+
+ store = gtk_list_store_new (2, G_TYPE_STRING, E_TYPE_SIGNATURE);
+ model = GTK_TREE_MODEL (store);
+ index = combo_box->priv->index;
+
+ g_hash_table_remove_all (index);
+
+ gtk_list_store_append (store, &tree_iter);
+ gtk_list_store_set (
+ store, &tree_iter,
+ COLUMN_STRING, _("None"),
+ COLUMN_SIGNATURE, NULL, -1);
+
+ if (signature_list == NULL)
+ goto skip;
+
+ /* Build a list of ESignatures to display. */
+ signature_iter = e_list_get_iterator (E_LIST (signature_list));
+ while (e_iterator_is_valid (signature_iter)) {
+
+ /* XXX EIterator misuses const. */
+ signature = (ESignature *) e_iterator_get (signature_iter);
+ list = g_list_prepend (list, signature);
+ e_iterator_next (signature_iter);
+ }
+ g_object_unref (signature_iter);
+
+ list = g_list_reverse (list);
+
+ /* Populate the list store and index. */
+ for (iter = list; iter != NULL; iter = iter->next) {
+ GtkTreeRowReference *reference;
+ GtkTreePath *path;
+ const gchar *string;
+
+ signature = iter->data;
+
+ if (signature->autogen)
+ string = _("Autogenerated");
+ else
+ string = signature->name;
+
+ gtk_list_store_append (store, &tree_iter);
+ gtk_list_store_set (
+ store, &tree_iter,
+ COLUMN_STRING, string,
+ COLUMN_SIGNATURE, signature, -1);
+
+ path = gtk_tree_model_get_path (model, &tree_iter);
+ reference = gtk_tree_row_reference_new (model, path);
+ g_hash_table_insert (index, signature, reference);
+ gtk_tree_path_free (path);
+ }
+
+skip:
+ /* Restore the previously selected signature. */
+ signature = e_signature_combo_box_get_active (combo_box);
+ if (signature != NULL)
+ g_object_ref (signature);
+ gtk_combo_box_set_model (GTK_COMBO_BOX (combo_box), model);
+ e_signature_combo_box_set_active (combo_box, signature);
+ if (signature != NULL)
+ g_object_unref (signature);
+
+ g_signal_emit (combo_box, signal_ids[REFRESHED], 0);
+}
+
+static GObject *
+signature_combo_box_constructor (GType type,
+ guint n_construct_properties,
+ GObjectConstructParam *construct_properties)
+{
+ GObject *object;
+ GtkCellRenderer *renderer;
+
+ /* Chain up to parent's constructor() method. */
+ object = G_OBJECT_CLASS (parent_class)->constructor (
+ type, n_construct_properties, construct_properties);
+
+ renderer = gtk_cell_renderer_text_new ();
+
+ gtk_cell_layout_pack_start (
+ GTK_CELL_LAYOUT (object), renderer, TRUE);
+ gtk_cell_layout_add_attribute (
+ GTK_CELL_LAYOUT (object), renderer, "text", COLUMN_STRING);
+
+ e_signature_combo_box_set_signature_list (
+ E_SIGNATURE_COMBO_BOX (object), NULL);
+
+ return object;
+}
+
+static void
+signature_combo_box_dispose (GObject *object)
+{
+ ESignatureComboBoxPrivate *priv;
+
+ priv = E_SIGNATURE_COMBO_BOX_GET_PRIVATE (object);
+
+ if (priv->signature_list != NULL) {
+ g_signal_handlers_disconnect_by_func (
+ priv->signature_list,
+ signature_combo_box_refresh_cb, object);
+ g_object_unref (priv->signature_list);
+ priv->signature_list = NULL;
+ }
+
+ g_hash_table_remove_all (priv->index);
+
+ /* Chain up to parent's dispose() method. */
+ G_OBJECT_CLASS (parent_class)->dispose (object);
+}
+
+static void
+signature_combo_box_finalize (GObject *object)
+{
+ ESignatureComboBoxPrivate *priv;
+
+ priv = E_SIGNATURE_COMBO_BOX_GET_PRIVATE (object);
+
+ g_hash_table_destroy (priv->index);
+
+ /* Chain up to parent's finalize() method. */
+ G_OBJECT_CLASS (parent_class)->finalize (object);
+}
+
+static void
+signature_combo_box_class_init (ESignatureComboBoxClass *class)
+{
+ GObjectClass *object_class;
+
+ parent_class = g_type_class_peek_parent (class);
+ g_type_class_add_private (class, sizeof (ESignatureComboBoxPrivate));
+
+ object_class = G_OBJECT_CLASS (class);
+ object_class->constructor = signature_combo_box_constructor;
+ object_class->dispose = signature_combo_box_dispose;
+ object_class->finalize = signature_combo_box_finalize;
+
+ signal_ids[REFRESHED] = g_signal_new (
+ "refreshed",
+ G_TYPE_FROM_CLASS (class),
+ G_SIGNAL_RUN_LAST,
+ 0, NULL, NULL,
+ g_cclosure_marshal_VOID__VOID,
+ G_TYPE_NONE, 0);
+}
+
+static void
+signature_combo_box_init (ESignatureComboBox *combo_box)
+{
+ GHashTable *index;
+
+ /* Reverse-lookup index */
+ index = g_hash_table_new_full (
+ g_direct_hash, g_direct_equal,
+ (GDestroyNotify) g_object_unref,
+ (GDestroyNotify) gtk_tree_row_reference_free);
+
+ combo_box->priv = E_SIGNATURE_COMBO_BOX_GET_PRIVATE (combo_box);
+ combo_box->priv->index = index;
+}
+
+GType
+e_signature_combo_box_get_type (void)
+{
+ static GType type = 0;
+
+ if (G_UNLIKELY (type == 0)) {
+ static const GTypeInfo type_info = {
+ sizeof (ESignatureComboBoxClass),
+ (GBaseInitFunc) NULL,
+ (GBaseFinalizeFunc) NULL,
+ (GClassInitFunc) signature_combo_box_class_init,
+ (GClassFinalizeFunc) NULL,
+ NULL, /* class_data */
+ sizeof (ESignatureComboBox),
+ 0, /* n_preallocs */
+ (GInstanceInitFunc) signature_combo_box_init,
+ NULL /* value_table */
+ };
+
+ type = g_type_register_static (
+ GTK_TYPE_COMBO_BOX, "ESignatureComboBox",
+ &type_info, 0);
+ }
+
+ return type;
+}
+
+GtkWidget *
+e_signature_combo_box_new (void)
+{
+ return g_object_new (E_TYPE_SIGNATURE_COMBO_BOX, NULL);
+}
+
+void
+e_signature_combo_box_set_signature_list (ESignatureComboBox *combo_box,
+ ESignatureList *signature_list)
+{
+ ESignatureComboBoxPrivate *priv;
+
+ g_return_if_fail (E_IS_SIGNATURE_COMBO_BOX (combo_box));
+
+ if (signature_list != NULL)
+ g_return_if_fail (E_IS_SIGNATURE_LIST (signature_list));
+
+ priv = E_SIGNATURE_COMBO_BOX_GET_PRIVATE (combo_box);
+
+ if (priv->signature_list != NULL) {
+ g_signal_handlers_disconnect_by_func (
+ priv->signature_list,
+ signature_combo_box_refresh_cb, combo_box);
+ g_object_unref (priv->signature_list);
+ priv->signature_list = NULL;
+ }
+
+ if (signature_list != NULL) {
+ priv->signature_list = g_object_ref (signature_list);
+
+ /* Listen for changes to the signature list. */
+ g_signal_connect (
+ priv->signature_list, "signature-added",
+ G_CALLBACK (signature_combo_box_refresh_cb),
+ combo_box);
+ g_signal_connect (
+ priv->signature_list, "signature-changed",
+ G_CALLBACK (signature_combo_box_refresh_cb),
+ combo_box);
+ g_signal_connect (
+ priv->signature_list, "signature-removed",
+ G_CALLBACK (signature_combo_box_refresh_cb),
+ combo_box);
+ }
+
+ signature_combo_box_refresh_cb (signature_list, NULL, combo_box);
+}
+
+ESignature *
+e_signature_combo_box_get_active (ESignatureComboBox *combo_box)
+{
+ ESignature *signature;
+ GtkTreeModel *model;
+ GtkTreeIter iter;
+ gboolean iter_set;
+
+ g_return_val_if_fail (E_IS_SIGNATURE_COMBO_BOX (combo_box), NULL);
+
+ iter_set = gtk_combo_box_get_active_iter (
+ GTK_COMBO_BOX (combo_box), &iter);
+ if (!iter_set)
+ return NULL;
+
+ model = gtk_combo_box_get_model (GTK_COMBO_BOX (combo_box));
+ gtk_tree_model_get (model, &iter, COLUMN_SIGNATURE, &signature, -1);
+
+ return signature;
+}
+
+gboolean
+e_signature_combo_box_set_active (ESignatureComboBox *combo_box,
+ ESignature *signature)
+{
+ GtkTreeRowReference *reference;
+ GtkTreeModel *model;
+ GtkTreePath *path;
+ GtkTreeIter iter;
+ gboolean iter_set;
+
+ g_return_val_if_fail (E_IS_SIGNATURE_COMBO_BOX (combo_box), FALSE);
+
+ if (signature != NULL)
+ g_return_val_if_fail (E_IS_SIGNATURE (signature), FALSE);
+
+ /* NULL means select "None" (always the first item). */
+ if (signature == NULL) {
+ gtk_combo_box_set_active (GTK_COMBO_BOX (combo_box), 0);
+ return TRUE;
+ }
+
+ /* Lookup the tree row reference for the signature. */
+ reference = g_hash_table_lookup (combo_box->priv->index, signature);
+ if (reference == NULL)
+ return FALSE;
+
+ /* Convert the reference to a tree iterator. */
+ path = gtk_tree_row_reference_get_path (reference);
+ model = gtk_combo_box_get_model (GTK_COMBO_BOX (combo_box));
+ iter_set = gtk_tree_model_get_iter (model, &iter, path);
+ gtk_tree_path_free (path);
+
+ if (!iter_set)
+ return FALSE;
+
+ /* Activate the corresponding combo box item. */
+ gtk_combo_box_set_active_iter (GTK_COMBO_BOX (combo_box), &iter);
+
+ return TRUE;
+}