diff options
Diffstat (limited to 'widgets/misc/e-signature-combo-box.c')
| -rw-r--r-- | widgets/misc/e-signature-combo-box.c | 338 |
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; +} |