diff options
Diffstat (limited to 'widgets/misc/e-signature-tree-view.c')
| -rw-r--r-- | widgets/misc/e-signature-tree-view.c | 448 |
1 files changed, 448 insertions, 0 deletions
diff --git a/widgets/misc/e-signature-tree-view.c b/widgets/misc/e-signature-tree-view.c new file mode 100644 index 0000000000..5c931c8d93 --- /dev/null +++ b/widgets/misc/e-signature-tree-view.c @@ -0,0 +1,448 @@ +/* + * e-signature-tree-view.c + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) version 3. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with the program; if not, see <http://www.gnu.org/licenses/> + * + * + * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com) + * + */ + +#include "e-signature-tree-view.h" + +#define E_SIGNATURE_TREE_VIEW_GET_PRIVATE(obj) \ + (G_TYPE_INSTANCE_GET_PRIVATE \ + ((obj), E_TYPE_SIGNATURE_TREE_VIEW, ESignatureTreeViewPrivate)) + +enum { + COLUMN_STRING, + COLUMN_SIGNATURE +}; + +enum { + PROP_0, + PROP_SELECTED, + PROP_SIGNATURE_LIST +}; + +enum { + REFRESHED, + LAST_SIGNAL +}; + +struct _ESignatureTreeViewPrivate { + ESignatureList *signature_list; + GHashTable *index; +}; + +static gpointer parent_class; +static guint signals[LAST_SIGNAL]; + +static void +signature_tree_view_refresh_cb (ESignatureList *signature_list, + ESignature *unused, + ESignatureTreeView *tree_view) +{ + 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 = tree_view->priv->index; + + g_hash_table_remove_all (index); + + 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 *name; + + signature = iter->data; + + /* Skip autogenerated signatures. */ + if (e_signature_get_autogenerated (signature)) + continue; + + name = e_signature_get_name (signature); + + gtk_list_store_append (store, &tree_iter); + gtk_list_store_set ( + store, &tree_iter, + COLUMN_STRING, name, + 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_tree_view_get_selected (tree_view); + if (signature != NULL) + g_object_ref (signature); + gtk_tree_view_set_model (GTK_TREE_VIEW (tree_view), model); + e_signature_tree_view_set_selected (tree_view, signature); + if (signature != NULL) + g_object_unref (signature); + + g_signal_emit (tree_view, signals[REFRESHED], 0); +} + +static void +signature_tree_view_selection_changed_cb (ESignatureTreeView *tree_view) +{ + g_object_notify (G_OBJECT (tree_view), "selected"); +} + +static GObject * +signature_tree_view_constructor (GType type, + guint n_construct_properties, + GObjectConstructParam *construct_properties) +{ + GObject *object; + GtkTreeView *tree_view; + GtkTreeViewColumn *column; + GtkCellRenderer *renderer; + + /* Chain up to parent's constructor() method. */ + object = G_OBJECT_CLASS (parent_class)->constructor ( + type, n_construct_properties, construct_properties); + + tree_view = GTK_TREE_VIEW (object); + gtk_tree_view_set_headers_visible (tree_view, FALSE); + + column = gtk_tree_view_column_new (); + renderer = gtk_cell_renderer_text_new (); + gtk_tree_view_column_pack_start (column, renderer, TRUE); + gtk_tree_view_column_add_attribute ( + column, renderer, "text", COLUMN_STRING); + gtk_tree_view_append_column (tree_view, column); + + return object; +} + +static void +signature_tree_view_set_property (GObject *object, + guint property_id, + const GValue *value, + GParamSpec *pspec) +{ + switch (property_id) { + case PROP_SELECTED: + e_signature_tree_view_set_selected ( + E_SIGNATURE_TREE_VIEW (object), + g_value_get_object (value)); + return; + + case PROP_SIGNATURE_LIST: + e_signature_tree_view_set_signature_list ( + E_SIGNATURE_TREE_VIEW (object), + g_value_get_object (value)); + return; + } + + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); +} + +static void +signature_tree_view_get_property (GObject *object, + guint property_id, + GValue *value, + GParamSpec *pspec) +{ + switch (property_id) { + case PROP_SELECTED: + g_value_set_object ( + value, + e_signature_tree_view_get_selected ( + E_SIGNATURE_TREE_VIEW (object))); + return; + + case PROP_SIGNATURE_LIST: + g_value_set_object ( + value, + e_signature_tree_view_get_signature_list ( + E_SIGNATURE_TREE_VIEW (object))); + return; + } + + G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec); +} + +static void +signature_tree_view_dispose (GObject *object) +{ + ESignatureTreeViewPrivate *priv; + + priv = E_SIGNATURE_TREE_VIEW_GET_PRIVATE (object); + + if (priv->signature_list != NULL) { + g_signal_handlers_disconnect_by_func ( + priv->signature_list, + signature_tree_view_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_tree_view_finalize (GObject *object) +{ + ESignatureTreeViewPrivate *priv; + + priv = E_SIGNATURE_TREE_VIEW_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_tree_view_class_init (ESignatureTreeViewClass *class) +{ + GObjectClass *object_class; + + parent_class = g_type_class_peek_parent (class); + g_type_class_add_private (class, sizeof (ESignatureTreeViewPrivate)); + + object_class = G_OBJECT_CLASS (class); + object_class->constructor = signature_tree_view_constructor; + object_class->set_property = signature_tree_view_set_property; + object_class->get_property = signature_tree_view_get_property; + object_class->dispose = signature_tree_view_dispose; + object_class->finalize = signature_tree_view_finalize; + + g_object_class_install_property ( + object_class, + PROP_SELECTED, + g_param_spec_object ( + "selected", + "Selected Signature", + NULL, + E_TYPE_SIGNATURE, + G_PARAM_READWRITE)); + + g_object_class_install_property ( + object_class, + PROP_SIGNATURE_LIST, + g_param_spec_object ( + "signature-list", + "Signature List", + NULL, + E_TYPE_SIGNATURE_LIST, + G_PARAM_READWRITE | + G_PARAM_CONSTRUCT)); + + signals[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_tree_view_init (ESignatureTreeView *tree_view) +{ + GHashTable *index; + GtkTreeSelection *selection; + + /* 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); + + tree_view->priv = E_SIGNATURE_TREE_VIEW_GET_PRIVATE (tree_view); + tree_view->priv->index = index; + + selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view)); + + g_signal_connect_swapped ( + selection, "changed", + G_CALLBACK (signature_tree_view_selection_changed_cb), + tree_view); +} + +GType +e_signature_tree_view_get_type (void) +{ + static GType type = 0; + + if (G_UNLIKELY (type == 0)) { + static const GTypeInfo type_info = { + sizeof (ESignatureTreeViewClass), + (GBaseInitFunc) NULL, + (GBaseFinalizeFunc) NULL, + (GClassInitFunc) signature_tree_view_class_init, + (GClassFinalizeFunc) NULL, + NULL, /* class_data */ + sizeof (ESignatureTreeView), + 0, /* n_preallocs */ + (GInstanceInitFunc) signature_tree_view_init, + NULL /* value_table */ + }; + + type = g_type_register_static ( + GTK_TYPE_TREE_VIEW, "ESignatureTreeView", + &type_info, 0); + } + + return type; +} + +GtkWidget * +e_signature_tree_view_new (void) +{ + return g_object_new (E_TYPE_SIGNATURE_TREE_VIEW, NULL); +} + +ESignatureList * +e_signature_tree_view_get_signature_list (ESignatureTreeView *tree_view) +{ + g_return_val_if_fail (E_IS_SIGNATURE_TREE_VIEW (tree_view), NULL); + + return tree_view->priv->signature_list; +} + +void +e_signature_tree_view_set_signature_list (ESignatureTreeView *tree_view, + ESignatureList *signature_list) +{ + ESignatureTreeViewPrivate *priv; + + g_return_if_fail (E_IS_SIGNATURE_TREE_VIEW (tree_view)); + + if (signature_list != NULL) + g_return_if_fail (E_IS_SIGNATURE_LIST (signature_list)); + + priv = E_SIGNATURE_TREE_VIEW_GET_PRIVATE (tree_view); + + if (priv->signature_list != NULL) { + g_signal_handlers_disconnect_by_func ( + priv->signature_list, + signature_tree_view_refresh_cb, tree_view); + 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_tree_view_refresh_cb), + tree_view); + g_signal_connect ( + priv->signature_list, "signature-changed", + G_CALLBACK (signature_tree_view_refresh_cb), + tree_view); + g_signal_connect ( + priv->signature_list, "signature-removed", + G_CALLBACK (signature_tree_view_refresh_cb), + tree_view); + } + + signature_tree_view_refresh_cb (signature_list, NULL, tree_view); + + g_object_notify (G_OBJECT (tree_view), "signature-list"); +} + +ESignature * +e_signature_tree_view_get_selected (ESignatureTreeView *tree_view) +{ + ESignature *signature; + GtkTreeSelection *selection; + GtkTreeModel *model; + GtkTreeIter iter; + + g_return_val_if_fail (E_IS_SIGNATURE_TREE_VIEW (tree_view), NULL); + + selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view)); + if (!gtk_tree_selection_get_selected (selection, &model, &iter)) + return NULL; + + gtk_tree_model_get (model, &iter, COLUMN_SIGNATURE, &signature, -1); + + return signature; +} + +gboolean +e_signature_tree_view_set_selected (ESignatureTreeView *tree_view, + ESignature *signature) +{ + GtkTreeRowReference *reference; + GtkTreeSelection *selection; + GtkTreePath *path; + + g_return_val_if_fail (E_IS_SIGNATURE_TREE_VIEW (tree_view), FALSE); + + if (signature != NULL) + g_return_val_if_fail (E_IS_SIGNATURE (signature), FALSE); + + selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view)); + + /* NULL means clear the selection. */ + if (signature == NULL) { + gtk_tree_selection_unselect_all (selection); + return TRUE; + } + + /* Lookup the tree row reference for the signature. */ + reference = g_hash_table_lookup (tree_view->priv->index, signature); + if (reference == NULL) + return FALSE; + + /* Select the referenced path. */ + path = gtk_tree_row_reference_get_path (reference); + gtk_tree_selection_select_path (selection, path); + gtk_tree_path_free (path); + + g_object_notify (G_OBJECT (tree_view), "selected"); + + return TRUE; +} |