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-rw-r--r--widgets/misc/e-signature-tree-view.c445
1 files changed, 445 insertions, 0 deletions
diff --git a/widgets/misc/e-signature-tree-view.c b/widgets/misc/e-signature-tree-view.c
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index 0000000000..b2cc9d6f66
--- /dev/null
+++ b/widgets/misc/e-signature-tree-view.c
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+/*
+ * 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;
+
+ signature = iter->data;
+
+ /* Skip autogenerated signatures. */
+ if (signature->autogen)
+ continue;
+
+ gtk_list_store_append (store, &tree_iter);
+ gtk_list_store_set (
+ store, &tree_iter,
+ COLUMN_STRING, signature->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;
+}