[evolution] Add EAuthComboBox widget.

[Matthew Barnes <mbarnes src gnome org>]

commit b74ff36f79718fd563fb5b55b4ee269fc7117970
Author: Matthew Barnes <mbarnes redhat com>
Date:   Thu Nov 3 12:48:47 2011 -0400

    Add EAuthComboBox widget.
    
    To be used in the Account Editor to list authentication mechanisms.

 maint/evolution.xml             |    3 +
 widgets/misc/Makefile.am        |    2 +
 widgets/misc/e-auth-combo-box.c |  259 +++++++++++++++++++++++++++++++++++++++
 widgets/misc/e-auth-combo-box.h |   71 +++++++++++
 4 files changed, 335 insertions(+), 0 deletions(-)
---
diff --git a/maint/evolution.xml b/maint/evolution.xml
index c072734..bc9340c 100644
--- a/maint/evolution.xml
+++ b/maint/evolution.xml
@@ -2,6 +2,8 @@
 
   <glade-widget-classes>
 
+    <glade-widget-class name="EAuthComboBox" generic-name="auth-combo-box" title="Authentication Combo Box" get-type-function="e_auth_combo_box_get_type"/>
+
     <glade-widget-class name="EDateEdit" generic-name="date-edit" title="Date Edit">
       <property id="allow-no-date-set"/>
       <property id="set-none"/>
@@ -39,6 +41,7 @@
   </glade-widget-classes>
 
   <glade-widget-group name="evolution-widgets" title="Evolution">
+    <glade-widget-class-ref name="EAuthComboBox"/>
     <glade-widget-class-ref name="EDateEdit"/>
     <glade-widget-class-ref name="EImageChooser"/>
     <glade-widget-class-ref name="EMailJunkOptions"/>
diff --git a/widgets/misc/Makefile.am b/widgets/misc/Makefile.am
index 79bc14b..5235c1c 100644
--- a/widgets/misc/Makefile.am
+++ b/widgets/misc/Makefile.am
@@ -23,6 +23,7 @@ widgetsinclude_HEADERS =			\
 	e-attachment-store.h			\
 	e-attachment-tree-view.h		\
 	e-attachment-view.h			\
+	e-auth-combo-box.h			\
 	e-buffer-tagger.h			\
 	e-calendar.h				\
 	e-calendar-item.h			\
@@ -107,6 +108,7 @@ libemiscwidgets_la_SOURCES =			\
 	e-attachment-store.c			\
 	e-attachment-tree-view.c		\
 	e-attachment-view.c			\
+	e-auth-combo-box.c			\
 	e-buffer-tagger.c			\
 	e-calendar.c				\
 	e-calendar-item.c			\
diff --git a/widgets/misc/e-auth-combo-box.c b/widgets/misc/e-auth-combo-box.c
new file mode 100644
index 0000000..48bd15c
--- /dev/null
+++ b/widgets/misc/e-auth-combo-box.c
@@ -0,0 +1,259 @@
+/*
+ * e-auth-combo-box.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/>
+ *
+ */
+
+#include "e-auth-combo-box.h"
+
+#define E_AUTH_COMBO_BOX_GET_PRIVATE(obj) \
+	(G_TYPE_INSTANCE_GET_PRIVATE \
+	((obj), E_TYPE_AUTH_COMBO_BOX, EAuthComboBoxPrivate))
+
+struct _EAuthComboBoxPrivate {
+	CamelProvider *provider;
+};
+
+enum {
+	PROP_0,
+	PROP_PROVIDER
+};
+
+enum {
+	COLUMN_MECHANISM,
+	COLUMN_DISPLAY_NAME,
+	COLUMN_STRIKETHROUGH,
+	COLUMN_AUTHTYPE,
+	NUM_COLUMNS
+};
+
+G_DEFINE_TYPE (
+	EAuthComboBox,
+	e_auth_combo_box,
+	GTK_TYPE_COMBO_BOX)
+
+static void
+auth_combo_box_rebuild_model (EAuthComboBox *combo_box)
+{
+	GtkComboBox *gtk_combo_box;
+	CamelProvider *provider;
+	GtkTreeModel *model;
+	GList *link;
+	const gchar *active_id;
+
+	provider = e_auth_combo_box_get_provider (combo_box);
+
+	gtk_combo_box = GTK_COMBO_BOX (combo_box);
+	model = gtk_combo_box_get_model (gtk_combo_box);
+	active_id = gtk_combo_box_get_active_id (gtk_combo_box);
+
+	gtk_list_store_clear (GTK_LIST_STORE (model));
+
+	if (provider == NULL)
+		return;
+
+	for (link = provider->authtypes; link != NULL; link = link->next) {
+		CamelServiceAuthType *authtype = link->data;
+		GtkTreeIter iter;
+
+		gtk_list_store_append (GTK_LIST_STORE (model), &iter);
+
+		gtk_list_store_set (
+			GTK_LIST_STORE (model), &iter,
+			COLUMN_MECHANISM, authtype->authproto,
+			COLUMN_DISPLAY_NAME, authtype->name,
+			COLUMN_AUTHTYPE, authtype,
+			-1);
+	}
+
+	/* Try selecting the previous mechanism. */
+	gtk_combo_box_set_active_id (gtk_combo_box, active_id);
+
+	/* Or else fall back to the first mechanism. */
+	if (gtk_combo_box_get_active_id (gtk_combo_box) == NULL)
+		gtk_combo_box_set_active (gtk_combo_box, 0);
+}
+
+static void
+auth_combo_box_set_property (GObject *object,
+                             guint property_id,
+                             const GValue *value,
+                             GParamSpec *pspec)
+{
+	switch (property_id) {
+		case PROP_PROVIDER:
+			e_auth_combo_box_set_provider (
+				E_AUTH_COMBO_BOX (object),
+				g_value_get_pointer (value));
+			return;
+	}
+
+	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+}
+
+static void
+auth_combo_box_get_property (GObject *object,
+                             guint property_id,
+                             GValue *value,
+                             GParamSpec *pspec)
+{
+	switch (property_id) {
+		case PROP_PROVIDER:
+			g_value_set_pointer (
+				value,
+				e_auth_combo_box_get_provider (
+				E_AUTH_COMBO_BOX (object)));
+			return;
+	}
+
+	G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
+}
+
+static void
+auth_combo_box_constructed (GObject *object)
+{
+	GtkComboBox *combo_box;
+	GtkListStore *list_store;
+	GtkCellLayout *cell_layout;
+	GtkCellRenderer *cell_renderer;
+
+	/* Chain up to parent's constructed() method. */
+	G_OBJECT_CLASS (e_auth_combo_box_parent_class)->constructed (object);
+
+	list_store = gtk_list_store_new (
+		NUM_COLUMNS,
+		G_TYPE_STRING,		/* COLUMN_MECHANISM */
+		G_TYPE_STRING,		/* COLUMN_DISPLAY_NAME */
+		G_TYPE_BOOLEAN,		/* COLUMN_STRIKETHROUGH */
+		G_TYPE_POINTER);	/* COLUMN_AUTHTYPE */
+
+	combo_box = GTK_COMBO_BOX (object);
+	gtk_combo_box_set_model (combo_box, GTK_TREE_MODEL (list_store));
+	gtk_combo_box_set_id_column (combo_box, COLUMN_MECHANISM);
+	g_object_unref (list_store);
+
+	cell_layout = GTK_CELL_LAYOUT (object);
+	cell_renderer = gtk_cell_renderer_text_new ();
+	gtk_cell_layout_pack_start (cell_layout, cell_renderer, TRUE);
+
+	gtk_cell_layout_set_attributes (
+		cell_layout, cell_renderer,
+		"text", COLUMN_DISPLAY_NAME,
+		"strikethrough", COLUMN_STRIKETHROUGH,
+		NULL);
+}
+
+static void
+e_auth_combo_box_class_init (EAuthComboBoxClass *class)
+{
+	GObjectClass *object_class;
+
+	g_type_class_add_private (class, sizeof (EAuthComboBoxPrivate));
+
+	object_class = G_OBJECT_CLASS (class);
+	object_class->set_property = auth_combo_box_set_property;
+	object_class->get_property = auth_combo_box_get_property;
+	object_class->constructed = auth_combo_box_constructed;
+
+	g_object_class_install_property (
+		object_class,
+		PROP_PROVIDER,
+		g_param_spec_pointer (
+			"provider",
+			"Provider",
+			"The provider to query for auth mechanisms",
+			G_PARAM_READWRITE |
+			G_PARAM_STATIC_STRINGS));
+}
+
+static void
+e_auth_combo_box_init (EAuthComboBox *combo_box)
+{
+	combo_box->priv = E_AUTH_COMBO_BOX_GET_PRIVATE (combo_box);
+}
+
+CamelProvider *
+e_auth_combo_box_get_provider (EAuthComboBox *combo_box)
+{
+	g_return_val_if_fail (E_IS_AUTH_COMBO_BOX (combo_box), NULL);
+
+	return combo_box->priv->provider;
+}
+
+void
+e_auth_combo_box_set_provider (EAuthComboBox *combo_box,
+                               CamelProvider *provider)
+{
+	g_return_if_fail (E_IS_AUTH_COMBO_BOX (combo_box));
+
+	if (provider == combo_box->priv->provider)
+		return;
+
+	combo_box->priv->provider = provider;
+
+	g_object_notify (G_OBJECT (combo_box), "provider");
+
+	auth_combo_box_rebuild_model (combo_box);
+}
+
+void
+e_auth_combo_box_update_available (EAuthComboBox *combo_box,
+                                   GList *available_authtypes)
+{
+	GtkComboBox *gtk_combo_box;
+	GtkTreeModel *model;
+	GtkTreeIter iter;
+	gint active_index;
+	gint available_index = -1;
+	gint index = 0;
+	gboolean iter_set;
+
+	g_return_if_fail (E_IS_AUTH_COMBO_BOX (combo_box));
+
+	gtk_combo_box = GTK_COMBO_BOX (combo_box);
+	model = gtk_combo_box_get_model (gtk_combo_box);
+	active_index = gtk_combo_box_get_active (gtk_combo_box);
+
+	iter_set = gtk_tree_model_get_iter_first (model, &iter);
+
+	while (iter_set) {
+		CamelServiceAuthType *authtype;
+		gboolean available;
+
+		gtk_tree_model_get (
+			model, &iter, COLUMN_AUTHTYPE, &authtype, -1);
+
+		available = (g_list_find (
+			available_authtypes, authtype) != NULL);
+
+		gtk_list_store_set (
+			GTK_LIST_STORE (model), &iter,
+			COLUMN_STRIKETHROUGH, !available, -1);
+
+		if (index == active_index && !available)
+			active_index = -1;
+
+		if (available && available_index == -1)
+			available_index = index;
+
+		iter_set = gtk_tree_model_iter_next (model, &iter);
+		index++;
+	}
+
+	/* If the active combo_box item turned out to be unavailable
+	 * (or there was no active item), select the first available. */
+	if (active_index == -1 && available_index != -1)
+		gtk_combo_box_set_active (gtk_combo_box, available_index);
+}
diff --git a/widgets/misc/e-auth-combo-box.h b/widgets/misc/e-auth-combo-box.h
new file mode 100644
index 0000000..e449f1c
--- /dev/null
+++ b/widgets/misc/e-auth-combo-box.h
@@ -0,0 +1,71 @@
+/*
+ * e-auth-combo-box.h
+ *
+ * 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/>
+ *
+ */
+
+#ifndef E_AUTH_COMBO_BOX_H
+#define E_AUTH_COMBO_BOX_H
+
+#include <gtk/gtk.h>
+#include <camel/camel.h>
+
+/* Standard GObject macros */
+#define E_TYPE_AUTH_COMBO_BOX \
+	(e_auth_combo_box_get_type ())
+#define E_AUTH_COMBO_BOX(obj) \
+	(G_TYPE_CHECK_INSTANCE_CAST \
+	((obj), E_TYPE_AUTH_COMBO_BOX, EAuthComboBox))
+#define E_AUTH_COMBO_BOX_CLASS(cls) \
+	(G_TYPE_CHECK_CLASS_CAST \
+	((cls), E_TYPE_AUTH_COMBO_BOX, EAuthComboBoxClass))
+#define E_IS_AUTH_COMBO_BOX(obj) \
+	(G_TYPE_CHECK_INSTANCE_TYPE \
+	((obj), E_TYPE_AUTH_COMBO_BOX))
+#define E_IS_AUTH_COMBO_BOX_CLASS(cls) \
+	(G_TYPE_CHECK_CLASS_TYPE \
+	((cls), E_TYPE_AUTH_COMBO_BOX))
+#define E_AUTH_COMBO_BOX_GET_CLASS(obj) \
+	(G_TYPE_INSTANCE_GET_CLASS \
+	((obj), E_TYPE_AUTH_COMBO_BOX, EAuthComboBoxClass))
+
+G_BEGIN_DECLS
+
+typedef struct _EAuthComboBox EAuthComboBox;
+typedef struct _EAuthComboBoxClass EAuthComboBoxClass;
+typedef struct _EAuthComboBoxPrivate EAuthComboBoxPrivate;
+
+struct _EAuthComboBox {
+	GtkComboBox parent;
+	EAuthComboBoxPrivate *priv;
+};
+
+struct _EAuthComboBoxClass {
+	GtkComboBoxClass parent_class;
+};
+
+GType		e_auth_combo_box_get_type	(void) G_GNUC_CONST;
+GtkWidget *	e_auth_combo_box_new		(void);
+CamelProvider *	e_auth_combo_box_get_provider	(EAuthComboBox *combo_box);
+void		e_auth_combo_box_set_provider	(EAuthComboBox *combo_box,
+						 CamelProvider *provider);
+void		e_auth_combo_box_update_available
+						(EAuthComboBox *combo_box,
+						 GList *available_authtypes);
+
+G_END_DECLS
+
+#endif /* E_AUTH_COMBO_BOX_H */
+