add our selection_change signal. (e_minicard_view_widget_realize): connect

2001-05-17  Chris Toshok  <toshok@ximian.com>

	* gui/widgets/e-minicard-view-widget.c
	(e_minicard_view_widget_class_init): add our selection_change
	signal.
	(e_minicard_view_widget_realize): connect to the ESelectionModel's
	selection_changed signal.
	(e_minicard_view_widget_selected_count): new function.
	(selection_change): new function - emit our "selection_change"
	signal.

	* gui/widgets/e-minicard-view-widget.h (struct
	_EMinicardViewWidgetClass): add selection_change signal.  also,
	add prototype for e_minicard_view_widget_selected_count.  *
	gui/widgets/e-addressbook-view.c

	(e_addressbook_view_class_init): add our command_state_change
	signal.
	(e_addressbook_view_init): connect to the writable_status signal
	on the EAddressbookModel.
	(minicard_selection_change): new function - calls
	command_state_change.
	(create_minicard_view): connect to selection_change on the
	minicard_view so we know when to update command state.
	(table_selection_change): new function - calls
	command_state_change.
	(writable_status): new function - calls command_state_change.
	(command_state_change): new function - emits our
	"command_state_change" signal.
	(create_table_view): connect to the selection_change signal so we
	know to update the command state.
	(change_view_type): update the command state every time we change
	view types.
	(e_addressbook_view_can_create): new function.
	(e_addressbook_view_can_print): new function.
	(e_addressbook_view_can_delete): new function.
	(e_addressbook_view_can_stop): new function.

	* gui/widgets/e-addressbook-view.h (struct
	_EAddressbookViewClass): add command_state_change signal, and
	prototypes of functions the component can use to test the state of
	commands.

	* gui/widgets/e-addressbook-model.c (addressbook_destroy): unlink
	the writable_status signal on the EBook.
	(writable_status): new function.
	(e_addressbook_model_class_init): add our writable_status signal.
	(e_addressbook_model_init): init writable_status_id.
	(e_addressbook_model_set_arg): unlink the writable_status signal
	on the old EBook, and connect it on the new one.

	* gui/widgets/e-addressbook-model.h: add writable_status signal.

	* gui/component/addressbook.c (update_command_state): new
	function, set the sensitivity of the bonobo commands.
	(control_activate): update our command state immediately upon
	activating the control.
	(addressbook_factory_new_control): register command_state_change
	to update the commands.

svn path=/trunk/; revision=9874

6 files changed, 186 insertions, 8 deletions

diff --git a/addressbook/gui/widgets/e-addressbook-model.c b/addressbook/gui/widgets/e-addressbook-model.c
index 60da28f6be..fbc67d6ed6 100644
--- a/addressbook/gui/widgets/e-addressbook-model.c
+++ b/addressbook/gui/widgets/e-addressbook-model.c
@@ -33,6 +33,7 @@ enum {
 };
 
 enum {
+	WRITABLE_STATUS,
 	STATUS_MESSAGE,
 	CARD_ADDED,
 	CARD_REMOVED,
@@ -83,8 +84,15 @@ addressbook_destroy(GtkObject *object)
 
 	remove_book_view(model);
 
-	if (model->book)
+	if (model->book) {
+		if (model->writable_status_id)
+			gtk_signal_disconnect(GTK_OBJECT (model->book),
+					      model->writable_status_id);
+
+		model->writable_status_id = 0;
+
 		gtk_object_unref(GTK_OBJECT(model->book));
+	}
 
 	for ( i = 0; i < model->data_count; i++ ) {
 		gtk_object_unref(GTK_OBJECT(model->data[i]));
@@ -166,6 +174,18 @@ status_message (EBookView *book_view,
 }
 
 static void
+writable_status (EBook *book,
+		 gboolean writable,
+		 EAddressbookModel *model)
+{
+	model->editable = writable;
+
+	gtk_signal_emit (GTK_OBJECT (model),
+			 e_addressbook_model_signals [WRITABLE_STATUS],
+			 writable);
+}
+
+static void
 e_addressbook_model_class_init (GtkObjectClass *object_class)
 {
 	parent_class = gtk_type_class (PARENT_TYPE);
@@ -181,6 +201,14 @@ e_addressbook_model_class_init (GtkObjectClass *object_class)
 	gtk_object_add_arg_type ("EAddressbookModel::editable", GTK_TYPE_BOOL,
 				 GTK_ARG_READWRITE, ARG_EDITABLE);
 
+	e_addressbook_model_signals [WRITABLE_STATUS] =
+		gtk_signal_new ("writable_status",
+				GTK_RUN_LAST,
+				object_class->type,
+				GTK_SIGNAL_OFFSET (EAddressbookModelClass, writable_status),
+				gtk_marshal_NONE__BOOL,
+				GTK_TYPE_NONE, 1, GTK_TYPE_BOOL);
+
 	e_addressbook_model_signals [STATUS_MESSAGE] =
 		gtk_signal_new ("status_message",
 				GTK_RUN_LAST,
@@ -236,6 +264,7 @@ e_addressbook_model_init (GtkObject *object)
 	model->remove_card_id = 0;
 	model->modify_card_id = 0;
 	model->status_message_id = 0;
+	model->writable_status_id = 0;
 	model->data = NULL;
 	model->data_count = 0;
 	model->allocated_count = 0;
@@ -323,13 +352,23 @@ e_addressbook_model_set_arg (GtkObject *o, GtkArg *arg, guint arg_id)
 	
 	switch (arg_id){
 	case ARG_BOOK:
-		if (model->book)
+		if (model->book) {
+			if (model->writable_status_id)
+				gtk_signal_disconnect(GTK_OBJECT (model->book),
+						      model->writable_status_id);
+
+			model->writable_status_id = 0;
+
 			gtk_object_unref(GTK_OBJECT(model->book));
+		}
 		model->book = E_BOOK(GTK_VALUE_OBJECT (*arg));
 		if (model->book) {
 			gtk_object_ref(GTK_OBJECT(model->book));
 			if (model->get_view_idle == 0)
 				model->get_view_idle = g_idle_add((GSourceFunc)get_view, model);
+			gtk_signal_connect (GTK_OBJECT(model->book),
+					    "writable_status",
+					    writable_status, model);
 		}
 		break;
 	case ARG_QUERY:
diff --git a/addressbook/gui/widgets/e-addressbook-model.h b/addressbook/gui/widgets/e-addressbook-model.h
index f8fd01b535..5443e2dbfb 100644
--- a/addressbook/gui/widgets/e-addressbook-model.h
+++ b/addressbook/gui/widgets/e-addressbook-model.h
@@ -29,7 +29,7 @@ struct _EAddressbookModel {
 	int data_count;
 	int allocated_count;
 
-	int create_card_id, remove_card_id, modify_card_id, status_message_id;
+	int create_card_id, remove_card_id, modify_card_id, status_message_id, writable_status_id;
 
 	guint editable : 1;
 	guint first_get_view : 1;
@@ -42,11 +42,12 @@ struct _EAddressbookModelClass {
 	/*
 	 * Signals
 	 */
-	void (*status_message) (EAddressbookModel *model, const gchar *message);
-	void (*card_added)     (EAddressbookModel *model, gint index, gint count);
-	void (*card_removed)   (EAddressbookModel *model, gint index);
-	void (*card_changed)   (EAddressbookModel *model, gint index);
-	void (*model_changed)  (EAddressbookModel *model);
+	void (*writable_status) (EAddressbookModel *model, gboolean writable);
+	void (*status_message)  (EAddressbookModel *model, const gchar *message);
+	void (*card_added)      (EAddressbookModel *model, gint index, gint count);
+	void (*card_removed)    (EAddressbookModel *model, gint index);
+	void (*card_changed)    (EAddressbookModel *model, gint index);
+	void (*model_changed)   (EAddressbookModel *model);
 };
 
 
diff --git a/addressbook/gui/widgets/e-addressbook-view.c b/addressbook/gui/widgets/e-addressbook-view.c
index 352d1b4b62..2cc1acd7e4 100644
--- a/addressbook/gui/widgets/e-addressbook-view.c
+++ b/addressbook/gui/widgets/e-addressbook-view.c
@@ -62,6 +62,8 @@ static void e_addressbook_view_destroy (GtkObject *object);
 static void change_view_type (EAddressbookView *view, EAddressbookViewType view_type);
 
 static void status_message (GtkObject *object, const gchar *status, EAddressbookView *eav);
+static void writable_status (GtkObject *object, gboolean writable, EAddressbookView *eav);
+static void command_state_change (EAddressbookView *eav);
 
 static GtkTableClass *parent_class = NULL;
 
@@ -75,6 +77,7 @@ enum {
 
 enum {
 	STATUS_MESSAGE,
+	COMMAND_STATE_CHANGE,
 	LAST_SIGNAL
 };
 
@@ -141,6 +144,14 @@ e_addressbook_view_class_init (EAddressbookViewClass *klass)
 				gtk_marshal_NONE__POINTER,
 				GTK_TYPE_NONE, 1, GTK_TYPE_POINTER);
 
+	e_addressbook_view_signals [COMMAND_STATE_CHANGE] =
+		gtk_signal_new ("command_state_change",
+				GTK_RUN_LAST,
+				object_class->type,
+				GTK_SIGNAL_OFFSET (EAddressbookViewClass, command_state_change),
+				gtk_marshal_NONE__NONE,
+				GTK_TYPE_NONE, 0);
+
 	gtk_object_class_add_signals (object_class, e_addressbook_view_signals, LAST_SIGNAL);
 }
 
@@ -156,6 +167,11 @@ e_addressbook_view_init (EAddressbookView *eav)
 			    GTK_SIGNAL_FUNC (status_message),
 			    eav);
 
+	gtk_signal_connect (GTK_OBJECT(eav->model),
+			    "writable_status",
+			    GTK_SIGNAL_FUNC (writable_status),
+			    eav);
+
 	eav->editable = FALSE;
 	eav->book = NULL;
 	eav->query = g_strdup("(contains \"x-evolution-any-field\" \"\")");
@@ -321,6 +337,12 @@ create_alphabet (EAddressbookView *view)
 }
 
 static void
+minicard_selection_change (EMinicardViewWidget *widget, EAddressbookView *view)
+{
+	command_state_change (view);
+}
+
+static void
 create_minicard_view (EAddressbookView *view)
 {
 	GtkWidget *scrollframe;
@@ -337,6 +359,10 @@ create_minicard_view (EAddressbookView *view)
 	adapter = E_ADDRESSBOOK_REFLOW_ADAPTER(e_addressbook_reflow_adapter_new (view->model));
 	minicard_view = e_minicard_view_widget_new(adapter);
 
+	gtk_signal_connect(GTK_OBJECT(minicard_view), "selection_change",
+			   GTK_SIGNAL_FUNC(minicard_selection_change), view);
+
+
 	view->object = GTK_OBJECT(minicard_view);
 	view->widget = minicard_hbox;
 
@@ -609,6 +635,12 @@ table_right_click(ETableScrolled *table, gint row, gint col, GdkEvent *event, EA
 }
 
 static void
+table_selection_change(ETableScrolled *table, EAddressbookView *view)
+{
+	command_state_change (view);
+}
+
+static void
 table_drag_data_get (ETable             *table,
 		     int                 row,
 		     int                 col,
@@ -648,6 +680,19 @@ status_message (GtkObject *object, const gchar *status, EAddressbookView *eav)
 			 status);
 }
 
+static void
+writable_status (GtkObject *object, gboolean writable, EAddressbookView *eav)
+{
+	command_state_change (eav);
+}
+
+static void
+command_state_change (EAddressbookView *eav)
+{
+	gtk_signal_emit (GTK_OBJECT (eav),
+			 e_addressbook_view_signals [COMMAND_STATE_CHANGE]);
+}
+
 #ifdef JUST_FOR_TRANSLATORS
 static char *list [] = {
 	N_("* Click here to add a contact *"),
@@ -769,6 +814,8 @@ create_table_view (EAddressbookView *view)
 			   GTK_SIGNAL_FUNC(table_double_click), view);
 	gtk_signal_connect(GTK_OBJECT(e_table_scrolled_get_table(E_TABLE_SCROLLED(table))), "right_click",
 			   GTK_SIGNAL_FUNC(table_right_click), view);
+	gtk_signal_connect(GTK_OBJECT(e_table_scrolled_get_table(E_TABLE_SCROLLED(table))), "selection_change",
+			   GTK_SIGNAL_FUNC(table_selection_change), view);
 
 	/* drag & drop signals */
 	e_table_drag_source_set (E_TABLE(E_TABLE_SCROLLED(table)->table), GDK_BUTTON1_MASK,
@@ -816,6 +863,8 @@ change_view_type (EAddressbookView *view, EAddressbookViewType view_type)
 	}
 
 	view->view_type = view_type;
+
+	command_state_change (view);
 }
 
 static void
@@ -1009,3 +1058,45 @@ e_addressbook_view_stop(EAddressbookView *view)
 {
 	e_addressbook_model_stop (view->model);
 }
+
+gboolean
+e_addressbook_view_can_create (EAddressbookView  *view)
+{
+	return e_addressbook_model_editable (view->model);
+}
+
+gboolean
+e_addressbook_view_can_print (EAddressbookView  *view)
+{
+	switch (view->view_type) {
+	case E_ADDRESSBOOK_VIEW_TABLE:
+		return e_table_selected_count (E_TABLE_SCROLLED(view->widget)->table) != 0;
+	case E_ADDRESSBOOK_VIEW_MINICARD:
+		return e_minicard_view_widget_selected_count (E_MINICARD_VIEW_WIDGET (view->object)) != 0;
+	default:
+		return FALSE;
+	}
+}
+
+gboolean
+e_addressbook_view_can_delete (EAddressbookView  *view)
+{
+	if (!e_addressbook_model_editable (view->model))
+		return FALSE;
+
+	switch (view->view_type) {
+	case E_ADDRESSBOOK_VIEW_TABLE:
+		return e_table_selected_count (E_TABLE_SCROLLED(view->widget)->table) != 0;
+	case E_ADDRESSBOOK_VIEW_MINICARD:
+		return e_minicard_view_widget_selected_count (E_MINICARD_VIEW_WIDGET (view->object)) != 0;
+	default:
+		return FALSE;
+	}
+}
+
+gboolean
+e_addressbook_view_can_stop (EAddressbookView  *view)
+{
+	return FALSE;
+}
+
diff --git a/addressbook/gui/widgets/e-addressbook-view.h b/addressbook/gui/widgets/e-addressbook-view.h
index 30633c57fe..19c83474fe 100644
--- a/addressbook/gui/widgets/e-addressbook-view.h
+++ b/addressbook/gui/widgets/e-addressbook-view.h
@@ -82,6 +82,7 @@ struct _EAddressbookViewClass
 	 * Signals
 	 */
 	void (*status_message) (EAddressbookView *view, const gchar *message);
+	void (*command_state_change) (EAddressbookView *view);
 };
 
 GtkWidget *e_addressbook_view_new               (void);
@@ -95,6 +96,11 @@ void       e_addressbook_view_delete_selection  (EAddressbookView  *view);
 void       e_addressbook_view_show_all          (EAddressbookView  *view);
 void       e_addressbook_view_stop              (EAddressbookView  *view);
 
+gboolean   e_addressbook_view_can_create        (EAddressbookView  *view);
+gboolean   e_addressbook_view_can_print         (EAddressbookView  *view);
+gboolean   e_addressbook_view_can_delete        (EAddressbookView  *view);
+gboolean   e_addressbook_view_can_stop          (EAddressbookView  *view);
+
 #ifdef __cplusplus
 }
 #endif /* __cplusplus */
diff --git a/addressbook/gui/widgets/e-minicard-view-widget.c b/addressbook/gui/widgets/e-minicard-view-widget.c
index 8944f2118c..576f8b3aab 100644
--- a/addressbook/gui/widgets/e-minicard-view-widget.c
+++ b/addressbook/gui/widgets/e-minicard-view-widget.c
@@ -37,6 +37,8 @@ static void e_minicard_view_widget_reflow        (ECanvas *canvas);
 static void e_minicard_view_widget_size_allocate (GtkWidget *widget, GtkAllocation *allocation);
 static void e_minicard_view_widget_realize       (GtkWidget *widget);
 
+static void selection_change                     (ESelectionModel *esm, EMinicardViewWidget *widget);
+
 static ECanvasClass *parent_class = NULL;
 
 /* The arguments we take */
@@ -47,6 +49,13 @@ enum {
 	ARG_EDITABLE
 };
 
+enum {
+	SELECTION_CHANGE,
+	LAST_SIGNAL
+};
+
+static guint e_minicard_view_widget_signals [LAST_SIGNAL] = {0, };
+
 GtkType
 e_minicard_view_widget_get_type (void)
 {
@@ -92,6 +101,16 @@ e_minicard_view_widget_class_init (EMinicardViewWidgetClass *klass)
 	gtk_object_add_arg_type ("EMinicardViewWidget::editable", GTK_TYPE_BOOL,
 				 GTK_ARG_READWRITE, ARG_EDITABLE);
 
+	e_minicard_view_widget_signals [SELECTION_CHANGE] =
+		gtk_signal_new ("selection_change",
+				GTK_RUN_LAST,
+				object_class->type,
+				GTK_SIGNAL_OFFSET (EMinicardViewWidgetClass, selection_change),
+				gtk_marshal_NONE__NONE,
+				GTK_TYPE_NONE, 0);
+
+	gtk_object_class_add_signals (object_class, e_minicard_view_widget_signals, LAST_SIGNAL);
+
 	object_class->set_arg       = e_minicard_view_widget_set_arg;
 	object_class->get_arg       = e_minicard_view_widget_get_arg;
 	object_class->destroy       = e_minicard_view_widget_destroy;
@@ -223,6 +242,10 @@ e_minicard_view_widget_realize (GtkWidget *widget)
 		       "adapter", view->adapter,
 		       NULL);
 
+	gtk_signal_connect (GTK_OBJECT (E_REFLOW(view->emv)->selection),
+			    "selection_changed",
+			    selection_change, view);
+
 	if (GTK_WIDGET_CLASS(parent_class)->realize)
 		GTK_WIDGET_CLASS(parent_class)->realize (widget);
 }
@@ -275,6 +298,22 @@ e_minicard_view_widget_reflow(ECanvas *canvas)
 			       NULL );	
 }
 
+static void
+selection_change (ESelectionModel *esm, EMinicardViewWidget *widget)
+{
+	gtk_signal_emit (GTK_OBJECT(widget),
+			 e_minicard_view_widget_signals [SELECTION_CHANGE], widget);
+}
+
+gint
+e_minicard_view_widget_selected_count   (EMinicardViewWidget *view)
+{
+	if (!view->emv)
+		return 0;
+	else
+		return e_selection_model_selected_count (E_REFLOW (view->emv)->selection);
+}
+
 void
 e_minicard_view_widget_remove_selection(EMinicardViewWidget *view,
 					EBookCallback  cb,
diff --git a/addressbook/gui/widgets/e-minicard-view-widget.h b/addressbook/gui/widgets/e-minicard-view-widget.h
index db37d1631a..22156e2588 100644
--- a/addressbook/gui/widgets/e-minicard-view-widget.h
+++ b/addressbook/gui/widgets/e-minicard-view-widget.h
@@ -57,9 +57,11 @@ struct _EMinicardViewWidget
 struct _EMinicardViewWidgetClass
 {
 	ECanvasClass parent_class;
+	void         (*selection_change) (EMinicardViewWidget*);
 };
 
 GtkType    e_minicard_view_widget_get_type (void);
+gint       e_minicard_view_widget_selected_count   (EMinicardViewWidget *view);
 void       e_minicard_view_widget_remove_selection (EMinicardViewWidget *view,
 						    EBookCallback  cb,
 						    gpointer       closure);