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Re: [Evolution-hackers] Status bar


this seems to be the latest version of this you sent out so i'll review as is, mostly just minor, anal, stylistic things.


On Fri, 2003-12-05 at 12:57 +0100, ERDI Gergo wrote: 
Hi,

> I think you should call it 'on-url', its really only proxying the
> gtkhtml event anyway.

OK I changed its name, but it's not just a proxy since the signature
changes from void () (const char*) to void () (const char*, const char*)


> Actually i dont understand why you are exporting this signal anyway?
> 
> You have two places the status is set, one from the signal callback in
> em-folder-view via the <status> tag, and the other from the callback
> in mail-component via activity client status.

I thought I already explained it.
The problem is that there are two competing ways to set the statusbar, and
parts of Evolution use both.
THe main shell uses its own Evolution::Component interface, thus when the
mail component is embedded in the main window, it has to use this.
On the other hand, Bonobo proper uses the Bonobo::UI interface. This is
the interface used when you double-click a mail message and it is opened
in a separate window.

> as i've statued beofre, i dont understand this logic.  why not set it
> to "" intsead of NULL, so you don't have to do this messy stuff?

like I said, look at the implementation of bonobo_ui_component_set_status:

        if (text == NULL ||
            text [0] == '\0') {
                /*
                 * FIXME: Remove what was there to reveal other msgs
                 * NB. if we're using the same UI component as the view
                 * was merged in with, this will result in us loosing our
                 * status bar altogether - sub-optimal.
                 */
                bonobo_ui_component_rm (component, "/status/main", opt_ev);

so that's why. I realise that there has been some problems in the minor
details in the patch (I haven't done any straight-C GTK+ hacking since
ages), but please assume that I know what I'm doing :)

Index: mail/ChangeLog
===================================================================
RCS file: /cvs/gnome/evolution/mail/ChangeLog,v
retrieving revision 1.2930
diff -u -r1.2930 ChangeLog
--- mail/ChangeLog	3 Dec 2003 19:24:34 -0000	1.2930
+++ mail/ChangeLog	5 Dec 2003 11:54:51 -0000
@@ -1,3 +1,19 @@
+2003-12-04  ERDI Gergo  <cactus cactus rulez org>
+
+	* em-folder-view.c (emfv_on_url_cb): Emit a hover-url signal when
+	the user mouses over a URL, ...
+	(emfv_hover_url_impl): ... and use BonoboUI to change the status
+	bar message...
+	(em_folder_view_set_statusbar): ... unless we are asked not to, ...
+
+	* mail-component.c (impl_createControls): ... like in the case of
+	the mail component, ...
+	(view_hover_url_cb): ... that uses the ActivityHandler to do the
+	same
+
+	Add these together, and #127536 is neatly solved.
+
+
 2003-12-03  Jeffrey Stedfast  <fejj ximian com>
 
 	* em-folder-view.c (emfv_set_folder): Sync the folder before
Index: mail/em-folder-view.c
===================================================================
RCS file: /cvs/gnome/evolution/mail/em-folder-view.c,v
retrieving revision 1.17
diff -u -r1.17 em-folder-view.c
--- mail/em-folder-view.c	3 Dec 2003 19:24:43 -0000	1.17
+++ mail/em-folder-view.c	5 Dec 2003 11:54:55 -0000
@@ -65,6 +65,7 @@
 #include "em-message-browser.h"
 #include "message-list.h"
 #include "em-utils.h"
+#include "em-marshal.h"
 
 #include <gtkhtml/gtkhtml.h>
 #include <gtkhtml/htmlobject.h>
@@ -102,6 +103,9 @@
 
 static void emfv_setting_setup(EMFolderView *emfv);
 
+static void emfv_on_url_cb(GObject *emitter, const char *url, EMFolderView *emfv);
+static void emfv_on_url(EMFolderView *emfv, const char *uri, const char *nice_uri);
+
 static const EMFolderViewEnable emfv_enable_map[];
 
 struct _EMFolderViewPrivate {
@@ -114,10 +118,19 @@
 
 	GtkWidget *invisible;
 	char *selection_uri;
+
+	gboolean do_statusbar;

call this statusbar_active and have it in the public object, as with preview_active.


 };
 
 static GtkVBoxClass *emfv_parent;
 
+enum {
+	ON_URL,
+	LAST_SIGNAL
+};
+
+static guint signals[LAST_SIGNAL] = { 0, };

no need for the assignment.  namespace the ON_URL thing too, e.g. EMFV_ON_URL.

+
 static void emfv_selection_get(GtkWidget *widget, GtkSelectionData *data, guint info, guint time_stamp, EMFolderView *emfv);
 static void emfv_selection_clear_event(GtkWidget *widget, GdkEventSelection *event, EMFolderView *emfv);
 
@@ -129,8 +142,10 @@
 
 	gtk_box_set_homogeneous (GTK_BOX (emfv), FALSE);
 
-	p = emfv->priv = g_malloc0(sizeof(struct _EMFolderViewPrivate));
+	p = emfv->priv = g_new0(struct _EMFolderViewPrivate, 1);

dont change this.

 
+	p->do_statusbar = TRUE;
+	
 	emfv->ui_files = g_slist_append(NULL, EVOLUTION_UIDIR "/evolution-mail-message.xml");
 	emfv->ui_app_name = "evolution-mail";
 
@@ -147,6 +162,7 @@
 	emfv->preview = (EMFormatHTMLDisplay *)em_format_html_display_new();
 	g_signal_connect(emfv->preview, "link_clicked", G_CALLBACK(emfv_format_link_clicked), emfv);
 	g_signal_connect(emfv->preview, "popup_event", G_CALLBACK(emfv_format_popup_event), emfv);
+	g_signal_connect (emfv->preview->formathtml.html, "on_url", G_CALLBACK (emfv_on_url_cb), emfv);

EMFormatHTMLDisplay should proxy on_url the way it does link_clicked, so you connect to it rather than the gtkhtml object directly. 
 
 	p->invisible = gtk_invisible_new();
 	g_object_ref(p->invisible);
@@ -228,6 +244,17 @@
 	((EMFolderViewClass *)klass)->set_folder_uri = emfv_set_folder_uri;
 	((EMFolderViewClass *)klass)->set_message = emfv_set_message;
 	((EMFolderViewClass *)klass)->activate = emfv_activate;
+
+	((EMFolderViewClass *)klass)->>
+
+	signals[ON_URL] = g_signal_new ("on-url",
+					G_OBJECT_CLASS_TYPE (klass),
+					G_SIGNAL_RUN_LAST,
+					G_STRUCT_OFFSET (EMFolderViewClass, on_url),
+					NULL, NULL,
+					em_marshal_VOID__STRING_STRING,
+					G_TYPE_NONE,
+					2, G_TYPE_STRING, G_TYPE_STRING);
 }
 
 GType
@@ -1547,6 +1574,8 @@
 		e_charset_picker_bonobo_ui_populate (uic, "/menu/View", _("Default"), emfv_charset_changed, emfv);
 
 		emfv_enable_menus(emfv);
+		if (emfv->priv->do_statusbar)
+			bonobo_ui_component_set_translate (uic, "/", "<status><item name=\"main\"/></status>", NULL);
 	} else {
 		const BonoboUIVerb *v;
 
@@ -1625,6 +1654,18 @@
 	return t;
 }
 
+void
+em_folder_view_set_statusbar (EMFolderView *emfv, gboolean statusbar)
+{
+	g_return_if_fail (emfv);
+	
+	emfv->priv->do_statusbar = statusbar;
+
+	if (statusbar && emfv->uic)
+		bonobo_ui_component_set_translate (emfv->uic, "/",
+						   "<status><item name=\"main\"/></status>", NULL);
+}
+
 /* ********************************************************************** */
 
 struct mst_t {
@@ -2016,3 +2057,34 @@
 								emfv, NULL, NULL);
 	g_object_unref(gconf);
 }
+
+static void
+emfv_on_url (EMFolderView *emfv, const char *uri, const char *nice_uri)
+{
+	if (emfv->priv->do_statusbar)
+	{
+		if (emfv->uic) {
+			bonobo_ui_component_set_status (emfv->uic, nice_uri, NULL);
+			/* Make sure the node keeps existing if nice_url == 0 */
+			if (!nice_uri)
+				bonobo_ui_component_set_translate (
+					emfv->uic, "/", "<status><item name=\"main\"/></status>", NULL);
+		}
+	}
+}
+
+static void
+emfv_on_url_cb (GObject *emitter, const char *url, EMFolderView *emfv)
+{
+	char *nice_url = 0;
+
+	if (url)
+		if (strncmp (url, "mailto:", 7) == 0)
+			nice_url = g_strdup_printf (_("Click to mail %s"), url + 7);
+		else
+			nice_url = g_strdup_printf (_("Click to open %s"), url);
+
+	g_signal_emit (emfv, signals[ON_URL], 0, url, nice_url);
+	
+	g_free (nice_url);
+}

not sure why you need to make the nice url here, but i guess it doesn't matter.

Index: mail/em-folder-view.h
===================================================================
RCS file: /cvs/gnome/evolution/mail/em-folder-view.h,v
retrieving revision 1.3
diff -u -r1.3 em-folder-view.h
--- mail/em-folder-view.h	19 Sep 2003 18:54:09 -0000	1.3
+++ mail/em-folder-view.h	5 Dec 2003 11:54:55 -0000
@@ -84,11 +84,14 @@
 	GtkVBoxClass parent_class;
 
 	/* if used as a control, used to activate/deactivate custom menu's */
-	void (*activate)(EMFolderView *, struct _BonoboUIComponent *uic, int state);
+	void (*activate)       (EMFolderView *, struct _BonoboUIComponent *uic, int state);
 
-	void (*set_folder_uri)(EMFolderView *emfv, const char *uri);
-	void (*set_folder)(EMFolderView *emfv, struct _CamelFolder *folder, const char *uri);
-	void (*set_message)(EMFolderView *emfv, const char *uid);
+	void (*set_folder_uri) (EMFolderView *emfv, const char *uri);
+	void (*set_folder)     (EMFolderView *emfv, struct _CamelFolder *folder, const char *uri);
+	void (*set_message)    (EMFolderView *emfv, const char *uid);
+
+	/* Signals */
+	void (*on_url)         (EMFolderView *emfv, const char *uri, const char *ni

dont reformat this.

 };
 
 GType em_folder_view_get_type(void);
@@ -107,6 +110,8 @@
 
 int em_folder_view_print(EMFolderView *emfv, int preview);
 
+void em_folder_view_set_statusbar (EMFolderView *emfv, gboolean statusbar);
+
 /* this could be on message-list */
 guint32 em_folder_view_disable_mask(EMFolderView *emfv);
 
Index: mail/mail-component.c
===================================================================
RCS file: /cvs/gnome/evolution/mail/mail-component.c,v
retrieving revision 1.33
diff -u -r1.33 mail-component.c
--- mail/mail-component.c	2 Dec 2003 23:29:09 -0000	1.33
+++ mail/mail-component.c	5 Dec 2003 11:54:57 -0000
@@ -319,6 +319,12 @@
 	(* G_OBJECT_CLASS (parent_class)->finalize) (object);
 }
 
+static void
+view_on_url (GObject *emitter, const char *url, const char *nice_url, MailComponent *mail_component)
+{
+	MailComponentPrivate *priv = mail_component->priv;

add a blank line between declarations and statements.

+	e_activity_handler_set_message (priv->activity_handler, nice_url);
+}
 
 /* Evolution::Component CORBA methods.  */
 
@@ -361,6 +367,9 @@
 	g_signal_connect (view_control, "activate", G_CALLBACK (view_control_activate_cb), view_widget);
 	
 	g_signal_connect (tree_widget, "folder-selected", G_CALLBACK (folder_selected_cb), view_widget);
+
+	g_signal_connect (view_widget, "on-url", G_CALLBACK (view_on_url), mail_component);
+	em_folder_view_set_statusbar ((EMFolderView*)view_widget, FALSE);

put this call after the view_widget is created, not with the signal setup code.

the rest seems ok (the shell stuff).

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