enable ask drop action and hook onto drag motion. (drag_motion):

2004-10-01  Not Zed  <NotZed@Ximian.com>

        * e-msg-composer.c (create_composer): enable ask drop action and
        hook onto drag motion.
        (drag_motion): implement.
        (drop_action): do the work here now.
        (drag_data_received): popup a menu if the action is ask.
        (drop_popup_copy, drop_popup_move, drop_popup_cancel):
        (drop_popup_free): Popup callbacks.

svn path=/trunk/; revision=27441

1 files changed, 159 insertions, 10 deletions

diff --git a/composer/e-msg-composer.c b/composer/e-msg-composer.c
index 67b3ea8f1c..e80b222f3b 100644
--- a/composer/e-msg-composer.c
+++ b/composer/e-msg-composer.c
@@ -117,6 +117,7 @@
 #include "mail/mail-ops.h"
 #include "mail/mail-mt.h"
 #include "mail/mail-session.h"
+#include "mail/em-popup.h"
 
 #include "e-msg-composer.h"
 #include "e-msg-composer-attachment-bar.h"
@@ -161,6 +162,19 @@ static GtkTargetEntry drop_types[] = {
 
 #define num_drop_types (sizeof (drop_types) / sizeof (drop_types[0]))
 
+static struct {
+	char *target;
+	GdkAtom atom;
+	guint32 actions;
+} drag_info[] = {
+	{ "message/rfc822", 0, GDK_ACTION_COPY },
+	{ "x-uid-list", 0, GDK_ACTION_ASK|GDK_ACTION_MOVE|GDK_ACTION_COPY },
+	{ "text/uri-list", 0, GDK_ACTION_COPY },
+	{ "_NETSCAPE_URL", 0, GDK_ACTION_COPY },
+	{ "text/x-vcard", 0, GDK_ACTION_COPY },
+	{ "text/calendar", 0, GDK_ACTION_COPY },
+};
+
 static const char *emc_draft_format_names[] = { "pgp-sign", "pgp-encrypt", "smime-sign", "smime-encrypt" };
 
 
@@ -2645,10 +2659,24 @@ attach_message(EMsgComposer *composer, CamelMimeMessage *msg)
 	camel_object_unref(mime_part);
 }
 
+struct _drop_data {
+	EMsgComposer *composer;
+
+	GdkDragContext *context;
+	/* Only selection->data and selection->length are valid */
+	GtkSelectionData *selection;
+
+	guint32 action;
+	guint info;
+	guint time;
+
+	unsigned int move:1;
+	unsigned int moved:1;
+	unsigned int aborted:1;
+};
+
 static void
-drag_data_received (EMsgComposer *composer, GdkDragContext *context,
-		    int x, int y, GtkSelectionData *selection,
-		    guint info, guint time)
+drop_action(EMsgComposer *composer, GdkDragContext *context, guint32 action, GtkSelectionData *selection, guint info, guint time)
 {
 	char *tmp, *str, **urls;
 	CamelMimePart *mime_part;
@@ -2656,8 +2684,8 @@ drag_data_received (EMsgComposer *composer, GdkDragContext *context,
 	CamelURL *url;
 	CamelMimeMessage *msg;
 	char *content_type;
-	int i;
-	
+	int i, success=FALSE, delete=FALSE;
+
 	switch (info) {
 	case DND_TYPE_MESSAGE_RFC822:
 		d(printf ("dropping a message/rfc822\n"));
@@ -2667,8 +2695,11 @@ drag_data_received (EMsgComposer *composer, GdkDragContext *context,
 		camel_stream_reset (stream);
 		
 		msg = camel_mime_message_new ();
-		if (camel_data_wrapper_construct_from_stream((CamelDataWrapper *)msg, stream) != -1)
+		if (camel_data_wrapper_construct_from_stream((CamelDataWrapper *)msg, stream) != -1) {
 			attach_message(composer, msg);
+			success = TRUE;
+			delete = action == GDK_ACTION_MOVE;
+		}
 
 		camel_object_unref(msg);
 		camel_object_unref(stream);
@@ -2707,6 +2738,7 @@ drag_data_received (EMsgComposer *composer, GdkDragContext *context,
 		}
 		
 		g_free (urls);
+		success = TRUE;
 		break;
 	case DND_TYPE_TEXT_VCARD:
 	case DND_TYPE_TEXT_CALENDAR:
@@ -2724,6 +2756,7 @@ drag_data_received (EMsgComposer *composer, GdkDragContext *context,
 		camel_object_unref (mime_part);
 		g_free (content_type);
 
+		success = TRUE;
 		break;
 	case DND_TYPE_X_UID_LIST: {
 		GPtrArray *uids;
@@ -2788,6 +2821,8 @@ drag_data_received (EMsgComposer *composer, GdkDragContext *context,
 					camel_object_unref(mime_part);
 					camel_object_unref(mp);
 				}
+				success = TRUE;
+				delete = action == GDK_ACTION_MOVE;
 			fail:
 				if (camel_exception_is_set(&ex)) {
 					char *name;
@@ -2813,6 +2848,117 @@ drag_data_received (EMsgComposer *composer, GdkDragContext *context,
 		d(printf ("dropping an unknown\n"));
 		break;
 	}
+
+	printf("Drag finished, success %d delete %d\n", success, delete);
+
+	gtk_drag_finish(context, success, delete, time);
+}
+
+static void
+drop_popup_copy(EPopup *ep, EPopupItem *item, void *data)
+{
+	struct _drop_data *m = data;
+	drop_action(m->composer, m->context, GDK_ACTION_COPY, m->selection, m->info, m->time);
+}
+
+static void
+drop_popup_move(EPopup *ep, EPopupItem *item, void *data)
+{
+	struct _drop_data *m = data;
+	drop_action(m->composer, m->context, GDK_ACTION_MOVE, m->selection, m->info, m->time);
+}
+
+static void
+drop_popup_cancel(EPopup *ep, EPopupItem *item, void *data)
+{
+	struct _drop_data *m = data;
+	gtk_drag_finish(m->context, FALSE, FALSE, m->time);
+}
+
+static EPopupItem drop_popup_menu[] = {
+	{ E_POPUP_ITEM, "00.emc.02", N_("_Copy"), drop_popup_copy, NULL, "stock_mail-copy", 0 },
+	{ E_POPUP_ITEM, "00.emc.03", N_("_Move"), drop_popup_move, NULL, "stock_mail-move", 0 },
+	{ E_POPUP_BAR, "10.emc" },
+	{ E_POPUP_ITEM, "99.emc.00", N_("Cancel _Drag"), drop_popup_cancel, NULL, NULL, 0 },
+};
+
+static void
+drop_popup_free(EPopup *ep, GSList *items, void *data)
+{
+	struct _drop_data *m = data;
+
+	g_slist_free(items);
+
+	g_object_unref(m->context);
+	g_object_unref(m->composer);
+	g_free(m->selection->data);
+	g_free(m->selection);
+	g_free(m);
+}
+
+static void
+drag_data_received (EMsgComposer *composer, GdkDragContext *context,
+		    int x, int y, GtkSelectionData *selection,
+		    guint info, guint time)
+{
+	if (selection->data == NULL || selection->length == -1)
+		return;
+
+	if (context->action == GDK_ACTION_ASK) {
+		EMPopup *emp;
+		GSList *menus = NULL;
+		GtkMenu *menu;
+		int i;
+		struct _drop_data *m;
+
+		m = g_malloc0(sizeof(*m));
+		m->context = context;
+		g_object_ref(context);
+		m->composer = composer;
+		g_object_ref(composer);
+		m->action = context->action;
+		m->info = info;
+		m->time = time;
+		m->selection = g_malloc0(sizeof(*m->selection));
+		m->selection->data = g_malloc(selection->length);
+		memcpy(m->selection->data, selection->data, selection->length);
+		m->selection->length = selection->length;
+
+		emp = em_popup_new("com.ximian.mail.composer.popup.drop");
+		for (i=0;i<sizeof(drop_popup_menu)/sizeof(drop_popup_menu[0]);i++)
+			menus = g_slist_append(menus, &drop_popup_menu[i]);
+
+		e_popup_add_items((EPopup *)emp, menus, drop_popup_free, m);
+		menu = e_popup_create_menu_once((EPopup *)emp, NULL, 0, 0);
+		gtk_menu_popup(menu, NULL, NULL, NULL, NULL, 0, time);
+	} else {
+		drop_action(composer, context, context->action, selection, info, time);
+	}
+}
+
+static gboolean
+drag_motion(GObject *o, GdkDragContext *context, gint x, gint y, guint time, EMsgComposer *composer)
+{
+	GList *targets;
+	GdkDragAction action, actions = 0;
+
+	for (targets = context->targets; targets; targets = targets->next) {
+		int i;
+
+		for (i=0;i<sizeof(drag_info)/sizeof(drag_info[0]);i++)
+			if (targets->data == (void *)drag_info[i].atom)
+				actions |= drag_info[i].actions;
+	}
+
+	actions &= context->actions;
+	action = context->suggested_action;
+	/* we default to copy */
+	if (action == GDK_ACTION_ASK && (actions & (GDK_ACTION_MOVE|GDK_ACTION_COPY)) != (GDK_ACTION_MOVE|GDK_ACTION_COPY))
+		action = GDK_ACTION_COPY;
+
+	gdk_drag_status(context, action, time);
+
+	return action != 0;
 }
 
 static void
@@ -2821,6 +2967,10 @@ class_init (EMsgComposerClass *klass)
 	GtkObjectClass *object_class;
 	GtkWidgetClass *widget_class;
 	GObjectClass *gobject_class;
+	int i;
+
+	for (i=0;i<sizeof(drag_info)/sizeof(drag_info[0]);i++)
+		drag_info[i].atom = gdk_atom_intern(drag_info[i].target, FALSE);
 
 	gobject_class = G_OBJECT_CLASS(klass);
 	object_class = GTK_OBJECT_CLASS (klass);
@@ -3178,10 +3328,9 @@ create_composer (int visible_mask)
 	}
 
 	/* DND support */
-	gtk_drag_dest_set (GTK_WIDGET (composer), GTK_DEST_DEFAULT_ALL,
-			   drop_types, num_drop_types, GDK_ACTION_COPY);
-	g_signal_connect (composer, "drag_data_received",
-			  G_CALLBACK (drag_data_received), NULL);
+	gtk_drag_dest_set (GTK_WIDGET (composer), GTK_DEST_DEFAULT_ALL,  drop_types, num_drop_types, GDK_ACTION_COPY|GDK_ACTION_ASK|GDK_ACTION_MOVE);
+	g_signal_connect(composer, "drag_data_received", G_CALLBACK (drag_data_received), NULL);
+	g_signal_connect(composer, "drag-motion", G_CALLBACK(drag_motion), composer);
 	e_msg_composer_load_config (composer, visible_mask);
 	
 	setup_ui (composer);