Bug #499320 - Preview before import from command line

5 files changed, 160 insertions, 0 deletions

diff --git a/mail/importers/Makefile.am b/mail/importers/Makefile.am
index 65e099b461..4592de8eb5 100644
--- a/mail/importers/Makefile.am
+++ b/mail/importers/Makefile.am
@@ -27,6 +27,7 @@ libevolution_mail_importers_la_LIBADD =				\
 	$(top_builddir)/filter/libfilter.la			\
 	$(top_builddir)/mail/libevolution-mail.la		\
 	$(top_builddir)/shell/libeshell.la			\
+	$(top_builddir)/widgets/misc/libemiscwidgets.la		\
 	$(GNOME_PLATFORM_LIBS)					\
 	$(IMPORTERS_LIBS)
 
diff --git a/mail/importers/elm-importer.c b/mail/importers/elm-importer.c
index c9ddcf75d5..937bfa50de 100644
--- a/mail/importers/elm-importer.c
+++ b/mail/importers/elm-importer.c
@@ -357,6 +357,7 @@ static EImportImporter elm_importer = {
 	elm_getwidget,
 	elm_import,
 	elm_cancel,
+	NULL, /* get_preview */
 };
 
 EImportImporter *
diff --git a/mail/importers/evolution-mbox-importer.c b/mail/importers/evolution-mbox-importer.c
index 4fa4bf96f0..dc419dc89e 100644
--- a/mail/importers/evolution-mbox-importer.c
+++ b/mail/importers/evolution-mbox-importer.c
@@ -33,6 +33,7 @@
 #include <stdio.h>
 #include <ctype.h>
 #include <string.h>
+#include <errno.h>
 
 #include <gtk/gtk.h>
 #include <glib/gi18n.h>
@@ -53,6 +54,7 @@
 #include "mail-importer.h"
 
 #include "e-util/e-import.h"
+#include "misc/e-web-view-preview.h"
 
 typedef struct {
 	EImport *import;
@@ -247,6 +249,153 @@ mbox_cancel(EImport *ei, EImportTarget *target, EImportImporter *im)
 		camel_operation_cancel(importer->cancel);
 }
 
+static MboxImporterCreatePreviewFunc create_preview_func = NULL;
+static MboxImporterFillPreviewFunc fill_preview_func = NULL;
+
+void
+mbox_importer_set_preview_funcs (MboxImporterCreatePreviewFunc create_func, MboxImporterFillPreviewFunc fill_func)
+{
+	create_preview_func = create_func;
+	fill_preview_func = fill_func;
+}
+
+static void
+preview_selection_changed_cb (GtkTreeSelection *selection, EWebViewPreview *preview)
+{
+	GtkTreeIter iter;
+	GtkTreeModel *model = NULL;
+	gboolean found = FALSE;
+
+	g_return_if_fail (selection != NULL);
+	g_return_if_fail (preview != NULL);
+	g_return_if_fail (fill_preview_func != NULL);
+
+	if (gtk_tree_selection_get_selected (selection, &model, &iter) && model) {
+		CamelMimeMessage *msg = NULL;
+
+		gtk_tree_model_get (model, &iter, 2, &msg, -1);
+
+		if (msg) {
+			found = TRUE;
+			fill_preview_func (G_OBJECT (preview), msg);
+			g_object_unref (msg);
+		}
+	}
+
+	if (!found) {
+		e_web_view_preview_begin_update (preview);
+		e_web_view_preview_end_update (preview);
+	}
+}
+
+static GtkWidget *
+mbox_get_preview (EImport *ei, EImportTarget *target, EImportImporter *im)
+{
+	GtkWidget *preview = NULL;
+	EImportTargetURI *s = (EImportTargetURI *)target;
+	gchar *filename;
+	gint fd;
+	CamelMimeParser *mp;
+	GtkListStore *store = NULL;
+	GtkTreeIter iter;
+	GtkWidget *preview_widget = NULL;
+
+	if (!create_preview_func || !fill_preview_func)
+		return NULL;
+
+	filename = g_filename_from_uri (s->uri_src, NULL, NULL);
+	if (!filename) {
+		g_message (G_STRLOC ": Couldn't get filename from URI '%s'", s->uri_src);
+		return NULL;
+	}
+
+	fd = g_open (filename, O_RDONLY|O_BINARY, 0);
+	if (fd == -1) {
+		g_warning ("Cannot find source file to import '%s': %s", filename, g_strerror (errno));
+		g_free (filename);
+		return NULL;
+	}
+
+	g_free (filename);
+
+	mp = camel_mime_parser_new();
+	camel_mime_parser_scan_from (mp, TRUE);
+	if (camel_mime_parser_init_with_fd (mp, fd) == -1) {
+		g_object_unref (mp);
+		return NULL;
+	}
+
+	while (camel_mime_parser_step (mp, NULL, NULL) == CAMEL_MIME_PARSER_STATE_FROM) {
+		CamelMimeMessage *msg;
+		gchar *from;
+
+		msg = camel_mime_message_new();
+		if (camel_mime_part_construct_from_parser ((CamelMimePart *)msg, mp) == -1) {
+			g_object_unref (msg);
+			break;
+		}
+
+		if (!store)
+			store = gtk_list_store_new (3, G_TYPE_STRING, G_TYPE_STRING, CAMEL_TYPE_MIME_MESSAGE);
+
+		from = NULL;
+		if (camel_mime_message_get_from (msg))
+			from = camel_address_encode (CAMEL_ADDRESS (camel_mime_message_get_from (msg)));
+
+		gtk_list_store_append (store, &iter);
+		gtk_list_store_set (store, &iter,
+			0, camel_mime_message_get_subject (msg) ? camel_mime_message_get_subject (msg) : "",
+			1, from ? from : "",
+			2, msg,
+			-1);
+
+		g_object_unref (msg);
+		g_free (from);
+
+		camel_mime_parser_step (mp, NULL, NULL);
+	}
+
+	if (store) {
+		GtkTreeView *tree_view;
+		GtkTreeSelection *selection;
+
+		preview = e_web_view_preview_new ();
+		gtk_widget_show (preview);
+
+		tree_view = e_web_view_preview_get_tree_view (E_WEB_VIEW_PREVIEW (preview));
+		g_return_val_if_fail (tree_view != NULL, NULL);
+
+		gtk_tree_view_set_model (tree_view, GTK_TREE_MODEL (store));
+		g_object_unref (store);
+
+		/* Translators: Column header for a message subject */
+		gtk_tree_view_insert_column_with_attributes (tree_view, -1, C_("mboxImp", "Subject"),
+			gtk_cell_renderer_text_new (), "text", 0, NULL);
+
+		/* Translators: Column header for a message From address */
+		gtk_tree_view_insert_column_with_attributes (tree_view, -1, C_("mboxImp", "From"),
+			gtk_cell_renderer_text_new (), "text", 1, NULL);
+
+		if (gtk_tree_model_iter_n_children (GTK_TREE_MODEL (store), NULL) > 1)
+			e_web_view_preview_show_tree_view (E_WEB_VIEW_PREVIEW (preview));
+
+		create_preview_func (G_OBJECT (preview), &preview_widget);
+		g_return_val_if_fail (preview_widget != NULL, NULL);
+
+		e_web_view_preview_set_preview (E_WEB_VIEW_PREVIEW (preview), preview_widget);
+		gtk_widget_show (preview_widget);
+
+		selection = gtk_tree_view_get_selection (tree_view);
+		g_return_val_if_fail (gtk_tree_model_get_iter_first (GTK_TREE_MODEL (store), &iter), NULL);
+		gtk_tree_selection_select_iter (selection, &iter);
+		g_signal_connect (selection, "changed", G_CALLBACK (preview_selection_changed_cb), preview);
+
+		preview_selection_changed_cb (selection, E_WEB_VIEW_PREVIEW (preview));
+	}
+
+	return preview;
+}
+
 static EImportImporter mbox_importer = {
 	E_IMPORT_TARGET_URI,
 	0,
@@ -254,6 +403,7 @@ static EImportImporter mbox_importer = {
 	mbox_getwidget,
 	mbox_import,
 	mbox_cancel,
+	mbox_get_preview,
 };
 
 EImportImporter *
diff --git a/mail/importers/mail-importer.h b/mail/importers/mail-importer.h
index 5f2f8c8b26..15de575f8b 100644
--- a/mail/importers/mail-importer.h
+++ b/mail/importers/mail-importer.h
@@ -29,6 +29,13 @@
 
 EImportImporter *mbox_importer_peek(void);
 
+typedef void (*MboxImporterCreatePreviewFunc)(GObject *preview, GtkWidget **preview_widget);
+typedef void (*MboxImporterFillPreviewFunc)(GObject *preview, CamelMimeMessage *msg);
+
+/* 'create_func' is a function to create a view. 'fill_func' is to fill view with a preview of a message 'msg'
+   (mail importer cannot link to em-format-html-display directly) */
+void mbox_importer_set_preview_funcs (MboxImporterCreatePreviewFunc create_func, MboxImporterFillPreviewFunc fill_func);
+
 EImportImporter *elm_importer_peek(void);
 EImportImporter *pine_importer_peek(void);
 
diff --git a/mail/importers/pine-importer.c b/mail/importers/pine-importer.c
index 07b7f22fbb..ed3b62e0b1 100644
--- a/mail/importers/pine-importer.c
+++ b/mail/importers/pine-importer.c
@@ -410,6 +410,7 @@ static EImportImporter pine_importer = {
 	pine_getwidget,
 	pine_import,
 	pine_cancel,
+	NULL, /* get_preview */
 };
 
 EImportImporter *