libview: add ev_view_remove_annotation

Hide annotation windows if necessary and unset selected
element before removing an annotation.

https://bugzilla.gnome.org/show_bug.cgi?id=649044
origin commit:
https://git.gnome.org/browse/evince/commit/?id=927e956

2 files changed, 36 insertions, 0 deletions

diff --git a/libview/ev-view.c b/libview/ev-view.c
index 6258ea33..6f7f2470 100644
--- a/libview/ev-view.c
+++ b/libview/ev-view.c
@@ -3093,6 +3093,40 @@ ev_view_cancel_add_annotation (EvView *view)
 	ev_view_handle_cursor_over_xy (view, x, y);
 }
 
+void
+ev_view_remove_annotation (EvView       *view,
+                           EvAnnotation *annot)
+{
+        guint page;
+
+        g_return_if_fail (EV_IS_VIEW (view));
+        g_return_if_fail (EV_IS_ANNOTATION (annot));
+
+        page = ev_annotation_get_page_index (annot);
+
+        if (EV_IS_ANNOTATION_MARKUP (annot)) {
+                EvViewWindowChild *child;
+
+                child = ev_view_find_window_child_for_annot (view, page, annot);
+                if (child) {
+                        view->window_children = g_list_remove (view->window_children, child);
+                        gtk_widget_destroy (child->window);
+                        g_free (child);
+                }
+        }
+        _ev_view_set_focused_element (view, NULL, -1);
+
+        ev_document_doc_mutex_lock ();
+        ev_document_annotations_remove_annotation (EV_DOCUMENT_ANNOTATIONS (view->document),
+                                                   annot);
+        ev_document_doc_mutex_unlock ();
+
+        ev_page_cache_mark_dirty (view->page_cache, page);
+
+        /* FIXME: only redraw the annot area */
+        ev_view_reload_page (view, page, NULL);
+}
+
 static gboolean
 ev_view_synctex_backward_search (EvView *view,
 				 gdouble x,
diff --git a/libview/ev-view.h b/libview/ev-view.h
index 31a9bf41..d46cfcef 100644
--- a/libview/ev-view.h
+++ b/libview/ev-view.h
@@ -112,6 +112,8 @@ void           ev_view_focus_annotation      (EvView          *view,
 void           ev_view_begin_add_annotation  (EvView          *view,
 					      EvAnnotationType annot_type);
 void           ev_view_cancel_add_annotation (EvView          *view);
+void           ev_view_remove_annotation     (EvView          *view,
+                                              EvAnnotation    *annot);
 
 /*For epub*/
 void           ev_view_disconnect_handlers   (EvView          *view);