[gnome-documents] view: Stop listening to info-updated when an item is removed

[Debarshi Ray <debarshir src gnome org>]

commit fa57dc6de09a9ffe781a5e662eb715067f410203
Author: Debarshi Ray <debarshir gnome org>
Date:   Wed Aug 19 14:06:56 2015 +0200

    view: Stop listening to info-updated when an item is removed
    
    Items that have been removed from DocumentManager can still emit the
    signal due to any ongoing thumbnailing operation. This can cause
    ViewModel to erroneously re-add an item that is supposed to have been
    removed.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=726450

 src/view.js |   13 +++++++++++--
 1 files changed, 11 insertions(+), 2 deletions(-)
---
diff --git a/src/view.js b/src/view.js
index dc04de6..044b1d8 100644
--- a/src/view.js
+++ b/src/view.js
@@ -84,6 +84,7 @@ const ViewModel = new Lang.Class({
         this.set_sort_column_id(Gd.MainColumns.MTIME,
                                 Gtk.SortType.DESCENDING);
 
+        this._infoUpdatedIds = {};
         this._resetCountId = 0;
 
         this._mode = windowMode;
@@ -194,23 +195,31 @@ const ViewModel = new Lang.Class({
         if (doc.rowRefs[this._rowRefKey])
             return;
 
+        let infoUpdatedId = this._infoUpdatedIds[doc.id];
+        if (infoUpdatedId) {
+            doc.disconnect(infoUpdatedId);
+            delete this._infoUpdatedIds[doc.id];
+        }
+
         let activeCollection = Application.documentManager.getActiveCollection();
         let windowMode = Application.modeController.getWindowMode();
 
         if (!activeCollection || this._mode != windowMode) {
             if (this._mode == WindowMode.WindowMode.COLLECTIONS && !doc.collection
                 || this._mode == WindowMode.WindowMode.DOCUMENTS && doc.collection) {
-                doc.connect('info-updated', Lang.bind(this, this._onInfoUpdated));
+                this._infoUpdatedIds[doc.id] = doc.connect('info-updated', Lang.bind(this, 
this._onInfoUpdated));
                 return;
             }
         }
 
         this._addItem(doc);
-        doc.connect('info-updated', Lang.bind(this, this._onInfoUpdated));
+        this._infoUpdatedIds[doc.id] = doc.connect('info-updated', Lang.bind(this, this._onInfoUpdated));
     },
 
     _onItemRemoved: function(source, doc) {
         this._removeItem(doc);
+        doc.disconnect(this._infoUpdatedIds[doc.id]);
+        delete this._infoUpdatedIds[doc.id];
     },
 
     _resetCount: function() {