def addFileUrl(self, url, reason=None):
        if url not in self.urls:
            mime = KMimeType.findByUrl(url)[0]
            path = url.url()
            filename = url.fileName()

            item = QListWidgetItem()
            if self.project and path.startswith(self.project):
                path = path[len(self.project):]
                item.setWhatsThis(path)
                item.setText("<b>%s</b>: <i>%s</i>" % (filename, path))
            else:
                item.setWhatsThis(filename)
                item.setText("<b>%s</b>" % filename)
            if reason:
                item.setToolTip(reason)
            item.setIcon(QIcon(self.iconLoader.loadMimeTypeIcon(mime.iconName(), KIconLoader.Small)))
            self.listUrl.addItem(item)

            if url.fileName().find(self.txtFilter.text()) < 0:
                self.listUrl.setItemHidden(item, True)
            self.urls.append(url)

            self.refreshFilter()