Bloom.Edit.EditingModel.SavePageFrameState C# (CSharp) Method

        void SavePageFrameState()
        {
            var body = _view.GetPageBody();
            Debug.Assert(body!=null, "(Debug Only) no body when doing SavePageFrameState()" );

            // not worth crashing over a timing problem that means we don't save zoom state
            if (body == null)
                return; // BL-3075, not sure how this can happen but it has. Possibly the view is in some state like about:null which has no body.
            var styleAttr = body.Attributes["style"];

            if (styleAttr == null)
                return;
            var style = styleAttr.NodeValue;
            var match = Regex.Match(style, "scale\\(([^,]*),");
            if (!match.Success)
                return;
            var pageZoom = match.Groups[1].Value;
            if (pageZoom != Settings.Default.PageZoom)
            {
                Settings.Default.PageZoom = pageZoom;
                Settings.Default.Save();
            }
        }