Microsoft.Windows.Controls.Ribbon.RibbonGallery.SetTemplateBindingForCurrentFilterItem C# (CSharp) Méthode

        private void SetTemplateBindingForCurrentFilterItem()
        {
            if (_currentFilterItem == null)
            {
                return;
            }

            // Assume we are not going to set up a binding for template.  The user may using FilterItemContainerStyle with a Setter
            // for HeaderTemplate.  In this case, we need to honor that setter so long as an item template for the filter has not
            // been set through one of the other APIs: FilterItemTemplate, AllFilterItemTemplate, FilterItemTemplateSelector.
            // Thus, only set this binding on HeaderTemplate when one of those template APIs is specified.  When a template for the filter item
            // is not specified, we unset this binding so that a Setter for HeaderTemplate in the Style is able to bleed through.
            bool templateShouldBeBound = false;

            if (FilterItemTemplateSelector is RibbonGalleryDefaultFilterItemTemplateSelector)
            {
                if (object.ReferenceEquals(CurrentFilter, AllFilterItem))
                {
                    if (this.AllFilterItemTemplate != null)
                    {
                        templateShouldBeBound = true;
                    }
                }
                else
                {
                    if (this.FilterItemTemplate != null)
                    {
                        templateShouldBeBound = true;
                    }
                }
            }
            else
            {
                // Someone is setting FilterItemTemplateSelector.  We should bind to the template that gets selected.
                templateShouldBeBound = true;
            }

            if (templateShouldBeBound && !FilterMenuButtonTemplateIsBound)
            {
                Binding currentFilterTemplateBinding = new Binding("CurrentFilterTemplate") { Source = this };
                _currentFilterItem.SetBinding(RibbonMenuItem.HeaderTemplateProperty, currentFilterTemplateBinding);
                FilterMenuButtonTemplateIsBound = true;
            }
            else if (!templateShouldBeBound && FilterMenuButtonTemplateIsBound)
            {
                BindingOperations.ClearBinding(_currentFilterItem, RibbonMenuItem.HeaderTemplateProperty);
                FilterMenuButtonTemplateIsBound = false;
            }
        }