Fluent.InRibbonGallery.OnApplyTemplate C# (CSharp) Метод

        public override void OnApplyTemplate()
        {
            if (expandButton != null) expandButton.Click -= OnExpandClick;
            expandButton = GetTemplateChild("PART_ExpandButton") as ToggleButton;
            if (expandButton != null) expandButton.Click += OnExpandClick;

            if (dropDownButton != null) dropDownButton.Click -= OnDropDownClick;
            dropDownButton = GetTemplateChild("PART_DropDownButton") as ToggleButton;
            if (dropDownButton != null) dropDownButton.Click += OnDropDownClick;

            layoutRoot = GetTemplateChild("PART_LayoutRoot") as Panel;

            if (popup != null)
            {
                popup.Opened -= OnDropDownOpened;
                popup.Closed -= OnDropDownClosed;

                popup.PreviewMouseLeftButtonUp -= OnPopupPreviewMouseUp;
                popup.PreviewMouseLeftButtonDown -= OnPopupPreviewMouseDown;
            }

            popup = GetTemplateChild("PART_Popup") as Popup;

            if (popup != null)
            {
                popup.Opened += OnDropDownOpened;
                popup.Closed += OnDropDownClosed;

                popup.PreviewMouseLeftButtonUp += OnPopupPreviewMouseUp;
                popup.PreviewMouseLeftButtonDown += OnPopupPreviewMouseDown;

                KeyboardNavigation.SetControlTabNavigation(popup, KeyboardNavigationMode.Cycle);
                KeyboardNavigation.SetDirectionalNavigation(popup, KeyboardNavigationMode.Cycle);
                KeyboardNavigation.SetTabNavigation(popup, KeyboardNavigationMode.Cycle);
            }

            if (resizeVerticalThumb != null)
            {
                resizeVerticalThumb.DragDelta -= OnResizeVerticalDelta;
            }
            resizeVerticalThumb = GetTemplateChild("PART_ResizeVerticalThumb") as Thumb;
            if (resizeVerticalThumb != null)
            {
                resizeVerticalThumb.DragDelta += OnResizeVerticalDelta;
            }

            if (resizeBothThumb != null)
            {
                resizeBothThumb.DragDelta -= OnResizeBothDelta;
            }
            resizeBothThumb = GetTemplateChild("PART_ResizeBothThumb") as Thumb;
            if (resizeBothThumb != null)
            {
                resizeBothThumb.DragDelta += OnResizeBothDelta;
            }

            menuPanel = GetTemplateChild("PART_MenuPanel") as Panel;

            if (groupsMenuButton != null) groupsMenuButton.Items.Clear();
            groupsMenuButton = GetTemplateChild("PART_FilterDropDownButton") as DropDownButton;
            if (groupsMenuButton != null)
            {
                for (int i = 0; i < Filters.Count; i++)
                {
                    MenuItem item = new MenuItem();
                    item.Header = Filters[i].Title;
                    item.Tag = Filters[i];
                    item.IsDefinitive = false;
                    if (Filters[i] == SelectedFilter) item.IsChecked = true;
                    item.Click += OnFilterMenuItemClick;
                    groupsMenuButton.Items.Add(item);
                }
            }

            galleryPanel = GetTemplateChild("PART_GalleryPanel") as GalleryPanel;
            if (galleryPanel != null)
            {
                galleryPanel.MinItemsInRow = MaxItemsInRow;
                galleryPanel.MaxItemsInRow = MaxItemsInRow;
            }

            snappedImage = GetTemplateChild("PART_FakeImage") as Image;

            controlPresenter = GetTemplateChild("PART_ContentPresenter") as ContentControl;
            popupControlPresenter = GetTemplateChild("PART_PopupContentPresenter") as ContentControl;

            scrollViewer = GetTemplateChild("PART_ScrollViewer") as ScrollViewer;
        }