예제 #1
0
        /// <summary>
        /// Create model for FilterControl, if it is possible in current state.
        /// </summary>
        /// <returns>Instance of FilterControlVm or null.</returns>
        protected virtual FilterControlVm CreateModel()
        {
            FilterControlVm vm = null;

            filterPresenter = Parent == null ? null : FilterPresenter.TryGet(ParentCollection);
            if (filterPresenter != null)
            {
                vm = filterPresenter.TryGetFilterControlVm(Key, FilterInitializersManager);
            }
            return(vm);
        }
예제 #2
0
        /// <summary>
        /// Initializes the filter view model.
        /// </summary>
        protected override FilterControlVm CreateModel()
        {
            FilterControlVm vm = null;

            filterPresenter = Parent == null ? null : FilterPresenter.TryGet(ParentCollection);
            if (filterPresenter != null)
            {
                if (Key == null)
                {
                    DataGridColumnHeader columnHeader = this.GetParent <DataGridColumnHeader>();
                    if (columnHeader == null)
                    {
                        return(null);
                    }
                    DataGridColumn column = columnHeader.Column;
                    if (column == null)
                    {
                        return(null);
                    }
                    DataGrid dataGrid = columnHeader.GetParent <DataGrid>();
                    if (dataGrid == null)
                    {
                        return(null);
                    }
                    if (column.DisplayIndex >= dataGrid.Columns.Count)
                    {
                        return(null);
                    }
                    IEnumerable <FilterInitializer> initializers = GetInitializers(column) ?? FilterInitializersManager;
                    string key = Key ?? GetColumnKey(column);
                    vm = filterPresenter.TryGetFilterControlVm(key, initializers);
                }
                else
                {
                    IEnumerable <FilterInitializer> initializers = FilterInitializersManager;
                    vm = filterPresenter.TryGetFilterControlVm(Key, initializers);
                }
                if (vm != null)
                {
                    vm.IsEnable = true;
                }
            }
            return(vm);
        }