/// <summary>
/// Recalculates the size of the presenter to match its parent.
/// </summary>
/// <param name="sender">Sender</param>
/// <param name="e">Event args</param>
private void OnSizeChanged(object sender, SizeChangedEventArgs e)
{
if (_presenter != null)
{
ExpanderView parent = _presenter.GetParentByType <ExpanderView>();
GeneralTransform gt = parent.TransformToVisual(_presenter);
Point childToParentCoordinates = gt.Transform(new Point(0, 0));
_presenter.Width = parent.RenderSize.Width + childToParentCoordinates.X;
}
}
/// <summary>
/// IsNonExpandableProperty changed handler.
/// </summary>
/// <param name="obj">The dependency object.</param>
/// <param name="e">The event information.</param>
private static void OnIsNonExpandablePropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
ExpanderView source = (ExpanderView)obj;
if ((bool)e.NewValue)
{
if (source.IsExpanded)
{
source.IsExpanded = false;
}
}
source.UpdateVisualState(true);
}
/// <summary>
/// IsExpandedProperty changed handler.
/// </summary>
/// <param name="obj">The dependency object.</param>
/// <param name="e">The event information.</param>
private static void OnIsExpandedPropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
ExpanderView source = (ExpanderView)obj;
RoutedEventArgs args = new RoutedEventArgs();
if ((bool)e.NewValue)
{
source.OnExpanded(args);
}
else
{
source.OnCollapsed(args);
}
source.UpdateVisualState(true);
}
public void InitTreeView()
{
if (null == _ds)
throw new ArgumentNullException("DataSource", "数据源不能为空");
List<ExpanderSelectorDataSource> list = _ds.GetRoots();
foreach (var item in list)
{
if(_ds.IsLeaf(item.ID))
{
var leaf = new Border
{
Margin = new Thickness(0, 10, 0, 0),
Style = Application.Current.Resources["ExpanderLeafComp"] as Style,
Child = new TextBlock()
{
Text = item.Name,
Style = Application.Current.Resources["ExpanderViewTextBlock"] as Style
},
};
leaf.Tag = item;
leaf.Tap += leaf_Tap;
EVStack.Children.Add(leaf);
}
else
{
ExpanderView view = new ExpanderView
{
Style = Application.Current.Resources["ExpanderViewStyleForSelector"] as Style,
Margin = new Thickness(0, 10, 0, 0),
Expander = new Grid
{
Width = Application.Current.Host.Content.ActualWidth,
Background = new SolidColorBrush(Color.FromArgb(255, 186, 122, 53)),
Children = {
new TextBlock
{
Text = item.Name,
Style = Application.Current.Resources["ExpanderViewTextBlock"] as Style
},
new Image
{
Style = Application.Current.Resources["ExpanerViewSeeMoreIcon"] as Style,
Margin = new Thickness(indentSeeMoreIcon, 0, 0, 0),
}
}
}
};
InitChildViewRecursion(item.ID, ref view, 1);
EVStack.Children.Add(view);
}
}
}
private void InitChildViewRecursion(String Id, ref ExpanderView ev, int level)
{
List<ExpanderSelectorDataSource> list = _ds.GetChildNodeById(Id);
if (null != list && list.Count() != 0)
{
foreach (var item in list)
{
//根节点
if (_ds.IsLeaf(item.ID))
{
var leaf = new Border
{
Margin = new Thickness(indentChildExpander, 10, 0, 0),
Style = Application.Current.Resources["ExpanderLeafComp"] as Style,
Child = new TextBlock()
{
Text = item.Name,
Style = Application.Current.Resources["ExpanderViewTextBlock"] as Style
},
};
leaf.Tag = item;
leaf.Tap += leaf_Tap;
ev.Items.Add(leaf);
}
else //非根节点，继续搜索
{
ExpanderView view = new ExpanderView
{
Style = Application.Current.Resources["ExpanderViewStyleForSelector"] as Style,
Margin = new Thickness(indentChildExpander, 10, 0, 0),
Expander = new Border
{
Background = new SolidColorBrush(Color.FromArgb(255, 186, 122, 53)),
Child = new Grid
{
Width = Application.Current.Host.Content.ActualWidth,
Background = new SolidColorBrush(Color.FromArgb(255, 186, 122, 53)),
Children = {
new TextBlock
{
Text = item.Name,
Style = Application.Current.Resources["ExpanderViewTextBlock"] as Style
},
new Image
{
Style = Application.Current.Resources["ExpanerViewSeeMoreIcon"] as Style,
Margin = new Thickness(indentSeeMoreIcon - indentChildExpander * level, 0, 0, 0)
}
}
}
},
};
view.Tap += view_Tap;
InitChildViewRecursion(item.ID, ref view, level + 1);
ev.Items.Add(view);
}
}
}
}
private void CreateItem(ExpanderView list, String groupName)
{
var transform = list.TransformToVisual(Application.Current.RootVisual);
var pointOffset = transform.Transform(new Point(0, 0));
double verticalOffset = pointOffset.Y - 50;
var createItem = new CreateItemControl()
{
GroupName = groupName
};
SetPopupedControlEvent(createItem);
createItem.Closed += delegate(object sender, PopupEventArgs e)
{
list.IsExpanded = true;
if (verticalOffset > 0)
{
var storyboard2 = AnimationUtils.GetStoryboard();
AnimationUtils.SetHeightAnimation(storyboard2, VacancyStackPanel as FrameworkElement, 0, 0.3);
storyboard2.Begin();
}
if (e.Done)//Expand the new item
{
FrameworkElement item = list.Items[0] as FrameworkElement;
if (item != null)
{
StackPanel panel = item.FindName("ItemPanel") as StackPanel;
if (panel != null)
{
if (mCurrentItemPanel != null)
{
HideItemDetails(mCurrentItemPanel);
}
ShowItemDetails(panel);
mCurrentItemPanel = panel;
}
}
}
};
if (verticalOffset == 0)
{
PopupWindow.ShowWindow(createItem);
}
else
{
var storyboard = AnimationUtils.GetStoryboard();
if (verticalOffset > 0)
{
AnimationUtils.SetHeightAnimation(storyboard, VacancyStackPanel as FrameworkElement, verticalOffset + 1000, 0.3);
}
AnimationUtils.SetAnyAnimation(storyboard, this as FrameworkElement, ScrowViewerVerticalOffsetProperty,
MainScrollViewer.VerticalOffset, MainScrollViewer.VerticalOffset + verticalOffset, 0.3);
storyboard.Completed += delegate(object sender, EventArgs e)
{
PopupWindow.ShowWindow(createItem);
};
storyboard.Begin();
}
}
/// <summary>
/// NonExpandableHeaderTemplate changed handler.
/// </summary>
/// <param name="obj">The dependency object.</param>
/// <param name="e">The event information.</param>
private static void OnNonExpandableHeaderTemplatePropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
ExpanderView source = (ExpanderView)obj;
source.OnNonExpandableHeaderTemplateChanged((DataTemplate)e.OldValue, (DataTemplate)e.NewValue);
}
/// <summary>
/// ExpanderProperty changed handler.
/// </summary>
/// <param name="obj">The dependency object.</param>
/// <param name="e">The event information.</param>
private static void OnExpanderPropertyChanged(DependencyObject obj, DependencyPropertyChangedEventArgs e)
{
ExpanderView source = (ExpanderView)obj;
source.OnExpanderChanged(e.OldValue, e.NewValue);
}