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Add item number [WIP]

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qianlifeng
2015-02-09 00:13:08 +08:00
parent 8d33644749
commit b8f829dbc3
6 changed files with 62 additions and 16 deletions
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55
Wox/ResultPanel.xaml.cs
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@@ -130,21 +130,58 @@ namespace Wox
public List<Result> GetVisibleResults()
{
var theStackPanel = GetInnerStackPanel(lbResults);
List<Result> visibleElements = new List<Result>();
for (int i = 0; i < theStackPanel.Children.Count; i++)
VirtualizingStackPanel virtualizingStackPanel = GetInnerStackPanel(lbResults);
for (int i = (int)virtualizingStackPanel.VerticalOffset; i <= virtualizingStackPanel.VerticalOffset + virtualizingStackPanel.ViewportHeight; i++)
{
if (i >= theStackPanel.VerticalOffset && i <= theStackPanel.VerticalOffset + theStackPanel.ViewportHeight)
ListBoxItem item = lbResults.ItemContainerGenerator.ContainerFromIndex(i) as ListBoxItem;
if (item != null)
{
FrameworkElement element = theStackPanel.Children[i] as FrameworkElement;
visibleElements.Add(element.DataContext as Result);
visibleElements.Add(item.DataContext as Result);
}
}
return visibleElements;
}
private void UpdateItemNumber()
{
VirtualizingStackPanel virtualizingStackPanel = GetInnerStackPanel(lbResults);
int index = 0;
for (int i = (int)virtualizingStackPanel.VerticalOffset; i <= virtualizingStackPanel.VerticalOffset + virtualizingStackPanel.ViewportHeight; i++)
{
index++;
ListBoxItem item = lbResults.ItemContainerGenerator.ContainerFromIndex(i) as ListBoxItem;
if (item != null)
{
ContentPresenter myContentPresenter = FindVisualChild<ContentPresenter>(item);
if (myContentPresenter != null)
{
DataTemplate dataTemplate = myContentPresenter.ContentTemplate;
TextBlock tbItemNumber = (TextBlock)dataTemplate.FindName("tbItemNumber", myContentPresenter);
tbItemNumber.Text = index.ToString();
}
}
}
}
private childItem FindVisualChild<childItem>(DependencyObject obj) where childItem : DependencyObject
{
for (int i = 0; i < VisualTreeHelper.GetChildrenCount(obj); i++)
{
DependencyObject child = VisualTreeHelper.GetChild(obj, i);
if (child != null && child is childItem)
return (childItem)child;
else
{
childItem childOfChild = FindVisualChild<childItem>(child);
if (childOfChild != null)
return childOfChild;
}
}
return null;
}
private VirtualizingStackPanel GetInnerStackPanel(FrameworkElement element)
{
for (int i = 0; i < VisualTreeHelper.GetChildrenCount(element); i++)
@@ -189,6 +226,10 @@ namespace Wox
if (e.AddedItems.Count > 0 && e.AddedItems[0] != null)
{
lbResults.ScrollIntoView(e.AddedItems[0]);
Dispatcher.DelayInvoke("UpdateItemNumber", o =>
{
UpdateItemNumber();
}, TimeSpan.FromMilliseconds(3));
}
}