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Vitali Semianiaka
2021-04-14 16:26:56 +03:00
parent 55e354b980
commit 81af2d3c8c
105 changed files with 31645 additions and 0 deletions
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96
BrightSharp.NET/Diagrams/SelectionBehavior.cs Normal file
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using BrightSharp.Extensions;
using System.Linq;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
namespace BrightSharp.Diagrams
{
public static class SelectionBehavior
{
public static void Attach(FrameworkElement fe)
{
FrameworkElement selectedControl = null;
Style designerStyle = (Style)Application.Current.FindResource("DesignerItemStyle");
if (fe is Panel)
{
var fePanel = (Panel)fe;
fe.PreviewMouseLeftButtonDown += (s, e) =>
{
if (e.Source is DependencyObject)
{
var clickedElement = ((DependencyObject)e.OriginalSource).GetAncestors<ContentControl>().FirstOrDefault(el => el.Style == designerStyle && WpfExtensions.GetItemsPanel(el.GetParent(true)) == fe);
if (clickedElement == null)
{
foreach (DependencyObject item in fePanel.Children)
{
Selector.SetIsSelected(item, false);
}
selectedControl = null;
return;
}
foreach (var control in fePanel.Children.OfType<FrameworkElement>())
{
if (ProcessControl(control, clickedElement, ref selectedControl))
{
if (selectedControl is ContentControl cc && cc.Content is ButtonBase)
{
e.Handled = true;
return;
}
}
}
}
};
}
else if (fe is ItemsControl)
{
var feItemsControl = (ItemsControl)fe;
fe.PreviewMouseLeftButtonDown += (s, e) =>
{
if (e.Source is DependencyObject)
{
var clickedElement = ((DependencyObject)e.Source).GetAncestors<ContentControl>().FirstOrDefault(el => el.Style == designerStyle && el.Parent == fe);
if (clickedElement == null)
{
foreach (DependencyObject item in feItemsControl.Items)
{
Selector.SetIsSelected(item, false);
}
selectedControl = null;
return;
}
foreach (var control in feItemsControl.Items.OfType<FrameworkElement>())
{
if (ProcessControl(control, clickedElement, ref selectedControl))
{
if (selectedControl is ContentControl cc && cc.Content is ButtonBase)
{
e.Handled = true;
return;
}
}
}
}
};
}
}
private static bool ProcessControl(FrameworkElement control, FrameworkElement clickedElement, ref FrameworkElement selectedControl)
{
if (control == clickedElement && control != selectedControl)
{
if (selectedControl != null)
{
Selector.SetIsSelected(selectedControl, false);
}
Selector.SetIsSelected(control, true);
selectedControl = control;
return true;
}
return false;
}
}
}