94 lines
3.0 KiB
C#
94 lines
3.0 KiB
C#
using Prism.Regions;
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using Syncfusion.UI.Xaml.NavigationDrawer;
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using System;
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using System.Collections.Generic;
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using System.Collections.Specialized;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows;
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namespace FATrace.WPLApp.RegionAdapter
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{
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public class SfNavigationDrawerRegionAdapter : RegionAdapterBase<SfNavigationDrawer>
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{
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public SfNavigationDrawerRegionAdapter(IRegionBehaviorFactory regionBehaviorFactory)
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: base(regionBehaviorFactory)
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{
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}
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protected override void Adapt(IRegion region, SfNavigationDrawer regionTarget)
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{
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{
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//////Old Version
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//if (regionTarget == null)
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// throw new ArgumentNullException(nameof(regionTarget));
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//bool contentIsSet = regionTarget.ContentView != null;
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//contentIsSet = contentIsSet || null != BindingOperations.GetBinding(regionTarget, ContentControl.ContentProperty);
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//if (contentIsSet)
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// throw new InvalidOperationException("ContentControlHasContentException");
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//region.ActiveViews.CollectionChanged += delegate
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//{
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// regionTarget.ContentView = region.ActiveViews.FirstOrDefault();
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//};
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//region.Views.CollectionChanged +=
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//(sender, e) =>
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//{
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// if (e.Action == NotifyCollectionChangedAction.Add && region.ActiveViews.Count() == 0)
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// {
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// region.Activate(e.NewItems[0]);
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// }
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//};
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}
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//New Version
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if (region == null)
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{
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throw new ArgumentNullException(nameof(region));
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}
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if (regionTarget == null)
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{
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throw new ArgumentNullException(nameof(regionTarget));
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}
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// 处理活动视图变化 - 这是界面切换的关键
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region.ActiveViews.CollectionChanged += (s, e) =>
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{
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// 当有视图被激活时，将其设置为ContentView
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if (e.Action == NotifyCollectionChangedAction.Add && e.NewItems != null && e.NewItems.Count > 0)
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{
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regionTarget.ContentView = e.NewItems[0] as FrameworkElement;
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}
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};
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// 处理视图集合变化
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region.Views.CollectionChanged += (s, e) =>
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{
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// 当添加新视图且没有活动视图时，自动激活它
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if (e.Action == NotifyCollectionChangedAction.Add &&
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e.NewItems != null &&
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e.NewItems.Count > 0 &&
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region.ActiveViews.Count() == 0)
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{
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region.Activate(e.NewItems[0]);
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}
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};
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}
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protected override IRegion CreateRegion()
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{
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return new SingleActiveRegion();
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//return new Region();
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}
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}
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}
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