tools/AasxPackageExplorer/sources/AasxWpfControlLibrary/DiplayVisualAasxElements.xaml.cs - basyx/basyx - Git at Google

 using Logging;
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
 using System.ComponentModel;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 using System.Windows;
 using System.Windows.Controls;
 using System.Windows.Data;
 using System.Windows.Documents;
 using System.Windows.Input;
 using System.Windows.Media;
 using System.Windows.Media.Imaging;
 using System.Windows.Navigation;
 using System.Windows.Shapes;

 using AdminShellNS;

 /* Copyright (c) 2018-2019 Festo AG & Co. KG <https://www.festo.com/net/de_de/Forms/web/contact_international>, author: Michael Hoffmeister
 This software is licensed under the Eclipse Public License - v 2.0 (EPL-2.0) (see https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.txt).
 The browser functionality is under the cefSharp license (see https://raw.githubusercontent.com/cefsharp/CefSharp/master/LICENSE).
 The JSON serialization is under the MIT license (see https://github.com/JamesNK/Newtonsoft.Json/blob/master/LICENSE.md). */

 namespace AasxPackageExplorer
 {

     /// <summary>
     /// Interaktionslogik für DiplayAasxElements.xaml
     /// </summary>
     public partial class DiplayVisualAasxElements : UserControl
     {
         private List<VisualElementGeneric> displayedTreeViewLines = new List<VisualElementGeneric>();
         private TreeViewLineCache treeViewLineCache = null;

         #region Public events and properties
         //
         // Public events and properties
         //

         public event EventHandler SelectedItemChanged = null;

         public VisualElementGeneric SelectedItem
         {
             get
             {
                 return tv1.SelectedItem as VisualElementGeneric;
             }
         }

         // Enumerate all the descendants of the visual object.
         static public void EnumVisual(Visual myVisual, object dataObject)
         {
             for (int i = 0; i < VisualTreeHelper.GetChildrenCount(myVisual); i++)
             {
                 // Retrieve child visual at specified index value.
                 Visual childVisual = (Visual)VisualTreeHelper.GetChild(myVisual, i);

                 // Do processing of the child visual object.
                 var tvi = childVisual as TreeViewItem;
                 if (tvi != null && tvi.DataContext != null && tvi.DataContext == dataObject) {
                     tvi.BringIntoView();
                     tvi.IsSelected = true;
                     tvi.Focus();
                     return;
                 }

                 // Enumerate children of the child visual object.
                 EnumVisual(childVisual, dataObject);
             }
         }

         public void Woodoo(object dataObject)
         {
             if (dataObject == null)
                 return;
             // VisualTreeHelper.GetChild(tv1, )
             displayedTreeViewLines[0].IsSelected = false;
             EnumVisual(tv1, dataObject);
 /*
             TreeViewItem tvItem = (TreeViewItem)tv1
                           .ItemContainerGenerator
                           .ContainerFromItem(dataObject);
             tvItem.Focus();
 */
             tv1.UpdateLayout();
         }

         /// <summary>
         /// Activates the caching of the "expanded" states of the tree, even if the tree is multiple
         /// times rebuilt via <code>RebuildAasxElements</code>.
         /// </summary>
         public void ActivateElementStateCache ()
         {
             this.treeViewLineCache = new TreeViewLineCache();
         }

         public new Brush Background
         {
             get
             {
                 return tv1.Background;
             }
             set
             {
                 tv1.Background = value;
             }
         }

         #endregion

         #region XAML
         //
         // XAML / UI
         //

         public DiplayVisualAasxElements()
         {
             InitializeComponent();
         }

         private void tv1_RequestBringIntoView(object sender, RequestBringIntoViewEventArgs e)
         {
             base.BringIntoView();
             // e.Handled = true;

             var scrollViewer = tv1.Template.FindName("_tv_scrollviewer_", tv1) as ScrollViewer;
             if (scrollViewer != null)
                 Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Loaded, (Action)(() => scrollViewer.ScrollToLeftEnd()));
         }

         private void tv1_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
         {
             if (sender != tv1)
                 return;
             if (SelectedItemChanged != null)
                 SelectedItemChanged(this, e);
         }

         public void Refresh()
         {
             tv1.Items.Refresh();
             tv1.UpdateLayout();
         }

         public void ExpandOnlyBranchWithin(VisualElementGeneric node)
         {
             // make a list of all top-level nodes
             var list = new List<VisualElementGeneric>();
             foreach (var dl in displayedTreeViewLines)
                 dl.CollectListOfTopLevelNodes(list);
             // contract ALL nodes
             foreach (var tl in list)
                 tl.ForAllDescendents((x) => { (x as VisualElementGeneric).IsExpanded = false; });
             // expand all nodes having descendent
             foreach (var tl in list)
                 if (tl.CheckIfDescendent(node))
                     tl.ForAllDescendents((x) => { (x as VisualElementGeneric).IsExpanded = true; });
         }

         #endregion

         #region Elememt view drawing / handling

         //
         // Element View Drawing
         //

         private VisualElementGeneric SearchInListOfVisualElements (VisualElementGeneric tvl, object dataObject)
         {
             if (tvl == null || dataObject == null)
                 return null;
             if (tvl.GetMainDataObject() == dataObject)
                 return tvl;
             foreach (var mem in tvl.Members) {
                 var x = SearchInListOfVisualElements(mem, dataObject);
                 if (x != null)
                     return x;
             }
             return null;
         }

         public VisualElementGeneric SearchVisualElementOnMainDataObject(object dataObject)
         {
             if (displayedTreeViewLines == null)
                 return null;
             foreach (var tvl in displayedTreeViewLines)
             {
                 var x = SearchInListOfVisualElements(tvl, dataObject);
                 if (x != null)
                     return x;
             }
             return null;
         }


         /// <summary>
         /// Return true, if <code>mem</code> has to be deleted, because not in filter.
         /// </summary>
         /// <param name="mem"></param>
         /// <param name="fullFilterElementName"></param>
         /// <returns></returns>
         public bool FilterLeafsOfVisualElements(VisualElementGeneric mem, string fullFilterElementName)
         {
             if (fullFilterElementName == null)
                 return (false);
             fullFilterElementName = fullFilterElementName.Trim().ToLower();
             if (fullFilterElementName == "")
                 return (false);

             // has Members -> is not leaf!
             if (mem.Members != null && mem.Members.Count > 0)
             {
                 // go into non-leafs mode -> simply go over list
                 var todel = new List<VisualElementGeneric>();
                 foreach (var x in mem.Members)
                     if (FilterLeafsOfVisualElements(x, fullFilterElementName))
                         todel.Add(x);
                 // delete items on list
                 foreach (var td in todel)
                     mem.Members.Remove(td);
             }
             else
             {
                 // this member is a leaf!!
                 var isIn = false;
                 var mdo = mem.GetMainDataObject();
                 if (mdo != null && mdo is AdminShell.Referable)
                 {
                     var mdoen = (mdo as AdminShell.Referable).GetElementName().Trim().ToLower();
                     isIn = fullFilterElementName.IndexOf(mdoen) >= 0;
                 }
                 if (mdo != null && mdo is AdminShell.Reference)
                 {
                     var mdoen = (mdo as AdminShell.Reference).GetElementName().Trim().ToLower();
                     isIn = fullFilterElementName.IndexOf(mdoen) >= 0;
                 }
                 return !isIn;
             }
             return false;
         }

         public void RebuildAasxElements(
             AdminShell.AdministrationShellEnv env = null,
             AdminShell.PackageEnv package = null,
             AdminShell.PackageEnv[] auxPackages = null, bool editMode = false, string filterElementName = null)
         {
             // clear tree
             displayedTreeViewLines = new List<VisualElementGeneric>();

             // valid?
             if (env != null)
             {

                 // generate lines, add
                 var x = Generators.GenerateVisualElementsFromShellEnv(treeViewLineCache, env, package, editMode, expandMode: 1);
                 foreach (var xx in x)
                     displayedTreeViewLines.Add(xx);

                 // more?
                 if (auxPackages != null)
                     foreach (var aux in auxPackages)
                     {
                         var x2 = Generators.GenerateVisualElementsFromShellEnv(treeViewLineCache, aux.AasEnv, aux, editMode, expandMode: 1);
                         foreach (var xx in x2)
                             displayedTreeViewLines.Add(xx);
                     }

                 // may be filter
                 if (filterElementName != null)
                     foreach (var dtl in displayedTreeViewLines)
                         // it is not likely, that we have to delete on this level, therefore don't care
                         FilterLeafsOfVisualElements(dtl, filterElementName);

                 // any of these lines?
                 if (displayedTreeViewLines.Count < 1)
                 {
                     // emergency
                     displayedTreeViewLines.Add(new VisualElementEnvironmentItem(null /* no parent */, treeViewLineCache, package, env, VisualElementEnvironmentItem.ItemType.EmptySet));
                 }

             }

             // redraw
             tv1.ItemsSource = displayedTreeViewLines;
             tv1.UpdateLayout();

             // select 1st
             if (displayedTreeViewLines.Count > 0)
                 displayedTreeViewLines[0].IsSelected = true;
         }

         #endregion

     }
 }
	using Logging;
	using System;
	using System.Collections.Generic;
	using System.Collections.ObjectModel;
	using System.ComponentModel;
	using System.Linq;
	using System.Text;
	using System.Threading.Tasks;
	using System.Windows;
	using System.Windows.Controls;
	using System.Windows.Data;
	using System.Windows.Documents;
	using System.Windows.Input;
	using System.Windows.Media;
	using System.Windows.Media.Imaging;
	using System.Windows.Navigation;
	using System.Windows.Shapes;

	using AdminShellNS;

	/* Copyright (c) 2018-2019 Festo AG & Co. KG <https://www.festo.com/net/de_de/Forms/web/contact_international>, author: Michael Hoffmeister
	This software is licensed under the Eclipse Public License - v 2.0 (EPL-2.0) (see https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.txt).
	The browser functionality is under the cefSharp license (see https://raw.githubusercontent.com/cefsharp/CefSharp/master/LICENSE).
	The JSON serialization is under the MIT license (see https://github.com/JamesNK/Newtonsoft.Json/blob/master/LICENSE.md). */

	namespace AasxPackageExplorer
	{

	/// <summary>
	/// Interaktionslogik für DiplayAasxElements.xaml
	/// </summary>
	public partial class DiplayVisualAasxElements : UserControl
	{
	private List<VisualElementGeneric> displayedTreeViewLines = new List<VisualElementGeneric>();
	private TreeViewLineCache treeViewLineCache = null;

	#region Public events and properties
	//
	// Public events and properties
	//

	public event EventHandler SelectedItemChanged = null;

	public VisualElementGeneric SelectedItem
	{
	get
	{
	return tv1.SelectedItem as VisualElementGeneric;
	}
	}

	// Enumerate all the descendants of the visual object.
	static public void EnumVisual(Visual myVisual, object dataObject)
	{
	for (int i = 0; i < VisualTreeHelper.GetChildrenCount(myVisual); i++)
	{
	// Retrieve child visual at specified index value.
	Visual childVisual = (Visual)VisualTreeHelper.GetChild(myVisual, i);

	// Do processing of the child visual object.
	var tvi = childVisual as TreeViewItem;
	if (tvi != null && tvi.DataContext != null && tvi.DataContext == dataObject) {
	tvi.BringIntoView();
	tvi.IsSelected = true;
	tvi.Focus();
	return;
	}

	// Enumerate children of the child visual object.
	EnumVisual(childVisual, dataObject);
	}
	}

	public void Woodoo(object dataObject)
	{
	if (dataObject == null)
	return;
	// VisualTreeHelper.GetChild(tv1, )
	displayedTreeViewLines[0].IsSelected = false;
	EnumVisual(tv1, dataObject);
	/*
	TreeViewItem tvItem = (TreeViewItem)tv1
	.ItemContainerGenerator
	.ContainerFromItem(dataObject);
	tvItem.Focus();
	*/
	tv1.UpdateLayout();
	}

	/// <summary>
	/// Activates the caching of the "expanded" states of the tree, even if the tree is multiple
	/// times rebuilt via <code>RebuildAasxElements</code>.
	/// </summary>
	public void ActivateElementStateCache ()
	{
	this.treeViewLineCache = new TreeViewLineCache();
	}

	public new Brush Background
	{
	get
	{
	return tv1.Background;
	}
	set
	{
	tv1.Background = value;
	}
	}

	#endregion

	#region XAML
	//
	// XAML / UI
	//

	public DiplayVisualAasxElements()
	{
	InitializeComponent();
	}

	private void tv1_RequestBringIntoView(object sender, RequestBringIntoViewEventArgs e)
	{
	base.BringIntoView();
	// e.Handled = true;

	var scrollViewer = tv1.Template.FindName("_tv_scrollviewer_", tv1) as ScrollViewer;
	if (scrollViewer != null)
	Dispatcher.BeginInvoke(System.Windows.Threading.DispatcherPriority.Loaded, (Action)(() => scrollViewer.ScrollToLeftEnd()));
	}

	private void tv1_SelectedItemChanged(object sender, RoutedPropertyChangedEventArgs<object> e)
	{
	if (sender != tv1)
	return;
	if (SelectedItemChanged != null)
	SelectedItemChanged(this, e);
	}

	public void Refresh()
	{
	tv1.Items.Refresh();
	tv1.UpdateLayout();
	}

	public void ExpandOnlyBranchWithin(VisualElementGeneric node)
	{
	// make a list of all top-level nodes
	var list = new List<VisualElementGeneric>();
	foreach (var dl in displayedTreeViewLines)
	dl.CollectListOfTopLevelNodes(list);
	// contract ALL nodes
	foreach (var tl in list)
	tl.ForAllDescendents((x) => { (x as VisualElementGeneric).IsExpanded = false; });
	// expand all nodes having descendent
	foreach (var tl in list)
	if (tl.CheckIfDescendent(node))
	tl.ForAllDescendents((x) => { (x as VisualElementGeneric).IsExpanded = true; });
	}

	#endregion

	#region Elememt view drawing / handling

	//
	// Element View Drawing
	//

	private VisualElementGeneric SearchInListOfVisualElements (VisualElementGeneric tvl, object dataObject)
	{
	if (tvl == null \|\| dataObject == null)
	return null;
	if (tvl.GetMainDataObject() == dataObject)
	return tvl;
	foreach (var mem in tvl.Members) {
	var x = SearchInListOfVisualElements(mem, dataObject);
	if (x != null)
	return x;
	}
	return null;
	}

	public VisualElementGeneric SearchVisualElementOnMainDataObject(object dataObject)
	{
	if (displayedTreeViewLines == null)
	return null;
	foreach (var tvl in displayedTreeViewLines)
	{
	var x = SearchInListOfVisualElements(tvl, dataObject);
	if (x != null)
	return x;
	}
	return null;
	}


	/// <summary>
	/// Return true, if <code>mem</code> has to be deleted, because not in filter.
	/// </summary>
	/// <param name="mem"></param>
	/// <param name="fullFilterElementName"></param>
	/// <returns></returns>
	public bool FilterLeafsOfVisualElements(VisualElementGeneric mem, string fullFilterElementName)
	{
	if (fullFilterElementName == null)
	return (false);
	fullFilterElementName = fullFilterElementName.Trim().ToLower();
	if (fullFilterElementName == "")
	return (false);

	// has Members -> is not leaf!
	if (mem.Members != null && mem.Members.Count > 0)
	{
	// go into non-leafs mode -> simply go over list
	var todel = new List<VisualElementGeneric>();
	foreach (var x in mem.Members)
	if (FilterLeafsOfVisualElements(x, fullFilterElementName))
	todel.Add(x);
	// delete items on list
	foreach (var td in todel)
	mem.Members.Remove(td);
	}
	else
	{
	// this member is a leaf!!
	var isIn = false;
	var mdo = mem.GetMainDataObject();
	if (mdo != null && mdo is AdminShell.Referable)
	{
	var mdoen = (mdo as AdminShell.Referable).GetElementName().Trim().ToLower();
	isIn = fullFilterElementName.IndexOf(mdoen) >= 0;
	}
	if (mdo != null && mdo is AdminShell.Reference)
	{
	var mdoen = (mdo as AdminShell.Reference).GetElementName().Trim().ToLower();
	isIn = fullFilterElementName.IndexOf(mdoen) >= 0;
	}
	return !isIn;
	}
	return false;
	}

	public void RebuildAasxElements(
	AdminShell.AdministrationShellEnv env = null,
	AdminShell.PackageEnv package = null,
	AdminShell.PackageEnv[] auxPackages = null, bool editMode = false, string filterElementName = null)
	{
	// clear tree
	displayedTreeViewLines = new List<VisualElementGeneric>();

	// valid?
	if (env != null)
	{

	// generate lines, add
	var x = Generators.GenerateVisualElementsFromShellEnv(treeViewLineCache, env, package, editMode, expandMode: 1);
	foreach (var xx in x)
	displayedTreeViewLines.Add(xx);

	// more?
	if (auxPackages != null)
	foreach (var aux in auxPackages)
	{
	var x2 = Generators.GenerateVisualElementsFromShellEnv(treeViewLineCache, aux.AasEnv, aux, editMode, expandMode: 1);
	foreach (var xx in x2)
	displayedTreeViewLines.Add(xx);
	}

	// may be filter
	if (filterElementName != null)
	foreach (var dtl in displayedTreeViewLines)
	// it is not likely, that we have to delete on this level, therefore don't care
	FilterLeafsOfVisualElements(dtl, filterElementName);

	// any of these lines?
	if (displayedTreeViewLines.Count < 1)
	{
	// emergency
	displayedTreeViewLines.Add(new VisualElementEnvironmentItem(null /* no parent */, treeViewLineCache, package, env, VisualElementEnvironmentItem.ItemType.EmptySet));
	}

	}

	// redraw
	tv1.ItemsSource = displayedTreeViewLines;
	tv1.UpdateLayout();

	// select 1st
	if (displayedTreeViewLines.Count > 0)
	displayedTreeViewLines[0].IsSelected = true;
	}

	#endregion

	}
	}