private bool ExpandToSelection(SfTreeView tree, TreeViewNodeCollection nodes, object model)
{
foreach (var node in nodes)
{
if ((node.Content as FileManager).ItemName == (model as FileManager).ItemName)
{
var parent = node.ParentNode;
while (parent != null)
{
tree.ExpandNode(parent);
parent = parent.ParentNode;
}
return(true);
}
}
foreach (var node in nodes)
{
if (node.HasChildNodes)
{
var found = ExpandToSelection(tree, node.ChildNodes, model);
if (found)
{
return(true);
}
}
}
return(false);
}
protected override void OnAttachedTo(ContentPage bindable)
{
TreeView = bindable.FindByName <SfTreeView>("treeView");
Button = bindable.FindByName <Button>("button");
Button.Clicked += Button_Clicked;
base.OnAttachedTo(bindable);
}
protected override void OnDetachingFrom(ContentPage bindable)
{
Button.Clicked -= BringIntoView_Clicked;
Button = null;
TreeView = null;
base.OnDetachingFrom(bindable);
}
public void Dispose()
{
if (treeView != null)
{
treeView.Dispose();
treeView = null;
}
}
public TreeGettingStarted()
{
treeView = new SfTreeView();
viewModel = new FoodSpeciesViewModel();
treeView.AutoExpandMode = AutoExpandMode.AllNodesExpanded;
treeView.ExpandActionTarget = ExpandActionTarget.Node;
treeView.ChildPropertyName = "Species";
treeView.ItemsSource = viewModel.SpeciesType;
treeView.Adapter = new GettingStartedAdapter();
this.AddSubview(treeView);
}
public override Android.Views.View GetSampleContent(Android.Content.Context context)
{
treeView = new SfTreeView(context, null);
viewModel = new FoodSpeciesViewModel();
treeView.FullRowSelect = true;
treeView.AutoExpandMode = AutoExpandMode.AllNodesExpanded;
treeView.ExpandActionTarget = ExpandActionTarget.Node;
treeView.ChildPropertyName = "Species";
treeView.ItemsSource = viewModel.SpeciesType;
treeView.Adapter = new GettingStartedAdapter();
return(treeView);
}
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Set our view from the "main" layout resource
SetContentView(Resource.Layout.activity_main);
SfTreeView treeView = FindViewById <SfTreeView>(Resource.Id.sfTreeView1);
MusicInfoRepository viewModel = new MusicInfoRepository();
treeView.LoadOnDemand += TreeView_LoadOnDemandEvent;
treeView.ItemsSource = viewModel.Menu;
treeView.Adapter = new NodeImageAdapter();
}
public override Android.Views.View GetSampleContent(Android.Content.Context context)
{
treeView = new SfTreeView(context, null);
viewModel = new FileManagerViewModel();
treeView.Indentation = 20;
treeView.ExpanderWidth = 40;
treeView.ItemHeight = 45;
treeView.AutoExpandMode = AutoExpandMode.AllNodesExpanded;
treeView.ChildPropertyName = "SubFolder";
treeView.ItemsSource = viewModel.Folders;
treeView.Adapter = new NodeImageAdapter();
return(treeView);
}
public NodeWithImage()
{
treeView = new SfTreeView();
viewModel = new FileManagerViewModel();
treeView.Indentation = 20;
treeView.ExpanderWidth = 40;
treeView.ItemHeight = 40;
treeView.AutoExpandMode = AutoExpandMode.AllNodesExpanded;
treeView.ChildPropertyName = "SubFolder";
treeView.ItemsSource = viewModel.Folders;
treeView.Adapter = new NodeImageAdapter();
this.AddSubview(treeView);
}
public NodeImageView(Context context, SfTreeView treeView) : base(context)
{
view = treeView;
this.Orientation = Orientation.Horizontal;
label1 = new ContentLabel(context);
label1.Gravity = GravityFlags.CenterVertical;
if (view.LayoutDirection == Android.Views.LayoutDirection.Rtl)
{
label1.TextDirection = TextDirection.Rtl;
}
imageIcon = new ImageViewExt(context);
this.AddView(imageIcon);
this.AddView(label1);
}
public TreeTemplate()
{
treeView = new SfTreeView();
viewModel = new MailFolderViewModel();
treeView.FullRowSelect = true;
treeView.Indentation = 20;
treeView.ExpanderWidth = 0;
treeView.ItemHeight = 40;
treeView.AutoExpandMode = AutoExpandMode.AllNodesExpanded;
treeView.ChildPropertyName = "SubFolder";
treeView.ItemsSource = viewModel.Folders;
treeView.Adapter = new TemplateAdapter();
this.AddSubview(treeView);
}
public override Android.Views.View GetSampleContent(Android.Content.Context context)
{
treeView = new SfTreeView(context, null);
viewModel = new CountriesViewModel();
treeView.Indentation = 20;
treeView.ExpanderWidth = 40;
treeView.ItemHeight = 40;
treeView.SelectionMode = SelectionMode.Multiple;
treeView.AutoExpandMode = AutoExpandMode.RootNodesExpanded;
treeView.ChildPropertyName = "States";
treeView.ItemsSource = viewModel.CountriesInfo;
treeView.Adapter = new SelectionAdapter();
treeView.SelectedItems = viewModel.SelectedCountries;
return(treeView);
}
protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Set our view from the "main" layout resource
SetContentView(Resource.Layout.activity_main);
SfTreeView treeView = FindViewById <SfTreeView>(Resource.Id.sfTreeView1);
FileManagerViewModel viewModel = new FileManagerViewModel();
// You can also change layout direction of treeview by changing device layout direction
treeView.LayoutDirection = Android.Views.LayoutDirection.Rtl;
treeView.AutoExpandMode = AutoExpandMode.RootNodesExpanded;
treeView.ChildPropertyName = "SubFiles";
treeView.ItemsSource = viewModel.Folders;
treeView.Adapter = new CustomAdapter();
}
private void ExecuteClickAction(object obj)
{
var loadingBtn = obj as Button;
loadingBtn.Visibility = Visibility.Collapsed;
BackgroundWorker backgroundWorker = new BackgroundWorker();
backgroundWorker.DoWork += BackgroundWorker_DoWork;
backgroundWorker.RunWorkerCompleted += BackgroundWorker_RunWorkerCompleted;
backgroundWorker.RunWorkerAsync();
treeView = Application.Current.MainWindow.FindName("treeView") as SfTreeView;
busyIndicator = Application.Current.MainWindow.FindName("loadingIndicator") as SfBusyIndicator;
busyIndicator.IsBusy = true;
}
public NodeImageView(SfTreeView treeView)
{
view = treeView;
label1 = new UILabel();
if (GetUserInterfaceLayoutDirection(view.SemanticContentAttribute) == UIUserInterfaceLayoutDirection.RightToLeft)
{
label1.TextAlignment = UITextAlignment.Right;
}
imageIcon = new UIImageView();
imageIcon.ClipsToBounds = true;
imageIcon.AdjustsImageSizeForAccessibilityContentSizeCategory = true;
imageIcon.InsetsLayoutMarginsFromSafeArea = true;
this.AddSubview(imageIcon);
this.AddSubview(label1);
}
public override void ViewDidLoad()
{
base.ViewDidLoad();
View.BackgroundColor = UIColor.White;
SfTreeView treeView = new SfTreeView(View.Bounds);
treeView.SemanticContentAttribute = UISemanticContentAttribute.ForceRightToLeft;
FileManagerViewModel viewModel = new FileManagerViewModel();
treeView.AutoExpandMode = Syncfusion.TreeView.Engine.AutoExpandMode.RootNodesExpanded;
treeView.ChildPropertyName = "SubFiles";
treeView.ItemsSource = viewModel.Folders;
treeView.Adapter = new NodeImageAdapter();
// Perform any additional setup after loading the view
Add(treeView);
}
public TreeSelection()
{
treeView = new SfTreeView();
viewModel = new CountriesViewModel();
treeView.Indentation = 20;
treeView.ExpanderWidth = 40;
treeView.ItemHeight = 40;
treeView.SelectionMode = SelectionMode.Multiple;
treeView.AutoExpandMode = AutoExpandMode.AllNodesExpanded;
treeView.ChildPropertyName = "States";
treeView.ItemsSource = viewModel.CountriesInfo;
treeView.Adapter = new SelectionAdapter();
treeView.SelectedItems = viewModel.SelectedCountries;
this.AddSubview(treeView);
this.OptionView = option;
}
protected override void OnAttachedTo(ContentPage bindable)
{
TreeView = bindable.FindByName <SfTreeView>("treeView");
TreeView.Loaded += TreeView_Loaded;
base.OnAttachedTo(bindable);
}
protected override void OnAttachedTo(ContentPage bindable)
{
base.OnAttachedTo(bindable);
treeView = bindable.FindByName <SfTreeView>("treeView");
treeView.ItemHolding += TreeView_ItemHolding;
}
protected override void OnDetachingFrom(ContentPage bindable)
{
TreeView.Loaded -= TreeView_Loaded;
TreeView = null;
base.OnDetachingFrom(bindable);
}
public GettingStatred()
{
InitializeComponent();
TreeView = treeView;
}