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using System;
using System.ComponentModel;
using AppKit;
using CoreGraphics;
using Foundation;
using Xamarin.PropertyEditing.ViewModels;
namespace Xamarin.PropertyEditing.Mac
{
internal class PropertyList
: NSView
{
internal const string PropertyEditorColId = "PropertyEditors";
public PropertyList ()
{
this.propertyTable = new FirstResponderOutlineView {
AccessibilityEnabled = true,
AccessibilityTitle = Properties.Resources.AccessibilityPropertyTable,
IndentationPerLevel = 0,
SelectionHighlightStyle = NSTableViewSelectionHighlightStyle.None,
HeaderView = null,
IntercellSpacing = new CGSize (0, 0)
};
var propertyEditors = new NSTableColumn (PropertyEditorColId);
this.propertyTable.AddColumn (propertyEditors);
this.scrollView = new NSScrollView {
AutoresizingMask = NSViewResizingMask.WidthSizable | NSViewResizingMask.HeightSizable,
HasHorizontalScroller = false,
HasVerticalScroller = true,
};
this.scrollView.DocumentView = this.propertyTable;
AddSubview (this.scrollView);
}
public bool ShowHeader
{
get { return this.showHeader; }
set
{
if (this.showHeader == value)
return;
this.showHeader = value;
if (this.dataSource != null) {
this.dataSource.ShowHeader = value;
this.propertyTable.ReloadData ();
}
}
}
public PanelViewModel ViewModel
{
get { return this.viewModel; }
set
{
if (this.viewModel != null) {
this.viewModel.ArrangedPropertiesChanged -= OnPropertiesChanged;
this.propertyTable.Delegate = null;
this.propertyTable.DataSource = null;
}
this.viewModel = value;
if (this.viewModel != null) {
this.viewModel.ArrangedPropertiesChanged += OnPropertiesChanged;
this.dataSource = new PropertyTableDataSource (this.viewModel) { ShowHeader = ShowHeader };
this.dataDelegate = new PropertyTableDelegate (HostResourceProvider, this.dataSource);
this.propertyTable.Delegate = this.dataDelegate;
this.propertyTable.DataSource = this.dataSource;
}
}
}
public IHostResourceProvider HostResourceProvider
{
get => this.hostResources;
set
{
if (this.hostResources == value)
return;
if (value == null)
throw new ArgumentNullException (nameof (value), "Cannot set HostResourceProvider to null");
this.hostResources = value;
UpdateResourceProvider ();
}
}
public sealed override void ViewDidChangeEffectiveAppearance ()
{
base.ViewDidChangeEffectiveAppearance ();
UpdateResourceProvider ();
}
public void UpdateExpansions ()
{
dataDelegate.UpdateExpansions (this.propertyTable);
}
private readonly NSOutlineView propertyTable;
private readonly NSScrollView scrollView;
private IHostResourceProvider hostResources;
private PropertyTableDataSource dataSource;
private PropertyTableDelegate dataDelegate;
private PanelViewModel viewModel;
private bool showHeader = true;
private class FirstResponderOutlineView : NSOutlineView
{
private bool tabbedIn;
public override bool ValidateProposedFirstResponder (NSResponder responder, NSEvent forEvent)
{
return true;
}
public override CGRect FrameOfOutlineCellAtRow (nint row) => CGRect.Empty;
public override bool BecomeFirstResponder ()
{
var willBecomeFirstResponder = base.BecomeFirstResponder ();
if (willBecomeFirstResponder) {
if (SelectedRows.Count == 0 && RowCount > 0) {
SelectRow (0, false);
this.tabbedIn = true;
var row = GetRowView ((nint)SelectedRows.FirstIndex, false);
if (row != null) {
return Window.MakeFirstResponder (row.NextValidKeyView);
}
}
}
this.tabbedIn = false;
return willBecomeFirstResponder;
}
public override bool ResignFirstResponder ()
{
var wilResignFirstResponder = base.ResignFirstResponder ();
if (wilResignFirstResponder) {
if (SelectedRows.Count > 0 && !this.tabbedIn) {
DeselectRow ((nint)SelectedRows.FirstIndex);
}
}
return wilResignFirstResponder;
}
}
private void OnPropertiesChanged (object sender, EventArgs e)
{
this.propertyTable.ReloadData ();
}
private void UpdateResourceProvider ()
{
if (this.propertyTable == null || this.hostResources == null)
return;
this.propertyTable.BackgroundColor = this.hostResources.GetNamedColor (NamedResources.PadBackgroundColor);
if (this.propertyTable.Delegate != null)
{
this.propertyTable.Delegate = dataDelegate = new PropertyTableDelegate (HostResourceProvider, this.dataSource);
}
}
}
}
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