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using System;
using AppKit;
using Foundation;
using Xamarin.PropertyEditing.ViewModels;
namespace Xamarin.PropertyEditing.Mac
{
internal abstract class PropertyEditorControl
: NSView, IEditorView
{
protected PropertyEditorControl (IHostResourceProvider hostResources)
{
if (hostResources == null)
throw new ArgumentNullException (nameof (hostResources));
HostResources = hostResources;
}
public IHostResourceProvider HostResources
{
get;
}
public string Label { get; set; }
public abstract NSView FirstKeyView { get; }
public abstract NSView LastKeyView { get; }
public NSTableView TableView { get; set; }
public const int DefaultControlHeight = 24;
public const int DefaultFontSize = 11;
public const int DefaultPropertyLabelFontSize = 11;
public const int DefaultDescriptionLabelFontSize = 9;
public const string DefaultFontName = ".AppleSystemUIFont";
public const float DefaultButtonWidth = 70f;
public virtual bool IsDynamicallySized => false;
PropertyViewModel viewModel;
public PropertyViewModel ViewModel {
get { return this.viewModel; }
set {
if (this.ViewModel == value)
return;
PropertyViewModel oldModel = this.viewModel;
if (oldModel != null) {
oldModel.PropertyChanged -= OnPropertyChanged;
}
this.viewModel = value;
OnViewModelChanged (oldModel);
if (this.viewModel != null) {
this.viewModel.PropertyChanged += OnPropertyChanged;
}
}
}
EditorViewModel IEditorView.ViewModel
{
get { return this.ViewModel; }
set { ViewModel = (PropertyViewModel)value; }
}
NSView INativeContainer.NativeView => this;
public virtual bool NeedsPropertyButton => true;
/// <remarks>You should treat the implementation of this as static.</remarks>
public virtual nint GetHeight (EditorViewModel vm)
{
return 24;
}
protected virtual void UpdateValue ()
{
}
protected virtual void OnViewModelChanged (PropertyViewModel oldModel)
{
if (ViewModel != null) {
SetEnabled ();
UpdateValue ();
UpdateAccessibilityValues ();
}
}
protected virtual void OnPropertyChanged (object sender, System.ComponentModel.PropertyChangedEventArgs e)
{
if (e.PropertyName == "Value") {
UpdateValue ();
}
}
protected virtual void SetEnabled ()
{
}
protected virtual void UpdateAccessibilityValues ()
{
}
protected virtual void AppearanceChanged ()
{
}
public sealed override void ViewDidChangeEffectiveAppearance ()
{
base.ViewDidChangeEffectiveAppearance ();
AppearanceChanged ();
}
public void OnNextResponderRequested (bool reverse)
{
if (TableView != null) {
var modifier = reverse ? -1 : 1;
nint row = TableView.RowForView (this) + modifier;
NSView view;
PropertyEditorControl ctrl = null;
var rowCount = TableView.RowCount;
for (; reverse ? row > 0 : row < rowCount; row += modifier) {
view = TableView.GetView (0, row, makeIfNecessary: false);
if (view is PropertyEditorControl pec) { // This is to include the CategoryContainer
ctrl = pec;
} else {
ctrl = (view as EditorContainer)?.EditorView?.NativeView as PropertyEditorControl;
}
if (ctrl?.viewModel != null && !ctrl.viewModel.IsInputEnabled) {
ctrl = null;
}
if (ctrl != null) {
var targetView = reverse ? ctrl.LastKeyView : ctrl.FirstKeyView;
Window?.MakeFirstResponder (targetView);
return;
} else if (row == 0 && view is PanelHeaderEditorControl header) {
Window?.MakeFirstResponder (header);
return;
}
}
}
}
}
internal abstract class PropertyEditorControl<TViewModel>
: PropertyEditorControl
where TViewModel : PropertyViewModel
{
public PropertyEditorControl (IHostResourceProvider hostResources)
: base (hostResources)
{
}
internal new TViewModel ViewModel
{
get { return (TViewModel)base.ViewModel; }
set { base.ViewModel = value; }
}
}
}
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