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using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using AppKit;
using Foundation;
using Xamarin.PropertyEditing.ViewModels;
namespace Xamarin.PropertyEditing.Mac
{
internal class NumericEditorControl<T>
: PropertyEditorControl<NumericPropertyViewModel<T>>
{
public NumericEditorControl (IHostResourceProvider hostResources)
: base (hostResources)
{
base.TranslatesAutoresizingMaskIntoConstraints = false;
NumericEditor = new NumericSpinEditor<T> (hostResources)
{
ProxyResponder = new RowProxyResponder (this, ProxyRowType.SingleView)
};
NumericEditor.ValueChanged += OnValueChanged;
var t = typeof (T);
if (t.Name == PropertyViewModel<T>.NullableName) {
this.underlyingType = Nullable.GetUnderlyingType (t);
t = this.underlyingType;
}
TypeCode code = Type.GetTypeCode (t);
switch (code) {
case TypeCode.Double:
case TypeCode.Single:
case TypeCode.Decimal:
NumberStyle = NSNumberFormatterStyle.Decimal;
Formatter.UsesGroupingSeparator = false;
Formatter.MaximumFractionDigits = 15;
break;
default:
NumberStyle = NSNumberFormatterStyle.None;
break;
}
AddSubview (NumericEditor);
this.editorRightConstraint = NSLayoutConstraint.Create (NumericEditor, NSLayoutAttribute.Right, NSLayoutRelation.Equal, this, NSLayoutAttribute.Right, 1f, 0);
this.AddConstraints (new[] {
NSLayoutConstraint.Create (NumericEditor, NSLayoutAttribute.CenterY, NSLayoutRelation.Equal, this, NSLayoutAttribute.CenterY, 1f, 0),
NSLayoutConstraint.Create (NumericEditor, NSLayoutAttribute.Left, NSLayoutRelation.Equal, this, NSLayoutAttribute.Left, 1, 0),
this.editorRightConstraint,
NSLayoutConstraint.Create (NumericEditor, NSLayoutAttribute.Height, NSLayoutRelation.Equal, this, NSLayoutAttribute.Height, 1, -6),
});
}
protected NumericSpinEditor<T> NumericEditor { get; set; }
protected NSNumberFormatter Formatter {
get { return NumericEditor.Formatter; }
set { NumericEditor.Formatter = value; }
}
public override NSView FirstKeyView => NumericEditor;
public override NSView LastKeyView => NumericEditor.DecrementButton;
private bool CanEnable => ViewModel.Property.CanWrite && (((ViewModel.InputMode != null) && !ViewModel.InputMode.IsSingleValue) || (this.inputModePopup == null));
protected NSNumberFormatterStyle NumberStyle {
get {
return NumericEditor.NumberStyle; }
set {
NumericEditor.NumberStyle = value;
}
}
protected override void SetEnabled ()
{
NumericEditor.Enabled = CanEnable;
if (this.inputModePopup != null)
this.inputModePopup.Enabled = ViewModel.Property.CanWrite;
}
protected virtual void OnValueChanged (object sender, EventArgs e)
{
var t = typeof (T);
if (this.underlyingType != null)
t = this.underlyingType;
ViewModel.Value = (T)Convert.ChangeType (NumericEditor.Value, t);
}
protected override void UpdateValue()
{
if (this.underlyingType != null) {
NumericEditor.StringValue = ViewModel.Value == null ? string.Empty : ViewModel.Value.ToString ();
NumericEditor.Enabled = CanEnable;
if (this.inputModePopup != null)
this.inputModePopup.SelectItem ((ViewModel.InputMode == null) ? string.Empty : ViewModel.InputMode.Identifier);
} else {
NumericEditor.Value = (double)Convert.ChangeType (ViewModel.Value, typeof (double));
if (this.inputModePopup != null)
this.inputModePopup.SelectItem (-1);
}
}
protected override void UpdateAccessibilityValues ()
{
NumericEditor.AccessibilityEnabled = NumericEditor.Enabled;
NumericEditor.AccessibilityTitle = string.Format (Properties.Resources.AccessibilityNumeric, ViewModel.Property.Name);
if (this.inputModePopup != null) {
this.inputModePopup.AccessibilityEnabled = this.inputModePopup.Enabled;
this.inputModePopup.AccessibilityTitle = string.Format (Properties.Resources.AccessibilityInputModeEditor, ViewModel.Property.Name);
}
}
protected override void OnViewModelChanged (PropertyViewModel oldModel)
{
base.OnViewModelChanged (oldModel);
if (ViewModel == null)
return;
this.editorRightConstraint.Active = !ViewModel.HasInputModes;
if (ViewModel.HasInputModes) {
if (this.inputModePopup == null) {
this.inputModePopup = new FocusablePopUpButton {
ControlSize = NSControlSize.Small,
Font = NSFont.SystemFontOfSize (NSFont.SystemFontSizeForControlSize (NSControlSize.Small)),
Menu = new NSMenu (),
TranslatesAutoresizingMaskIntoConstraints = false,
};
this.inputModePopup.Activated += (o, e) => {
var popupButton = o as NSPopUpButton;
ViewModel.InputMode = this.viewModelInputModes.FirstOrDefault (im => im.Identifier == popupButton.Title);
};
AddSubview (this.inputModePopup);
this.editorInputModeConstraint = NSLayoutConstraint.Create (NumericEditor, NSLayoutAttribute.Right, NSLayoutRelation.Equal, this.inputModePopup, NSLayoutAttribute.Left, 1, -4);
AddConstraints (new[] {
this.editorInputModeConstraint,
NSLayoutConstraint.Create (this.inputModePopup, NSLayoutAttribute.CenterY, NSLayoutRelation.Equal, this, NSLayoutAttribute.CenterY, 1f, 0f),
NSLayoutConstraint.Create (this.inputModePopup, NSLayoutAttribute.Right, NSLayoutRelation.Equal, this, NSLayoutAttribute.Right, 1f, 0f),
NSLayoutConstraint.Create (this.inputModePopup, NSLayoutAttribute.Width, NSLayoutRelation.Equal, 1f, DefaultButtonWidth),
});
}
this.inputModePopup.Menu.RemoveAllItems ();
this.viewModelInputModes = ViewModel.InputModes;
foreach (InputMode item in this.viewModelInputModes) {
this.inputModePopup.Menu.AddItem (new NSMenuItem (item.Identifier));
}
}
// If we are reusing the control we'll have to hid the inputMode if this doesn't have InputMode.
if (this.inputModePopup != null) {
this.inputModePopup.Hidden = !ViewModel.HasInputModes;
this.editorInputModeConstraint.Active = ViewModel.HasInputModes;
UpdateAccessibilityValues ();
}
SetEnabled ();
}
private Type underlyingType;
internal NSPopUpButton inputModePopup;
private IReadOnlyList<InputMode> viewModelInputModes;
private readonly NSLayoutConstraint editorRightConstraint;
private NSLayoutConstraint editorInputModeConstraint;
}
}
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