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using System;
using System.Collections;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using AppKit;
using CoreGraphics;
using Foundation;
using Xamarin.PropertyEditing.Mac.Resources;
using Xamarin.PropertyEditing.ViewModels;
namespace Xamarin.PropertyEditing.Mac
{
internal class StringEditorControl
: PropertyEditorControl<PropertyViewModel<string>>
{
private NSTextField stringEditor { get; set; }
private NSLayoutConstraint stringEditorWidthConstraint;
public override NSView FirstKeyView => this.stringEditor;
private NSView lastKeyView;
public override NSView LastKeyView => this.lastKeyView;
internal NSPopUpButton inputModePopup;
private IReadOnlyList<InputMode> viewModelInputModes;
private bool CanEnable => ViewModel.Property.CanWrite && (((ViewModel.InputMode != null) && !ViewModel.InputMode.IsSingleValue) || (this.inputModePopup == null));
public StringEditorControl (IHostResourceProvider hostResource)
: base (hostResource)
{
this.stringEditor = new PropertyTextField {
BackgroundColor = NSColor.Clear,
ControlSize = NSControlSize.Small,
Font = NSFont.FromFontName (DefaultFontName, DefaultFontSize),
StringValue = string.Empty,
TranslatesAutoresizingMaskIntoConstraints = false,
};
// update the value on keypress
this.stringEditor.Changed += (sender, e) => {
ViewModel.Value = this.stringEditor.StringValue;
};
AddSubview (this.stringEditor);
this.lastKeyView = this.stringEditor;
this.stringEditorWidthConstraint = NSLayoutConstraint.Create (this.stringEditor, NSLayoutAttribute.Width, NSLayoutRelation.Equal, this, NSLayoutAttribute.Width, 1f, -117f);
this.AddConstraints (new[] {
NSLayoutConstraint.Create (this.stringEditor, NSLayoutAttribute.Top, NSLayoutRelation.Equal, this, NSLayoutAttribute.Top, 1f, 1f),
this.stringEditorWidthConstraint,
NSLayoutConstraint.Create (this.stringEditor, NSLayoutAttribute.Height, NSLayoutRelation.Equal, 1f, DefaultControlHeight - 3),
});
}
protected override void UpdateValue ()
{
this.stringEditor.StringValue = ViewModel.Value ?? string.Empty;
this.stringEditor.Enabled = CanEnable;
if (this.inputModePopup != null)
this.inputModePopup.SelectItem ((ViewModel.InputMode == null) ? string.Empty : ViewModel.InputMode.Identifier);
}
protected override void HandleErrorsChanged (object sender, System.ComponentModel.DataErrorsChangedEventArgs e)
{
UpdateErrorsDisplayed (ViewModel.GetErrors (ViewModel.Property.Name));
}
protected override void OnViewModelChanged (PropertyViewModel oldModel)
{
base.OnViewModelChanged (oldModel);
if (ViewModel == null)
return;
if (ViewModel.HasInputModes) {
if (this.inputModePopup == null) {
this.inputModePopup = new FocusablePopUpButton {
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.AddConstraints (new[] {
NSLayoutConstraint.Create (this.inputModePopup, NSLayoutAttribute.Top, NSLayoutRelation.Equal, this, NSLayoutAttribute.Top, 1f, 1f),
NSLayoutConstraint.Create (this.inputModePopup, NSLayoutAttribute.Right, NSLayoutRelation.Equal, this, NSLayoutAttribute.Right, 1f, -33f),
NSLayoutConstraint.Create (this.inputModePopup, NSLayoutAttribute.Width, NSLayoutRelation.Equal, 1f, 80f),
NSLayoutConstraint.Create (this.inputModePopup, NSLayoutAttribute.Height, NSLayoutRelation.Equal, 1f, DefaultControlHeight - 3 ),
});
this.lastKeyView = this.inputModePopup;
}
this.inputModePopup.Menu.RemoveAllItems ();
this.viewModelInputModes = ViewModel.InputModes;
foreach (InputMode item in this.viewModelInputModes) {
this.inputModePopup.Menu.AddItem (new NSMenuItem (item.Identifier));
}
this.stringEditorWidthConstraint.Constant = -117f; // Shorten the stringEditor if we have Inputmodes Showing.
} else {
this.stringEditorWidthConstraint.Constant = -34f; // Lengthen the stringEditor if we have Inputmodes Hidden.
}
// 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;
SetEnabled ();
}
protected override void UpdateErrorsDisplayed (IEnumerable errors)
{
if (ViewModel.HasErrors) {
SetErrors (errors);
} else {
SetErrors (null);
SetEnabled ();
}
}
protected override void SetEnabled ()
{
this.stringEditor.Enabled = CanEnable;
if (this.inputModePopup != null)
this.inputModePopup.Enabled = ViewModel.Property.CanWrite;
}
protected override void UpdateAccessibilityValues ()
{
this.stringEditor.AccessibilityEnabled = this.stringEditor.Enabled;
this.stringEditor.AccessibilityTitle = string.Format (LocalizationResources.AccessibilityString, ViewModel.Property.Name);
if (this.inputModePopup != null) {
this.inputModePopup.AccessibilityEnabled = this.inputModePopup.Enabled;
this.inputModePopup.AccessibilityTitle = string.Format (LocalizationResources.AccessibilityInpueModeEditor, ViewModel.Property.Name);
}
}
}
}
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