private void RemoveComboBox()
{
if (this.comboBox == null)
{
return;
}
UnhookSelectionChangeAndClearItems();
this.comboBox.RemoveFromSuperview();
this.comboBox.Dispose();
this.comboBox = null;
}
private void RequireComboBox()
{
if (this.comboBox != null)
{
return;
}
RemovePopup();
this.comboBox = new FocusableComboBox {
AllowsExpansionToolTips = true,
BackgroundColor = NSColor.Clear,
Cell =
{
LineBreakMode = NSLineBreakMode.TruncatingTail,
UsesSingleLineMode = true,
},
ProxyResponder = new ProxyResponder(this, ProxyRowType.SingleView),
ControlSize = NSControlSize.Small,
Font = NSFont.SystemFontOfSize(NSFont.SystemFontSizeForControlSize(NSControlSize.Small)),
TranslatesAutoresizingMaskIntoConstraints = false,
StringValue = String.Empty,
};
this.comboBox.ProxyResponder = new ProxyResponder(this, ProxyRowType.SingleView);
this.comboBox.SelectionChanged += ComboBox_SelectionChanged;
AddSubview(this.comboBox);
AddConstraints(new[] {
NSLayoutConstraint.Create(this.comboBox, NSLayoutAttribute.CenterY, NSLayoutRelation.Equal, this, NSLayoutAttribute.CenterY, 1f, 0f),
NSLayoutConstraint.Create(this.comboBox, NSLayoutAttribute.Left, NSLayoutRelation.Equal, this, NSLayoutAttribute.Left, 1f, 0f),
NSLayoutConstraint.Create(this.comboBox, NSLayoutAttribute.Width, NSLayoutRelation.Equal, this, NSLayoutAttribute.Width, 1f, 0),
});
this.firstKeyView = this.comboBox;
this.lastKeyView = this.comboBox;
}