UIKeyModifierFlags UIKeyModifierFlagsFrom(HardwareKeyModifierKeys modifierKeys)
{
var flags = (UIKeyModifierFlags)0;
if (((HardwareKeyModifierKeys)modifierKeys & HardwareKeyModifierKeys.Alternate) > 0)
{
flags |= UIKeyModifierFlags.Alternate;
}
if (((HardwareKeyModifierKeys)modifierKeys & HardwareKeyModifierKeys.CapsLock) > 0)
{
flags |= UIKeyModifierFlags.AlphaShift;
}
if (((HardwareKeyModifierKeys)modifierKeys & HardwareKeyModifierKeys.Control) > 0)
{
flags |= UIKeyModifierFlags.Control;
}
if (((HardwareKeyModifierKeys)modifierKeys & HardwareKeyModifierKeys.NumericPadKey) > 0)
{
flags |= UIKeyModifierFlags.NumericPad;
}
if (((HardwareKeyModifierKeys)modifierKeys & HardwareKeyModifierKeys.PlatformKey) > 0)
{
flags |= UIKeyModifierFlags.Command;
}
if (((HardwareKeyModifierKeys)modifierKeys & HardwareKeyModifierKeys.Shift) > 0)
{
flags |= UIKeyModifierFlags.Shift;
}
return(flags);
}
static UIKeyCommand UIKeyCommandFrom(NSString nsInput, HardwareKeyModifierKeys modifier, string descriptiveText)
{
var flags = UIKeyModifierFlagsFrom(modifier);
return(string.IsNullOrWhiteSpace(descriptiveText)
? UIKeyCommand.Create(nsInput, flags, _onKeyPressSelector)
: UIKeyCommand.Create(nsInput, flags, _onKeyPressSelector, new NSString(descriptiveText)));
}
/// <summary> /// Adds the hardware key listener to a View. /// </summary> /// <returns>The hardware key listener.</returns> /// <param name="view">View.</param> /// <param name="keyInput">Key input.</param> /// <param name="hardwareKeyModifierKeys">Hardware key modifier keys.</param> /// <param name="discoverableTitle">Discoverable title.</param> /// <param name="onPressed">On pressed.</param> public static HardwareKeyListener AddHardwareKeyListener(this View view, string keyInput, HardwareKeyModifierKeys hardwareKeyModifierKeys, string discoverableTitle, EventHandler <HardwareKeyEventArgs> onPressed = null) => AddHardwareKeyListener(view as VisualElement, keyInput, hardwareKeyModifierKeys, discoverableTitle, onPressed);
/// <summary>
/// Initializes a new instance of the <see cref="T:Forms9Patch.HardwareKey"/> class.
/// </summary>
/// <param name="keyInput">KeyInput.</param>
/// <param name="modifierKeys">Modifier keys.</param>
/// <param name="discoverableTitle">Discoverable title.</param>
public HardwareKey(string keyInput, HardwareKeyModifierKeys modifierKeys = HardwareKeyModifierKeys.None, string discoverableTitle = null)
{
KeyInput = keyInput;
ModifierKeys = modifierKeys;
DiscoverableTitle = discoverableTitle;
}
/// <summary> /// Matches a hardware key listener and, if found, removes it from this ContentPage. /// </summary> /// <param name="page">Forms9Patch.HardwareKeyPage.</param> /// <param name="keyInput">Key Label.</param> /// <param name="hardwareKeyModifierKeys">Hardware key modifier keys.</param> public static void RemoveHardwareKeyListener(this PopupBase page, string keyInput, HardwareKeyModifierKeys hardwareKeyModifierKeys = HardwareKeyModifierKeys.None) => RemoveHardwareKeyListener(page as VisualElement, keyInput, hardwareKeyModifierKeys);
internal static HardwareKeyListener AddHardwareKeyListener(this VisualElement visualElement, string keyInput, HardwareKeyModifierKeys hardwareKeyModifierKeys = HardwareKeyModifierKeys.None, string discoverableTitle = null, EventHandler <HardwareKeyEventArgs> onPressed = null)
{
var hardwareKeyListener = new HardwareKeyListener(new HardwareKey(keyInput, hardwareKeyModifierKeys, discoverableTitle), onPressed);
var listeners = visualElement.GetHardwareKeyListeners();
if (listeners.FirstOrDefault(l => l.HardwareKey == hardwareKeyListener.HardwareKey) is HardwareKeyListener redundantListener)
{
listeners.Remove(redundantListener);
Console.WriteLine("Forms9Patch.HardwareKeyListener: Replacing [" + redundantListener + "] with [" + hardwareKeyListener + "]");
}
listeners.Add(hardwareKeyListener);
return(hardwareKeyListener);
}
/// <summary> /// Matches a hardware key listener and, if found, removes it from this Xamarin.Forms.View. /// </summary> /// <param name="view">Xamarin.Forms.View.</param> /// <param name="keyInput">Key Label.</param> /// <param name="hardwareKeyModifierKeys">Hardware key modifier keys.</param> public static void RemoveHardwareKeyListener(this View view, string keyInput, HardwareKeyModifierKeys hardwareKeyModifierKeys = HardwareKeyModifierKeys.None) => RemoveHardwareKeyListener(view as VisualElement, keyInput, hardwareKeyModifierKeys);
internal static void RemoveHardwareKeyListener(this VisualElement visualElement, string keyInput, HardwareKeyModifierKeys hardwareKeyModifierKeys = HardwareKeyModifierKeys.None)
{
//foreach (var listener in visualElement.GetHardwareKeyListeners())
var listeners = visualElement.GetHardwareKeyListeners();
for (int i = 0; i < listeners.Count; i++)
{
var key = listeners[i].HardwareKey;
if (key.KeyInput == keyInput && key.ModifierKeys == hardwareKeyModifierKeys)
{
listeners.RemoveAt(i);
break;
}
}
}
/// <summary> /// Adds a hardware key listener to a HardwareKeyPage. /// </summary> /// <returns>The hardware key listener.</returns> /// <param name="page">Page.</param> /// <param name="keyInput">Key input.</param> /// <param name="hardwareKeyModifierKeys">Hardware key modifier keys.</param> /// <param name="onPressed">On pressed.</param> public static HardwareKeyListener AddHardwareKeyListener(this PopupBase page, string keyInput, HardwareKeyModifierKeys hardwareKeyModifierKeys, EventHandler <HardwareKeyEventArgs> onPressed = null) => AddHardwareKeyListener(page as VisualElement, keyInput, hardwareKeyModifierKeys, null, onPressed);
internal static HardwareKeyListener AddHardwareKeyListener(this VisualElement visualElement, string keyInput, HardwareKeyModifierKeys hardwareKeyModifierKeys = HardwareKeyModifierKeys.None, string discoverableTitle = null, EventHandler <HardwareKeyEventArgs> onPressed = null)
{
var hardwareKeyListener = new HardwareKeyListener(new HardwareKey(keyInput, hardwareKeyModifierKeys, discoverableTitle), onPressed);
var listeners = visualElement.GetHardwareKeyListeners();
listeners.Add(hardwareKeyListener);
return(hardwareKeyListener);
}
/// <summary> /// Adds a hardware key listener to a HardwareKeyPage. /// </summary> /// <returns>The hardware key listener.</returns> /// <param name="page">Page.</param> /// <param name="keyInput">Key input.</param> /// <param name="hardwareKeyModifierKeys">Hardware key modifier keys.</param> /// <param name="discoverableTitle">Discoverable title.</param> /// <param name="onPressed">On pressed.</param> public static HardwareKeyListener AddHardwareKeyListener(this Forms9Patch.HardwareKeyPage page, string keyInput, HardwareKeyModifierKeys hardwareKeyModifierKeys, string discoverableTitle, EventHandler <HardwareKeyEventArgs> onPressed = null) => AddHardwareKeyListener(page as VisualElement, keyInput, hardwareKeyModifierKeys, discoverableTitle, onPressed);