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using System;
using Android.Content;
using Android.OS;
using Android.Views.InputMethods;
using Android.Widget;
using AView = Android.Views.View;
namespace Xamarin.Forms.Platform.Android
{
internal static class KeyboardManager
{
internal static void HideKeyboard(this AView inputView, bool overrideValidation = false)
{
if (Forms.Context == null)
throw new InvalidOperationException("Call Forms.Init() before HideKeyboard");
if (inputView == null)
throw new ArgumentNullException(nameof(inputView) + " must be set before the keyboard can be hidden.");
using (var inputMethodManager = (InputMethodManager)Forms.Context.GetSystemService(Context.InputMethodService))
{
if (!overrideValidation && !(inputView is EditText || inputView is TextView || inputView is SearchView))
throw new ArgumentException("inputView should be of type EditText, SearchView, or TextView");
IBinder windowToken = inputView.WindowToken;
if (windowToken != null && inputMethodManager != null)
inputMethodManager.HideSoftInputFromWindow(windowToken, HideSoftInputFlags.None);
}
}
internal static void ShowKeyboard(this AView inputView)
{
if (Forms.Context == null)
throw new InvalidOperationException("Call Forms.Init() before ShowKeyboard");
if (inputView == null)
throw new ArgumentNullException(nameof(inputView) + " must be set before the keyboard can be shown.");
using (var inputMethodManager = (InputMethodManager)Forms.Context.GetSystemService(Context.InputMethodService))
{
if (inputView is EditText || inputView is TextView || inputView is SearchView)
{
if (inputMethodManager != null) {
inputMethodManager.ShowSoftInput(inputView, ShowFlags.Forced);
inputMethodManager.ToggleSoftInput(ShowFlags.Forced, HideSoftInputFlags.ImplicitOnly);
}
}
else
throw new ArgumentException("inputView should be of type EditText, SearchView, or TextView");
}
}
}
}
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