139 lines
3.6 KiB
C#
139 lines
3.6 KiB
C#
/*
|
|
* Copyright (c) 2022 ETH Zürich, Educational Development and Technology (LET)
|
|
*
|
|
* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
*/
|
|
|
|
using System;
|
|
using System.Threading.Tasks;
|
|
using System.Windows.Automation;
|
|
using System.Windows.Controls;
|
|
using System.Windows.Media;
|
|
using SafeExamBrowser.I18n.Contracts;
|
|
using SafeExamBrowser.SystemComponents.Contracts.Keyboard;
|
|
using SafeExamBrowser.UserInterface.Contracts.Shell;
|
|
|
|
namespace SafeExamBrowser.UserInterface.Mobile.Controls.ActionCenter
|
|
{
|
|
internal partial class KeyboardLayoutControl : UserControl, ISystemControl
|
|
{
|
|
private IKeyboard keyboard;
|
|
private IText text;
|
|
|
|
internal KeyboardLayoutControl(IKeyboard keyboard, IText text)
|
|
{
|
|
this.keyboard = keyboard;
|
|
this.text = text;
|
|
|
|
InitializeComponent();
|
|
InitializeKeyboardLayoutControl();
|
|
}
|
|
|
|
public void Close()
|
|
{
|
|
Dispatcher.Invoke(() => Popup.IsOpen = false);
|
|
}
|
|
|
|
private void InitializeKeyboardLayoutControl()
|
|
{
|
|
var originalBrush = Grid.Background;
|
|
|
|
InitializeLayouts();
|
|
|
|
keyboard.LayoutChanged += Keyboard_LayoutChanged;
|
|
Button.Click += (o, args) =>
|
|
{
|
|
Popup.IsOpen = !Popup.IsOpen;
|
|
this.Dispatcher.BeginInvoke((System.Action) (() =>
|
|
{
|
|
LayoutsStackPanel.Children[0].Focus();
|
|
}));
|
|
};
|
|
var lastOpenedBySpacePress = false;
|
|
Button.PreviewKeyDown += (o, args) =>
|
|
{
|
|
if (args.Key == System.Windows.Input.Key.Space) // for some reason, the popup immediately closes again if opened by a Space Bar key event - as a mitigation, we record the space bar event and leave the popup open for at least 3 seconds
|
|
{
|
|
lastOpenedBySpacePress = true;
|
|
}
|
|
};
|
|
Button.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
|
|
{
|
|
if (Popup.IsOpen && lastOpenedBySpacePress)
|
|
{
|
|
return;
|
|
}
|
|
Popup.IsOpen = Popup.IsMouseOver;
|
|
}));
|
|
Popup.MouseLeave += (o, args) => Task.Delay(250).ContinueWith(_ => Dispatcher.Invoke(() =>
|
|
{
|
|
if (Popup.IsOpen && lastOpenedBySpacePress)
|
|
{
|
|
return;
|
|
}
|
|
Popup.IsOpen = IsMouseOver;
|
|
}));
|
|
Popup.Opened += (o, args) => Grid.Background = Brushes.Gray;
|
|
Popup.Closed += (o, args) =>
|
|
{
|
|
Grid.Background = originalBrush;
|
|
lastOpenedBySpacePress = false;
|
|
};
|
|
}
|
|
|
|
private void Keyboard_LayoutChanged(IKeyboardLayout layout)
|
|
{
|
|
Dispatcher.InvokeAsync(() => SetCurrent(layout));
|
|
}
|
|
|
|
private void InitializeLayouts()
|
|
{
|
|
foreach (var layout in keyboard.GetLayouts())
|
|
{
|
|
var button = new KeyboardLayoutButton(layout);
|
|
|
|
button.LayoutSelected += (o, args) => ActivateLayout(layout);
|
|
LayoutsStackPanel.Children.Add(button);
|
|
|
|
if (layout.IsCurrent)
|
|
{
|
|
SetCurrent(layout);
|
|
}
|
|
}
|
|
}
|
|
|
|
private void ActivateLayout(IKeyboardLayout layout)
|
|
{
|
|
Popup.IsOpen = false;
|
|
keyboard.ActivateLayout(layout.Id);
|
|
}
|
|
|
|
private void SetCurrent(IKeyboardLayout layout)
|
|
{
|
|
var tooltip = text.Get(TextKey.SystemControl_KeyboardLayoutTooltip).Replace("%%LAYOUT%%", layout.CultureName);
|
|
|
|
foreach (var child in LayoutsStackPanel.Children)
|
|
{
|
|
if (child is KeyboardLayoutButton layoutButton)
|
|
{
|
|
layoutButton.IsCurrent = layout.Id == layoutButton.LayoutId;
|
|
}
|
|
}
|
|
|
|
Text.Text = layout.CultureName;
|
|
Button.ToolTip = tooltip;
|
|
AutomationProperties.SetName(Button, tooltip);
|
|
}
|
|
|
|
private void Popup_KeyUp(object sender, System.Windows.Input.KeyEventArgs e)
|
|
{
|
|
if (e.Key == System.Windows.Input.Key.Enter || e.Key == System.Windows.Input.Key.Escape)
|
|
{
|
|
Popup.IsOpen = false;
|
|
Button.Focus();
|
|
}
|
|
}
|
|
}
|
|
}
|