mirror of
https://github.com/Hofknecht/SystemTrayMenu.git
synced 2024-07-20 13:45:56 +12:00
189e45099c
Remove some old drag and drop code (feature might be added later again) Refactored some events to work with Menu s instead of ListView s
505 lines
18 KiB
C#
505 lines
18 KiB
C#
// <copyright file="KeyboardInput.cs" company="PlaceholderCompany">
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// Copyright (c) PlaceholderCompany. All rights reserved.
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// </copyright>
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namespace SystemTrayMenu.Handler
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{
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using System;
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using System.Linq;
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using System.Windows.Controls;
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using System.Windows.Input;
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using SystemTrayMenu.DataClasses;
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using SystemTrayMenu.Helpers;
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using SystemTrayMenu.Utilities;
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using static SystemTrayMenu.UserInterface.Menu;
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using Menu = SystemTrayMenu.UserInterface.Menu;
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internal class KeyboardInput : IDisposable
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{
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private readonly Menu?[] menus;
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private readonly KeyboardHook hook = new();
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private Menu? focussedMenu;
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private ListViewItemData? focussedRow;
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public KeyboardInput(Menu?[] menus)
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{
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this.menus = menus;
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}
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internal event Action? HotKeyPressed;
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internal event Action? ClosePressed;
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internal event Action<Menu, ListViewItemData>? RowSelected;
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internal event Action<Menu?, ListViewItemData?>? RowDeselected;
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internal event Action<Menu, ListViewItemData>? EnterPressed;
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internal bool InUse { get; set; }
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public void Dispose()
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{
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hook.Dispose();
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}
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internal void RegisterHotKey()
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{
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if (!string.IsNullOrEmpty(Properties.Settings.Default.HotKey))
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{
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try
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{
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hook.RegisterHotKey();
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hook.KeyPressed += (sender, e) => HotKeyPressed?.Invoke();
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}
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catch (InvalidOperationException ex)
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{
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Log.Warn($"key:'{Properties.Settings.Default.HotKey}'", ex);
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Properties.Settings.Default.HotKey = string.Empty;
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Properties.Settings.Default.Save();
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}
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}
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}
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internal void ResetSelectedByKey()
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{
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focussedMenu = null;
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focussedRow = null;
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}
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internal void CmdKeyProcessed(Menu sender, Key key, ModifierKeys modifiers)
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{
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switch (key)
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{
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case Key.Enter:
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if (modifiers == ModifierKeys.None)
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{
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SelectByKey(key, modifiers);
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focussedMenu?.FocusTextBox();
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}
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break;
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case Key.Left:
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case Key.Right:
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case Key.Home:
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case Key.End:
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case Key.Up:
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case Key.Down:
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case Key.Escape:
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if (modifiers == ModifierKeys.None)
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{
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SelectByKey(key, modifiers);
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}
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break;
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case Key.F4:
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if (modifiers == ModifierKeys.Alt)
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{
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SelectByKey(key, modifiers);
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}
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break;
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case Key.F:
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if (modifiers == ModifierKeys.Control)
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{
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focussedMenu?.FocusTextBox();
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}
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break;
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case Key.Tab:
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if (modifiers == ModifierKeys.None)
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{
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int indexOfTheCurrentMenu = GetMenuIndex(sender);
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int indexMax = menus.Where(m => m != null).Count() - 1;
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int indexNew = 0;
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if (indexOfTheCurrentMenu > 0)
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{
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indexNew = indexOfTheCurrentMenu - 1;
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}
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else
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{
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indexNew = indexMax;
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}
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menus[indexNew]?.FocusTextBox();
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}
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else if (modifiers == ModifierKeys.Shift)
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{
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int indexOfTheCurrentMenu = GetMenuIndex(sender);
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int indexMax = menus.Where(m => m != null).Count() - 1;
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int indexNew = 0;
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if (indexOfTheCurrentMenu < indexMax)
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{
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indexNew = indexOfTheCurrentMenu + 1;
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}
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else
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{
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indexNew = 0;
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}
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menus[indexNew]?.FocusTextBox();
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}
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break;
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case Key.Apps:
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if (modifiers == ModifierKeys.None)
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{
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ListView? dgv = focussedMenu?.GetDataGridView();
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if (dgv != null)
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{
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if (focussedRow != null)
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{
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#if TODO // WPF: Better way to open context menu (as it looks like this is the code's intention)
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Point point = dgv.GetCellDisplayRectangle(2, iRowKey, false).Location;
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RowData trigger = (RowData)dgv.Rows[iRowKey].Cells[2].Value;
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MouseEventArgs mouseEventArgs = new(MouseButtons.Right, 1, point.X, point.Y, 0);
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trigger.MouseDown(dgv, mouseEventArgs);
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#endif
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}
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}
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}
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break;
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default:
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break;
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}
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int GetMenuIndex(in Menu? currentMenu)
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{
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int index = 0;
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foreach (Menu? menuFindIndex in menus.Where(m => m != null))
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{
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if (currentMenu == menuFindIndex)
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{
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break;
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}
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index++;
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}
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return index;
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}
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}
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internal void SearchTextChanging()
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{
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ClearIsSelectedByKey();
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}
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internal void SearchTextChanged(Menu menu, bool isSearchStringEmpty)
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{
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if (isSearchStringEmpty)
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{
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ClearIsSelectedByKey();
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}
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else
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{
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ListView dgv = menu.GetDataGridView();
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if (dgv.Items.Count > 0)
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{
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Select(menu, (ListViewItemData)dgv.Items[0], true);
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}
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}
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}
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internal void ClearIsSelectedByKey()
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{
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ClearIsSelectedByKey(focussedMenu, focussedRow);
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}
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internal void Select(Menu menu, ListViewItemData itemData, bool refreshview)
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{
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if (itemData != focussedRow || menu != focussedMenu)
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{
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ClearIsSelectedByKey();
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}
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focussedMenu = menu;
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focussedRow = itemData;
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itemData.data.IsSelected = true;
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if (refreshview)
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{
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ListView dgv = menu.GetDataGridView();
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if (dgv.SelectedItems.Contains(itemData))
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{
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dgv.SelectedItems.Remove(itemData);
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}
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dgv.SelectedItems.Add(itemData);
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}
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}
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private static void ClearIsSelectedByKey(Menu? menu, ListViewItemData? itemData)
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{
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if (menu != null && itemData != null)
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{
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ListView dgv = menu.GetDataGridView();
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if (dgv.SelectedItems.Contains(itemData))
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{
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dgv.SelectedItems.Remove(itemData);
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}
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itemData.data.IsSelected = false;
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itemData.data.IsClicking = false;
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}
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}
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private void SelectByKey(Key key, ModifierKeys modifiers)
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{
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Menu? menuFromSelected;
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Menu? menuBefore;
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ListView? dgvBefore;
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ListViewItemData? rowBefore = focussedRow;
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bool toClear = false;
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bool isSelected = focussedRow?.data.IsSelected ?? false;
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if (isSelected)
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{
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menuFromSelected = focussedRow?.data.SubMenu;
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menuBefore = focussedMenu;
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dgvBefore = menuBefore?.GetDataGridView();
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}
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else
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{
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ResetSelectedByKey();
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menuFromSelected = null;
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menuBefore = null;
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dgvBefore = null;
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}
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switch (key)
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{
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case Key.Enter:
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if ((modifiers == ModifierKeys.None) && rowBefore != null && menuBefore != null)
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{
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RowData trigger = rowBefore.data;
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if (trigger.IsMenuOpen || !trigger.IsPointingToFolder)
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{
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trigger.OpenItem(out bool doCloseAfterOpen);
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if (doCloseAfterOpen)
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{
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ClosePressed?.Invoke();
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}
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}
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else
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{
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RaiseRowSelectionChanged(menuBefore, rowBefore);
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EnterPressed?.Invoke(menuBefore, rowBefore);
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}
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}
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break;
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case Key.Up:
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if ((modifiers == ModifierKeys.None) &&
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dgvBefore != null &&
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(TrySelectPrevious(dgvBefore, dgvBefore.Items.IndexOf(rowBefore)) ||
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TrySelectPrevious(dgvBefore, dgvBefore.Items.Count - 1)))
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{
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RaiseRowSelectionChanged(menuBefore, rowBefore);
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toClear = true;
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}
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break;
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case Key.Down:
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if ((modifiers == ModifierKeys.None) &&
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dgvBefore != null &&
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(TrySelectNext(dgvBefore, dgvBefore.Items.IndexOf(rowBefore)) ||
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TrySelectNext(dgvBefore, 0)))
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{
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RaiseRowSelectionChanged(menuBefore, rowBefore);
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toClear = true;
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}
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break;
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case Key.Home:
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if ((modifiers == ModifierKeys.None) &&
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dgvBefore != null &&
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TrySelectNext(dgvBefore, 0))
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{
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RaiseRowSelectionChanged(menuBefore, rowBefore);
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toClear = true;
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}
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break;
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case Key.End:
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if ((modifiers == ModifierKeys.None) &&
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dgvBefore != null &&
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TrySelectPrevious(dgvBefore, dgvBefore.Items.Count - 1))
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{
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RaiseRowSelectionChanged(menuBefore, rowBefore);
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toClear = true;
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}
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break;
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case Key.Left:
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case Key.Right:
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if (modifiers == ModifierKeys.None &&
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dgvBefore != null &&
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focussedMenu != null)
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{
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// True, when next is left and key is left = true OR next is right (=not left) and key is right (not left)
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bool nextMenuInKeyDirection = (focussedMenu?.SubMenu?.Location.X < focussedMenu?.Location.X) == (key == Key.Left);
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// TODO: Check what this actually does as it is only true for wrap arounds on screen corners
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// but why not simply just select prev menu instead?
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// True, when prev is right (=not left) but key is left = true OR prev is left but key is right (not left)
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bool prevMenuAgainstKeyDirection = (focussedMenu?.Location.X < focussedMenu?.ParentMenu?.Location.X) == (key == Key.Left);
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if (nextMenuInKeyDirection || prevMenuAgainstKeyDirection)
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{
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// Next is in key direction or prev is opposite of key direction ==> TrySelect sub/next menu
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if (isSelected)
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{
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if (menuFromSelected != null &&
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menuFromSelected == focussedMenu?.SubMenu)
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{
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ListView dgv = menuFromSelected.GetDataGridView();
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if (dgv != null && dgv.Items.Count > 0)
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{
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focussedMenu = menuFromSelected;
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focussedRow = null;
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if (TrySelectNext(dgv, 0))
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{
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RaiseRowSelectionChanged(menuBefore, rowBefore);
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toClear = true;
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}
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}
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}
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}
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else
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{
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focussedMenu = menus[0];
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while (focussedMenu?.SubMenu != null)
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{
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focussedMenu = focussedMenu.SubMenu;
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}
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focussedRow = null;
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Menu? lastMenu = focussedMenu;
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if (lastMenu != null)
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{
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ListView dgv = lastMenu.GetDataGridView();
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if (TrySelectNext(dgv, 0))
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{
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RaiseRowSelectionChanged(menuBefore, rowBefore);
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toClear = true;
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}
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}
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}
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}
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else if (focussedMenu?.ParentMenu != null)
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{
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// Next is in opposite key direction and prev is in key direction ==> TrySelect parent/prev menu
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focussedMenu = focussedMenu.ParentMenu;
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focussedRow = null;
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ListView dgv = focussedMenu.GetDataGridView();
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if (TrySelectNext(dgv, dgv.Items.IndexOf(dgv.SelectedItems.Count > 0 ? dgv.SelectedItems[0] : null)) ||
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TrySelectNext(dgv, 0))
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{
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RaiseRowSelectionChanged(menuBefore, rowBefore);
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toClear = true;
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}
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}
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}
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break;
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case Key.Escape:
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case Key.F4:
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if ((key == Key.Escape && modifiers == ModifierKeys.None) ||
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(key == Key.F4 && modifiers == ModifierKeys.Alt))
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{
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RowDeselected?.Invoke(menuBefore, rowBefore);
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ResetSelectedByKey();
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toClear = true;
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ClosePressed?.Invoke();
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}
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break;
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default:
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break;
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}
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if (isSelected && toClear)
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{
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ClearIsSelectedByKey(menuBefore, rowBefore);
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}
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}
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private void RaiseRowSelectionChanged(Menu? menuBefore, ListViewItemData? rowBefore)
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{
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RowDeselected?.Invoke(menuBefore, rowBefore);
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if (focussedMenu != null && focussedRow != null)
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{
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InUse = true;
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RowSelected?.Invoke(focussedMenu, focussedRow);
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}
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}
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private bool TrySelectNext(ListView dgv, int indexStart)
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{
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bool found = false;
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if (indexStart >= 0)
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{
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for (uint i = (uint)indexStart; i < dgv.Items.Count; i++)
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{
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if (TrySelect(dgv, (ListViewItemData)dgv.Items[(int)i]))
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{
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found = true;
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break;
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}
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}
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}
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return found;
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}
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private bool TrySelectPrevious(ListView dgv, int indexStart)
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{
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bool found = false;
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if (indexStart > 0)
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{
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if (dgv.Items.Count <= indexStart)
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{
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indexStart = dgv.Items.Count - 1;
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}
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for (int i = indexStart; i > -1; i--)
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{
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if (TrySelect(dgv, (ListViewItemData)dgv.Items[i]))
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{
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found = true;
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break;
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}
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}
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}
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return found;
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}
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private bool TrySelect(ListView dgv, ListViewItemData itemData)
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{
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bool found = false;
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if (itemData != focussedRow)
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{
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focussedRow = itemData;
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itemData.data.IsSelected = true;
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if (dgv.SelectedItems.Contains(itemData))
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{
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dgv.SelectedItems.Remove(itemData);
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}
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dgv.SelectedItems.Add(itemData);
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dgv.ScrollIntoView(itemData);
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found = true;
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}
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return found;
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}
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}
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}
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