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comparison ShortcutKeyFinder/ShortcutKeyFinder.cs @ 0:209d9210c18f default tip

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It works.
author Brad Greco <brad@bgreco.net>
date Sat, 25 Jun 2016 13:42:54 +1000
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-1:000000000000 0:209d9210c18f
1 using System;
2 using System.Collections.Generic;
3 using System.ComponentModel;
4 using System.IO;
5 using System.Linq;
6
7 namespace ShortcutKeyFinder
8 {
9 /// <summary>Class to find all shortcuts that have hotkeys assigned</summary>
10 /// <remarks>As far as I can tell, Windows only looks for shortcut hotkeys in the Start Menu and on the Desktop. So this class does as well.</remarks>
11 class ShortcutKeyFinder
12 {
13 private bool _showAll;
14 private List<Shortcut> _allShortcuts = new List<Shortcut>(); // List to hold all the shortcuts we find, regardless of whether they have hotkeys
15
16 /// <summary>List of all shortcuts found in the search locations</summary>
17 /// <remarks>If <see cref="ShowAll"/> is true, shortcuts without assigned hotkeys are included</remarks>
18 public BindingList<Shortcut> Shortcuts { get; private set; }
19
20 /// <summary>Indicates whether to include shortcuts without assigned hotkeys in the list of <see cref="Shortcuts"/></summary>
21 public bool ShowAll
22 {
23 get { return _showAll; }
24 set
25 {
26 _showAll = value;
27 UpdateShortcutList();
28 }
29 }
30
31 /// <summary>Constructor</summary>
32 public ShortcutKeyFinder()
33 {
34 Shortcuts = new BindingList<Shortcut>();
35 }
36
37 /// <summary>Scans the search locations for shortcut files</summary>
38 /// <param name="Admin">Whether to consider shortcuts owned by all users as read-only</param>
39 public void LoadShortcuts(bool Admin = false)
40 {
41 // Reset the master list and rescan the search directories
42 _allShortcuts.Clear();
43 LoadShortcuts(Environment.GetFolderPath(Environment.SpecialFolder.StartMenu), false);
44 LoadShortcuts(Environment.GetFolderPath(Environment.SpecialFolder.CommonStartMenu), !Admin);
45 LoadShortcuts(Environment.GetFolderPath(Environment.SpecialFolder.DesktopDirectory), false);
46 LoadShortcuts(Environment.GetFolderPath(Environment.SpecialFolder.CommonDesktopDirectory), !Admin);
47 // Update the public list with what we found
48 UpdateShortcutList();
49 }
50
51 /// <summary>Recursively scans a directory shortcut files</summary>
52 /// <param name="path">Directory to scan</param>
53 /// <param name="readOnly">Whether to consider the found shortcuts as read-only</param>
54 /// <remarks>The <paramref name="readOnly"/> parameter exists for speed, to avoid checking permissions on every file. Good enough for our purposes.</remarks>
55 private void LoadShortcuts(string path, bool readOnly)
56 {
57 try
58 {
59 foreach (string lnk in Directory.EnumerateFiles(path, "*.lnk", SearchOption.AllDirectories))
60 _allShortcuts.Add(new Shortcut(lnk) { ReadOnly = readOnly });
61 }
62 catch { } // Silently ignore access denied errors, likely nothing the user can do about it anyway
63 }
64
65 /// <summary>Updates the public list of <see cref="Shortcuts"/> with the results of the most recent scan</summary>
66 private void UpdateShortcutList()
67 {
68 // Remove event handlers while we're manipulating the list
69 Shortcuts.ListChanged -= Shortcuts_ListChanged;
70
71 // Reset the list and add all appropriate shortcuts based on the current value of ShowAll
72 Shortcuts.Clear();
73 foreach (Shortcut shortcut in _allShortcuts)
74 if (shortcut.Hotkey != null || _showAll)
75 Shortcuts.Add(shortcut);
76
77 // Go through the list and look for duplicates
78 FindDuplicateShortcuts();
79
80 // Re-add event handlers
81 Shortcuts.ListChanged += Shortcuts_ListChanged;
82 }
83
84 /// <summary>Triggers a search for duplicate shortcuts when one of the shortcuts changes</summary>
85 void Shortcuts_ListChanged(object sender, ListChangedEventArgs e)
86 {
87 FindDuplicateShortcuts();
88 }
89
90 /// <summary>Scans for shortcuts that have duplicate hotkeys</summary>
91 private void FindDuplicateShortcuts()
92 {
93 Shortcuts.GroupBy(shortcut => shortcut.Hotkey).ToList().ForEach(group => group.ToList().ForEach(shortcut => shortcut.HasDuplicateHotkey = group.Count() > 1 && group.Key != null));
94 }
95 }
96 }