1+ using ComponentFactory . Krypton . Toolkit ;
2+ using Microsoft . Win32 ;
3+ using System ;
4+ using System . Windows . Forms ;
5+
6+ namespace PaletteDesigner . Classes
7+ {
8+ /// <summary>
9+ /// Deals with the back-end logic of a most recently used file <see cref="ToolStripMenuItem"/>.
10+ /// Adapted from (https://www.codeproject.com/Articles/407513/Add-Most-Recently-Used-Files-MRU-List-to-Windows).
11+ /// </summary>
12+ public class MostRecentlyUsedDocumentsManager
13+ {
14+ #region Private members
15+ private bool UseConfirmClearListDialogue ;
16+
17+ private string NameOfProgram ;
18+
19+ private string SubKeyName ;
20+
21+ private string filePath ;
22+
23+ private ToolStripMenuItem ParentMenuItem ;
24+
25+ private ToolStripMenuItem ClearListItem ;
26+
27+ private Action < object , EventArgs > OnRecentFileClick ;
28+
29+ private Action < object , EventArgs > OnClearRecentFilesClick ;
30+
31+ /// <summary>
32+ /// Gets or sets the file path.
33+ /// </summary>
34+ /// <value>
35+ /// The file path.
36+ /// </value>
37+ public string FilePath
38+ {
39+ get
40+ {
41+ return filePath ;
42+ }
43+
44+ set
45+ {
46+ filePath = value ;
47+ }
48+ }
49+
50+ /// <summary>
51+ /// Called when [clear recent files click].
52+ /// </summary>
53+ /// <param name="obj">The object.</param>
54+ /// <param name="evt">The <see cref="EventArgs"/> instance containing the event data.</param>
55+ private void OnClearRecentFiles_Click ( object obj , EventArgs evt )
56+ {
57+ try
58+ {
59+ DialogResult result = KryptonMessageBox . Show ( "You are about to clear your recent files list. Do you want to continue?" , "Clear Recent Files" , MessageBoxButtons . YesNo , MessageBoxIcon . Question ) ;
60+
61+ if ( result == DialogResult . Yes )
62+ {
63+ ClearRecentFiles ( ) ;
64+ }
65+ }
66+ catch ( Exception ex )
67+ {
68+ Console . WriteLine ( ex . ToString ( ) ) ;
69+ }
70+
71+ if ( OnClearRecentFilesClick != null )
72+ {
73+ OnClearRecentFilesClick ( obj , evt ) ;
74+ }
75+ }
76+
77+ /// <summary>
78+ /// Clears the recent files.
79+ /// </summary>
80+ private void ClearRecentFiles ( )
81+ {
82+ try
83+ {
84+ RegistryKey rK = Registry . CurrentUser . OpenSubKey ( SubKeyName , true ) ;
85+
86+ if ( rK == null )
87+ {
88+ return ;
89+ }
90+
91+ string [ ] values = rK . GetValueNames ( ) ;
92+
93+ foreach ( string valueName in values )
94+ {
95+ rK . DeleteValue ( valueName , true ) ;
96+ }
97+
98+ rK . Close ( ) ;
99+
100+ ParentMenuItem . DropDownItems . Clear ( ) ;
101+
102+ ParentMenuItem . Enabled = false ;
103+ }
104+ catch ( Exception ex )
105+ {
106+ KryptonMessageBox . Show ( $ "Error: { ex . Message } ", "Unexpected Error" , MessageBoxButtons . OK , MessageBoxIcon . Error ) ;
107+ }
108+ }
109+
110+ /// <summary>
111+ /// Refreshes the recent files menu.
112+ /// </summary>
113+ private void RefreshRecentFilesMenu ( )
114+ {
115+ RegistryKey rK ;
116+
117+ string s ;
118+
119+ ToolStripItem tSI ;
120+
121+ try
122+ {
123+ rK = Registry . CurrentUser . OpenSubKey ( this . SubKeyName , false ) ;
124+
125+ if ( rK == null )
126+ {
127+ ParentMenuItem . Enabled = false ;
128+
129+ return ;
130+ }
131+ }
132+ catch ( Exception ex )
133+ {
134+ KryptonMessageBox . Show ( $ "Error: { ex . Message } ", "Unexpected Error" , MessageBoxButtons . OK , MessageBoxIcon . Error ) ;
135+
136+ return ;
137+ }
138+
139+ ParentMenuItem . DropDownItems . Clear ( ) ;
140+
141+ string [ ] valueNames = rK . GetValueNames ( ) ;
142+
143+ foreach ( string valueName in valueNames )
144+ {
145+ s = rK . GetValue ( valueName , null ) as string ;
146+
147+ if ( s == null )
148+ {
149+ continue ;
150+ }
151+
152+ tSI = ParentMenuItem . DropDownItems . Add ( s ) ;
153+
154+ tSI . Click += new EventHandler ( OnRecentFileClick ) ;
155+ }
156+
157+ if ( ParentMenuItem . DropDownItems . Count == 0 )
158+ {
159+ ParentMenuItem . Enabled = false ;
160+
161+ return ;
162+ }
163+
164+ ParentMenuItem . DropDownItems . Add ( "-" ) ;
165+
166+ tSI = ParentMenuItem . DropDownItems . Add ( "&Clear list" ) ;
167+
168+ tSI . Click += new EventHandler ( OnClearRecentFiles_Click ) ;
169+
170+ ParentMenuItem . Enabled = true ;
171+ }
172+ #endregion
173+
174+ #region Public members
175+ /// <summary>
176+ /// Adds the recent file.
177+ /// </summary>
178+ /// <param name="fileNameWithFullPath">The file name with full path.</param>
179+ public void AddRecentFile ( string fileNameWithFullPath )
180+ {
181+ string s ;
182+
183+ try
184+ {
185+ RegistryKey rK = Registry . CurrentUser . CreateSubKey ( SubKeyName , RegistryKeyPermissionCheck . ReadWriteSubTree ) ;
186+
187+ for ( int i = 0 ; true ; i ++ )
188+ {
189+ s = rK . GetValue ( i . ToString ( ) , null ) as string ;
190+
191+ if ( s == null )
192+ {
193+ rK . SetValue ( i . ToString ( ) , fileNameWithFullPath ) ;
194+
195+ rK . Close ( ) ;
196+
197+ break ;
198+ }
199+ else if ( s == fileNameWithFullPath )
200+ {
201+ rK . Close ( ) ;
202+
203+ break ;
204+ }
205+ }
206+ }
207+ catch ( Exception ex )
208+ {
209+ KryptonMessageBox . Show ( $ "Error: { ex . Message } ", "Unexpected Error" , MessageBoxButtons . OK , MessageBoxIcon . Error ) ;
210+ }
211+
212+ RefreshRecentFilesMenu ( ) ;
213+ }
214+
215+
216+ /// <summary>
217+ /// Removes the recent file.
218+ /// </summary>
219+ /// <param name="fileNameWithFullPath">The file name with full path.</param>
220+ public void RemoveRecentFile ( string fileNameWithFullPath )
221+ {
222+ try
223+ {
224+ RegistryKey rK = Registry . CurrentUser . OpenSubKey ( SubKeyName , true ) ;
225+
226+ string [ ] valuesNames = rK . GetValueNames ( ) ;
227+
228+ foreach ( string valueName in valuesNames )
229+ {
230+ if ( ( rK . GetValue ( valueName , null ) as string ) == fileNameWithFullPath )
231+ {
232+ rK . DeleteValue ( valueName , true ) ;
233+
234+ RefreshRecentFilesMenu ( ) ;
235+
236+ break ;
237+ }
238+ }
239+ }
240+ catch ( Exception ex )
241+ {
242+ Console . WriteLine ( ex . ToString ( ) ) ;
243+ }
244+
245+ RefreshRecentFilesMenu ( ) ;
246+ }
247+ #endregion
248+
249+ #region Constructor
250+ /// <summary>
251+ /// Initializes a new instance of the <see cref="MostRecentlyUsedDocumentsManager"/> class.
252+ /// </summary>
253+ /// <param name="parentMenuItem">The parent menu item.</param>
254+ /// <param name="nameOfProgram">The name of program.</param>
255+ /// <param name="onRecentFileClick">The on recent file click.</param>
256+ /// <param name="onClearRecentFilesClick">The on clear recent files click.</param>
257+ /// <param name="useConfirmClearListDialogue">if set to <c>true</c> [use confirm clear list dialogue].</param>
258+ /// <exception cref="ArgumentException">Bad argument.</exception>
259+ public MostRecentlyUsedDocumentsManager ( ToolStripMenuItem parentMenuItem , string nameOfProgram , Action < object , EventArgs > onRecentFileClick , Action < object , EventArgs > onClearRecentFilesClick = null , bool useConfirmClearListDialogue = true )
260+ {
261+ if ( parentMenuItem == null || onRecentFileClick == null || nameOfProgram == null || nameOfProgram . Length == 0 || nameOfProgram . Contains ( "\\ " ) ) throw new ArgumentException ( "Bad argument." ) ;
262+
263+ ParentMenuItem = parentMenuItem ;
264+
265+ NameOfProgram = nameOfProgram ;
266+
267+ OnRecentFileClick = onRecentFileClick ;
268+
269+ OnClearRecentFilesClick = onClearRecentFilesClick ;
270+
271+ SubKeyName = string . Format ( $ "Software\\ { NameOfProgram } \\ MRU") ;
272+
273+ UseConfirmClearListDialogue = useConfirmClearListDialogue ;
274+
275+ RefreshRecentFilesMenu ( ) ;
276+ }
277+ #endregion
278+ }
279+ }
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