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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: dirdlg.cpp | |
3 | // Purpose: wxDirDialog | |
4 | // Author: Julian Smart | |
5 | // Modified by: | |
6 | // Created: 01/02/97 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) Julian Smart and Markus Holzem | |
9 | // Licence: wxWindows licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | // ============================================================================ | |
13 | // declarations | |
14 | // ============================================================================ | |
15 | ||
16 | // ---------------------------------------------------------------------------- | |
17 | // headers | |
18 | // ---------------------------------------------------------------------------- | |
19 | ||
20 | #ifdef __GNUG__ | |
21 | #pragma implementation "dirdlg.h" | |
22 | #endif | |
23 | ||
24 | // For compilers that support precompilation, includes "wx.h". | |
25 | #include "wx/wxprec.h" | |
26 | ||
27 | #ifdef __BORLANDC__ | |
28 | #pragma hdrstop | |
29 | #endif | |
30 | ||
31 | #if wxUSE_DIRDLG | |
32 | ||
33 | #if defined(__WIN95__) && !defined(__GNUWIN32_OLD__) && wxUSE_OLE | |
34 | ||
35 | #ifndef WX_PRECOMP | |
36 | #include "wx/utils.h" | |
37 | #include "wx/dialog.h" | |
38 | #include "wx/dirdlg.h" | |
39 | #include "wx/log.h" | |
40 | #include "wx/app.h" // for GetComCtl32Version() | |
41 | #endif | |
42 | ||
43 | #include "wx/msw/private.h" | |
44 | ||
45 | #include <shlobj.h> // Win95 shell | |
46 | ||
47 | // ---------------------------------------------------------------------------- | |
48 | // constants | |
49 | // ---------------------------------------------------------------------------- | |
50 | ||
51 | #ifndef MAX_PATH | |
52 | #define MAX_PATH 4096 // be generous | |
53 | #endif | |
54 | ||
55 | #ifndef BIF_NEWDIALOGSTYLE | |
56 | #define BIF_NEWDIALOGSTYLE 0x0040 | |
57 | #endif | |
58 | ||
59 | #ifndef BIF_NONEWFOLDERBUTTON | |
60 | #define BIF_NONEWFOLDERBUTTON 0x0200 | |
61 | #endif | |
62 | ||
63 | #ifndef BIF_EDITBOX | |
64 | #define BIF_EDITBOX 16 | |
65 | #endif | |
66 | ||
67 | // ---------------------------------------------------------------------------- | |
68 | // wxWindows macros | |
69 | // ---------------------------------------------------------------------------- | |
70 | ||
71 | IMPLEMENT_CLASS(wxDirDialog, wxDialog) | |
72 | ||
73 | // ---------------------------------------------------------------------------- | |
74 | // private functions prototypes | |
75 | // ---------------------------------------------------------------------------- | |
76 | ||
77 | // free the parameter | |
78 | static void ItemListFree(LPITEMIDLIST pidl); | |
79 | ||
80 | // the callback proc for the dir dlg | |
81 | static int CALLBACK BrowseCallbackProc(HWND hwnd, UINT uMsg, LPARAM lp, | |
82 | LPARAM pData); | |
83 | ||
84 | ||
85 | // ============================================================================ | |
86 | // implementation | |
87 | // ============================================================================ | |
88 | ||
89 | // ---------------------------------------------------------------------------- | |
90 | // wxDirDialog | |
91 | // ---------------------------------------------------------------------------- | |
92 | ||
93 | wxDirDialog::wxDirDialog(wxWindow *parent, | |
94 | const wxString& message, | |
95 | const wxString& defaultPath, | |
96 | long style, | |
97 | const wxPoint& WXUNUSED(pos), | |
98 | const wxSize& WXUNUSED(size), | |
99 | const wxString& WXUNUSED(name)) | |
100 | { | |
101 | m_message = message; | |
102 | m_parent = parent; | |
103 | ||
104 | SetStyle(style); | |
105 | SetPath(defaultPath); | |
106 | } | |
107 | ||
108 | void wxDirDialog::SetPath(const wxString& path) | |
109 | { | |
110 | m_path = path; | |
111 | ||
112 | // SHBrowseForFolder doesn't like '/'s nor the trailing backslashes | |
113 | m_path.Replace(_T("/"), _T("\\")); | |
114 | if ( !m_path.empty() ) | |
115 | { | |
116 | while ( *(m_path.end() - 1) == _T('\\') ) | |
117 | { | |
118 | m_path.erase(m_path.length() - 1); | |
119 | } | |
120 | ||
121 | // but the root drive should have a trailing slash (again, this is just | |
122 | // the way the native dialog works) | |
123 | if ( *(m_path.end() - 1) == _T(':') ) | |
124 | { | |
125 | m_path += _T('\\'); | |
126 | } | |
127 | } | |
128 | } | |
129 | ||
130 | int wxDirDialog::ShowModal() | |
131 | { | |
132 | wxWindow *parent = GetParent(); | |
133 | ||
134 | BROWSEINFO bi; | |
135 | bi.hwndOwner = parent ? GetHwndOf(parent) : NULL; | |
136 | bi.pidlRoot = NULL; | |
137 | bi.pszDisplayName = NULL; | |
138 | bi.lpszTitle = m_message.c_str(); | |
139 | bi.ulFlags = BIF_RETURNONLYFSDIRS | BIF_STATUSTEXT; | |
140 | bi.lpfn = BrowseCallbackProc; | |
141 | bi.lParam = (LPARAM)m_path.c_str(); // param for the callback | |
142 | ||
143 | static const int verComCtl32 = wxApp::GetComCtl32Version(); | |
144 | ||
145 | // we always add the edit box (it doesn't hurt anybody, does it?) if it is | |
146 | // supported by the system | |
147 | if ( verComCtl32 >= 471 ) | |
148 | { | |
149 | bi.ulFlags |= BIF_EDITBOX; | |
150 | } | |
151 | ||
152 | // normally the commented out part should work -- but in practice | |
153 | // BIF_NONEWFOLDERBUTTON doesn't have any effect (Win2k, comctl 5.81) so I | |
154 | // have to disable it [for now] | |
155 | #if 0 | |
156 | // to have the "New Folder" button we must use the "new" dialog style which | |
157 | // is also the only way to have a resizable dialog | |
158 | // | |
159 | // "new" style is only available in the version 5.0+ of comctl32.dll | |
160 | const bool needNewDir = HasFlag(wxDD_NEW_DIR_BUTTON); | |
161 | if ( (needNewDir || HasFlag(wxRESIZE_BORDER)) && (verComCtl32 >= 500) ) | |
162 | { | |
163 | bi.ulFlags |= BIF_NEWDIALOGSTYLE; | |
164 | ||
165 | // we'll get the "New Folder" button by default now, don't show it if | |
166 | // not needed | |
167 | if ( !needNewDir ) | |
168 | bi.ulFlags |= BIF_NONEWFOLDERBUTTON; | |
169 | } | |
170 | #else | |
171 | if ( HasFlag(wxDD_NEW_DIR_BUTTON) && verComCtl32 >= 500 ) | |
172 | { | |
173 | // use the new style to make the "New Folder" button appear | |
174 | bi.ulFlags |= BIF_NEWDIALOGSTYLE; | |
175 | } | |
176 | #endif | |
177 | ||
178 | // do show the dialog | |
179 | LPITEMIDLIST pidl = SHBrowseForFolder(&bi); | |
180 | ||
181 | if ( bi.pidlRoot ) | |
182 | { | |
183 | ItemListFree((LPITEMIDLIST)bi.pidlRoot); | |
184 | } | |
185 | ||
186 | if ( !pidl ) | |
187 | { | |
188 | // Cancel button pressed | |
189 | return wxID_CANCEL; | |
190 | } | |
191 | ||
192 | BOOL ok = SHGetPathFromIDList(pidl, wxStringBuffer(m_path, MAX_PATH)); | |
193 | ||
194 | ItemListFree(pidl); | |
195 | ||
196 | if ( !ok ) | |
197 | { | |
198 | wxLogLastError(wxT("SHGetPathFromIDList")); | |
199 | ||
200 | return wxID_CANCEL; | |
201 | } | |
202 | ||
203 | return wxID_OK; | |
204 | } | |
205 | ||
206 | // ---------------------------------------------------------------------------- | |
207 | // private functions | |
208 | // ---------------------------------------------------------------------------- | |
209 | ||
210 | static int CALLBACK | |
211 | BrowseCallbackProc(HWND hwnd, UINT uMsg, LPARAM lp, LPARAM pData) | |
212 | { | |
213 | switch(uMsg) | |
214 | { | |
215 | case BFFM_INITIALIZED: | |
216 | // sent immediately after initialisation and so we may set the | |
217 | // initial selection here | |
218 | // | |
219 | // wParam = TRUE => lParam is a string and not a PIDL | |
220 | SendMessage(hwnd, BFFM_SETSELECTION, TRUE, pData); | |
221 | break; | |
222 | ||
223 | case BFFM_SELCHANGED: | |
224 | // note that this doesn't work with the new style UI (MSDN doesn't | |
225 | // say anything about it, but the comments in shlobj.h do!) but we | |
226 | // still execute this code in case it starts working again with the | |
227 | // "new new UI" (or would it be "NewUIEx" according to tradition?) | |
228 | { | |
229 | // Set the status window to the currently selected path. | |
230 | wxString strDir; | |
231 | if ( SHGetPathFromIDList((LPITEMIDLIST)lp, | |
232 | wxStringBuffer(strDir, MAX_PATH)) ) | |
233 | { | |
234 | // NB: this shouldn't be necessary with the new style box | |
235 | // (which is resizable), but as for now it doesn't work | |
236 | // anyhow (see the comment above) no harm in doing it | |
237 | ||
238 | // need to truncate or it displays incorrectly | |
239 | static const size_t maxChars = 37; | |
240 | if ( strDir.length() > maxChars ) | |
241 | { | |
242 | strDir = strDir.Right(maxChars); | |
243 | strDir = wxString(wxT("...")) + strDir; | |
244 | } | |
245 | ||
246 | SendMessage(hwnd, BFFM_SETSTATUSTEXT, | |
247 | 0, (LPARAM)strDir.c_str()); | |
248 | } | |
249 | } | |
250 | break; | |
251 | ||
252 | //case BFFM_VALIDATEFAILED: -- might be used to provide custom message | |
253 | // if the user types in invalid dir name | |
254 | } | |
255 | ||
256 | return 0; | |
257 | } | |
258 | ||
259 | ||
260 | static void ItemListFree(LPITEMIDLIST pidl) | |
261 | { | |
262 | if ( pidl ) | |
263 | { | |
264 | LPMALLOC pMalloc; | |
265 | SHGetMalloc(&pMalloc); | |
266 | if ( pMalloc ) | |
267 | { | |
268 | pMalloc->Free(pidl); | |
269 | pMalloc->Release(); | |
270 | } | |
271 | else | |
272 | { | |
273 | wxLogLastError(wxT("SHGetMalloc")); | |
274 | } | |
275 | } | |
276 | } | |
277 | ||
278 | #else | |
279 | #include "../generic/dirdlgg.cpp" | |
280 | #endif // compiler/platform on which the code here compiles | |
281 | ||
282 | #endif // wxUSE_DIRDLG |