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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 | #ifdef __GNUG__ | |
20 | #pragma implementation "dirdlg.h" | |
21 | #endif | |
22 | ||
23 | // For compilers that support precompilation, includes "wx.h". | |
24 | #include "wx/wxprec.h" | |
25 | ||
26 | #ifdef __BORLANDC__ | |
27 | #pragma hdrstop | |
28 | #endif | |
29 | ||
30 | #ifndef WX_PRECOMP | |
31 | #include "wx/utils.h" | |
32 | #include "wx/dialog.h" | |
33 | #include "wx/dirdlg.h" | |
34 | #include "wx/log.h" | |
35 | #endif | |
36 | ||
37 | #include "wx/msw/private.h" | |
38 | ||
39 | #if defined(__WIN95__) && \ | |
40 | (!defined(__GNUWIN32__) || defined(wxUSE_NORLANDER_HEADERS)) | |
41 | #define CAN_COMPILE_DIRDLG | |
42 | //#else: we provide a stub version which doesn't do anything | |
43 | #endif | |
44 | ||
45 | #ifdef CAN_COMPILE_DIRDLG | |
46 | #include "shlobj.h" // Win95 shell | |
47 | #endif | |
48 | ||
49 | // ---------------------------------------------------------------------------- | |
50 | // constants | |
51 | // ---------------------------------------------------------------------------- | |
52 | ||
53 | #ifndef MAX_PATH | |
54 | #define MAX_PATH 4096 // be generuous | |
55 | #endif | |
56 | ||
57 | // ---------------------------------------------------------------------------- | |
58 | // wxWindows macros | |
59 | // ---------------------------------------------------------------------------- | |
60 | ||
61 | IMPLEMENT_CLASS(wxDirDialog, wxDialog) | |
62 | ||
63 | // ---------------------------------------------------------------------------- | |
64 | // private functions prototypes | |
65 | // ---------------------------------------------------------------------------- | |
66 | ||
67 | // free the parameter | |
68 | static void ItemListFree(LPITEMIDLIST pidl); | |
69 | ||
70 | // the callback proc for the dir dlg | |
71 | static int CALLBACK BrowseCallbackProc(HWND hwnd, UINT uMsg, LPARAM lp, | |
72 | LPARAM pData); | |
73 | ||
74 | // ============================================================================ | |
75 | // implementation | |
76 | // ============================================================================ | |
77 | ||
78 | // ---------------------------------------------------------------------------- | |
79 | // wxDirDialog | |
80 | // ---------------------------------------------------------------------------- | |
81 | ||
82 | wxDirDialog::wxDirDialog(wxWindow *parent, | |
83 | const wxString& message, | |
84 | const wxString& defaultPath, | |
85 | long WXUNUSED(style), | |
86 | const wxPoint& WXUNUSED(pos)) | |
87 | { | |
88 | m_message = message; | |
89 | m_parent = parent; | |
90 | m_path = defaultPath; | |
91 | } | |
92 | ||
93 | int wxDirDialog::ShowModal() | |
94 | { | |
95 | #ifdef CAN_COMPILE_DIRDLG | |
96 | BROWSEINFO bi; | |
97 | bi.hwndOwner = m_parent ? GetHwndOf(m_parent) : NULL; | |
98 | bi.pidlRoot = NULL; | |
99 | bi.pszDisplayName = NULL; | |
100 | bi.lpszTitle = m_message.c_str(); | |
101 | bi.ulFlags = BIF_RETURNONLYFSDIRS | BIF_STATUSTEXT; | |
102 | bi.lpfn = BrowseCallbackProc; | |
103 | bi.lParam = (LPARAM)m_path.c_str(); // param for the callback | |
104 | ||
105 | LPITEMIDLIST pidl = SHBrowseForFolder(&bi); | |
106 | ||
107 | if ( bi.pidlRoot ) | |
108 | { | |
109 | ItemListFree((LPITEMIDLIST)bi.pidlRoot); | |
110 | } | |
111 | ||
112 | if ( !pidl ) | |
113 | { | |
114 | // Cancel button pressed | |
115 | return wxID_CANCEL; | |
116 | } | |
117 | ||
118 | BOOL ok = SHGetPathFromIDList(pidl, m_path.GetWriteBuf(MAX_PATH)); | |
119 | m_path.UngetWriteBuf(); | |
120 | ||
121 | ItemListFree(pidl); | |
122 | ||
123 | if ( !ok ) | |
124 | { | |
125 | wxLogLastError("SHGetPathFromIDList"); | |
126 | ||
127 | return wxID_CANCEL; | |
128 | } | |
129 | ||
130 | return wxID_OK; | |
131 | #else // !CAN_COMPILE_DIRDLG | |
132 | return wxID_CANCEL; | |
133 | #endif // CAN_COMPILE_DIRDLG/!CAN_COMPILE_DIRDLG | |
134 | } | |
135 | ||
136 | // ---------------------------------------------------------------------------- | |
137 | // private functions | |
138 | // ---------------------------------------------------------------------------- | |
139 | ||
140 | static int CALLBACK | |
141 | BrowseCallbackProc(HWND hwnd, UINT uMsg, LPARAM lp, LPARAM pData) | |
142 | { | |
143 | switch(uMsg) | |
144 | { | |
145 | case BFFM_INITIALIZED: | |
146 | // sent immediately after initialisation and so we may set the | |
147 | // initial selection here | |
148 | // | |
149 | // wParam = TRUE => lParam is a string and not a PIDL | |
150 | SendMessage(hwnd, BFFM_SETSELECTION, TRUE, pData); | |
151 | break; | |
152 | ||
153 | case BFFM_SELCHANGED: | |
154 | { | |
155 | // Set the status window to the currently selected path. | |
156 | TCHAR szDir[MAX_PATH]; | |
157 | if ( SHGetPathFromIDList((LPITEMIDLIST)lp, szDir) ) | |
158 | { | |
159 | SendMessage(hwnd, BFFM_SETSTATUSTEXT, 0, (LPARAM)szDir); | |
160 | } | |
161 | } | |
162 | break; | |
163 | ||
164 | //case BFFM_VALIDATEFAILED: -- might be used to provide custom message | |
165 | // if the user types in invalid dir name | |
166 | } | |
167 | ||
168 | return 0; | |
169 | } | |
170 | ||
171 | ||
172 | static void ItemListFree(LPITEMIDLIST pidl) | |
173 | { | |
174 | if ( pidl ) | |
175 | { | |
176 | LPMALLOC pMalloc; | |
177 | SHGetMalloc(&pMalloc); | |
178 | if ( pMalloc ) | |
179 | { | |
180 | pMalloc->Free(pidl); | |
181 | pMalloc->Release(); | |
182 | } | |
183 | else | |
184 | { | |
185 | wxLogLastError("SHGetMalloc"); | |
186 | } | |
187 | } | |
188 | } | |
189 |