trunk/Src/Win32/Widgets/FilenameGUI.cpp

   1 // FilenameGUI.cpp
   2 //
   3 /////////////////////////////////////////////////////////////////////////////
   4 //
   5 // Copyright (c) 2002 Iain Murray, Inference Group, Cavendish, Cambridge.
   6 //
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 /*
  10         TODO: For some reason I can't get VC++ 6 SP4 or SP5 (I upgraded just to see) on win2k SP1
  11         to debug this module without raising "user breakpoints". While this can be due to
  12         deliberate int3 instructions, in my experience it is normally indicative of junk code
  13         being loaded due to a buffer overrun. I am concerned.
  14
  15         There seem to be a few common gotchas using the OPENFILNAME structure, but I don't see
  16         what I'm doing wrong. In fact the WINUI\CMDDLG\COMDLG32 SDK sample suffers from exactly
  17         the same problem on my system, I even downloaded the latest SDK to see if it has been
  18         fixed. Now I really don't know what to do, short of reinstalling Windows and Devstudio,
  19         which I really don't want to do.
  20
  21         I have wasted faar too much time fiddlying and Googling already. Could someone tell me
  22         what the problem is? Could they also tell me if it will be just fine on other computers?
  23
  24         Update - on another computer (also win2k) with VC++ the problem isn't there.
  25         I don't have time to work out the difference, I'll just try and compile any releases on
  26         that computer (uist for inference group members).
  27
  28         IAM 08/02
  29 */
  30
  31 #include "WinCommon.h"
  32
  33 #include "FilenameGUI.h"
  34 #include "../resource.h"
  35
  36 #ifndef _MAX_FNAME
  37 #define _MAX_FNAME                 64
  38 #endif
  39
  40 using namespace std;
  41
  42 // Track memory leaks on Windows to the line that new'd the memory
  43 #ifdef _WIN32
  44 #ifdef _DEBUG
  45 #define DEBUG_NEW new( _NORMAL_BLOCK, THIS_FILE, __LINE__ )
  46 #define new DEBUG_NEW
  47 #undef THIS_FILE
  48 static char THIS_FILE[] = __FILE__;
  49 #endif
  50 #endif
  51
  52 const Tstring CFilenameGUI::Empty = TEXT("");
  53
  54 CFilenameGUI::CFilenameGUI(HWND WindowWithTitlebar, Tstring AppName, bool NewWithDate)
  55 :WindowWithTitlebar(WindowWithTitlebar), AppName(AppName), NewWithDate(NewWithDate), Dirty(false), FileAndPath(TEXT("")) {
  56
  57 #ifndef DASHER_WINCE
  58   TCHAR CurrentDirectory[_MAX_DIR];
  59   if(GetCurrentDirectory(_MAX_DIR, CurrentDirectory) > 0) {
  60     OriginalPath = CurrentDirectory;
  61     string foo;
  62     if(OriginalPath[OriginalPath.size() - 1] != TEXT('\\'))     // Yuck. Can't find a call to get
  63       OriginalPath += TEXT('\\');       // the directory separator
  64   }
  65   else
  66 #endif
  67     OriginalPath = TEXT("");
  68
  69   if(NewWithDate) {
  70     New();
  71   }
  72   else
  73     SetWindowTitle();
  74 }
  75
  76 const Tstring & CFilenameGUI::New() {
  77   if(!NewWithDate) {
  78     FileAndPath = TEXT("");
  79   }
  80   else {
  81     SYSTEMTIME SystemTime;
  82     GetLocalTime(&SystemTime);
  83
  84     // I don't care that different countries write dates differently.
  85     // It's not as if the following is even how I would write a date normally.
  86     // The point is that this is a _filename_ - and filenames sort in the
  87     // correct order iff you format the date with this ordering.
  88     TCHAR Buffer[32];
  89     _stprintf(Buffer, TEXT("%04d-%02d-%02d_%02d-%02d-%02d.txt"), SystemTime.wYear, SystemTime.wMonth, SystemTime.wDay, SystemTime.wHour, SystemTime.wMinute, SystemTime.wSecond);
  90
  91     FileAndPath = OriginalPath + Buffer;
  92   }
  93
  94   Dirty = false;
  95   SetWindowTitle();
  96
  97   return FileAndPath;
  98 }
  99
 100 const Tstring & CFilenameGUI::Open() {
 101   OPENFILENAME OpenDialogStructure;
 102   TCHAR FullOpenFilename[_MAX_PATH] = TEXT("");
 103
 104   // Initialize OPENFILENAME
 105   ZeroMemory(&OpenDialogStructure, sizeof(OpenDialogStructure));
 106 #ifdef OPENFILENAME_SIZE_VERSION_400
 107   OpenDialogStructure.lStructSize = OPENFILENAME_SIZE_VERSION_400;
 108 #else
 109   OpenDialogStructure.lStructSize = sizeof(OpenDialogStructure);
 110 #endif
 111   OpenDialogStructure.hwndOwner = WindowWithTitlebar;
 112   OpenDialogStructure.lpstrFile = FullOpenFilename;
 113   OpenDialogStructure.nMaxFile = MAX_PATH;
 114   OpenDialogStructure.lpstrFilter = TEXT("All Files\0*.*\0Text Documents (*.txt)\0*.txt\0");
 115   OpenDialogStructure.nFilterIndex = 1;
 116   OpenDialogStructure.lpstrDefExt = TEXT("txt");
 117   OpenDialogStructure.lpstrInitialDir = NULL;
 118   OpenDialogStructure.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST | OFN_HIDEREADONLY;
 119
 120   // Display the Open dialog box.
 121   if(GetOpenFileName(&OpenDialogStructure) != TRUE)
 122     return Empty;
 123
 124   // Remember file details if we have them
 125   FileAndPath = OpenDialogStructure.lpstrFile;
 126
 127   return FileAndPath;
 128 }
 129
 130 const Tstring & CFilenameGUI::Save() {
 131   if(FileAndPath != TEXT(""))
 132     return FileAndPath;         // Return current filename if there is one
 133   else
 134     // Or as fairly standard in Windows apps, we revert to SaveAs behaviour
 135     return SaveAs();
 136 }
 137
 138 const Tstring & CFilenameGUI::SaveAs() {
 139   // Lots of this is copy and pasted from FileOpen(), which means my programing style has gone to pot
 140   // TODO make this better
 141   OPENFILENAME OpenDialogStructure;
 142   TCHAR FullOpenFilename[MAX_PATH] = TEXT("");
 143
 144   // Initialize OPENFILENAME
 145   ZeroMemory(&OpenDialogStructure, sizeof(OpenDialogStructure));
 146 #ifdef OPENFILENAME_SIZE_VERSION_400
 147   OpenDialogStructure.lStructSize = OPENFILENAME_SIZE_VERSION_400;
 148 #else
 149   OpenDialogStructure.lStructSize = sizeof(OpenDialogStructure);
 150 #endif
 151   OpenDialogStructure.hwndOwner = WindowWithTitlebar;
 152   OpenDialogStructure.lpstrFile = FullOpenFilename;
 153   OpenDialogStructure.nMaxFile = MAX_PATH;
 154   OpenDialogStructure.lpstrFilter = TEXT("All Files\0*.*\0Text Documents (*.txt)\0*.txt\0");
 155   OpenDialogStructure.nFilterIndex = 1;
 156   OpenDialogStructure.lpstrDefExt = TEXT("txt");
 157   OpenDialogStructure.lpstrInitialDir = NULL;
 158   OpenDialogStructure.Flags = OFN_PATHMUSTEXIST | OFN_OVERWRITEPROMPT;
 159
 160   // Display the SaveAs dialog box.
 161   if(GetSaveFileName(&OpenDialogStructure) != TRUE)
 162     return Empty;
 163
 164   // Remember file details if we have them
 165   FileAndPath = OpenDialogStructure.lpstrFile;
 166
 167   return FileAndPath;
 168 }
 169
 170 void CFilenameGUI::SetNewWithDate(bool Value) {
 171   NewWithDate = Value;
 172 }
 173
 174 void CFilenameGUI::SetDirty(bool Value) {
 175   if(Dirty != Value) {
 176     Dirty = Value;
 177     SetWindowTitle();
 178   }
 179 }
 180
 181 void CFilenameGUI::SetWindowTitle() {
 182   Tstring TitleText;
 183
 184 #ifndef DASHER_WINCE
 185   TCHAR PrettyName[_MAX_FNAME];
 186   if(GetFileTitle(FileAndPath.c_str(), PrettyName, _MAX_FNAME) == 0)
 187     TitleText = PrettyName;
 188   else
 189 #endif
 190     WinLocalisation::GetResourceString(IDS_UNTITLED_FILE, &TitleText);
 191
 192   if(Dirty)
 193     TitleText += TEXT("*");
 194   TitleText += TEXT(" - ");
 195   TitleText += AppName;
 196   SendMessage(WindowWithTitlebar, WM_SETTEXT, 0, (LPARAM) TitleText.c_str());
 197 }
 198
 199 int CFilenameGUI::QuerySaveFirst() {
 200   if(Dirty) {
 201     Tstring ResourceString;
 202     Tstring Title;
 203     WinLocalisation::GetResourceString(IDS_QUERY_SAVE_CHANGES, &ResourceString);
 204     WinLocalisation::GetResourceString(IDS_UNSAVED_CHANGES, &Title);
 205
 206     return MessageBox(WindowWithTitlebar, ResourceString.c_str(), Title.c_str(), MB_YESNOCANCEL | MB_ICONWARNING | MB_DEFBUTTON1 | MB_APPLMODAL);
 207     }
 208
 209   return IDNO;
 210 }
 211
 212 void CFilenameGUI::SetFilename(const Tstring &FileName) {
 213   FileAndPath = FileName;
 214   Dirty = false;
 215   SetWindowTitle();
 216 }