prereq.cc

   1 /*
   2  * Copyright (c) 2005 Brian Dessent
   3  *
   4  *     This program is free software; you can redistribute it and/or modify
   5  *     it under the terms of the GNU General Public License as published by
   6  *     the Free Software Foundation; either version 2 of the License, or
   7  *     (at your option) any later version.
   8  *
   9  *     A copy of the GNU General Public License can be found at
  10  *     http://www.gnu.org/
  11  *
  12  * Written by Brian Dessent <brian@dessent.net>
  13  *
  14  */
  15
  16 #include "prereq.h"
  17 #include "resource.h"
  18 #include "state.h"
  19 #include "threebar.h"
  20 #include "LogSingleton.h"
  21 #include "ControlAdjuster.h"
  22 #include "package_db.h"
  23
  24 #include "Exception.h"
  25 #include "getopt++/BoolOption.h"
  26
  27 // Sizing information.
  28 static ControlAdjuster::ControlInfo PrereqControlsInfo[] = {
  29   {IDC_PREREQ_CHECK,            CP_LEFT,    CP_BOTTOM},
  30   {IDC_PREREQ_EDIT,             CP_STRETCH, CP_STRETCH},
  31   {0, CP_LEFT, CP_TOP}
  32 };
  33
  34 extern ThreeBarProgressPage Progress;
  35 BoolOption IncludeSource (false, 'I', "include-source", IDS_HELPTEXT_INCLUDE_SOURCE);
  36
  37 // ---------------------------------------------------------------------------
  38 // implements class PrereqPage
  39 // ---------------------------------------------------------------------------
  40
  41 PrereqPage::PrereqPage ()
  42 {
  43   sizeProcessor.AddControlInfo (PrereqControlsInfo);
  44 }
  45
  46 bool
  47 PrereqPage::Create ()
  48 {
  49   return PropertyPage::Create (IDD_PREREQ);
  50 }
  51
  52 void
  53 PrereqPage::OnInit ()
  54 {
  55   // start with the checkbox set
  56   CheckDlgButton (GetHWND (), IDC_PREREQ_CHECK, BST_CHECKED);
  57
  58   // set the edit-area to a larger font
  59   SetDlgItemFont(IDC_PREREQ_EDIT, "MS Shell Dlg", 10);
  60 }
  61
  62 void
  63 PrereqPage::OnActivate()
  64 {
  65   // if we have gotten this far, then PrereqChecker has already run isMet
  66   // and found that there were problems; so we can just call
  67   // getUnmetString to format the results and display it
  68
  69   std::string s;
  70   PrereqChecker p;
  71   p.getUnmetString (s);
  72   Log (LOG_PLAIN) << s << endLog;
  73
  74   // convert to CRLF line endings for Windows text box
  75   size_t pos = 0;
  76   while ((pos = s.find("\n", pos)) != std::string::npos)
  77     {
  78       s.replace(pos, 1, "\r\n");
  79       pos += 2;
  80     }
  81   SetDlgItemText (GetHWND (), IDC_PREREQ_EDIT, s.c_str ());
  82
  83   SetFocus (GetDlgItem (IDC_PREREQ_CHECK));
  84 }
  85
  86 long
  87 PrereqPage::OnNext ()
  88 {
  89   HWND h = GetHWND ();
  90   packagedb db;
  91
  92   if (!IsDlgButtonChecked (h, IDC_PREREQ_CHECK))
  93     {
  94       // breakage imminent!  danger, danger
  95       int res = mbox (h, IDS_PREREQ_UNSOLVED_PROBLEMS,
  96                       MB_YESNO | MB_ICONEXCLAMATION | MB_DEFBUTTON2);
  97       if (res == IDNO)
  98         return -1;
  99       else
 100         {
 101           Log (LOG_PLAIN) <<
 102             "NOTE!  User continued with unsolved problems!  "
 103             "Expect some packages to give errors or not function at all." << endLog;
 104           // Change the solver's transaction list to reflect the user's choices.
 105           db.solution.db2trans();
 106         }
 107     }
 108   else
 109     {
 110       db.solution.applyDefaultProblemSolutions();
 111     }
 112
 113   PrereqChecker p;
 114   p.finalize();
 115
 116   return IDD_CONFIRM;
 117 }
 118
 119 long
 120 PrereqPage::OnBack ()
 121 {
 122   // Add reinstall tasks
 123   PrereqChecker p;
 124   p.augment();
 125
 126   // Reset the package database to correspond to the solver's solution
 127   packagedb db;
 128   db.solution.trans2db();
 129
 130   return IDD_CHOOSE;
 131 }
 132
 133 long
 134 PrereqPage::OnUnattended ()
 135 {
 136   // in chooser-only mode, show this page so the user can choose to fix dependency problems or not
 137   if (unattended_mode == chooseronly)
 138     return -1;
 139
 140   packagedb db;
 141   db.solution.applyDefaultProblemSolutions();
 142
 143   PrereqChecker p;
 144   p.finalize();
 145
 146   return IDD_CONFIRM;
 147 }
 148
 149 // ---------------------------------------------------------------------------
 150 // implements class PrereqChecker
 151 // ---------------------------------------------------------------------------
 152
 153 // instantiate the static members
 154 bool PrereqChecker::use_test_packages;
 155 SolverTasks PrereqChecker::q;
 156
 157 bool
 158 PrereqChecker::isMet ()
 159 {
 160   packagedb db;
 161
 162   Progress.SetText1 (IDS_PROGRESS_SOLVING);
 163   Progress.SetText2 ("");
 164   Progress.SetText3 ("");
 165
 166   // Create task list corresponding to current state of package database
 167   q.setTasks();
 168
 169   // apply solver to those tasks and global state (use test or not)
 170   return db.solution.update(q, SolverSolution::keep, use_test_packages);
 171 }
 172
 173 void
 174 PrereqChecker::finalize ()
 175 {
 176   augment();
 177
 178   packagedb db;
 179   db.solution.addSource(IncludeSource);
 180   db.solution.dumpTransactionList();
 181 }
 182
 183 void
 184 PrereqChecker::augment ()
 185 {
 186   packagedb db;
 187   db.solution.augmentTasks(q);
 188 }
 189
 190 /* Formats problems and solutions as a string for display to the user.  */
 191 void
 192 PrereqChecker::getUnmetString (std::string &s)
 193 {
 194   packagedb db;
 195   s = db.solution.report();
 196 }
 197
 198 // ---------------------------------------------------------------------------
 199 // progress page glue
 200 // ---------------------------------------------------------------------------
 201
 202 static int
 203 do_prereq_check_thread(HINSTANCE h, HWND owner)
 204 {
 205   PrereqChecker p;
 206   int retval;
 207
 208   if (p.isMet ())
 209     {
 210       p.finalize();
 211       retval = IDD_CONFIRM;
 212     }
 213   else
 214     {
 215       // rut-roh, some required things are not selected
 216       retval = IDD_PREREQ;
 217     }
 218
 219   return retval;
 220 }
 221
 222 static DWORD WINAPI
 223 do_prereq_check_reflector (void *p)
 224 {
 225   HANDLE *context;
 226   context = (HANDLE *) p;
 227
 228   SetThreadUILanguage(langid);
 229
 230   try
 231   {
 232     int next_dialog = do_prereq_check_thread ((HINSTANCE) context[0], (HWND) context[1]);
 233
 234     // Tell the progress page that we're done prereq checking
 235     Progress.PostMessageNow (WM_APP_PREREQ_CHECK_THREAD_COMPLETE, 0, next_dialog);
 236   }
 237   TOPLEVEL_CATCH((HWND) context[1], "prereq_check");
 238
 239   ExitThread(0);
 240 }
 241
 242 static HANDLE context[2];
 243
 244 void
 245 do_prereq_check (HINSTANCE h, HWND owner)
 246 {
 247   context[0] = h;
 248   context[1] = owner;
 249
 250   DWORD threadID;
 251   CreateThread (NULL, 0, do_prereq_check_reflector, context, 0, &threadID);
 252 }