src/html/helpctrl.cpp

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        helpctrl.cpp
   3 // Purpose:     wxHtmlHelpController
   4 // Notes:       Based on htmlhelp.cpp, implementing a monolithic
   5 //              HTML Help controller class,  by Vaclav Slavik
   6 // Author:      Harm van der Heijden and Vaclav Slavik
   7 // RCS-ID:      $Id$
   8 // Copyright:   (c) Harm van der Heijden and Vaclav Slavik
   9 // Licence:     wxWindows licence
  10 /////////////////////////////////////////////////////////////////////////////
  11
  12 // For compilers that support precompilation, includes "wx.h".
  13 #include "wx/wxprec.h"
  14
  15 #ifdef __BORLANDC__
  16 #pragma hdrstop
  17 #endif
  18
  19 #if wxUSE_WXHTML_HELP
  20
  21 #ifndef WX_PRECOMP
  22     #include "wx/app.h"
  23     #include "wx/intl.h"
  24 #endif // WX_PRECOMP
  25
  26 #include "wx/busyinfo.h"
  27 #include "wx/html/helpctrl.h"
  28 #include "wx/html/helpwnd.h"
  29 #include "wx/html/helpfrm.h"
  30 #include "wx/html/helpdlg.h"
  31
  32 #if wxUSE_HELP
  33     #include "wx/tipwin.h"
  34 #endif
  35
  36 #if wxUSE_LIBMSPACK
  37 #include "wx/html/forcelnk.h"
  38 FORCE_LINK(wxhtml_chm_support)
  39 #endif
  40
  41 IMPLEMENT_DYNAMIC_CLASS(wxHtmlHelpController, wxHelpControllerBase)
  42
  43 wxHtmlHelpController::wxHtmlHelpController(int style, wxWindow* parentWindow):
  44     wxHelpControllerBase(parentWindow)
  45 {
  46     m_helpWindow = NULL;
  47     m_helpFrame = NULL;
  48     m_helpDialog = NULL;
  49     m_Config = NULL;
  50     m_ConfigRoot = wxEmptyString;
  51     m_titleFormat = _("Help: %s");
  52     m_FrameStyle = style;
  53 }
  54
  55 wxHtmlHelpController::~wxHtmlHelpController()
  56 {
  57     if (m_Config)
  58         WriteCustomization(m_Config, m_ConfigRoot);
  59     if (m_helpWindow)
  60         DestroyHelpWindow();
  61 }
  62
  63
  64 void wxHtmlHelpController::DestroyHelpWindow()
  65 {
  66     if (m_FrameStyle & wxHF_EMBEDDED)
  67         return;
  68
  69     // Find top-most parent window
  70     // If a modal dialog
  71     wxWindow* parent = FindTopLevelWindow();
  72     if (parent)
  73     {
  74         wxDialog* dialog = wxDynamicCast(parent, wxDialog);
  75         if (dialog && dialog->IsModal())
  76         {
  77             dialog->EndModal(wxID_OK);
  78         }
  79         parent->Destroy();
  80         m_helpWindow = NULL;
  81     }
  82     m_helpDialog = NULL;
  83     m_helpFrame = NULL;
  84 }
  85
  86 void wxHtmlHelpController::OnCloseFrame(wxCloseEvent& evt)
  87 {
  88     if (m_Config)
  89         WriteCustomization(m_Config, m_ConfigRoot);
  90
  91     evt.Skip();
  92
  93     OnQuit();
  94
  95     if ( m_helpWindow )
  96         m_helpWindow->SetController(NULL);
  97     m_helpWindow = NULL;
  98     m_helpDialog = NULL;
  99     m_helpFrame = NULL;
 100 }
 101
 102 void wxHtmlHelpController::SetTitleFormat(const wxString& title)
 103 {
 104     m_titleFormat = title;
 105     wxHtmlHelpFrame* frame = wxDynamicCast(FindTopLevelWindow(), wxHtmlHelpFrame);
 106     wxHtmlHelpDialog* dialog = wxDynamicCast(FindTopLevelWindow(), wxHtmlHelpDialog);
 107     if (frame)
 108     {
 109         frame->SetTitleFormat(title);
 110     }
 111     else if (dialog)
 112         dialog->SetTitleFormat(title);
 113 }
 114
 115 // Find the top-most parent window
 116 wxWindow* wxHtmlHelpController::FindTopLevelWindow()
 117 {
 118     return wxGetTopLevelParent(m_helpWindow);
 119 }
 120
 121 bool wxHtmlHelpController::AddBook(const wxFileName& book_file, bool show_wait_msg)
 122 {
 123     return AddBook(wxFileSystem::FileNameToURL(book_file), show_wait_msg);
 124 }
 125
 126 bool wxHtmlHelpController::AddBook(const wxString& book, bool show_wait_msg)
 127 {
 128     wxBusyCursor cur;
 129 #if wxUSE_BUSYINFO
 130     wxBusyInfo* busy = NULL;
 131     wxString info;
 132     if (show_wait_msg)
 133     {
 134         info.Printf(_("Adding book %s"), book.c_str());
 135         busy = new wxBusyInfo(info);
 136     }
 137 #endif
 138     bool retval = m_helpData.AddBook(book);
 139 #if wxUSE_BUSYINFO
 140     if (show_wait_msg)
 141         delete busy;
 142 #else
 143     wxUnusedVar(show_wait_msg);
 144 #endif
 145     if (m_helpWindow)
 146         m_helpWindow->RefreshLists();
 147     return retval;
 148 }
 149
 150 wxHtmlHelpFrame* wxHtmlHelpController::CreateHelpFrame(wxHtmlHelpData *data)
 151 {
 152     wxHtmlHelpFrame* frame = new wxHtmlHelpFrame(data);
 153     frame->SetController(this);
 154     frame->Create(m_parentWindow, -1, wxEmptyString, m_FrameStyle, m_Config, m_ConfigRoot);
 155     frame->SetTitleFormat(m_titleFormat);
 156     m_helpFrame = frame;
 157     return frame;
 158 }
 159
 160 wxHtmlHelpDialog* wxHtmlHelpController::CreateHelpDialog(wxHtmlHelpData *data)
 161 {
 162     wxHtmlHelpDialog* dialog = new wxHtmlHelpDialog(data);
 163     dialog->SetController(this);
 164     dialog->SetTitleFormat(m_titleFormat);
 165     dialog->Create(m_parentWindow, -1, wxEmptyString, m_FrameStyle);
 166     m_helpDialog = dialog;
 167     return dialog;
 168 }
 169
 170 wxWindow* wxHtmlHelpController::CreateHelpWindow()
 171 {
 172     if (m_helpWindow)
 173     {
 174         if (m_FrameStyle & wxHF_EMBEDDED)
 175             return m_helpWindow;
 176
 177         wxWindow* topLevelWindow = FindTopLevelWindow();
 178         if (topLevelWindow)
 179             topLevelWindow->Raise();
 180         return m_helpWindow;
 181     }
 182
 183     if (m_Config == NULL)
 184     {
 185         m_Config = wxConfigBase::Get(false);
 186         if (m_Config != NULL)
 187             m_ConfigRoot = _T("wxWindows/wxHtmlHelpController");
 188     }
 189
 190     if (m_FrameStyle & wxHF_DIALOG)
 191     {
 192         wxHtmlHelpDialog* dialog = CreateHelpDialog(&m_helpData);
 193         m_helpWindow = dialog->GetHelpWindow();
 194     }
 195     else if ((m_FrameStyle & wxHF_EMBEDDED) && m_parentWindow)
 196     {
 197         m_helpWindow = new wxHtmlHelpWindow(m_parentWindow, -1, wxDefaultPosition, wxDefaultSize,
 198             wxTAB_TRAVERSAL|wxNO_BORDER, m_FrameStyle, &m_helpData);
 199     }
 200     else // wxHF_FRAME
 201     {
 202         wxHtmlHelpFrame* frame = CreateHelpFrame(&m_helpData);
 203         m_helpWindow = frame->GetHelpWindow();
 204         frame->Show(true);
 205     }
 206
 207     return m_helpWindow;
 208 }
 209
 210 void wxHtmlHelpController::ReadCustomization(wxConfigBase* cfg, const wxString& path)
 211 {
 212     /* should not be called by the user; call UseConfig, and the controller
 213      * will do the rest */
 214     if (m_helpWindow && cfg)
 215         m_helpWindow->ReadCustomization(cfg, path);
 216 }
 217
 218 void wxHtmlHelpController::WriteCustomization(wxConfigBase* cfg, const wxString& path)
 219 {
 220     /* typically called by the controllers OnCloseFrame handler */
 221     if (m_helpWindow && cfg)
 222         m_helpWindow->WriteCustomization(cfg, path);
 223 }
 224
 225 void wxHtmlHelpController::UseConfig(wxConfigBase *config, const wxString& rootpath)
 226 {
 227     m_Config = config;
 228     m_ConfigRoot = rootpath;
 229     if (m_helpWindow) m_helpWindow->UseConfig(config, rootpath);
 230     ReadCustomization(config, rootpath);
 231 }
 232
 233 //// Backward compatibility with wxHelpController API
 234
 235 bool wxHtmlHelpController::Initialize(const wxString& file)
 236 {
 237     wxString dir, filename, ext;
 238     wxFileName::SplitPath(file, & dir, & filename, & ext);
 239
 240     if (!dir.empty())
 241         dir = dir + wxFILE_SEP_PATH;
 242
 243     // Try to find a suitable file
 244     wxString actualFilename = dir + filename + wxString(wxT(".zip"));
 245     if (!wxFileExists(actualFilename))
 246     {
 247         actualFilename = dir + filename + wxString(wxT(".htb"));
 248         if (!wxFileExists(actualFilename))
 249         {
 250             actualFilename = dir + filename + wxString(wxT(".hhp"));
 251             if (!wxFileExists(actualFilename))
 252             {
 253 #if wxUSE_LIBMSPACK
 254                 actualFilename = dir + filename + wxString(wxT(".chm"));
 255                 if (!wxFileExists(actualFilename))
 256 #endif
 257                     return false;
 258             }
 259         }
 260     }
 261     return AddBook(wxFileName(actualFilename));
 262 }
 263
 264 bool wxHtmlHelpController::LoadFile(const wxString& WXUNUSED(file))
 265 {
 266     // Don't reload the file or we'll have it appear again, presumably.
 267     return true;
 268 }
 269
 270 bool wxHtmlHelpController::DisplaySection(int sectionNo)
 271 {
 272     return Display(sectionNo);
 273 }
 274
 275 bool wxHtmlHelpController::DisplayTextPopup(const wxString& text, const wxPoint& WXUNUSED(pos))
 276 {
 277 #if wxUSE_TIPWINDOW
 278     static wxTipWindow* s_tipWindow = NULL;
 279
 280     if (s_tipWindow)
 281     {
 282         // Prevent s_tipWindow being nulled in OnIdle,
 283         // thereby removing the chance for the window to be closed by ShowHelp
 284         s_tipWindow->SetTipWindowPtr(NULL);
 285         s_tipWindow->Close();
 286     }
 287     s_tipWindow = NULL;
 288
 289     if ( !text.empty() )
 290     {
 291         s_tipWindow = new wxTipWindow(wxTheApp->GetTopWindow(), text, 100, & s_tipWindow);
 292
 293         return true;
 294     }
 295 #else
 296     wxUnusedVar(text);
 297 #endif // wxUSE_TIPWINDOW
 298
 299     return false;
 300 }
 301
 302 void wxHtmlHelpController::SetHelpWindow(wxHtmlHelpWindow* helpWindow)
 303 {
 304     m_helpWindow = helpWindow;
 305     if (helpWindow)
 306         helpWindow->SetController(this);
 307 }
 308
 309 void wxHtmlHelpController::SetFrameParameters(const wxString& title,
 310                                    const wxSize& size,
 311                                    const wxPoint& pos,
 312                                    bool WXUNUSED(newFrameEachTime))
 313 {
 314     SetTitleFormat(title);
 315     wxHtmlHelpFrame* frame = wxDynamicCast(FindTopLevelWindow(), wxHtmlHelpFrame);
 316     wxHtmlHelpDialog* dialog = wxDynamicCast(FindTopLevelWindow(), wxHtmlHelpDialog);
 317     if (frame)
 318         frame->SetSize(pos.x, pos.y, size.x, size.y);
 319     else if (dialog)
 320         dialog->SetSize(pos.x, pos.y, size.x, size.y);
 321 }
 322
 323 wxFrame* wxHtmlHelpController::GetFrameParameters(wxSize *size,
 324                                    wxPoint *pos,
 325                                    bool *newFrameEachTime)
 326 {
 327     if (newFrameEachTime)
 328         (* newFrameEachTime) = false;
 329
 330     wxHtmlHelpFrame* frame = wxDynamicCast(FindTopLevelWindow(), wxHtmlHelpFrame);
 331     wxHtmlHelpDialog* dialog = wxDynamicCast(FindTopLevelWindow(), wxHtmlHelpDialog);
 332     if (frame)
 333     {
 334         if (size)
 335             (* size) = frame->GetSize();
 336         if (pos)
 337             (* pos) = frame->GetPosition();
 338         return frame;
 339     }
 340     else if (dialog)
 341     {
 342         if (size)
 343             (* size) = dialog->GetSize();
 344         if (pos)
 345             (* pos) = dialog->GetPosition();
 346         return NULL;
 347     }
 348     return NULL;
 349 }
 350
 351 bool wxHtmlHelpController::Quit()
 352 {
 353     DestroyHelpWindow();
 354     return true;
 355 }
 356
 357 // Make the help controller's frame 'modal' if
 358 // needed
 359 void wxHtmlHelpController::MakeModalIfNeeded()
 360 {
 361     if ((m_FrameStyle & wxHF_EMBEDDED) == 0)
 362     {
 363         wxHtmlHelpFrame* frame = wxDynamicCast(FindTopLevelWindow(), wxHtmlHelpFrame);
 364         wxHtmlHelpDialog* dialog = wxDynamicCast(FindTopLevelWindow(), wxHtmlHelpDialog);
 365         if (frame)
 366             frame->AddGrabIfNeeded();
 367         else if (dialog && (m_FrameStyle & wxHF_MODAL))
 368         {
 369             dialog->ShowModal();
 370         }
 371     }
 372 }
 373
 374 bool wxHtmlHelpController::Display(const wxString& x)
 375 {
 376     CreateHelpWindow();
 377     bool success = m_helpWindow->Display(x);
 378     MakeModalIfNeeded();
 379     return success;
 380 }
 381
 382 bool wxHtmlHelpController::Display(int id)
 383 {
 384     CreateHelpWindow();
 385     bool success = m_helpWindow->Display(id);
 386     MakeModalIfNeeded();
 387     return success;
 388 }
 389
 390 bool wxHtmlHelpController::DisplayContents()
 391 {
 392     CreateHelpWindow();
 393     bool success = m_helpWindow->DisplayContents();
 394     MakeModalIfNeeded();
 395     return success;
 396 }
 397
 398 bool wxHtmlHelpController::DisplayIndex()
 399 {
 400     CreateHelpWindow();
 401     bool success = m_helpWindow->DisplayIndex();
 402     MakeModalIfNeeded();
 403     return success;
 404 }
 405
 406 bool wxHtmlHelpController::KeywordSearch(const wxString& keyword,
 407                                          wxHelpSearchMode mode)
 408 {
 409     CreateHelpWindow();
 410     bool success = m_helpWindow->KeywordSearch(keyword, mode);
 411     MakeModalIfNeeded();
 412     return success;
 413 }
 414
 415 /*
 416  * wxHtmlModalHelp
 417  * A convenience class, to use like this:
 418  *
 419  * wxHtmlModalHelp help(parent, helpFile, topic);
 420  */
 421
 422 wxHtmlModalHelp::wxHtmlModalHelp(wxWindow* parent, const wxString& helpFile, const wxString& topic, int style)
 423 {
 424     // Force some mandatory styles
 425     style |= wxHF_DIALOG | wxHF_MODAL;
 426
 427     wxHtmlHelpController controller(style, parent);
 428     controller.Initialize(helpFile);
 429
 430     if (topic.IsEmpty())
 431         controller.DisplayContents();
 432     else
 433         controller.DisplaySection(topic);
 434 }
 435
 436 #endif // wxUSE_WXHTML_HELP
 437