interface/wx/html/helpctrl.h

   1 /////////////////////////////////////////////////////////////////////////////
   2 // Name:        html/helpctrl.h
   3 // Purpose:     interface of wxHtmlHelpController
   4 // Author:      wxWidgets team
   5 // RCS-ID:      $Id$
   6 // Licence:     wxWindows licence
   7 /////////////////////////////////////////////////////////////////////////////
   8
   9 /**
  10     @class wxHtmlHelpController
  11
  12     This help controller provides an easy way of displaying HTML help in your
  13     application (see @sample{html}, test example).
  14
  15     The help system is based on @b books (see wxHtmlHelpController::AddBook).
  16     A book is a logical section of documentation (for example "User's Guide" or
  17     "Programmer's Guide" or "C++ Reference" or "wxWidgets Reference").
  18     The help controller can handle as many books as you want.
  19
  20     Although this class has an API compatible with other wxWidgets help controllers
  21     as documented by wxHelpController, it is recommended that you use the enhanced
  22     capabilities of wxHtmlHelpController's API.
  23
  24     wxHTML uses Microsoft's HTML Help Workshop project files (.hhp, .hhk, .hhc) as
  25     its native format. The file format is described in @ref overview_html_helpformats.
  26     The directory @c helpfiles in the @sample{html} contains sample project files.
  27
  28     Note that the Microsoft's HTML Help Workshop
  29     (http://www.microsoft.com/downloads/details.aspx?FamilyID=00535334-c8a6-452f-9aa0-d597d16580cc)
  30     also runs on other platforms using WINE (http://www.winehq.org/) and it can
  31     be used to create the .hpp, .hhk and .hhc files through a friendly GUI.
  32     The commercial tool HelpBlocks (http://www.helpblocks.com) can also create these files.
  33
  34     @library{wxhtml}
  35     @category{help,html}
  36
  37     @see wxBestHelpController, wxHtmlHelpFrame, wxHtmlHelpDialog,
  38          wxHtmlHelpWindow, wxHtmlModalHelp
  39 */
  40 class wxHtmlHelpController
  41 {
  42 public:
  43     /**
  44         Constructor.
  45
  46         @param style
  47             This is a combination of these flags:
  48             - wxHF_TOOLBAR: The help window has a toolbar.
  49             - wxHF_FLAT_TOOLBAR: The help window has a toolbar with flat buttons (aka coolbar).
  50             - wxHF_CONTENTS: The help window has a contents panel.
  51             - wxHF_INDEX: The help window has an index panel.
  52             - wxHF_SEARCH: The help window has a search panel.
  53             - wxHF_BOOKMARKS: The help window has bookmarks controls.
  54             - wxHF_OPEN_FILES: Allows user to open arbitrary HTML document.
  55             - wxHF_PRINT: The toolbar contains "print" button.
  56             - wxHF_MERGE_BOOKS: The contents pane does not show book nodes.
  57               All books are merged together and appear as single book to the user.
  58             - wxHF_ICONS_BOOK: All nodes in contents pane have a book icon.
  59               This is how Microsoft's HTML help viewer behaves.
  60             - wxHF_ICONS_FOLDER: Book nodes in contents pane have a book icon, book's
  61               sections have a folder icon. This is the default.
  62             - wxHF_ICONS_BOOK_CHAPTER: Both book nodes and nodes of top-level
  63               sections of a book (i.e. chapters) have a book icon, all other sections
  64               (sections, subsections, ...) have a folder icon.
  65             - wxHF_EMBEDDED: Specifies that the help controller controls an embedded
  66               window of class wxHtmlHelpWindow that should not be destroyed when
  67               the controller is destroyed.
  68             - wxHF_DIALOG: Specifies that the help controller should create a
  69               dialog containing the help window.
  70             - wxHF_FRAME: Specifies that the help controller should create a frame
  71               containing the help window.
  72               This is the default if neither wxHF_DIALOG nor wxHF_EMBEDDED is specified.
  73             - wxHF_MODAL: Specifies that the help controller should create a modal
  74               dialog containing the help window (used with the wxHF_DIALOG style).
  75             - wxHF_DEFAULT_STYLE: wxHF_TOOLBAR | wxHF_CONTENTS | wxHF_INDEX |
  76               wxHF_SEARCH | wxHF_BOOKMARKS | wxHF_PRINT
  77         @param parentWindow
  78             This is an optional window to be used as the parent for the help window.
  79     */
  80     wxHtmlHelpController(int style = wxHF_DEFAULT_STYLE,
  81                          wxWindow* parentWindow = NULL);
  82
  83     /**
  84         Adds a book (i.e. a @ref overview_html_helpformats ".hhp file"; an HTML Help
  85         Workshop project file) into the list of loaded books.
  86
  87         This must be called at least once before displaying any help.
  88         @a bookFile or @a bookUrl may be either @c ".hhp" file or a ZIP archive
  89         that contains an arbitrary number of @c ".hhp" files in its top-level
  90         directory.
  91         This ZIP archive must have @c ".zip" or @c ".htb" extension (the latter
  92         stands for "HTML book"). In other words,
  93         @code
  94         AddBook(wxFileName("help.zip"))
  95         @endcode
  96         is possible and is the recommended way.
  97
  98         @param bookFile
  99             Help book filename. It is recommended to use this prototype
 100             instead of the one taking URL, because it is less error-prone.
 101         @param showWaitMsg
 102             If @true then a decoration-less window with progress message is displayed.
 103     */
 104     bool AddBook(const wxFileName& bookFile, bool showWaitMsg = false);
 105
 106     /**
 107         Adds a book (i.e. a @ref overview_html_helpformats ".hhp file"; an HTML Help
 108         Workshop project file) into the list of loaded books.
 109
 110         See the other overload for additional info.
 111
 112         @param bookUrl
 113             Help book URL (note that syntax of filename and URL is
 114             different on most platforms).
 115         @param showWaitMsg
 116             If @true then a decoration-less window with progress message is displayed.
 117     */
 118     bool AddBook(const wxString& bookUrl, bool showWaitMsg = false);
 119
 120     /**
 121         Displays page @a x.
 122         This is THE important function - it is used to display the help in application.
 123         You can specify the page in many ways:
 124         - as direct filename of HTML document
 125         - as chapter name (from contents) or as a book name
 126         - as some word from index
 127         - even as any word (will be searched)
 128
 129         Looking for the page runs in these steps:
 130         -# try to locate file named x (if x is for example "doc/howto.htm")
 131         -# try to open starting page of book named x
 132         -# try to find x in contents (if x is for example "How To ...")
 133         -# try to find x in index (if x is for example "How To ...")
 134         -# switch to Search panel and start searching
 135     */
 136     bool Display(const wxString& x);
 137
 138     /**
 139         @overload
 140
 141         This alternative form is used to search help contents by numeric IDs.
 142     */
 143     bool Display(int id);
 144
 145     /**
 146         Displays help window and focuses contents panel.
 147     */
 148     virtual bool DisplayContents();
 149
 150     /**
 151         Displays help window and focuses index panel.
 152     */
 153     bool DisplayIndex();
 154
 155     /**
 156         Displays the help window, focuses search panel and starts searching.
 157         Returns @true if the keyword was found. Optionally it searches through the
 158         index (mode = @c wxHELP_SEARCH_INDEX), default the content
 159         (mode = @c wxHELP_SEARCH_ALL).
 160
 161         @note
 162             KeywordSearch() searches only pages listed in @c ".hhc" file(s).
 163             You should list all pages in the contents file.
 164     */
 165     virtual bool KeywordSearch(const wxString& keyword,
 166                                wxHelpSearchMode mode = wxHELP_SEARCH_ALL);
 167
 168     /**
 169         Reads the controller's setting (position of window, etc.)
 170     */
 171     virtual void ReadCustomization(wxConfigBase* cfg,
 172                                    const wxString& path = wxEmptyString);
 173
 174     /**
 175         Sets whether the help frame should prevent application from exiting
 176         if it's the only remaining top level window.
 177
 178         @enable
 179             If @true, the application will not quit unless the help frame is
 180             closed. Default is @false, i.e. the application does exit if only
 181             the help window remains opened.
 182
 183         @see wxApp::SetExitOnFrameDelete()
 184
 185         @since 2.9.2
 186     */
 187     void SetShouldPreventAppExit(bool enable);
 188
 189     /**
 190         Sets the path for storing temporary files - cached binary versions of index and
 191         contents files.
 192
 193         These binary forms are much faster to read. Default value is empty string
 194         (empty string means that no cached data are stored). Note that these files
 195         are @e not deleted when program exits.
 196
 197         Once created these cached files will be used in all subsequent executions
 198         of your application. If cached files become older than corresponding @c ".hhp"
 199         file (e.g. if you regenerate documentation) it will be refreshed.
 200     */
 201     void SetTempDir(const wxString& path);
 202
 203     /**
 204         Sets format of title of the frame.
 205         Must contain exactly one "%s" (for title of displayed HTML page).
 206     */
 207     void SetTitleFormat(const wxString& format);
 208
 209     /**
 210         Associates the @a config object with the controller.
 211
 212         If there is associated config object, wxHtmlHelpController automatically
 213         reads and writes settings (including wxHtmlWindow's settings) when needed.
 214         The only thing you must do is create wxConfig object and call UseConfig().
 215
 216         If you do not use UseConfig(), wxHtmlHelpController will use the default
 217         wxConfig object if available (for details see wxConfigBase::Get and
 218         wxConfigBase::Set).
 219     */
 220     void UseConfig(wxConfigBase* config,
 221                    const wxString& rootpath = wxEmptyString);
 222
 223     /**
 224         Stores controllers setting (position of window etc.)
 225     */
 226     virtual void WriteCustomization(wxConfigBase* cfg,
 227                                     const wxString& path = wxEmptyString);
 228
 229 protected:
 230
 231     /**
 232         This protected virtual method may be overridden so that when specifying the
 233         @c wxHF_DIALOG style, the controller uses a different dialog.
 234     */
 235     virtual wxHtmlHelpDialog* CreateHelpDialog(wxHtmlHelpData* data);
 236
 237     /**
 238         This protected virtual method may be overridden so that the controller
 239         uses a different frame.
 240     */
 241     virtual wxHtmlHelpFrame* CreateHelpFrame(wxHtmlHelpData* data);
 242 };
 243
 244
 245
 246 /**
 247     @class wxHtmlModalHelp
 248
 249     This class uses wxHtmlHelpController to display help in a modal dialog.
 250     This is useful on platforms such as wxMac where if you display help from a
 251     modal dialog, the help window must itself be a modal dialog.
 252
 253     Create objects of this class on the stack, for example:
 254
 255     @code
 256         // The help can be browsed during the lifetime of this object; when the
 257         // user quits the help, program execution will continue.
 258         wxHtmlModalHelp help(parent, "help", "My topic");
 259     @endcode
 260
 261     @library{wxhtml}
 262     @category{help,html}
 263 */
 264 class wxHtmlModalHelp
 265 {
 266 public:
 267     /**
 268         The ctor.
 269
 270         @param parent
 271             is the parent of the dialog.
 272         @param helpFile
 273             is the HTML help file to show.
 274         @param topic
 275             is an optional topic. If this is empty, the help contents will be shown.
 276         @param style
 277             is a combination of the flags described in the wxHtmlHelpController
 278             documentation.
 279     */
 280     wxHtmlModalHelp(wxWindow* parent, const wxString& helpFile,
 281                     const wxString& topic = wxEmptyString,
 282                     int style = wxHF_DEFAULT_STYLE | wxHF_DIALOG | wxHF_MODAL);
 283 };
 284