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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*/
40class wxHtmlHelpController
41{
42public:
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 the path for storing temporary files - cached binary versions of index and
176 contents files.
177
178 These binary forms are much faster to read. Default value is empty string
179 (empty string means that no cached data are stored). Note that these files
180 are @e not deleted when program exits.
181
182 Once created these cached files will be used in all subsequent executions
183 of your application. If cached files become older than corresponding @c ".hhp"
184 file (e.g. if you regenerate documentation) it will be refreshed.
185 */
186 void SetTempDir(const wxString& path);
187
188 /**
189 Sets format of title of the frame.
190 Must contain exactly one "%s" (for title of displayed HTML page).
191 */
192 void SetTitleFormat(const wxString& format);
193
194 /**
195 Associates the @a config object with the controller.
196
197 If there is associated config object, wxHtmlHelpController automatically
198 reads and writes settings (including wxHtmlWindow's settings) when needed.
199 The only thing you must do is create wxConfig object and call UseConfig().
200
201 If you do not use UseConfig(), wxHtmlHelpController will use the default
202 wxConfig object if available (for details see wxConfigBase::Get and
203 wxConfigBase::Set).
204 */
205 void UseConfig(wxConfigBase* config,
206 const wxString& rootpath = wxEmptyString);
207
208 /**
209 Stores controllers setting (position of window etc.)
210 */
211 virtual void WriteCustomization(wxConfigBase* cfg,
212 const wxString& path = wxEmptyString);
213
214protected:
215
216 /**
217 This protected virtual method may be overridden so that when specifying the
218 @c wxHF_DIALOG style, the controller uses a different dialog.
219 */
220 virtual wxHtmlHelpDialog* CreateHelpDialog(wxHtmlHelpData* data);
221
222 /**
223 This protected virtual method may be overridden so that the controller
224 uses a different frame.
225 */
226 virtual wxHtmlHelpFrame* CreateHelpFrame(wxHtmlHelpData* data);
227};
228
229
230
231/**
232 @class wxHtmlModalHelp
233
234 This class uses wxHtmlHelpController to display help in a modal dialog.
235 This is useful on platforms such as wxMac where if you display help from a
236 modal dialog, the help window must itself be a modal dialog.
237
238 Create objects of this class on the stack, for example:
239
240 @code
241 // The help can be browsed during the lifetime of this object; when the
242 // user quits the help, program execution will continue.
243 wxHtmlModalHelp help(parent, "help", "My topic");
244 @endcode
245
246 @library{wxhtml}
247 @category{help,html}
248*/
249class wxHtmlModalHelp
250{
251public:
252 /**
253 The ctor.
254
255 @param parent
256 is the parent of the dialog.
257 @param helpFile
258 is the HTML help file to show.
259 @param topic
260 is an optional topic. If this is empty, the help contents will be shown.
261 @param style
262 is a combination of the flags described in the wxHtmlHelpController
263 documentation.
264 */
265 wxHtmlModalHelp(wxWindow* parent, const wxString& helpFile,
266 const wxString& topic = wxEmptyString,
267 int style = wxHF_DEFAULT_STYLE | wxHF_DIALOG | wxHF_MODAL);
268};
269