1 // -*- C++ -*-
2 /**
3  * \file InsetInfo.h
4  * This file is part of LyX, the document processor.
5  * Licence details can be found in the file COPYING.
6  *
7  * \author Bo Peng
8  *
9  * Full author contact details are available in file CREDITS.
10  */
11 
12 #ifndef INSET_INFO_H
13 #define INSET_INFO_H
14 
15 #include "InsetCollapsible.h"
16 
17 namespace lyx {
18 
19 class Cursor;
20 
21 /* InsetInfo displays shortcuts, lyxrc, package and textclass
22 availability and menu information in a non-editable boxed InsetText.
23 
24 Output of such an inset may vary from system to system, depending
25 on LyX and LaTeX configurations. Two LyX help files, LaTeXConfig.lyx
26 and Shortcuts.lyx make heavy use of this inset. The former uses it
27 to display the availability of packages and textclasses, the latter
28 uses it to display currently used shortcuts.
29 
30 This inset has two arguments: the type and argument of the information. The
31 screen and latex output is the content of the information. An InsetInfo can
32 have type "shortcuts", "shortcut", "lyxrc", "package", "textclass", "menu",
33 or "buffer". Arguments and outputs vary by type.
34 
35 shortcuts: argument of this type of InsetInfo is the name of the LFUN such as
36     "math-insert \alpha". The syntax is the same as what is used in the bind
37     and ui files. The output of this inset is all shortcuts for this LFUN
38     separated by comma.
39 
40 shortcut: the same as shortcuts, but only output the last shortcut.
41 
42 lyxrc: argument is the name of the rc entry such as "bind_file". Look in
43     src/LyXRC.h for available entries. The output is the content of this RC
44     entry.
45 
46 package: argument is the name of a latex package such as "listings". The
47     output is "yes" or "no", indicating the availability of this package.
48 
49 textclass: argument is the name a textclass such as "article". The output is
50     "yes" or "no", indicating the availability of this textclass.
51 
52 menu: argument is the name of the LFUN such as "paste". The syntax is the same
53     as what is used in the bind and ui files. The output is the menu item that
54     triggers this LFUN. For example, "File > Paste", where '>' is actually
55     \lyxarrow (an InsetSpecialChar).
56 
57 icon: argument is the name of the LFUN such as "paste". The syntax is the same
58     as what is used in the bind and ui files. The output is the icon use in
59     the toolbar for this LFUN. Alternatively, argument can be the icon path
60     without extension specified with respect to the images directory.
61 
62 buffer: argument can be one of "name", "path", "class". This inset output the
63     filename, path, and textclass of this buffer.
64 
65 lyxinfo: argument must (presently) be "version". This inset outputs information
66 		about the version of LyX currently in use.
67 
68 There is currently no GUI, no menu entry for this inset. A user can define a
69 shortcut for "info-insert" (e.g. C-S-I), and
70 
71 1. input the type and argument of this inset, e.g. "menu paste", in
72    the work area.
73 2. select the text and run "info-insert" (e.g. press C-S-I).
74 
75 An alternative method is to enter command "info-insert type arg" in
76 the command buffer (view->Toolbar->Command Buffer).
77 
78 */
79 
80 class InsetInfo : public InsetCollapsible {
81 public:
82 	enum info_type {
83 		UNKNOWN_INFO,   // Invalid type
84 		SHORTCUTS_INFO, // Keyboard shortcuts
85 		SHORTCUT_INFO,  // Keyboard shortcut
86 		LYXRC_INFO,     // RC entry
87 		PACKAGE_INFO,   // Availability of package
88 		TEXTCLASS_INFO, // Availability of textclass
89 		MENU_INFO,      // Which menu item is used for certain function
90 		ICON_INFO,      // which toolbar icon is used for certain function
91 		BUFFER_INFO,    // Buffer related information
92 		LYX_INFO        // LyX version information
93 	};
94 
95 	///
96 	InsetInfo(Buffer * buf, std::string const & info = std::string());
97 	///
lyxCode()98 	InsetCode lyxCode() const { return INFO_CODE; }
99 	///
100 	docstring layoutName() const;
101 	///
102 	Inset * editXY(Cursor & cur, int x, int y);
103 	/** FIXME: we would like to do that, but then InsetText::updateBuffer breaks
104 	 * on info insets. Do we need to run this method on InsetInfo contents?
105 	 * Having a InsetInfo that hides an InsetText is really annoying, actually.
106 	 */
107 	///bool isActive() const { return false; }
108 	///
editable()109 	bool editable() const { return false; }
110 	///
hasSettings()111 	bool hasSettings() const { return true; }
112 	///
113 	void read(Lexer & lex);
114 	///
115 	void write(std::ostream & os) const;
116 	///
117 	std::string infoType() const;
118 	///
infoName()119 	std::string infoName() const { return name_; }
120 	///
121 	bool validateModifyArgument(docstring const & argument) const;
122 	///
123 	bool showInsetDialog(BufferView * bv) const;
124 	///
125 	bool getStatus(Cursor &, FuncRequest const &, FuncStatus &) const;
126 	///
127 	void doDispatch(Cursor & cur, FuncRequest & cmd);
128 	/// Force inset into LTR environment if surroundings are RTL
129 	bool forceLTR(OutputParams const &) const;
130 	///
131 	void setInfo(std::string const & info);
132 	/// update info_ and text
133 	void updateInfo();
134 	///
135 	docstring toolTip(BufferView const & bv, int x, int y) const;
136 	///
137 	std::string contextMenu(BufferView const &, int, int) const;
138 	///
139 	std::string contextMenuName() const;
140 	/// should paragraph indendation be omitted in any case?
neverIndent()141 	bool neverIndent() const { return true; }
142 
143 private:
144 	///
clone()145 	virtual Inset * clone() const { return new InsetInfo(*this); }
146 	///
147 	void error(std::string const & err);
148 	///
149 	void setText(docstring const & str);
150 	// make sure that the other version of setText is still available.
151 	using InsetCollapsible::setText;
152 	///
153 	info_type type_;
154 	///
155 	std::string name_;
156 	///
157 	bool force_ltr_;
158 };
159 
160 
161 } // namespace lyx
162 
163 #endif
164