src/LayoutFile.h

   1 // -*- C++ -*-
   2 /**
   3  * \file LayoutFile.h
   4  * This file is part of LyX, the document processor.
   5  * Licence details can be found in the file COPYING.
   6  *
   7  * \author Lars Gullik Bjønnes
   8  * \author Richard Heck (typedefs and such)
   9  *
  10  * Full author contact details are available in file CREDITS.
  11  */
  12
  13 #ifndef BASECLASSLIST_H
  14 #define BASECLASSLIST_H
  15
  16 #include "LayoutModuleList.h"
  17 #include "TextClass.h"
  18
  19 #include "support/strfwd.h"
  20
  21 #include <boost/noncopyable.hpp>
  22
  23 #include <set>
  24 #include <string>
  25 #include <vector>
  26
  27
  28 namespace lyx {
  29
  30 class Layout;
  31
  32 /// Reads the style files
  33 extern bool LyXSetStyle();
  34
  35
  36 /// Index into LayoutFileList. Basically a 'strong typedef'.
  37 class LayoutFileIndex {
  38 public:
  39         ///
  40         typedef std::string base_type;
  41         ///
  42         LayoutFileIndex(base_type t) { data_ = t; }
  43         ///
  44         operator base_type() const { return data_; }
  45         ///
  46         bool empty() const { return data_.empty(); }
  47 private:
  48         base_type data_;
  49 };
  50
  51 /// This class amounts to little more than a `strong typedef'.
  52 ///
  53 /// A LayoutFile represents the layout information that is
  54 /// contained in a *.layout file.
  55 ///
  56 /// No document- (that is, Buffer-) specific information should
  57 /// be placed in these objects. They are used as the basis for
  58 /// constructing DocumentClass objects, which are what represent
  59 /// the layout information associated with a Buffer. (This is also
  60 /// a subclass of TextClass, implemented in TextClass.{h,cpp}.)
  61 /// Buffer-specific information should therefore be placed in a
  62 /// DocumentClass object.
  63 ///
  64 class LayoutFile : public TextClass, boost::noncopyable {
  65 public:
  66         /// check whether the TeX class is available
  67         bool isTeXClassAvailable() const { return texClassAvail_; }
  68         ///
  69         LayoutModuleList const & defaultModules() const
  70                         { return default_modules_; }
  71         ///
  72         LayoutModuleList const & providedModules() const
  73                         { return provided_modules_; }
  74         ///
  75         LayoutModuleList const & excludedModules() const
  76                         { return excluded_modules_; }
  77 private:
  78         /// Construct a layout with default values. Actual values loaded later.
  79         explicit LayoutFile(std::string const & filename,
  80                         std::string const & className = std::string(),
  81                         std::string const & description = std::string(),
  82                         bool texClassAvail = false);
  83         /// The only class that should create a LayoutFile is
  84         /// LayoutFileList, which calls the private constructor.
  85         friend class LayoutFileList;
  86         /// can't create empty LayoutFile
  87         LayoutFile() {};
  88 };
  89
  90
  91 /// A list of base document classes (*.layout files).
  92 /// This is a singleton class. The sole instance is accessed
  93 /// via LayoutFileList::get()
  94 class LayoutFileList {
  95 public:
  96         ///
  97         LayoutFileList() {}
  98         ///
  99         ~LayoutFileList();
 100         /// \return The sole instance of this class.
 101         static LayoutFileList & get();
 102         ///
 103         bool empty() const { return classmap_.empty(); }
 104         ///
 105         bool haveClass(std::string const & classname) const;
 106         /// Note that this will assert if we don't have classname, so
 107         /// check via haveClass() first.
 108         LayoutFile const & operator[](std::string const & classname) const;
 109         /// Note that this will assert if we don't have classname, so
 110         /// check via haveClass() first.
 111         LayoutFile & operator[](std::string const & classname);
 112         /// Read textclass list. Returns false if this fails.
 113         bool read();
 114         /// Clears the textclass so as to force it to be reloaded
 115         void reset(LayoutFileIndex const & tc);
 116
 117         /// add a default textclass with all standard layouts.
 118         LayoutFileIndex addEmptyClass(std::string const & textclass);
 119
 120         /// add a textclass from user local directory.
 121         /// \return the identifier for the loaded file, or else an
 122         /// empty string if no file was loaded.
 123         LayoutFileIndex
 124                 addLocalLayout(std::string const & textclass, std::string const & path);
 125         /// a list of the available classes
 126         std::vector<LayoutFileIndex> classList() const;
 127
 128         ///
 129         bool load(std::string const & name, std::string const & buf_path);
 130
 131 private:
 132         ///
 133         typedef std::map<std::string, LayoutFile *> ClassMap;
 134         /// noncopyable
 135         LayoutFileList(LayoutFileList const &);
 136         /// nonassignable
 137         void operator=(LayoutFileList const &);
 138         ///
 139         mutable ClassMap classmap_; //FIXME
 140 };
 141
 142 ///
 143 LayoutFileIndex defaultBaseclass();
 144
 145
 146 } // namespace lyx
 147
 148 #endif