src/frontends/qt2/QLPopupMenu.C

   1 /**
   2  * \file QLPopupMenu.h
   3  * Copyright 2002 the LyX Team
   4  * Read the file COPYING
   5  *
   6  * \author John Levon <levon@movementarian.org>
   7  */
   8
   9 #include "MenuBackend.h"
  10 #include "lyxfunc.h"
  11 #include "debug.h"
  12
  13 #include "QtView.h"
  14
  15 #include "QLPopupMenu.h"
  16
  17 #include "support/lstrings.h"
  18
  19 using std::pair;
  20 using std::make_pair;
  21
  22 namespace {
  23
  24 string const getLabel(MenuItem const & mi)
  25 {
  26         string const shortcut = mi.shortcut();
  27         string label = mi.label();
  28
  29         label = subst(label, "&", "&&");
  30
  31         if (shortcut.empty())
  32                 return label;
  33
  34         string::size_type pos = label.find(shortcut);
  35         if (pos == string::npos)
  36                 return label;
  37         label.insert(pos, "&");
  38
  39         return label;
  40 }
  41
  42 }
  43
  44
  45 pair<int, QLPopupMenu *> createMenu(QMenuData * parent, MenuItem const * item, Menubar::Pimpl * owner, bool is_toplevel)
  46 {
  47         // FIXME: leaks ??
  48         QLPopupMenu * pm = new QLPopupMenu(owner, item->submenuname(), is_toplevel);
  49         int id = parent->insertItem(getLabel(*item).c_str(), pm);
  50         return make_pair(id, pm);
  51 }
  52
  53
  54 QLPopupMenu::QLPopupMenu(Menubar::Pimpl * owner, string const & name, bool toplevel)
  55         : owner_(owner), name_(name)
  56 {
  57         if (toplevel)
  58                 connect(this, SIGNAL(aboutToShow()), this, SLOT(showing()));
  59 }
  60
  61
  62 bool QLPopupMenu::disabled(Menu * menu)
  63 {
  64         bool disable = true;
  65
  66         Menu::const_iterator m = menu->begin();
  67         Menu::const_iterator end = menu->end();
  68         for (; m != end; ++m) {
  69                 if (m->kind() == MenuItem::Submenu && !disabled(m->submenu())) {
  70                         disable = false;
  71                 } else {
  72                         FuncStatus const status =
  73                                 owner_->view()->getLyXFunc().getStatus(m->action());
  74                         if (!status.disabled())
  75                                 disable = false;
  76                 }
  77         }
  78         return disable;
  79 }
  80
  81
  82 void QLPopupMenu::populate(Menu * menu)
  83 {
  84         Menu::const_iterator m = menu->begin();
  85         Menu::const_iterator end = menu->end();
  86         for (; m != end; ++m) {
  87                 if (m->kind() == MenuItem::Separator) {
  88                         insertSeparator();
  89                 } else if (m->kind() == MenuItem::Submenu) {
  90                         pair<int, QLPopupMenu *> res = createMenu(this, m, owner_);
  91                         setItemEnabled(res.first, !disabled(m->submenu()));
  92                         res.second->populate(m->submenu());
  93                 } else {
  94                         FuncStatus const status =
  95                                 owner_->view()->getLyXFunc().getStatus(m->action());
  96                         if (status.disabled() && m->optional())
  97                                 continue;
  98                         insertItem(getLabel(*m).c_str(), m->action());
  99                         setItemEnabled(m->action(), !status.disabled());
 100                         setItemChecked(m->action(), status.onoff(true));
 101                 }
 102         }
 103 }
 104
 105
 106 void QLPopupMenu::showing()
 107 {
 108         clear();
 109         Menu tomenu;
 110         Menu const frommenu = owner_->backend().getMenu(name_);
 111         owner_->backend().expand(frommenu, tomenu, owner_->view()->buffer());
 112         populate(&tomenu);
 113 }