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 namespace {
  20
  21 string const getLabel(MenuItem const & mi)
  22 {
  23         string const shortcut = mi.shortcut();
  24         string label = mi.label();
  25
  26         label = subst(label, "&", "&&");
  27
  28         if (shortcut.empty())
  29                 return label;
  30
  31         string::size_type pos = label.find(shortcut);
  32         if (pos == string::npos)
  33                 return label;
  34         label.insert(pos, "&");
  35
  36         return label;
  37 }
  38
  39 }
  40
  41
  42 int createMenu(QMenuData * parent, MenuItem const * item, Menubar::Pimpl * owner)
  43 {
  44         // FIXME: leaks ??
  45         QLPopupMenu * pm = new QLPopupMenu(owner, item->submenuname());
  46         return parent->insertItem(getLabel(*item).c_str(), pm);
  47 }
  48
  49
  50 QLPopupMenu::QLPopupMenu(Menubar::Pimpl * owner, string const & name)
  51         : owner_(owner), name_(name)
  52 {
  53         connect(this, SIGNAL(aboutToShow()), this, SLOT(showing()));
  54 }
  55
  56
  57 bool QLPopupMenu::disabled(string const & name)
  58 {
  59         bool disable = true;
  60
  61         Menu tomenu;
  62         Menu const frommenu = owner_->backend().getMenu(name);
  63         owner_->backend().expand(frommenu, tomenu, owner_->view()->buffer());
  64         Menu::const_iterator m = tomenu.begin();
  65         Menu::const_iterator end = tomenu.end();
  66         for (; m != end; ++m) {
  67                 if (m->kind() == MenuItem::Submenu && !disabled(m->submenuname())) {
  68                         disable = false;
  69                 } else {
  70                         FuncStatus const status =
  71                                 owner_->view()->getLyXFunc().getStatus(m->action());
  72                         if (!status.disabled())
  73                                 disable = false;
  74                 }
  75         }
  76         return disable;
  77 }
  78
  79
  80 void QLPopupMenu::showing()
  81 {
  82         clear();
  83         Menu tomenu;
  84         Menu const frommenu = owner_->backend().getMenu(name_);
  85         owner_->backend().expand(frommenu, tomenu, owner_->view()->buffer());
  86         Menu::const_iterator m = tomenu.begin();
  87         Menu::const_iterator end = tomenu.end();
  88         for (; m != end; ++m) {
  89                 if (m->kind() == MenuItem::Separator) {
  90                         insertSeparator();
  91                 } else if (m->kind() == MenuItem::Submenu) {
  92                         int id(createMenu(this, m, owner_));
  93                         setItemEnabled(id, !disabled(m->submenuname()));
  94                 } else {
  95                         insertItem(getLabel(*m).c_str(), m->action());
  96                         FuncStatus const status =
  97                                 owner_->view()->getLyXFunc().getStatus(m->action());
  98                         setItemEnabled(m->action(), !status.disabled());
  99                         setItemChecked(m->action(), status.onoff(true));
 100                 }
 101         }
 102 }