src/frontends/qt2/QLPopupMenu.C

   1 /**
   2  * \file QLPopupMenu.h
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author John Levon
   7  *
   8  * Full author contact details are available in file CREDITS
   9  */
  10
  11 #include <config.h>
  12
  13 #ifdef __GNUG__
  14 #pragma implementation
  15 #endif
  16
  17 #include "MenuBackend.h"
  18 #include "lyxfunc.h"
  19 #include "debug.h"
  20
  21 #include "QtView.h"
  22
  23 #include "QLPopupMenu.h"
  24
  25 #include "support/lstrings.h"
  26
  27 using std::pair;
  28 using std::make_pair;
  29
  30 namespace {
  31
  32 string const getLabel(MenuItem const & mi)
  33 {
  34         string const shortcut = mi.shortcut();
  35         string label = mi.label();
  36
  37         label = subst(label, "&", "&&");
  38
  39         if (shortcut.empty())
  40                 return label;
  41
  42         string::size_type pos = label.find(shortcut);
  43         if (pos == string::npos)
  44                 return label;
  45         label.insert(pos, "&");
  46
  47         return label;
  48 }
  49
  50 }
  51
  52
  53 pair<int, QLPopupMenu *> createMenu(QMenuData * parent, MenuItem const * item, Menubar::Pimpl * owner, bool is_toplevel)
  54 {
  55         // FIXME: leaks ??
  56         QLPopupMenu * pm = new QLPopupMenu(owner, item->submenuname(), is_toplevel);
  57         int id = parent->insertItem(getLabel(*item).c_str(), pm);
  58         return make_pair(id, pm);
  59 }
  60
  61
  62 QLPopupMenu::QLPopupMenu(Menubar::Pimpl * owner, string const & name, bool toplevel)
  63         : owner_(owner), name_(name)
  64 {
  65         if (toplevel)
  66                 connect(this, SIGNAL(aboutToShow()), this, SLOT(showing()));
  67         connect(this, SIGNAL(activated(int)),
  68                 owner_->view(), SLOT(activated(int)));
  69 }
  70
  71
  72 bool QLPopupMenu::disabled(Menu * menu)
  73 {
  74         bool disable = true;
  75
  76         Menu::const_iterator m = menu->begin();
  77         Menu::const_iterator end = menu->end();
  78         for (; m != end; ++m) {
  79                 if (m->kind() == MenuItem::Submenu && !disabled(m->submenu())) {
  80                         disable = false;
  81                 } else {
  82                         FuncStatus const status =
  83                                 owner_->view()->getLyXFunc().getStatus(m->action());
  84                         if (!status.disabled())
  85                                 disable = false;
  86                 }
  87         }
  88         return disable;
  89 }
  90
  91
  92 void QLPopupMenu::populate(Menu * menu)
  93 {
  94         Menu::const_iterator m = menu->begin();
  95         Menu::const_iterator end = menu->end();
  96         for (; m != end; ++m) {
  97                 if (m->kind() == MenuItem::Separator) {
  98                         insertSeparator();
  99                 } else if (m->kind() == MenuItem::Submenu) {
 100                         pair<int, QLPopupMenu *> res = createMenu(this, &(*m), owner_);
 101                         setItemEnabled(res.first, !disabled(m->submenu()));
 102                         res.second->populate(m->submenu());
 103                 } else {
 104                         FuncStatus const status =
 105                                 owner_->view()->getLyXFunc().getStatus(m->action());
 106                         if (status.disabled() && m->optional())
 107                                 continue;
 108                         insertItem(getLabel(*m).c_str(), m->action());
 109                         setItemEnabled(m->action(), !status.disabled());
 110                         setItemChecked(m->action(), status.onoff(true));
 111                 }
 112         }
 113 }
 114
 115
 116 void QLPopupMenu::showing()
 117 {
 118         clear();
 119         Menu tomenu;
 120         Menu const frommenu = owner_->backend().getMenu(name_);
 121         owner_->backend().expand(frommenu, tomenu, owner_->view()->buffer());
 122         populate(&tomenu);
 123 }