src/frontends/gtk/GMenubar.C

   1 /**
   2  * \file GMenubar.C
   3  * This file is part of LyX, the document processor.
   4  * Licence details can be found in the file COPYING.
   5  *
   6  * \author Huang Ying
   7  *
   8  * Full author contact details are available in file CREDITS.
   9  */
  10
  11 #include <config.h>
  12
  13 #include "GMenubar.h"
  14 #include "GView.h"
  15 #include "debug.h"
  16 #include "lyxfunc.h"
  17
  18 using std::string;
  19
  20 namespace lyx {
  21 namespace frontend {
  22
  23 namespace
  24 {
  25
  26 class LyxMenu : public Gtk::Menu {
  27 public:
  28         LyxMenu() { menu_.reset(new ::Menu); }
  29
  30         ::Menu& getBackMenu() { return *menu_.get(); }
  31
  32         void clearBackMenu() { menu_.reset(new ::Menu); }
  33 private:
  34         std::auto_ptr< ::Menu > menu_;
  35 };
  36
  37
  38 Glib::ustring labelTrans(string const & label, string const & shortcut)
  39 {
  40         string labelN = label;
  41         string::size_type i = label.find(shortcut);
  42         if (i == string::npos)
  43                 return Glib::locale_to_utf8(label);
  44         labelN.insert(i, "_");
  45         return Glib::locale_to_utf8(labelN);
  46 }
  47
  48
  49 void ClearMenu(Gtk::MenuShell * menu)
  50 {
  51         Gtk::Menu_Helpers::MenuList::iterator m = menu->items().begin();
  52         Gtk::Menu_Helpers::MenuList::iterator end = menu->items().end();
  53         Gtk::Menu * subMenu;
  54         for (; m != end; ++m) {
  55                 if ((subMenu = m->get_submenu()) != 0) {
  56                         ClearMenu(subMenu);
  57                         delete subMenu;
  58                 }
  59         }
  60         menu->items().clear();
  61 }
  62
  63
  64 }
  65
  66
  67 GMenubar::GMenubar(LyXView * lyxView, MenuBackend const & /*menuBackend*/) :
  68         view_(lyxView)
  69 {
  70         GView * gview = static_cast<GView*>(lyxView);
  71         Menu const & menu = menubackend.getMenubar();
  72         Menu::const_iterator i = menu.begin();
  73         Menu::const_iterator end = menu.end();
  74         for (; i != end; ++i) {
  75                 if (i->kind() != MenuItem::Submenu) {
  76                         lyxerr << "ERROR: GMenubar::createMenubar:"
  77                                 " only submenus can appear in a menubar"
  78                                << std::endl;
  79                         continue;
  80                 }
  81                 Gtk::Menu * gmenu = new LyxMenu;
  82                 menubar_.items().push_back(
  83                         Gtk::Menu_Helpers::MenuElem(
  84                                 labelTrans(i->label(), i->shortcut()),
  85                                 *gmenu));
  86                 menubar_.items().back().signal_activate().connect(
  87                         sigc::bind(sigc::mem_fun(*this, &GMenubar::onSubMenuActivate), &(*i),
  88                                    &menubar_.items().back()));
  89                 mainMenuNames_.push_back(i->submenuname());
  90         }
  91         menubar_.show();
  92         gview->getBox(GView::Top).children().push_back(
  93                 Gtk::Box_Helpers::Element(menubar_, Gtk::PACK_SHRINK));
  94 }
  95
  96
  97 GMenubar::~GMenubar()
  98 {
  99         ClearMenu(&menubar_);
 100 }
 101
 102
 103 void GMenubar::update()
 104 {
 105 }
 106
 107
 108 void GMenubar::openByName(string const & name)
 109 {
 110         Glib::ustring uname = Glib::locale_to_utf8(name);
 111         std::vector<Glib::ustring>::iterator it =
 112                 std::find(mainMenuNames_.begin(), mainMenuNames_.end(),
 113                           uname);
 114         if (it != mainMenuNames_.end()) {
 115                 Gtk::MenuItem& mitem = menubar_.items()[it - mainMenuNames_.begin()];
 116                 mitem.select();
 117                 mitem.activate();
 118                 return;
 119         }
 120         lyxerr << "GMenubar::openByName: menu "
 121                << name << " not found" << std::endl;
 122 }
 123
 124
 125 bool GMenubar::submenuDisabled(MenuItem const * item)
 126 {
 127         Menu & from = menubackend.getMenu(item->submenuname());
 128         Menu to;
 129         menubackend.expand(from, to, view_);
 130         Menu::const_iterator i = to.begin();
 131         Menu::const_iterator end = to.end();
 132         for (; i != end; ++i) {
 133                 switch (i->kind()) {
 134                 case MenuItem::Submenu:
 135                         if (!submenuDisabled(&(*i)))
 136                                 return false;
 137                         break;
 138                 case MenuItem::Command:
 139                 {
 140                         FuncStatus const flag =
 141                                 view_->getLyXFunc().getStatus(i->func());
 142                         if (flag.enabled())
 143                                 return false;
 144                         break;
 145                 }
 146                 default:
 147                         break;
 148                 }
 149         }
 150         return true;
 151 }
 152
 153
 154 void GMenubar::onSubMenuActivate(MenuItem const * item,
 155                                  Gtk::MenuItem * gitem)
 156 {
 157         Gtk::Menu * gmenu = gitem->get_submenu();
 158         ClearMenu(gmenu);
 159         LyxMenu * lyxmenu = static_cast<LyxMenu*>(gmenu);
 160         lyxmenu->clearBackMenu();
 161         Menu * fmenu = &menubackend.getMenu(item->submenuname());
 162         menubackend.expand(*fmenu, lyxmenu->getBackMenu(), view_);
 163         Menu::const_iterator i = lyxmenu->getBackMenu().begin();
 164         Menu::const_iterator end = lyxmenu->getBackMenu().end();
 165         Gtk::Menu * gmenu_new;
 166         for (; i != end; ++i) {
 167                 switch (i->kind()) {
 168                 case MenuItem::Submenu:
 169                         gmenu_new = new LyxMenu;
 170                         gmenu->items().push_back(
 171                                 Gtk::Menu_Helpers::MenuElem(
 172                                         labelTrans(i->label(), i->shortcut()),
 173                                         *gmenu_new));
 174                         gmenu->items().back().signal_activate().connect(
 175                                 sigc::bind(sigc::mem_fun(*this, &GMenubar::onSubMenuActivate),
 176                                            &(*i),
 177                                            &gmenu->items().back()));
 178                         if (submenuDisabled(&(*i)))
 179                                 gmenu->items().back().set_sensitive(false);
 180                         break;
 181                 case MenuItem::Command:
 182                 {
 183                         FuncStatus const flag =
 184                                 view_->getLyXFunc().getStatus(i->func());
 185                         bool on = flag.onoff(true);
 186                         bool off = flag.onoff(false);
 187
 188                         if (on || off) {
 189                                 gmenu->items().push_back(
 190                                         Gtk::Menu_Helpers::CheckMenuElem(
 191                                                 labelTrans(i->label(),
 192                                                            i->shortcut())));
 193                                 Gtk::CheckMenuItem& citem =
 194                                         static_cast<Gtk::CheckMenuItem&>(
 195                                                 gmenu->items().back());
 196                                 citem.set_active(on);
 197                         } else {
 198                                 //This is necessary because add_accel_label is protected,
 199                                 //and even if you subclass Gtk::MenuItem then add_accel_label
 200                                 //doesn't do what you'd expect.
 201                                 Gtk::MenuItem * item = Gtk::manage(new Gtk::MenuItem);
 202                                 Gtk::HBox * hbox = Gtk::manage(new Gtk::HBox);
 203                                 Gtk::Label * label1 = Gtk::manage(new Gtk::Label(
 204                                         labelTrans(i->label(), i->shortcut()), true));
 205                                 Gtk::Label * label2 = Gtk::manage(new Gtk::Label(
 206                                         "   " + i->binding(), false));
 207                                 hbox->pack_start(*label1, false, false, 0);
 208                                 hbox->pack_end(*label2, false, false, 0);
 209                                 item->add(*hbox);
 210
 211                                 gmenu->append(*item);
 212                                 item->show_all();
 213                         }
 214                         Gtk::MenuItem & item = gmenu->items().back();
 215                         item.signal_activate().connect(
 216                                 sigc::bind(sigc::mem_fun(*this, &GMenubar::onCommandActivate),
 217                                            &(*i), &item));
 218                         if (!flag.enabled())
 219                                 item.set_sensitive(false);
 220                         break;
 221                 }
 222                 case MenuItem::Separator:
 223                         gmenu->items().push_back(
 224                                 Gtk::Menu_Helpers::SeparatorElem());
 225                         break;
 226                 default:
 227                         lyxerr << "GMenubar::create_submenu: "
 228                                 "this should not happen" << std::endl;
 229                         break;
 230                 }
 231         }
 232 }
 233
 234
 235 void GMenubar::onCommandActivate(MenuItem const * item,
 236                                        Gtk::MenuItem * /*gitem*/)
 237 {
 238         view_->getLyXFunc().dispatch(item->func(), true);
 239 }
 240
 241 } // namespace frontend
 242 } // namespace lyx