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Allow for multiple accelerator alternatives
This needs some testing before it could go to 2.4.x eventually
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@ -64,6 +64,16 @@ These chars should be somehow used in your translations, however you'll have to
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invent your own working shortcuts for dialog and menu entries and resolve
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possible conflicts of the same shortcut chars in one menu...
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You will be informed about conflicts in the terminal if you try to access the
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menu.
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Note that, in the case of '|', if more than one character follows, this means
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that LyX will try each of them in turn and use the first one that is not yet
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used by another entry in the menu. That way, you can define alternative shortcuts
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in the case one works in one context only, and another one only in another. You
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can use this possibility also in translations, but please use it only if no
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single shortcut that fits could be found.
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Note also that there are already used global shortcuts (such as p k x c m s a)
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and you should avoid using these characters for first-level menu shortcuts.
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@ -650,7 +650,7 @@ Menuset
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Menu "context-edit-index"
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OptItem "Insert Subentry|n" "indexmacro-insert subentry"
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OptItem "Insert Sortkey|k" "indexmacro-insert sortkey"
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OptItem "Insert See Reference|c" "indexmacro-insert see"
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OptItem "Insert See Reference|cf" "indexmacro-insert see"
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OptItem "Insert See also Reference|a" "indexmacro-insert seealso"
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End
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@ -233,10 +233,19 @@ public:
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}
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/// The keyboard shortcut (usually underlined in the entry)
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QString shortcut() const
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/// If \p first is true, return only the first character
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/// if a multi-character string has been defined.
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QString shortcut(bool first = false) const
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{
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int const index = label_.lastIndexOf('|');
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return index == -1 ? QString() : label_.mid(index + 1);
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if (index == -1)
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return QString();
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QString accelerators = label_.mid(index + 1);
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if (accelerators.size() == 1)
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return accelerators;
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if (first)
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return accelerators.left(1);
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return accelerators;
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}
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/// The complete label, with label and shortcut separated by a '|'
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QString fulllabel() const { return label_; }
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@ -349,8 +358,12 @@ public:
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/// Checks the associated FuncRequest status before adding the
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/// menu item.
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void addWithStatusCheck(MenuItem const &);
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// Check whether the menu shortcuts are unique
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void checkShortcuts() const;
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/// Check whether the shortcut of \p mi are unique and valid, and report if not
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void checkShortcutUnique(MenuItem const & mi) const;
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/// Return true if a \p sc is a unique shortcut
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bool checkShortcut(QString const sc) const;
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/// Try to find a unique shortcut from a string of alternatives
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QString getBestShortcut(MenuItem const & mi) const;
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///
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void expandLastfiles();
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void expandDocuments();
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@ -760,28 +773,84 @@ void MenuDefinition::cat(MenuDefinition const & other)
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}
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void MenuDefinition::checkShortcuts() const
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QString MenuDefinition::getBestShortcut(MenuItem const & mi) const
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{
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// This is a quadratic algorithm, but we do not care because
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// menus are short enough
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for (const_iterator it1 = begin(); it1 != end(); ++it1) {
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QString shortcut = it1->shortcut();
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if (shortcut.isEmpty())
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continue;
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if (!it1->label().contains(shortcut))
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// This might be a string of accelerators, a single accelerator
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// or empty
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QString accelerators = mi.shortcut();
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QString const label = mi.label();
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if (accelerators.size() == 0)
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return QString();
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if (accelerators.size() == 1) {
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// check and report clashes
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checkShortcutUnique(mi);
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return accelerators;
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}
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for (int i = 0; i < accelerators.length(); i++)
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{
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// check each character in the string
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// and use the first that does not conflict
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QString const sc = accelerators.at(i);
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if (!label.contains(sc)) {
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// invalid shortcut. Report.
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LYXERR0("Menu warning: menu entry \""
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<< it1->label()
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<< label
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<< "\" does not contain shortcut `"
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<< sc << "'.");
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continue;
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}
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if (checkShortcut(sc))
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return sc;
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}
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// At this point, we found no non-conflicting one
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// issue a warning and omit the accelerator
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LYXERR0("Menu warning: All accelerators of menu entry "
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<< '"' << mi.fulllabel()
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<< "\" are already taken. Omitting shortcut.");
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return QString();
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}
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void MenuDefinition::checkShortcutUnique(MenuItem const & mi) const
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{
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// We know this might only be a single character or nothing
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QString const shortcut = mi.shortcut();
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QString const label = mi.label();
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if (shortcut.isEmpty())
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return;
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if (!label.contains(shortcut))
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// invalid shortcut
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LYXERR0("Menu warning: menu entry \""
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<< label
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<< "\" does not contain shortcut `"
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<< shortcut << "'.");
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for (const_iterator it2 = begin(); it2 != it1 ; ++it2) {
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if (!it2->shortcut().compare(shortcut, Qt::CaseInsensitive)) {
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for (const_iterator it = begin(); it != end() ; ++it) {
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if (mi.fulllabel() == it->fulllabel())
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// do not compare with itself
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continue;
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if (!it->shortcut().compare(shortcut, Qt::CaseInsensitive)) {
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// conflict
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LYXERR0("Menu warning: menu entries "
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<< '"' << it1->fulllabel()
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<< "\" and \"" << it2->fulllabel()
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<< '"' << it->fulllabel()
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<< "\" and \"" << mi.fulllabel()
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<< "\" share the same shortcut.");
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}
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}
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}
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bool MenuDefinition::checkShortcut(QString const shortcut) const
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{
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if (shortcut.isEmpty())
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return true;
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for (const_iterator it = begin(); it != end(); ++it) {
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if (it->shortcut(true).compare(shortcut, Qt::CaseInsensitive) == 0) {
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// conflict
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return false;
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}
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}
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// no conflict
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return true;
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}
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@ -2116,12 +2185,12 @@ struct Menu::Impl
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/// Get a MenuDefinition item label from the menu backend
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static QString label(MenuItem const & mi)
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static QString label(MenuItem const & mi, MenuDefinition const & menu)
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{
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QString label = mi.label();
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label.replace("&", "&&");
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QString shortcut = mi.shortcut();
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QString shortcut = menu.getBestShortcut(mi);
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if (!shortcut.isEmpty()) {
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int pos = label.indexOf(shortcut);
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if (pos != -1)
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@ -2158,7 +2227,7 @@ void Menu::Impl::populate(QMenu * qMenu, MenuDefinition const & menu)
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qMenu->addSeparator();
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break;
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case MenuItem::Submenu: {
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QMenu * subMenu = qMenu->addMenu(label(m));
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QMenu * subMenu = qMenu->addMenu(label(m, menu));
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populate(subMenu, m.submenu());
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subMenu->setEnabled(!subMenu->isEmpty());
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break;
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@ -2168,7 +2237,7 @@ void Menu::Impl::populate(QMenu * qMenu, MenuDefinition const & menu)
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// FIXME: A previous comment assured that MenuItem::Command was the
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// only possible case in practice, but this is wrong. It would be
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// good to document which cases are actually treated here.
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qMenu->addAction(new Action(m.func(), QIcon(), label(m),
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qMenu->addAction(new Action(m.func(), QIcon(), label(m, menu),
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m.tooltip(), qMenu));
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break;
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}
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@ -2529,9 +2598,6 @@ void Menus::Impl::expand(MenuDefinition const & frommenu,
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// we do not want the menu to end with a separator
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if (!tomenu.empty() && tomenu.items_.back().kind() == MenuItem::Separator)
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tomenu.items_.pop_back();
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// Check whether the shortcuts are unique
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tomenu.checkShortcuts();
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}
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@ -2700,7 +2766,7 @@ void Menus::fillMenuBar(QMenuBar * qmb, GuiView * view, bool initial)
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}
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Menu * menuptr = new Menu(view, m.submenuname(), true);
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menuptr->setTitle(label(m));
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menuptr->setTitle(label(m, menu));
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#if defined(Q_OS_MAC)
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// On Mac OS with Qt/Cocoa, the menu is not displayed if there is no action
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