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/***************************************************************************
* Copyright (C) 2008-2012 by Andrzej Rybczak *
* electricityispower@gmail.com *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. *
***************************************************************************/
#ifndef _BINDINGS_H
#define _BINDINGS_H
#include <cassert>
#include "actions.h"
#include "macro_utilities.h"
/// Key for binding actions to it. Supports non-ascii characters.
struct Key
{
enum Type { Standard, NCurses };
Key(wchar_t ch, Type ct) : m_char(ch), m_type(ct) { }
wchar_t getChar() const {
return m_char;
}
Type getType() const {
return m_type;
}
# define KEYS_DEFINE_OPERATOR(CMP) \
bool operator CMP (const Key &k) const { \
if (m_char CMP k.m_char) \
return true; \
if (m_char != k.m_char) \
return false; \
return m_type CMP k.m_type; \
}
KEYS_DEFINE_OPERATOR(<);
KEYS_DEFINE_OPERATOR(<=);
KEYS_DEFINE_OPERATOR(>);
KEYS_DEFINE_OPERATOR(>=);
# undef KEYS_DEFINE_OPERATOR
bool operator==(const Key &k) const {
return m_char == k.m_char && m_type == k.m_type;
}
bool operator!=(const Key &k) const {
return !(*this == k);
}
static Key read(NC::Window &w);
static Key noOp;
private:
wchar_t m_char;
Type m_type;
};
/// Represents either single action or chain of actions bound to a certain key
struct Binding
{
typedef std::vector<Action *> ActionChain;
Binding(ActionType at) : m_is_single(true), m_action(Action::Get(at)) { }
Binding(const ActionChain &actions) {
assert(actions.size() > 0);
if (actions.size() == 1) {
m_is_single = true;
m_action = actions[0];
} else {
m_is_single = false;
m_chain = new ActionChain(actions);
}
}
bool isSingle() const {
return m_is_single;
}
ActionChain *chain() const {
assert(!m_is_single);
return m_chain;
}
Action *action() const {
assert(m_is_single);
return m_action;
}
private:
bool m_is_single;
union {
Action *m_action;
ActionChain *m_chain;
};
};
/// Keybindings configuration
struct BindingsConfiguration
{
typedef std::multimap<Key, Binding> BindingsMap;
typedef BindingsMap::iterator BindingIterator;
typedef BindingsMap::const_iterator ConstBindingIterator;
bool read(const std::string &file);
void generateDefaults();
std::pair<BindingIterator, BindingIterator> get(const Key &k) {
return m_bindings.equal_range(k);
}
ConstBindingIterator begin() const { return m_bindings.begin(); }
ConstBindingIterator end() const { return m_bindings.end(); }
private:
bool notBound(const Key &k) const {
return k != Key::noOp && m_bindings.find(k) == m_bindings.end();
}
template <typename T> void bind(Key k, T t) {
m_bindings.insert(std::make_pair(k, Binding(t)));
}
BindingsMap m_bindings;
};
extern BindingsConfiguration Bindings;
#endif // _BINDINGS_H
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