lib/actions/action.cpp

   1 #include <lib/actions/action.h>
   2 #include <lib/base/init.h>
   3 #include <lib/base/init_num.h>
   4 #include <lib/actions/actionids.h>
   5
   6 /*
   7
   8   THIS CODE SUCKS.
   9
  10 we need:
  11  - contexts that aren't compared as strings,
  12  - maybe a lookup "device,key,flags" -> actions? (lazy validation, on bindAction)
  13  - devices as ids
  14  - seperate native from python keys? (currently, if an action wasn't found, it's ignored.)
  15
  16 Sorry. I spent 3 days on thinking how this could be made better, and it just DID NOT WORKED OUT.
  17
  18 If you have a better idea, please tell me.
  19
  20  */
  21
  22 DEFINE_REF(eActionMap);
  23
  24 eActionMap *eActionMap::instance;
  25
  26 eActionMap::eActionMap()
  27 {
  28         instance = this;
  29 }
  30
  31 eActionMap::~eActionMap()
  32 {
  33         instance = 0;
  34 }
  35
  36 RESULT eActionMap::getInstance(ePtr<eActionMap> &ptr)
  37 {
  38         ptr = instance;
  39         if (!ptr)
  40                 return -1;
  41         return 0;
  42 }
  43
  44 #if 0
  45 void eActionMap::getInstance(eActionMap **ptr)
  46 {
  47         *ptr = instance;
  48 }
  49 #endif
  50
  51 void eActionMap::bindAction(const std::string &context, int priority, int id, eWidget *widget)
  52 {
  53         eActionBinding bnd;
  54
  55         bnd.m_context = context;
  56         bnd.m_widget = widget;
  57         bnd.m_fnc = 0;
  58         bnd.m_id = id;
  59         m_bindings.insert(std::pair<int,eActionBinding>(priority, bnd));
  60 }
  61
  62 void eActionMap::bindAction(const std::string &context, int priority, PyObject *function)
  63 {
  64         eActionBinding bnd;
  65
  66         bnd.m_context = context;
  67         bnd.m_widget = 0;
  68         Py_INCREF(function);
  69         bnd.m_fnc = function;
  70         m_bindings.insert(std::pair<int,eActionBinding>(priority, bnd));
  71 }
  72
  73 void eActionMap::unbindAction(eWidget *widget, int id)
  74 {
  75         for (std::multimap<int, eActionBinding>::iterator i(m_bindings.begin()); i != m_bindings.end(); ++i)
  76                 if ((i->second.m_widget == widget) && (i->second.m_id == id))
  77                 {
  78                         m_bindings.erase(i);
  79                         return;
  80                 }
  81 }
  82
  83 void eActionMap::unbindAction(const std::string &context, PyObject *function)
  84 {
  85         for (std::multimap<int, eActionBinding>::iterator i(m_bindings.begin()); i != m_bindings.end(); ++i)
  86         {
  87                 if (i->second.m_fnc && (PyObject_Compare(i->second.m_fnc, function) == 0))
  88                 {
  89                         Py_DECREF(i->second.m_fnc);
  90                         m_bindings.erase(i);
  91                         return;
  92                 }
  93         }
  94         eFatal("unbindAction with illegal python reference");
  95 }
  96
  97
  98 void eActionMap::bindKey(const std::string &device, int key, int flags, const std::string &context, const std::string &action)
  99 {
 100                 // first, search the actionlist table
 101         unsigned int i;
 102         for (i=0; i<sizeof(actions)/sizeof(*actions); ++i)
 103         {
 104                 if ((actions[i].m_context == context) && (actions[i].m_action == action))
 105                 {
 106                                 // we found a native action.
 107                         eNativeKeyBinding bind;
 108                         bind.m_device = 0;
 109                         bind.m_key = key;
 110                         bind.m_flags = flags;
 111                         bind.m_action = actions[i].m_id;
 112                         m_native_keys.insert(std::pair<std::string,eNativeKeyBinding>(context, bind));
 113                         return;
 114                 }
 115         }
 116
 117                 // we didn't find the action, so it must be a pythonAction
 118         ePythonKeyBinding bind;
 119
 120         bind.m_device = 0;
 121         bind.m_key = key;
 122         bind.m_flags = flags;
 123         bind.m_action = action;
 124         m_python_keys.insert(std::pair<std::string,ePythonKeyBinding>(context, bind));
 125 }
 126
 127 struct call_entry
 128 {
 129         PyObject *m_fnc, *m_arg;
 130         eWidget *m_widget;
 131         void *m_widget_arg;
 132         call_entry(PyObject *fnc, PyObject *arg): m_fnc(fnc), m_arg(arg), m_widget(0), m_widget_arg(0) { }
 133         call_entry(eWidget *widget, void *arg): m_widget(widget), m_widget_arg(arg), m_fnc(0), m_arg(0) { }
 134 };
 135
 136 void eActionMap::keyPressed(int device, int key, int flags)
 137 {
 138         std::list<call_entry> call_list;
 139
 140                 /* iterate active contexts. */
 141         for (std::multimap<int,eActionBinding>::const_iterator c(m_bindings.begin()); c != m_bindings.end();)
 142         {
 143                 std::multimap<int,eActionBinding>::const_iterator i = c;
 144                 ++c;
 145                         /* is this a native context? */
 146                 if (i->second.m_widget)
 147                 {
 148                                 /* is this a named context, i.e. not the wildcard? */
 149                         if (i->second.m_context.size())
 150                         {
 151                                 std::multimap<std::string,eNativeKeyBinding>::const_iterator
 152                                         k = m_native_keys.lower_bound(i->second.m_context),
 153                                         e = m_native_keys.upper_bound(i->second.m_context);
 154
 155                                 for (; k != e; ++k)
 156                                 {
 157                                         if (
 158                                                 // (k->second.m_device == m_device) &&
 159                                                         (k->second.m_key == key) &&
 160                                                         (k->second.m_flags & (1<<flags)))
 161                                                 call_list.push_back(call_entry(i->second.m_widget, (void*)k->second.m_action));
 162                                 }
 163                         } else
 164                         {
 165                                         /* wildcard - get any keys. */
 166                                 if (i->second.m_widget->event(eWidget::evtKey, (void*)key, (void*)flags))
 167                                         return;
 168                         }
 169                 } else if (i->second.m_fnc)
 170                 {
 171                         if (i->second.m_context.size())
 172                         {
 173                                 std::multimap<std::string,ePythonKeyBinding>::const_iterator
 174                                         k = m_python_keys.lower_bound(i->second.m_context),
 175                                         e = m_python_keys.upper_bound(i->second.m_context);
 176
 177                                 for (; k != e;)
 178                                 {
 179                                         if (
 180                                                 // (k->second.m_device == m_device) &&
 181                                                 (k->second.m_key == key) &&
 182                                                 (k->second.m_flags & (1<<flags)))
 183                                         {
 184                                                 PyObject *pArgs = PyTuple_New(2);
 185                                                 PyTuple_SetItem(pArgs, 0, PyString_FromString(k->first.c_str()));
 186                                                 PyTuple_SetItem(pArgs, 1, PyString_FromString(k->second.m_action.c_str()));
 187                                                 ++k;
 188                                                 Py_INCREF(i->second.m_fnc);
 189                                                 call_list.push_back(call_entry(i->second.m_fnc, pArgs));
 190                                         } else
 191                                                 ++k;
 192                                 }
 193                         } else
 194                         {
 195                                 PyObject *pArgs = PyTuple_New(2);
 196                                 PyTuple_SetItem(pArgs, 0, PyInt_FromLong(key));
 197                                 PyTuple_SetItem(pArgs, 1, PyInt_FromLong(flags));
 198                                 Py_INCREF(i->second.m_fnc);
 199                                 call_list.push_back(call_entry(i->second.m_fnc, pArgs));
 200                         }
 201                 }
 202         }
 203
 204         int res = 0;
 205                         /* we need to iterate over all to not loose a reference */
 206         for (std::list<call_entry>::iterator i(call_list.begin()); i != call_list.end(); ++i)
 207         {
 208                 if (i->m_fnc)
 209                 {
 210                         if (!res)
 211                                 res = ePython::call(i->m_fnc, i->m_arg);
 212                         Py_DECREF(i->m_fnc);
 213                         Py_DECREF(i->m_arg);
 214                 } else if (i->m_widget)
 215                 {
 216                         if (!res)
 217                                 res = i->m_widget->event(eWidget::evtAction, 0, (void*)i->m_widget_arg);
 218                 }
 219         }
 220 }
 221
 222 eAutoInitPtr<eActionMap> init_eActionMap(eAutoInitNumbers::actions, "eActionMap");