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 void eActionMap::bindAction(const std::string &context, int priority, int id, eWidget *widget)
  45 {
  46         eActionBinding bnd;
  47
  48         bnd.m_context = context;
  49         bnd.m_widget = widget;
  50         bnd.m_id = id;
  51         m_bindings.insert(std::pair<int,eActionBinding>(priority, bnd));
  52 }
  53
  54 void eActionMap::bindAction(const std::string &context, int priority, ePyObject function)
  55 {
  56         eActionBinding bnd;
  57
  58         bnd.m_context = context;
  59         bnd.m_widget = 0;
  60         Py_INCREF(function);
  61         bnd.m_fnc = function;
  62         m_bindings.insert(std::pair<int,eActionBinding>(priority, bnd));
  63 }
  64
  65 void eActionMap::unbindAction(eWidget *widget, int id)
  66 {
  67         for (std::multimap<int, eActionBinding>::iterator i(m_bindings.begin()); i != m_bindings.end(); ++i)
  68                 if ((i->second.m_widget == widget) && (i->second.m_id == id))
  69                 {
  70                         m_bindings.erase(i);
  71                         return;
  72                 }
  73 }
  74
  75 void eActionMap::unbindAction(const std::string &context, ePyObject function)
  76 {
  77         for (std::multimap<int, eActionBinding>::iterator i(m_bindings.begin()); i != m_bindings.end(); ++i)
  78         {
  79                 if (i->second.m_fnc && (PyObject_Compare(i->second.m_fnc, function) == 0))
  80                 {
  81                         Py_DECREF(i->second.m_fnc);
  82                         m_bindings.erase(i);
  83                         return;
  84                 }
  85         }
  86         eFatal("unbindAction with illegal python reference");
  87 }
  88
  89
  90 void eActionMap::bindKey(const std::string &device, int key, int flags, const std::string &context, const std::string &action)
  91 {
  92                 // first, search the actionlist table
  93         unsigned int i;
  94         for (i=0; i<sizeof(actions)/sizeof(*actions); ++i)
  95         {
  96                 if ((actions[i].m_context == context) && (actions[i].m_action == action))
  97                 {
  98                                 // we found a native action.
  99                         eNativeKeyBinding bind;
 100                         bind.m_device = device;
 101                         bind.m_key = key;
 102                         bind.m_flags = flags;
 103                         bind.m_action = actions[i].m_id;
 104                         m_native_keys.insert(std::pair<std::string,eNativeKeyBinding>(context, bind));
 105                         return;
 106                 }
 107         }
 108
 109                 // we didn't find the action, so it must be a pythonAction
 110         ePythonKeyBinding bind;
 111
 112         bind.m_device = device;
 113         bind.m_key = key;
 114         bind.m_flags = flags;
 115         bind.m_action = action;
 116         m_python_keys.insert(std::pair<std::string,ePythonKeyBinding>(context, bind));
 117 }
 118
 119 struct call_entry
 120 {
 121         ePyObject m_fnc, m_arg;
 122         eWidget *m_widget;
 123         void *m_widget_arg, *m_widget_arg2;
 124         call_entry(ePyObject fnc, ePyObject arg): m_fnc(fnc), m_arg(arg), m_widget(0), m_widget_arg(0) { }
 125         call_entry(eWidget *widget, void *arg, void *arg2): m_widget(widget), m_widget_arg(arg), m_widget_arg2(arg2) { }
 126 };
 127
 128 void eActionMap::keyPressed(const std::string &device, int key, int flags)
 129 {
 130         std::list<call_entry> call_list;
 131
 132                 /* iterate active contexts. */
 133         for (std::multimap<int,eActionBinding>::const_iterator c(m_bindings.begin());
 134                 c != m_bindings.end(); ++c)
 135         {
 136                         /* is this a native context? */
 137                 if (c->second.m_widget)
 138                 {
 139                                 /* is this a named context, i.e. not the wildcard? */
 140                         if (c->second.m_context.size())
 141                         {
 142                                 std::multimap<std::string,eNativeKeyBinding>::const_iterator
 143                                         k = m_native_keys.lower_bound(c->second.m_context),
 144                                         e = m_native_keys.upper_bound(c->second.m_context);
 145
 146                                 for (; k != e; ++k)
 147                                 {
 148                                         if (
 149                                                         (k->second.m_key == key) &&
 150                                                         (k->second.m_flags & (1<<flags)) &&
 151                                                   ((k->second.m_device == device) || (k->second.m_device == "generic"))
 152                                                   )
 153                                                 call_list.push_back(call_entry(c->second.m_widget, (void*)c->second.m_id, (void*)k->second.m_action));
 154                                 }
 155                         } else
 156                         {
 157                                         /* wildcard - get any keys. */
 158                                 if (c->second.m_widget->event(eWidget::evtKey, (void*)key, (void*)flags))
 159                                         return;
 160                         }
 161                 } else if (c->second.m_fnc)
 162                 {
 163                         if (c->second.m_context.size())
 164                         {
 165                                 std::multimap<std::string,ePythonKeyBinding>::const_iterator
 166                                         k = m_python_keys.lower_bound(c->second.m_context),
 167                                         e = m_python_keys.upper_bound(c->second.m_context);
 168
 169                                 for (; k != e; ++k)
 170                                 {
 171                                         if (
 172                                                 (k->second.m_key == key) &&
 173                                                 (k->second.m_flags & (1<<flags)) &&
 174                                                 ((k->second.m_device == device) || (k->second.m_device == "generic"))
 175                                                 )
 176                                         {
 177                                                 ePyObject pArgs = PyTuple_New(2);
 178                                                 PyTuple_SET_ITEM(pArgs, 0, PyString_FromString(k->first.c_str()));
 179                                                 PyTuple_SET_ITEM(pArgs, 1, PyString_FromString(k->second.m_action.c_str()));
 180                                                 Py_INCREF(c->second.m_fnc);
 181                                                 call_list.push_back(call_entry(c->second.m_fnc, pArgs));
 182                                         }
 183                                 }
 184                         } else
 185                         {
 186                                 eDebug("wildcard.");
 187                                 ePyObject pArgs = PyTuple_New(2);
 188                                 PyTuple_SET_ITEM(pArgs, 0, PyInt_FromLong(key));
 189                                 PyTuple_SET_ITEM(pArgs, 1, PyInt_FromLong(flags));
 190                                 Py_INCREF(c->second.m_fnc);
 191                                 call_list.push_back(call_entry(c->second.m_fnc, pArgs));
 192                         }
 193                 }
 194         }
 195
 196         int res = 0;
 197                         /* we need to iterate over all to not loose a reference */
 198         for (std::list<call_entry>::iterator i(call_list.begin()); i != call_list.end(); ++i)
 199         {
 200                 if (i->m_fnc)
 201                 {
 202                         if (!res)
 203                                 res = ePython::call(i->m_fnc, i->m_arg);
 204                         Py_DECREF(i->m_fnc);
 205                         Py_DECREF(i->m_arg);
 206                 } else if (i->m_widget && !res)
 207                         res = i->m_widget->event(eWidget::evtAction, (void*)i->m_widget_arg, (void*)i->m_widget_arg2 );
 208         }
 209 }
 210
 211 ePtr<eActionMap> NewActionMapPtr(void)
 212 {
 213         ePtr<eActionMap> ptr;
 214         eActionMap::getInstance(ptr);
 215         return ptr;
 216 }
 217
 218 eAutoInitPtr<eActionMap> init_eActionMap(eAutoInitNumbers::actions, "eActionMap");