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#include "stdafx.h"
#define MT_ENVIRONMENT "ENVIRONMENT"
extern PLUGININFOEX pluginInfoEx;
CMLuaEnvironment::CMLuaEnvironment(lua_State *_l) :
CMPluginBase(nullptr, pluginInfoEx),
L(_l)
{
}
CMLuaEnvironment::~CMLuaEnvironment()
{
KillModuleIcons(this);
KillModuleSounds(this);
KillModuleMenus(this);
KillModuleHotkeys(this);
KillObjectEventHooks(this);
KillObjectServices(this);
for (auto &it : m_hookRefs)
luaL_unref(L, LUA_REGISTRYINDEX, it.second);
for (auto &it : m_serviceRefs)
luaL_unref(L, LUA_REGISTRYINDEX, it.second);
}
CMLuaEnvironment* CMLuaEnvironment::GetEnvironment(lua_State *L)
{
if (!luaM_getenv(L))
return nullptr;
lua_rawgeti(L, -1, NULL);
CMLuaEnvironment *env = (CMLuaEnvironment*)lua_touserdata(L, -1);
lua_pop(L, 3);
return env;
}
HPLUGIN CMLuaEnvironment::GetEnvironmentId(lua_State *L)
{
CMLuaEnvironment *env = GetEnvironment(L);
return env != nullptr ? HPLUGIN(env) : &g_plugin;
}
static int HookEventEnvParam(void *obj, WPARAM wParam, LPARAM lParam, LPARAM param)
{
CMLuaEnvironment *env = (CMLuaEnvironment*)obj;
int ref = param;
lua_rawgeti(env->L, LUA_REGISTRYINDEX, ref);
if (wParam)
lua_pushlightuserdata(env->L, (void*)wParam);
else
lua_pushnil(env->L);
if (lParam)
lua_pushlightuserdata(env->L, (void*)lParam);
else
lua_pushnil(env->L);
luaM_pcall(env->L, 2, 1);
return lua_tointeger(env->L, -1);
}
HANDLE CMLuaEnvironment::HookEvent(const char *name, int ref)
{
HANDLE hHook = HookEventObjParam(name, HookEventEnvParam, this, ref);
if (hHook)
m_hookRefs[hHook] = ref;
return hHook;
}
int CMLuaEnvironment::UnhookEvent(HANDLE hEvent)
{
int res = ::UnhookEvent(hEvent);
if (res) {
auto it = m_hookRefs.find(hEvent);
if (it != m_hookRefs.end())
luaL_unref(L, LUA_REGISTRYINDEX, it->second);
}
return res;
}
static INT_PTR CreateServiceFunctionEnvParam(void *obj, WPARAM wParam, LPARAM lParam, LPARAM param)
{
CMLuaEnvironment *env = (CMLuaEnvironment*)obj;
int ref = param;
lua_rawgeti(env->L, LUA_REGISTRYINDEX, ref);
lua_pushlightuserdata(env->L, (void*)wParam);
lua_pushlightuserdata(env->L, (void*)lParam);
luaM_pcall(env->L, 2, 1);
INT_PTR res = lua_tointeger(env->L, 1);
lua_pushinteger(env->L, res);
return res;
}
HANDLE CMLuaEnvironment::CreateServiceFunction(const char *name, int ref)
{
HANDLE hService = CreateServiceFunctionObjParam(name, CreateServiceFunctionEnvParam, this, ref);
if (hService)
m_serviceRefs[hService] = ref;
return hService;
}
void CMLuaEnvironment::DestroyServiceFunction(HANDLE hService)
{
auto it = m_serviceRefs.find(hService);
if (it != m_serviceRefs.end())
luaL_unref(L, LUA_REGISTRYINDEX, it->second);
::DestroyServiceFunction(hService);
}
void CMLuaEnvironment::CreateEnvironmentTable()
{
lua_createtable(L, 1, 1);
lua_pushlightuserdata(L, this);
lua_rawseti(L, -2, NULL);
lua_pushvalue(L, -1);
lua_setfield(L, -2, "_G");
lua_createtable(L, 0, 2);
lua_pushliteral(L, MT_ENVIRONMENT);
lua_setfield(L, -2, "__metatable");
lua_getglobal(L, "_G");
lua_setfield(L, -2, "__index");
lua_setmetatable(L, -2);
}
int CMLuaEnvironment::Load()
{
luaL_checktype(L, -1, LUA_TFUNCTION);
CreateEnvironmentTable();
lua_setupvalue(L, -2, 1);
return lua_pcall(L, 0, 1, 0) == LUA_OK;
}
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