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https://github.com/GabsPuNs/Project-Zenith-Main.git
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64 lines
2.0 KiB
C++
64 lines
2.0 KiB
C++
#include "LuaElementInstancer.h"
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#include <RmlUi/Core/Log.h>
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#include <RmlUi/Core/Platform.h>
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#include <RmlUi/Lua/Interpreter.h>
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#include <RmlUi/Lua/LuaType.h>
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namespace Rml {
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namespace Lua {
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// This will be called from ElementInstancernew
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LuaElementInstancer::LuaElementInstancer(lua_State* L) : ElementInstancer(), ref_InstanceElement(LUA_NOREF)
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{
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if (lua_type(L, 1) != LUA_TFUNCTION && !lua_isnoneornil(L, 1))
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{
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Log::Message(Log::LT_ERROR, "The argument to ElementInstancer.new has to be a function or nil. You passed in a %s.", luaL_typename(L, 1));
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return;
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}
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PushFunctionsTable(L); // top of the table is now ELEMENTINSTANCERFUNCTIONS table
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lua_pushvalue(L, 1); // copy of the function
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ref_InstanceElement = luaL_ref(L, -2);
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lua_pop(L, 1); // pop the ELEMENTINSTANCERFUNCTIONS table
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}
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ElementPtr LuaElementInstancer::InstanceElement(Element* /*parent*/, const String& tag, const XMLAttributes& /*attributes*/)
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{
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lua_State* L = Interpreter::GetLuaState();
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int top = lua_gettop(L);
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ElementPtr ret = nullptr;
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if (ref_InstanceElement != LUA_REFNIL && ref_InstanceElement != LUA_NOREF)
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{
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PushFunctionsTable(L);
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lua_rawgeti(L, -1, ref_InstanceElement); // push the function
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lua_pushstring(L, tag.c_str()); // push the tag
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Interpreter::ExecuteCall(1, 1); // we pass in a string, and we want to get an Element back
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ret = std::move(*LuaType<ElementPtr>::check(L, -1));
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}
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else
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{
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Log::Message(Log::LT_WARNING, "Attempt to call the function for ElementInstancer.InstanceElement, the function does not exist.");
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}
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lua_settop(L, top);
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return ret;
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}
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void LuaElementInstancer::ReleaseElement(Element* element)
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{
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delete element;
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}
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void LuaElementInstancer::PushFunctionsTable(lua_State* L)
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{
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// make sure there is an area to save the function
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lua_getglobal(L, "ELEMENTINSTANCERFUNCTIONS");
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if (lua_isnoneornil(L, -1))
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{
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lua_newtable(L);
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lua_setglobal(L, "ELEMENTINSTANCERFUNCTIONS");
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lua_pop(L, 1); // pop the unsucessful getglobal
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lua_getglobal(L, "ELEMENTINSTANCERFUNCTIONS");
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}
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}
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} // namespace Lua
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} // namespace Rml
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