LuatOS/components/easylvgl/binding/luat_lib_easylvgl_tabview.c

/*
@module  easylvgl.tabview
@summary EasyLVGL TabView 组件
@version 0.1.0
@date    2025.12.26
@tag     LUAT_USE_EASYLVGL
*/

#include "luat_base.h"
#include "lua.h"
#include "lauxlib.h"
#include "../inc/luat_easylvgl.h"
#include "../inc/luat_easylvgl_component.h"
#include "../inc/luat_easylvgl_binding.h"

#define EASYLVGL_TABVIEW_MT "easylvgl.tabview"

static int l_easylvgl_tabview(lua_State *L) {
    easylvgl_ctx_t *ctx = NULL;
    lua_getfield(L, LUA_REGISTRYINDEX, "easylvgl_ctx");
    if (lua_type(L, -1) == LUA_TLIGHTUSERDATA) {
        ctx = (easylvgl_ctx_t *)lua_touserdata(L, -1);
    }
    lua_pop(L, 1);

    if (ctx == NULL) {
        luaL_error(L, "easylvgl not initialized, call easylvgl.init() first");
        return 0;
    }

    luaL_checktype(L, 1, LUA_TTABLE);

    lv_obj_t *tabview = easylvgl_tabview_create_from_config(L, 1);
    if (tabview == NULL) {
        lua_pushnil(L);
        return 1;
    }

    easylvgl_push_component_userdata(L, tabview, EASYLVGL_TABVIEW_MT);
    return 1;
}

static int l_tabview_set_active(lua_State *L) {
    lv_obj_t *tabview = easylvgl_check_component(L, 1, EASYLVGL_TABVIEW_MT);
    int index = luaL_checkinteger(L, 2);
    easylvgl_tabview_set_active(tabview, index);
    return 0;
}

static int l_tabview_get_content(lua_State *L) {
    lv_obj_t *tabview = easylvgl_check_component(L, 1, EASYLVGL_TABVIEW_MT);
    int index = luaL_checkinteger(L, 2);
    lv_obj_t *page = easylvgl_tabview_get_content(tabview, index);
    if (page == NULL) {
        lua_pushnil(L);
        return 1;
    }
    easylvgl_component_ud_t *ud = (easylvgl_component_ud_t *)lua_newuserdata(L, sizeof(easylvgl_component_ud_t));
    ud->obj = page;
    return 1;
}

static int l_tabview_set_on_change(lua_State *L) {
    lv_obj_t *tabview = easylvgl_check_component(L, 1, EASYLVGL_TABVIEW_MT);
    luaL_checktype(L, 2, LUA_TFUNCTION);
    lua_pushvalue(L, 2);
    int ref = luaL_ref(L, LUA_REGISTRYINDEX);
    easylvgl_component_meta_t *meta = easylvgl_component_meta_get(tabview);
    if (meta != NULL) {
        easylvgl_component_bind_event(meta, EASYLVGL_EVENT_VALUE_CHANGED, ref);
    } else {
        luaL_unref(L, LUA_REGISTRYINDEX, ref);
    }
    return 0;
}

static int l_tabview_gc(lua_State *L) {
    easylvgl_component_ud_t *ud = (easylvgl_component_ud_t *)luaL_checkudata(L, 1, EASYLVGL_TABVIEW_MT);
    if (ud != NULL && ud->obj != NULL) {
        easylvgl_component_meta_t *meta = easylvgl_component_meta_get(ud->obj);
        if (meta != NULL) {
            easylvgl_tabview_release_data(meta);
            easylvgl_component_meta_free(meta);
        }
        lv_obj_delete(ud->obj);
        ud->obj = NULL;
    }
    return 0;
}

void easylvgl_register_tabview_meta(lua_State *L) {
    luaL_newmetatable(L, EASYLVGL_TABVIEW_MT);
    lua_pushcfunction(L, l_tabview_gc);
    lua_setfield(L, -2, "__gc");

    static const luaL_Reg methods[] = {
        {"set_active", l_tabview_set_active},
        {"get_content", l_tabview_get_content},
        {"set_on_change", l_tabview_set_on_change},
        {NULL, NULL}
    };

    luaL_newlib(L, methods);
    lua_setfield(L, -2, "__index");
    lua_pop(L, 1);
}

int easylvgl_tabview_create(lua_State *L) {
    return l_easylvgl_tabview(L);
}