// 改变选中所有服务器
function changeSelectAllServer() {
    var checked = document.getElementById("server_select_all").checked;
    var items = document.getElementsByClassName("main_server_checkbox");
    //循环设置所有复选框状态
    for (var i = 0; i < items.length; i++) {
        items[i].checked = checked;
        if (items[i].getAttribute("ServerID")) {
            changeServerGroupCheck("main_server_" + items[i].getAttribute("ServerID"), checked);
        }
    }
}

// 服务器组选中状态改变
function changeServerGroupCheck(serverGroup, checked) {
    var OnlyServerID = document.getElementById("OnlyServerID").value;
    if (OnlyServerID != "1") {
        checked = false; // 非子服需要单独发送的，默认不选中
    }
    var items = document.getElementsByClassName(serverGroup);
    //循环设置所有复选框状态
    for (var i = 0; i < items.length; i++) {
        items[i].checked = checked;
    }
}

// 检查是否有服务器被选中
function checkHaveServerSelected(notice = true) {
    var inputs = document.getElementsByTagName("input");
    for (let i = 0; i < inputs.length; i++) {
        let elm = inputs[i];
        if (elm.type != "checkbox") {
            continue;
        }
        if (elm.id.slice(0, 16) != "server_checkbox_") {
            continue;
        }
        if (elm.checked) {
            return true;
        }
    }
    if (notice && gt) {
        alert(gt.gettext("请选择服务器"));
    }
    return false;
}