/*
 * Copyright 2024 Apollo Authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
appService.controller("BackTopController",
    ['$scope', BackTopController]);

function BackTopController($scope) {
    // scroll status
    $scope.isScroll = false;

    $scope.backToTop = function () {
        window.scrollTo(0, 0)
    }

    window.addEventListener("scroll", function () {
        if(!window.scrollY && $scope.isScroll) {
            $scope.isScroll = false
            document.body.click()
        }

        if(window.scrollY != 0 && !$scope.isScroll) {
            $scope.isScroll = true
            document.body.click()
        }
    })
}
