/*
 * Copyright (c) Baidu, Inc. All Rights Reserved.
 *
 * 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.
 *
 * 复制文本
 * @param text 要复制的内容
 * @returns {promise}
 */

function copyTextToClipboard(text: string) {
    return new Promise((resolve, reject) => {
        let successful = false;
        const textarea = document.createElement('textarea');
        textarea.style.background = 'transparent';
        textarea.setAttribute('readonly', 'readonly');
        textarea.value = text;
        document.body.appendChild(textarea);
        textarea.select();
        textarea.setSelectionRange(0, text.length);
        try {
            successful = document.execCommand('copy', false);
            if (successful) {
                resolve('复制成功');
            }
            else {
                reject(new Error('复制失败'));
            }
        }
        catch (err) {
            reject(err);
        }
        finally {
            document.body.removeChild(textarea);
        }
    });
}

export {
    copyTextToClipboard
};