tobago-theme/tobago-theme-standard/src/main/npm/ts/tobago-file.ts

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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.
 */

namespace Tobago {

  class File {

    static init(element: HTMLElement) {
      for (const e of element.tobagoSelfOrQuerySelectorAll(".tobago-file-real")) {
        const real = <HTMLInputElement>e;
        real.addEventListener("change", function () {
          const pretty = <HTMLInputElement>real.parentElement.querySelector(".tobago-file-pretty");
          let text: string;
          if (real.multiple) {
            const format: string = real.dataset["tobagoFileMultiFormat"];
            text = format.replace("{}", real.files.length.toString());
          } else {
            text = <string>real.value;
            // remove path, if any. Some old browsers set the path, others like webkit uses the prefix "C:\path\".
            const pos: number = Math.max(text.lastIndexOf('/'), text.lastIndexOf('\\'));
            if (pos >= 0) {
              text = text.substr(pos + 1);
            }
          }
          pretty.value = text;
        });
        // click on the button (when using focus with keyboard)
        real.parentElement.querySelector("button").addEventListener("click", function () {
          real.click();
        });
        real.form.enctype = "multipart/form-data";
      }
    };
  }

  Listener.register(File.init, Phase.DOCUMENT_READY);
  Listener.register(File.init, Phase.AFTER_UPDATE);
}