dfm-8.x-1.16/js/dfm.textarea.js

(function ($, Drupal) {
  /**
   * @file
   * Integrates Dfm into textareas.
   */

  /**
   * Extend window.dfmEditor.
   */
  var DE = window.dfmEditor;

  /**
   * Creates a file insertion widget for a textarea.
   */
  DE.createTextareaWidget = function (textarea) {
    var $widget = $(
      '<div class="dfm-textarea-widget" data-textarea-id="' +
        textarea.id +
        '"><a class="insert-image" data-type="image" href="#">' +
        Drupal.t('Insert image') +
        '</a><a class="insert-link" data-type="link" href="#">' +
        Drupal.t('Insert file link') +
        '</a></div>',
    );
    $widget.find('a').on('click', DE.textareaWidgetClick);
    return $widget[0];
  };

  /**
   * Click handler for textarea widget links.
   */
  DE.textareaWidgetClick = function (e) {
    var q =
      'textarea_id=' +
      encodeURIComponent(this.parentNode.getAttribute('data-textarea-id'));
    DE.open('dfmEditor.sendtoTextarea', this.getAttribute('data-type'), q);
    e.preventDefault();
  };

  /**
   * DFM file handler for textarea widget.
   */
  DE.sendtoTextarea = function (File, win) {
    var dfm = win.dfm;
    var T = $('#' + dfm.urlParam('textarea_id'))[0];
    if (T) {
      var img = dfm.urlParam('type') === 'image';
      var selected = dfm.getSelectedItems();
      var html = DE.filesHtml(selected, img, DE.getTextareaSelection(T));
      DE.setTextareaSelection(T, html);
    }
    win.close();
  };

  /**
   * Gets textarea selection
   */
  DE.getTextareaSelection = function (T) {
    return T.selectionStart !== undefined
      ? T.value.substring(T.selectionStart, T.selectionEnd)
      : document.selection
      ? document.selection.createRange().text
      : '';
  };

  /**
   * Sets textarea selection
   */
  DE.setTextareaSelection = function (T, str) {
    try {
      T.focus();
      T.selectionStart !== undefined
        ? (T.value =
            T.value.substring(0, T.selectionStart) +
            str +
            T.value.substring(T.selectionEnd, T.value.length))
        : document.selection
        ? (document.selection.createRange().text = str)
        : (T.value += str);
    } catch (e) {}
  };

  /**
   * Drupal behavior to process dfm textareas.
   */
  Drupal.behaviors.dfmTextarea = {
    attach: function (context) {
      var $textareas = $('.dfm-textarea', context)
        .not('.dfm-textarea-processed')
        .addClass('dfm-textarea-processed');
      var textarea;
      for (var i = 0; (textarea = $textareas[i]); i++) {
        // Skip manually hidden textareas
        if (textarea.style.display !== 'none') {
          textarea.parentNode.appendChild(DE.createTextareaWidget(textarea));
        }
      }
    },
  };
})(jQuery, Drupal);