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Editing: form_utils.js

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/**
 * form_utils.js
 *
 * Released under LGPL License.
 * Copyright (c) 1999-2017 Ephox Corp. All rights reserved
 *
 * License: http://www.tinymce.com/license
 * Contributing: http://www.tinymce.com/contributing
 */

var themeBaseURL = tinyMCEPopup.editor.baseURI.toAbsolute('themes/' + tinyMCEPopup.getParam("theme"));

function getColorPickerHTML(id, target_form_element) {
  var h = "", dom = tinyMCEPopup.dom;

if (label = dom.select('label[for=' + target_form_element + ']')[0]) {
    label.id = label.id || dom.uniqueId();
  }

h += '<a role="button" aria-labelledby="' + id + '_label" id="' + id + '_link" href="javascript:;" onclick="tinyMCEPopup.pickColor(event,\'' + target_form_element + '\');" onmousedown="return false;" class="pickcolor">';
 h += '&nbsp;' + tinyMCEPopup.getLang('browse') + '</a>';

return h;
}

function updateColor(img_id, form_element_id) {
  document.getElementById(img_id).style.backgroundColor = document.forms[0].elements[form_element_id].value;
}

function setBrowserDisabled(id, state) {
  var img = document.getElementById(id);
  var lnk = document.getElementById(id + "_link");

if (lnk) {
    if (state) {
      lnk.setAttribute("realhref", lnk.getAttribute("href"));
      lnk.removeAttribute("href");
      tinyMCEPopup.dom.addClass(img, 'disabled');
    } else {
      if (lnk.getAttribute("realhref")) {
        lnk.setAttribute("href", lnk.getAttribute("realhref"));
      }

tinyMCEPopup.dom.removeClass(img, 'disabled');
    }
  }
}

function getBrowserHTML(id, target_form_element, type, prefix) {
  var option = prefix + "_" + type + "_browser_callback", cb, html;

cb = tinyMCEPopup.getParam(option, tinyMCEPopup.getParam("file_browser_callback"));

if (!cb) {
    return "";
  }

html = "";
 html += '<a id="' + id + '_link" href="javascript:openBrowser(\'' + id + '\',\'' + target_form_element + '\', \'' + type + '\',\'' + option + '\');" onmousedown="return false;" class="browse">';
 html += '&nbsp;</a>';

return html;
}

function openBrowser(img_id, target_form_element, type, option) {
  var img = document.getElementById(img_id);

if (img.className != "mceButtonDisabled") {
    tinyMCEPopup.openBrowser(target_form_element, type, option);
  }
}

function selectByValue(form_obj, field_name, value, add_custom, ignore_case) {
  if (!form_obj || !form_obj.elements[field_name]) {
    return;
  }

if (!value) {
    value = "";
  }

var sel = form_obj.elements[field_name];

var found = false;
 for (var i = 0; i < sel.options.length; i++) {
 var option = sel.options[i];

if (option.value == value || (ignore_case && option.value.toLowerCase() == value.toLowerCase())) {
      option.selected = true;
      found = true;
    } else {
      option.selected = false;
    }
  }

if (!found && add_custom && value != '') {
    var option = new Option(value, value);
    option.selected = true;
    sel.options[sel.options.length] = option;
    sel.selectedIndex = sel.options.length - 1;
  }

return found;
}

function getSelectValue(form_obj, field_name) {
  var elm = form_obj.elements[field_name];

if (elm == null || elm.options == null || elm.selectedIndex === -1) {
    return "";
  }

return elm.options[elm.selectedIndex].value;
}

function addSelectValue(form_obj, field_name, name, value) {
  var s = form_obj.elements[field_name];
  var o = new Option(name, value);
  s.options[s.options.length] = o;
}

function addClassesToList(list_id, specific_option) {
  // Setup class droplist
  var styleSelectElm = document.getElementById(list_id);
  var styles = tinyMCEPopup.getParam('theme_advanced_styles', false);
  styles = tinyMCEPopup.getParam(specific_option, styles);

if (styles) {
    var stylesAr = styles.split(';');

for (var i = 0; i < stylesAr.length; i++) {
 if (stylesAr != "") {
 var key, value;

key = stylesAr[i].split('=')[0];
        value = stylesAr[i].split('=')[1];

styleSelectElm.options[styleSelectElm.length] = new Option(key, value);
      }
    }
  } else {
    /*tinymce.each(tinyMCEPopup.editor.dom.getClasses(), function(o) {
    styleSelectElm.options[styleSelectElm.length] = new Option(o.title || o['class'], o['class']);
    });*/
  }
}

function isVisible(element_id) {
  var elm = document.getElementById(element_id);

return elm && elm.style.display != "none";
}

function convertRGBToHex(col) {
  var re = new RegExp("rgb\\s*\$\\s*([0-9]+).*,\\s*([0-9]+).*,\\s*([0-9]+).*\$", "gi");

var rgb = col.replace(re, "$1,$2,$3").split(',');
  if (rgb.length == 3) {
    r = parseInt(rgb[0]).toString(16);
    g = parseInt(rgb[1]).toString(16);
    b = parseInt(rgb[2]).toString(16);

r = r.length == 1 ? '0' + r : r;
    g = g.length == 1 ? '0' + g : g;
    b = b.length == 1 ? '0' + b : b;

return "#" + r + g + b;
  }

return col;
}

function convertHexToRGB(col) {
  if (col.indexOf('#') != -1) {
    col = col.replace(new RegExp('[^0-9A-F]', 'gi'), '');

r = parseInt(col.substring(0, 2), 16);
    g = parseInt(col.substring(2, 4), 16);
    b = parseInt(col.substring(4, 6), 16);

return "rgb(" + r + "," + g + "," + b + ")";
  }

return col;
}

function trimSize(size) {
  return size.replace(/([0-9\.]+)(px|%|in|cm|mm|em|ex|pt|pc)/i, '$1$2');
}

function getCSSSize(size) {
  size = trimSize(size);

if (size == "") {
    return "";
  }

// Add px
  if (/^[0-9]+$/.test(size)) {
    size += 'px';
  }
  // Confidence check, IE doesn't like broken values
  else if (!(/^[0-9\.]+(px|%|in|cm|mm|em|ex|pt|pc)$/i.test(size))) {
    return "";
  }

return size;
}

function getStyle(elm, attrib, style) {
  var val = tinyMCEPopup.dom.getAttrib(elm, attrib);

if (val != '') {
    return '' + val;
  }

if (typeof (style) == 'undefined') {
    style = attrib;
  }

return tinyMCEPopup.dom.getStyle(elm, style);
}

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Editing: form_utils.js

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