/**
 * Plugin.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
 */

/**
 * This class contains all core logic for the charmap plugin.
 *
 * @class tinymce.charmap.Plugin
 * @private
 */
define(
  'tinymce.plugins.charmap.Plugin',
  [
    'tinymce.core.PluginManager',
    'tinymce.core.util.Tools'
  ],
  function (PluginManager, Tools) {
    PluginManager.add('charmap', function (editor) {
      var isArray = Tools.isArray;

      function getDefaultCharMap() {
        return [
          ['160', 'no-break space'],
          ['173', 'soft hyphen'],
          ['34', 'quotation mark'],
          // finance
          ['162', 'cent sign'],
          ['8364', 'euro sign'],
          ['163', 'pound sign'],
          ['165', 'yen sign'],
          // signs
          ['169', 'copyright sign'],
          ['174', 'registered sign'],
          ['8482', 'trade mark sign'],
          ['8240', 'per mille sign'],
          ['181', 'micro sign'],
          ['183', 'middle dot'],
          ['8226', 'bullet'],
          ['8230', 'three dot leader'],
          ['8242', 'minutes / feet'],
          ['8243', 'seconds / inches'],
          ['167', 'section sign'],
          ['182', 'paragraph sign'],
          ['223', 'sharp s / ess-zed'],
          // quotations
          ['8249', 'single left-pointing angle quotation mark'],
          ['8250', 'single right-pointing angle quotation mark'],
          ['171', 'left pointing guillemet'],
          ['187', 'right pointing guillemet'],
          ['8216', 'left single quotation mark'],
          ['8217', 'right single quotation mark'],
          ['8220', 'left double quotation mark'],
          ['8221', 'right double quotation mark'],
          ['8218', 'single low-9 quotation mark'],
          ['8222', 'double low-9 quotation mark'],
          ['60', 'less-than sign'],
          ['62', 'greater-than sign'],
          ['8804', 'less-than or equal to'],
          ['8805', 'greater-than or equal to'],
          ['8211', 'en dash'],
          ['8212', 'em dash'],
          ['175', 'macron'],
          ['8254', 'overline'],
          ['164', 'currency sign'],
          ['166', 'broken bar'],
          ['168', 'diaeresis'],
          ['161', 'inverted exclamation mark'],
          ['191', 'turned question mark'],
          ['710', 'circumflex accent'],
          ['732', 'small tilde'],
          ['176', 'degree sign'],
          ['8722', 'minus sign'],
          ['177', 'plus-minus sign'],
          ['247', 'division sign'],
          ['8260', 'fraction slash'],
          ['215', 'multiplication sign'],
          ['185', 'superscript one'],
          ['178', 'superscript two'],
          ['179', 'superscript three'],
          ['188', 'fraction one quarter'],
          ['189', 'fraction one half'],
          ['190', 'fraction three quarters'],
          // math / logical
          ['402', 'function / florin'],
          ['8747', 'integral'],
          ['8721', 'n-ary sumation'],
          ['8734', 'infinity'],
          ['8730', 'square root'],
          ['8764', 'similar to'],
          ['8773', 'approximately equal to'],
          ['8776', 'almost equal to'],
          ['8800', 'not equal to'],
          ['8801', 'identical to'],
          ['8712', 'element of'],
          ['8713', 'not an element of'],
          ['8715', 'contains as member'],
          ['8719', 'n-ary product'],
          ['8743', 'logical and'],
          ['8744', 'logical or'],
          ['172', 'not sign'],
          ['8745', 'intersection'],
          ['8746', 'union'],
          ['8706', 'partial differential'],
          ['8704', 'for all'],
          ['8707', 'there exists'],
          ['8709', 'diameter'],
          ['8711', 'backward difference'],
          ['8727', 'asterisk operator'],
          ['8733', 'proportional to'],
          ['8736', 'angle'],
          // undefined
          ['180', 'acute accent'],
          ['184', 'cedilla'],
          ['170', 'feminine ordinal indicator'],
          ['186', 'masculine ordinal indicator'],
          ['8224', 'dagger'],
          ['8225', 'double dagger'],
          // alphabetical special chars
          ['192', 'A - grave'],
          ['193', 'A - acute'],
          ['194', 'A - circumflex'],
          ['195', 'A - tilde'],
          ['196', 'A - diaeresis'],
          ['197', 'A - ring above'],
          ['256', 'A - macron'],
          ['198', 'ligature AE'],
          ['199', 'C - cedilla'],
          ['200', 'E - grave'],
          ['201', 'E - acute'],
          ['202', 'E - circumflex'],
          ['203', 'E - diaeresis'],
          ['274', 'E - macron'],
          ['204', 'I - grave'],
          ['205', 'I - acute'],
          ['206', 'I - circumflex'],
          ['207', 'I - diaeresis'],
          ['298', 'I - macron'],
          ['208', 'ETH'],
          ['209', 'N - tilde'],
          ['210', 'O - grave'],
          ['211', 'O - acute'],
          ['212', 'O - circumflex'],
          ['213', 'O - tilde'],
          ['214', 'O - diaeresis'],
          ['216', 'O - slash'],
          ['332', 'O - macron'],
          ['338', 'ligature OE'],
          ['352', 'S - caron'],
          ['217', 'U - grave'],
          ['218', 'U - acute'],
          ['219', 'U - circumflex'],
          ['220', 'U - diaeresis'],
          ['362', 'U - macron'],
          ['221', 'Y - acute'],
          ['376', 'Y - diaeresis'],
          ['562', 'Y - macron'],
          ['222', 'THORN'],
          ['224', 'a - grave'],
          ['225', 'a - acute'],
          ['226', 'a - circumflex'],
          ['227', 'a - tilde'],
          ['228', 'a - diaeresis'],
          ['229', 'a - ring above'],
          ['257', 'a - macron'],
          ['230', 'ligature ae'],
          ['231', 'c - cedilla'],
          ['232', 'e - grave'],
          ['233', 'e - acute'],
          ['234', 'e - circumflex'],
          ['235', 'e - diaeresis'],
          ['275', 'e - macron'],
          ['236', 'i - grave'],
          ['237', 'i - acute'],
          ['238', 'i - circumflex'],
          ['239', 'i - diaeresis'],
          ['299', 'i - macron'],
          ['240', 'eth'],
          ['241', 'n - tilde'],
          ['242', 'o - grave'],
          ['243', 'o - acute'],
          ['244', 'o - circumflex'],
          ['245', 'o - tilde'],
          ['246', 'o - diaeresis'],
          ['248', 'o slash'],
          ['333', 'o macron'],
          ['339', 'ligature oe'],
          ['353', 's - caron'],
          ['249', 'u - grave'],
          ['250', 'u - acute'],
          ['251', 'u - circumflex'],
          ['252', 'u - diaeresis'],
          ['363', 'u - macron'],
          ['253', 'y - acute'],
          ['254', 'thorn'],
          ['255', 'y - diaeresis'],
          ['563', 'y - macron'],
          ['913', 'Alpha'],
          ['914', 'Beta'],
          ['915', 'Gamma'],
          ['916', 'Delta'],
          ['917', 'Epsilon'],
          ['918', 'Zeta'],
          ['919', 'Eta'],
          ['920', 'Theta'],
          ['921', 'Iota'],
          ['922', 'Kappa'],
          ['923', 'Lambda'],
          ['924', 'Mu'],
          ['925', 'Nu'],
          ['926', 'Xi'],
          ['927', 'Omicron'],
          ['928', 'Pi'],
          ['929', 'Rho'],
          ['931', 'Sigma'],
          ['932', 'Tau'],
          ['933', 'Upsilon'],
          ['934', 'Phi'],
          ['935', 'Chi'],
          ['936', 'Psi'],
          ['937', 'Omega'],
          ['945', 'alpha'],
          ['946', 'beta'],
          ['947', 'gamma'],
          ['948', 'delta'],
          ['949', 'epsilon'],
          ['950', 'zeta'],
          ['951', 'eta'],
          ['952', 'theta'],
          ['953', 'iota'],
          ['954', 'kappa'],
          ['955', 'lambda'],
          ['956', 'mu'],
          ['957', 'nu'],
          ['958', 'xi'],
          ['959', 'omicron'],
          ['960', 'pi'],
          ['961', 'rho'],
          ['962', 'final sigma'],
          ['963', 'sigma'],
          ['964', 'tau'],
          ['965', 'upsilon'],
          ['966', 'phi'],
          ['967', 'chi'],
          ['968', 'psi'],
          ['969', 'omega'],
          // symbols
          ['8501', 'alef symbol'],
          ['982', 'pi symbol'],
          ['8476', 'real part symbol'],
          ['978', 'upsilon - hook symbol'],
          ['8472', 'Weierstrass p'],
          ['8465', 'imaginary part'],
          // arrows
          ['8592', 'leftwards arrow'],
          ['8593', 'upwards arrow'],
          ['8594', 'rightwards arrow'],
          ['8595', 'downwards arrow'],
          ['8596', 'left right arrow'],
          ['8629', 'carriage return'],
          ['8656', 'leftwards double arrow'],
          ['8657', 'upwards double arrow'],
          ['8658', 'rightwards double arrow'],
          ['8659', 'downwards double arrow'],
          ['8660', 'left right double arrow'],
          ['8756', 'therefore'],
          ['8834', 'subset of'],
          ['8835', 'superset of'],
          ['8836', 'not a subset of'],
          ['8838', 'subset of or equal to'],
          ['8839', 'superset of or equal to'],
          ['8853', 'circled plus'],
          ['8855', 'circled times'],
          ['8869', 'perpendicular'],
          ['8901', 'dot operator'],
          ['8968', 'left ceiling'],
          ['8969', 'right ceiling'],
          ['8970', 'left floor'],
          ['8971', 'right floor'],
          ['9001', 'left-pointing angle bracket'],
          ['9002', 'right-pointing angle bracket'],
          ['9674', 'lozenge'],
          ['9824', 'black spade suit'],
          ['9827', 'black club suit'],
          ['9829', 'black heart suit'],
          ['9830', 'black diamond suit'],
          ['8194', 'en space'],
          ['8195', 'em space'],
          ['8201', 'thin space'],
          ['8204', 'zero width non-joiner'],
          ['8205', 'zero width joiner'],
          ['8206', 'left-to-right mark'],
          ['8207', 'right-to-left mark']
        ];
      }

      function charmapFilter(charmap) {
        return Tools.grep(charmap, function (item) {
          return isArray(item) && item.length == 2;
        });
      }

      function getCharsFromSetting(settingValue) {
        if (isArray(settingValue)) {
          return [].concat(charmapFilter(settingValue));
        }

        if (typeof settingValue == "function") {
          return settingValue();
        }

        return [];
      }

      function extendCharMap(charmap) {
        var settings = editor.settings;

        if (settings.charmap) {
          charmap = getCharsFromSetting(settings.charmap);
        }

        if (settings.charmap_append) {
          return [].concat(charmap).concat(getCharsFromSetting(settings.charmap_append));
        }

        return charmap;
      }

      function getCharMap() {
        return extendCharMap(getDefaultCharMap());
      }

      function insertChar(chr) {
        editor.fire('insertCustomChar', { chr: chr }).chr;
        editor.execCommand('mceInsertContent', false, chr);
      }

      function showDialog() {
        var gridHtml, x, y, win;

        function getParentTd(elm) {
          while (elm) {
            if (elm.nodeName == 'TD') {
              return elm;
            }

            elm = elm.parentNode;
          }
        }

        gridHtml = '<table role="presentation" cellspacing="0" class="mce-charmap"><tbody>';

        var charmap = getCharMap();
        var width = Math.min(charmap.length, 25);
        var height = Math.ceil(charmap.length / width);
        for (y = 0; y < height; y++) {
          gridHtml += '<tr>';

          for (x = 0; x < width; x++) {
            var index = y * width + x;
            if (index < charmap.length) {
              var chr = charmap[index];
              var chrText = chr ? String.fromCharCode(parseInt(chr[0], 10)) : '&nbsp;';

              gridHtml += (
                '<td title="' + chr[1] + '">' +
                '<div tabindex="-1" title="' + chr[1] + '" role="button" data-chr="' + chrText + '">' +
                chrText +
                '</div>' +
                '</td>'
              );
            } else {
              gridHtml += '<td />';
            }
          }

          gridHtml += '</tr>';
        }

        gridHtml += '</tbody></table>';

        var charMapPanel = {
          type: 'container',
          html: gridHtml,
          onclick: function (e) {
            var target = e.target;

            if (/^(TD|DIV)$/.test(target.nodeName)) {
              var charDiv = getParentTd(target).firstChild;
              if (charDiv && charDiv.hasAttribute('data-chr')) {
                insertChar(charDiv.getAttribute('data-chr'));

                if (!e.ctrlKey) {
                  win.close();
                }
              }
            }
          },
          onmouseover: function (e) {
            var td = getParentTd(e.target);

            if (td && td.firstChild) {
              win.find('#preview').text(td.firstChild.firstChild.data);
              win.find('#previewTitle').text(td.title);
            } else {
              win.find('#preview').text(' ');
              win.find('#previewTitle').text(' ');
            }
          }
        };

        win = editor.windowManager.open({
          title: "Special character",
          spacing: 10,
          padding: 10,
          items: [
            charMapPanel,
            {
              type: 'container',
              layout: 'flex',
              direction: 'column',
              align: 'center',
              spacing: 5,
              minWidth: 160,
              minHeight: 160,
              items: [
                {
                  type: 'label',
                  name: 'preview',
                  text: ' ',
                  style: 'font-size: 40px; text-align: center',
                  border: 1,
                  minWidth: 140,
                  minHeight: 80
                },
                {
                  type: 'spacer',
                  minHeight: 20
                },
                {
                  type: 'label',
                  name: 'previewTitle',
                  text: ' ',
                  style: 'white-space: pre-wrap;',
                  border: 1,
                  minWidth: 140
                }
              ]
            }
          ],
          buttons: [
            {
              text: "Close", onclick: function () {
                win.close();
              }
            }
          ]
        });
      }

      editor.addCommand('mceShowCharmap', showDialog);

      editor.addButton('charmap', {
        icon: 'charmap',
        tooltip: 'Special character',
        cmd: 'mceShowCharmap'
      });

      editor.addMenuItem('charmap', {
        icon: 'charmap',
        text: 'Special character',
        cmd: 'mceShowCharmap',
        context: 'insert'
      });

      return {
        getCharMap: getCharMap,
        insertChar: insertChar
      };
    });

    return function () { };
  }
);