MediaWiki:Gadget-dictionaryLookupHover.js

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/*** This is the Stable version of the gadget js.***/
 
/*
Stolen from fr wikinews, and than subsequently heavily modified by Bawolff. This script is based on the french one created by [[en:wiktionary:User:Bequw]] and [[en:wiktionary:User:Conrad.Irwin]]. 
 
The current version of this is maintained by Bawolff. please don't hesitate to contact me (bawolff) if you have any issues, comments, bugs, need help, or whatever.
*/
 
/*global wgUserLanguage, wgContentLanguage, window, hookEvent, addOnloadHook, XSLTProcessor*/
/*jslint browser: true, undef: true, nomen: true, eqeqeq: true, bitwise: true, newcap: true, immed: true, maxerr: 80 */
 
/*members TEXT_NODE, addEventListener, appendChild, attachEvent, body, 
    border, charAt, clientWidth, clientX, clientY, cloneContents, 
    cloneRange, collapse, createElement, createRange, data, detach, display, 
    documentElement, en, endContainer, endOffset, event, expand, findWord, 
    firstChild, focus, fr, fra, frc, fre, getElementById, getInnerWidth, 
    getRangeAt, getScrollX, getScrollY, getSelection, height, id, 
    innerWidth, left, length, lookupWord, match, nl, nodeType, ondblclick, 
    open, pageXOffset, pageYOffset, position, preferLang, preventDefault, 
    rangeOffset, rangeParent, rangeToWord, readyState, replace, returnValue, 
    scrollLeft, scrollTop, selection, setEnd, setStart, setup, shiftKey, 
    split, src, startContainer, startOffset, stopPropagation, 
    stripAfterDash, style, substring, text, toString, top, useNewWindow, 
    validLangs, wgUserLanguage, width, wiktDomain, wiktLookup, zIndex
*/
 
//set wiktLookup.useNewWindow to true to force new window.
if (!window.wiktLookup) var wiktLookup = {};
/*
Options:
count
showWord
*/
 
wiktLookup.validLangs = {en: "en", fr: "fr", frc: "fr", fra: "fr", fre: "fr", nl: "nl"};
wiktLookup.wiktDomain = 'en'; //default
wiktLookup.stripAfterDash = /-.*$/;
if (wiktLookup.validLangs[wgUserLanguage]) {
  wiktLookup.wiktDomain = wiktLookup.validLangs[wgUserLanguage];
} else if (wiktLookup.validLangs[wgUserLanguage.replace(wiktLookup.stripAfterDash)]) {
  wiktLookup.wiktDomain = wiktLookup.validLangs[wgUserLanguage.replace(wiktLookup.stripAfterDash)];
} else if (wiktLookup.validLangs[wgContentLanguage]) {
  wiktLookup.wiktDomain = wiktLookup.validLangs[wgContentLanguage];
} else if (wiktLookup.validLangs[wgContentLanguage.replace(wiktLookup.stripAfterDash)]) {
  wiktLookup.wiktDomain = wiktLookup.validLangs[wgContentLanguage.replace(wiktLookup.stripAfterDash)];
}
 
if (!wiktLookup.preferLang) wiktLookup.preferLang = (window.wgUserLanguage ? wgUserLanguage : wiktLookup.wiktDomain );
 
wiktLookup.getOptions = function () {
 var opt = '';
 if (wiktLookup.count)
  opt += '&count=' + wiktLookup.count;
 if (wiktLookup.showWord)
  opt += '&showWord=' + wiktLookup.showWord;
 if (wiktLookup.noRedir)
  opt += '&rd=500';
 
 return opt;
}
 
wiktLookup.rangeToWord = function (selection) {
//includes apostraphes
//fixme: if at begin of container.
  var finalText = selection.toString();
  try {
    var expandWord = /['\-]/ //list of chars that are not actual word boundries.
    var range = selection.getRangeAt(0);
    var rangeBefore = range.cloneRange();
    if (rangeBefore.startOffset !== 0 ) {
      rangeBefore.setStart(rangeBefore.startContainer, rangeBefore.startOffset - 1);
      var textNode = rangeBefore.cloneContents().firstChild;
      if (textNode.nodeType === 3 && expandWord.test(textNode.data.charAt(0))) {
        for (var i = 0; i < 30 /*to stop run-away*/; i++) {
          rangeBefore.setStart(rangeBefore.startContainer, rangeBefore.startOffset - 1);
          textNode = rangeBefore.cloneContents().firstChild;
          if ((textNode.nodeType !== 3) || (textNode.nodeType === 3 && textNode.data.match(/^\s/))) {
            rangeBefore.setStart(rangeBefore.startContainer, rangeBefore.startOffset + 1);
            finalText = rangeBefore.toString();
            rangeBefore.detach();
            range.detach();
            return finalText;
          }
          else if (rangeBefore.startOffset === 0) { //at the end of the range. this might add periods, which are stripped later.
            finalText = rangeBefore.toString();
            rangeBefore.detach();
            range.detach();
            return finalText;
          }
        }
      }
    }
    rangeBefore.detach(); //done with it.
    var rangeAfter = range.cloneRange();
    rangeAfter.setEnd(rangeAfter.endContainer, rangeAfter.endOffset + 1);
    var textNode = rangeAfter.cloneContents().firstChild; //double var...
    if (textNode.nodeType === 3 && expandWord.test(textNode.data.charAt(textNode.data.length - 1))) {
      for (var i = 0; i < 30 /*to stop run-away*/; i++) {
        rangeAfter.setEnd(rangeAfter.endContainer, rangeAfter.endOffset + 1);
        textNode = rangeAfter.cloneContents().firstChild;
        if ((textNode.nodeType !== 3) || (textNode.nodeType === 3 && textNode.data.match(/\s$/))) {
          rangeAfter.setEnd(rangeAfter.endContainer, rangeAfter.endOffset - 1);
          finalText = rangeAfter.toString();
          rangeAfter.detach();
          range.detach();
          return finalText;
        } else if (rangeAfter.endOffset - rangeAfter.endContainer.data.length === 0) { // this assumes this is a text node... this might add periods, which are stripped later.
          finalText = rangeAfter.toString();
          rangeAfter.detach();
          range.detach();
          return finalText;
        }
      }
    }
    rangeAfter.detach(); //no match, and done with this range.
  } catch (e) {
    if (window.range) {range.detach();}
    return finalText;
  }
  return finalText;
}
 
 
wiktLookup.findWord = function (e) {
  if (!e) {e = window.event;}
  if (e.shiftKey) {
    return true; //don't do anything if shift is pressed down. for compat with other things.
  }
  // stolen from http://www.codetoad.com/javascript_get_selected_text.asp
  var text;
  if (window.getSelection) {
    text = wiktLookup.rangeToWord(window.getSelection());
  }
  else if (document.getSelection) {
    text = wiktLookup.rangeToWord(document.getSelection());
  }
 
  if (text && text.length < 32) {
  //If we have the text. we be done.
    return wiktLookup.lookupWord(text, e.clientX, e.clientY);
  }
 
  // seems to work somewhat on moz. Hopefully moz will be picked up above. So this shouldn't be neccesary.
  if (e.rangeParent && e.rangeParent.nodeType === document.TEXT_NODE) {
    //mozilla part
    var rangeOffset = e.rangeOffset;
    var my_rangestr = e.rangeParent.data; //the event is dynamic!
 
    // which word the rangeOffset is in
    var wordlist1 = my_rangestr.substring(0, rangeOffset).split(/\s+/);
    var wordlist2 = my_rangestr.substring(rangeOffset, my_rangestr.length).split(/\s+/);
 
    if (my_rangestr.length > 0) {
      wiktLookup.lookupWord(wordlist1[wordlist1.length - 1]+wordlist2[0], e.clientX, e.clientY);
    }
    e.preventDefault(); 
    e.stopPropagation();
  }
  //IE specific stuff. Try this as a last resort.
  else {
    try {
      if (document.readyState !== "complete") return false;
      //IE
      var my_range = document.selection.createRange();
      my_range.collapse();
      my_range.expand("word");
 
      wiktLookup.lookupWord(my_range.text);
 
      e.returnValue = false;
      return false;
    } catch (err) { /*ignore*/
    }
  }
}
 
wiktLookup.getScrollX = function () {
  //standard
  if (window.pageXOffset !== undefined) { return window.pageXOffset; }
  //IE 6 in standards mode
  if (document.documentElement && document.documentElement.scrollLeft !== undefined) { return document.documentElement.scrollLeft; }
  //other IE
  if (document.body && document.body.scrollLeft !== undefined) { return document.body.scrollLeft; }
  return 0; //default
}
wiktLookup.getScrollY  = function() {
  //standard
  if (window.pageYOffset !== undefined) { return window.pageYOffset; }
  //IE 6 in standards mode
  if (document.documentElement && document.documentElement.scrollTop !== undefined) { return document.documentElement.scrollTop; }
  //other IE
  if (document.body && document.body.scrollTop !== undefined) { return document.body.scrollTop; }
  return 0;
}
wiktLookup.getInnerWidth = function() {
  //standard
  if (window.innerWidth !== undefined) { return window.innerWidth; }
  //IE 6 in standards mode
  if (document.documentElement && document.documentElement.clientWidth !== undefined) { return document.documentElement.clientWidth; }
  //other IE
  if (document.body && document.body.clientWidth !== undefined) { return document.body.clientWidth; }
  return 0;
} 
wiktLookup.lookupWord = function(word, x, y) {
  if (!word.match(/(?:^[àâçéèêëîïôûùüÿÀÂÇÉÈÊËÎÏÔÛÙÜŸ]|[àâçéèêëîïôûùüÿÀÂÇÉÈÊËÎÏÔÛÙÜŸ]$)/)) {
    //this regex doesn't work if word starts or ends with accents.
    //is this regex even needed?
    var word2 = word.match(/\b(?:[\S]|(?!\.\s)\.)*\b/); //strip quotation marks
  }
  var s = word2 ? word2[0] : word //if regex failed, fall back to word
  if (!s) {return false;} // test if null or empty.
    s = encodeURIComponent(s);
 
    if (!window.XSLTProcessor || wiktLookup.useNewWindow) {
      //This includes IE, which doesn't recognize the mime type mediawiki uses.
      // in future this could put the window where user clicked.
      var newwin = window.open('http://' + wiktLookup.wiktDomain + '.wiktionary.org/wiki/' + s + '?uselang=' + wiktLookup.preferLang,'temp','height=450,width=800,location,menubar,toolbar,status,resizable,scrollbars');
      if (newwin) {
        newwin.focus();
      }
      return true;
    }
 
    var frame = document.getElementById('dict-popup-frame');
    frame.style.display = 'block';
    frame.src = 'http://' + wiktLookup.wiktDomain + '.wiktionary.org/w/api.php?action=parse&redirects&prop=text&format=xml&xslt=MediaWiki:extractFirst.xsl&page=' + s + '&lang=' + wiktLookup.preferLang + wiktLookup.getOptions();
    var left = x + wiktLookup.getScrollX();
    if (left + 420 > wiktLookup.getInnerWidth() && left - 420 > 0) {
      left -= 420;
    }
 
    frame.style.top = (y + wiktLookup.getScrollY() + 10) +'px';
    frame.style.left= left +'px';
}
 
wiktLookup.setup = function () {
  if (document.addEventListener) {
    document.addEventListener("dblclick", wiktLookup.findWord, true); //capture
  } else if (document.attachEvent) {
    document.attachEvent("ondblclick", wiktLookup.findWord);
  }
  else {
    document.ondblclick = wiktLookup.findWord;
  }
}
 
addOnloadHook(wiktLookup.setup);
 
addOnloadHook(function () {
  var frame = document.createElement('iframe');
  frame.style.border = 'none';
  frame.style.position = 'absolute';
  frame.style.display = 'none';
  frame.style.zIndex = '102';
  frame.style.width = '420px'; //default 300
  frame.style.height = '180px'; //default 150
  frame.id = 'dict-popup-frame';
  document.body.appendChild(frame);
 
});
 
 
hookEvent('click', function() { 
  try {
    document.getElementById('dict-popup-frame').href = 'about:blank'; //transparent. at least on firefox.
    document.getElementById('dict-popup-frame').style.display = 'none';
  } catch(e) {/*ignore*/ }
});