/*

 * AJAX applets

 */

function ajaxGet(uri, f) {

  if (window.XMLHttpRequest) {

    ajax = new XMLHttpRequest();

  } else {

    if (window.ActiveXObject) {           

      ajax = new ActiveXObject("Microsoft.XMLHTTP");

    } else {

      alert('Enano client-side runtime error: No AJAX support, unable to continue');

      return;

    }

  }

  ajax.onreadystatechange = f;

  ajax.open('GET', uri, true);

  ajax.setRequestHeader( "If-Modified-Since", "Sat, 1 Jan 2000 00:00:00 GMT" );

  ajax.send(null);

}

function ajaxPost(uri, parms, f) {

  if (window.XMLHttpRequest) {

    ajax = new XMLHttpRequest();

  } else {

    if (window.ActiveXObject) {           

      ajax = new ActiveXObject("Microsoft.XMLHTTP");

    } else {

      alert('Enano client-side runtime error: No AJAX support, unable to continue');

      return;

    }

  }

  ajax.onreadystatechange = f;

  ajax.open('POST', uri, true);

  ajax.setRequestHeader("Content-type", "application/x-www-form-urlencoded");

  // Setting Content-length in Safari triggers a warning

  if ( !is_Safari )

  {

    ajax.setRequestHeader("Content-length", parms.length);

  }

  ajax.setRequestHeader("Connection", "close");

  ajax.send(parms);

}

function ajaxEscape(text)

{

  text = escape(text);

  text = text.replace(/\+/g, '%2B', text);

  return text;

}

// Page editor

function ajaxEditor()

{

  // IE <6 pseudo-compatibility

  if ( KILL_SWITCH )

    return true;

  setAjaxLoading();

  ajaxGet(stdAjaxPrefix+'&_mode=getsource', function() {

      if(ajax.readyState == 4) {

        unsetAjaxLoading();

        if(edit_open) {

          c=confirm('Do you really want to revert your changes?');

          if(!c) return;

        }

        edit_open = true;

        selectButtonMajor('article');

        selectButtonMinor('edit');

        if(in_array('ajaxEditArea', grippied_textareas))

        {

          // Allow the textarea grippifier to re-create the resizer control on the textarea

          grippied_textareas.pop(in_array('ajaxEditArea', grippied_textareas));

        }

        disableUnload('If you do, any changes that you have made to this page will be lost.');

        var switcher = ( readCookie('enano_editor_mode') == 'tinymce' ) ?

                        '<a href="#" onclick="setEditorText(); return false;">wikitext editor</a>  |  graphical editor' :

                        'wikitext editor  |  <a href="#" onclick="setEditorMCE(); return false;">graphical editor</a>' ;

        document.getElementById('ajaxEditContainer').innerHTML = '\

        <div id="mdgPreviewContainer"></div> \

        <span id="switcher">' + switcher + '</span><br />\

        <form name="mdgAjaxEditor" method="get" action="#" onsubmit="ajaxSavePage(); return false;">\

        <textarea id="ajaxEditArea" rows="20" cols="60" style="display: block; margin: 1em 0 1em 1em; width: 96.5%;">'+ajax.responseText+'</textarea><br />\

          Edit summary: <input id="ajaxEditSummary" size="40" /><br />\

          <input id="ajaxEditMinor" name="minor" type="checkbox" /> <label for="ajaxEditMinor">This is a minor edit</label><br />\

          <a href="#" onclick="void(ajaxSavePage()); return false;">save changes</a>  |  <a href="#" onclick="void(ajaxShowPreview()); return false;">preview changes</a>  |  <a href="#" onclick="void(ajaxEditor()); return false;">revert changes</a>  |  <a href="#" onclick="void(ajaxDiscard()); return false;">discard changes</a>\

          <br />\

          '+editNotice+'\

        </form>';

        // initTextareas();

        if(readCookie('enano_editor_mode') == 'tinymce')

        {

          $('ajaxEditArea').switchToMCE();

        }

      }

  });

}

function setEditorMCE()

{

  $('ajaxEditArea').switchToMCE();

  createCookie('enano_editor_mode', 'tinymce', 365);

  $('switcher').object.innerHTML = '<a href="#" onclick="setEditorText(); return false;">wikitext editor</a>  |  graphical editor';

}

function setEditorText()

{

  $('ajaxEditArea').destroyMCE();

  createCookie('enano_editor_mode', 'text', 365);

  $('switcher').object.innerHTML = 'wikitext editor  |  <a href="#" onclick="setEditorMCE(); return false;">graphical editor</a>';

}

function ajaxViewSource()

{

  // IE <6 pseudo-compatibility

  if ( KILL_SWITCH )

    return true;

  setAjaxLoading();

  ajaxGet(stdAjaxPrefix+'&_mode=getsource', function() {

      if(ajax.readyState == 4) {

        unsetAjaxLoading();

        if(edit_open) {

          c=confirm('Do you really want to revert your changes?');

          if(!c) return;

        }

        edit_open = true;

        selectButtonMajor('article');

        selectButtonMinor('edit');

        if(in_array('ajaxEditArea', grippied_textareas))

        {

          // Allow the textarea grippifier to re-create the resizer control on the textarea

          grippied_textareas.pop(in_array('ajaxEditArea', grippied_textareas));

        }

        document.getElementById('ajaxEditContainer').innerHTML = '\

          <form method="get" action="#" onsubmit="ajaxSavePage(); return false;">\

            <textarea readonly="readonly" id="ajaxEditArea" rows="20" cols="60" style="display: block; margin: 1em 0 1em 1em; width: 96.5%;">'+ajax.responseText+'</textarea><br />\

            <a href="#" onclick="void(ajaxReset()); return false;">close viewer</a>\

          </form>';

        initTextareas();

      }

  });

}

function ajaxShowPreview()

{

  // IE <6 pseudo-compatibility

  if ( KILL_SWITCH )

    return true;

  goBusy('Loading preview...');

  var text = ajaxEscape($('ajaxEditArea').getContent());

  if(document.mdgAjaxEditor.minor.checked) minor='&minor';

  else minor='';

  ajaxPost(stdAjaxPrefix+'&_mode=preview', 'summary='+document.getElementById('ajaxEditSummary').value+minor+'&text='+text, function() {

    if(ajax.readyState == 4) {

      unBusy();

      edit_open = false;

      document.getElementById('mdgPreviewContainer').innerHTML = ajax.responseText;

    }

  });

}

function ajaxSavePage()

{

  // IE <6 pseudo-compatibility

  if ( KILL_SWITCH )

    return true;

  //goBusy('Saving page...');

  var text = ajaxEscape($('ajaxEditArea').getContent());

  if(document.mdgAjaxEditor.minor.checked) minor='&minor';

  else minor='';

  ajaxPost(stdAjaxPrefix+'&_mode=savepage', 'summary='+document.getElementById('ajaxEditSummary').value+minor+'&text='+text, function() {

    if(ajax.readyState == 4) {

      unBusy();

      edit_open = false;

      document.getElementById('ajaxEditContainer').innerHTML = ajax.responseText;

      enableUnload();

      unselectAllButtonsMinor();

    }

  });

}

function ajaxDiscard()

{

  // IE <6 pseudo-compatibility

  if ( KILL_SWITCH )

    return true;

  c = confirm('Do you really want to discard your changes?');

  if(!c) return;

  ajaxReset();

}

function ajaxReset()

{

  // IE <6 pseudo-compatibility

  if ( KILL_SWITCH )

    return true;

  enableUnload();

  setAjaxLoading();

  ajaxGet(stdAjaxPrefix+'&_mode=getpage&noheaders', function() {

    if(ajax.readyState == 4) {

      unsetAjaxLoading();

      edit_open = false;

      document.getElementById('ajaxEditContainer').innerHTML = ajax.responseText;

      selectButtonMajor('article');

      unselectAllButtonsMinor();

    }

  });

}

// Miscellaneous AJAX applets

function ajaxProtect(l) {

  // IE <6 pseudo-compatibility

  if ( KILL_SWITCH )

    return true;

  if(shift) {

    r = 'NO_REASON';

  } else {

    r = prompt('Reason for (un)protecting:');

    if(!r || r=='') return;

  }

  setAjaxLoading();

  document.getElementById('protbtn_0').style.textDecoration = 'none';

  document.getElementById('protbtn_1').style.textDecoration = 'none';

  document.getElementById('protbtn_2').style.textDecoration = 'none';

  document.getElementById('protbtn_'+l).style.textDecoration = 'underline';

  ajaxPost(stdAjaxPrefix+'&_mode=protect', 'reason='+escape(r)+'&level='+l, function() {

    if(ajax.readyState == 4) {

      unsetAjaxLoading();

      if(ajax.responseText != 'good')

        alert(ajax.responseText);

    }

  });

}

function ajaxRename()

{

  // IE <6 pseudo-compatibility

  if ( KILL_SWITCH )

    return true;

  r = prompt('What title should this page be renamed to?\nNote: This does not and will never change the URL of this page, that must be done from the admin panel.');

  if(!r || r=='') return;

  setAjaxLoading();

  ajaxPost(stdAjaxPrefix+'&_mode=rename', 'newtitle='+escape(r), function() {

    if(ajax.readyState == 4) {

      unsetAjaxLoading();

      alert(ajax.responseText);

    }

  });

}

function ajaxMakePage()

{

  // IE <6 pseudo-compatibility

  if ( KILL_SWITCH )

    return true;

  setAjaxLoading();

  ajaxPost(ENANO_SPECIAL_CREATEPAGE, ENANO_CREATEPAGE_PARAMS, function() {

    if(ajax.readyState == 4) {

      unsetAjaxLoading();

      window.location.reload();

    }

  });

}

function ajaxDeletePage()

{

  // IE <6 pseudo-compatibility

  if ( KILL_SWITCH )

    return true;

  var reason = prompt('Please enter your reason for deleting this page.');

  if ( !reason || reason == '' )

  {

    return false;

  }

  c = confirm('You are about to REVERSIBLY delete this page. Do you REALLY want to do this?\n\n(Comments and categorization data, as well as any attached files, will be permanently lost)');

  if(!c)

  {

    return;

  }

  setAjaxLoading();

  ajaxPost(stdAjaxPrefix+'&_mode=deletepage', 'reason=' + escape(reason), function() {

    if(ajax.readyState == 4) {

      unsetAjaxLoading();

      alert(ajax.responseText);

      window.location.reload();                                                                           

    }

  });

}

function ajaxDelVote()

{

  // IE <6 pseudo-compatibility

  if ( KILL_SWITCH )

    return true;

  c = confirm('Are you sure that you want to vote that this page be deleted?');

  if(!c) return;

  setAjaxLoading();

  ajaxGet(stdAjaxPrefix+'&_mode=delvote', function() {

    if(ajax.readyState == 4) {

      unsetAjaxLoading();

      alert(ajax.responseText);

    }

  });

}

function ajaxResetDelVotes()

{

  // IE <6 pseudo-compatibility

  if ( KILL_SWITCH )

    return true;

  c = confirm('This will reset the number of votes against this page to zero. Do you really want to do this?');

  if(!c) return;

  setAjaxLoading();

  ajaxGet(stdAjaxPrefix+'&_mode=resetdelvotes', function() {

    if(ajax.readyState == 4) {

      unsetAjaxLoading();

      alert(ajax.responseText);

      item = document.getElementById('mdgDeleteVoteNoticeBox');

      if(item)

      {

        opacity('mdgDeleteVoteNoticeBox', 100, 0, 1000);

        setTimeout("document.getElementById('mdgDeleteVoteNoticeBox').style.display = 'none';", 1000);

      }

    }

  });

}

function ajaxSetWikiMode(val) {

  // IE <6 pseudo-compatibility

  if ( KILL_SWITCH )

    return true;

  setAjaxLoading();

  document.getElementById('wikibtn_0').style.textDecoration = 'none';

  document.getElementById('wikibtn_1').style.textDecoration = 'none';

  document.getElementById('wikibtn_2').style.textDecoration = 'none';

  document.getElementById('wikibtn_'+val).style.textDecoration = 'underline';

  ajaxGet(stdAjaxPrefix+'&_mode=setwikimode&mode='+val, function() {

    if(ajax.readyState == 4) {

      unsetAjaxLoading();

      if(ajax.responseText!='GOOD')

      {

        alert(ajax.responseText);

      }

    }

  });

}

// Editing/saving category information

// This was not easy to write, I hope enjoy it, and dang I swear I'm gonna

// find someone to work on just the Javascript part of Enano...

function ajaxCatEdit()

{

  // IE <6 pseudo-compatibility

  if ( KILL_SWITCH )

    return true;

  setAjaxLoading();

  ajaxGet(stdAjaxPrefix+'&_mode=catedit', function() {

    if(ajax.readyState == 4) {

      unsetAjaxLoading();

      edit_open = false;

      eval(ajax.responseText);

    }

  });

}

function ajaxCatSave()

{

  // IE <6 pseudo-compatibility

  if ( KILL_SWITCH )

    return true;

  if(!catlist)

  {

    alert('Var catlist has no properties');

    return;

  }

  query='';

  for(i=0;i<catlist.length;i++)

  {

    l = 'if(document.forms.mdgCatForm.mdgCat_'+catlist[i]+'.checked) s = true; else s = false;';

    eval(l);

    if(s) query = query + '&' + catlist[i] + '=true';

  }

  setAjaxLoading();

  query = query.substring(1, query.length);

  ajaxPost(stdAjaxPrefix+'&_mode=catsave', query, function() {

    if(ajax.readyState == 4) {

      unsetAjaxLoading();

      edit_open = false;

      if(ajax.responseText != 'GOOD') alert(ajax.responseText);

      ajaxReset();

    }

  });

}

// History stuff

function ajaxHistory()

{

  // IE <6 pseudo-compatibility

  if ( KILL_SWITCH )

    return true;

  setAjaxLoading();

  ajaxGet(stdAjaxPrefix+'&_mode=histlist', function() {

    if(ajax.readyState == 4) {

      unsetAjaxLoading();

      edit_open = false;

      selectButtonMajor('article');

      selectButtonMinor('history');

      document.getElementById('ajaxEditContainer').innerHTML = ajax.responseText;

      buildDiffList();

    }

  });

}

function ajaxHistView(oldid, tit) {

  // IE <6 pseudo-compatibility

  if ( KILL_SWITCH )

    return true;

  if(!tit) tit=title;

  setAjaxLoading();

  ajaxGet(append_sid(scriptPath+'/ajax.php?title='+tit+'&_mode=getpage&oldid='+oldid), function() {

    if(ajax.readyState == 4) {

      unsetAjaxLoading();

      edit_open = false;

      document.getElementById('ajaxEditContainer').innerHTML = ajax.responseText;

    }

  });

}

function ajaxRollback(id) {

  // IE <6 pseudo-compatibility

  if ( KILL_SWITCH )

    return true;

  setAjaxLoading();

  ajaxGet(stdAjaxPrefix+'&_mode=rollback&id='+id, function() {

    if(ajax.readyState == 4) {

      unsetAjaxLoading();

      alert(ajax.responseText);

    }

  });

}

function ajaxClearLogs()

{

  // IE <6 pseudo-compatibility

  if ( KILL_SWITCH )

    return true;

  c = confirm('You are about to DESTROY all log entries for this page. As opposed to (example) deleting this page, this action is completely IRREVERSIBLE and should not be used except in dire circumstances. Do you REALLY want to do this?');

  if(!c) return;

  c = confirm('You\'re ABSOLUTELY sure???');

  if(!c) return;

  setAjaxLoading();

  ajaxGet(stdAjaxPrefix+'&_mode=flushlogs', function() {

    if(ajax.readyState == 4) {

      unsetAjaxLoading();

      alert(ajax.responseText);

      window.location.reload();

    }

  });

}

var timelist;

function buildDiffList()

{

  arrDiff1Buttons = getElementsByClassName(document, 'input', 'clsDiff1Radio');

  arrDiff2Buttons = getElementsByClassName(document, 'input', 'clsDiff2Radio');

  var len = arrDiff1Buttons.length;

  if ( len < 1 )

    return false;

  timelist = new Array();

  for ( var i = 0; i < len; i++ )

  {

    timelist.push( arrDiff2Buttons[i].id.substr(6) );

  }

  timelist.push( arrDiff1Buttons[len-1].id.substr(6) );

  delete(timelist.toJSONString);

  for ( var i = 1; i < timelist.length-1; i++ )

  {

    if ( i >= timelist.length ) break;

    arrDiff2Buttons[i].style.display = 'none';

  }

}

function selectDiff1Button(obj)

{

  var this_time = obj.id.substr(6);

  var index = parseInt(in_array(this_time, timelist));

  for ( var i = 0; i < timelist.length - 1; i++ )

  {

    if ( i < timelist.length - 1 )

    {

      var state = ( i < index ) ? 'inline' : 'none';

      var id = 'diff2_' + timelist[i];

      document.getElementById(id).style.display = state;

      // alert("Debug:\nIndex: "+index+"\nState: "+state+"\ni: "+i);

    }

  }

}

function selectDiff2Button(obj)

{

  var this_time = obj.id.substr(6);

  var index = parseInt(in_array(this_time, timelist));

  for ( var i = 1; i < timelist.length; i++ )

  {

    if ( i < timelist.length - 1 )

    {

      var state = ( i > index ) ? 'inline' : 'none';

      var id = 'diff1_' + timelist[i];

      document.getElementById(id).style.display = state;

      // alert("Debug:\nIndex: "+index+"\nState: "+state+"\ni: "+i);

    }

  }