// Toolbar JavaScript support functions from mediawiki 
// $Id: toolbar.js,v 1.3 2004-06-01 15:23:10 rurban Exp $ 

// Un-trap us from framesets
if( window.top != window ) window.top.location = window.location;

// This function generates the actual toolbar buttons with localized text
// We use it to avoid creating the toolbar where javascript is not enabled
// Not all buttons use this helper, some need special javascript treatment.
function addButton(imageFile, speedTip, tagOpen, tagClose, sampleText) {
  speedTip=escapeQuotes(speedTip);
  tagOpen=escapeQuotes(tagOpen);
  tagClose=escapeQuotes(tagClose);
  sampleText=escapeQuotes(sampleText);
  document.write("<a href=\"javascript:insertTags");
  document.write("('"+tagOpen+"','"+tagClose+"','"+sampleText+"');\">");
  //width=\"23\" height=\"22\"
  document.write("<img src=\""+imageFile+"\" width=\"18\" height=\"18\" border=\"0\" alt=\""+speedTip+"\" title=\""+speedTip+"\" style=\"border: 1px solid ButtonFace;\">");
  document.write("</a>");
  return;
}

function addInfobox(infoText) {
  // if no support for changing selection, add a small copy & paste field
  var clientPC = navigator.userAgent.toLowerCase(); // Get client info
  var is_nav = ((clientPC.indexOf('gecko')!=-1) && (clientPC.indexOf('spoofer')==-1)
                && (clientPC.indexOf('khtml') == -1));
  if(!document.selection && !is_nav) {
    infoText=escapeQuotesHTML(infoText);
    document.write("<form name='infoform' id='infoform'>"+
		   "<input size=80 id='infobox' name='infobox' value=\""+
		   infoText+"\" readonly=\"readonly\"></form>");
  }
}

function escapeQuotes(text) {
  var re=new RegExp("'","g");
  text=text.replace(re,"\\'");
  re=new RegExp('"',"g");
  text=text.replace(re,'&quot;');
  re=new RegExp("\\n","g");
  text=text.replace(re,"\\n");
  return text;
}

function escapeQuotesHTML(text) {
  var re=new RegExp('"',"g");
  text=text.replace(re,"&quot;");
  return text;
}

// apply tagOpen/tagClose to selection in textarea,
// use sampleText instead of selection if there is none
// copied and adapted from phpBB
function insertTags(tagOpen, tagClose, sampleText) {
  //f=document.getElementById('editpage');
  var txtarea = document.getElementById('edit[content]');
  // var txtarea = document.editpage.edit[content];
  
  // IE
  if(document.selection) {
    var theSelection = document.selection.createRange().text;
    if(!theSelection) { theSelection=sampleText;}
    txtarea.focus();
    if(theSelection.charAt(theSelection.length - 1) == " "){// exclude ending space char, if any
      theSelection = theSelection.substring(0, theSelection.length - 1);
      document.selection.createRange().text = tagOpen + theSelection + tagClose + " ";
    } else {
      document.selection.createRange().text = tagOpen + theSelection + tagClose;
    }
    // Mozilla -- disabled because it induces a scrolling bug which makes it virtually unusable
  } else if(txtarea.selectionStart || txtarea.selectionStart == '0') {
    var startPos = txtarea.selectionStart;
    var endPos = txtarea.selectionEnd;
    var scrollTop=txtarea.scrollTop;
    var myText = (txtarea.value).substring(startPos, endPos);
    if(!myText) { myText=sampleText;}
    if(myText.charAt(myText.length - 1) == " "){ // exclude ending space char, if any
      subst = tagOpen + myText.substring(0, (myText.length - 1)) + tagClose + " "; 
    } else {
      subst = tagOpen + myText + tagClose; 
    }
    txtarea.value = txtarea.value.substring(0, startPos) + subst + txtarea.value.substring(endPos, txtarea.value.length);
    txtarea.focus();
    var cPos=startPos+(tagOpen.length+myText.length+tagClose.length);
    txtarea.selectionStart=cPos;
    txtarea.selectionEnd=cPos;
    txtarea.scrollTop=scrollTop;
    // All others
  } else {
    // Append at the end: Some people find that annoying
    //txtarea.value += tagOpen + sampleText + tagClose;
    //txtarea.focus();
    var re=new RegExp("\\n","g");
    tagOpen=tagOpen.replace(re,"");
    tagClose=tagClose.replace(re,"");
    document.infoform.infobox.value=tagOpen+sampleText+tagClose;
    txtarea.focus();
  }
  // reposition cursor if possible
  if (txtarea.createTextRange) txtarea.caretPos = document.selection.createRange().duplicate();
}