wikibits.js

许多同学在配制OpenCV时都遇到一些问题

// Wikipedia JavaScript support functions
// if this is true, the toolbar will no longer overwrite the infobox when you move the mouse over individual items
var noOverwrite=false;
var alertText;
var clientPC = navigator.userAgent.toLowerCase(); // Get client info
var is_gecko = ((clientPC.indexOf('gecko')!=-1) && (clientPC.indexOf('spoofer')==-1)
                && (clientPC.indexOf('khtml') == -1) && (clientPC.indexOf('netscape/7.0')==-1));
var is_safari = ((clientPC.indexOf('AppleWebKit')!=-1) && (clientPC.indexOf('spoofer')==-1));
var is_khtml = (navigator.vendor == 'KDE' || ( document.childNodes && !document.all && !navigator.taintEnabled ));
if (clientPC.indexOf('opera')!=-1) {
    var is_opera = true;
    var is_opera_preseven = (window.opera && !document.childNodes);
    var is_opera_seven = (window.opera && document.childNodes);
}

// add any onload functions in this hook (please don't hard-code any events in the xhtml source)
function onloadhook () {
    // don't run anything below this for non-dom browsers
    if(!(document.getElementById && document.getElementsByTagName)) return;
    histrowinit();
    unhidetzbutton();
    tabbedprefs();
    akeytt();
}
if (window.addEventListener) window.addEventListener("load",onloadhook,false);
else if (window.attachEvent) window.attachEvent("onload",onloadhook);


// document.write special stylesheet links
if(typeof stylepath != 'undefined' && typeof skin != 'undefined') {
    if (is_opera_preseven) {
        document.write('<link rel="stylesheet" type="text/css" href="'+stylepath+'/'+skin+'/Opera6Fixes.css">');
    } else if (is_opera_seven) {
        document.write('<link rel="stylesheet" type="text/css" href="'+stylepath+'/'+skin+'/Opera7Fixes.css">');
    } else if (is_khtml) {
        document.write('<link rel="stylesheet" type="text/css" href="'+stylepath+'/'+skin+'/KHTMLFixes.css">');
    }
}
// Un-trap us from framesets
if( window.top != window ) window.top.location = window.location;

// for enhanced RecentChanges
function toggleVisibility( _levelId, _otherId, _linkId) {
	var thisLevel = document.getElementById( _levelId );
	var otherLevel = document.getElementById( _otherId );
	var linkLevel = document.getElementById( _linkId );
	if ( thisLevel.style.display == 'none' ) {
		thisLevel.style.display = 'block';
		otherLevel.style.display = 'none';
		linkLevel.style.display = 'inline';
	} else {
		thisLevel.style.display = 'none';
		otherLevel.style.display = 'inline';
		linkLevel.style.display = 'none';
		}
}

// page history stuff
// attach event handlers to the input elements on history page
function histrowinit () {
    hf = document.getElementById('pagehistory');
    if(!hf) return;
    lis = hf.getElementsByTagName('li');
    for (i=0;i<lis.length;i++) {
        inputs=lis[i].getElementsByTagName('input');
        if(inputs[0] && inputs[1]) {
                inputs[0].onclick = diffcheck;
                inputs[1].onclick = diffcheck;
        }
    }
    diffcheck();
}
// check selection and tweak visibility/class onclick
function diffcheck() { 
    var dli = false; // the li where the diff radio is checked
    var oli = false; // the li where the oldid radio is checked
    hf = document.getElementById('pagehistory');
    if(!hf) return;
    lis = hf.getElementsByTagName('li');
    for (i=0;i<lis.length;i++) {
        inputs=lis[i].getElementsByTagName('input');
        if(inputs[1] && inputs[0]) {
            if(inputs[1].checked || inputs[0].checked) { // this row has a checked radio button
                if(inputs[1].checked && inputs[0].checked && inputs[0].value == inputs[1].value) return false;
                if(oli) { // it's the second checked radio
                    if(inputs[1].checked) {
                    oli.className = "selected";
                    return false 
                    }
                } else if (inputs[0].checked) {
                    return false;
                }
                if(inputs[0].checked) dli = lis[i];
                if(!oli) inputs[0].style.visibility = 'hidden';
                if(dli) inputs[1].style.visibility = 'hidden';
                lis[i].className = "selected";
                oli = lis[i];
            }  else { // no radio is checked in this row
                if(!oli) inputs[0].style.visibility = 'hidden';
                else inputs[0].style.visibility = 'visible';
                if(dli) inputs[1].style.visibility = 'hidden';
                else inputs[1].style.visibility = 'visible';
                lis[i].className = "";
            }
        }
    }
}

// generate toc from prefs form, fold sections
// XXX: needs testing on IE/Mac and safari
// more comments to follow
function tabbedprefs() {
    prefform = document.getElementById('preferences');
    if(!prefform || !document.createElement) return;
    if(prefform.nodeName.toLowerCase() == 'a') return; // Occasional IE problem
    prefform.className = prefform.className + 'jsprefs';
    var sections = new Array();
    children = prefform.childNodes;
    var seci = 0;
    for(i=0;i<children.length;i++) {
        if(children[i].nodeName.toLowerCase().indexOf('fieldset') != -1) {
            children[i].id = 'prefsection-' + seci;
            children[i].className = 'prefsection';
            if(is_opera || is_khtml) children[i].className = 'prefsection operaprefsection';
            legends = children[i].getElementsByTagName('legend');
            sections[seci] = new Object();
            if(legends[0] && legends[0].firstChild.nodeValue)
                sections[seci].text = legends[0].firstChild.nodeValue;
            else
                sections[seci].text = '# ' + seci;
            sections[seci].secid = children[i].id;
            seci++;
            if(sections.length != 1) children[i].style.display = 'none';
            else var selectedid = children[i].id;
        }
    }
    var toc = document.createElement('ul');
    toc.id = 'preftoc';
    toc.selectedid = selectedid;
    for(i=0;i<sections.length;i++) {
        var li = document.createElement('li');
        if(i == 0) li.className = 'selected';
        var a =  document.createElement('a');
        a.href = '#' + sections[i].secid;
        a.onclick = uncoversection;
        a.appendChild(document.createTextNode(sections[i].text));
        a.secid = sections[i].secid;
        li.appendChild(a);
        toc.appendChild(li);
    }
    prefform.insertBefore(toc, children[0]);
    document.getElementById('prefsubmit').id = 'prefcontrol';
}
function uncoversection() {
    oldsecid = this.parentNode.parentNode.selectedid;
    newsec = document.getElementById(this.secid);
    if(oldsecid != this.secid) {
        ul = document.getElementById('preftoc');
        document.getElementById(oldsecid).style.display = 'none';
        newsec.style.display = 'block';
        ul.selectedid = this.secid;
        lis = ul.getElementsByTagName('li');
        for(i=0;i< lis.length;i++) {
            lis[i].className = '';
        }
        this.parentNode.className = 'selected';
    }
    return false;
}

// Timezone stuff
// tz in format [+-]HHMM
function checkTimezone( tz, msg ) {
	var localclock = new Date();
	// returns negative offset from GMT in minutes
	var tzRaw = localclock.getTimezoneOffset();
	var tzHour = Math.floor( Math.abs(tzRaw) / 60);
	var tzMin = Math.abs(tzRaw) % 60;
	var tzString = ((tzRaw >= 0) ? "-" : "+") + ((tzHour < 10) ? "0" : "") + tzHour + ((tzMin < 10) ? "0" : "") + tzMin;
	if( tz != tzString ) {
		var junk = msg.split( '$1' );
		document.write( junk[0] + "UTC" + tzString + junk[1] );
	}
}
function unhidetzbutton() {
    tzb = document.getElementById('guesstimezonebutton')
    if(tzb) tzb.style.display = 'inline';
}

// in [-]HH:MM format...
// won't yet work with non-even tzs
function fetchTimezone() {
	// FIXME: work around Safari bug
	var localclock = new Date();
	// returns negative offset from GMT in minutes
	var tzRaw = localclock.getTimezoneOffset();
	var tzHour = Math.floor( Math.abs(tzRaw) / 60);
	var tzMin = Math.abs(tzRaw) % 60;
	var tzString = ((tzRaw >= 0) ? "-" : "") + ((tzHour < 10) ? "0" : "") + tzHour +
		":" + ((tzMin < 10) ? "0" : "") + tzMin;
	return tzString;
}

function guessTimezone(box) {
	document.preferences.wpHourDiff.value = fetchTimezone();
}

function showTocToggle() {
  if (document.createTextNode) {
    // Uses DOM calls to avoid document.write + XHTML issues

    var linkHolder = document.getElementById('toctitle')
    if (!linkHolder) return;

    var outerSpan = document.createElement('span');
    outerSpan.className = 'toctoggle';

    var toggleLink = document.createElement('a');
    toggleLink.id = 'togglelink';
    toggleLink.className = 'internal';
    toggleLink.href = 'javascript:toggleToc()';
    toggleLink.appendChild(document.createTextNode(tocHideText));

    outerSpan.appendChild(document.createTextNode('['));
    outerSpan.appendChild(toggleLink);
    outerSpan.appendChild(document.createTextNode(']'));

    linkHolder.appendChild(document.createTextNode(' '));
    linkHolder.appendChild(outerSpan);

    var cookiePos = document.cookie.indexOf("hidetoc=");
    if (cookiePos > -1 && document.cookie.charAt(cookiePos + 8) == 1)
     toggleToc();
  }
}

function changeText(el, newText) {
  // Safari work around
  if (el.innerText)
    el.innerText = newText;
  else if (el.firstChild && el.firstChild.nodeValue)
    el.firstChild.nodeValue = newText;
}
  
function toggleToc() {
 	var toc = document.getElementById('toc').getElementsByTagName('ul')[0];
  var toggleLink = document.getElementById('togglelink')
  
 	if(toc && toggleLink && toc.style.display == 'none') {