MediaWiki:JQuery.Columnizer.js - Versionsgeschichte

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2011-10-17T20:42:08Z

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(function($){$.fn.columnize=function(options){var defaults={width:400,columns:false,buildOnce:false,overflow:false,doneFunc:function(){},target:false,ignoreImageLoading:true,float:"left",lastNeverTallest:false};var options=$.extend(defaults,options);return this.each(function(){var $inBox=options.target?$(options.target):$(this);var maxHeight=$(this).height();var $cache=$('<div></div>');var lastWidth=0;var columnizing=false;$cache.append($(this).children().clone(true));if(!options.ignoreImageLoading&&!options.target){if(!$inBox.data("imageLoaded")){$inBox.data("imageLoaded",true);if($(this).find("img").length>0){var func=function($inBox,$cache){return function(){if(!$inBox.data("firstImageLoaded")){$inBox.data("firstImageLoaded","true");$inBox.empty().append($cache.children().clone(true));$inBox.columnize(options);}}}($(this),$cache);$(this).find("img").one("load",func);$(this).find("img").one("abort",func);return;}}}
$inBox.empty();columnizeIt();if(!options.buildOnce){$(window).resize(function(){if(!options.buildOnce&&$.browser.msie){if($inBox.data("timeout")){clearTimeout($inBox.data("timeout"));}
$inBox.data("timeout",setTimeout(columnizeIt,200));}else if(!options.buildOnce){columnizeIt();}else{}});}
function columnize($putInHere,$pullOutHere,$parentColumn,height){while($parentColumn.height()<height&&$pullOutHere[0].childNodes.length){$putInHere.append($pullOutHere[0].childNodes[0]);}
if($putInHere[0].childNodes.length==0)return;var kids=$putInHere[0].childNodes;var lastKid=kids[kids.length-1];$putInHere[0].removeChild(lastKid);var $item=$(lastKid);if($item[0].nodeType==3){var oText=$item[0].nodeValue;var counter2=options.width/18;if(options.accuracy)
counter2=options.accuracy;var columnText;var latestTextNode=null;while($parentColumn.height()<height&&oText.length){if(oText.indexOf(' ',counter2)!='-1'){columnText=oText.substring(0,oText.indexOf(' ',counter2));}else{columnText=oText;}
latestTextNode=document.createTextNode(columnText);$putInHere.append(latestTextNode);if(oText.length>counter2){oText=oText.substring(oText.indexOf(' ',counter2));}else{oText="";}}
if($parentColumn.height()>=height&&latestTextNode!=null){$putInHere[0].removeChild(latestTextNode);oText=latestTextNode.nodeValue+oText;}
if(oText.length){$item[0].nodeValue=oText;}else{return false;}}
if($pullOutHere.children().length){$pullOutHere.prepend($item);}else{$pullOutHere.append($item);}
return $item[0].nodeType==3;}
function split($putInHere,$pullOutHere,$parentColumn,height){if($pullOutHere.children().length){$cloneMe=$pullOutHere.children(":first");$clone=$cloneMe.clone(true);if($clone.attr("nodeType")==1&&!$clone.hasClass("dontend")){$putInHere.append($clone);if($clone.is("img")&&$parentColumn.height()<height+20){$cloneMe.remove();}else if(!$cloneMe.hasClass("dontsplit")&&$parentColumn.height()<height+20){$cloneMe.remove();}else if($clone.is("img")||$cloneMe.hasClass("dontsplit")){$clone.remove();}else{$clone.empty();if(!columnize($clone,$cloneMe,$parentColumn,height)){if($cloneMe.children().length){split($clone,$cloneMe,$parentColumn,height);}}
if($clone.get(0).childNodes.length==0){$clone.remove();}}}}}
function singleColumnizeIt(){if($inBox.data("columnized")&&$inBox.children().length==1){return;}
$inBox.data("columnized",true);$inBox.data("columnizing",true);$inBox.empty();$inBox.append($("<div class='first last column' style='width:98%; padding: 3px; float: "+options.float+";'></div>"));$col=$inBox.children().eq($inBox.children().length-1);$destroyable=$cache.clone(true);if(options.overflow){targetHeight=options.overflow.height;columnize($col,$destroyable,$col,targetHeight);if(!$destroyable.children().find(":first-child").hasClass("dontend")){split($col,$destroyable,$col,targetHeight);}
while(checkDontEndColumn($col.children(":last").length&&$col.children(":last").get(0))){var $lastKid=$col.children(":last");$lastKid.remove();$destroyable.prepend($lastKid);}
var html="";var div=document.createElement('DIV');while($destroyable[0].childNodes.length>0){var kid=$destroyable[0].childNodes[0];for(var i=0;i<kid.attributes.length;i++){if(kid.attributes[i].nodeName.indexOf("jQuery")==0){kid.removeAttribute(kid.attributes[i].nodeName);}}
div.innerHTML="";div.appendChild($destroyable[0].childNodes[0]);html+=div.innerHTML;}
var overflow=$(options.overflow.id)[0];overflow.innerHTML=html;}else{$col.append($destroyable);}
$inBox.data("columnizing",false);if(options.overflow){options.overflow.doneFunc();}}
function checkDontEndColumn(dom){if(dom.nodeType!=1)return false;if($(dom).hasClass("dontend"))return true;if(dom.childNodes.length==0)return false;return checkDontEndColumn(dom.childNodes[dom.childNodes.length-1]);}
function columnizeIt(){if(lastWidth==$inBox.width())return;lastWidth=$inBox.width();var numCols=Math.round($inBox.width()/options.width);if(options.columns)numCols=options.columns;if(numCols<=1){return singleColumnizeIt();}
if($inBox.data("columnizing"))return;$inBox.data("columnized",true);$inBox.data("columnizing",true);$inBox.empty();$inBox.append($("<div style='width:"+(Math.round(100/numCols)-2)+"%; padding: 3px; float: "+options.float+";'></div>"));$col=$inBox.children(":last");$col.append($cache.clone());maxHeight=$col.height();$inBox.empty();var targetHeight=maxHeight/numCols;var firstTime=true;var maxLoops=3;var scrollHorizontally=false;if(options.overflow){maxLoops=1;targetHeight=options.overflow.height;}else if(options.height&&options.width){maxLoops=1;targetHeight=options.height;scrollHorizontally=true;}
for(var loopCount=0;loopCount<maxLoops;loopCount++){$inBox.empty();var $destroyable;try{$destroyable=$cache.clone(true);}catch(e){$destroyable=$cache.clone();}
$destroyable.css("visibility","hidden");for(var i=0;i<numCols;i++){var className=(i==0)?"first column":"column";var className=(i==numCols-1)?("last "+className):className;$inBox.append($("<div class='"+className+"' style='width:"+(Math.round(100/numCols)-2)+"%; float: "+options.float+";'></div>"));}
var i=0;while(i<numCols-(options.overflow?0:1)||scrollHorizontally&&$destroyable.children().length){if($inBox.children().length<=i){$inBox.append($("<div class='"+className+"' style='width:"+(Math.round(100/numCols)-2)+"%; float: "+options.float+";'></div>"));}
var $col=$inBox.children().eq(i);columnize($col,$destroyable,$col,targetHeight);if(!$destroyable.children().find(":first-child").hasClass("dontend")){split($col,$destroyable,$col,targetHeight);}else{}
while(checkDontEndColumn($col.children(":last").length&&$col.children(":last").get(0))){var $lastKid=$col.children(":last");$lastKid.remove();$destroyable.prepend($lastKid);}
i++;}
if(options.overflow&&!scrollHorizontally){var IE6=false;var IE7=(document.all)&&(navigator.appVersion.indexOf("MSIE 7.")!=-1);if(IE6||IE7){var html="";var div=document.createElement('DIV');while($destroyable[0].childNodes.length>0){var kid=$destroyable[0].childNodes[0];for(var i=0;i<kid.attributes.length;i++){if(kid.attributes[i].nodeName.indexOf("jQuery")==0){kid.removeAttribute(kid.attributes[i].nodeName);}}
div.innerHTML="";div.appendChild($destroyable[0].childNodes[0]);html+=div.innerHTML;}
var overflow=$(options.overflow.id)[0];overflow.innerHTML=html;}else{$(options.overflow.id).empty().append($destroyable.children().clone(true));}}else if(!scrollHorizontally){$col=$inBox.children().eq($inBox.children().length-1);while($destroyable.children().length)$col.append($destroyable.children(":first"));var afterH=$col.height();var diff=afterH-targetHeight;var totalH=0;var min=10000000;var max=0;var lastIsMax=false;$inBox.children().each(function($inBox){return function($item){var h=$inBox.children().eq($item).height();lastIsMax=false;totalH+=h;if(h>max){max=h;lastIsMax=true;}
if(h<min)min=h;}}($inBox));var avgH=totalH/numCols;if(options.lastNeverTallest&&lastIsMax){targetHeight=targetHeight+30;if(loopCount==maxLoops-1)maxLoops++;}else if(max-min>30){targetHeight=avgH+30;}else if(Math.abs(avgH-targetHeight)>20){targetHeight=avgH;}else{loopCount=maxLoops;}}else{$inBox.children().each(function(i){$col=$inBox.children().eq(i);$col.width(options.width+"px");if(i==0){$col.addClass("first");}else if(i==$inBox.children().length-1){$col.addClass("last");}else{$col.removeClass("first");$col.removeClass("last");}});$inBox.width($inBox.children().length*options.width+"px");}
$inBox.append($("<br style='clear:both;'>"));}
$inBox.find('.column').find(':first.removeiffirst').remove();$inBox.find('.column').find(':last.removeiflast').remove();$inBox.data("columnizing",false);if(options.overflow){options.overflow.doneFunc();}
options.doneFunc();}});};})(jQuery);