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Fix the clone method to be a little less insane in IE, which fixes th…

…e new event-cloning clone() as well as probably a bunch of IE-related clone bugs.
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csnover committed Dec 12, 2010
1 parent e4900df commit 7481a3645af63cef1406687190fd62bdfb1bf254
Showing with 65 additions and 33 deletions.
  1. +31 −25 src/manipulation.js
  2. +34 −8 test/unit/manipulation.js
@@ -9,7 +9,6 @@ var rinlinejQuery = / jQuery\d+="(?:\d+|null)"/g,
rnocache = /<(?:script|object|embed|option|style)/i,
// checked="checked" or checked (html5)
rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i,
raction = /\=([^="'>\s]+\/)>/g,
wrapMap = {
option: [ 1, "<select multiple='multiple'>", "</select>" ],
legend: [ 1, "<fieldset>", "</fieldset>" ],
@@ -187,31 +186,38 @@ jQuery.fn.extend({
clone: function( events ) {
// Do the clone
var ret = this.map(function() {
if ( !jQuery.support.noCloneEvent && !jQuery.isXMLDoc(this) ) {
// IE copies events bound via attachEvent when
// using cloneNode. Calling detachEvent on the
// clone will also remove the events from the orignal
// In order to get around this, we use innerHTML.
// Unfortunately, this means some modifications to
// attributes in IE that are actually only stored
// as properties will not be copied (such as the
// the name attribute on an input).
var html = this.outerHTML,
ownerDocument = this.ownerDocument;

if ( !html ) {
var div = ownerDocument.createElement("div");
div.appendChild( this.cloneNode(true) );
html = div.innerHTML;
}
var clone = this.cloneNode(true);
if ( !jQuery.support.noCloneEvent && (this.nodeType === 1 || this.nodeType === 11) && !jQuery.isXMLDoc(this) ) {

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@jdalton

jdalton Jan 20, 2011

Member

The clone events bug and the attributes bugs seem to be different issues. Is there a case, maybe IE9, where one bug is fixed and the other is not. Maybe if the concerns were separated it would allow a boost for when IE starts to fix some of the problems.

// IE copies events bound via attachEvent when using cloneNode.
// Calling detachEvent on the clone will also remove the events
// from the original. In order to get around this, we use some
// proprietary methods to clear the events. Thanks to MooTools
// guys for this hotness.
var srcElements = jQuery(this).find('*').andSelf();
jQuery(clone).find('*').andSelf().each(function (i, clone) {
// We do not need to do anything for non-Elements
if (this.nodeType !== 1) {
return;
}

return jQuery.clean([html.replace(rinlinejQuery, "")
// Handle the case in IE 8 where action=/test/> self-closes a tag
.replace(raction, '="$1">')
.replace(rleadingWhitespace, "")], ownerDocument)[0];
} else {
return this.cloneNode(true);
// clearAttributes removes the attributes, but also
// removes the attachEvent events
clone.clearAttributes();

// mergeAttributes only merges back on the original attributes,
// not the events
clone.mergeAttributes(srcElements[i]);

// IE6-8 fail to clone children inside object elements that use
// the proprietary classid attribute value (rather than the type
// attribute) to identify the type of content to display
if (clone.nodeName.toLowerCase() === 'object') {
clone.outerHTML = srcElements[i].outerHTML;
}
});
}

return clone;
});

// Copy the events from the original to the clone
@@ -375,7 +381,7 @@ function cloneCopyEvent(orig, ret) {
var i = 0;

ret.each(function() {
if ( this.nodeName !== (orig[i] && orig[i].nodeName) ) {
if ( this.nodeType !== 1 || this.nodeName !== (orig[i] && orig[i].nodeName) ) {
return;
}

@@ -382,10 +382,24 @@ test("append(Function) with incoming value", function() {
});

test("append the same fragment with events (Bug #6997, 5566)", function () {
expect(2);
expect(2 + (document.fireEvent ? 1 : 0));
stop(1000);

var element = jQuery("<a class='test6997'></a>").click(function () {
var element;

// This patch modified the way that cloning occurs in IE; we need to make sure that
// native event handlers on the original object don’t get disturbed when they are
// modified on the clone
if (!jQuery.support.noCloneEvent && document.fireEvent) {
element = jQuery("div:first").click(function () {
ok(true, "Event exists on original after being unbound on clone");
jQuery(this).unbind('click');
});
element.clone(true).unbind('click')[0].fireEvent('onclick');
element[0].fireEvent('onclick');
}

element = jQuery("<a class='test6997'></a>").click(function () {
ok(true, "Append second element events work");
});

@@ -834,7 +848,7 @@ test("replaceAll(String|Element|Array&lt;Element&gt;|jQuery)", function() {
});

test("clone()", function() {
expect(31);
expect(35);
equals( 'This is a normal link: Yahoo', jQuery('#en').text(), 'Assert text for #en' );
var clone = jQuery('#yahoo').clone();
equals( 'Try them out:Yahoo', jQuery('#first').append(clone).text(), 'Check for clone' );
@@ -848,7 +862,7 @@ test("clone()", function() {
];
for (var i = 0; i < cloneTags.length; i++) {
var j = jQuery(cloneTags[i]);
equals( j[0].tagName, j.clone()[0].tagName, 'Clone a &lt;' + cloneTags[i].substring(1));
equals( j[0].tagName, j.clone()[0].tagName, 'Clone a ' + cloneTags[i]);
}

// using contents will get comments regular, text, and comment nodes
@@ -874,11 +888,23 @@ test("clone()", function() {
equals( div[0].nodeName.toUpperCase(), "DIV", "DIV element cloned" );
div.find("table:last").trigger("click");

div = jQuery("<div/>").html('<object height="355" width="425"> <param name="movie" value="http://www.youtube.com/v/JikaHBDoV3k&amp;hl=en"> <param name="wmode" value="transparent"> </object>');
// this is technically an invalid object, but because of the special
// classid instantiation it is the only kind that IE has trouble with,
// so let’s test with it too.
div = jQuery("<div/>").html('<object height="355" width="425" classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"> <param name="movie" value="http://www.youtube.com/v/3KANI2dpXLw&amp;hl=en"> <param name="wmode" value="transparent"> </object>');

div = div.clone(true);
equals( div.length, 1, "One element cloned" );
equals( div[0].nodeName.toUpperCase(), "DIV", "DIV element cloned" );
clone = div.clone(true);
equals( clone.length, 1, "One element cloned" );
equals( clone.html(), div.html(), "Element contents cloned" );
equals( clone[0].nodeName.toUpperCase(), "DIV", "DIV element cloned" );

// and here's a valid one.
div = jQuery("<div/>").html('<object height="355" width="425" type="application/x-shockwave-flash" data="http://www.youtube.com/v/3KANI2dpXLw&amp;hl=en"> <param name="movie" value="http://www.youtube.com/v/3KANI2dpXLw&amp;hl=en"> <param name="wmode" value="transparent"> </object>');

clone = div.clone(true);
equals( clone.length, 1, "One element cloned" );
equals( clone.html(), div.html(), "Element contents cloned" );
equals( clone[0].nodeName.toUpperCase(), "DIV", "DIV element cloned" );

div = jQuery("<div/>").data({ a: true, b: true });
div = div.clone(true);

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