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offset.js
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module("offset", { teardown: moduleTeardown });
test("disconnected node", function() {
expect(2);
var result = jQuery( document.createElement("div") ).offset();
equals( result.top, 0, "Check top" );
equals( result.left, 0, "Check left" );
});
var supportsScroll = false;
testoffset("absolute"/* in iframe */, function($, iframe) {
expect(4);
var doc = iframe.document, tests;
// force a scroll value on the main window
// this insures that the results will be wrong
// if the offset method is using the scroll offset
// of the parent window
var forceScroll = jQuery('<div>', { width: 2000, height: 2000 }).appendTo('body');
window.scrollTo(200, 200);
if ( document.documentElement.scrollTop || document.body.scrollTop ) {
supportsScroll = true;
}
window.scrollTo(1, 1);
// get offset
tests = [
{ id: '#absolute-1', top: 1, left: 1 }
];
jQuery.each( tests, function() {
equals( jQuery( this.id, doc ).offset().top, this.top, "jQuery('" + this.id + "').offset().top" );
equals( jQuery( this.id, doc ).offset().left, this.left, "jQuery('" + this.id + "').offset().left" );
});
// get position
tests = [
{ id: '#absolute-1', top: 0, left: 0 }
];
jQuery.each( tests, function() {
equals( jQuery( this.id, doc ).position().top, this.top, "jQuery('" + this.id + "').position().top" );
equals( jQuery( this.id, doc ).position().left, this.left, "jQuery('" + this.id + "').position().left" );
});
forceScroll.remove();
});
testoffset("absolute", function( jQuery ) {
expect(178);
// get offset tests
var tests = [
{ id: '#absolute-1', top: 1, left: 1 },
{ id: '#absolute-1-1', top: 5, left: 5 },
{ id: '#absolute-1-1-1', top: 9, left: 9 },
{ id: '#absolute-2', top: 20, left: 20 }
];
jQuery.each( tests, function() {
equals( jQuery( this.id ).offset().top, this.top, "jQuery('" + this.id + "').offset().top" );
equals( jQuery( this.id ).offset().left, this.left, "jQuery('" + this.id + "').offset().left" );
});
// get position
tests = [
{ id: '#absolute-1', top: 0, left: 0 },
{ id: '#absolute-1-1', top: 1, left: 1 },
{ id: '#absolute-1-1-1', top: 1, left: 1 },
{ id: '#absolute-2', top: 19, left: 19 }
];
jQuery.each( tests, function() {
equals( jQuery( this.id ).position().top, this.top, "jQuery('" + this.id + "').position().top" );
equals( jQuery( this.id ).position().left, this.left, "jQuery('" + this.id + "').position().left" );
});
// test #5781
var offset = jQuery( '#positionTest' ).offset({ top: 10, left: 10 }).offset();
equals( offset.top, 10, "Setting offset on element with position absolute but 'auto' values." )
equals( offset.left, 10, "Setting offset on element with position absolute but 'auto' values." )
// set offset
tests = [
{ id: '#absolute-2', top: 30, left: 30 },
{ id: '#absolute-2', top: 10, left: 10 },
{ id: '#absolute-2', top: -1, left: -1 },
{ id: '#absolute-2', top: 19, left: 19 },
{ id: '#absolute-1-1-1', top: 15, left: 15 },
{ id: '#absolute-1-1-1', top: 5, left: 5 },
{ id: '#absolute-1-1-1', top: -1, left: -1 },
{ id: '#absolute-1-1-1', top: 9, left: 9 },
{ id: '#absolute-1-1', top: 10, left: 10 },
{ id: '#absolute-1-1', top: 0, left: 0 },
{ id: '#absolute-1-1', top: -1, left: -1 },
{ id: '#absolute-1-1', top: 5, left: 5 },
{ id: '#absolute-1', top: 2, left: 2 },
{ id: '#absolute-1', top: 0, left: 0 },
{ id: '#absolute-1', top: -1, left: -1 },
{ id: '#absolute-1', top: 1, left: 1 }
];
jQuery.each( tests, function() {
jQuery( this.id ).offset({ top: this.top, left: this.left });
equals( jQuery( this.id ).offset().top, this.top, "jQuery('" + this.id + "').offset({ top: " + this.top + " })" );
equals( jQuery( this.id ).offset().left, this.left, "jQuery('" + this.id + "').offset({ left: " + this.left + " })" );
var top = this.top, left = this.left;
jQuery( this.id ).offset(function(i, val){
equals( val.top, top, "Verify incoming top position." );
equals( val.left, left, "Verify incoming top position." );
return { top: top + 1, left: left + 1 };
});
equals( jQuery( this.id ).offset().top, this.top + 1, "jQuery('" + this.id + "').offset({ top: " + (this.top + 1) + " })" );
equals( jQuery( this.id ).offset().left, this.left + 1, "jQuery('" + this.id + "').offset({ left: " + (this.left + 1) + " })" );
jQuery( this.id )
.offset({ left: this.left + 2 })
.offset({ top: this.top + 2 });
equals( jQuery( this.id ).offset().top, this.top + 2, "Setting one property at a time." );
equals( jQuery( this.id ).offset().left, this.left + 2, "Setting one property at a time." );
jQuery( this.id ).offset({ top: this.top, left: this.left, using: function( props ) {
jQuery( this ).css({
top: props.top + 1,
left: props.left + 1
});
}});
equals( jQuery( this.id ).offset().top, this.top + 1, "jQuery('" + this.id + "').offset({ top: " + (this.top + 1) + ", using: fn })" );
equals( jQuery( this.id ).offset().left, this.left + 1, "jQuery('" + this.id + "').offset({ left: " + (this.left + 1) + ", using: fn })" );
});
});
testoffset("relative", function( jQuery ) {
expect(60);
// IE is collapsing the top margin of 1px
var ie = jQuery.browser.msie && parseInt( jQuery.browser.version, 10 ) < 8;
// get offset
var tests = [
{ id: '#relative-1', top: ie ? 6 : 7, left: 7 },
{ id: '#relative-1-1', top: ie ? 13 : 15, left: 15 },
{ id: '#relative-2', top: ie ? 141 : 142, left: 27 }
];
jQuery.each( tests, function() {
equals( jQuery( this.id ).offset().top, this.top, "jQuery('" + this.id + "').offset().top" );
equals( jQuery( this.id ).offset().left, this.left, "jQuery('" + this.id + "').offset().left" );
});
// get position
tests = [
{ id: '#relative-1', top: ie ? 5 : 6, left: 6 },
{ id: '#relative-1-1', top: ie ? 4 : 5, left: 5 },
{ id: '#relative-2', top: ie ? 140 : 141, left: 26 }
];
jQuery.each( tests, function() {
equals( jQuery( this.id ).position().top, this.top, "jQuery('" + this.id + "').position().top" );
equals( jQuery( this.id ).position().left, this.left, "jQuery('" + this.id + "').position().left" );
});
// set offset
tests = [
{ id: '#relative-2', top: 200, left: 50 },
{ id: '#relative-2', top: 100, left: 10 },
{ id: '#relative-2', top: -5, left: -5 },
{ id: '#relative-2', top: 142, left: 27 },
{ id: '#relative-1-1', top: 100, left: 100 },
{ id: '#relative-1-1', top: 5, left: 5 },
{ id: '#relative-1-1', top: -1, left: -1 },
{ id: '#relative-1-1', top: 15, left: 15 },
{ id: '#relative-1', top: 100, left: 100 },
{ id: '#relative-1', top: 0, left: 0 },
{ id: '#relative-1', top: -1, left: -1 },
{ id: '#relative-1', top: 7, left: 7 }
];
jQuery.each( tests, function() {
jQuery( this.id ).offset({ top: this.top, left: this.left });
equals( jQuery( this.id ).offset().top, this.top, "jQuery('" + this.id + "').offset({ top: " + this.top + " })" );
equals( jQuery( this.id ).offset().left, this.left, "jQuery('" + this.id + "').offset({ left: " + this.left + " })" );
jQuery( this.id ).offset({ top: this.top, left: this.left, using: function( props ) {
jQuery( this ).css({
top: props.top + 1,
left: props.left + 1
});
}});
equals( jQuery( this.id ).offset().top, this.top + 1, "jQuery('" + this.id + "').offset({ top: " + (this.top + 1) + ", using: fn })" );
equals( jQuery( this.id ).offset().left, this.left + 1, "jQuery('" + this.id + "').offset({ left: " + (this.left + 1) + ", using: fn })" );
});
});
testoffset("static", function( jQuery ) {
expect(80);
// IE is collapsing the top margin of 1px
var ie = jQuery.browser.msie && parseInt( jQuery.browser.version, 10 ) < 8;
// get offset
var tests = [
{ id: '#static-1', top: ie ? 6 : 7, left: 7 },
{ id: '#static-1-1', top: ie ? 13 : 15, left: 15 },
{ id: '#static-1-1-1', top: ie ? 20 : 23, left: 23 },
{ id: '#static-2', top: ie ? 121 : 122, left: 7 }
];
jQuery.each( tests, function() {
equals( jQuery( this.id ).offset().top, this.top, "jQuery('" + this.id + "').offset().top" );
equals( jQuery( this.id ).offset().left, this.left, "jQuery('" + this.id + "').offset().left" );
});
// get position
tests = [
{ id: '#static-1', top: ie ? 5 : 6, left: 6 },
{ id: '#static-1-1', top: ie ? 12 : 14, left: 14 },
{ id: '#static-1-1-1', top: ie ? 19 : 22, left: 22 },
{ id: '#static-2', top: ie ? 120 : 121, left: 6 }
];
jQuery.each( tests, function() {
equals( jQuery( this.id ).position().top, this.top, "jQuery('" + this.top + "').position().top" );
equals( jQuery( this.id ).position().left, this.left, "jQuery('" + this.left +"').position().left" );
});
// set offset
tests = [
{ id: '#static-2', top: 200, left: 200 },
{ id: '#static-2', top: 100, left: 100 },
{ id: '#static-2', top: -2, left: -2 },
{ id: '#static-2', top: 121, left: 6 },
{ id: '#static-1-1-1', top: 50, left: 50 },
{ id: '#static-1-1-1', top: 10, left: 10 },
{ id: '#static-1-1-1', top: -1, left: -1 },
{ id: '#static-1-1-1', top: 22, left: 22 },
{ id: '#static-1-1', top: 25, left: 25 },
{ id: '#static-1-1', top: 10, left: 10 },
{ id: '#static-1-1', top: -3, left: -3 },
{ id: '#static-1-1', top: 14, left: 14 },
{ id: '#static-1', top: 30, left: 30 },
{ id: '#static-1', top: 2, left: 2 },
{ id: '#static-1', top: -2, left: -2 },
{ id: '#static-1', top: 7, left: 7 }
];
jQuery.each( tests, function() {
jQuery( this.id ).offset({ top: this.top, left: this.left });
equals( jQuery( this.id ).offset().top, this.top, "jQuery('" + this.id + "').offset({ top: " + this.top + " })" );
equals( jQuery( this.id ).offset().left, this.left, "jQuery('" + this.id + "').offset({ left: " + this.left + " })" );
jQuery( this.id ).offset({ top: this.top, left: this.left, using: function( props ) {
jQuery( this ).css({
top: props.top + 1,
left: props.left + 1
});
}});
equals( jQuery( this.id ).offset().top, this.top + 1, "jQuery('" + this.id + "').offset({ top: " + (this.top + 1) + ", using: fn })" );
equals( jQuery( this.id ).offset().left, this.left + 1, "jQuery('" + this.id + "').offset({ left: " + (this.left + 1) + ", using: fn })" );
});
});
testoffset("fixed", function( jQuery ) {
expect(30);
jQuery.offset.initialize();
var tests = [
{ id: '#fixed-1', top: 1001, left: 1001 },
{ id: '#fixed-2', top: 1021, left: 1021 }
];
jQuery.each( tests, function() {
if ( !supportsScroll ) {
ok( true, "Browser doesn't support scroll position." );
ok( true, "Browser doesn't support scroll position." );
} else if ( jQuery.offset.supportsFixedPosition ) {
equals( jQuery( this.id ).offset().top, this.top, "jQuery('" + this.id + "').offset().top" );
equals( jQuery( this.id ).offset().left, this.left, "jQuery('" + this.id + "').offset().left" );
} else {
// need to have same number of assertions
ok( true, 'Fixed position is not supported' );
ok( true, 'Fixed position is not supported' );
}
});
tests = [
{ id: '#fixed-1', top: 100, left: 100 },
{ id: '#fixed-1', top: 0, left: 0 },
{ id: '#fixed-1', top: -4, left: -4 },
{ id: '#fixed-2', top: 200, left: 200 },
{ id: '#fixed-2', top: 0, left: 0 },
{ id: '#fixed-2', top: -5, left: -5 }
];
jQuery.each( tests, function() {
if ( jQuery.offset.supportsFixedPosition ) {
jQuery( this.id ).offset({ top: this.top, left: this.left });
equals( jQuery( this.id ).offset().top, this.top, "jQuery('" + this.id + "').offset({ top: " + this.top + " })" );
equals( jQuery( this.id ).offset().left, this.left, "jQuery('" + this.id + "').offset({ left: " + this.left + " })" );
jQuery( this.id ).offset({ top: this.top, left: this.left, using: function( props ) {
jQuery( this ).css({
top: props.top + 1,
left: props.left + 1
});
}});
equals( jQuery( this.id ).offset().top, this.top + 1, "jQuery('" + this.id + "').offset({ top: " + (this.top + 1) + ", using: fn })" );
equals( jQuery( this.id ).offset().left, this.left + 1, "jQuery('" + this.id + "').offset({ left: " + (this.left + 1) + ", using: fn })" );
} else {
// need to have same number of assertions
ok( true, 'Fixed position is not supported' );
ok( true, 'Fixed position is not supported' );
ok( true, 'Fixed position is not supported' );
ok( true, 'Fixed position is not supported' );
}
});
// Bug 8316
var $noTopLeft = jQuery('#fixed-no-top-left');
if ( jQuery.offset.supportsFixedPosition ) {
equals( $noTopLeft.offset().top, 1007, "Check offset top for fixed element with no top set" );
equals( $noTopLeft.offset().left, 1007, "Check offset left for fixed element with no left set" );
} else {
// need to have same number of assertions
ok( true, 'Fixed position is not supported' );
ok( true, 'Fixed position is not supported' );
}
});
testoffset("table", function( jQuery ) {
expect(4);
equals( jQuery('#table-1').offset().top, 6, "jQuery('#table-1').offset().top" );
equals( jQuery('#table-1').offset().left, 6, "jQuery('#table-1').offset().left" );
equals( jQuery('#th-1').offset().top, 10, "jQuery('#th-1').offset().top" );
equals( jQuery('#th-1').offset().left, 10, "jQuery('#th-1').offset().left" );
});
testoffset("scroll", function( jQuery, win ) {
expect(16);
var ie = jQuery.browser.msie && parseInt( jQuery.browser.version, 10 ) < 8;
// IE is collapsing the top margin of 1px
equals( jQuery('#scroll-1').offset().top, ie ? 6 : 7, "jQuery('#scroll-1').offset().top" );
equals( jQuery('#scroll-1').offset().left, 7, "jQuery('#scroll-1').offset().left" );
// IE is collapsing the top margin of 1px
equals( jQuery('#scroll-1-1').offset().top, ie ? 9 : 11, "jQuery('#scroll-1-1').offset().top" );
equals( jQuery('#scroll-1-1').offset().left, 11, "jQuery('#scroll-1-1').offset().left" );
// scroll offset tests .scrollTop/Left
equals( jQuery('#scroll-1').scrollTop(), 5, "jQuery('#scroll-1').scrollTop()" );
equals( jQuery('#scroll-1').scrollLeft(), 5, "jQuery('#scroll-1').scrollLeft()" );
equals( jQuery('#scroll-1-1').scrollTop(), 0, "jQuery('#scroll-1-1').scrollTop()" );
equals( jQuery('#scroll-1-1').scrollLeft(), 0, "jQuery('#scroll-1-1').scrollLeft()" );
// equals( jQuery('body').scrollTop(), 0, "jQuery('body').scrollTop()" );
// equals( jQuery('body').scrollLeft(), 0, "jQuery('body').scrollTop()" );
win.name = "test";
if ( !supportsScroll ) {
ok( true, "Browser doesn't support scroll position." );
ok( true, "Browser doesn't support scroll position." );
ok( true, "Browser doesn't support scroll position." );
ok( true, "Browser doesn't support scroll position." );
} else {
equals( jQuery(win).scrollTop(), 1000, "jQuery(window).scrollTop()" );
equals( jQuery(win).scrollLeft(), 1000, "jQuery(window).scrollLeft()" );
equals( jQuery(win.document).scrollTop(), 1000, "jQuery(document).scrollTop()" );
equals( jQuery(win.document).scrollLeft(), 1000, "jQuery(document).scrollLeft()" );
}
// test jQuery using parent window/document
// jQuery reference here is in the iframe
window.scrollTo(0,0);
equals( jQuery(window).scrollTop(), 0, "jQuery(window).scrollTop() other window" );
equals( jQuery(window).scrollLeft(), 0, "jQuery(window).scrollLeft() other window" );
equals( jQuery(document).scrollTop(), 0, "jQuery(window).scrollTop() other document" );
equals( jQuery(document).scrollLeft(), 0, "jQuery(window).scrollLeft() other document" );
});
testoffset("body", function( jQuery ) {
expect(2);
equals( jQuery('body').offset().top, 1, "jQuery('#body').offset().top" );
equals( jQuery('body').offset().left, 1, "jQuery('#body').offset().left" );
});
test("Chaining offset(coords) returns jQuery object", function() {
expect(2);
var coords = { top: 1, left: 1 };
equals( jQuery("#absolute-1").offset(coords).selector, "#absolute-1", "offset(coords) returns jQuery object" );
equals( jQuery("#non-existent").offset(coords).selector, "#non-existent", "offset(coords) with empty jQuery set returns jQuery object" );
});
test("offsetParent", function(){
expect(11);
var body = jQuery("body").offsetParent();
equals( body.length, 1, "Only one offsetParent found." );
equals( body[0], document.body, "The body is its own offsetParent." );
var header = jQuery("#qunit-header").offsetParent();
equals( header.length, 1, "Only one offsetParent found." );
equals( header[0], document.body, "The body is the offsetParent." );
var div = jQuery("#nothiddendivchild").offsetParent();
equals( div.length, 1, "Only one offsetParent found." );
equals( div[0], document.body, "The body is the offsetParent." );
jQuery("#nothiddendiv").css("position", "relative");
div = jQuery("#nothiddendivchild").offsetParent();
equals( div.length, 1, "Only one offsetParent found." );
equals( div[0], jQuery("#nothiddendiv")[0], "The div is the offsetParent." );
div = jQuery("body, #nothiddendivchild").offsetParent();
equals( div.length, 2, "Two offsetParent found." );
equals( div[0], document.body, "The body is the offsetParent." );
equals( div[1], jQuery("#nothiddendiv")[0], "The div is the offsetParent." );
});
function testoffset( name, fn ) {
test(name, function() {
// pause execution for now
stop();
// load fixture in iframe
var iframe = loadFixture(),
win = iframe.contentWindow,
interval = setInterval( function() {
if ( win && win.jQuery && win.jQuery.isReady ) {
clearInterval( interval );
// continue
start();
// call actual tests passing the correct jQuery isntance to use
fn.call( this, win.jQuery, win );
document.body.removeChild( iframe );
iframe = null;
}
}, 15 );
});
function loadFixture() {
var src = './data/offset/' + name + '.html?' + parseInt( Math.random()*1000, 10 ),
iframe = jQuery('<iframe />').css({
width: 500, height: 500, position: 'absolute', top: -600, left: -600, visibility: 'hidden'
}).appendTo('body')[0];
iframe.contentWindow.location = src;
return iframe;
}
}