jquery-ui/tests/unit/draggable/draggable_core.js

/*
 * draggable_core.js
 */

(function( $ ) {

module( "draggable: core" );

test( "element types", function() {
	var typeNames = (
			"p,h1,h2,h3,h4,h5,h6,blockquote,ol,ul,dl,div,form" +
			",table,fieldset,address,ins,del,em,strong,q,cite,dfn,abbr" +
			",acronym,code,samp,kbd,var,img,hr" +
			",input,button,label,select,iframe"
		).split(",");

	expect( typeNames.length * 2 );

	$.each( typeNames, function( i ) {
		var offsetBefore, offsetAfter,
			typeName = typeNames[ i ],
			el = $( document.createElement( typeName ) ).appendTo("#qunit-fixture");

		if ( typeName === "table" ) {
			el.append("<tr><td>content</td></tr>");
		}

		// intrinsic height is incorrect in FF for buttons with no content
		// https://bugzilla.mozilla.org/show_bug.cgi?id=471763
		// Support: FF
		if ( typeName === "button" ) {
			el.text( "button" );
		}

		el.draggable({ cancel: "" });
		offsetBefore = el.offset();
		el.simulate( "drag", {
			dx: 50,
			dy: 50
		});
		offsetAfter = el.offset();

		// Support: FF, Chrome, and IE9,
		// there are some rounding errors in so we can't say equal, we have to settle for close enough
		closeEnough( offsetBefore.left, offsetAfter.left - 50, 1, "dragged[50, 50] " + "<" + typeName + "> left" );
		closeEnough( offsetBefore.top, offsetAfter.top - 50, 1, "dragged[50, 50] " + "<" + typeName + "> top" );
		el.draggable("destroy");
		el.remove();
	});
});

test( "No options, relative", function() {
	expect( 2 );
	TestHelpers.draggable.shouldMove( $( "#draggable1" ).draggable(), "no options, relative" );
});

test( "No options, absolute", function() {
	expect( 2 );
	TestHelpers.draggable.shouldMove( $( "#draggable2" ).draggable(), "no options, absolute" );
});

test( "resizable handle with complex markup (#8756 / #8757)", function() {
	expect( 2 );

	$( "#draggable1" )
		.append(
			$("<div>")
				.addClass("ui-resizable-handle ui-resizable-w")
				.append( $("<div>") )
		);

	var handle = $(".ui-resizable-w div"),
		target = $( "#draggable1" ).draggable().resizable({ handles: "all" });

	// todo: fix resizable so it doesn't require a mouseover
	handle.simulate("mouseover").simulate( "drag", { dx: -50 } );
	equal( target.width(), 250, "compare width" );

	// todo: fix resizable so it doesn't require a mouseover
	handle.simulate("mouseover").simulate( "drag", { dx: 50 } );
	equal( target.width(), 200, "compare width" );
});

test( "#8269: Removing draggable element on drop", function() {
	expect( 2 );

	var element = $( "#draggable1" ).wrap( "<div id='wrapper' />" ).draggable({
			stop: function() {
				ok( true, "stop still called despite element being removed from DOM on drop" );
			}
		}),
		dropOffset = $( "#droppable" ).offset();

	$( "#droppable" ).droppable({
		drop: function() {
			$( "#wrapper" ).remove();
			ok( true, "element removed from DOM on drop" );
		}
	});

	// Support: Opera 12.10, Safari 5.1, jQuery <1.8
	if ( TestHelpers.draggable.unreliableContains ) {
		ok( true, "Opera <12.14 and Safari <6.0 report wrong values for $.contains in jQuery < 1.8" );
		ok( true, "Opera <12.14 and Safari <6.0 report wrong values for $.contains in jQuery < 1.8" );
	} else {
		element.simulate( "drag", {
			handle: "corner",
			x: dropOffset.left,
			y: dropOffset.top
		});
	}
});

// http://bugs.jqueryui.com/ticket/7778
// drag element breaks in IE8 when its content is replaced onmousedown
test( "Stray mousemove after mousedown still drags", function() {
	expect( 2 );

	var element = $( "#draggable1" ).draggable({ scroll: false });

	// In IE8, when content is placed under the mouse (e.g. when draggable content is replaced
	// on mousedown), mousemove is triggered on those elements even though the mouse hasn't moved.
	// Support: IE <9
	element.bind( "mousedown", function() {
		$( document ).simulate( "mousemove", { button: -1 });
	});

	TestHelpers.draggable.shouldMove( element, "element is draggable" );
});

test( "#6258: not following mouse when scrolled and using overflow-y: scroll", function() {
	expect( 2 );

	var element = $( "#draggable1" ).draggable({
			stop: function( event, ui ) {
				equal( ui.position.left, 1, "left position is correct despite overflow on HTML" );
				equal( ui.position.top, 1, "top position is correct despite overflow on HTML" );
				$( "html" )
					.css( "overflow-y", oldOverflowY )
					.css( "overflow-x", oldOverflowX )
					.scrollTop( 0 )
					.scrollLeft( 0 );
			}
		}),
		oldOverflowY = $( "html" ).css( "overflow-y" ),
		oldOverflowX = $( "html" ).css( "overflow-x" );

		TestHelpers.forceScrollableWindow();

		$( "html" )
			.css( "overflow-y", "scroll" )
			.css( "overflow-x", "scroll" )
			.scrollTop( 300 )
			.scrollLeft( 300 );

		element.simulate( "drag", {
			dx: 1,
			dy: 1,
			moves: 1
		});
});

test( "#9315: jumps down with offset of scrollbar", function() {
	expect( 2 );

	var element = $( "#draggable2" ).draggable({
			stop: function( event, ui ) {
				equal( ui.position.left, 11, "left position is correct when position is absolute" );
				equal( ui.position.top, 11, "top position is correct when position is absolute" );
				$( "html" ).scrollTop( 0 ).scrollLeft( 0 );
			}
		});

		TestHelpers.forceScrollableWindow();

		$( "html" ).scrollTop( 300 ).scrollLeft( 300 );

		element.simulate( "drag", {
			dx: 1,
			dy: 1,
			moves: 1
		});
});

test( "scroll offset with fixed ancestors", function() {
	expect( 2 );

	var startValue = 300,
		element = $( "#draggable1" )
			// http://bugs.jqueryui.com/ticket/5009
			// scroll not working with parent's position fixed
			.wrap( "<div id='wrapper' />" )
			// http://bugs.jqueryui.com/ticket/9612
			// abspos elements inside of fixed elements moving away from the mouse when scrolling
			.wrap( "<div id='wrapper2' />" )
			.draggable({
				drag: function() {
					startValue += 100;
					$( document ).scrollTop( startValue ).scrollLeft( startValue );
				},
				stop: function( event, ui ) {
					equal( ui.position.left, 10, "left position is correct when parent position is fixed" );
					equal( ui.position.top, 10, "top position is correct when parent position is fixed" );
					$( document ).scrollTop( 0 ).scrollLeft( 0 );
				}
			});

	TestHelpers.forceScrollableWindow();

	$( "#wrapper" ).css( "position", "fixed" );
	$( "#wrapper2" ).css( "position", "absolute" );

	element.simulate( "drag", {
		dx: 10,
		dy: 10,
		moves: 3
	});
});

$( [ "hidden", "auto", "scroll" ] ).each(function() {
	var overflow = this;

	// http://bugs.jqueryui.com/ticket/9379 - position bug in scrollable div
	// http://bugs.jqueryui.com/ticket/10147 - Wrong position in a parent with "overflow: hidden"
	test( "position in scrollable parent with overflow: " + overflow, function() {
		expect( 2 );

		$( "#qunit-fixture" ).html( "<div id='outer'><div id='inner'></div><div id='dragged'>a</div></div>" );
		$( "#inner" ).css({ position: "absolute", width: "500px", height: "500px" });
		$( "#outer" ).css({ position: "absolute", width: "300px", height: "300px" });
		$( "#dragged" ).css({ width: "10px", height: "10px" });

		var moves = 3,
			startValue = 0,
			dragDelta = 20,
			delta = 100,

			// we scroll after each drag event, so subtract 1 from number of moves for expected
			expected = delta + ( ( moves - 1 ) * dragDelta ),
			element = $( "#dragged" ).draggable({
				drag: function() {
					startValue += dragDelta;
					$( "#outer" ).scrollTop( startValue ).scrollLeft( startValue );
				},
				stop: function( event, ui ) {
					equal( ui.position.left, expected, "left position is correct when grandparent is scrolled" );
					equal( ui.position.top, expected, "top position is correct when grandparent is scrolled" );
				}
			});

		$( "#outer" ).css( "overflow", overflow );

		element.simulate( "drag", {
			dy: delta,
			dx: delta,
			moves: moves
		});
	});
});

test( "#5727: draggable from iframe", function() {
	expect( 1 );

	var iframeBody, draggable1,
		iframe = $( "<iframe />" ).appendTo( "#qunit-fixture" ),
		iframeDoc = ( iframe[ 0 ].contentWindow || iframe[ 0 ].contentDocument ).document;

	iframeDoc.write( "<!doctype html><html><body>" );
	iframeDoc.close();

	iframeBody = $( iframeDoc.body ).append( "<div style='width: 2px; height: 2px;' />" );
	draggable1 = iframeBody.find( "div" );

	draggable1.draggable();

	equal( draggable1.closest( iframeBody ).length, 1 );

	// TODO: fix draggable within an IFRAME to fire events on the element properly
	// and these TestHelpers.draggable.shouldMove relies on events for testing
	//TestHelpers.draggable.shouldMove( draggable1, "draggable from an iframe" );
});

test( "#8399: A draggable should become the active element after you are finished interacting with it, but not before.", function() {
	expect( 2 );

	var element = $( "<a href='#'>link</a>" ).appendTo( "#qunit-fixture" ).draggable();

	$( document ).one( "mousemove", function() {
		notStrictEqual( document.activeElement, element.get( 0 ), "moving a draggable anchor did not make it the active element" );
	});

	TestHelpers.draggable.move( element, 50, 50 );

	strictEqual( document.activeElement, element.get( 0 ), "finishing moving a draggable anchor made it the active element" );
});

asyncTest( "blur behavior", function() {
	expect( 3 );

	var element = $( "#draggable1" ).draggable(),
		focusElement = $( "<div tabindex='1'></div>" ).appendTo( element );

	TestHelpers.onFocus( focusElement, function() {
		strictEqual( document.activeElement, focusElement.get( 0 ), "test element is focused before mousing down on a draggable" );

		TestHelpers.draggable.move( focusElement, 1, 1 );

		// http://bugs.jqueryui.com/ticket/10527
		// Draggable: Can't select option in modal dialog (IE8)
		strictEqual( document.activeElement, focusElement.get( 0 ), "test element is focused after mousing down on itself" );

		TestHelpers.draggable.move( element, 50, 50 );

		// http://bugs.jqueryui.com/ticket/4261
		// active element should blur when mousing down on a draggable
		notStrictEqual( document.activeElement, focusElement.get( 0 ), "test element is no longer focused after mousing down on a draggable" );
		start();
	});
});

test( "ui-draggable-handle assigned to appropriate element", function( assert ) {
	expect( 5 );

	var p = $( "<p>" ).appendTo( "#qunit-fixture" ),
		element = $( "<div><p></p></div>" ).appendTo( "#qunit-fixture" ).draggable();
	assert.hasClasses( element, "ui-draggable-handle" );

	element.draggable( "option", "handle", "p" );
	assert.lacksClasses( element, "ui-draggable-handle" );
	assert.hasClasses( element.find( "p" ), "ui-draggable-handle",
		"ensure handle class name is constrained within the draggble (#10212)" );
	assert.lacksClasses( p, "ui-draggable-handle" );

	element.draggable( "destroy" );
	assert.lacksClasses( element.find( "p" ), "ui-draggable-handle" );
});

test( "ui-draggable-handle managed correctly in nested draggables", function( assert ) {
	expect( 4 );
	var parent = $( "<div><div></div></div>" ).draggable().appendTo( "#qunit-fixture" ),
		child = parent.find( "div" ).draggable();

	assert.hasClasses( parent, "ui-draggable-handle", "parent has class name on init" );
	assert.hasClasses( child, "ui-draggable-handle", "child has class name on init" );

	parent.draggable( "destroy" );
	assert.lacksClasses( parent, "ui-draggable-handle", "parent loses class name on destroy" );
	assert.hasClasses( child, "ui-draggable-handle", "child retains class name on destroy" );
});

// http://bugs.jqueryui.com/ticket/7772
// when css 'right' is set, element resizes on drag
test( "setting right/bottom css shouldn't cause resize", function() {
	expect( 4 );

	var finalOffset,
		element = $( "#draggable3" ),
		origWidth = element.width(),
		origHeight = element.height(),
		origOffset = element.offset();

	element.draggable();

	TestHelpers.draggable.move( element, -50, -50 );

	finalOffset = element.offset();
	finalOffset.left += 50;
	finalOffset.top += 50;

	closeEnough( element.width(), origWidth, 1, "element retains width" );
	closeEnough( element.height(), origHeight, 1, "element retains height" );
	closeEnough( finalOffset.top, origOffset.top, "element moves the correct vertical distance" );
	closeEnough( finalOffset.top, origOffset.top, "element moves the correct horizontal distance" );
});

})( jQuery );