jquery-ui/ui/jquery.ui.accordion.js

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/*!
* jQuery UI Accordion @VERSION
*
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* Copyright 2012, AUTHORS.txt (http://jqueryui.com/about)
* Dual licensed under the MIT or GPL Version 2 licenses.
* http://jquery.org/license
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*
* http://docs.jquery.com/UI/Accordion
*
* Depends:
* jquery.ui.core.js
* jquery.ui.widget.js
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*/
(function( $, undefined ) {
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$.widget( "ui.accordion", {
options: {
active: 0,
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animated: "slide",
autoHeight: true,
clearStyle: false,
collapsible: false,
event: "click",
fillSpace: false,
header: "> li > :first-child,> :not(li):even",
icons: {
header: "ui-icon-triangle-1-e",
headerSelected: "ui-icon-triangle-1-s"
},
navigation: false,
navigationFilter: function() {
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return this.href.toLowerCase() === location.href.toLowerCase();
}
},
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_create: function() {
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var self = this,
options = self.options;
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self.running = 0;
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self.element
.addClass( "ui-accordion ui-widget ui-helper-reset" )
// in lack of child-selectors in CSS
// we need to mark top-LIs in a UL-accordion for some IE-fix
.children( "li" )
.addClass( "ui-accordion-li-fix" );
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self.headers = self.element.find( options.header )
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.addClass( "ui-accordion-header ui-helper-reset ui-state-default ui-corner-all" )
.bind( "mouseenter.accordion", function() {
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if ( options.disabled ) {
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return;
}
$( this ).addClass( "ui-state-hover" );
})
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.bind( "mouseleave.accordion", function() {
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if ( options.disabled ) {
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return;
}
$( this ).removeClass( "ui-state-hover" );
})
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.bind( "focus.accordion", function() {
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if ( options.disabled ) {
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return;
}
$( this ).addClass( "ui-state-focus" );
})
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.bind( "blur.accordion", function() {
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if ( options.disabled ) {
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return;
}
$( this ).removeClass( "ui-state-focus" );
});
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self.headers.next()
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.addClass( "ui-accordion-content ui-helper-reset ui-widget-content ui-corner-bottom" );
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if ( options.navigation ) {
var current = self.element.find( "a" ).filter( options.navigationFilter ).eq( 0 );
if ( current.length ) {
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var header = current.closest( ".ui-accordion-header" );
if ( header.length ) {
// anchor within header
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self.active = header;
} else {
// anchor within content
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self.active = current.closest( ".ui-accordion-content" ).prev();
}
}
}
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self.active = self._findActive( self.active || options.active )
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.addClass( "ui-state-default ui-state-active" )
.toggleClass( "ui-corner-all" )
.toggleClass( "ui-corner-top" );
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self.active.next().addClass( "ui-accordion-content-active" );
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self._createIcons();
self.resize();
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// ARIA
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self.element.attr( "role", "tablist" );
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self.headers
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.attr( "role", "tab" )
.bind( "keydown.accordion", function( event ) {
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return self._keydown( event );
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})
.next()
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.attr( "role", "tabpanel" );
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self.headers
.not( self.active || "" )
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.attr({
"aria-expanded": "false",
"aria-selected": "false",
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tabIndex: -1
})
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.next()
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.hide();
// make sure at least one header is in the tab order
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if ( !self.active.length ) {
self.headers.eq( 0 ).attr( "tabIndex", 0 );
} else {
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self.active
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.attr({
"aria-expanded": "true",
"aria-selected": "true",
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tabIndex: 0
});
}
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// only need links in tab order for Safari
if ( !$.browser.safari ) {
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self.headers.find( "a" ).attr( "tabIndex", -1 );
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}
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if ( options.event ) {
self.headers.bind( options.event.split(" ").join(".accordion ") + ".accordion", function(event) {
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self._clickHandler.call( self, event, this );
event.preventDefault();
});
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}
},
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_createIcons: function() {
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var options = this.options;
if ( options.icons ) {
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$( "<span></span>" )
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.addClass( "ui-icon " + options.icons.header )
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.prependTo( this.headers );
this.active.children( ".ui-icon" )
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.toggleClass(options.icons.header)
.toggleClass(options.icons.headerSelected);
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this.element.addClass( "ui-accordion-icons" );
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}
},
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_destroyIcons: function() {
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this.headers.children( ".ui-icon" ).remove();
this.element.removeClass( "ui-accordion-icons" );
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},
destroy: function() {
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var options = this.options;
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this.element
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.removeClass( "ui-accordion ui-widget ui-helper-reset" )
.removeAttr( "role" );
this.headers
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.unbind( ".accordion" )
.removeClass( "ui-accordion-header ui-accordion-disabled ui-helper-reset ui-state-default ui-corner-all ui-state-active ui-state-disabled ui-corner-top" )
.removeAttr( "role" )
.removeAttr( "aria-expanded" )
.removeAttr( "aria-selected" )
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.removeAttr( "tabIndex" );
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this.headers.find( "a" ).removeAttr( "tabIndex" );
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this._destroyIcons();
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var contents = this.headers.next()
.css( "display", "" )
.removeAttr( "role" )
.removeClass( "ui-helper-reset ui-widget-content ui-corner-bottom ui-accordion-content ui-accordion-content-active ui-accordion-disabled ui-state-disabled" );
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if ( options.autoHeight || options.fillHeight ) {
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contents.css( "height", "" );
}
return $.Widget.prototype.destroy.call( this );
},
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_setOption: function( key, value ) {
$.Widget.prototype._setOption.apply( this, arguments );
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if ( key == "active" ) {
this.activate( value );
}
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if ( key == "icons" ) {
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this._destroyIcons();
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if ( value ) {
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this._createIcons();
}
}
// #5332 - opacity doesn't cascade to positioned elements in IE
// so we need to add the disabled class to the headers and panels
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if ( key == "disabled" ) {
this.headers.add(this.headers.next())
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[ value ? "addClass" : "removeClass" ](
"ui-accordion-disabled ui-state-disabled" );
}
},
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_keydown: function( event ) {
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if ( this.options.disabled || event.altKey || event.ctrlKey ) {
return;
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}
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var keyCode = $.ui.keyCode,
length = this.headers.length,
currentIndex = this.headers.index( event.target ),
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toFocus = false;
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switch ( event.keyCode ) {
case keyCode.RIGHT:
case keyCode.DOWN:
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toFocus = this.headers[ ( currentIndex + 1 ) % length ];
break;
case keyCode.LEFT:
case keyCode.UP:
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toFocus = this.headers[ ( currentIndex - 1 + length ) % length ];
break;
case keyCode.SPACE:
case keyCode.ENTER:
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this._clickHandler( { target: event.target }, event.target );
event.preventDefault();
}
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if ( toFocus ) {
$( event.target ).attr( "tabIndex", -1 );
$( toFocus ).attr( "tabIndex", 0 );
toFocus.focus();
return false;
}
return true;
},
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resize: function() {
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var options = this.options,
maxHeight;
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if ( options.fillSpace ) {
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if ( $.browser.msie ) {
var defOverflow = this.element.parent().css( "overflow" );
this.element.parent().css( "overflow", "hidden");
}
maxHeight = this.element.parent().height();
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if ($.browser.msie) {
this.element.parent().css( "overflow", defOverflow );
}
this.headers.each(function() {
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maxHeight -= $( this ).outerHeight( true );
});
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this.headers.next()
.each(function() {
$( this ).height( Math.max( 0, maxHeight -
$( this ).innerHeight() + $( this ).height() ) );
})
.css( "overflow", "auto" );
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} else if ( options.autoHeight ) {
maxHeight = 0;
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this.headers.next()
.each(function() {
maxHeight = Math.max( maxHeight, $( this ).height( "" ).height() );
})
.height( maxHeight );
}
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return this;
},
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activate: function( index ) {
// TODO this gets called on init, changing the option without an explicit call for that
this.options.active = index;
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// call clickHandler with custom event
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var active = this._findActive( index )[ 0 ];
this._clickHandler( { target: active }, active );
return this;
},
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_findActive: function( selector ) {
return selector
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? typeof selector === "number"
? this.headers.filter( ":eq(" + selector + ")" )
: this.headers.not( this.headers.not( selector ) )
: selector === false
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? $( [] )
: this.headers.filter( ":eq(0)" );
},
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// TODO isn't event.target enough? why the separate target argument?
_clickHandler: function( event, target ) {
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var options = this.options;
if ( options.disabled ) {
return;
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}
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// called only when using activate(false) to close all parts programmatically
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if ( !event.target ) {
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if ( !options.collapsible ) {
return;
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}
this.active
.removeClass( "ui-state-active ui-corner-top" )
.addClass( "ui-state-default ui-corner-all" )
.children( ".ui-icon" )
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.removeClass( options.icons.headerSelected )
.addClass( options.icons.header );
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this.active.next().addClass( "ui-accordion-content-active" );
var toHide = this.active.next(),
data = {
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options: options,
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newHeader: $( [] ),
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oldHeader: options.active,
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newContent: $( [] ),
oldContent: toHide
},
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toShow = ( this.active = $( [] ) );
this._toggle( toShow, toHide, data );
return;
}
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// get the click target
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var clicked = $( event.currentTarget || target ),
clickedIsActive = clicked[0] === this.active[0];
// TODO the option is changed, is that correct?
// TODO if it is correct, shouldn't that happen after determining that the click is valid?
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options.active = options.collapsible && clickedIsActive ?
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false :
this.headers.index( clicked );
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// if animations are still active, or the active header is the target, ignore click
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if ( this.running || ( !options.collapsible && clickedIsActive ) ) {
return;
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}
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// find elements to show and hide
var active = this.active,
toShow = clicked.next(),
toHide = this.active.next(),
data = {
options: options,
newHeader: clickedIsActive && options.collapsible ? $([]) : clicked,
oldHeader: this.active,
newContent: clickedIsActive && options.collapsible ? $([]) : toShow,
oldContent: toHide
},
down = this.headers.index( this.active[0] ) > this.headers.index( clicked[0] );
// when the call to ._toggle() comes after the class changes
// it causes a very odd bug in IE 8 (see #6720)
this.active = clickedIsActive ? $([]) : clicked;
this._toggle( toShow, toHide, data, clickedIsActive, down );
// switch classes
active
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.removeClass( "ui-state-active ui-corner-top" )
.addClass( "ui-state-default ui-corner-all" )
.children( ".ui-icon" )
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.removeClass( options.icons.headerSelected )
.addClass( options.icons.header );
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if ( !clickedIsActive ) {
clicked
.removeClass( "ui-state-default ui-corner-all" )
.addClass( "ui-state-active ui-corner-top" )
.children( ".ui-icon" )
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.removeClass( options.icons.header )
.addClass( options.icons.headerSelected );
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clicked
.next()
.addClass( "ui-accordion-content-active" );
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}
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return;
},
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_toggle: function( toShow, toHide, data, clickedIsActive, down ) {
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var self = this,
options = self.options;
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self.toShow = toShow;
self.toHide = toHide;
self.data = data;
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var complete = function() {
if ( !self ) {
return;
}
return self._completed.apply( self, arguments );
};
// trigger changestart event
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self._trigger( "changestart", null, self.data );
// count elements to animate
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self.running = toHide.size() === 0 ? toShow.size() : toHide.size();
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if ( options.animated ) {
var animOptions = {};
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if ( options.collapsible && clickedIsActive ) {
animOptions = {
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toShow: $( [] ),
toHide: toHide,
complete: complete,
down: down,
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autoHeight: options.autoHeight || options.fillSpace
};
} else {
animOptions = {
toShow: toShow,
toHide: toHide,
complete: complete,
down: down,
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autoHeight: options.autoHeight || options.fillSpace
};
}
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if ( !options.proxied ) {
options.proxied = options.animated;
}
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if ( !options.proxiedDuration ) {
options.proxiedDuration = options.duration;
}
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options.animated = $.isFunction( options.proxied ) ?
options.proxied( animOptions ) :
options.proxied;
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options.duration = $.isFunction( options.proxiedDuration ) ?
options.proxiedDuration( animOptions ) :
options.proxiedDuration;
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var animations = $.ui.accordion.animations,
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duration = options.duration,
easing = options.animated;
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if ( easing && !animations[ easing ] && !$.easing[ easing ] ) {
easing = "slide";
}
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if ( !animations[ easing ] ) {
animations[ easing ] = function( options ) {
this.slide( options, {
easing: easing,
duration: duration || 700
});
};
}
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animations[ easing ]( animOptions );
} else {
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if ( options.collapsible && clickedIsActive ) {
toShow.toggle();
} else {
toHide.hide();
toShow.show();
}
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complete( true );
}
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// TODO assert that the blur and focus triggers are really necessary, remove otherwise
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toHide.prev()
.attr({
"aria-expanded": "false",
"aria-selected": "false",
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tabIndex: -1
})
.blur();
toShow.prev()
.attr({
"aria-expanded": "true",
"aria-selected": "true",
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tabIndex: 0
})
.focus();
},
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_completed: function( cancel ) {
this.running = cancel ? 0 : --this.running;
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if ( this.running ) {
return;
}
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if ( this.options.clearStyle ) {
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this.toShow.add( this.toHide ).css({
height: "",
overflow: ""
});
}
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// other classes are removed before the animation; this one needs to stay until completed
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this.toHide.removeClass( "ui-accordion-content-active" );
// Work around for rendering bug in IE (#5421)
if ( this.toHide.length ) {
this.toHide.parent()[0].className = this.toHide.parent()[0].className;
}
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this._trigger( "change", null, this.data );
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}
});
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$.extend( $.ui.accordion, {
version: "@VERSION",
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animations: {
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slide: function( options, additions ) {
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options = $.extend({
easing: "swing",
duration: 300
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}, options, additions );
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if ( !options.toHide.size() ) {
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options.toShow.animate({
height: "show",
paddingTop: "show",
paddingBottom: "show"
}, options );
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return;
}
if ( !options.toShow.size() ) {
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options.toHide.animate({
height: "hide",
paddingTop: "hide",
paddingBottom: "hide"
}, options );
return;
}
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var overflow = options.toShow.css( "overflow" ),
percentDone = 0,
showProps = {},
hideProps = {},
fxAttrs = [ "height", "paddingTop", "paddingBottom" ],
originalWidth;
// fix width before calculating height of hidden element
var s = options.toShow;
originalWidth = s[0].style.width;
s.width( s.parent().width()
- parseFloat( s.css( "paddingLeft" ) )
- parseFloat( s.css( "paddingRight" ) )
- ( parseFloat( s.css( "borderLeftWidth" ) ) || 0 )
- ( parseFloat( s.css( "borderRightWidth" ) ) || 0 ) );
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$.each( fxAttrs, function( i, prop ) {
hideProps[ prop ] = "hide";
var parts = ( "" + $.css( options.toShow[0], prop ) ).match( /^([\d+-.]+)(.*)$/ );
showProps[ prop ] = {
value: parts[ 1 ],
unit: parts[ 2 ] || "px"
};
});
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options.toShow.css({ height: 0, overflow: "hidden" }).show();
options.toHide
.filter( ":hidden" )
.each( options.complete )
.end()
.filter( ":visible" )
.animate( hideProps, {
step: function( now, settings ) {
// only calculate the percent when animating height
// IE gets very inconsistent results when animating elements
// with small values, which is common for padding
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if ( settings.prop == "height" ) {
percentDone = ( settings.end - settings.start === 0 ) ? 0 :
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( settings.now - settings.start ) / ( settings.end - settings.start );
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}
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options.toShow[ 0 ].style[ settings.prop ] =
( percentDone * showProps[ settings.prop ].value )
+ showProps[ settings.prop ].unit;
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},
duration: options.duration,
easing: options.easing,
complete: function() {
if ( !options.autoHeight ) {
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options.toShow.css( "height", "" );
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}
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options.toShow.css({
width: originalWidth,
overflow: overflow
});
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options.complete();
}
});
},
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bounceslide: function( options ) {
this.slide( options, {
easing: options.down ? "easeOutBounce" : "swing",
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duration: options.down ? 1000 : 200
});
}
}
});
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})( jQuery );