mirror of
https://github.com/jquery/jquery-ui.git
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590 lines
15 KiB
JavaScript
590 lines
15 KiB
JavaScript
/*!
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* jQuery UI Accordion @VERSION
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* http://jqueryui.com
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*
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* Copyright jQuery Foundation and other contributors
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* Released under the MIT license.
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* http://jquery.org/license
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*/
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//>>label: Accordion
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//>>group: Widgets
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//>>description: Displays collapsible content panels for presenting information in a limited amount of space.
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//>>docs: http://api.jqueryui.com/accordion/
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//>>demos: http://jqueryui.com/accordion/
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//>>css.structure: ../themes/base/core.css
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//>>css.structure: ../themes/base/accordion.css
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//>>css.theme: ../themes/base/theme.css
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( function( factory ) {
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if ( typeof define === "function" && define.amd ) {
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// AMD. Register as an anonymous module.
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define( [
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"jquery",
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"./version",
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"./core",
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"./keycode",
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"./widget"
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], factory );
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} else {
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// Browser globals
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factory( jQuery );
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}
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}( function( $ ) {
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return $.widget( "ui.accordion", {
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version: "@VERSION",
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options: {
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active: 0,
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animate: {},
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classes: {
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"ui-accordion-header": "ui-corner-top",
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"ui-accordion-header-collapsed": "ui-corner-all",
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"ui-accordion-content": "ui-corner-bottom"
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},
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collapsible: false,
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event: "click",
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header: "> li > :first-child, > :not(li):even",
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heightStyle: "auto",
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icons: {
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activeHeader: "ui-icon-triangle-1-s",
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header: "ui-icon-triangle-1-e"
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},
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// callbacks
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activate: null,
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beforeActivate: null
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},
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hideProps: {
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borderTopWidth: "hide",
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borderBottomWidth: "hide",
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paddingTop: "hide",
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paddingBottom: "hide",
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height: "hide"
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},
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showProps: {
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borderTopWidth: "show",
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borderBottomWidth: "show",
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paddingTop: "show",
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paddingBottom: "show",
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height: "show"
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},
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_create: function() {
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var options = this.options;
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this.prevShow = this.prevHide = $();
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this._addClass( "ui-accordion", "ui-widget ui-helper-reset" );
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this.element.attr( "role", "tablist" );
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// don't allow collapsible: false and active: false / null
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if ( !options.collapsible && ( options.active === false || options.active == null ) ) {
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options.active = 0;
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}
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this._processPanels();
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// handle negative values
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if ( options.active < 0 ) {
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options.active += this.headers.length;
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}
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this._refresh();
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},
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_getCreateEventData: function() {
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return {
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header: this.active,
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panel: !this.active.length ? $() : this.active.next()
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};
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},
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_createIcons: function() {
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var icon, children,
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icons = this.options.icons;
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if ( icons ) {
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icon = $( "<span>" );
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this._addClass( icon, "ui-accordion-header-icon", "ui-icon " + icons.header );
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icon.prependTo( this.headers );
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children = this.active.children( ".ui-accordion-header-icon" );
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this._removeClass( children, icons.header )
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._addClass( children, null, icons.activeHeader )
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._addClass( this.headers, "ui-accordion-icons" );
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}
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},
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_destroyIcons: function() {
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this._removeClass( this.headers, "ui-accordion-icons" );
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this.headers.children( ".ui-accordion-header-icon" ).remove();
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},
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_destroy: function() {
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var contents;
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// clean up main element
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this.element.removeAttr( "role" );
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// clean up headers
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this.headers
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.removeAttr( "role aria-expanded aria-selected aria-controls tabIndex" )
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.removeUniqueId();
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this._destroyIcons();
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// clean up content panels
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contents = this.headers.next()
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.css( "display", "" )
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.removeAttr( "role aria-hidden aria-labelledby" )
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.removeUniqueId();
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if ( this.options.heightStyle !== "content" ) {
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contents.css( "height", "" );
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}
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},
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_setOption: function( key, value ) {
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if ( key === "active" ) {
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// _activate() will handle invalid values and update this.options
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this._activate( value );
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return;
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}
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if ( key === "event" ) {
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if ( this.options.event ) {
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this._off( this.headers, this.options.event );
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}
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this._setupEvents( value );
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}
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this._super( key, value );
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// setting collapsible: false while collapsed; open first panel
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if ( key === "collapsible" && !value && this.options.active === false ) {
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this._activate( 0 );
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}
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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();
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}
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}
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// Support: IE8 Only
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// #5332 / #6059 - opacity doesn't cascade to positioned elements in IE
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// so we need to add the disabled class to the headers and panels
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if ( key === "disabled" ) {
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this.element.attr( "aria-disabled", value );
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this._toggleClass( null, "ui-state-disabled", !!value );
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this._toggleClass( this.headers.add( this.headers.next() ), null, "ui-state-disabled",
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!!value );
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}
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},
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_keydown: function( event ) {
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if ( event.altKey || event.ctrlKey ) {
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return;
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}
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var keyCode = $.ui.keyCode,
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length = this.headers.length,
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currentIndex = this.headers.index( event.target ),
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toFocus = false;
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switch ( event.keyCode ) {
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case keyCode.RIGHT:
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case keyCode.DOWN:
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toFocus = this.headers[ ( currentIndex + 1 ) % length ];
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break;
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case keyCode.LEFT:
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case keyCode.UP:
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toFocus = this.headers[ ( currentIndex - 1 + length ) % length ];
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break;
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case keyCode.SPACE:
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case keyCode.ENTER:
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this._eventHandler( event );
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break;
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case keyCode.HOME:
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toFocus = this.headers[ 0 ];
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break;
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case keyCode.END:
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toFocus = this.headers[ length - 1 ];
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break;
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}
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if ( toFocus ) {
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$( event.target ).attr( "tabIndex", -1 );
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$( toFocus ).attr( "tabIndex", 0 );
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$( toFocus ).trigger( "focus" );
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event.preventDefault();
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}
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},
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_panelKeyDown: function( event ) {
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if ( event.keyCode === $.ui.keyCode.UP && event.ctrlKey ) {
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$( event.currentTarget ).prev().trigger( "focus" );
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}
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},
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refresh: function() {
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var options = this.options;
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this._processPanels();
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// was collapsed or no panel
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if ( ( options.active === false && options.collapsible === true ) || !this.headers.length ) {
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options.active = false;
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this.active = $();
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// active false only when collapsible is true
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} else if ( options.active === false ) {
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this._activate( 0 );
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// was active, but active panel is gone
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} else if ( this.active.length && !$.contains( this.element[ 0 ], this.active[ 0 ] ) ) {
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// all remaining panel are disabled
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if ( this.headers.length === this.headers.find( ".ui-state-disabled" ).length ) {
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options.active = false;
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this.active = $();
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// activate previous panel
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} else {
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this._activate( Math.max( 0, options.active - 1 ) );
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}
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// was active, active panel still exists
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} else {
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// make sure active index is correct
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options.active = this.headers.index( this.active );
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}
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this._destroyIcons();
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this._refresh();
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},
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_processPanels: function() {
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var prevHeaders = this.headers,
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prevPanels = this.panels;
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this.headers = this.element.find( this.options.header );
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this._addClass( this.headers, "ui-accordion-header ui-accordion-header-collapsed",
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"ui-state-default" );
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this.panels = this.headers.next().filter( ":not(.ui-accordion-content-active)" ).hide();
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this._addClass( this.panels, "ui-accordion-content", "ui-helper-reset ui-widget-content" );
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// Avoid memory leaks (#10056)
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if ( prevPanels ) {
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this._off( prevHeaders.not( this.headers ) );
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this._off( prevPanels.not( this.panels ) );
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}
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},
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_refresh: function() {
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var maxHeight,
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options = this.options,
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heightStyle = options.heightStyle,
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parent = this.element.parent();
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this.active = this._findActive( options.active );
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this._addClass( this.active, "ui-accordion-header-active", "ui-state-active" )
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._removeClass( this.active, "ui-accordion-header-collapsed" );
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this._addClass( this.active.next(), "ui-accordion-content-active" );
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this.active.next().show();
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this.headers
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.attr( "role", "tab" )
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.each( function() {
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var header = $( this ),
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headerId = header.uniqueId().attr( "id" ),
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panel = header.next(),
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panelId = panel.uniqueId().attr( "id" );
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header.attr( "aria-controls", panelId );
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panel.attr( "aria-labelledby", headerId );
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} )
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.next()
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.attr( "role", "tabpanel" );
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this.headers
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.not( this.active )
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.attr( {
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"aria-selected": "false",
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"aria-expanded": "false",
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tabIndex: -1
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} )
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.next()
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.attr( {
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"aria-hidden": "true"
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} )
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.hide();
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// make sure at least one header is in the tab order
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if ( !this.active.length ) {
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this.headers.eq( 0 ).attr( "tabIndex", 0 );
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} else {
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this.active.attr( {
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"aria-selected": "true",
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"aria-expanded": "true",
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tabIndex: 0
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} )
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.next()
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.attr( {
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"aria-hidden": "false"
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} );
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}
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this._createIcons();
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this._setupEvents( options.event );
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if ( heightStyle === "fill" ) {
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maxHeight = parent.height();
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this.element.siblings( ":visible" ).each( function() {
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var elem = $( this ),
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position = elem.css( "position" );
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if ( position === "absolute" || position === "fixed" ) {
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return;
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}
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maxHeight -= elem.outerHeight( true );
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} );
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this.headers.each( function() {
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maxHeight -= $( this ).outerHeight( true );
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} );
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this.headers.next()
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.each( function() {
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$( this ).height( Math.max( 0, maxHeight -
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$( this ).innerHeight() + $( this ).height() ) );
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} )
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.css( "overflow", "auto" );
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} else if ( heightStyle === "auto" ) {
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maxHeight = 0;
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this.headers.next()
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.each( function() {
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maxHeight = Math.max( maxHeight, $( this ).css( "height", "" ).height() );
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} )
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.height( maxHeight );
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}
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},
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_activate: function( index ) {
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var active = this._findActive( index )[ 0 ];
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// trying to activate the already active panel
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if ( active === this.active[ 0 ] ) {
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return;
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}
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// trying to collapse, simulate a click on the currently active header
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active = active || this.active[ 0 ];
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this._eventHandler( {
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target: active,
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currentTarget: active,
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preventDefault: $.noop
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} );
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},
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_findActive: function( selector ) {
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return typeof selector === "number" ? this.headers.eq( selector ) : $();
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},
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_setupEvents: function( event ) {
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var events = {
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keydown: "_keydown"
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};
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if ( event ) {
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$.each( event.split( " " ), function( index, eventName ) {
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events[ eventName ] = "_eventHandler";
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} );
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}
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this._off( this.headers.add( this.headers.next() ) );
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this._on( this.headers, events );
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this._on( this.headers.next(), { keydown: "_panelKeyDown" } );
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this._hoverable( this.headers );
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this._focusable( this.headers );
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},
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_eventHandler: function( event ) {
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var activeChildren, clickedChildren,
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options = this.options,
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active = this.active,
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clicked = $( event.currentTarget ),
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clickedIsActive = clicked[ 0 ] === active[ 0 ],
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collapsing = clickedIsActive && options.collapsible,
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toShow = collapsing ? $() : clicked.next(),
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toHide = active.next(),
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eventData = {
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oldHeader: active,
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oldPanel: toHide,
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newHeader: collapsing ? $() : clicked,
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newPanel: toShow
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};
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event.preventDefault();
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if (
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// click on active header, but not collapsible
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( clickedIsActive && !options.collapsible ) ||
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// allow canceling activation
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( this._trigger( "beforeActivate", event, eventData ) === false ) ) {
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return;
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}
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options.active = collapsing ? false : this.headers.index( clicked );
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// when the call to ._toggle() comes after the class changes
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// it causes a very odd bug in IE 8 (see #6720)
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this.active = clickedIsActive ? $() : clicked;
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this._toggle( eventData );
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// switch classes
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// corner classes on the previously active header stay after the animation
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this._removeClass( active, "ui-accordion-header-active", "ui-state-active" );
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if ( options.icons ) {
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activeChildren = active.children( ".ui-accordion-header-icon" );
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this._removeClass( activeChildren, null, options.icons.activeHeader )
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._addClass( activeChildren, null, options.icons.header );
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}
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if ( !clickedIsActive ) {
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this._removeClass( clicked, "ui-accordion-header-collapsed" )
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._addClass( clicked, "ui-accordion-header-active", "ui-state-active" );
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if ( options.icons ) {
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clickedChildren = clicked.children( ".ui-accordion-header-icon" );
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this._removeClass( clickedChildren, null, options.icons.header )
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._addClass( clickedChildren, null, options.icons.activeHeader );
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}
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this._addClass( clicked.next(), "ui-accordion-content-active" );
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}
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},
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_toggle: function( data ) {
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var toShow = data.newPanel,
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toHide = this.prevShow.length ? this.prevShow : data.oldPanel;
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// handle activating a panel during the animation for another activation
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this.prevShow.add( this.prevHide ).stop( true, true );
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this.prevShow = toShow;
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this.prevHide = toHide;
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if ( this.options.animate ) {
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this._animate( toShow, toHide, data );
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} else {
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toHide.hide();
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toShow.show();
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this._toggleComplete( data );
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}
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toHide.attr( {
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"aria-hidden": "true"
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} );
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toHide.prev().attr( {
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"aria-selected": "false",
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"aria-expanded": "false"
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} );
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// if we're switching panels, remove the old header from the tab order
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// if we're opening from collapsed state, remove the previous header from the tab order
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// if we're collapsing, then keep the collapsing header in the tab order
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if ( toShow.length && toHide.length ) {
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toHide.prev().attr( {
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"tabIndex": -1,
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"aria-expanded": "false"
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} );
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} else if ( toShow.length ) {
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this.headers.filter( function() {
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return parseInt( $( this ).attr( "tabIndex" ), 10 ) === 0;
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} )
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.attr( "tabIndex", -1 );
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}
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toShow
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.attr( "aria-hidden", "false" )
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.prev()
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.attr( {
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"aria-selected": "true",
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"aria-expanded": "true",
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tabIndex: 0
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} );
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},
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_animate: function( toShow, toHide, data ) {
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var total, easing, duration,
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that = this,
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adjust = 0,
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boxSizing = toShow.css( "box-sizing" ),
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down = toShow.length &&
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( !toHide.length || ( toShow.index() < toHide.index() ) ),
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animate = this.options.animate || {},
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options = down && animate.down || animate,
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complete = function() {
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that._toggleComplete( data );
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};
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if ( typeof options === "number" ) {
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duration = options;
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}
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if ( typeof options === "string" ) {
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easing = options;
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}
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// fall back from options to animation in case of partial down settings
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easing = easing || options.easing || animate.easing;
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duration = duration || options.duration || animate.duration;
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if ( !toHide.length ) {
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return toShow.animate( this.showProps, duration, easing, complete );
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}
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if ( !toShow.length ) {
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return toHide.animate( this.hideProps, duration, easing, complete );
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}
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total = toShow.show().outerHeight();
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toHide.animate( this.hideProps, {
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duration: duration,
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easing: easing,
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step: function( now, fx ) {
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fx.now = Math.round( now );
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}
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} );
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toShow
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.hide()
|
|
.animate( this.showProps, {
|
|
duration: duration,
|
|
easing: easing,
|
|
complete: complete,
|
|
step: function( now, fx ) {
|
|
fx.now = Math.round( now );
|
|
if ( fx.prop !== "height" ) {
|
|
if ( boxSizing === "content-box" ) {
|
|
adjust += fx.now;
|
|
}
|
|
} else if ( that.options.heightStyle !== "content" ) {
|
|
fx.now = Math.round( total - toHide.outerHeight() - adjust );
|
|
adjust = 0;
|
|
}
|
|
}
|
|
} );
|
|
},
|
|
|
|
_toggleComplete: function( data ) {
|
|
var toHide = data.oldPanel,
|
|
prev = toHide.prev();
|
|
|
|
this._removeClass( toHide, "ui-accordion-content-active" );
|
|
this._removeClass( prev, "ui-accordion-header-active" )
|
|
._addClass( prev, "ui-accordion-header-collapsed" );
|
|
|
|
// Work around for rendering bug in IE (#5421)
|
|
if ( toHide.length ) {
|
|
toHide.parent()[ 0 ].className = toHide.parent()[ 0 ].className;
|
|
}
|
|
this._trigger( "activate", null, data );
|
|
}
|
|
} );
|
|
|
|
} ) );
|