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/*
* jQuery UI Popup @VERSION
*
* Copyright 2011, AUTHORS.txt (http://jqueryui.com/about)
* Dual licensed under the MIT or GPL Version 2 licenses.
* http://jquery.org/license
*
* http://docs.jquery.com/UI/Popup
*
* Depends:
* jquery.ui.core.js
* jquery.ui.widget.js
* jquery.ui.position.js
*/
(function($) {
var idIncrement = 0;
$.widget( "ui.popup", {
version: "@VERSION",
options: {
position: {
my: "left top",
at: "left bottom"
}
},
_create: function() {
if ( !this.options.trigger ) {
this.options.trigger = this.element.prev();
}
if ( !this.element.attr( "id" ) ) {
this.element.attr( "id", "ui-popup-" + idIncrement++ );
this.generatedId = true;
}
if ( !this.element.attr( "role" ) ) {
// TODO alternatives to tooltip are dialog and menu, all three aren't generic popups
this.element.attr( "role", "dialog" );
this.generatedRole = true;
}
this.options.trigger
.attr( "aria-haspopup", true )
.attr( "aria-owns", this.element.attr( "id" ) );
this.element
.addClass( "ui-popup" )
this.close();
this._bind(this.options.trigger, {
keydown: function( event ) {
// prevent space-to-open to scroll the page, only happens for anchor ui.button
if ( this.options.trigger.is( "a:ui-button" ) && event.keyCode == $.ui.keyCode.SPACE ) {
event.preventDefault();
}
// TODO handle SPACE to open popup? only when not handled by ui.button
if ( event.keyCode == $.ui.keyCode.SPACE && this.options.trigger.is( "a:not(:ui-button)" ) ) {
this.options.trigger.trigger( "click", event );
}
// translate keydown to click
// opens popup and let's tooltip hide itself
if ( event.keyCode == $.ui.keyCode.DOWN ) {
// prevent scrolling
event.preventDefault();
this.options.trigger.trigger( "click", event );
}
},
click: function( event ) {
event.preventDefault();
if (this.isOpen) {
// let it propagate to close
return;
}
var that = this;
clearTimeout( this.closeTimer );
setTimeout(function() {
that.open( event );
}, 1);
}
});
if ( !this.element.is( ":ui-menu" ) ) {
//default use case, wrap tab order in popup
this._bind({ keydown : function( event ) {
if ( event.keyCode !== $.ui.keyCode.TAB ) {
return;
}
var tabbables = $( ":tabbable", this.element ),
first = tabbables.first(),
last = tabbables.last();
if ( event.target === last[ 0 ] && !event.shiftKey ) {
first.focus( 1 );
event.preventDefault();
} else if ( event.target === first[ 0 ] && event.shiftKey ) {
last.focus( 1 );
event.preventDefault();
}
}
});
}
this._bind({
focusout: function( event ) {
var that = this;
// use a timer to allow click to clear it and letting that
// handle the closing instead of opening again
that.closeTimer = setTimeout( function() {
that.close( event );
}, 100);
},
focusin: function( event ) {
clearTimeout( this.closeTimer );
}
});
this._bind({
// TODO only triggered on element if it can receive focus
// bind to document instead?
// either element itself or a child should be focusable
keyup: function( event ) {
if ( event.keyCode == $.ui.keyCode.ESCAPE && this.element.is( ":visible" ) ) {
this.close( event );
// TODO move this to close()? would allow menu.select to call popup.close, and get focus back to trigger
this.options.trigger.focus();
}
}
});
this._bind(document, {
click: function( event ) {
if ( this.isOpen && !$(event.target).closest(".ui-popup").length ) {
this.close( event );
}
}
})
},
_destroy: function() {
this.element
.show()
.removeClass( "ui-popup" )
.removeAttr( "aria-hidden" )
.removeAttr( "aria-expanded" )
.unbind( "keypress.ui-popup");
this.options.trigger
.removeAttr( "aria-haspopup" )
.removeAttr( "aria-owns" );
if ( this.generatedId ) {
this.element.removeAttr( "id" );
}
if ( this.generatedRole ) {
this.element.removeAttr( "role" );
}
},
open: function( event ) {
var position = $.extend( {}, {
of: this.options.trigger
}, this.options.position );
this.element
.show()
.attr( "aria-hidden", false )
.attr( "aria-expanded", true )
.position( position );
if (this.element.is( ":ui-menu" )) { //popup is a menu
this.element.menu( "focus", event, this.element.children( "li" ).first() );
this.element.focus();
} else {
// set focus to the first tabbable element in the popup container
// if there are no tabbable elements, set focus on the popup itself
var tabbables = this.element.find( ":tabbable" );
this.removeTabIndex = false;
if ( !tabbables.length ) {
if ( !this.element.is(":tabbable") ) {
this.element.attr("tabindex", "0");
this.removeTabIndex = true;
}
tabbables = tabbables.add( this.element[ 0 ] );
}
tabbables.first().focus( 1 );
}
// take trigger out of tab order to allow shift-tab to skip trigger
this.options.trigger.attr( "tabindex", -1 );
this.isOpen = true;
this._trigger( "open", event );
},
close: function( event ) {
this.element
.hide()
.attr( "aria-hidden", true )
.attr( "aria-expanded", false );
this.options.trigger.attr( "tabindex" , 0 );
if ( this.removeTabIndex ) {
this.element.removeAttr( "tabindex" );
}
this.isOpen = false;
this._trigger( "close", event );
}
});
}(jQuery));
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