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/*
* jQuery UI popup utility
*/
(function($) {
var idIncrement = 0;
$.widget( "ui.popup", {
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", "tooltip" );
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
// TODO do this only for a:ui-button?
if (event.keyCode == $.ui.keyCode.SPACE) {
event.preventDefault()
}
// TODO handle keydown to open popup?
//if (event.keyCode == $.ui.keyCode.SPACE) { .. }
},
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);
}
});
this._bind(this.element, {
blur: 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);
}
});
this._bind({
// TODO only triggerd on element if it can receive focus
// bind to document instead?
keyup: function( event ) {
if (event.keyCode == $.ui.keyCode.ESCAPE && this.element.is( ":visible" )) {
this.close( event );
this.options.trigger.focus();
}
}
});
this._bind(document, {
click: function( event ) {
if (this.isOpen && !$(event.target).closest(".ui-popup").length) {
this.close( event );
}
}
})
},
_destroy: function() {
this.element
.show()
.removeClass( "ui-popup" )
.removeAttr( "aria-hidden" )
.removeAttr( "aria-expanded" );
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 )
.focus();
if (this.element.is(":ui-menu")) {
this.element.menu("focus", event, this.element.children( "li" ).first() );
}
// 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);
this.isOpen = false;
this._trigger( "close", event );
}
});
}(jQuery));
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