jquery.mobile.forms.textinput.js

/*
* jQuery Mobile Framework : "textinput" plugin for text inputs, textareas
* Copyright (c) jQuery Project
* Dual licensed under the MIT or GPL Version 2 licenses.
* http://jquery.org/license
*/

(function( $, undefined ) {

$.widget( "mobile.textinput", $.mobile.widget, {
	options: {
		theme: null,
		initSelector: "input[type='text'], input[type='search'], :jqmData(type='search'), input[type='number'], :jqmData(type='number'), input[type='password'], input[type='email'], input[type='url'], input[type='tel'], textarea, input[type='time'], input[type='date'], input[type='month'], input[type='week'], input[type='datetime'], input[type='datetime-local'], input[type='color'], input:not([type])"
	},

	_create: function() {

		var input = this.element,
			o = this.options,
			theme = o.theme,
			themeclass, focusedEl, clearbtn;

		if ( !theme ) {
			theme = $.mobile.getInheritedTheme( this.element, "c" );
		}

		themeclass = " ui-body-" + theme;

		$( "label[for='" + input.attr( "id" ) + "']" ).addClass( "ui-input-text" );

		input.addClass("ui-input-text ui-body-"+ theme );

		focusedEl = input;

		// XXX: Temporary workaround for issue 785 (Apple bug 8910589).
		//      Turn off autocorrect and autocomplete on non-iOS 5 devices
		//      since the popup they use can't be dismissed by the user. Note
		//      that we test for the presence of the feature by looking for
		//      the autocorrect property on the input element. We currently
		//      have no test for iOS 5 or newer so we're temporarily using
		//      the touchOverflow support flag for jQM 1.0. Yes, I feel dirty. - jblas
		if ( typeof input[0].autocorrect !== "undefined" && !$.support.touchOverflow ) {
			// Set the attribute instead of the property just in case there
			// is code that attempts to make modifications via HTML.
			input[0].setAttribute( "autocorrect", "off" );
			input[0].setAttribute( "autocomplete", "off" );
		}


		//"search" input widget
		if ( input.is( "[type='search'],:jqmData(type='search')" ) ) {

			focusedEl = input.wrap( "<div class='ui-input-search ui-shadow-inset ui-btn-corner-all ui-btn-shadow ui-icon-searchfield" + themeclass + "'></div>" ).parent();
			clearbtn = $( "<a href='#' class='ui-input-clear' title='clear text'>clear text</a>" )
				.tap(function( event ) {
					input.val( "" ).focus();
					input.trigger( "change" );
					clearbtn.addClass( "ui-input-clear-hidden" );
					event.preventDefault();
				})
				.appendTo( focusedEl )
				.buttonMarkup({
					icon: "delete",
					iconpos: "notext",
					corners: true,
					shadow: true
				});

			function toggleClear() {
				if ( !input.val() ) {
					clearbtn.addClass( "ui-input-clear-hidden" );
				} else {
					clearbtn.removeClass( "ui-input-clear-hidden" );
				}
			}

			toggleClear();

			input.keyup( toggleClear )
				.focus( toggleClear );

		} else {
			input.addClass( "ui-corner-all ui-shadow-inset" + themeclass );
		}

		input.focus(function() {
				focusedEl.addClass( "ui-focus" );
			})
			.blur(function(){
				focusedEl.removeClass( "ui-focus" );
			});

		// Autogrow
		if ( input.is( "textarea" ) ) {
			var extraLineHeight = 15,
				keyupTimeoutBuffer = 100,
				keyup = function() {
					var scrollHeight = input[ 0 ].scrollHeight,
						clientHeight = input[ 0 ].clientHeight;

					if ( clientHeight < scrollHeight ) {
						input.css({
							height: (scrollHeight + extraLineHeight)
						});
					}
				},
				keyupTimeout;

			input.keyup(function() {
				clearTimeout( keyupTimeout );
				keyupTimeout = setTimeout( keyup, keyupTimeoutBuffer );
			});

			// Issue 509: the browser is not giving scrollHeight properly until after the document
			// is ready.
			if ($.trim(input.text())) {
				$(keyup);
			}
		}
	},

	disable: function(){
		( this.element.attr( "disabled", true ).is( "[type='search'],:jqmData(type='search')" ) ?
			this.element.parent() : this.element ).addClass( "ui-disabled" );
	},

	enable: function(){
		( this.element.attr( "disabled", false).is( "[type='search'],:jqmData(type='search')" ) ?
			this.element.parent() : this.element ).removeClass( "ui-disabled" );
	}
});

//auto self-init widgets
$( document ).bind( "pagecreate create", function( e ){
	$.mobile.textinput.prototype.enhanceWithin( e.target );
});

})( jQuery );