/
dojo.formalize.js
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/
dojo.formalize.js
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//
// Note: This file depends on the Dojo library.
//
// Module pattern:
// http://yuiblog.com/blog/2007/06/12/module-pattern/
var FORMALIZE = (function(window, document, undefined) {
// Private constants.
var PLACEHOLDER_SUPPORTED = 'placeholder' in document.createElement('input');
var AUTOFOCUS_SUPPORTED = 'autofocus' in document.createElement('input');
var WEBKIT = 'webkitAppearance' in document.createElement('select').style;
var IE6 = parseInt(dojo.isIE, 10) === 6;
var IE7 = parseInt(dojo.isIE, 10) === 7;
// Expose innards of FORMALIZE.
return {
// FORMALIZE.go
go: function() {
for (var i in FORMALIZE.init) {
FORMALIZE.init[i]();
}
},
// FORMALIZE.init
init: {
// FORMALIZE.init.detect_webkit
detect_webkit: function() {
if (!WEBKIT) {
return;
}
// Tweaks for Safari + Chrome.
dojo.query('html').addClass('is_webkit');
},
// FORMALIZE.init.full_input_size
full_input_size: function() {
if (!IE7 || !dojo.query('textarea, input.input_full').length) {
return;
}
// This fixes width: 100% on <textarea> and class="input_full".
// It ensures that form elements don't go wider than container.
dojo.query('textarea, input.input_full').forEach(function(el) {
var new_el = el.cloneNode(false);
var span = document.createElement('span');
span.className = 'input_full_wrap';
span.appendChild(new_el);
el.parentNode.replaceChild(span, el);
});
},
// FORMALIZE.init.ie6_skin_inputs
ie6_skin_inputs: function() {
// Test for Internet Explorer 6.
if (!IE6 || !dojo.query('input, select, textarea').length) {
// Exit if the browser is not IE6,
// or if no form elements exist.
return;
}
// For <input type="submit" />, etc.
var button_regex = /button|submit|reset/;
// For <input type="text" />, etc.
var type_regex = /date|datetime|datetime-local|email|month|number|password|range|search|tel|text|time|url|week/;
dojo.query('input').forEach(function(el) {
// Is it a button?
if (el.getAttribute('type').match(button_regex)) {
dojo.addClass(el, 'ie6_button');
/* Is it disabled? */
if (el.disabled) {
dojo.addClass(el, 'ie6_button_disabled');
}
}
// Or is it a textual input?
else if (el.getAttribute('type').match(type_regex)) {
dojo.addClass(el, 'ie6_input');
/* Is it disabled? */
if (el.disabled) {
dojo.addClass(el, 'ie6_input_disabled');
}
}
});
dojo.query('textarea, select').forEach(function(el) {
/* Is it disabled? */
if (el.disabled) {
dojo.addClass(el, 'ie6_input_disabled');
}
});
},
// FORMALIZE.init.autofocus
autofocus: function() {
if (AUTOFOCUS_SUPPORTED || !dojo.query('[autofocus]').length) {
return;
}
dojo.query('[autofocus]')[0].focus();
},
// FORMALIZE.init.placeholder
placeholder: function() {
if (PLACEHOLDER_SUPPORTED || !dojo.query('[placeholder]').length) {
// Exit if placeholder is supported natively,
// or if page does not have any placeholder.
return;
}
FORMALIZE.misc.add_placeholder();
dojo.query('[placeholder]').forEach(function(el) {
dojo.connect(el, 'onfocus', function() {
var text = el.getAttribute('placeholder');
if (el.value === text) {
el.value = '';
dojo.removeClass(el, 'placeholder_text');
}
});
dojo.connect(el, 'onblur', function() {
FORMALIZE.misc.add_placeholder();
});
});
// Prevent <form> from accidentally
// submitting the placeholder text.
dojo.query('form').forEach(function(form) {
dojo.connect(form, 'onsubmit', function() {
dojo.query('[placeholder]', form).forEach(function(el) {
var text = el.getAttribute('placeholder');
if (el.value === text) {
el.value = '';
dojo.removeClass(el, 'placeholder_text');
}
});
});
dojo.connect(form, 'onreset', function() {
setTimeout(FORMALIZE.misc.add_placeholder, 50);
});
});
}
},
// FORMALIZE.misc
misc: {
// FORMALIZE.misc.add_placeholder
add_placeholder: function() {
if (PLACEHOLDER_SUPPORTED || !dojo.query('[placeholder]').length) {
// Exit if placeholder is supported natively,
// or if page does not have any placeholder.
return;
}
dojo.query('[placeholder]').forEach(function(el) {
var text = el.getAttribute('placeholder');
if (!el.value || el.value === text) {
el.value = text;
dojo.addClass(el, 'placeholder_text');
}
});
}
}
};
// Alias window, document.
})(this, this.document);
// Automatically calls all functions in FORMALIZE.init
dojo.addOnLoad(function() {
FORMALIZE.go();
});