// Form elements and layouts

@import "mediawiki.mixins";
@import "mediawiki.ui/variables";
@import "mediawiki.ui/mixins";

// --------------------------------------------------------------------------
// Layouts
// --------------------------------------------------------------------------

// The FancyCaptcha image CAPTCHA used on WMF wikis drives the width of the
// 'VForm' design, the form can't be narrower than this.
@captchaContainerWidth: 290px;
@defaultFormWidth: @captchaContainerWidth;

// Forms
//
// Styleguide 5.

// VForm
//
// Style a compact vertical stacked form ("VForm") and the elements in divs
// within it. See button and inputs section on guidance of how and when to use them.
//
// Markup:
// <form class="mw-ui-vform">
//   <div class="mw-ui-vform-field">This is a form example.</div>
//   <div class="mw-ui-vform-field">
//     <label>Username </label>
//     <input class="mw-ui-input" value="input">
//   </div>
//   <div class="mw-ui-vform-field">
//     <button class="mw-ui-button mw-ui-progressive">Button in vform</button>
//   </div>
// </form>
//
// Styleguide 5.1.
.mw-ui-vform {
	.box-sizing( border-box );

	width: @defaultFormWidth;

	// MW currently doesn't use the type attribute everywhere on inputs.
	select,
	.mw-ui-button {
		display: block;
		.box-sizing( border-box );
		margin: 0;
		width: 100%;
	}

	// Give dropdown lists the same spacing as input fields for consistency.
	// Values taken from .agora-field-styling() in mixins/form.less
	select {
		padding: 0.35em 0.5em;
		vertical-align: middle;
	}

	> label {
		display: block;
		.box-sizing( border-box );
		.agora-label-styling();
		width: auto;
		margin: 0 0 0.2em;
		padding: 0;
	}

	// Override input styling just for checkboxes and radio inputs.
	input[type="radio"] {
		display: inline;
		.box-sizing( content-box );
		width: auto;
	}

	// Styles for information boxes
	//
	// Regular HTMLForm uses .error class, some special pages like
	// SpecialUserlogin (login and create account) use .errorbox.
	//
	// Markup:
	// <form class="mw-ui-vform">
	//   <div class="errorbox">An error occurred</div>
	//   <div class="warningbox">A warning to be noted</div>
	//   <div class="successbox">Action successful!</div>
	//   <div class="error">A different kind of error</div>
	//   <div class="error">
	//     <ul><li>There are problems with some of your input.</li></ul>
	//   </div>
	//   <div class="mw-ui-vform-field">
	//     <input type="text" value="input" class="mw-ui-input">
	//   </div>
	//   <div class="mw-ui-vform-field">
	//     <select>
	//       <option value="1">Option 1</option>
	//       <option value="2">Option 2</option>
	//     </select>
	//     <span class="error">The value you specified is not a valid option.</span>
	//   </div>
	//   <div class="mw-ui-vform-field">
	//     <button class="mw-ui-button">Button in vform</button>
	//   </div>
	// </form>
	//
	// Styleguide 5.2.
	.error,
	.warning,
	.errorbox,
	.warningbox,
	.successbox {
		.box-sizing( border-box );
		font-size: 0.9em;
		margin: 0 0 1em 0;
		padding: 0.5em;
		word-wrap: break-word;
	}

	// Colours taken from those for .errorbox in shared.css
	.error {
		color: @colorErrorText;
		border: 1px solid #fac5c5;
		background-color: #fae3e3;
	}

	// Colours taken from those for .warningbox in shared.css
	.warning {
		color: @colorWarningText;
		border: 1px solid #fde29b;
		background-color: #fdf1d1;
	}

	// This specifies styling for individual field validation error messages.
	// Show them below the fields to prevent line break glitches, and leave
	// some space between the field and the error message box.
	.mw-ui-vform-field .error {
		display: block;
		margin-top: 5px;
	}

}

// --------------------------------------------------------------------------
// Elements
// --------------------------------------------------------------------------

// A wrapper for a single form field: the <input> / <select> / <button> element,
// help text, labels, associated error/warning/success messages, and so on.
// Elements with this class are generated by HTMLFormField in core MediaWiki.
//
// (We use a broad definition of 'field' here: a purely textual information
// block is also a "field".)
.mw-ui-vform-field {
	display: block;
	margin: 0 0 15px;
	padding: 0;
	width: 100%;
}

// Apply mw-ui-label to individual elements to style them.
// You generally don't need to use this class if <label> is within an Agora
// form container such as mw-ui-vform
.mw-ui-label {
	.agora-label-styling();
}

// Nesting an input  inside a label with this class
// improves alignment, e.g.
//
// <label class="mw-ui-radio-label">
//   <input type="radio">The label text
// </label>
.mw-ui-radio-label {
	.agora-inline-label-styling();
}