//
// Forms
// --------------------------------------------------

@mixin scaffold-forms() {

    // Normalize non-controls
    //
    // Restyle and baseline non-control form elements.

    fieldset {
        padding: 0;
        margin: 0;
        border: 0;
        // Chrome and Firefox set a `min-width: min-content;` on fieldsets,
        // so we reset that to ensure it behaves more like a standard block element.
        // See https://github.com/twbs/bootstrap/issues/12359.
        min-width: 0;
    }

    legend {
        display: block;
        width: 100%;
        padding: 0;
        margin-bottom: $line-height-computed;
        font-size: ($font-size-base * 1.5);
        line-height: inherit;
        color: $legend-color;
        border: 0;
        border-bottom: 1px solid $legend-border-color;
    }

    label {
        display: inline-block;
        max-width: 100%; // Force IE8 to wrap long content (see https://github.com/twbs/bootstrap/issues/13141)
        margin-bottom: 5px;
        font-weight: bold;
        font-size: $font-size-small;
    }

    // Normalize form controls
    //
    // While most of our form styles require extra classes, some basic normalization
    // is required to ensure optimum display with or without those classes to better
    // address browser inconsistencies.

    // Override content-box in Normalize (* isn't specific enough)
    input[type="search"] {
        box-sizing: border-box;
    }

    // Position radios and checkboxes better
    input[type="radio"],
    input[type="checkbox"] {
        margin: 4px 0 0;
        margin-top: 1px \9
    ; // IE8-9
        line-height: normal;
    }

    input[type="file"] {
        display: block;
    }

    // Make range inputs behave like textual form controls
    input[type="range"] {
        display: block;
        width: 100%;
    }

    // Make multiple select elements height not fixed
    select[multiple],
    select[size] {
        height: auto;
    }

    // Focus for file, radio, and checkbox
    input[type="file"]:focus,
    input[type="radio"]:focus,
    input[type="checkbox"]:focus {
        @include tab-focus;
    }

    // Adjust output element
    output {
        display: block;
        padding-top: ($padding-base-vertical + 1);
        font-size: $font-size-base;
        line-height: $line-height-base;
        color: $input-color;
    }

    .formControl {
        @include make-formControl;
    }

    // Reset height for `textarea`s
    textarea.formControl {
        height: auto;
    }

    // Search inputs in iOS
    //
    // This overrides the extra rounded corners on search inputs in iOS so that our
    // `.form-control` class can properly style them. Note that this cannot simply
    // be added to `.form-control` as it's not specific enough. For details, see
    // https://github.com/twbs/bootstrap/issues/11586.

    input[type="search"] {
        -webkit-appearance: none;
    }

    // Special styles for iOS temporal inputs
    //
    // In Mobile Safari, setting `display: block` on temporal inputs causes the
    // text within the input to become vertically misaligned. As a workaround, we
    // set a pixel line-height that matches the given height of the input, but only
    // for Safari. See https://bugs.webkit.org/show_bug.cgi?id=139848
    //
    // Note that as of 9.3, iOS doesn't support `week`.

    @media screen and (-webkit-min-device-pixel-ratio: 0) {
        input[type="date"],
        input[type="time"],
        input[type="datetime-local"],
        input[type="month"] {
            &.formControl {
                line-height: $input-height-base;
            }

            &.inputSm,
            .inputGroupSm & {
                line-height: $input-height-small;
            }

            &.inputLg,
            .input-groupLg & {
                line-height: $input-height-large;
            }
        }
    }

    // Form groups
    //
    // Designed to help with the organization and spacing of vertical forms. For
    // horizontal forms, use the predefined grid classes.

    .formGroup {
        margin-bottom: $form-group-margin-bottom;
    }

    // Checkboxes and radios
    //
    // Indent the labels to position radios/checkboxes as hanging controls.

    .radio,
    .checkbox {
        position: relative;
        display: block;
        margin-top: 10px;
        margin-bottom: 10px;

        label {
            min-height: $line-height-computed; // Ensure the input doesn't jump when there is no text
            padding-left: 20px;
            margin-bottom: 0;
            font-weight: normal;
            cursor: pointer;
        }
    }

    .radio input[type="radio"],
    .radioInline input[type="radio"],
    .checkbox input[type="checkbox"],
    .checkboxInline input[type="checkbox"] {
        position: absolute;
        margin-left: -20px;
        margin-top: 4px \9
    ;
    }

    .radio + .radio,
    .checkbox + .checkbox {
        margin-top: -5px; // Move up sibling radios or checkboxes for tighter spacing
    }

    // Radios and checkboxes on same line
    .radioInline,
    .checkboxInline {
        position: relative;
        display: inline-block;
        padding-left: 20px;
        margin-bottom: 0;
        vertical-align: middle;
        font-weight: normal;
        cursor: pointer;
    }

    .radioInline + .radioInline,
    .checkboxInline + .checkboxInline {
        margin-top: 0;
        margin-left: 10px; // space out consecutive inline controls
    }

    // Apply same disabled cursor tweak as for inputs
    // Some special care is needed because <label>s don't inherit their parent's `cursor`.
    //
    // Note: Neither radios nor checkboxes can be readonly.
    input[type="radio"],
    input[type="checkbox"] {
        &[disabled],
        &.disabled,
        fieldset[disabled] & {
            cursor: $cursor-disabled;
        }
    }

    // These classes are used directly on <label>s
    .radioInline,
    .checkboxInline {
        &.disabled,
        fieldset[disabled] & {
            cursor: $cursor-disabled;
        }
    }

    // These classes are used on elements with <label> descendants
    .radio,
    .checkbox {
        &.disabled,
        fieldset[disabled] & {
            label {
                cursor: $cursor-disabled;
            }
        }
    }

    // Static form control text
    //
    // Apply class to a `p` element to make any string of text align with labels in
    // a horizontal form layout.

    .formControlStatic {
        // Size it appropriately next to real form controls
        padding-top: ($padding-base-vertical + 1);
        padding-bottom: ($padding-base-vertical + 1);
        // Remove default margin from `p`
        margin-bottom: 0;
        min-height: ($line-height-computed + $font-size-base);

        &.inputLg,
        &.inputSm {
            padding-left: 0;
            padding-right: 0;
        }
    }

    // Form control sizing
    //
    // Build on `.form-control` with modifier classes to decrease or increase the
    // height and font-size of form controls.
    //
    // The `.form-group-* form-control` variations are sadly duplicated to avoid the
    // issue documented in https://github.com/twbs/bootstrap/issues/15074.

    @include input-size('.inputSm', $input-height-small, $padding-small-vertical, $padding-small-horizontal, $font-size-small, $line-height-small, $input-border-radius-small);
    .formGroupSm {
        .formControl {
            height: $input-height-small;
            padding: $padding-small-vertical $padding-small-horizontal;
            font-size: $font-size-small;
            line-height: $line-height-small;
            border-radius: $input-border-radius-small;
        }
        select.formControl {
            height: $input-height-small;
            line-height: $input-height-small;
        }
        textarea.formControl,
        select[multiple].form-control {
            height: auto;
        }
        .formControlStatic {
            height: $input-height-small;
            min-height: ($line-height-computed + $font-size-small);
            padding: ($padding-small-vertical + 1) $padding-small-horizontal;
            font-size: $font-size-small;
            line-height: $line-height-small;
        }
    }

    @include input-size('.inputLg', $input-height-large, $padding-large-vertical, $padding-large-horizontal, $font-size-large, $line-height-large, $input-border-radius-large);
    .formGroupLg {
        .formControl {
            height: $input-height-large;
            padding: $padding-large-vertical $padding-large-horizontal;
            font-size: $font-size-large;
            line-height: $line-height-large;
            border-radius: $input-border-radius-large;
        }
        select.formControl {
            height: $input-height-large;
            line-height: $input-height-large;
        }
        textarea.formControl,
        select[multiple].form-control {
            height: auto;
        }
        .formControlStatic {
            height: $input-height-large;
            min-height: ($line-height-computed + $font-size-large);
            padding: ($padding-large-vertical + 1) $padding-large-horizontal;
            font-size: $font-size-large;
            line-height: $line-height-large;
        }
    }

    // Form control feedback states
    //
    // Apply contextual and semantic states to individual form controls.

    .hasFeedback {
        // Enable absolute positioning
        position: relative;

        // Ensure icons don't overlap text
        .formControl {
            padding-right: ($input-height-base * 1.25);
        }
    }

    // Feedback icon (requires .glyphicon classes)
    .formControlFeedback {
        position: absolute;
        top: 0;
        right: 0;
        z-index: 2; // Ensure icon is above input groups
        display: block;
        width: $input-height-base;
        height: $input-height-base;
        line-height: $input-height-base;
        text-align: center;
        pointer-events: none;
    }

    .inputLg + .formControlFeedback,
    .inputGroupLg + .formControlFeedback,
    .formGroupLg .formControl + .formControlFeedback {
        width: $input-height-large;
        height: $input-height-large;
        line-height: $input-height-large;
    }

    .inputSm + .form-controlFeedback,
    .inputGroupSm + .formControlFeedback,
    .formGroupSm .formControl + .formControlFeedback {
        width: $input-height-small;
        height: $input-height-small;
        line-height: $input-height-small;
    }

    // Feedback states
    .hasSuccess {
        @include form-control-validation($state-success-text, $state-success-text, $state-success-bg);
    }

    .hasWarning {
        @include form-control-validation($state-warning-text, $state-warning-text, $state-warning-bg);
    }

    .hasError {
        @include form-control-validation($state-danger-text, $state-danger-text, $state-danger-bg);
    }

    // Reposition feedback icon if input has visible label above
    .hasFeedback label {

        & ~ .formControlFeedback {
            top: ($line-height-computed + 5); // Height of the `label` and its margin
        }
        &.srOnly ~ .formControlFeedback {
            top: 0;
        }
    }

    // Help text
    //
    // Apply to any element you wish to create light text for placement immediately
    // below a form control. Use for general help, formatting, or instructional text.

    .helpBlock {
        display: block; // account for any element using help-block
        margin-top: 5px;
        margin-bottom: 10px;
        color: lighten($text-color, 25%); // lighten the text some for contrast
    }

    // [converter] extracted as `@mixin form-inline` for libsass compatibility
    .formInline {
        @include form-inline;
    }

    // Horizontal forms
    //
    // Horizontal forms are built on grid classes and allow you to create forms with
    // labels on the left and inputs on the right.

    .formHorizontal {

        // Consistent vertical alignment of radios and checkboxes
        //
        // Labels also get some reset styles, but that is scoped to a media query below.
        .radio,
        .checkbox,
        .radioInline,
        .checkboxInline {
            margin-top: 0;
            margin-bottom: 0;
            padding-top: ($padding-base-vertical + 1); // Default padding plus a border
        }
        // Account for padding we're adding to ensure the alignment and of help text
        // and other content below items
        .radio,
        .checkbox {
            min-height: ($line-height-computed + ($padding-base-vertical + 1));
        }

        // Make form groups behave like rows
        .formGroup {
            @include make-row;
        }

        // Reset spacing and right align labels, but scope to media queries so that
        // labels on narrow viewports stack the same as a default form example.
        @media (min-width: $screen-sm-min) {
            .controlLabel {
                text-align: right;
                margin-bottom: 0;
                padding-top: ($padding-base-vertical + 1); // Default padding plus a border
            }
        }

        // Validation states
        //
        // Reposition the icon because it's now within a grid column and columns have
        // `position: relative;` on them. Also accounts for the grid gutter padding.
        .hasFeedback .formControlFeedback {
            right: floor(($grid-gutter-width / 2));
        }

        // Form group sizes
        //
        // Quick utility class for applying `.input-lg` and `.input-sm` styles to the
        // inputs and labels within a `.form-group`.
        .formGroupLg {
            @media (min-width: $screen-sm-min) {
                .controlLabel {
                    padding-top: ($padding-large-vertical + 1);
                    font-size: $font-size-large;
                }
            }
        }
        .formGroupSm {
            @media (min-width: $screen-sm-min) {
                .control-label {
                    padding-top: ($padding-small-vertical + 1);
                    font-size: $font-size-small;
                }
            }
        }
    }

}