/*****************************************************************************
 * Open MCT, Copyright (c) 2014-2018, United States Government
 * as represented by the Administrator of the National Aeronautics and Space
 * Administration. All rights reserved.
 *
 * Open MCT is licensed under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0.
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 * Open MCT includes source code licensed under additional open source
 * licenses. See the Open Source Licenses file (LICENSES.md) included with
 * this source code distribution or the Licensing information page available
 * at runtime from the About dialog for additional information.
 *****************************************************************************/

/************************** GLYPHS */
@mixin glyphBefore($unicode, $family: 'symbolsfont') {
    &:before {
        content: $unicode;
        font-family: $family;
    }
}

@mixin glyphAfter($unicode, $family: 'symbolsfont') {
    &:after {
        content: $unicode;
        font-family: $family;
    }
}

@mixin glyphBg($glyphUrl) {
    background-image: $glyphUrl;
    background-position: center;
    background-size: contain;
    background-repeat: no-repeat;
}

[class*="icon-"] {
    &:before, &:after
    {
        -webkit-font-smoothing: antialiased;
    }
}

/************************** EFFECTS */
@mixin pulse($animName: pulse, $dur: 500ms, $iteration: infinite, $opacity0: 0.5, $opacity100: 1) {
    @keyframes pulse {
        0%   { opacity: $opacity0; }
        100% { opacity: $opacity100; }
    }
    animation-name: $animName;
    animation-duration: $dur;
    animation-direction: alternate;
    animation-iteration-count: $iteration;
    animation-timing-function: ease-in-out;
}

/************************** VISUALS */
@mixin ancillaryIcon($d, $c) {
    // Used for small icons used in combination with larger icons,
    // like the link and alert icons in tree items.
    color: $c;
    font-size: $d;
    line-height: $d;
    height: $d;
    width: $d;
}

@mixin appearanceNone() {
    -moz-appearance: none;
    -webkit-appearance: none;
    appearance: none;

    &:focus {
        outline: none;
    }
}

@mixin isAlias() {
    &:after {
        color:$colorIconAlias;
        content: $glyph-icon-link;
        display: block;
        font-family: symbolsfont;
        position: absolute;
        text-shadow: rgba(black, 0.5) 0 1px 4px;
        top: auto; left: 0; bottom: 10%; right: auto;
        transform-origin: left bottom;
        transform: scale(0.5);
    }
}

@mixin bgDiagonalStripes($c: yellow, $a: 0.1, $d: 40px) {
    background-image: linear-gradient(-45deg,
        rgba($c, $a) 25%, transparent 25%,
        transparent 50%, rgba($c, $a) 50%,
        rgba($c, $a) 75%, transparent 75%,
        transparent 100%
    ) repeat;
    background-size: $d $d;
}

@mixin bgStripes($c: yellow, $a: 0.1, $bgsize: 5px, $angle: 90deg) {
    background: linear-gradient($angle,
        rgba($c, $a) 25%, transparent 25%,
        transparent 50%, rgba($c, $a) 50%,
        rgba($c, $a) 75%, transparent 75%,
        transparent 100%
    ) repeat;
    background-size: $bgsize $bgsize;
}

@mixin bgStripes2Color($c1, $c2, $bgSize, $angle: -45deg) {
    background: linear-gradient(-45deg,
            $c1 0%, $c1 25%,
            $c2 25%, $c2 50%,
            $c1 50%, $c1 75%,
            $c2 75%, $c2 100%
    ) repeat;
    background-size: $bgSize;
}

@mixin bgCheckerboard($c: $colorBodyFg, $opacity: 0.3, $size: 32px, $imp: false) {
    $color: rgba($c, $opacity);
    $bgPos: floor($size / 2);

    $impStr: null;
    @if $imp {
        $impStr: !important;
    }

    background-image:
        linear-gradient(45deg, $color 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, $color 75%),
        linear-gradient(45deg, transparent 75%, $color 75%),
        linear-gradient(45deg, $color 25%, transparent 25%) $impStr;
    background-size: $size $size;
    background-position:0 0, 0 0, -1*$bgPos -1*$bgPos, $bgPos $bgPos;
}

@mixin disabled() {
    opacity: $controlDisabledOpacity;
    pointer-events: none !important;
    cursor: default !important;
}

@mixin grippy($c: rgba(black, 0.5), $dir: 'x') {
    $deg: 90deg;
    $bgSize: 2px 100%;

    @if $dir != 'x' {
        // Grippy texture runs 'vertically'
        $deg: 0deg;
        $bgSize: 100% 2px;
    }

    background: linear-gradient($deg,
            $c 1px, transparent 1px,
            transparent 100%
    ) repeat;
    background-size: $bgSize;
}

@mixin noColor() {
    // A "no fill/stroke" selection option. Used in palettes.
    $c: red;
    $s: 48%;
    $e: 52%;
    background-image: linear-gradient(-45deg,
        transparent $s - 5%,
        $c $s,
        $c $e,
        transparent $e + 5%
    );
    background-repeat: no-repeat;
    background-size: contain;
}

@mixin bgTicks($c: $colorBodyFg, $repeatDir: 'x') {
    $deg: 90deg;
    @if ($repeatDir != 'x') {
        $deg: 0deg;
        $repeatDir: repeat-y;
    } @else {
        $repeatDir: repeat-x;
    }

    background-image: linear-gradient($deg,
            $c 1px, transparent 1px,
            transparent 100%
    );
    background-repeat: $repeatDir;
}

@mixin sliderTrack($bg: $scrollbarTrackColorBg) {
    border-radius: 2px;
    box-sizing: border-box;
    background-color: $bg;
}

@mixin triangle($dir: "left", $size: 5px, $ratio: 1, $color: red) {
    width: 0;
    height: 0;
    $slopedB: $size/$ratio solid transparent;
    $straightB: $size solid $color;
    @if $dir == "up" {
        border-left: $slopedB;
        border-right: $slopedB;
        border-bottom: $straightB;
    } @else if $dir == "right" {
        border-top: $slopedB;
        border-bottom: $slopedB;
        border-left: $straightB;
    } @else if $dir == "down" {
        border-left: $slopedB;
        border-right: $slopedB;
        border-top: $straightB;
    } @else {
        border-top: $slopedB;
        border-bottom: $slopedB;
        border-right: $straightB;
    }
}

@mixin bgVertStripes($c: yellow, $a: 0.1, $d: 40px) {
    background-image: linear-gradient(-90deg,
        rgba($c, $a) 0%, rgba($c, $a) 50%,
        transparent 50%, transparent 100%
    );
    background-repeat: repeat;
    background-size: $d $d;
}

/************************** LAYOUT */
@mixin abs($m: 0) {
    position: absolute;
    top: $m; right: $m; bottom: $m; left: $m;
}

@mixin propertiesHeader() {
    border-radius: $smallCr;
    background-color: $colorInspectorSectionHeaderBg;
    color: $colorInspectorSectionHeaderFg;
    font-weight: normal;
    padding: $interiorMarginSm $interiorMargin;
    text-transform: uppercase;
}

@mixin modalFullScreen() {
    // Optional modifier that makes a c-menu more mobile-friendly
    position: fixed;
    border-radius: 0;
    top: 0; right: 0; bottom: 0; left: 0;
}

/************************** TEXT */
@mixin ellipsize() {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

@mixin reverseEllipsis() {
    @include ellipsize();
    direction: ltr;
    unicode-bidi:bidi-override;
}

/************************** CONTROLS, BUTTONS, INPUTS */
@mixin hover {
    body.desktop & {
        &:hover {
            @content
        }
    }
}

@mixin htmlInputReset() {
    @include appearanceNone();
    background: transparent;
    border: none;
    border-radius: 0;
    outline: none;
    text-align: inherit;

    &:focus {
        outline: 0;
    }
}

@mixin input-base() {
    @include htmlInputReset();
    border-radius: $controlCr;

    &.error {
        background: $colorFormFieldErrorBg;
        color: $colorFormFieldErrorFg;
    }
}

@mixin nice-input($bg: $colorInputBg, $fg: $colorInputFg, $shdw: rgba(black, 0.5) 0 0 2px) {
    @include input-base();
    background: $bg;
    color: $fg;
    box-shadow: inset $shdw;
}

@mixin reactive-input($bg: $colorInputBg, $fg: $colorInputFg) {
    @include input-base();
    background: $bg;
    box-shadow: $shdwInput;
    color: $fg;

    &:focus {
        box-shadow: $shdwInputFoc;
    }

    @include hover() {
        &:not(:focus) {
            box-shadow: $shdwInputHov;
        }
    }
}

@mixin button($bg: $colorBtnBg, $fg: $colorBtnFg, $radius: $controlCr, $shdw: none) {
    // Is this being used? Remove if not.
    background: $bg;
    color: $fg;
    border-radius: $radius;
    box-shadow: $shdw;
}

@mixin buttonBehavior() {
    // Assign transition timings
    transition: $transOut;

    @include hover() {
        transition: $transIn;
    }
}

@mixin cControl() {
    $fs: 1em;
    @include userSelectNone();
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: $fs; // Remove effect on top and bottom padding
    overflow: hidden;

    &:before,
    &:after {
        font-family: symbolsfont;
        display: block;
        flex: 0 0 auto;
    }

    &:before {
        font-size: 0.9em;
    }

    &:after {
        font-size: 0.8em;
    }

    [class*="__label"] {
        @include ellipsize();
        display: block;
        font-size: $fs;
    }

    &[class*='icon'] > [class*="__label"] {
        // When button holds both an icon and a label, provide margin between them.
        margin-left: $interiorMarginSm;
    }
}

@mixin cButton() {
    @include cControl();
    @include themedButton();
    border-radius: $controlCr;
    color: $colorBtnFg;
    cursor: pointer;
    padding: $interiorMargin floor($interiorMargin * 1.25);

    &:after,
    > * + * {
        margin-left: $interiorMarginSm;
    }

    @include hover() {
        background: $colorBtnBgHov;
        color: $colorBtnFgHov;
    }

    &[class*="--major"],
    &[class*='is-active']{
        background: $colorBtnMajorBg;
        color: $colorBtnMajorFg;

        @include hover() {
            background: $colorBtnMajorBgHov;
            color: $colorBtnMajorFgHov;
        }
    }

    &[class*='--caution'] {
        background: $colorBtnCautionBg;
        color: $colorBtnCautionFg;

        &:hover {
            background: $colorBtnCautionBgHov;
        }
    }
}

@mixin cClickIcon() {
    @include cControl();
    color: $colorBodyFg;
    cursor: pointer;
    padding: 4px; // Bigger hit area
    opacity: 0.6;
    transition: $transOut;
    transform-origin: center;

    @include hover() {
        transform: scale(1.1);
        transition: $transIn;
        opacity: 1;
    }
}

@mixin cClickIconButtonLayout() {
    $pLR: 4px;
    $pTB: 4px;
    padding: $pTB $pLR;

    &:before,
    *:before {
        // *:before handles any nested containers that may contain glyph elements
        // Needed for c-togglebutton.
        font-size: 1.25em;
    }
}

@mixin cClickIconButton() {
    // A clickable element that just includes the icon
    // Background is displayed on hover
    // Padding is included to facilitate a bigger hit area
    // Make the icon bigger relative to its container
    @include cControl();
    @include cClickIconButtonLayout();
    background: none;
    box-shadow: none;
    cursor: pointer;
    transition: $transOut;
    border-radius: $controlCr;

    @include hover() {
        transition: $transIn;
        background: $colorClickIconButtonBgHov;
        color: $colorClickIconButtonFgHov;
    }

    &[class*="--major"] {
        color: $colorKey;
    }
}

@mixin cCtrlWrapper {
    // Provides a wrapper around  buttons and other controls
    // Contains control and provides positioning context for contained menu/palette.
    // Wraps --menu elements, contains button and menu
    overflow: visible;

    .c-menu {
        // Default position of contained menu
        top: 100%; left: 0;
    }

    &[class*='--menus-up'] {
        .c-menu {
            top: auto; bottom: 100%;
        }
    }

    &[class*='--menus-left'] {
        .c-menu {
            left: auto; right: 0;
        }
    }
}

@mixin hasMenu() {
    &:after {
        content: $glyph-icon-arrow-down;
        font-family: symbolsfont;
        font-size: 0.7em;
        margin-left: floor($interiorMarginSm * 0.8);
        opacity: 0.5;
    }
}

@mixin cSelect($bg, $fg, $arwClr, $shdw) {
    $svgArwClr: str-slice(inspect($arwClr), 2, str-length(inspect($arwClr))); // Remove initial # in color value
    background: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10'%3e%3cpath fill='%23#{$svgArwClr}' d='M5 5l5-5H0z'/%3e%3c/svg%3e"), $bg;
    color: $fg;
    box-shadow: $shdw;
}

@mixin wrappedInput() {
    // An input that is wrapped. Optionally includes a __label or icon element.
    // Based on .c-search.
    @include nice-input();
    display: flex;
    align-items: center;
    padding-left: 4px;
    padding-right: 4px;

    &:before,
    [class*='__label'] {
        opacity: 0.5;
    }

    &:before {
        // Adds an icon. Content defined in class.
        direction: rtl; // Aligns glyph to right-hand side of container, for transition
        display: block;
        font-family: symbolsfont;
        flex: 0 0 auto;
        overflow: hidden;
        padding: 2px 0; // Prevents clipping
        transition: width 250ms ease;
        width: 1em;
    }

    &:hover {
        box-shadow: inset rgba(black, 0.8) 0 0px 2px;
        &:before {
            opacity: 0.9;
        }
    }

    &--major {
        padding: 4px;
    }

    &__input,
    input[type='text'],
    input[type='search'],
    input[type='number'] {
        background: none  !important;
        box-shadow: none !important; // !important needed to override default for [input]
        flex: 1 1 auto;
        padding-left: 2px !important;
        padding-right: 2px !important;
        min-width: 10px; // Must be set to allow input to collapse below browser min
    }

    &.is-active {
        &:before {
            padding: 2px 0px;
            width: 0px;
        }
    }
}

/************************** MATH */
@function percentToDecimal($p) {
    @return $p / 100%;
}

@function decimalToPercent($d) {
    @return percentage($d);
}

/************************** UTILITIES */
@mixin browserPrefix($prop, $val) {
    #{$prop}: $val;
    -ms-#{$prop}: $val;
    -moz-#{$prop}: $val;
    -webkit-#{$prop}: $val;
}

@mixin userSelectNone() {
    @include browserPrefix(user-select, none);
}

@mixin cursorGrab() {
    cursor: grab;
    cursor: -webkit-grab;
    &:active {
        cursor: grabbing;
        cursor: -webkit-grabbing;
    }
}

@function svgColorFromHex($hexColor) {
    // Remove initial # in color value
    @return str-slice(inspect($hexColor), 2, str-length(inspect($hexColor)));
}

@mixin test($c: deeppink, $a: 0.3) {
    background: rgba($c, $a) !important;
    background-color: rgba($c, $a) !important;
}


@mixin sUnsynced() {
    $c: $colorPausedBg;
    border: 1px solid $c;
}