rabbit-simple-ui/src/styles/mixins/button.less

A simple UI component library based on JavaScript

.button-size(@height; @padding; @font-size; @border-radius) {
    height: @height;
    padding: @padding;
    font-size: @font-size;
    border-radius: @border-radius;
}

.button-color(@color; @background; @border) {
    color: @color;
    background-color: @background;
    border-color: @border;

    >a:only-child {
        color: currentColor;

        &:after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            bottom: 0;
            right: 0;
            background: transparent;
        }
    }
}

.button-variant(@color; @background; @border) {
    .button-color(@color; @background; @border);

    &:hover //&:focus

        {
        .button-color(tint(@color, 20%); tint(@background, 20%); tint(@border, 20%));
    }

    &:active,
    &.active {
        .button-color(shade(@color, 5%); shade(@background, 5%); shade(@background, 5%));
    }

    &.disabled,
    &[disabled],
    fieldset[disabled] & {

        &,
        &:hover,
        &:focus,
        &:active,
        &.active {
            .button-color(@btn-disable-color; @btn-disable-bg; @btn-disable-border);
        }
    }
}

.button-group-base(@btnClassName) {
    position: relative;
    display: inline-block;
    vertical-align: middle;

    >.@{btnClassName} {
        position: relative;
        float: left;

        &:hover,
        //&:focus,
        &:active,
        &.active {
            z-index: 2;
        }
    }

    &-circle .@{btnClassName} {
        border-radius: @btn-circle-size;
    }

    // size
    &-lg&-circle .@{btnClassName} {
        border-radius: @btn-circle-size-large;
    }

    &-lg {
        &>.@{btnClassName} {
            .button-size(@btn-height-large; @btn-padding-large; @btn-font-size-large; @btn-border-radius);
        }
    }

    &-sm&-circle .@{btnClassName} {
        border-radius: @btn-circle-size-small;
    }

    &-sm {
        &>.@{btnClassName} {
            .button-size(@btn-height-small; @btn-padding-small; @btn-font-size; @btn-border-radius-small);

            >.@{css-prefix-iconfont} {
                font-size: @btn-font-size;
            }
        }
    }

    &-sm .@{btnClassName}-icon-only {
        .square(@btn-height-small);
        padding: 0;
    }

    &-lg .@{btnClassName}-icon-only {
        .square(@btn-height-large);
        padding: 0;
    }
}

.button-group-vertical-base(@btnClassName) {
    display: inline-block;
    vertical-align: middle;

    >.@{btnClassName} {
        display: block;
        width: 100%;
        max-width: 100%;
        float: none;
        min-width: @btn-height-base;

    }

    &.@{btnClassName}-group-small>.@{btnClassName} {
        min-width: @btn-height-small;
    }

    &.@{btnClassName}-group-large>.@{btnClassName} {
        min-width: @btn-height-large;
    }
}

// square button: the content only contains icon
.btn-square(@btnClassName) {
    .square(@btn-square-size);
    .button-size(@btn-square-size; 0; @font-size-base + 2px; @btn-border-radius);

    &.@{btnClassName}-large {
        .square(@btn-square-size-large);
        .button-size(@btn-square-size-large; 0; @btn-font-size-large + 2px; @btn-border-radius);
    }

    &.@{btnClassName}-small {
        .square(@btn-square-size-small);
        .button-size(@btn-square-size-small; 0; @font-size-base; @btn-border-radius);
    }
}

.btn() {
    display: inline-block;
    margin-bottom: 0;
    font-weight: @btn-font-weight;
    text-align: center;
    vertical-align: middle;
    touch-action: manipulation;
    cursor: pointer;
    background-image: none;
    border: 1px solid transparent;
    white-space: nowrap;
    line-height: @line-height-base;
    user-select: none;
    .button-size(@btn-height-base; @btn-padding-base; @btn-font-size; @btn-border-radius);
    transition: color @transition-time linear, background-color @transition-time linear, border @transition-time linear, box-shadow @transition-time linear;

    >.@{css-prefix-iconfont} {
        line-height: 1.5;
        margin: 0 4px;
        height: 26px;
    }

    &-icon-only&-circle>.@{css-prefix-iconfont} {
        vertical-align: baseline;
    }

    >span,
    >i {
        display: inline-block;
        vertical-align: initial;
    }

    &,
    &:active,
    &:focus {
        outline: 0;
    }

    &:not([disabled]):hover {
        text-decoration: none;
    }

    &:not([disabled]):active {
        outline: 0;
    }

    &.disabled,
    &[disabled] {
        cursor: @cursor-disabled;

        >* {
            pointer-events: none;
        }
    }

    &-lg {
        .button-size(@btn-height-large; @btn-padding-large; @btn-font-size-large; @btn-border-radius);
    }

    &-sm {
        .button-size(@btn-height-small; @btn-padding-small; @btn-font-size; @btn-border-radius-small);
    }

    &-icon-only {
        .btn-square(@btn-prefix-cls);
    }
}

// Default
.btn-default() {
    .button-variant(@btn-default-color; @btn-default-bg; @btn-default-border);

    &:hover //&:focus

        {
        .button-color(tint(@primary-color, 20%); white; tint(@primary-color, 20%));
    }

    &:active,
    &.active {
        .button-color(shade(@primary-color, 5%); white; shade(@primary-color, 5%));
    }

    .active-btn-color(@primary-color);
}

// Primary
.btn-primary() {
    .button-variant(@btn-primary-color; @btn-primary-bg; @primary-color);

    &:hover,
    //&:focus,
    &:active,
    &.active {
        color: @btn-primary-color;
    }

    .active-btn-color(@primary-color);
}

// Ghost
.btn-ghost() {
    .button-variant(@btn-ghost-color, @btn-ghost-bg, @btn-ghost-border);

    &:hover //&:focus

        {
        .button-color(tint(@primary-color, 20%); @btn-ghost-bg; tint(@primary-color, 20%));
    }

    &:active,
    &.active {
        .button-color(shade(@primary-color, 5%); @btn-ghost-bg; shade(@primary-color, 5%));
    }

    .active-btn-color(@primary-color);
}

// Dashed
.btn-dashed() {
    .button-variant(@btn-ghost-color, @btn-ghost-bg, @btn-ghost-border);
    border-style: dashed;

    &:hover //&:focus

        {
        .button-color(tint(@primary-color, 20%); @btn-ghost-bg; tint(@primary-color, 20%));
    }

    &:active,
    &.active {
        .button-color(shade(@primary-color, 5%); @btn-ghost-bg; shade(@primary-color, 5%));
    }

    .active-btn-color(@primary-color);
}

// Text
.btn-text() {
    .button-variant(@btn-ghost-color, transparent, transparent);

    // for disabled
    &.disabled,
    &[disabled],
    fieldset[disabled] & {

        &,
        &:hover,
        &:focus,
        &:active,
        &.active {
            .button-color(@btn-disable-color; @btn-ghost-bg; transparent);
        }
    }

    &:hover //&:focus

        {
        .button-color(tint(@primary-color, 20%); @btn-ghost-bg; transparent);
    }

    &:active,
    &.active {
        .button-color(shade(@primary-color, 5%); @btn-ghost-bg; transparent);
    }

    .active-btn-color(@primary-color);
}

// Color
// for tabindex
.active-btn-color(@color) {
    &:focus {
        box-shadow: 0 0 0 2px fade(@color, 20%);
    }
}

.btn-color(@color) {
    .button-variant(@btn-primary-color; @color; @color);

    &:hover,
    //&:focus,
    &:active,
    &.active {
        color: @btn-primary-color;
    }

    .active-btn-color(@color);
}

// Circle for Icon
.btn-circle(@btnClassName: ivu-btn) {
    border-radius: @btn-circle-size;

    &.@{btnClassName}-large {
        border-radius: @btn-circle-size-large;
    }

    &.@{btnClassName}-size {
        border-radius: @btn-circle-size-small;
    }

    &.@{btnClassName}-icon-only {
        .square(@btn-circle-size);
        .button-size(@btn-height-base; 0; @font-size-base + 2; 50%);

        &.@{btnClassName}-large {
            .square(@btn-circle-size-large);
            .button-size(@btn-height-large; 0; @btn-font-size-large + 2; 50%);
        }

        &.@{btnClassName}-small {
            .square(@btn-circle-size-small);
            .button-size(@btn-height-small; 0; @font-size-base; 50%);
        }
    }
}

// Group
.btn-group(@btnClassName: ivu-btn) {
    .button-group-base(@btnClassName);

    .@{btnClassName}+.@{btnClassName},
    .@{btnClassName}+&,
    &+.@{btnClassName},
    &+& {
        margin-left: -1px;
    }

    .@{btnClassName}:not(:first-child):not(:last-child) {
        border-radius: 0;
    }

    &:not(&-vertical)>.@{btnClassName}:first-child {
        margin-left: 0;

        &:not(:last-child) {
            border-bottom-right-radius: 0;
            border-top-right-radius: 0;
        }
    }

    &:not(&-vertical)>.@{btnClassName}:last-child:not(:first-child) {
        border-bottom-left-radius: 0;
        border-top-left-radius: 0;
    }

    &>& {
        float: left;
    }

    &>&:not(:first-child):not(:last-child)>.@{btnClassName} {
        border-radius: 0;
    }

    &:not(&-vertical)>&:first-child:not(:last-child) {
        >.@{btnClassName}:last-child {
            border-bottom-right-radius: 0;
            border-top-right-radius: 0;
            padding-right: 8px;
        }
    }

    &:not(&-vertical)>&:last-child:not(:first-child)>.@{btnClassName}:first-child {
        border-bottom-left-radius: 0;
        border-top-left-radius: 0;
        padding-left: 8px;
    }
}

.btn-group-vertical(@btnClassName: ivu-btn) {
    .button-group-vertical-base(@btnClassName);

    .@{btnClassName}+.@{btnClassName},
    .@{btnClassName}+&,
    &+.@{btnClassName},
    &+& {
        margin-top: -1px;
        margin-left: 0px;
    }

    >.@{btnClassName}:first-child {
        margin-top: 0;

        &:not(:last-child) {
            border-bottom-left-radius: 0;
            border-bottom-right-radius: 0;
        }
    }

    >.@{btnClassName}:last-child:not(:first-child) {
        border-top-left-radius: 0;
        border-top-right-radius: 0;
    }

    &>&:first-child:not(:last-child) {
        >.@{btnClassName}:last-child {
            border-bottom-left-radius: 0;
            border-bottom-right-radius: 0;
            padding-bottom: 8px;
        }
    }

    &>&:last-child:not(:first-child)>.@{btnClassName}:first-child {
        border-bottom-right-radius: 0;
        border-bottom-left-radius: 0;
        padding-top: 8px;
    }
}