$button-icon-spacing: dynamic(16px);
$button-large-border-width: dynamic(0px);
$button-large-font-size: dynamic($button-medium-font-size + 4);
$button-large-font-size: dynamic(24px);
$button-large-line-height: dynamic(36px);
$button-large-padding: dynamic(10px 16px 10px 16px);
$button-large-split-height: dynamic(48px);
$button-medium-border-width: dynamic(0px);
$button-medium-font-size: dynamic($button-small-font-size + 2);
$button-medium-line-height: dynamic(32px);
$button-medium-padding: dynamic(10px 16px 10px 16px);
$button-medium-split-height: dynamic(48px);
$button-medium-split-width: dynamic(28px);
$button-opacity-disabled: dynamic(0.65);
$button-small-border-width: dynamic(0px);
$button-small-font-size: dynamic($font-size);
$button-small-font-size: dynamic(18px);
$button-small-glyph-font-size: dynamic(18px);
$button-small-arrow-glyph: dynamic($fa-var-caret-down 18px $font-icon-font-family);
$button-small-line-height: dynamic(28px);
$button-small-padding: dynamic(10px 16px 10px 16px);
$button-small-split-height: dynamic(48px);

$button-default-opacity-disabled: dynamic($button-opacity-disabled);

$button-default-background-color: dynamic(#1b1b1b);
$button-default-background-color-over: dynamic(#868686);
$button-default-background-color-focus: dynamic($focus-background-color);
$button-default-background-color-focus-over: dynamic($focus-background-color);
$button-default-background-color-pressed: dynamic(#e6e6e6);
$button-default-background-color-pressed-over: dynamic(#cecece);
$button-default-background-color-focus-pressed: dynamic(#0072b2);

$button-default-color: dynamic(#f0f0f0);
$button-default-color-over: dynamic($button-default-color);
$button-default-color-focus: dynamic($button-default-color);
$button-default-color-pressed: dynamic(#1b1b1b);
$button-default-color-pressed-over: dynamic($button-default-color-pressed);
$button-default-color-focus-over: dynamic($button-default-color-focus);
$button-default-color-focus-pressed: dynamic($button-default-color);

$button-default-split-line-color: dynamic($button-default-color);
$button-default-split-line-color-over: dynamic($button-default-color-over);
$button-default-split-line-color-focus: dynamic($button-default-color-focus);
$button-default-split-line-color-pressed: dynamic($button-default-color-pressed);
$button-default-split-line-color-pressed-over: dynamic($button-default-color-pressed-over);
$button-default-split-line-color-focus-over: dynamic($button-default-color-focus-over);
$button-default-split-line-color-focus-pressed: dynamic($button-default-split-line-color-focus);

$button-default-inner-border-width: dynamic(null);
$button-default-inner-border-width-over: dynamic(null);
$button-default-inner-border-width-focus: dynamic(null);
$button-default-inner-border-width-focus-over: dynamic(null);
$button-default-inner-border-width-pressed: dynamic(null);
$button-default-inner-border-width-focus-pressed: dynamic(null);
$button-default-inner-border-width-disabled: dynamic(null);

$button-default-focus-over-border-width: dynamic($focus-over-border-width);
$button-default-focus-over-border-color: dynamic($focus-over-border-color);

$button-default-segmented-inner-border-color: dynamic(#424242);
$button-default-segmented-inner-border-width: dynamic(1px);

$button-toolbar-opacity-disabled: dynamic(0.5);

$button-toolbar-background-color: dynamic(#d9d9d9);
$button-toolbar-background-color-over: dynamic(#aeaeae);
$button-toolbar-background-color-pressed: dynamic(#9d9d9d);
$button-toolbar-background-color-pressed-over: dynamic(#b8b8b8);
$button-toolbar-background-color-focus: dynamic($focus-background-color);
$button-toolbar-background-color-focus-over: dynamic($button-toolbar-background-color-focus);
$button-toolbar-background-color-focus-pressed: dynamic(#0072b2);

$button-toolbar-color: dynamic(#1b1b1b);
$button-toolbar-color-over: dynamic($button-toolbar-color);
$button-toolbar-color-pressed: dynamic(#fff);
$button-toolbar-color-pressed-over: dynamic($button-toolbar-color-pressed);
$button-toolbar-color-focus: dynamic(#f0f0f0);
$button-toolbar-color-focus-over: dynamic($button-toolbar-color-focus);
$button-toolbar-color-focus-pressed: dynamic($button-toolbar-color-focus);

$button-toolbar-split-line-color: dynamic($button-toolbar-color);
$button-toolbar-split-line-color-over: dynamic($button-toolbar-color-over);
$button-toolbar-split-line-color-focus: dynamic($button-toolbar-color);
$button-toolbar-split-line-color-pressed: dynamic($button-toolbar-color-pressed);
$button-toolbar-split-line-color-pressed-over: dynamic($button-toolbar-color-pressed-over);
$button-toolbar-split-line-color-focus-over: dynamic($button-toolbar-color-focus-over);
$button-toolbar-split-line-color-focus-pressed: dynamic($button-toolbar-split-line-color-focus);

$button-toolbar-inner-border-width: dynamic(null);
$button-toolbar-inner-border-width-over: dynamic(null);
$button-toolbar-inner-border-width-focus: dynamic(null);
$button-toolbar-inner-border-width-focus-over: dynamic(null);
$button-toolbar-inner-border-width-pressed: dynamic(null);
$button-toolbar-inner-border-width-focus-pressed: dynamic(null);
$button-toolbar-inner-border-width-disabled: dynamic(null);

$button-toolbar-focus-over-border-width: dynamic($focus-over-border-width);
$button-toolbar-focus-over-border-color: dynamic($focus-over-border-color);

$button-plain-toolbar-color: dynamic(#f0f0f0);

@mixin extjs-graphite-button-ui(
    $ui: null,
    
    $color: null,
    $color-pressed: null,
    $color-pressed-over: null,
    $color-focus: null,
    $color-focus-pressed: null,
    
    $background-color: null,
    $background-color-pressed: null,
    $background-color-pressed-over: null,
    $background-color-focus: null,
    $background-color-focus-pressed: null,
    
    $inner-border-width-focus-over: null,
    $inner-border-color-focus-over: null,
    
    $opacity-disabled: null,
    
    $icon-spacing: null
) {
    .#{$prefix}btn-#{$ui} {
        @if $icon-spacing != null { 
            // TODO Get rid of this magic padding!
            .#{$prefix}btn-wrap-#{$ui}.#{$prefix}btn-arrow-right:after {
                padding-left: ceil($icon-spacing / 2);
                padding-top: ceil($icon-spacing / 8);
            }
        }
        
        @if $color != null {
            .#{$prefix}btn-wrap-#{$ui} {
                &.#{$prefix}btn-arrow:after {
                    color: $color;
                }
                
                .#{$prefix}btn-inner-#{$ui} {
                    color: $color;
                }
                
                .#{$prefix}btn-icon-el-#{$ui} {
                    color: $color;
                }
            }
        }
        
        @if $background-color-focus != null $color-focus != null or
            $inner-border-width-focus-over != null
        {
            .#{$prefix}keyboard-mode &.#{$prefix}btn-focus {
                @if $background-color-focus != null {
                    background-color: $background-color-focus;
                }
                
                @if $color-focus != null {
                    .#{$prefix}btn-wrap-#{$ui} {
                        &.#{$prefix}btn-arrow:after {
                            color: $color-focus;
                        }
                        
                        .#{$prefix}btn-inner-#{$ui} {
                            color: $color-focus;
                        }
                        
                        .#{$prefix}btn-icon-el-#{$ui} {
                            color: $color-focus;
                        }
                    }
                }
                
                @if $inner-border-width-focus-over != null {
                    &.#{$prefix}btn-over {
                        @include inner-border(
                            $inner-border-width-focus-over,
                            $inner-border-color-focus-over
                        );
                    }
                }
            }
        }
        
        &.#{$prefix}btn-pressed,
        &.#{$prefix}btn-menu-active {
            @if $color-pressed != null {
                .#{$prefix}btn-wrap-#{$ui} {
                    &.#{$prefix}btn-arrow:after {
                        color: $color-pressed;
                    }
                    
                    .#{$prefix}btn-inner-#{$ui} {
                        color: $color-pressed;
                    }
                    
                    .#{$prefix}btn-icon-el-#{$ui} {
                        color: $color-pressed;
                    }
                }
            }
            
            @if $background-color-pressed-over != null or $color-pressed-over != null {
                &.#{$prefix}btn-over {
                    @if $background-color-pressed-over != null {
                        background-color: $background-color-pressed-over;
                    }
                    
                    @if $color-pressed-over != null {
                        .#{$prefix}btn-wrap-#{$ui} {
                            &.#{$prefix}btn-arrow:after {
                                color: $color-pressed-over;
                            }
                            
                            .#{$prefix}btn-inner-#{$ui} {
                                color: $color-pressed-over;
                            }
                            
                            .#{$prefix}btn-icon-el-#{$ui} {
                                color: $color-pressed-over;
                            }
                        }
                    }
                }
            }
            
            @if $background-color-focus-pressed != null or $color-focus-pressed != null {
                .#{$prefix}keyboard-mode &.#{$prefix}btn-focus {
                    @if $background-color-focus-pressed != null {
                        background-color: $background-color-focus-pressed;
                    }
                    
                    @if $color-focus-pressed != null {
                        .#{$prefix}btn-wrap-#{$ui} {
                            &.#{$prefix}btn-arrow:after {
                                color: $color-focus-pressed;
                            }
                            
                            .#{$prefix}btn-inner-#{$ui} {
                                color: $color-focus-pressed;
                            }
                            
                            .#{$prefix}btn-icon-el-#{$ui} {
                                color: $color-focus-pressed;
                            }
                        }
                    }
                }
            }
        }
        
        @if $background-color != null or $color != null {
            &.#{$prefix}btn-disabled {
                @if $background-color != null {
                    background-color: rgba($background-color, $opacity-disabled);
                }
                
                @if $color != null {
                    .#{$prefix}btn-wrap-#{$ui} {
                        &.#{$prefix}btn-arrow:after {
                            color: rgba($color, $opacity-disabled);
                        }
                        
                        .#{$prefix}btn-inner-#{$ui} {
                            color: rgba($color, $opacity-disabled);
                        }
                        
                        .#{$prefix}btn-icon-el-#{$ui} {
                            color: rgba($color, $opacity-disabled);
                        }
                    }
                }
                
                @if $background-color-pressed != null or $color-pressed != null {
                    &.#{$prefix}btn-pressed {
                        @if $background-color-pressed != null {
                            background-color: rgba($background-color-pressed, $opacity-disabled);
                        }
                        
                        @if $color-pressed != null {
                            .#{$prefix}btn-wrap-#{$ui} {
                                &.#{$prefix}btn-arrow:after {
                                    color: rgba($color-pressed, $opacity-disabled);
                                }
                                
                                .#{$prefix}btn-inner-#{$ui} {
                                    color: rgba($color-pressed, $opacity-disabled);
                                }
                                
                                .#{$prefix}btn-icon-el-#{$ui} {
                                    color: rgba($color-pressed, $opacity-disabled);
                                }
                            }
                        }
                    }
                }
            }
        }
    }
}

@mixin extjs-graphite-splitbutton-ui(
    $ui,
    
    $split-width: null,
    $split-height: null,
    $split-line-width: null,
    
    $padding: null,

    $border-color: null,
    
    $background-color: null,
    $background-color-over: null,
    $background-color-focus: null,
    $background-color-focus-over: null,
    $background-color-pressed: null,
    $background-color-pressed-over: null,
    $background-color-focus-pressed: null,

    $color: null,
    $color-over: null,
    $color-focus: null,
    $color-focus-over: null,
    $color-pressed: null,
    $color-pressed-over: null,
    $color-focus-pressed: null,
    
    $separator-color: $color,
    $separator-color-over: $color-over,
    $separator-color-focus: $color-focus,
    $separator-color-focus-over: $color-focus-over,
    $separator-color-pressed: $color-pressed,
    $separator-color-pressed-over: $color-pressed-over,
    $separator-color-focus-pressed: $color-focus-pressed,
    
    $inner-border-width-focus-over: null,
    $inner-border-color-focus-over: null
) {
    @mixin separator($divider-color, $ui: $ui) {
        @if $divider-color != null {
            .#{$prefix}btn-wrap-#{$ui} {
                // Right side separator line color
                &.#{$prefix}btn-split-right > .#{$prefix}btn-button:after {
                    border-right-color: $divider-color;
                    
                    content: '';
                }
                
                // Bottom separator line color
                &.#{$prefix}btn-split-bottom > .#{$prefix}btn-button:after {
                    border-bottom-color: $divider-color;
                    
                    content: '';
                }
            }
        }
    }
    
    @mixin left-side($background-color: null, $color: null, $divider-color: null, $ui: $ui) {
        @if $background-color != null or $color != null or $divider-color != null {
            .#{$prefix}btn-wrap-#{$ui} {
                // Left side background color
                @if @background-color != null {
                    &.#{$prefix}btn-split:before {
                        background-color: $background-color;
                    }
                }
                
                @if $color != null {
                    // Icon text color
                    .#{$prefix}btn-icon-el-#{$ui} {
                        color: $color;
                    }
                    
                    // Button text color
                    .#{$prefix}btn-inner-#{$ui} {
                        color: $color;
                    }
                }
                
                @if $divider-color != null {
                    @include separator($divider-color);
                }
            }
        }
    }
    
    @mixin right-side($background-color: null, $color: null, $divider-color: null, $ui: $ui) {
        @if $background-color != null or $color != null or $divider-color != null {
            .#{$prefix}btn-wrap-#{$ui} {
                // Right arrow icon color
                @if $color != null {
                    &.#{$prefix}btn-split:after {
                        color: $color;
                    }
                }
                
                @if $background-color != null {
                    // Right arrow background color
                    &.#{$prefix}btn-split-right + .#{$prefix}btn-arrow-el:before {
                        background-color: $background-color;
                    }
                    
                    // Bottom arrow background color
                    &.#{$prefix}btn-split-bottom:after {
                        background-color: $background-color;
                    }
                }
                
                @if $divider-color != null {
                    @include separator($divider-color);
                }
            }
        }
    }
    
    @mixin left-focus-frame(
        $focus-frame-width: $inner-border-width-focus-over,
        $focus-frame-color: $inner-border-color-focus-over,
        $ui: $ui
    ) {
        @if $focus-frame-width != null {
            .#{$prefix}btn-wrap-#{$ui} {
                // Left side focus frame
                &.#{$prefix}btn-split:before {
                    @include inner-border($focus-frame-width, $focus-frame-color);
                }
            }
        }
    }
    
    @mixin right-focus-frame(
        $focus-frame-width: $inner-border-width-focus-over,
        $focus-frame-color: $inner-border-color-focus-over,
        $ui: $ui
    ) {
        @if $focus-frame-width != null {
            .#{$prefix}btn-wrap-#{$ui} {
                &.#{$prefix}btn-split-right {
                    // Right arrow focus border
                    & + .#{$prefix}btn-arrow-el:before {
                        @include inner-border($focus-frame-width, $focus-frame-color);
                    }
                }
                
                &.#{$prefix}btn-split-bottom {
                    // Bottom arrow focus frame
                    &:after {
                        @include inner-border($focus-frame-width, $focus-frame-color);
                    }
                }
            }
        }
    }
    
    .#{$prefix}split-button.#{$prefix}btn-#{$ui} {
        // Reset default states
        @if $background-color != null {
            background-color: $background-color;
            
            &.#{$prefix}btn-pressed, &.#{$prefix}btn-menu-active {
                background-color: $background-color;
            }
            
            .#{$prefix}keyboard-mode &.#{$prefix}btn-focus {
                background-color: $background-color;
                @include inner-border(null, null);
            }
        }
        
        .#{$prefix}keyboard-mode &.#{$prefix}arrow-focus {
            .#{$prefix}btn-arrow-el {
                border-width: 0;
            }
        }
        
        .#{$prefix}btn-wrap-#{$ui} {
            &.#{$prefix}btn-split-right {
                $split-pseudo-width: $split-width + right($padding);
                
                &:before {
                    right: $split-pseudo-width + $split-line-width;
                    background-color: transparent;
                }
                
                & + .#{$prefix}btn-arrow-el{
                    right: $split-pseudo-width;
                    
                    &:before {
                        right: -$split-pseudo-width;
                        width: $split-pseudo-width;
                    }
                }
                
                .#{$prefix}btn-button:before {
                    width: $split-pseudo-width;
                    right: -$split-pseudo-width;
                }
            }
            
            &.#{$prefix}btn-split-bottom:before {
                bottom: $split-height + $split-line-width;
                background-color: transparent;
            }
            
            &.#{$prefix}btn-split-bottom:after {
                background-color: transparent;
                margin-left: -(left($padding));
                margin-right: -(right($padding));
            }
            
            &.#{$prefix}btn-split:after {
                color: $color;
            }
            
            .#{$prefix}btn-inner-#{$ui} {
                color: $color;
            }
            
            .#{$prefix}btn-icon-el-#{$ui} {
                color: $color;
            }
            
            .#{$prefix}btn-button {
                &.#{$prefix}btn-icon-top,
                &.#{$prefix}btn-icon-bottom {
                    .#{$prefix}ie10p & {
                        overflow: visible;
                    }
                }
            }
        }
        
        // Left side states
        &.#{$prefix}btn-over:not(.#{$prefix}arrow-over) {
            @include left-side($background-color-over, $color-over, $separator-color-over);
        }
        
        &.#{$prefix}btn-menu-active {
            @include left-side($background-color, $color, $separator-color);
        }
        
        &.#{$prefix}btn-pressed {
            @include left-side($background-color-pressed, $color-pressed, $separator-color-pressed);
            
            &.#{$prefix}btn-over:not(.#{$prefix}arrow-over) {
                @include left-side(
                    $background-color-pressed-over,
                    $color-pressed-over,
                    $separator-color-pressed-over
                );
            }
        }
        
        .#{$prefix}keyboard-mode &.#{$prefix}btn-focus {
            @include left-side($background-color-focus, $color-focus, $separator-color-focus);
            
            &.#{$prefix}btn-pressed {
                @include left-side(
                    $background-color-focus-pressed,
                    $color-focus-pressed,
                    $separator-color-focus-pressed
                );
            }
            
            &.#{$prefix}btn-over:not(.#{$prefix}arrow-over) {
                @include separator(transparent);
                @include left-focus-frame;
            }
        }
        
        // Right side states
        &.#{$prefix}btn-over.#{$prefix}arrow-over {
            @include right-side($background-color-over, $color-over);
        }
        
        &.#{$prefix}btn-menu-active,
        &.#{$prefix}arrow-pressed {
            @include right-side($background-color-pressed, $color-pressed);
            
            &.#{$prefix}btn-over.#{$prefix}arrow-over {
                @include right-side($background-color-pressed-over, $color-pressed-over);
            }
        }
        
        &.#{$prefix}btn-menu-active {
            @include separator(transparent);
        }
        
        .#{$prefix}keyboard-mode &.#{$prefix}arrow-focus {
            @include right-side($background-color-focus, $color-focus);
            
            &.#{$prefix}btn-menu-active,
            &.#{$prefix}arrow-pressed {
                @include right-side($background-color-focus-pressed, $color-focus-pressed);
            }
            
            &.#{$prefix}btn-pressed {
                @include separator(transparent);
            }
            
            &.#{$prefix}btn-over.#{$prefix}arrow-over {
                @include separator(transparent);
                @include right-focus-frame;
            }
        }
    }
}