/*
 * Copyright (c) 2010, 2023 BSI Business Systems Integration AG
 *
 * This program and the accompanying materials are made
 * available under the terms of the Eclipse Public License 2.0
 * which is available at https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 */
@switch-transition-duration: 250ms;
@switch-transition-duration-fast: 150ms;

.switch {
  --label-color: @text-color;
  --label-disabled-color: @text-disabled-color;

  --width: 36px;
  --height: 22px;
  --transition: none;
  --border-radius: 11px;
  --padding: 0px; // allows increasing the "active" mouse area
  --padding-x: var(--padding);
  --padding-y: var(--padding);
  --background-color: @switch-background-color;
  --border-color: @switch-border-color;
  --activated-background-color: @switch-activated-background-color;
  --activated-border-color: transparent;
  --disabled-background-color: @switch-disabled-background-color;
  --disabled-border-color: @switch-disabled-border-color;
  --disabled-activated-background-color: @switch-disabled-activated-background-color;
  --disabled-activated-border-color: transparent;

  --handle-size: 16px;
  --handle-top: 2px;
  --handle-left: 2px;
  --handle-left-activated: calc(var(--width) - 2px - var(--handle-size) - var(--handle-left)); // button-width - button-border-horizontal - handle-width - handle-margin-right
  --handle-left-transition-duration: @switch-transition-duration;
  --handle-border-radius: none;
  --handle-background-color: @switch-handle-background-color;
  --handle-border-color: @switch-handle-border-color;
  --handle-activated-background-color: var(--handle-background-color);
  --handle-activated-border-color: var(--handle-border-color);
  --handle-disabled-background-color: @switch-handle-disabled-background-color;
  --handle-disabled-border-color: @switch-handle-disabled-border-color;
  --handle-disabled-activated-background-color: var(--handle-disabled-background-color);
  --handle-disabled-activated-border-color: var(--handle-disabled-border-color);

  --icon-content: @icon-remove-bold;
  --icon-font-size: 9px;
  --icon-activated-content: @icon-checked-bold;
  --icon-activated-font-size: 8px;
  --icon-color: @switch-icon-color;
  --icon-activated-color: @switch-icon-activated-color;
  --icon-disabled-color: @switch-icon-disabled-color;
  --icon-disabled-activated-color: @switch-icon-disabled-activated-color;

  position: relative;
  display: flex;
  align-items: center;
  min-height: calc(max(var(--height), var(--handle-size)) + (2 * var(--padding-y)));
  min-width: calc(var(--width) + (2 * var(--padding-x)));
  padding: var(--padding-y) var(--padding-x);
  outline: none;

  &:not(.disabled) {
    cursor: pointer;
  }
}

.switch-label {
  margin-right: 8px;
  color: var(--label-color);

  .disabled > & {
    color: var(--label-disabled-color);
  }
}

.switch-button {
  position: relative;
  width: var(--width);
  height: var(--height);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background-color: var(--background-color);
  transition: var(--transition);

  // Handle
  &:before {
    content: '';
    position: absolute;
    height: var(--handle-size);
    width: var(--handle-size);
    border-radius: 50%;
    top: var(--handle-top);
    left: var(--handle-left);
    transition: left var(--handle-left-transition-duration);
    border: 1px solid var(--handle-border-color);
    background-color: var(--handle-background-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--icon-color);
    font-size: var(--icon-font-size);
  }

  &.activated {
    background-color: var(--activated-background-color);
    border-color: var(--activated-border-color);

    &:before {
      left: var(--handle-left-activated);
      background-color: var(--handle-activated-background-color);
      border-color: var(--handle-activated-border-color);
      color: var(--icon-activated-color);
      font-size: var(--icon-activated-font-size);
    }
  }

  .disabled > & {
    background-color: var(--disabled-background-color);
    border-color: var(--disabled-border-color);

    &::before {
      background-color: var(--handle-disabled-background-color);
      border-color: var(--handle-disabled-border-color);
      color: var(--icon-disabled-color);
    }

    &.activated {
      background-color: var(--disabled-activated-background-color);
      border-color: var(--disabled-activated-border-color);

      &::before {
        background-color: var(--handle-disabled-activated-background-color);
        border-color: var(--handle-disabled-activated-border-color);
        color: var(--icon-disabled-activated-color);
      }
    }
  }

  &.icon-visible {

    &::before {
      #scout.font-icon();
      content: var(--icon-content);
    }

    &.activated::before {
      content: var(--icon-activated-content);
    }
  }
}

.switch.style-default {
  --handle-border-color: transparent;
  --handle-activated-background-color: @switch-style-default-handle-activated-background-color;
  --handle-disabled-background-color: transparent;
  --handle-disabled-activated-background-color: @background-color;
  --handle-disabled-activated-border-color: transparent;
  --icon-disabled-color: @icon-disabled-color;
  --icon-activated-color: @switch-activated-background-color;
  --icon-disabled-activated-color: @switch-disabled-activated-background-color;

  &:focus > .switch-button,
  &.focused > .switch-button {
    #scout.focus-border();
  }
}

.switch.style-slider {
  --width: 40px;
  --height: 6px;
  --transition: background-color @switch-transition-duration-fast;
  --border-radius: 3px;
  --handle-size: 18px;
  --handle-top: -7px; // (-1px = draw over button-border)
  --handle-left: -1px; // (-1px = draw over button-border)
  --handle-left-activated: calc(var(--width) - var(--handle-size) - 1px); // button-width - handle-width (-1px = draw over button-border)
  --handle-left-transition-duration: @switch-transition-duration-fast;
  --background-color: @switch-style-slider-background-color;
  --border-color: transparent;
  --disabled-background-color: @switch-style-slider-disabled-background-color;
  --disabled-border-color: transparent;
  --disabled-activated-background-color: @switch-style-slider-disabled-background-color;

  &:not(.disabled) > .switch-button::before {
    #scout.drop-shadow(@y: 1px, @blur: 2px);
  }

  &:focus > .switch-button::before,
  &.focused > .switch-button::before {
    #scout.focus-border();
  }
}