ionic-framework/core/src/components/toggle/toggle.common.scss

@import "./toggle.vars.scss";
@import "../../themes/mixins.scss";

// Toggle
// --------------------------------------------------

:host {
  /**
   * @prop --track-background: Background of the toggle track
   * @prop --track-background-checked: Background of the toggle track when checked
   * @prop --border-radius: Border radius of the toggle track
   *
   * @prop --handle-background: Background of the toggle handle
   * @prop --handle-background-checked: Background of the toggle handle when checked
   *
   * @prop --handle-border-radius: Border radius of the toggle handle
   * @prop --handle-box-shadow: Box shadow of the toggle handle
   * @prop --handle-height: Height of the toggle handle
   * @prop --handle-max-height: Maximum height of the toggle handle
   * @prop --handle-width: Width of the toggle handle
   * @prop --handle-spacing: Horizontal spacing around the toggle handle
   * @prop --handle-transition: Transition of the toggle handle
   */

  /* stylelint-disable-next-line declaration-no-important */
  box-sizing: content-box !important;

  display: inline-block;

  position: relative;

  max-width: 100%;

  outline: none;

  cursor: pointer;
  user-select: none;
}

:host(.in-item) {
  flex: 1 1 0;

  width: 100%;
  height: 100%;
}

/**
 * Toggle can be slotted
 * in components such as item and
 * toolbar which is why we do not
 * limit the below behavior to just ion-item.
 */
:host([slot="start"]),
:host([slot="end"]) {
  // Reset the flex property when the toggle
  // is slotted to avoid growing the element larger
  // than its content.
  flex: initial;

  width: auto;
}

:host(.ion-focused) input {
  border: 2px solid #5e9ed6;
}

:host(.toggle-disabled) {
  pointer-events: none;
}

input {
  @include visually-hidden();
}

// Toggle Wrapper
// --------------------------------------------------

.toggle-wrapper {
  display: flex;

  position: relative;

  flex-grow: 1;

  align-items: center;
  justify-content: space-between;

  height: inherit;

  transition: background-color 15ms linear;

  cursor: inherit;
}

// Input Label
// ----------------------------------------------------------------

/**
 * If no label text is placed into the slot
 * then the element should be hidden otherwise
 * there will be additional margins added.
 */
.label-text-wrapper-hidden {
  display: none;
}

// Toggle Native Wrapper
// ----------------------------------------------------------------

.native-wrapper {
  display: flex;

  align-items: center;
}

// Toggle Justify
// --------------------------------------------------

:host(.toggle-justify-space-between) .toggle-wrapper {
  justify-content: space-between;
}

:host(.toggle-justify-start) .toggle-wrapper {
  justify-content: start;
}

:host(.toggle-justify-end) .toggle-wrapper {
  justify-content: end;
}

// Toggle Align
// --------------------------------------------------

:host(.toggle-alignment-start) .toggle-wrapper {
  align-items: start;
}

:host(.toggle-alignment-center) .toggle-wrapper {
  align-items: center;
}

// Justify Content & Align Items
// ---------------------------------------------

// The toggle should be displayed as block when either justify
// or alignment is set; otherwise, these properties will have no
// visible effect.
:host(.toggle-justify-space-between),
:host(.toggle-justify-start),
:host(.toggle-justify-end),
:host(.toggle-alignment-start),
:host(.toggle-alignment-center) {
  display: block;
}

// Toggle Label Placement - Start
// ----------------------------------------------------------------

/**
 * Label is on the left of the input in LTR and
 * on the right in RTL.
 */
:host(.toggle-label-placement-start) .toggle-wrapper {
  flex-direction: row;
}

// Toggle Label Placement - End
// ----------------------------------------------------------------

/**
 * Label is on the right of the input in LTR and
 * on the left in RTL.
 */
:host(.toggle-label-placement-end) .toggle-wrapper {
  flex-direction: row-reverse;
}

// Toggle Background Track: Unchecked
// --------------------------------------------------

.toggle-icon-wrapper {
  display: flex;

  position: relative;

  align-items: center;

  width: 100%;
  height: 100%;

  transition: var(--handle-transition);

  will-change: transform;
}

.toggle-icon {
  @include border-radius(var(--border-radius));

  display: block;

  position: relative;

  width: 100%;
  height: 100%;

  background: var(--track-background);

  overflow: inherit;
}

// Toggle Background Track: Checked
// ----------------------------------------------------------

:host(.toggle-checked) .toggle-icon {
  background: var(--track-background-checked);
}

// Toggle Inner Knob: Unchecked
// --------------------------------------------------

.toggle-inner {
  @include border-radius(var(--handle-border-radius));

  position: absolute;

  // stylelint-disable-next-line property-disallowed-list
  left: var(--handle-spacing);

  width: var(--handle-width);
  height: var(--handle-height);

  max-height: var(--handle-max-height);

  transition: var(--handle-transition);

  background: var(--handle-background);

  box-shadow: var(--handle-box-shadow);

  contain: strict;
}

/**
 * We do not use the @ltr and @rtl mixins
 * here because ion-toggle uses the Shadow DOM
 * and WebKit does not support :host-context.
 */
:host(.toggle-ltr) .toggle-inner {
  // stylelint-disable-next-line property-disallowed-list
  left: var(--handle-spacing);
}

:host(.toggle-rtl) .toggle-inner {
  // stylelint-disable-next-line property-disallowed-list
  right: var(--handle-spacing);
}

// Toggle Inner Knob: Checked
// ----------------------------------------------------------

:host(.toggle-ltr.toggle-checked) .toggle-icon-wrapper {
  // transform by 100% - handle width
  transform: translate3d(calc(100% - var(--handle-width)), 0, 0);
}

:host(.toggle-rtl.toggle-checked) .toggle-icon-wrapper {
  // transform by -100% + handle width
  transform: translate3d(calc(-100% + var(--handle-width)), 0, 0);
}

:host(.toggle-checked) .toggle-inner {
  background: var(--handle-background-checked);
}

:host(.toggle-ltr.toggle-checked) .toggle-inner {
  // transform by handle spacing amount
  transform: translate3d(calc(var(--handle-spacing) * -2), 0, 0);
}

:host(.toggle-rtl.toggle-checked) .toggle-inner {
  // transform by handle spacing amount
  transform: translate3d(calc(var(--handle-spacing) * 2), 0, 0);
}