// Copyright (c) Jupyter Development Team.
// Copyright (c) Microsoft Corporation.
// Distributed under the terms of the Modified BSD License.

import { css, ElementStyles } from '@microsoft/fast-element';
import {
  focusVisible,
  forcedColorsStylesheetBehavior,
  FoundationElementTemplate
} from '@microsoft/fast-foundation';
import { SystemColors } from '@microsoft/fast-web-utilities';
import {
  accentFillRest,
  bodyFont,
  controlCornerRadius,
  designUnit,
  focusStrokeOuter,
  focusStrokeWidth,
  foregroundOnAccentActive,
  neutralFillStealthActive,
  neutralFillStealthFocus,
  neutralFillStealthHover,
  neutralFillStealthRest,
  neutralForegroundRest,
  typeRampBaseFontSize,
  typeRampBaseLineHeight
} from '../../design-tokens.js';
import { heightNumber } from '../../styles/index.js';

/**
 * Styles for Picker list item
 * @public
 */
export const pickerListItemStyles: FoundationElementTemplate<ElementStyles> = (
  context,
  definition
) =>
  css`
    :host {
      display: flex;
      align-items: center;
      justify-items: center;
      font-family: ${bodyFont};
      border-radius: calc(${controlCornerRadius} * 1px);
      border: calc(${focusStrokeWidth} * 1px) solid transparent;
      box-sizing: border-box;
      background: ${neutralFillStealthRest};
      color: ${neutralForegroundRest};
      cursor: pointer;
      fill: currentcolor;
      font-size: ${typeRampBaseFontSize};
      height: calc(${heightNumber} * 1px);
      line-height: ${typeRampBaseLineHeight};
      outline: none;
      overflow: hidden;
      padding: 0 calc(${designUnit} * 2.25px);
      user-select: none;
      white-space: nowrap;
    }

    :host(:hover) {
      background: ${neutralFillStealthHover};
    }

    :host(:active) {
      background: ${neutralFillStealthActive};
    }

    :host(:${focusVisible}) {
      background: ${neutralFillStealthFocus};
      border-color: ${focusStrokeOuter};
    }

    :host([aria-selected='true']) {
      background: ${accentFillRest};
      color: ${foregroundOnAccentActive};
    }
  `.withBehaviors(
    forcedColorsStylesheetBehavior(css`
      :host {
        border-color: transparent;
        forced-color-adjust: none;
        color: ${SystemColors.ButtonText};
        fill: currentcolor;
      }

      :host(:not([aria-selected='true']):hover),
      :host([aria-selected='true']) {
        background: ${SystemColors.Highlight};
        color: ${SystemColors.HighlightText};
      }

      :host([disabled]),
      :host([disabled]:not([aria-selected='true']):hover) {
        background: ${SystemColors.Canvas};
        color: ${SystemColors.GrayText};
        fill: currentcolor;
        opacity: 1;
      }
    `)
  );
