"use strict";

var _interopRequireDefault = require("@babel/runtime/helpers/interopRequireDefault");
Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.Placeholder = Placeholder;
exports.default = void 0;
var _react = require("react");
var _classnames = _interopRequireDefault(require("classnames"));
var _compose = require("@wordpress/compose");
var _primitives = require("@wordpress/primitives");
var _element = require("@wordpress/element");
var _a11y = require("@wordpress/a11y");
var _icon = _interopRequireDefault(require("../icon"));
/**
 * External dependencies
 */

/**
 * WordPress dependencies
 */

/**
 * Internal dependencies
 */

const PlaceholderIllustration = (0, _react.createElement)(_primitives.SVG, {
  className: "components-placeholder__illustration",
  fill: "none",
  xmlns: "http://www.w3.org/2000/svg",
  viewBox: "0 0 60 60",
  preserveAspectRatio: "none"
}, (0, _react.createElement)(_primitives.Path, {
  vectorEffect: "non-scaling-stroke",
  d: "M60 60 0 0"
}));

/**
 * Renders a placeholder. Normally used by blocks to render their empty state.
 *
 * ```jsx
 * import { Placeholder } from '@wordpress/components';
 * import { more } from '@wordpress/icons';
 *
 * const MyPlaceholder = () => <Placeholder icon={ more } label="Placeholder" />;
 * ```
 */
function Placeholder(props) {
  const {
    icon,
    children,
    label,
    instructions,
    className,
    notices,
    preview,
    isColumnLayout,
    withIllustration,
    ...additionalProps
  } = props;
  const [resizeListener, {
    width
  }] = (0, _compose.useResizeObserver)();

  // Since `useResizeObserver` will report a width of `null` until after the
  // first render, avoid applying any modifier classes until width is known.
  let modifierClassNames;
  if (typeof width === 'number') {
    modifierClassNames = {
      'is-large': width >= 480,
      'is-medium': width >= 160 && width < 480,
      'is-small': width < 160
    };
  }
  const classes = (0, _classnames.default)('components-placeholder', className, modifierClassNames, withIllustration ? 'has-illustration' : null);
  const fieldsetClasses = (0, _classnames.default)('components-placeholder__fieldset', {
    'is-column-layout': isColumnLayout
  });
  (0, _element.useEffect)(() => {
    if (instructions) {
      (0, _a11y.speak)(instructions);
    }
  }, [instructions]);
  return (0, _react.createElement)("div", {
    ...additionalProps,
    className: classes
  }, withIllustration ? PlaceholderIllustration : null, resizeListener, notices, preview && (0, _react.createElement)("div", {
    className: "components-placeholder__preview"
  }, preview), (0, _react.createElement)("div", {
    className: "components-placeholder__label"
  }, (0, _react.createElement)(_icon.default, {
    icon: icon
  }), label), !!instructions && (0, _react.createElement)("div", {
    className: "components-placeholder__instructions"
  }, instructions), (0, _react.createElement)("div", {
    className: fieldsetClasses
  }, children));
}
var _default = Placeholder;
exports.default = _default;
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