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// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import * as Common from '../common/common.js';  // eslint-disable-line no-unused-vars
import {createTextButton} from './UIUtils.js';
import {createShadowRootWithCoreStyles} from './utils/create-shadow-root-with-core-styles.js';
import {Widget} from './Widget.js';  // eslint-disable-line no-unused-vars

/**
 * @unrestricted
 */
export class Infobar {
  /**
   * @param {!Type} type
   * @param {string} text
   * @param {!Array=} actions
   * @param {!Common.Settings.Setting=} disableSetting
   */
  constructor(type, text, actions, disableSetting) {
    this.element = createElementWithClass('div', 'flex-none');
    this._shadowRoot = createShadowRootWithCoreStyles(this.element, 'ui/infobar.css');
    this._contentElement = this._shadowRoot.createChild('div', 'infobar infobar-' + type);

    this._mainRow = this._contentElement.createChild('div', 'infobar-main-row');
    this._detailsRows = this._contentElement.createChild('div', 'infobar-details-rows hidden');

    this._infoContainer = this._mainRow.createChild('div', 'infobar-info-container');

    this._infoMessage = this._infoContainer.createChild('div', 'infobar-info-message');
    this._infoMessage.createChild('div', type + '-icon icon');
    this._infoText = this._infoMessage.createChild('div', 'infobar-info-text');
    this._infoText.textContent = text;
    UI.ARIAUtils.markAsAlert(this._infoText);

    this._actionContainer = this._infoContainer.createChild('div', 'infobar-info-actions');
    if (actions) {
      for (const action of actions) {
        const actionCallback = this._actionCallbackFactory(action);
        let buttonClass = 'infobar-button';
        if (action.highlight) {
          buttonClass += ' primary-button';
        }

        const button = createTextButton(action.text, actionCallback, buttonClass);
        this._actionContainer.appendChild(button);
      }
    }

    /** @type {?Common.Settings.Setting} */
    this._disableSetting = disableSetting || null;
    if (disableSetting) {
      const disableButton = createTextButton(ls`Don't show again`, this._onDisable.bind(this), 'infobar-button');
      this._actionContainer.appendChild(disableButton);
    }

    this._closeContainer = this._mainRow.createChild('div', 'infobar-close-container');
    this._toggleElement =
        createTextButton(ls`Learn more`, this._onToggleDetails.bind(this), 'link-style devtools-link hidden');
    this._closeContainer.appendChild(this._toggleElement);
    this._closeButton = this._closeContainer.createChild('div', 'close-button', 'dt-close-button');
    this._closeButton.setTabbable(true);
    UI.ARIAUtils.setDescription(this._closeButton, ls`Close`);
    self.onInvokeElement(this._closeButton, this.dispose.bind(this));

    this._contentElement.tabIndex = 0;
    UI.ARIAUtils.setAccessibleName(this._contentElement, text);
    this._contentElement.addEventListener('keydown', event => {
      if (event.keyCode === UI.KeyboardShortcut.Keys.Esc.code) {
        this.dispose();
        event.consume();
        return;
      }

      if (event.target !== this._contentElement) {
        return;
      }

      if (event.key === 'Enter') {
        this._onToggleDetails();
        event.consume();
        return;
      }
    });

    /** @type {?function()} */
    this._closeCallback = null;
  }

  /**
   * @param {!Type} type
   * @param {string} text
   * @param {!Array=} actions
   * @param {!Common.Settings.Setting=} disableSetting
   * @return {?Infobar}
   */
  static create(type, text, actions, disableSetting) {
    if (disableSetting && disableSetting.get()) {
      return null;
    }
    return new Infobar(type, text, actions, disableSetting);
  }

  dispose() {
    this.element.remove();
    this._onResize();
    if (this._closeCallback) {
      this._closeCallback.call(null);
    }
  }

  /**
   * @param {string} text
   */
  setText(text) {
    this._infoText.textContent = text;
    this._onResize();
  }

  /**
   * @param {?function()} callback
   */
  setCloseCallback(callback) {
    this._closeCallback = callback;
  }

  /**
   * @param {!Widget} parentView
   */
  setParentView(parentView) {
    this._parentView = parentView;
  }

  /**
   * @param {!InfobarAction} action
   * @returns {!function()}
   */
  _actionCallbackFactory(action) {
    if (!action.delegate) {
      return action.dismiss ? this.dispose.bind(this) : () => {};
    }

    if (!action.dismiss) {
      return action.delegate;
    }

    return (() => {
             action.delegate();
             this.dispose();
           })
        .bind(this);
  }

  _onResize() {
    if (this._parentView) {
      this._parentView.doResize();
    }
  }

  _onDisable() {
    this._disableSetting.set(true);
    this.dispose();
  }

  _onToggleDetails() {
    this._detailsRows.classList.remove('hidden');
    this._toggleElement.remove();
    this._onResize();
  }

  /**
   * @param {string=} message
   * @return {!Element}
   */
  createDetailsRowMessage(message) {
    this._toggleElement.classList.remove('hidden');
    const infobarDetailsRow = this._detailsRows.createChild('div', 'infobar-details-row');
    const detailsRowMessage = infobarDetailsRow.createChild('span', 'infobar-row-message');
    detailsRowMessage.textContent = message || '';
    return detailsRowMessage;
  }
}

/** @typedef {{
 *        text: !string,
 *        highlight: !boolean,
 *        delegate: ?function(),
 *        dismiss: !boolean
 * }}
 */
export let InfobarAction;

/** @enum {string} */
export const Type = {
  Warning: 'warning',
  Info: 'info'
};