/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

/* eslint-env mozilla/frame-script */
/* eslint no-unused-vars: ["error", {args: "none"}] */
/* global sendAsyncMessage */

var {Services} = ChromeUtils.import("resource://gre/modules/Services.jsm");
var {XPCOMUtils} = ChromeUtils.import("resource://gre/modules/XPCOMUtils.jsm");
var {ActorManagerChild} = ChromeUtils.import("resource://gre/modules/ActorManagerChild.jsm");

ActorManagerChild.attach(this);

ChromeUtils.defineModuleGetter(this, "AutoCompletePopup",
  "resource://gre/modules/AutoCompletePopupContent.jsm");
ChromeUtils.defineModuleGetter(this, "AutoScrollController",
  "resource://gre/modules/AutoScrollController.jsm");

XPCOMUtils.defineLazyServiceGetter(this, "formFill",
                                   "@mozilla.org/satchel/form-fill-controller;1",
                                   "nsIFormFillController");

var global = this;

var AutoScrollListener = {
  handleEvent(event) {
    if (event.isTrusted &
        !event.defaultPrevented &&
        event.button == 1) {
      if (!this._controller) {
        this._controller = new AutoScrollController(global);
      }
      this._controller.handleEvent(event);
    }
  },
};
Services.els.addSystemEventListener(global, "mousedown", AutoScrollListener, true);


let AutoComplete = {
  _connected: false,

  init() {
    addEventListener("unload", this, {once: true});
    addEventListener("DOMContentLoaded", this, {once: true});
    // WebExtension browserAction is preloaded and does not receive DCL, wait
    // on pageshow so we can hookup the formfill controller.
    addEventListener("pageshow", this, {capture: true, once: true});

    XPCOMUtils.defineLazyProxy(this, "popup", () => new AutoCompletePopup(global),
                               {QueryInterface: null});
    this.init = null;
  },

  handleEvent(event) {
    switch (event.type) {
    case "DOMContentLoaded":
    case "pageshow":
      // We need to wait for a content viewer to be available
      // before we can attach our AutoCompletePopup handler,
      // since nsFormFillController assumes one will exist
      // when we call attachToBrowser.
      if (!this._connected) {
        formFill.attachToBrowser(docShell, this.popup);
        this._connected = true;
      }
      break;

    case "unload":
      if (this._connected) {
        formFill.detachFromBrowser(docShell);
        this._connected = false;
      }
      break;
    }
  },
};

AutoComplete.init();