Bug 1494615 - Remove concept of availableAddons in WebIDE;r=ladybenko

There is only one addon to manage in WebIDe, removing the concept
of available addons will make it easier to move the ADBAddon module to a
shared folder.

Differential Revision: https://phabricator.services.mozilla.com/D7402

--HG--
extra : moz-landing-system : lando

devtools/client/aboutdebugging-new/src/modules/usb-runtimes.js

@@ -5,7 +5,7 @@
 "use strict";
 
 const { ADBScanner } = require("devtools/shared/adb/adb-scanner");
-const { GetAvailableAddons } = require("devtools/client/webide/modules/addons");
+const { getADBAddon } = require("devtools/client/webide/modules/addons");
 
 /**
  * This module provides a collection of helper methods to detect USB runtimes whom Firefox
@@ -22,8 +22,8 @@ function disableUSBRuntimes() {
 exports.disableUSBRuntimes = disableUSBRuntimes;
 
 async function enableUSBRuntimes() {
-  const { adb } = GetAvailableAddons();
-  if (adb.status !== "installed") {
+  const adbAddon = getADBAddon();
+  if (adbAddon.status !== "installed") {
     console.error("ADB extension is not installed");
     return;
   }

devtools/client/webide/content/addons.js

@@ -5,7 +5,7 @@
 const {require} = ChromeUtils.import("resource://devtools/shared/Loader.jsm", {});
 const Services = require("Services");
 const {gDevTools} = require("devtools/client/framework/devtools");
-const {GetAvailableAddons, ForgetAddonsList} = require("devtools/client/webide/modules/addons");
+const {getADBAddon, forgetADBAddon} = require("devtools/client/webide/modules/addons");
 const Strings = Services.strings.createBundle("chrome://devtools/locale/webide.properties");
 const {ADBScanner} = require("devtools/shared/adb/adb-scanner");
 const {RuntimeScanners} = require("devtools/client/webide/modules/runtimes");
@@ -18,22 +18,20 @@ window.addEventListener("load", function() {
     }
   };
   document.querySelector("#close").onclick = CloseUI;
-  BuildUI(GetAvailableAddons());
+  BuildUI();
 }, {capture: true, once: true});
 
 window.addEventListener("unload", function() {
-  ForgetAddonsList();
+  forgetADBAddon();
 }, {capture: true, once: true});
 
 function CloseUI() {
   window.parent.UI.openProject();
 }
 
-function BuildUI(addons) {
-  BuildItem(addons.adb, "adb");
-}
+function BuildUI() {
+  const addon = getADBAddon();
 
-function BuildItem(addon, type) {
   function onAddonUpdate(arg) {
     progress.removeAttribute("value");
     li.setAttribute("status", addon.status);
@@ -73,12 +71,8 @@ function BuildItem(addon, type) {
   const name = document.createElement("span");
   name.className = "name";
 
-  switch (type) {
-    case "adb":
-      li.setAttribute("addon", type);
-      name.textContent = "ADB Extension";
-      break;
-  }
+  li.setAttribute("addon", "adb");
+  name.textContent = "ADB Extension";
 
   li.appendChild(name);
 
@@ -102,12 +96,10 @@ function BuildItem(addon, type) {
   const progress = document.createElement("progress");
   li.appendChild(progress);
 
-  if (type == "adb") {
-    const warning = document.createElement("p");
-    warning.textContent = Strings.GetStringFromName("addons_adb_warning");
-    warning.className = "warning";
-    li.appendChild(warning);
-  }
+  const warning = document.createElement("p");
+  warning.textContent = Strings.GetStringFromName("addons_adb_warning");
+  warning.className = "warning";
+  li.appendChild(warning);
 
   document.querySelector("ul").appendChild(li);
 }

devtools/client/webide/content/webide.js

@@ -16,7 +16,7 @@ const {Connection} = require("devtools/shared/client/connection-manager");
 const {AppManager} = require("devtools/client/webide/modules/app-manager");
 const EventEmitter = require("devtools/shared/event-emitter");
 const promise = require("promise");
-const {GetAvailableAddons} = require("devtools/client/webide/modules/addons");
+const {getADBAddon} = require("devtools/client/webide/modules/addons");
 const {getJSON} = require("devtools/client/shared/getjson");
 const Telemetry = require("devtools/client/shared/telemetry");
 const {RuntimeScanners} = require("devtools/client/webide/modules/runtimes");
@@ -86,8 +86,8 @@ var UI = {
     // If the user decides to uninstall any of this addon, we won't install it again.
     const autoinstallADBExtension = Services.prefs.getBoolPref("devtools.webide.autoinstallADBExtension");
     if (autoinstallADBExtension) {
-      const addons = GetAvailableAddons();
-      addons.adb.install();
+      const adbAddon = getADBAddon();
+      adbAddon.install();
     }
 
     Services.prefs.setBoolPref("devtools.webide.autoinstallADBExtension", false);

devtools/client/webide/modules/addons.js

@@ -34,23 +34,20 @@ addonsListener.onEnabled =
 addonsListener.onDisabled =
 addonsListener.onInstalled =
 addonsListener.onUninstalled = (updatedAddon) => {
-  const addons = GetAvailableAddons();
-  addons.adb.updateInstallStatus();
+  getADBAddon().updateInstallStatus();
 };
 AddonManager.addAddonListener(addonsListener);
 
-var AvailableAddons = null;
-var GetAvailableAddons = exports.GetAvailableAddons = function() {
-  if (!AvailableAddons) {
-    AvailableAddons = {
-      adb: new ADBAddon()
-    };
+var adbAddon = null;
+var getADBAddon = exports.getADBAddon = function() {
+  if (!adbAddon) {
+    adbAddon = new ADBAddon();
   }
-  return AvailableAddons;
+  return adbAddon;
 };
 
-exports.ForgetAddonsList = function() {
-  AvailableAddons = null;
+exports.forgetADBAddon = function() {
+  adbAddon = null;
 };
 
 function ADBAddon() {