[polari/wip/fmuellner/misc-cleanups: 3/11] accountsMonitor: Add enabledAccounts convenience getter

[Florian Müllner <fmuellner src gnome org>]

commit f591f9cdb4c9304a24f435272f9ab4b185532a6f
Author: Florian Müllner <fmuellner gnome org>
Date:   Thu Aug 4 01:53:24 2016 +0200

    accountsMonitor: Add enabledAccounts convenience getter
    
    It is common enough to filter out disabled accounts to add a convenience
    getter function that takes care of the filtering.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=769582

 src/accountsMonitor.js |    4 ++++
 src/application.js     |    5 +----
 src/joinDialog.js      |    9 +++------
 src/mainWindow.js      |   11 ++++-------
 4 files changed, 12 insertions(+), 17 deletions(-)
---
diff --git a/src/accountsMonitor.js b/src/accountsMonitor.js
index 71ecb9c..6e466d5 100644
--- a/src/accountsMonitor.js
+++ b/src/accountsMonitor.js
@@ -37,6 +37,10 @@ const AccountsMonitor = new Lang.Class({
         return [...this._accounts.values()];
     },
 
+    get enabledAccounts() {
+        return [...this._accounts.values()].filter(a => a.enabled);
+    },
+
     get accountManager() {
         return this._accountManager;
     },
diff --git a/src/application.js b/src/application.js
index 6254fbc..2968589 100644
--- a/src/application.js
+++ b/src/application.js
@@ -177,10 +177,7 @@ const Application = new Lang.Class({
     _openURIs: function(uris, time) {
         let map = {};
 
-        this._accountsMonitor.accounts.forEach(function(a) {
-            if (!a.enabled)
-                return;
-
+        this._accountsMonitor.enabledAccounts.forEach(a => {
             let params = a.dup_parameters_vardict().deep_unpack();
             map[a.get_object_path()] = {
                 server: params.server.deep_unpack(),
diff --git a/src/joinDialog.js b/src/joinDialog.js
index 6e23c2a..9e6e2b4 100644
--- a/src/joinDialog.js
+++ b/src/joinDialog.js
@@ -61,12 +61,9 @@ const JoinDialog = new Lang.Class({
         this._roomManager = ChatroomManager.getDefault();
 
         this._accounts = {};
-        this._accountsMonitor.accounts.forEach(Lang.bind(this,
-            function(a) {
-                if (!a.enabled)
-                    return;
-                this._accounts[a.display_name] = a;
-            }));
+        this._accountsMonitor.enabledAccounts.forEach(a => {
+            this._accounts[a.display_name] = a;
+        });
         this._accountAddedId =
             this._accountsMonitor.connect('account-added', Lang.bind(this,
                 function(am, account) {
diff --git a/src/mainWindow.js b/src/mainWindow.js
index 5fca499..5ecdb3d 100644
--- a/src/mainWindow.js
+++ b/src/mainWindow.js
@@ -154,13 +154,10 @@ const MainWindow = new Lang.Class({
             }));
 
         this._accountsMonitor = AccountsMonitor.getDefault();
-        this._accountsMonitor.connect('accounts-changed', Lang.bind(this,
-            function(am) {
-                let accounts = am.accounts;
-                this._roomListRevealer.reveal_child = accounts.some(function(a) {
-                    return a.enabled;
-                });
-            }));
+        this._accountsMonitor.connect('accounts-changed', () => {
+            let hasAccounts = this._accountsMonitor.enabledAccounts.length > 0;
+            this._roomListRevealer.reveal_child = hasAccounts;
+        });
 
         this._roomManager = ChatroomManager.getDefault();
         this._roomManager.connect('active-changed',