[polari] mainWindow: Fix min-width of user-list button

[Florian Müllner <fmuellner src gnome org>]

commit 13c3a9709c7119cfd0edf8c46072cb9d30ba9008
Author: Florian Müllner <fmuellner gnome org>
Date:   Fri Jul 31 18:56:28 2015 +0200

    mainWindow: Fix min-width of user-list button
    
    We currently set a width-request in the .ui file that used to be
    consistent with the width of icon buttons, but the (default) theme
    changed at one point, so this is no longer the case.
    Fix this by setting the width-request to the actually allocated width
    of an actual icon button (the join-menu).

 data/resources/main-window.ui |    2 --
 src/mainWindow.js             |    6 ++++++
 2 files changed, 6 insertions(+), 2 deletions(-)
---
diff --git a/data/resources/main-window.ui b/data/resources/main-window.ui
index 21dbc2b..f4fade2 100644
--- a/data/resources/main-window.ui
+++ b/data/resources/main-window.ui
@@ -162,8 +162,6 @@
                 <property name="can_focus">True</property>
                 <property name="focus_on_click">False</property>
                 <property name="action_name">app.user-list</property>
-                <!-- be at least as wide as icon buttons - 16px + padding -->
-                <property name="width-request">32</property>
                 <style>
                   <class name="polari-user-list-button"/>
                   <class name="text-button"/>
diff --git a/src/mainWindow.js b/src/mainWindow.js
index cc7b730..f53e483 100644
--- a/src/mainWindow.js
+++ b/src/mainWindow.js
@@ -218,6 +218,12 @@ const MainWindow = new Lang.Class({
         this._showUserListButton = builder.get_object('show_user_list_button');
         this._revealer = builder.get_object('room_list_revealer');
 
+        // Make sure user-list button is at least as wide as icon buttons
+        this._joinMenuButton.connect('size-allocate', Lang.bind(this,
+            function(w, rect) {
+                this._showUserListButton.width_request = rect.width;
+            }));
+
         let scroll = builder.get_object('room_list_scrollview');
         this._roomList = new RoomList.RoomList();
         scroll.add(this._roomList.widget);