[polari] userDetails: Add offline support

[Rares Visalom <raresvisalom src gnome org>]

commit 4cc318edc19fbb4983031c550575b13f0f0745a7
Author: raresv <rares visalom gmail com>
Date:   Wed Sep 7 23:27:08 2016 +0300

    userDetails: Add offline support
    
    Currently the details have a fixed associated TpContact, which is
    fine in the case of the user list where rows represent a particular
    nickname and are destroyed when that nickname leaves the room.
    However when we expose the details in the chat log, nicks are grouped
    together by basenick and may be either on- or offline, so allow changing
    and unsetting that property, and add a nickname property that is used
    as fallback when no contact is available.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=760853

 src/userList.js |   79 ++++++++++++++++++++++++++++++++++++++++++++++--------
 1 files changed, 67 insertions(+), 12 deletions(-)
---
diff --git a/src/userList.js b/src/userList.js
index d32ce28..0c5d90b 100644
--- a/src/userList.js
+++ b/src/userList.js
@@ -118,22 +118,55 @@ const UserDetails = new Lang.Class({
                                                         READWRITE,
                                                         false)},
 
-    _init: function(params) {
-        this._user = params.user;
+    _init: function(params = {}) {
+        let user = params.user;
         delete params.user;
 
         this._expanded = false;
+        this._initialDetailsLoaded = false;
 
         this.parent(params);
 
+        this.user = user;
+
         this._messageButton.connect('clicked',
-                                    Lang.bind(this, this._onButtonClicked));
-        this._user.connection.connect('notify::self-contact',
-                                      Lang.bind(this, this._updateButtonVisibility));
+                                    Lang.bind(this, this._onMessageButtonClicked));
+
         this._updateButtonVisibility();
         this._detailsGrid.hide();
     },
 
+    set user(user) {
+        if (this._user == user)
+            return;
+
+        if (this._user)
+            this._user.connection.disconnect(this._selfContactChangedId);
+        this._selfContactChangedId = 0;
+
+        this._user = user;
+
+        if (this._user)
+            this._selfContactChangedId = this._user.connection.connect('notify::self-contact',
+                                                    Lang.bind(this, this._updateButtonVisibility));
+
+        if (this.expanded)
+            this._expand();
+
+        this._updateButtonVisibility();
+        this._lastLabel.visible = this._user != null;
+    },
+
+    set nickname(nickname) {
+        this._nickname = nickname;
+
+        if (!this._fullnameLabel.label)
+            this._fullnameLabel.label = this._nickname || '';
+
+
+        this._updateButtonVisibility();
+    },
+
     get expanded() {
         return this._expanded;
     },
@@ -153,14 +186,18 @@ const UserDetails = new Lang.Class({
     },
 
     _expand: function() {
-        let prevDetails = this._fullnameLabel.label != '';
-        this._detailsGrid.visible = prevDetails;
-        this._spinnerBox.visible = !prevDetails;
+        this._detailsGrid.visible = this._initialDetailsLoaded;
+        this._spinnerBox.visible = !this._initialDetailsLoaded;
         this._spinner.start();
 
         this._cancellable = new Gio.Cancellable();
-        this._user.request_contact_info_async(this._cancellable,
+
+        if (this._user)
+            this._user.request_contact_info_async(this._cancellable,
                                               Lang.bind(this, this._onContactInfoReady));
+        //TODO: else use this._nickname to query tracker
+        else
+            this._revealDetails();
     },
 
     _unexpand: function() {
@@ -202,6 +239,8 @@ const UserDetails = new Lang.Class({
     },
 
     _onContactInfoReady: function(c, res) {
+        this._initialDetailsLoaded = true;
+
         let fn, last;
         let info = this._user.get_contact_info();
         for (let i = 0; i < info.length; i++) {
@@ -223,12 +262,16 @@ const UserDetails = new Lang.Class({
             this._lastLabel.hide();
         }
 
+        this._revealDetails();
+    },
+
+    _revealDetails: function() {
         this._spinner.stop();
         this._spinnerBox.hide();
         this._detailsGrid.show();
     },
 
-    _onButtonClicked: function() {
+    _onMessageButtonClicked: function() {
         let account = this._user.connection.get_account();
 
         let app = Gio.Application.get_default();
@@ -242,8 +285,19 @@ const UserDetails = new Lang.Class({
     },
 
     _updateButtonVisibility: function() {
-        let visible = this._user != this._user.connection.self_contact;
-        this._messageButton.visible = visible;
+        if (!this._user) {
+            this._messageButton.sensitive = false;
+
+            return;
+        }
+
+        if (this._user == this._user.connection.self_contact) {
+            this._messageButton.visible = false;
+            this._messageButton.sensitive = true;
+        } else {
+            this._messageButton.visible = true;
+            this._messageButton.sensitive = true;
+        }
     }
 });
 
@@ -310,6 +364,7 @@ const UserListRow = new Lang.Class({
             return;
 
         let details = new UserDetails({ user: this._user });
+
         this._revealer.bind_property('reveal-child', details, 'expanded', 0);
 
         this._revealer.add(details);