[geary/wip/765516-gtk-widget-conversation-viewer: 26/58] Use two different buttons in ConversationMessage to show starred state.

[Michael Gratton <mjog src gnome org>]

commit 8da8aa35092b5572db0e80100aea8ab46267567d
Author: Michael James Gratton <mike vee net>
Date:   Sat Apr 16 15:43:54 2016 +1000

    Use two different buttons in ConversationMessage to show starred state.
    
    Having two buttons means we don't need to change the image and handler
    when clicked, just manage their visbility.
    
    * src/client/conversation-viewer/conversation-message.vala
      (ConversationMessage): Add both a star and unstar template child,
      update their state as the message's state changes.
    
    * ui/conversation-message.ui: Rename flag button to "star", add new
      unstar button.

 .../conversation-viewer/conversation-message.vala  |   40 ++++++++++++-------
 ui/conversation-message.ui                         |   31 ++++++++++++++-
 2 files changed, 53 insertions(+), 18 deletions(-)
---
diff --git a/src/client/conversation-viewer/conversation-message.vala 
b/src/client/conversation-viewer/conversation-message.vala
index 28fff94..afc42d4 100644
--- a/src/client/conversation-viewer/conversation-message.vala
+++ b/src/client/conversation-viewer/conversation-message.vala
@@ -82,7 +82,9 @@ public class ConversationMessage : Gtk.Box {
     [GtkChild]
     private Gtk.Image attachment_icon;
     [GtkChild]
-    private Gtk.Button flag_button;
+    private Gtk.Button star_button;
+    [GtkChild]
+    private Gtk.Button unstar_button;
     [GtkChild]
     private Gtk.MenuButton message_menubutton;
 
@@ -251,7 +253,8 @@ public class ConversationMessage : Gtk.Box {
         header_revealer.set_reveal_child(true);
         header_revealer.set_transition_type(revealer);
 
-        flag_button.set_sensitive(true);
+        star_button.set_sensitive(true);
+        unstar_button.set_sensitive(true);
         message_menubutton.set_sensitive(true);
 
         // XXX this is pretty gross
@@ -268,7 +271,8 @@ public class ConversationMessage : Gtk.Box {
         avatar_image.set_pixel_size(24); // XXX constant
         preview_revealer.set_reveal_child(true);
         header_revealer.set_reveal_child(false);
-        flag_button.set_sensitive(false);
+        star_button.set_sensitive(false);
+        unstar_button.set_sensitive(false);
         message_menubutton.set_sensitive(false);
         body_revealer.set_reveal_child(false);
     }
@@ -369,8 +373,24 @@ public class ConversationMessage : Gtk.Box {
     }
 
     public void update_flags(Geary.Email email) {
-        toggle_class("read");
-        toggle_class("starred");
+        Geary.EmailFlags flags = email.email_flags;
+        Gtk.StyleContext style = get_style_context();
+        
+        if (flags.is_unread()) {
+            style.add_class("geary_unread");
+        } else {
+            style.remove_class("geary_unread");
+        }
+        
+        if (flags.is_flagged()) {
+            style.add_class("geary_starred");
+            star_button.hide();
+            unstar_button.show();
+        } else {
+            style.remove_class("geary_starred");
+            star_button.show();
+            unstar_button.hide();
+        }
         
         //if (email.email_flags.is_outbox_sent()) {
         //  email_warning.set_inner_html(
@@ -1069,16 +1089,6 @@ public class ConversationMessage : Gtk.Box {
     //     return containing_folder.special_folder_type == Geary.SpecialFolderType.DRAFTS;
     // }
 
-    private void toggle_class(string cls) {
-        Gtk.StyleContext context = get_style_context();
-        if (context.has_class(cls)) {
-            context.add_class(cls);
-        } else {
-            context.remove_class(cls);
-        }
-        
-    }
-
     private static bool is_content_type_supported_inline(Geary.Mime.ContentType content_type) {
         foreach (string mime_type in INLINE_MIME_TYPES) {
             try {
diff --git a/ui/conversation-message.ui b/ui/conversation-message.ui
index e88210f..286581a 100644
--- a/ui/conversation-message.ui
+++ b/ui/conversation-message.ui
@@ -406,13 +406,14 @@
               </packing>
             </child>
             <child>
-              <object class="GtkButton" id="flag_button">
+              <object class="GtkButton" id="star_button">
                 <property name="visible">True</property>
                 <property name="sensitive">False</property>
                 <property name="can_focus">True</property>
                 <property name="receives_default">True</property>
-                <property name="tooltip_text" translatable="yes">Toggle this message's flag</property>
+                <property name="tooltip_text" translatable="yes">Mark this message as starred</property>
                 <property name="valign">start</property>
+                <property name="action_name">win.message_star</property>
                 <property name="relief">none</property>
                 <child>
                   <object class="GtkImage">
@@ -429,6 +430,30 @@
               </packing>
             </child>
             <child>
+              <object class="GtkButton" id="unstar_button">
+                <property name="visible">True</property>
+                <property name="sensitive">False</property>
+                <property name="can_focus">True</property>
+                <property name="receives_default">True</property>
+                <property name="tooltip_text" translatable="yes">Mark this message as not starred</property>
+                <property name="valign">start</property>
+                <property name="action_name">win.message_unstar</property>
+                <property name="relief">none</property>
+                <child>
+                  <object class="GtkImage">
+                    <property name="visible">True</property>
+                    <property name="can_focus">False</property>
+                    <property name="icon_name">starred-symbolic</property>
+                  </object>
+                </child>
+              </object>
+              <packing>
+                <property name="expand">False</property>
+                <property name="fill">True</property>
+                <property name="position">2</property>
+              </packing>
+            </child>
+            <child>
               <object class="GtkMenuButton" id="message_menubutton">
                 <property name="visible">True</property>
                 <property name="sensitive">False</property>
@@ -448,7 +473,7 @@
               <packing>
                 <property name="expand">False</property>
                 <property name="fill">False</property>
-                <property name="position">2</property>
+                <property name="position">3</property>
               </packing>
             </child>
           </object>