[geary/wip/765516-gtk-widget-conversation-viewer: 163/174] Remove blacklisting from ConversationListBox, use a composer signal instead.

[Michael Gratton <mjog src gnome org>]

commit 84fdc4551886c9ba93885646ef93946ec965edec
Author: Michael James Gratton <mike vee net>
Date:   Mon Sep 19 12:20:47 2016 +1000

    Remove blacklisting from ConversationListBox, use a composer signal instead.
    
    * src/client/composer/composer-widget.vala (ComposerWidget): Add
      draft_id_changed signal, emit that when the manager's draft id changes,
      rather than hooking directly into the ConversationListBox.
    
    * src/client/conversation-viewer/conversation-listbox.vala
      (ConversationListBox): Remove blackisting methods, update call sites.

 src/client/application/geary-controller.vala       |    7 +---
 src/client/composer/composer-widget.vala           |   27 +++----------------
 .../conversation-viewer/conversation-listbox.vala  |   22 ----------------
 3 files changed, 7 insertions(+), 49 deletions(-)
---
diff --git a/src/client/application/geary-controller.vala b/src/client/application/geary-controller.vala
index c370cf6..9f5e65d 100644
--- a/src/client/application/geary-controller.vala
+++ b/src/client/application/geary-controller.vala
@@ -2243,17 +2243,14 @@ public class GearyController : Geary.BaseObject {
                     message("Could not load full message: %s", e.message);
                 }
             }
-            
+
             widget = new ComposerWidget(current_account, compose_type, full, quote, is_draft);
             if (is_draft) {
                 yield widget.restore_draft_state_async(current_account);
-                if (conversation_view != null) {
-                    conversation_view.blacklist_by_id(referred.id);
-                }
             }
         }
         widget.show_all();
-        
+
         // We want to keep track of the open composer windows, so we can allow the user to cancel
         // an exit without losing their data.
         composer_widgets.add(widget);
diff --git a/src/client/composer/composer-widget.vala b/src/client/composer/composer-widget.vala
index d686846..0675a66 100644
--- a/src/client/composer/composer-widget.vala
+++ b/src/client/composer/composer-widget.vala
@@ -362,6 +362,10 @@ public class ComposerWidget : Gtk.EventBox {
         get { return (ComposerContainer) parent; }
     }
 
+
+    public signal void draft_id_changed(Geary.EmailIdentifier id);
+
+
     public ComposerWidget(Geary.Account account, ComposeType compose_type,
         Geary.Email? referred = null, string? quote = null, bool is_referred_draft = false) {
         this.account = account;
@@ -521,18 +525,6 @@ public class ComposerWidget : Gtk.EventBox {
         chain.append(this.attachments_box);
         this.composer_container.set_focus_chain(chain);
 
-        // Remind the conversation viewer of draft ids when it
-        // reloads. Need to use the signal handler's viewer instance
-        // to avoid some sort of ref that is preventing the composer
-        // from being finalised when closed.
-        ConversationViewer conversation_viewer =
-            GearyApplication.instance.controller.main_window.conversation_viewer;
-        conversation_viewer.conversation_added.connect((list_view) => {
-                if (this.draft_manager != null) {
-                    list_view.blacklist_by_id(this.draft_manager.current_draft_id);
-                }
-        });
-
         // Don't do this in an overridden version of the destroy
         // method, it somehow ends up in an infinite loop
         destroy.connect(() => { close_draft_manager_async.begin(null); });
@@ -1376,11 +1368,7 @@ public class ComposerWidget : Gtk.EventBox {
     }
 
     private void on_draft_id_changed() {
-        ConversationListBox? list_view =
-            GearyApplication.instance.controller.main_window.conversation_viewer.current_list;
-        if (list_view != null) {
-            list_view.blacklist_by_id(this.draft_manager.current_draft_id);
-        }
+        draft_id_changed(this.draft_manager.current_draft_id);
     }
 
     private void on_draft_manager_fatal(Error err) {
@@ -1480,11 +1468,6 @@ public class ComposerWidget : Gtk.EventBox {
         } catch (Error err) {
             // ignored
         }
-        ConversationListBox? list_view =
-            GearyApplication.instance.controller.main_window.conversation_viewer.current_list;
-        if (this.draft_manager != null && list_view != null) {
-            list_view.unblacklist_by_id(this.draft_manager.current_draft_id);
-        }
         container.close_container();
     }
 
diff --git a/src/client/conversation-viewer/conversation-listbox.vala 
b/src/client/conversation-viewer/conversation-listbox.vala
index b1a365d..b342f61 100644
--- a/src/client/conversation-viewer/conversation-listbox.vala
+++ b/src/client/conversation-viewer/conversation-listbox.vala
@@ -445,28 +445,6 @@ public class ConversationListBox : Gtk.ListBox {
     }
 
     /**
-     * Hides a specific email in the conversation.
-     */
-    public void blacklist_by_id(Geary.EmailIdentifier? id) {
-        EmailRow? row = this.id_to_row.get(id);
-        if (row != null) {
-            row.hide();
-            update_last_row();
-        }
-    }
-
-    /**
-     * Re-displays a previously blacklisted email.
-     */
-    public void unblacklist_by_id(Geary.EmailIdentifier? id) {
-        EmailRow? row = this.id_to_row.get(id);
-        if (row != null) {
-            row.show();
-            update_last_row();
-        }
-    }
-
-    /**
      * Loads search term matches for this list's emails.
      */
     public async void load_search_terms() {