[geary/mjog/mutiple-main-windows: 1/2] Select account/folder/conversations in new windows

[Michael Gratton <mjog src gnome org>]

commit af2b799dc72468c10b9bba9c93b867c7a2edddde
Author: Michael Gratton <mike vee net>
Date:   Mon Nov 18 18:50:45 2019 +1100

    Select account/folder/conversations in new windows
    
    Select the same as was selected in last active window, if any.

 src/client/application/application-client.vala | 30 +++++++++++++++++++++++---
 1 file changed, 27 insertions(+), 3 deletions(-)
---
diff --git a/src/client/application/application-client.vala b/src/client/application/application-client.vala
index 7e5a3ba1..f5ef4e9e 100644
--- a/src/client/application/application-client.vala
+++ b/src/client/application/application-client.vala
@@ -615,10 +615,24 @@ public class Application.Client : Gtk.Application {
         this.controller.compose(mailto);
     }
 
-    public async void new_window() {
+    public async void new_window(Geary.Folder? select_folder,
+                                 Gee.Collection<Geary.App.Conversation>? select_conversations) {
         yield create_controller();
 
-        new_main_window().present();
+        MainWindow main = new_main_window();
+        main.present();
+
+        if (select_folder != null) {
+            if (select_conversations == null || select_conversations.is_empty) {
+                main.select_folder.begin(select_folder, true);
+            } else {
+                main.show_conversations.begin(
+                    select_folder,
+                    select_conversations,
+                    true
+                );
+            }
+        }
     }
 
     /** Returns the application's base user configuration directory. */
@@ -974,7 +988,17 @@ public class Application.Client : Gtk.Application {
     }
 
     private void on_activate_new_window() {
-        this.new_window.begin();
+        // If there was an existing active main, select the same
+        // account/folder/conversation.
+        MainWindow? current = this.last_active_main_window;
+        // Make a copy of the selection so the underlying collection
+        // doesn't change as the selection does.
+        this.new_window.begin(
+            current.selected_folder,
+            Geary.traverse(
+                current.conversation_list_view.get_selected_conversations()
+            ).to_linked_list()
+        );
     }
 
     private void on_activate_preferences() {