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[sup-devel] [PATCH] [issue44] cursor sticks to thread

The cursor will track the thread it is on when that thread is moved up
or down on the screen as threads are added or removed from the view.
---
 lib/sup/modes/thread-index-mode.rb |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)

diff --git a/lib/sup/modes/thread-index-mode.rb b/lib/sup/modes/thread-index-mode.rb
index a5bd344..9e70ec8 100644
--- a/lib/sup/modes/thread-index-mode.rb
+++ b/lib/sup/modes/thread-index-mode.rb
@@ -219,6 +219,10 @@ EOS
   end
 
   def update
+    ## remember the thread we are on and where the cursor is before we update
+    old_cursor_thread = cursor_thread
+    old_cursor_position = curpos
+
     @mutex.synchronize do
       ## let's see you do THIS in python
       @threads = @ts.threads.select { |t| !@hidden_threads[t] }.sort_by { |t| [t.date, t.first.id] }.reverse
@@ -226,6 +230,11 @@ EOS
       @size_widget_width = @size_widgets.max_of { |w| w.display_length }
     end
 
+    ## if the thread moved on screen, move the cursor to its new position
+    new_cursor_position = @threads.index(old_cursor_thread)||0
+    (old_cursor_position..(new_cursor_position-1)).each { |x| cursor_down }
+    (new_cursor_position..(old_cursor_position-1)).each { |x| cursor_up }
+
     regen_text
   end
 
-- 
1.6.6

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