Merge branch 'expand-output-on-execution'

Expand cell when kernel send some output.

fixes #88

doc/source/index.rst

@@ -543,6 +543,8 @@ Change Log
 v0.2
 ----
 
+* Expand code cell output on execution.
+  (`#88 <https://github.com/tkf/emacs-ipython-notebook/issues/88>`_).
 * Improve :el:symbol:`ein:completer-dot-complete` and
   :el:symbol:`ein:jedi-dot-complete`.  Do not expand common part when
   inserting dot, to make typing code containing dots less surprising.

lisp/ein-cell.el

@@ -602,10 +602,17 @@ If the input area of the CELL does not exist, return `nil'"
 
 (defmethod ein:cell-set-collapsed ((cell ein:codecell) collapsed)
   "Set `:collapsed' slot of CELL and invalidate output ewoc nodes."
-  (oset cell :collapsed collapsed)
-  (apply #'ewoc-invalidate
-         (oref cell :ewoc)
-         (ein:cell-element-get cell :output)))
+  (unless (eq (oref cell :collapsed) collapsed)
+    (oset cell :collapsed collapsed)
+    (apply #'ewoc-invalidate
+           (oref cell :ewoc)
+           (ein:cell-element-get cell :output))))
+
+(defmethod ein:cell-collapse ((cell ein:codecell))
+  (ein:cell-set-collapsed cell t))
+
+(defmethod ein:cell-expand ((cell ein:codecell))
+  (ein:cell-set-collapsed cell nil))
 
 (defmethod ein:cell-toggle-output ((cell ein:codecell))
   "Toggle `:collapsed' slot of CELL and invalidate output ewoc nodes."
@@ -746,7 +753,7 @@ If END is non-`nil', return the location of next element."
            (intern (format "output-%s" (plist-get json :stream)))))))
 
 (defmethod ein:cell-append-output ((cell ein:codecell) json dynamic)
-  ;; (ein:cell-expand cell)
+  (ein:cell-expand cell)
   ;; (ein:flush-clear-timeout)
   (oset cell :outputs
         (append (oref cell :outputs) (list json)))