# HG changeset patch
# User Alain Leufroy
# Date 1639913724 -3600
#      Sun Dec 19 12:35:24 2021 +0100
# Node ID 1bd04c04b076a1b2f6468bdc84daf21d571a22c9
# Parent  fd54925d16ca14105058c97f1f37892c206c6b89
main widget: allow user to specify a maximalized pane on startup.

diff --git a/lairucrem/config.py b/lairucrem/config.py
--- a/lairucrem/config.py
+++ b/lairucrem/config.py
@@ -333,11 +333,15 @@
 
 HORIZONTAL = 'horizontal'
 VERTICAL = 'vertical'
+TREE = 'tree'
+DETAILS = 'details'
 
 # Split orientation of the main widget. One of:
 # - None: orientation depends on the screen size
 # - HORIZONTAL: tree and diff panes are horizontally packed
 # - VERTICAL: tree and diff panes are vertically packed
+# - TREE: maximalize the tree pane
+# - DETAILS: maximalize the PATCH pane
 DEFAULT_MAIN_VIEW = None
 
 
diff --git a/lairucrem/widgets/mainwidget.py b/lairucrem/widgets/mainwidget.py
--- a/lairucrem/widgets/mainwidget.py
+++ b/lairucrem/widgets/mainwidget.py
@@ -136,8 +136,11 @@
     def _unfocused_options(self):
         raise NotImplementedError
 
-    def toggle_maximize(self):
-        self._maximized = not(self._maximized)
+    def toggle_maximize(self, value=None):
+        if value is None:
+            self._maximized = not(self._maximized)
+        else:
+            self._maximized = value
         self._modified()
 
     def __iter__(self):
@@ -173,7 +176,9 @@
         return True
 
     def __init__(self, widgets):
-        self._orientation = config.DEFAULT_MAIN_VIEW
+        self._orientation = None
+        if config.DEFAULT_MAIN_VIEW in (config.HORIZONTAL, config.VERTICAL):
+            self._orientation = config.DEFAULT_MAIN_VIEW
         self._widgets = widgets
         self._original_widget = None
         self._column_widget = None
@@ -183,6 +188,9 @@
         if self._orientation:
             self._previous_size = ANY
             self._update_container()
+        if config.DEFAULT_MAIN_VIEW in (config.TREE, config.DETAILS):
+            self._set_focus_position(0 if config.DEFAULT_MAIN_VIEW == config.TREE else 1)
+            self._toggle_miximize(True)
 
     def render(self, size, focus):
         """render the widget"""
@@ -211,9 +219,9 @@
         self._column_widget.focus_position = num
         self._pile_widget.focus_position = num
 
-    def _toggle_miximize(self):
-        self._column_widget.contents.toggle_maximize()
-        self._pile_widget.contents.toggle_maximize()
+    def _toggle_miximize(self, value=None):
+        self._column_widget.contents.toggle_maximize(value)
+        self._pile_widget.contents.toggle_maximize(value)
 
     def _guess_orientation(self, size):
         cols = size[0]