Patch 611069 (Christos Georgiou) IDLE TODO:left/right when selected text
M EditorWindow.py
M NEWS.txt
M TODO.txt
diff --git a/Lib/idlelib/EditorWindow.py b/Lib/idlelib/EditorWindow.py
index b9522fc..fcb1612 100644
--- a/Lib/idlelib/EditorWindow.py
+++ b/Lib/idlelib/EditorWindow.py
@@ -132,6 +132,8 @@
text.bind("<<untabify-region>>",self.untabify_region_event)
text.bind("<<toggle-tabs>>",self.toggle_tabs_event)
text.bind("<<change-indentwidth>>",self.change_indentwidth_event)
+ text.bind("<Left>", self.move_at_edge_if_selection(0))
+ text.bind("<Right>", self.move_at_edge_if_selection(1))
if flist:
flist.inversedict[self] = key
@@ -344,6 +346,26 @@
self.text.tag_remove("sel", "1.0", "end")
self.text.see("insert")
+ def move_at_edge_if_selection(self, edge_index):
+ """Cursor move begins at start or end of selection
+
+ When a left/right cursor key is pressed create and return to Tkinter a
+ function which causes a cursor move from the associated edge of the
+ selection.
+
+ """
+ self_text_index = self.text.index
+ self_text_mark_set = self.text.mark_set
+ edges_table = ("sel.first+1c", "sel.last-1c")
+ def move_at_edge(event):
+ if (event.state & 5) == 0: # no shift(==1) or control(==4) pressed
+ try:
+ self_text_index("sel.first")
+ self_text_mark_set("insert", edges_table[edge_index])
+ except TclError:
+ pass
+ return move_at_edge
+
def find_event(self, event):
SearchDialog.find(self.text)
return "break"