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authorTerry Jan Reedy <tjreedy@udel.edu>2016-05-22 23:10:31 (GMT)
committerTerry Jan Reedy <tjreedy@udel.edu>2016-05-22 23:10:31 (GMT)
commit0d9220e162f1e5f8caa3d7ebaa54665776d361a1 (patch)
treea4fa9f7cafdfc93fde86b8ffd6088d739bb93e01 /Lib/idlelib/IdleHistory.py
parentdc4f7c09cc934524a763498250e30123a0d9d2c5 (diff)
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Issue #24225: Rename many idlelib/*.py and idlelib/idle_test/test_*.py files.
Diffstat (limited to 'Lib/idlelib/IdleHistory.py')
-rw-r--r--Lib/idlelib/IdleHistory.py104
1 files changed, 0 insertions, 104 deletions
diff --git a/Lib/idlelib/IdleHistory.py b/Lib/idlelib/IdleHistory.py
deleted file mode 100644
index 078af29..0000000
--- a/Lib/idlelib/IdleHistory.py
+++ /dev/null
@@ -1,104 +0,0 @@
-"Implement Idle Shell history mechanism with History class"
-
-from idlelib.configHandler import idleConf
-
-class History:
- ''' Implement Idle Shell history mechanism.
-
- store - Store source statement (called from PyShell.resetoutput).
- fetch - Fetch stored statement matching prefix already entered.
- history_next - Bound to <<history-next>> event (default Alt-N).
- history_prev - Bound to <<history-prev>> event (default Alt-P).
- '''
- def __init__(self, text):
- '''Initialize data attributes and bind event methods.
-
- .text - Idle wrapper of tk Text widget, with .bell().
- .history - source statements, possibly with multiple lines.
- .prefix - source already entered at prompt; filters history list.
- .pointer - index into history.
- .cyclic - wrap around history list (or not).
- '''
- self.text = text
- self.history = []
- self.prefix = None
- self.pointer = None
- self.cyclic = idleConf.GetOption("main", "History", "cyclic", 1, "bool")
- text.bind("<<history-previous>>", self.history_prev)
- text.bind("<<history-next>>", self.history_next)
-
- def history_next(self, event):
- "Fetch later statement; start with ealiest if cyclic."
- self.fetch(reverse=False)
- return "break"
-
- def history_prev(self, event):
- "Fetch earlier statement; start with most recent."
- self.fetch(reverse=True)
- return "break"
-
- def fetch(self, reverse):
- '''Fetch statememt and replace current line in text widget.
-
- Set prefix and pointer as needed for successive fetches.
- Reset them to None, None when returning to the start line.
- Sound bell when return to start line or cannot leave a line
- because cyclic is False.
- '''
- nhist = len(self.history)
- pointer = self.pointer
- prefix = self.prefix
- if pointer is not None and prefix is not None:
- if self.text.compare("insert", "!=", "end-1c") or \
- self.text.get("iomark", "end-1c") != self.history[pointer]:
- pointer = prefix = None
- self.text.mark_set("insert", "end-1c") # != after cursor move
- if pointer is None or prefix is None:
- prefix = self.text.get("iomark", "end-1c")
- if reverse:
- pointer = nhist # will be decremented
- else:
- if self.cyclic:
- pointer = -1 # will be incremented
- else: # abort history_next
- self.text.bell()
- return
- nprefix = len(prefix)
- while 1:
- pointer += -1 if reverse else 1
- if pointer < 0 or pointer >= nhist:
- self.text.bell()
- if not self.cyclic and pointer < 0: # abort history_prev
- return
- else:
- if self.text.get("iomark", "end-1c") != prefix:
- self.text.delete("iomark", "end-1c")
- self.text.insert("iomark", prefix)
- pointer = prefix = None
- break
- item = self.history[pointer]
- if item[:nprefix] == prefix and len(item) > nprefix:
- self.text.delete("iomark", "end-1c")
- self.text.insert("iomark", item)
- break
- self.text.see("insert")
- self.text.tag_remove("sel", "1.0", "end")
- self.pointer = pointer
- self.prefix = prefix
-
- def store(self, source):
- "Store Shell input statement into history list."
- source = source.strip()
- if len(source) > 2:
- # avoid duplicates
- try:
- self.history.remove(source)
- except ValueError:
- pass
- self.history.append(source)
- self.pointer = None
- self.prefix = None
-
-if __name__ == "__main__":
- from unittest import main
- main('idlelib.idle_test.test_idlehistory', verbosity=2, exit=False)