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58fc71c447
About 10 IDLE features were implemented as supposedly optional extensions. Their different behavior could be confusing or worse for users and not good for maintenance. Hence the conversion. The main difference for users is that user configurable key bindings for builtin features are now handled uniformly. Now, editing a binding in a keyset only affects its value in the keyset. All bindings are defined together in the system-specific default keysets in config- extensions.def. All custom keysets are saved as a whole in config- extension.cfg. All take effect as soon as one clicks Apply or Ok. The affected events are '<<force-open-completions>>', '<<expand-word>>', '<<force-open-calltip>>', '<<flash-paren>>', '<<format-paragraph>>', '<<run-module>>', '<<check-module>>', and '<<zoom-height>>'. Any (global) customizations made before 3.6.3 will not affect their keyset- specific customization after 3.6.3. and vice versa. Inital patch by Charles Wohlganger, revised by Terry Jan Reedy.
96 lines
3.1 KiB
Python
96 lines
3.1 KiB
Python
'''Complete the current word before the cursor with words in the editor.
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Each menu selection or shortcut key selection replaces the word with a
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different word with the same prefix. The search for matches begins
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before the target and moves toward the top of the editor. It then starts
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after the cursor and moves down. It then returns to the original word and
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the cycle starts again.
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Changing the current text line or leaving the cursor in a different
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place before requesting the next selection causes AutoExpand to reset
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its state.
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There is only one instance of Autoexpand.
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'''
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import re
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import string
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class AutoExpand:
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wordchars = string.ascii_letters + string.digits + "_"
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def __init__(self, editwin):
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self.text = editwin.text
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self.bell = self.text.bell
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self.state = None
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def expand_word_event(self, event):
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"Replace the current word with the next expansion."
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curinsert = self.text.index("insert")
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curline = self.text.get("insert linestart", "insert lineend")
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if not self.state:
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words = self.getwords()
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index = 0
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else:
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words, index, insert, line = self.state
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if insert != curinsert or line != curline:
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words = self.getwords()
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index = 0
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if not words:
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self.bell()
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return "break"
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word = self.getprevword()
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self.text.delete("insert - %d chars" % len(word), "insert")
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newword = words[index]
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index = (index + 1) % len(words)
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if index == 0:
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self.bell() # Warn we cycled around
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self.text.insert("insert", newword)
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curinsert = self.text.index("insert")
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curline = self.text.get("insert linestart", "insert lineend")
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self.state = words, index, curinsert, curline
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return "break"
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def getwords(self):
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"Return a list of words that match the prefix before the cursor."
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word = self.getprevword()
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if not word:
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return []
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before = self.text.get("1.0", "insert wordstart")
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wbefore = re.findall(r"\b" + word + r"\w+\b", before)
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del before
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after = self.text.get("insert wordend", "end")
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wafter = re.findall(r"\b" + word + r"\w+\b", after)
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del after
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if not wbefore and not wafter:
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return []
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words = []
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dict = {}
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# search backwards through words before
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wbefore.reverse()
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for w in wbefore:
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if dict.get(w):
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continue
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words.append(w)
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dict[w] = w
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# search onwards through words after
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for w in wafter:
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if dict.get(w):
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continue
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words.append(w)
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dict[w] = w
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words.append(word)
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return words
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def getprevword(self):
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"Return the word prefix before the cursor."
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line = self.text.get("insert linestart", "insert")
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i = len(line)
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while i > 0 and line[i-1] in self.wordchars:
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i = i-1
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return line[i:]
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if __name__ == '__main__':
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import unittest
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unittest.main('idlelib.idle_test.test_autoexpand', verbosity=2)
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