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Use disabled state to enforce read-only state (bit painful since it means

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switching states each time we insert some text but has to be done this way
since else class bindings might allow editing...)
This commit is contained in:
Guido van Rossum 1994-07-12 09:00:42 +00:00
parent 3e395be1ee
commit c618ed9868
1 changed files with 19 additions and 27 deletions
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46
Demo/tkinter/guido/ManPage.py
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@ -81,7 +81,10 @@ class EditableManPage(ScrolledText):
self.ok = 0
self.empty = 0
self.buffer = None
savestate = self['state']
self['state'] = 'normal'
self.delete('1.0', 'end')
self['state'] = savestate
# End parsing -- must be busy, need not be at EOF
def _endparser(self):
@ -128,6 +131,8 @@ class EditableManPage(ScrolledText):
self.ok = 0
self.empty = 0
return
savestate = self['state']
self['state'] = 'normal'
if self.empty:
# One or more previous lines were empty
# -- insert one blank line in the text
@ -137,19 +142,19 @@ class EditableManPage(ScrolledText):
if not propline:
# No properties
self._insert_prop(textline)
self.lineno = self.lineno + 1
return
# Search for properties
p = ''
j = 0
for i in range(min(len(propline), len(textline))):
if propline[i] != p:
if j < i:
self._insert_prop(textline[j:i], p)
j = i
p = propline[i]
self._insert_prop(textline[j:])
else:
# Search for properties
p = ''
j = 0
for i in range(min(len(propline), len(textline))):
if propline[i] != p:
if j < i:
self._insert_prop(textline[j:i], p)
j = i
p = propline[i]
self._insert_prop(textline[j:])
self.lineno = self.lineno + 1
self['state'] = savestate
# Insert a string at the end, with at most one property (tag)
def _insert_prop(self, str, prop = ' '):
@ -166,21 +171,8 @@ class ReadonlyManPage(EditableManPage):
# Initialize instance
def __init__(self, master=None, cnf={}):
# Initialize base class
EditableManPage.__init__(self, master, cnf)
# Make the text readonly
self.bind('<Any-KeyPress>', self.modify_cb)
self.bind('<Return>', self.modify_cb)
self.bind('<BackSpace>', self.modify_cb)
self.bind('<Delete>', self.modify_cb)
self.bind('<Control-h>', self.modify_cb)
self.bind('<Control-d>', self.modify_cb)
self.bind('<Control-v>', self.modify_cb)
# You could override this to ring the bell, etc.
def modify_cb(self, e):
pass
EditableManPage.__init__(self, master,
(cnf, {'state': 'disabled'}))
# Alias
ManPage = ReadonlyManPage