def onCut(self):
if not self.text.tag_ranges(SEL):
showerror('PyEdit', 'No text selected')
else:
self.onCopy() # save and delete selected text
self.onDelete()

def onPaste(self):
try:
text = self.selection_get(selection='CLIPBOARD')
except TclError:
showerror('PyEdit', 'Nothing to paste')
return
self.text.insert(INSERT, text) # add at current insert cursor
self.text.tag_remove(SEL, '1.0', END)
self.text.tag_add(SEL, INSERT+'-%dc' % len(text), INSERT)
self.text.see(INSERT) # select it, so it can be cut

def onSelectAll(self):
self.text.tag_add(SEL, '1.0', END+'-1c') # select entire text
self.text.mark_set(INSERT, '1.0') # move insert point to top
self.text.see(INSERT) # scroll to top

############################################################################

Search menu commands

############################################################################

def onGoto(self, forceline=None):
line = forceline or askinteger('PyEdit', 'Enter line number')
self.text.update()
self.text.focus()
if line is not None:
maxindex = self.text.index(END+'-1c')
maxline = int(maxindex.split('.')[0])
if line > 0 and line <= maxline:
self.text.mark_set(INSERT, '%d.0' % line) # goto line
self.text.tag_remove(SEL, '1.0', END) # delete selects
self.text.tag_add(SEL, INSERT, 'insert + 1l') # select line
self.text.see(INSERT) # scroll to line
else:
showerror('PyEdit', 'Bad line number')

def onFind(self, lastkey=None):
key = lastkey or askstring('PyEdit', 'Enter search string')
self.text.update()
self.text.focus()
self.lastfind = key
if key: # 2.0: nocase
nocase = configs.get('caseinsens', True) # 2.0: config
where = self.text.search(key, INSERT, END, nocase=nocase)
if not where: # don't wrap
showerror('PyEdit', 'String not found')
else:

706 | Chapter 11: Complete GUI Programs