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‎Demo/cwilib/cwilib.py‎

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# Interface to the interactive CWI library catalog.
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import sys
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import stdwin
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from stdwinevents import *
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import select
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import telnetlib
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import vt100win
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from form import Form
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# Main program
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def main():
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vt = vt100win.VT100win()
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#
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host = 'biefstuk.cwi.nl'
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port = 0
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timeout = 10.0
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tn = telnetlib.Telnet(host, port)
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tn.set_timeout(timeout)
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#
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try:
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vt.send(tn.read_until('login: '))
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tn.write('cwilib\r')
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#
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vt.send(tn.read_until('Hit <RETURN> to continue...'))
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tn.write('\r')
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#
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vt.send(tn.read_until('QUIT'))
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except EOFError:
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sys.stderr.write('Connection closed prematurely\n')
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sys.exit(1)
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#
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define_screens(vt)
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matches = vt.which_screens()
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if 'menu' not in matches:
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sys.stderr.write('No main menu within %g seconds\n' % timeout)
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sys.exit(1)
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#
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tn.set_timeout(0)
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tn.write('\r\r')
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vt.open('Progress -- CWI Library')
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ui = UserInterface()
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#
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while 1:
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event = stdwin.pollevent()
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if not event:
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rfd, wfd, xfd = select.select([stdwin, tn], [], [])
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if stdwin in rfd:
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event = stdwin.getevent()
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if event:
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type, window, detail = event
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if window == None and type == WE_LOST_SEL:
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window = ui.queryform.window
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event = type, window, detail
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if type == WE_CLOSE:
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break
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if window in ui.windows:
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ui.dispatch(type, window, detail)
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elif window == vt.window:
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if type == WE_NULL:
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pass
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elif type == WE_COMMAND:
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if detail == WC_RETURN:
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tn.write('\r')
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elif detail == WC_BACKSPACE:
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tn.write('\b')
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elif detail == WC_TAB:
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tn.write('\t')
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elif detail == WC_UP:
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tn.write('\033[A')
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elif detail == WC_DOWN:
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tn.write('\033[B')
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elif detail == WC_RIGHT:
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tn.write('\033[C')
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elif detail == WC_LEFT:
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tn.write('\033[D')
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else:
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print '*** Command:', detail
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elif type == WE_CHAR:
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tn.write(detail)
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elif type == WE_DRAW:
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vt.draw(detail)
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elif type in (WE_ACTIVATE, WE_DEACTIVATE):
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pass
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else:
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print '*** VT100 event:', type, detail
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else:
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print '*** Alien event:', type, window, detail
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elif tn in rfd:
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vt.window.setwincursor('watch')
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try:
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data = tn.read_now()
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except EOFError:
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stdwin.message('Connection closed--goodbye')
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break
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print 'send...'
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vt.send(data)
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print 'send...done'
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vt.window.setwincursor('arrow')
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matches = vt.which_screens()
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if 'timelimit' in matches:
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stdwin.message('Time limit--goodbye')
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break
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print '*** Matches:', matches
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else:
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print '*** Weird return from select:', rfd, wfd, xfd
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# Subroutine to define our screen recognition patterns
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def define_screens(vt):
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vt.define_screen('menu', {
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'title': ('search', 0, 0, 80,
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' SEARCH FUNCTIONS +OTHER FUNCTIONS '),
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})
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vt.define_screen('search', {
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'title': ('search', 0, 0, 80, ' Search '),
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})
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vt.define_screen('shortlist', {'title': ('search', 0, 0, 80,
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' Short-list')})
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vt.define_screen('showrecord', {
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'title': ('search', 0, 0, 80, ' Show record '),
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})
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vt.define_screen('timelimit', {
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'limit': ('search', 12, 0, 80, ' TIME LIMIT '),
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})
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vt.define_screen('attention', {
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'BASE': ('copy', 0, 0, 0, 'search'),
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'title': ('search', 10, 0, 80, ' ATTENTION ')})
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vt.define_screen('syntaxerror', {
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'BASE': ('copy', 0, 0, 0, 'attention'),
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'message': ('search', 12, 0, 80, ' Syntax error'),
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})
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vt.define_screen('emptyerror', {
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'BASE': ('copy', 0, 0, 0, 'attention'),
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'message': ('search', 12, 0, 80,
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' Check your input. Search at least one term'),
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})
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vt.define_screen('unsortedwarning', {
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'BASE': ('copy', 0, 0, 0, 'attention'),
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'message': ('search', 12, 0, 80,
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' Number of records exceeds sort limit'),
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})
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vt.define_screen('thereismore', {
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'BASE': ('copy', 0, 0, 0, 'showrecord'),
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'message': ('search', 15, 0, 80,
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'There is more within this record. Use the arrow keys'),
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})
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vt.define_screen('nofurther', {
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'BASE': ('copy', 0, 0, 0, 'showrecord'),
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'message': ('search', 17, 0, 80, 'You cannot go further\.'),
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})
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vt.define_screen('nofurtherback', {
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'BASE': ('copy', 0, 0, 0, 'showrecord'),
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'message': ('search', 17, 0, 80,
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'You cannot go further back'),
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})
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# Class to implement our user interface.
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class UserInterface:
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def __init__(self):
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stdwin.setfont('7x14')
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self.queryform = QueryForm()
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self.listform = ListForm()
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self.recordform = RecordForm()
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self.forms = [self.queryform, self.listform, self.recordform]
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define_query_fields(self.queryform)
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self.windows = []
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for form in self.forms:
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if form.formheight > 0:
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form.open()
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self.windows.append(form.window)
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def __del__(self):
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self.close()
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def close(self):
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for form in self.forms:
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form.close()
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def dispatch(self, type, window, detail):
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for form in self.forms:
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if window == form.window:
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form.dispatch(type, detail)
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def define_query_fields(f):
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f.define_field('name', 'Name auth./ed.', 1, 60)
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f.define_field('title', 'Title', 4, 60)
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f.define_field('shelfmark', 'Shelf mark', 1, 60)
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f.define_field('class', 'Prim. classif.', 1, 60)
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f.define_field('series', 'Series', 1, 60)
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f.define_field('congress', 'Congr. pl./year', 1, 60)
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f.define_field('type', 'Type', 1, 60)
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class QueryForm(Form):
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def __init__(self):
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Form.__init__(self, 'Query form -- CWI Library')
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def dispatch(self, type, detail):
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if type == WE_COMMAND and detail == WC_RETURN:
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print '*** SUBMIT ***'
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else:
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Form.dispatch(self, type, detail)
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class ListForm(Form):
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def __init__(self):
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Form.__init__(self, 'Short list -- CWI Library')
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class RecordForm(Form):
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def __init__(self):
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Form.__init__(self, 'Record detail -- CWI Library')
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main()

‎Demo/cwilib/form.py‎

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# Fill-out form window
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import stdwin
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from stdwinevents import *
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class Form:
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def __init__(self, title):
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self.title = title
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self.window = None
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self.fields = {}
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self.fieldnames = []
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self.formwidth = self.formheight = 0
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self.focusname = None
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self.tefocus = None
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def define_field(self, name, label, lines, chars):
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self.fieldnames.append(name)
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lh = stdwin.lineheight()
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cw = stdwin.textwidth('m')
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left = 20*cw
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top = self.formheight + 4
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right = left + chars*cw
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bottom = top + lines*lh
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te = None
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self.fields[name] = (label, left, top, right, bottom, te)
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self.formheight = bottom + 2
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self.formwidth = max(self.formwidth, right + 4)
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def open(self):
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if self.window: return
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self.formwidth = max(100, self.formwidth)
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self.formheight = max(50, self.formheight)
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stdwin.setdefwinsize(self.formwidth, self.formheight)
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stdwin.setdefscrollbars(0, 0)
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self.window = stdwin.open(self.title)
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self.window.setdocsize(self.formwidth, self.formheight)
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for name in self.fieldnames:
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label, left, top, right, bottom, te = \
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self.fields[name]
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rect = (left, top), (right, bottom)
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te = self.window.textcreate(rect)
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te.setactive(0)
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te.setview(rect)
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self.fields[name] = \
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label, left, top, right, bottom, te
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if self.fieldnames:
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self.setfocus(self.fieldnames[0])
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def setfocus(self, name):
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if name <> self.focusname and self.tefocus:
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self.tefocus.setactive(0)
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self.focusname = name
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if self.focusname:
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self.tefocus = self.fields[self.focusname][-1]
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self.tefocus.setactive(1)
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else:
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self.tefocus = None
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def dispatch(self, type, detail):
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event = type, self.window, detail
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if type == WE_NULL:
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pass
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elif type == WE_DRAW:
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self.draw(detail)
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elif type == WE_MOUSE_DOWN:
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x, y = detail[0]
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for name in self.fieldnames:
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label, left, top, right, bottom, te = \
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self.fields[name]
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if left <= x < right and \
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top <= y < bottom:
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self.setfocus(name)
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break
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else:
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stdwin.fleep()
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return
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if self.tefocus:
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(left, top), (right, bottom) = \
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self.tefocus.getrect()
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if x < left: x = left
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if x >= right: x = right-1
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if y < top: y = top
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if y >= bottom:
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y = bottom-1
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x = right-1
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event = type, self.window, ((x,y),)+detail[1:]
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if not self.tefocus.event(event):
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stdwin.fleep()
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elif type in (WE_MOUSE_MOVE, WE_MOUSE_UP, WE_CHAR):
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if not self.tefocus or not self.tefocus.event(event):
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stdwin.fleep()
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elif type == WE_MOUSE_UP:
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button = detail[2]
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if button == 2:
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self.paste_selection()
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else:
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self.make_selection()
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elif type == WE_COMMAND:
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if detail in (WC_BACKSPACE, WC_UP, WC_DOWN,
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WC_LEFT, WC_RIGHT):
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if not self.tefocus or \
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not self.tefocus.event(event):
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stdwin.fleep()
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elif detail == WC_RETURN:
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print '*** Submit query'
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elif detail == WC_TAB:
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if not self.fields:
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stdwin.fleep()
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return
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if not self.focusname:
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i = 0
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else:
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i = self.fieldnames.index(
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self.focusname)
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i = (i+1) % len(self.fieldnames)
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self.setfocus(self.fieldnames[i])
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self.tefocus.setfocus(0, 0x7fff)
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self.make_selection()
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elif type in (WE_ACTIVATE, WE_DEACTIVATE):
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pass
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elif type == WE_LOST_SEL:
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if self.tefocus:
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a, b = self.tefocus.getfocus()
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self.tefocus.setfocus(a, a)
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else:
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print 'Form.dispatch(%d, %s)' % (type, `detail`)
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def draw(self, detail):
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d = self.window.begindrawing()
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d.cliprect(detail)
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d.erase(detail)
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self.drawform(d, detail)
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d.noclip()
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d.close()
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# Stupid textedit objects can't draw with open draw object...
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self.drawtextedit(detail)
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def drawform(self, d, detail):
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for name in self.fieldnames:
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label, left, top, right, bottom, te = self.fields[name]
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d.text((0, top), label)
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d.box((left-3, top-2), (right+4, bottom+2))
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def drawtextedit(self, detail):
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for name in self.fieldnames:
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label, left, top, right, bottom, te = self.fields[name]
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te.draw(detail)
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def make_selection(self):
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s = self.tefocus.getfocustext()
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if not s:
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return
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stdwin.rotatecutbuffers(1)
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stdwin.setcutbuffer(0, s)
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if not self.window.setselection(WS_PRIMARY, s):
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stdwin.fleep()
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def paste_selection(self):
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if not self.tefocus:
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stdwin.fleep()
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return
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s = stdwin.getselection(WS_PRIMARY)
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if not s:
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s = stdwin.getcutbuffer(0)
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if not s:
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stdwin.fleep()
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return
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self.tefocus.replace(s)

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