diff options
Diffstat (limited to 'Demo/tkinter/www/www12.py')
| -rwxr-xr-x | Demo/tkinter/www/www12.py | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/Demo/tkinter/www/www12.py b/Demo/tkinter/www/www12.py new file mode 100755 index 0000000..2e870c4 --- /dev/null +++ b/Demo/tkinter/www/www12.py @@ -0,0 +1,210 @@ +#! /usr/local/bin/python + +# www12.py -- display the contents of a URL in a Text widget +# - set window title +# - make window resizable +# - update display while reading +# - vertical scroll bar +# - rewritten as class +# - editable url entry and reload button +# - error dialog +# - menu bar; added 'master' option to constructor + +import sys +import urllib +from Tkinter import * +import Dialog + +def main(): + if len(sys.argv) != 2 or sys.argv[1][:1] == '-': + print "Usage:", sys.argv[0], "url" + sys.exit(2) + url = sys.argv[1] + tk = Tk() + tk.withdraw() + viewer = Viewer(tk) + viewer.load(url) + viewer.go() + +class Viewer: + + def __init__(self, master = None): + # Create root window + if master is None: + self.root = self.master = Tk() + else: + self.master = master + self.root = Toplevel(self.master) + self.root.minsize(1, 1) + + # Create menu bar + self.mbar = Frame(self.root, + {'relief': 'raised', + 'border': 2}) + self.mbar.pack({'fill': 'x'}) + + # Create File menu + self.filebutton = Menubutton(self.mbar, {'text': 'File'}) + self.filebutton.pack({'side': 'left'}) + + self.filemenu = Menu(self.filebutton) + self.filebutton['menu'] = self.filemenu + + # Create Edit menu + self.editbutton = Menubutton(self.mbar, {'text': 'Edit'}) + self.editbutton.pack({'side': 'left'}) + + self.editmenu = Menu(self.editbutton) + self.editbutton['menu'] = self.editmenu + + # Magic so you can swipe from one button to the next + self.mbar.tk_menuBar(self.filebutton, self.editbutton) + + # Populate File menu + self.filemenu.add('command', {'label': 'New', + 'command': self.new_command}) + self.filemenu.add('command', {'label': 'Open...', + 'command': self.open_command}) + self.filemenu.add('command', {'label': 'Clone', + 'command': self.clone_command}) + self.filemenu.add('separator') + self.filemenu.add('command', {'label': 'Close', + 'command': self.close_command}) + self.filemenu.add('command', {'label': 'Quit', + 'command': self.quit_command}) + + # Populate Edit menu + pass + + # Create topframe for the entry and button + self.topframe = Frame(self.root) + self.topframe.pack({'fill': 'x'}) + + # Create a label in front of the entry + self.urllabel = Label(self.topframe, {'text': 'URL:'}) + self.urllabel.pack({'side': 'left'}) + + # Create the entry containing the URL + self.entry = Entry(self.topframe, + {'relief': 'sunken', 'border': 2}) + self.entry.pack({'side': 'left', 'fill': 'x', 'expand': 1}) + self.entry.bind('<Return>', self.loadit) + + # Create the button + self.reload = Button(self.topframe, + {'text': 'Reload', + 'command': self.reload}) + self.reload.pack({'side': 'right'}) + + # Create botframe for the text and scrollbar + self.botframe = Frame(self.root) + self.botframe.pack({'fill': 'both', 'expand': 1}) + + # The Scrollbar *must* be created first + self.vbar = Scrollbar(self.botframe) + self.vbar.pack({'fill': 'y', 'side': 'right'}) + self.text = Text(self.botframe) + self.text.pack({'expand': 1, 'fill': 'both', 'side': 'left'}) + + # Link Text widget and Scrollbar + self.text['yscrollcommand'] = (self.vbar, 'set') + self.vbar['command'] = (self.text, 'yview') + + self.url = None + + def load(self, url): + # Load a new URL into the window + fp, url = self.urlopen(url) + if not fp: + return + + self.url = url + + self.root.title(url) + + self.entry.delete('0', 'end') + self.entry.insert('end', url) + + self.text.delete('0.0', 'end') + + while 1: + line = fp.readline() + if not line: break + if line[-2:] == '\r\n': line = line[:-2] + '\n' + self.text.insert('end', line) + self.root.update_idletasks() + + fp.close() + + def urlopen(self, url): + # Open a URL -- + # return (fp, url) if successful + # display dialog and return (None, url) for errors + try: + fp = urllib.urlopen(url) + except IOError, msg: + import types + if type(msg) == types.TupleType and len(msg) == 4: + if msg[1] == 302: + m = msg[3] + if m.has_key('location'): + url = m['location'] + return self.urlopen(url) + elif m.has_key('uri'): + url = m['uri'] + return self.urlopen(url) + self.errordialog(IOError, msg) + fp = None + return fp, url + + def errordialog(self, exc, msg): + # Display an error dialog -- return when the user clicks OK + Dialog.Dialog(self.root, { + 'text': str(msg), + 'title': exc, + 'bitmap': 'error', + 'default': 0, + 'strings': ('OK',), + }) + + def go(self): + # Start Tk main loop + self.root.mainloop() + + def reload(self, *args): + # Callback for Reload button + if self.url: + self.load(self.url) + + def loadit(self, *args): + # Callback for <Return> event in entry + self.load(self.entry.get()) + + def new_command(self): + # File/New... + Viewer(self.master) + + def clone_command(self): + # File/Clone + v = Viewer(self.master) + v.load(self.url) + + def open_command(self): + # File/Open... + print "File/Open...: Not implemented" + + def close_command(self): + # File/Close + self.destroy() + + def quit_command(self): + # File/Quit + self.root.quit() + + def destroy(self): + # Destroy this window + self.root.destroy() + if self.master is not self.root and not self.master.children: + self.master.quit() + +main() |