The obligatory Slashdot headlines retriever. Every self-respecting modern
widget library has to have one... I think it also makes a nice demonstration of wxPython's capabilities. git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1536 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Harco de Hilster
342
utils/wxPython/tests/wxSlash.py
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342
utils/wxPython/tests/wxSlash.py
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#!/usr/bin/python
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from wxPython.wx import *
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from httplib import HTTP
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from htmllib import HTMLParser
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import os
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import re
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import formatter
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__doc__ = """This is wxSlash 1.0
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It's the obligatory Slashdot.org headlines reader that any modern
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widget set/library must have in order to be taken seriously :-)
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Usage is quite simple; wxSlash attempts to download the 'ultramode.txt'
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file from http://slashdot.org, which contains the headlines in a computer
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friendly format. It then displays said headlines in a wxWindows list control.
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You can read articles using either Python's html library or an external
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browser. Uncheck the 'browser->internal' menu item to use the latter option.
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Use the settings dialog box to set how external browser is started.
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This code is available under the wxWindows license, see elsewhere. If you
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modify this code, be aware of the fact that slashdot.org's maintainer,
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CmdrTaco, explicitly asks 'ultramode.txt' downloaders not to do this
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automatically more than twice per hour. If this feature is abused, CmdrTaco
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may remove the ultramode file completely and that will make a *lot* of people
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unhappy.
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I want to thank Alex Shnitman whose slashes.pl (Perl/GTK) script gave me
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the idea for this applet.
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Have fun with it,
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Harm van der Heijden (H.v.d.Heijden@phys.tue.nl)
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"""
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class HTMLTextView(wxFrame):
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def __init__(self, parent, id, title='HTMLTextView', url=None):
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wxFrame.__init__(self, parent, id, title, wxPyDefaultPosition,
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wxSize(600,400))
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self.mainmenu = wxMenuBar()
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menu = wxMenu()
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menu.Append(201, '&Open URL...', 'Open URL')
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EVT_MENU(self, 201, self.OnFileOpen)
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menu.Append(209, 'E&xit', 'Exit viewer')
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EVT_MENU(self, 209, self.OnFileExit)
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self.mainmenu.Append(menu, '&File')
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self.SetMenuBar(self.mainmenu)
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self.CreateStatusBar(1)
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self.text = wxTextCtrl(self, -1, "", wxPyDefaultPosition,
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wxPyDefaultSize, wxTE_MULTILINE | wxTE_READONLY)
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if (url):
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self.OpenURL(url)
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def logprint(self, x):
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self.SetStatusText(x)
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def OpenURL(self, url):
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self.url = url
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m = re.match('file:(\S+)\s*', url)
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if m:
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f = open(m.groups()[0],'r')
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else:
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m = re.match('http://([^/]+)(/\S*)\s*', url)
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if m:
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host = m.groups()[0]
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path = m.groups()[1]
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else:
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m = re.match('http://(\S+)\s*', url)
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if not m:
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# Invalid URL
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self.logprint("Invalid or unsupported URL: %s" % (url))
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return
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host = m.groups()[0]
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path = ''
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f = RetrieveAsFile(host,path,self.logprint)
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if not f:
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self.logprint("Could not open %s" % (url))
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return
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self.logprint("Receiving data...")
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data = f.read()
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tmp = open('/tmp/html.txt','w')
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fmt = formatter.AbstractFormatter(formatter.DumbWriter(tmp))
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p = HTMLParser(fmt)
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self.logprint("Parsing data...")
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p.feed(data)
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p.close()
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tmp.close()
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tmp = open('/tmp/html.txt', 'r')
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self.text.SetValue(tmp.read())
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self.SetTitle(url)
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self.logprint(url)
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def OnFileOpen(self, event):
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dlg = wxTextEntryDialog(self, "Enter URL to open:", "")
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if dlg.ShowModal() == wxID_OK:
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url = dlg.GetValue()
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else:
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url = None
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if url:
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self.OpenURL(url)
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def OnFileExit(self, event):
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self.Close()
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def OnCloseWindow(self, event):
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self.Destroy()
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def ParseSlashdot(f):
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art_sep = re.compile('%%\r?\n')
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line_sep = re.compile('\r?\n')
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data = f.read()
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list = art_sep.split(data)
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art_list = []
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for i in range(1,len(list)-1):
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art_list.append(line_sep.split(list[i]))
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return art_list
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def myprint(x):
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print x
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def RetrieveAsFile(host, path='', logprint = myprint):
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try:
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h = HTTP(host)
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except:
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logprint("Failed to create HTTP connection to %s... is the network available?" % (host))
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return None
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h.putrequest('GET',path)
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h.putheader('Accept','text/html')
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h.putheader('Accept','text/plain')
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h.endheaders()
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errcode, errmsg, headers = h.getreply()
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if errcode != 200:
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logprint("HTTP error code %d: %s" % (errcode, errmsg))
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return None
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f = h.getfile()
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# f = open('/home/harm/ultramode.txt','r')
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return f
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# This one isn't defined in the default wxPython modules...
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def EVT_LIST_ITEM_SELECTED(win, id, func):
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win.Connect(id, -1, wxEVT_COMMAND_LIST_ITEM_SELECTED, func)
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class AppStatusBar(wxStatusBar):
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def __init__(self, parent):
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wxStatusBar.__init__(self,parent, -1)
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self.SetFieldsCount(2)
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self.SetStatusWidths([100,-1])
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self.but = wxButton(self, 1001, "Refresh")
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EVT_BUTTON(self, 1001, parent.OnViewRefresh)
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self.OnSize(None)
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def logprint(self,x):
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self.SetStatusText(x,1)
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def OnSize(self, event):
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rect = self.GetFieldRect(0)
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self.but.SetPosition(wxPoint(rect.x+2, rect.y+2))
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# The width/height we get is false. Why? Now I use a stupid trick:
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rect2 = self.GetFieldRect(1)
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rect.width = rect2.x - 8;
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rect.height = 25;
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self.but.SetSize(wxSize(rect.width-4, rect.height-4))
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# This is a simple timer class to start a function after a short delay;
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# For example, if you're about to perform function f which may take a long
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# time, write "Please wait" in the statusbar, then create a QuickTimer(f)
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# object to automatically call f after a short delay. That way, wxWindows
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# will get a chance to update the statusbar before the long function is
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# called.
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# FIXME: can this be done better using an OnIdle kind of thing?
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class QuickTimer(wxTimer):
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def __init__(self, func, wait=100):
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wxTimer.__init__(self)
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self.callback = func
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self.Start(wait); # wait .1 second (.001 second doesn't work. why?)
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def Notify(self):
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self.Stop();
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apply(self.callback, ());
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class AppFrame(wxFrame):
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def __init__(self, parent, id, title):
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wxFrame.__init__(self, parent, id, title, wxPyDefaultPosition,
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wxSize(650, 250))
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# if the window manager closes the window:
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EVT_CLOSE(self, self.OnCloseWindow);
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# Now Create the menu bar and items
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self.mainmenu = wxMenuBar()
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menu = wxMenu()
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menu.Append(209, 'E&xit', 'Enough of this already!')
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EVT_MENU(self, 209, self.OnFileExit)
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self.mainmenu.Append(menu, '&File')
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menu = wxMenu()
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menu.Append(210, '&Refresh', 'Refresh headlines')
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EVT_MENU(self, 210, self.OnViewRefresh)
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menu.Append(211, '&Slashdot Index', 'View Slashdot index')
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EVT_MENU(self, 211, self.OnViewIndex)
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menu.Append(212, 'Selected &Article', 'View selected article')
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EVT_MENU(self, 212, self.OnViewArticle)
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self.mainmenu.Append(menu, '&View')
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menu = wxMenu()
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menu.Append(220, '&Internal', 'Use internal text browser',TRUE)
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menu.Check(220, true)
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self.UseInternal = 1;
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EVT_MENU(self, 220, self.OnBrowserInternal)
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menu.Append(222, '&Settings...', 'External browser Settings')
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EVT_MENU(self, 222, self.OnBrowserSettings)
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self.mainmenu.Append(menu, '&Browser')
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menu = wxMenu()
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menu.Append(230, '&About', 'Some documentation');
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EVT_MENU(self, 230, self.OnAbout)
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self.mainmenu.Append(menu, '&Help')
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self.SetMenuBar(self.mainmenu)
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self.BrowserSettings = "netscape -remote 'OpenURL(%s, new_window)'"
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# A status bar to tell people what's happening
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self.sb = AppStatusBar(self)
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self.SetStatusBar(self.sb)
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self.list = wxListCtrl(self, 1100)
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self.list.SetSingleStyle(wxLC_REPORT)
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self.list.InsertColumn(0, 'Subject')
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self.list.InsertColumn(1, 'Date')
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self.list.InsertColumn(2, 'Posted by')
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self.list.InsertColumn(3, 'Comments')
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self.list.SetColumnWidth(0, 300)
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self.list.SetColumnWidth(1, 150)
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self.list.SetColumnWidth(2, 100)
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self.list.SetColumnWidth(3, 100)
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EVT_LIST_ITEM_SELECTED(self, 1100, self.OnItemSelected)
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self.logprint("Connecting to slashdot... Please wait.")
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# Need a longer time here. Don't really know why
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self.timer = QuickTimer(self.DoRefresh, 1000)
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def logprint(self, x):
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self.sb.logprint(x)
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def OnFileExit(self, event):
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self.Destroy()
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def DoRefresh(self):
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f = RetrieveAsFile('slashdot.org','/ultramode.txt',self.sb.logprint)
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art_list = ParseSlashdot(f)
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self.list.DeleteAllItems()
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self.url = []
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self.current = -1
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i = 0;
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for article in art_list:
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self.list.InsertStringItem(i, article[0])
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self.list.SetItemString(i, 1, article[2])
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self.list.SetItemString(i, 2, article[3])
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self.list.SetItemString(i, 3, article[6])
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self.url.append(article[1])
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i = i + 1
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self.logprint("File retrieved OK.")
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def OnViewRefresh(self, event):
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self.timer = QuickTimer(self.DoRefresh)
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self.logprint("Connecting to slashdot... Please wait.");
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def DoViewIndex(self):
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if self.UseInternal:
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self.view = HTMLTextView(self, -1, 'slashdot.org',
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'http://slashdot.org')
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self.view.Show(true)
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else:
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self.logprint(self.BrowserSettings % ('http://slashdot.org'))
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os.system(self.BrowserSettings % ('http://slashdot.org'))
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self.logprint("OK")
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def OnViewIndex(self, event):
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self.logprint("Starting browser... Please wait.")
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self.timer = QuickTimer(self.DoViewIndex)
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def DoViewArticle(self):
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if self.current<0: return
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url = self.url[self.current]
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if self.UseInternal:
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self.view = HTMLTextView(self, -1, url, url)
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self.view.Show(true)
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else:
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self.logprint(self.BrowserSettings % (url))
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os.system(self.BrowserSettings % (url))
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self.logprint("OK")
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def OnViewArticle(self, event):
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self.logprint("Starting browser... Please wait.")
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self.timer = QuickTimer(self.DoViewArticle)
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def OnBrowserInternal(self, event):
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if self.mainmenu.Checked(220):
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self.UseInternal = 1
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else:
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self.UseInternal = 0
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def OnBrowserSettings(self, event):
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dlg = wxTextEntryDialog(self, "Enter command to view URL.\nUse %s as a placeholder for the URL.", "", self.BrowserSettings);
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if dlg.ShowModal() == wxID_OK:
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self.BrowserSettings = dlg.GetValue()
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def OnAbout(self, event):
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dlg = wxMessageDialog(self, __doc__, "wxSlash", wxOK | wxICON_INFORMATION)
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dlg.ShowModal()
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def OnItemSelected(self, event):
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self.current = event.m_itemIndex
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self.logprint("URL: %s" % (self.url[self.current]))
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def OnCloseWindow(self, event):
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self.Destroy()
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class MyApp(wxApp):
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def OnInit(self):
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frame = AppFrame(NULL, -1, "Slashdot Breaking News")
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frame.Show(true)
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self.SetTopWindow(frame)
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return true
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#
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# main thingy
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#
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if __name__ == '__main__':
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app = MyApp(0)
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app.MainLoop()
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Reference in New Issue
Block a user