cleaner tabbed-page mini implementation through classes
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Steven M. Gava
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1691bd9f1e
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##---------------------------------------------------------------------------##
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##
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## pyChing -- a Python program to cast and interpret I Ching hexagrams
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##
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## Copyright (C) 1999,2000 Stephen M. Gava
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##
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## This program is free software; you can redistribute it and/or modify
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## it under the terms of the GNU General Public License as published by
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## the Free Software Foundation; either version 2 of the License, or
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## (at your option) any later version.
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##
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## This program is distributed in the hope that it will be of some
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## interest to somebody, but WITHOUT ANY WARRANTY; without even the
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## implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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## See the GNU General Public License for more details.
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##
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## You should have received a copy of the GNU General Public License
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## along with this program; see the file COPYING or COPYING.txt. If not,
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## write to the Free Software Foundation, Inc.,
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## 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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## The license can also be found at the GNU/FSF website: http://www.gnu.org
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##
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## Stephen M. Gava
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## <elguavas@users.sourceforge.net>
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## http://pyching.sourgeforge.net
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##
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##---------------------------------------------------------------------------##
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"""
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a couple of classes for implementing partial tabbed-page like behaviour
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"""
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from Tkinter import *
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class PageTab(Frame):
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"""
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a 'page tab' like framed button
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"""
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def __init__(self,parent):
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Frame.__init__(self, parent,borderwidth=2,relief=RIDGE)
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self.button=Radiobutton(self,padx=5,pady=5,takefocus=FALSE,
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underline=0,indicatoron=FALSE,highlightthickness=0,
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borderwidth=0,selectcolor=self.cget('bg'))
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self.button.pack()
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class TabPageSet(Frame):
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"""
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a set of 'pages' with TabButtons for controlling their display
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"""
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def __init__(self,parent,pageNames,**kw):
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"""
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pageNames - a list of strings, each string will be the dictionary key
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to a page's data, and the name displayed on the page's tab. Should be
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specified in desired page order. The first page will be the default
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and first active page.
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"""
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Frame.__init__(self, parent, kw)
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self.grid_location(0,0)
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self.columnconfigure(0,weight=1)
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self.rowconfigure(1,weight=1)
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self.tabBar=Frame(self)
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self.tabBar.grid(row=0,column=0,sticky=EW)
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self.activePage=StringVar(self)
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self.defaultPage=''
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self.pages={}
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for name in pageNames:
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self.AddPage(name)
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def ChangePage(self,pageName=None):
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if pageName:
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if pageName in self.pages.keys():
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self.activePage.set(pageName)
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else:
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raise 'Invalid TabPage Name'
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## pop up the active 'tab' only
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for page in self.pages.keys():
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self.pages[page]['tab'].config(relief=RIDGE)
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self.pages[self.GetActivePage()]['tab'].config(relief=RAISED)
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## switch page
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self.pages[self.GetActivePage()]['page'].lift()
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def GetActivePage(self):
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return self.activePage.get()
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def AddPage(self,pageName):
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if pageName in self.pages.keys():
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raise 'TabPage Name Already Exists'
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self.pages[pageName]={'tab':PageTab(self.tabBar),
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'page':Frame(self,borderwidth=2,relief=RAISED)}
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self.pages[pageName]['tab'].button.config(text=pageName,
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command=self.ChangePage,variable=self.activePage,
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value=pageName)
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self.pages[pageName]['tab'].pack(side=LEFT)
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self.pages[pageName]['page'].grid(row=1,column=0,sticky=NSEW)
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if len(self.pages)==1: # adding first page
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self.defaultPage=pageName
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self.activePage.set(self.defaultPage)
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self.ChangePage()
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def RemovePage(self,pageName):
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if not pageName in self.pages.keys():
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raise 'Invalid TabPage Name'
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self.pages[pageName]['tab'].pack_forget()
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self.pages[pageName]['page'].grid_forget()
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self.pages[pageName]['tab'].destroy()
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self.pages[pageName]['page'].destroy()
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del(self.pages[pageName])
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# handle removing last remaining, or default, or active page
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if not self.pages: # removed last remaining page
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self.defaultPage=''
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return
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if pageName==self.defaultPage: # set a new default page
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self.defaultPage=\
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self.tabBar.winfo_children()[0].button.cget('text')
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if pageName==self.GetActivePage(): # set a new active page
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self.activePage.set(self.defaultPage)
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self.ChangePage()
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if __name__ == '__main__':
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#test the dialog
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root=Tk()
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tabPage=TabPageSet(root,pageNames=['Foobar','Baz'])
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tabPage.pack(expand=TRUE,fill=BOTH)
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Label(tabPage.pages['Foobar']['page'],text='Foo',pady=20).pack()
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Label(tabPage.pages['Foobar']['page'],text='Bar',pady=20).pack()
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Label(tabPage.pages['Baz']['page'],text='Baz').pack()
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entryPgName=Entry(root)
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buttonAdd=Button(root,text='Add Page',
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command=lambda:tabPage.AddPage(entryPgName.get()))
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buttonRemove=Button(root,text='Remove Page',
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command=lambda:tabPage.RemovePage(entryPgName.get()))
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labelPgName=Label(root,text='name of page to add/remove:')
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buttonAdd.pack(padx=5,pady=5)
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buttonRemove.pack(padx=5,pady=5)
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labelPgName.pack(padx=5)
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entryPgName.pack(padx=5)
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root.mainloop()
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