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"""
a couple of classes for implementing partial tabbed-page like behaviour
"""
from Tkinter import *
class InvalidTabPage(Exception): pass
class AlreadyExists(Exception): pass
class PageTab(Frame):
"""
a 'page tab' like framed button
"""
def __init__(self,parent):
Frame.__init__(self, parent,borderwidth=2,relief=RIDGE)
self.button=Radiobutton(self,padx=5,pady=5,takefocus=FALSE,
indicatoron=FALSE,highlightthickness=0,
borderwidth=0,selectcolor=self.cget('bg'))
self.button.pack()
class TabPageSet(Frame):
"""
a set of 'pages' with TabButtons for controlling their display
"""
def __init__(self,parent,pageNames=[],**kw):
"""
pageNames - a list of strings, each string will be the dictionary key
to a page's data, and the name displayed on the page's tab. Should be
specified in desired page order. The first page will be the default
and first active page.
"""
Frame.__init__(self, parent, kw)
self.grid_location(0,0)
self.columnconfigure(0,weight=1)
self.rowconfigure(1,weight=1)
self.tabBar=Frame(self)
self.tabBar.grid(row=0,column=0,sticky=EW)
self.activePage=StringVar(self)
self.defaultPage=''
self.pages={}
for name in pageNames:
self.AddPage(name)
def ChangePage(self,pageName=None):
if pageName:
if pageName in self.pages.keys():
self.activePage.set(pageName)
else:
raise InvalidTabPage, 'Invalid TabPage Name'
## pop up the active 'tab' only
for page in self.pages.keys():
self.pages[page]['tab'].config(relief=RIDGE)
self.pages[self.GetActivePage()]['tab'].config(relief=RAISED)
## switch page
self.pages[self.GetActivePage()]['page'].lift()
def GetActivePage(self):
return self.activePage.get()
def AddPage(self,pageName):
if pageName in self.pages.keys():
raise AlreadyExists, 'TabPage Name Already Exists'
self.pages[pageName]={'tab':PageTab(self.tabBar),
'page':Frame(self,borderwidth=2,relief=RAISED)}
self.pages[pageName]['tab'].button.config(text=pageName,
command=self.ChangePage,variable=self.activePage,
value=pageName)
self.pages[pageName]['tab'].pack(side=LEFT)
self.pages[pageName]['page'].grid(row=1,column=0,sticky=NSEW)
if len(self.pages)==1: # adding first page
self.defaultPage=pageName
self.activePage.set(self.defaultPage)
self.ChangePage()
def RemovePage(self,pageName):
if not pageName in self.pages.keys():
raise InvalidTabPage, 'Invalid TabPage Name'
self.pages[pageName]['tab'].pack_forget()
self.pages[pageName]['page'].grid_forget()
self.pages[pageName]['tab'].destroy()
self.pages[pageName]['page'].destroy()
del(self.pages[pageName])
# handle removing last remaining, or default, or active page
if not self.pages: # removed last remaining page
self.defaultPage=''
return
if pageName==self.defaultPage: # set a new default page
self.defaultPage=\
self.tabBar.winfo_children()[0].button.cget('text')
if pageName==self.GetActivePage(): # set a new active page
self.activePage.set(self.defaultPage)
self.ChangePage()
if __name__ == '__main__':
#test dialog
root=Tk()
tabPage=TabPageSet(root,pageNames=['Foobar','Baz'])
tabPage.pack(expand=TRUE,fill=BOTH)
Label(tabPage.pages['Foobar']['page'],text='Foo',pady=20).pack()
Label(tabPage.pages['Foobar']['page'],text='Bar',pady=20).pack()
Label(tabPage.pages['Baz']['page'],text='Baz').pack()
entryPgName=Entry(root)
buttonAdd=Button(root,text='Add Page',
command=lambda:tabPage.AddPage(entryPgName.get()))
buttonRemove=Button(root,text='Remove Page',
command=lambda:tabPage.RemovePage(entryPgName.get()))
labelPgName=Label(root,text='name of page to add/remove:')
buttonAdd.pack(padx=5,pady=5)
buttonRemove.pack(padx=5,pady=5)
labelPgName.pack(padx=5)
entryPgName.pack(padx=5)
tabPage.ChangePage()
root.mainloop()
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