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Text File  |  2003-12-30  |  4KB  |  114 lines
  1. """
  2. a couple of classes for implementing partial tabbed-page like behaviour
  3. """
  4.  
  5. from Tkinter import *
  6.  
  7. class InvalidTabPage(Exception): pass
  8. class AlreadyExists(Exception): pass
  9.  
  10. class PageTab(Frame):
  11.     """
  12.     a 'page tab' like framed button
  13.     """
  14.     def __init__(self,parent):
  15.         Frame.__init__(self, parent,borderwidth=2,relief=RIDGE)
  16.         self.button=Radiobutton(self,padx=5,pady=5,takefocus=FALSE,
  17.                 indicatoron=FALSE,highlightthickness=0,
  18.                 borderwidth=0,selectcolor=self.cget('bg'))
  19.         self.button.pack()
  20.  
  21. class TabPageSet(Frame):
  22.     """
  23.     a set of 'pages' with TabButtons for controlling their display
  24.     """
  25.     def __init__(self,parent,pageNames=[],**kw):
  26.         """
  27.         pageNames - a list of strings, each string will be the dictionary key
  28.         to a page's data, and the name displayed on the page's tab. Should be
  29.         specified in desired page order. The first page will be the default
  30.         and first active page.
  31.         """
  32.         Frame.__init__(self, parent, kw)
  33.         self.grid_location(0,0)
  34.         self.columnconfigure(0,weight=1)
  35.         self.rowconfigure(1,weight=1)
  36.         self.tabBar=Frame(self)
  37.         self.tabBar.grid(row=0,column=0,sticky=EW)
  38.         self.activePage=StringVar(self)
  39.         self.defaultPage=''
  40.         self.pages={}
  41.         for name in pageNames:
  42.             self.AddPage(name)
  43.  
  44.     def ChangePage(self,pageName=None):
  45.         if pageName:
  46.             if pageName in self.pages.keys():
  47.                 self.activePage.set(pageName)
  48.             else:
  49.                 raise InvalidTabPage, 'Invalid TabPage Name'
  50.         ## pop up the active 'tab' only
  51.         for page in self.pages.keys():
  52.             self.pages[page]['tab'].config(relief=RIDGE)
  53.         self.pages[self.GetActivePage()]['tab'].config(relief=RAISED)
  54.         ## switch page
  55.         self.pages[self.GetActivePage()]['page'].lift()
  56.  
  57.     def GetActivePage(self):
  58.         return self.activePage.get()
  59.  
  60.     def AddPage(self,pageName):
  61.         if pageName in self.pages.keys():
  62.             raise AlreadyExists, 'TabPage Name Already Exists'
  63.         self.pages[pageName]={'tab':PageTab(self.tabBar),
  64.                 'page':Frame(self,borderwidth=2,relief=RAISED)}
  65.         self.pages[pageName]['tab'].button.config(text=pageName,
  66.                 command=self.ChangePage,variable=self.activePage,
  67.                 value=pageName)
  68.         self.pages[pageName]['tab'].pack(side=LEFT)
  69.         self.pages[pageName]['page'].grid(row=1,column=0,sticky=NSEW)
  70.         if len(self.pages)==1: # adding first page
  71.             self.defaultPage=pageName
  72.             self.activePage.set(self.defaultPage)
  73.             self.ChangePage()
  74.  
  75.     def RemovePage(self,pageName):
  76.         if not pageName in self.pages.keys():
  77.             raise InvalidTabPage, 'Invalid TabPage Name'
  78.         self.pages[pageName]['tab'].pack_forget()
  79.         self.pages[pageName]['page'].grid_forget()
  80.         self.pages[pageName]['tab'].destroy()
  81.         self.pages[pageName]['page'].destroy()
  82.         del(self.pages[pageName])
  83.         # handle removing last remaining, or default, or active page
  84.         if not self.pages: # removed last remaining page
  85.             self.defaultPage=''
  86.             return
  87.         if pageName==self.defaultPage: # set a new default page
  88.             self.defaultPage=\
  89.                 self.tabBar.winfo_children()[0].button.cget('text')
  90.         if pageName==self.GetActivePage(): # set a new active page
  91.             self.activePage.set(self.defaultPage)
  92.         self.ChangePage()
  93.  
  94. if __name__ == '__main__':
  95.     #test dialog
  96.     root=Tk()
  97.     tabPage=TabPageSet(root,pageNames=['Foobar','Baz'])
  98.     tabPage.pack(expand=TRUE,fill=BOTH)
  99.     Label(tabPage.pages['Foobar']['page'],text='Foo',pady=20).pack()
  100.     Label(tabPage.pages['Foobar']['page'],text='Bar',pady=20).pack()
  101.     Label(tabPage.pages['Baz']['page'],text='Baz').pack()
  102.     entryPgName=Entry(root)
  103.     buttonAdd=Button(root,text='Add Page',
  104.             command=lambda:tabPage.AddPage(entryPgName.get()))
  105.     buttonRemove=Button(root,text='Remove Page',
  106.             command=lambda:tabPage.RemovePage(entryPgName.get()))
  107.     labelPgName=Label(root,text='name of page to add/remove:')
  108.     buttonAdd.pack(padx=5,pady=5)
  109.     buttonRemove.pack(padx=5,pady=5)
  110.     labelPgName.pack(padx=5)
  111.     entryPgName.pack(padx=5)
  112.     tabPage.ChangePage()
  113.     root.mainloop()
  114.