"""

Dialog that allows user to specify a new config file section name.

Used to get new highlight theme and keybinding set names.

"""

from Tkinter import *

import tkMessageBox

class GetCfgSectionNameDialog(Toplevel):

    def __init__(self,parent,title,message,usedNames):

        """

        message - string, informational message to display

        usedNames - list, list of names already in use for validity check

        """

        Toplevel.__init__(self, parent)

        self.configure(borderwidth=5)

        self.resizable(height=FALSE,width=FALSE)

        self.title(title)

        self.transient(parent)

        self.grab_set()

        self.protocol("WM_DELETE_WINDOW", self.Cancel)

        self.parent = parent

        self.message=message

        self.usedNames=usedNames

        self.result=''

        self.CreateWidgets()

        self.withdraw() #hide while setting geometry

        self.update_idletasks()

        #needs to be done here so that the winfo_reqwidth is valid

        self.messageInfo.config(width=self.frameMain.winfo_reqwidth())

        self.geometry("+%d+%d" %

            ((parent.winfo_rootx()+((parent.winfo_width()/2)

                -(self.winfo_reqwidth()/2)),

              parent.winfo_rooty()+((parent.winfo_height()/2)

                -(self.winfo_reqheight()/2)) )) ) #centre dialog over parent

        self.deiconify() #geometry set, unhide

        self.wait_window()

    def CreateWidgets(self):

        self.name=StringVar(self)

        self.fontSize=StringVar(self)

        self.frameMain = Frame(self,borderwidth=2,relief=SUNKEN)

        self.frameMain.pack(side=TOP,expand=TRUE,fill=BOTH)

        self.messageInfo=Message(self.frameMain,anchor=W,justify=LEFT,padx=5,pady=5,

                text=self.message)#,aspect=200)

        entryName=Entry(self.frameMain,textvariable=self.name,width=30)

        entryName.focus_set()

        self.messageInfo.pack(padx=5,pady=5)#,expand=TRUE,fill=BOTH)

        entryName.pack(padx=5,pady=5)

        frameButtons=Frame(self)

        frameButtons.pack(side=BOTTOM,fill=X)

        self.buttonOk = Button(frameButtons,text='Ok',

                width=8,command=self.Ok)

        self.buttonOk.grid(row=0,column=0,padx=5,pady=5)

        self.buttonCancel = Button(frameButtons,text='Cancel',

                width=8,command=self.Cancel)

        self.buttonCancel.grid(row=0,column=1,padx=5,pady=5)

    def NameOk(self):

        #simple validity check for a sensible

        #ConfigParser file section name

        nameOk=1

        name=self.name.get()

        name.strip()

        if not name: #no name specified

            tkMessageBox.showerror(title='Name Error',

                    message='No name specified.', parent=self)

            nameOk=0

        elif len(name)>30: #name too long

            tkMessageBox.showerror(title='Name Error',

                    message='Name too long. It should be no more than '+

                    '30 characters.', parent=self)

            nameOk=0

        elif name in self.usedNames:

            tkMessageBox.showerror(title='Name Error',

                    message='This name is already in use.', parent=self)

            nameOk=0

        return nameOk

    def Ok(self, event=None):

        if self.NameOk():

            self.result=self.name.get().strip()

            self.destroy()

    def Cancel(self, event=None):

        self.result=''

        self.destroy()

if __name__ == '__main__':

    #test the dialog

    root=Tk()

    def run():

        keySeq=''

        dlg=GetCfgSectionNameDialog(root,'Get Name',

                'The information here should need to be word wrapped. Test.')

        print dlg.result

    Button(root,text='Dialog',command=run).pack()

    root.mainloop()