further work on config system and config saving

Lib/idlelib/configHelpSourceEdit.py

@@ -0,0 +1,119 @@
+"""
+Dialog that allows user to specify or edit the parameters for a user configured
+help source.
+"""
+from Tkinter import *
+import tkMessageBox
+import os
+
+class GetHelpSourceDialog(Toplevel):
+    def __init__(self,parent,title,menuItem='',filePath=''):
+        """
+        menuItem - string, the menu item to edit, if any
+        filePath - string, the help file path to edit, if any
+        """
+        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.result=None
+        self.CreateWidgets()
+        self.withdraw() #hide while setting geometry
+        self.update_idletasks()
+        #needs to be done here so that the winfo_reqwidth is valid
+        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.menu=StringVar(self)
+        self.path=StringVar(self)
+        self.fontSize=StringVar(self)
+        self.frameMain = Frame(self,borderwidth=2,relief=SUNKEN)
+        self.frameMain.pack(side=TOP,expand=TRUE,fill=BOTH)
+        labelMenu=Label(self.frameMain,anchor=W,justify=LEFT,
+                text='Menu Item:')
+        self.entryMenu=Entry(self.frameMain,textvariable=self.menu,width=30)
+        self.entryMenu.focus_set()
+        labelPath=Label(self.frameMain,anchor=W,justify=LEFT,
+                text='Help File Path:')
+        self.entryPath=Entry(self.frameMain,textvariable=self.path,width=40)
+        self.entryMenu.focus_set()
+        labelMenu.pack(anchor=W,padx=5,pady=3)
+        self.entryMenu.pack(anchor=W,padx=5,pady=3)
+        labelPath.pack(anchor=W,padx=5,pady=3)
+        self.entryPath.pack(anchor=W,padx=5,pady=3)
+        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 MenuOk(self):
+        #simple validity check for a sensible 
+        #menu item name
+        menuOk=1
+        menu=self.menu.get()
+        menu.strip()
+        if not menu: #no menu item specified
+            tkMessageBox.showerror(title='Menu Item Error',
+                    message='No menu item specified.')
+            self.entryMenu.focus_set()
+            menuOk=0
+        elif len(menu)>30: #menu item name too long
+            tkMessageBox.showerror(title='Menu Item Error',
+                    message='Menu item too long. It should be no more '+
+                    'than 30 characters.')
+            self.entryMenu.focus_set()
+            menuOk=0
+        return menuOk
+    
+    def PathOk(self):
+        #simple validity check for menu file path 
+        pathOk=1
+        path=self.path.get()
+        path.strip()
+        if not path: #no path specified
+            tkMessageBox.showerror(title='File Path Error',
+                    message='No help file path specified.')
+            self.entryPath.focus_set()
+            pathOk=0
+        elif not os.path.exists(path):
+            tkMessageBox.showerror(title='File Path Error',
+                    message='Help file path does not exist.')
+            self.entryPath.focus_set()
+            pathOk=0
+        return pathOk
+            
+    def Ok(self, event=None):
+        if self.MenuOk():
+            if self.PathOk():
+                self.result=( self.menu.get().strip(),self.path.get().strip() ) 
+                self.destroy()
+        
+    def Cancel(self, event=None):
+        self.result=None
+        self.destroy()
+
+if __name__ == '__main__':
+    #test the dialog
+    root=Tk()
+    def run():
+        keySeq=''
+        dlg=GetHelpSourceDialog(root,'Get Help Source')
+        print dlg.result
+    Button(root,text='Dialog',command=run).pack()
+    root.mainloop()
+    
+