1"""Simple text browser for IDLE
2
3"""
4
5from Tkinter import *
6import tkMessageBox
7
8class TextViewer(Toplevel):
9    """A simple text viewer dialog for IDLE
10
11    """
12    def __init__(self, parent, title, text, modal=True):
13        """Show the given text in a scrollable window with a 'close' button
14
15        """
16        Toplevel.__init__(self, parent)
17        self.configure(borderwidth=5)
18        self.geometry("=%dx%d+%d+%d" % (625, 500,
19                                        parent.winfo_rootx() + 10,
20                                        parent.winfo_rooty() + 10))
21        #elguavas - config placeholders til config stuff completed
22        self.bg = '#ffffff'
23        self.fg = '#000000'
24
25        self.CreateWidgets()
26        self.title(title)
27        self.protocol("WM_DELETE_WINDOW", self.Ok)
28        self.parent = parent
29        self.textView.focus_set()
30        #key bindings for this dialog
31        self.bind('<Return>',self.Ok) #dismiss dialog
32        self.bind('<Escape>',self.Ok) #dismiss dialog
33        self.textView.insert(0.0, text)
34        self.textView.config(state=DISABLED)
35
36        if modal:
37            self.transient(parent)
38            self.grab_set()
39            self.wait_window()
40
41    def CreateWidgets(self):
42        frameText = Frame(self, relief=SUNKEN, height=700)
43        frameButtons = Frame(self)
44        self.buttonOk = Button(frameButtons, text='Close',
45                               command=self.Ok, takefocus=FALSE)
46        self.scrollbarView = Scrollbar(frameText, orient=VERTICAL,
47                                       takefocus=FALSE, highlightthickness=0)
48        self.textView = Text(frameText, wrap=WORD, highlightthickness=0,
49                             fg=self.fg, bg=self.bg)
50        self.scrollbarView.config(command=self.textView.yview)
51        self.textView.config(yscrollcommand=self.scrollbarView.set)
52        self.buttonOk.pack()
53        self.scrollbarView.pack(side=RIGHT,fill=Y)
54        self.textView.pack(side=LEFT,expand=TRUE,fill=BOTH)
55        frameButtons.pack(side=BOTTOM,fill=X)
56        frameText.pack(side=TOP,expand=TRUE,fill=BOTH)
57
58    def Ok(self, event=None):
59        self.destroy()
60
61
62def view_text(parent, title, text, modal=True):
63    return TextViewer(parent, title, text, modal)
64
65def view_file(parent, title, filename, encoding=None, modal=True):
66    try:
67        if encoding:
68            import codecs
69            textFile = codecs.open(filename, 'r')
70        else:
71            textFile = open(filename, 'r')
72    except IOError:
73        import tkMessageBox
74        tkMessageBox.showerror(title='File Load Error',
75                               message='Unable to load file %r .' % filename,
76                               parent=parent)
77    else:
78        return view_text(parent, title, textFile.read(), modal)
79
80
81if __name__ == '__main__':
82    #test the dialog
83    root=Tk()
84    root.title('textView test')
85    filename = './textView.py'
86    text = file(filename, 'r').read()
87    btn1 = Button(root, text='view_text',
88                  command=lambda:view_text(root, 'view_text', text))
89    btn1.pack(side=LEFT)
90    btn2 = Button(root, text='view_file',
91                  command=lambda:view_file(root, 'view_file', filename))
92    btn2.pack(side=LEFT)
93    btn3 = Button(root, text='nonmodal view_text',
94                  command=lambda:view_text(root, 'nonmodal view_text', text,
95                                           modal=False))
96    btn3.pack(side=LEFT)
97    close = Button(root, text='Close', command=root.destroy)
98    close.pack(side=RIGHT)
99    root.mainloop()
100