Programmatic links in a TKinter TextBox

[Jeff Epler]

Based on the location where the user clicked, you can find the
associated tags.  Then you must loop through them to find the one that
gives the "href" value.

Jeff
:r /tmp/link.py

import Tkinter

app = Tkinter.Tk()
text = Tkinter.Text(app)
text.pack()

def click(event):
    #this doesn't work
    print event
    w = event.widget
    x, y = event.x, event.y
    tags = w.tag_names("@%d,%d" % (x, y))
    for t in tags:
        if t.startswith("href:"):
            print "clicked href %s" % t[5:]
            break
    else:
        print "clicked without href"
    return "break"

def show_hand_cursor(event):
    event.widget.configure(cursor="hand1")
def show_arrow_cursor(event):
    event.widget.configure(cursor="")

# configure text tag
text.tag_config("a", foreground="blue", underline=1)
text.tag_bind("a", "<Enter>", show_hand_cursor)
text.tag_bind("a", "<Leave>", show_arrow_cursor)
text.tag_bind("a", "<Button-1>", click)
text.config(cursor="arrow")

#add text
text.insert(Tkinter.INSERT, "click here!", "a")
text.insert(Tkinter.INSERT, "\n")

#add a link with data
href = "http://www.example.com"
text.insert(Tkinter.END, "this is a ")
text.insert(Tkinter.END, "link", ("a", "href:"+href))


app.mainloop()
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