""" Playing with the popular online spellchecking demo at http://www.broken-notebook.com/spell_checker/ """

import sys
sys.path.append("..")

import pykhtml

def startSpellCheck(browser):
    document = browser.document
    # check if the javascript stuff is finished -- when it is,
    # an anchor with a class name of "check_spelling" will 
    # exist.
    generator = document.getElementsByClass("check_spelling", "a")
    anchors = list(generator)
    if not anchors:
        # if not, try again in 0.2 seconds
        pykhtml.timer(0.2, pykhtml.partial(startSpellCheck, browser))
        return
    # okay, everything is good to go -- insert the text into 
    # the box
    textBox = document.getElementById("spell_checker1")
    textBox.value = "Here we have twow intentionally misplt words"
    # and then click the spellcheck link which will do some
    # AJAXy stuff
    checkSpellingAnchor = anchors[0]
    checkSpellingAnchor.click()
    seeSpellCheckResponse(browser)

def seeSpellCheckResponse(browser):
    document = browser.document
    # check if spellchecking is done (if the textarea has been
    # replaced with a div with a class of edit_box)
    generator = document.getElementsByClass("edit_box", "div")
    divs = list(generator)
    if not divs:
        # if not, try again in 0.2 seconds
        pykhtml.timer(0.2, pykhtml.partial(seeSpellCheckResponse, browser))
        return
    spellCheckedContainer = divs[0]
    # go through each child in the div
    for child in spellCheckedContainer:
        if isinstance(child, pykhtml.dom.Text):
            # if it's a text node it's a collection of 
            # correctly spelt words
            print "correct:", child.value
        else:
            # otherwise it's a <span> that is highlighting
            # an incorrect word
            print "incorrect:", child.text
    pykhtml.stopEventLoop()

def main():
    browser = pykhtml.Browser()
    # the browser is passed as a parameter to `login`
    # when it is called (when the page has loaded)
    browser.load("http://www.broken-notebook.com/spell_checker/", startSpellCheck)
    # kick things off
    pykhtml.startEventLoop()

if __name__ == "__main__":
    main()