"""Support module for page layout inside `Home' web application.

"""

from Apps import page

app = page.Layout()

def page_navibar():

    """Returns application main pages.

    The application main pages are organized as tabs in the

    application navigation bar. There is one tab for each main page

    inside the application.

    """

    names = ['Page1', 'Page2', 'Page3']

    attrs = []

    for i in names:

        attrs.append({'href': '/webenv/?p=' + i.lower()})

    if 'p' in page.qs.keys():

        focus = page.qs['p'][0].lower()

    else:

        focus = ''

    return app.page_navibar(names, attrs, focus)

def page_content():

    """Returns page content.

    The page content is determined from the query string, specifically

    from the value of `p' variable.

    """

    if 'p' in page.qs.keys():

        p = page.qs['p'][0].lower()

    else:

        p = ''

    if p == 'page1':

        output = app.tag_p('', [12, 1], 'Page Empty.')

    elif p == 'page2':

        output = app.tag_p('', [12, 1], 'Page Empty.')

    elif p == 'page3':

        output = app.tag_p({}, [12, 1], 'Page Empty' )

    elif p == 'entry':

        output = app.content_details()

    else:

        output = app.content_list()

    return output

def main():

    """Returns final output."""

    # Define page name. This value is used as reference to determine

    # which application to load and what tab in the navigation bar to

    # focus on.

    app.name = 'Home'

    # Define page title. This value is dislayed on the browser's title

    # bar. Notice that we concatenated the page class default value

    # here.

    app.title += ' :: Home'

    # Define page header. This is the information displayed

    # between the page top and page content.

    app.header = app.logo()

    app.header += app.google_ad_example()

    app.header += app.navibar()

    app.header += app.releases()

    app.header += app.page_links()

    app.header += page_navibar()

    # Define page body. This is the information displayed between the

    # page header and page footer.

    app.body = page_content()

    # Define page footer. This is the information displayed between

    # the page bottom and the page content, the last information

    # displayed in the page.

    app.footer = app.credits()

    # Define page final layout. 

    html = app.page()

    return html