index.py

"""
Main page for pvtools website. Run this script to start.

04/09/2019
toddkarin

"""

import dash
import dash_core_components as dcc
import dash_html_components as html
import dash_bootstrap_components as dbc
# # import dash_table
# import plotly.colors
# import plotly.graph_objs as go
# # import plotly.plotly as py
# from flask_caching import Cache
from dash.dependencies import Input, Output, State
# import numpy as np
# import pvlib
# import nsrdbtools
# import pandas as pd
# import uuid
# import os
# import flask
# import json
# import time
# import datetime

from app import app

# Line is important for Heroku.w
server = app.server

# Load layouts for different pages
import home, pvcz, about, string_length_calculator, pv_climate_stressors


app.layout = html.Div([
    dcc.Location(id='url', refresh=False),
    html.Div(id='page-content',children=[home.layout])
])


header = dbc.Container([
    dbc.Row([
        dbc.Col([
            html.A(
                html.Img(
                    src=app.get_asset_url('LBL_Masterbrand_logo_with_Tagline-01.jpg'),
                    style={'height': 50}),
                href="https://www.lbl.gov/"
            )
            ],width=4),
        dbc.Col([
            html.A(
                html.Img(
                    src=app.get_asset_url('duramat_logo.png'),
                    style={'height': 50}),
                href="https://www.duramat.org/"
            )
            ],width=4)

        ],justify='between')
])

navbar = dbc.NavbarSimple(
    children=[
        dbc.DropdownMenu(
            nav=True,
            in_navbar=True,
            label="Tools",
            children=[
                dbc.DropdownMenuItem("String Length Calculator",href='/string-length-calculator'),
                dbc.DropdownMenuItem("Photovoltaic Climate Stressors",href='/pv-climate-stressors'),
                # dbc.DropdownMenuItem(divider=True),
                # dbc.DropdownMenuItem("Documentation"),
            ],
        ),
        # dbc.NavItem(dbc.NavLink("Contact", href="#")),
    ],
    brand="PVTOOLS",
    brand_href="/",
    sticky="top",
)



@app.callback(Output('page-content', 'children'),
              [Input('url', 'pathname')])
def display_page(pathname):
    if pathname == '/string-length-calculator':
        # body = pvcz.layout
        body = string_length_calculator.layout
    elif pathname == '/pvcz':
        body = pvcz.layout
    elif pathname == '/about':
        body = about.layout
    elif pathname == '/home':
        body = home.layout
    elif pathname == '/pv-climate-stressors':
        body = pv_climate_stressors.layout
    elif pathname == '/':
        body = home.layout
    else:
        body = '404'

    return [header, navbar, body]

if __name__ == '__main__':
    app.run_server(debug=True)