#!/usr/bin/env python

from bokeh.layouts import column#, layout
from bokeh.models import Button, ColumnDataSource
from bokeh.models.widgets import Div, Panel, Tabs
from bokeh.plotting import curdoc
from bokeh.plotting import figure

def add_button():
    print("adding")

    data = {
        "x": [0, 1, 2],
        "y": [2, 0, 1]
    }
    source = ColumnDataSource(data=data)

    fig = figure()
    fig.step(x="x", y="y", source=source, mode="after")
    fig.circle(x="x", y="y", source=source)
    pan = Panel(child=fig, title="test", closable=True)
    tab = [pan]

    size = 25
    height, width = fig.height, fig.width
    btn = Button(label="X", button_type="danger", margin=(-height+size, 0, 0, width-size), width=0, height=0, width_policy="fixed", height_policy="fixed")

    layout.children.append(Tabs(tabs=tab))
    layout.children.append(btn)


button = Button(label="Click to add", button_type="success")
button.on_click(add_button)
layout = column(button)
curdoc().add_root(layout)