from bokeh.models.widgets import TextInput

plsri = TextInput(value=" ", title="Puls:")  #takes the input
rw_prfi= TextInput(value=" ", title="Prof:")
pdi = TextInput(value=" ", title="Pd:")
pd_deri = TextInput(value=" ", title="Pd Derv:")

s2= ColumnDataSource(     #the data is fetched and manipulated from a csv file
        data=dict(
            x=pd,
            y=pd_der,
            plsr1=plsr,
            rw_prf1=rw_prf,
            pd1=pd,
            pd_der1=pd_der,
        )
    )

def callback(source=s2):
    data=source.get('data')
    plsr,rw_prf,pd,pd_der=data['plsr1'],data['rw_prf1'], data['pd1'],data['pd_der1']
    plsr.append(plsri)
    rw_prf.append(rw_prfi)
    pd.append(pdi)
    pd_der.append(pd_deri)
    source.trigger('change')

hover1 = HoverTool(tooltips=[
            ("Pulsar", "@plsr1"),
            ("Raw Profiles", "@rw_prf1"),
            ("Period","@pd1"),
            ("Period Derivative","@pd_der1"),
]
)
tool1=[PanTool(),BoxSelectTool(),hover1,WheelZoomTool(),BoxZoomTool(),ResetTool()]
p5= figure(plot_width=800, plot_height=300,tools=tool1,title="Point Plot")
p5.circle('pd1', 'pd_der1', size=15,color='green',line_color='blue', source=s2)
p5.xaxis.axis_label ="Period"
p5.yaxis.axis_label ="Period Derivative"
p5.background_fill_color='black'
p5.xaxis.major_label_text_color = "green"
p5.yaxis.major_label_text_color = "green"

from bokeh.models.widgets import Button
toggle = Button(label="Add Point", type="success")
toggle.on_click(callback)