Python dash.callback_context() Examples

The following are 2 code examples of dash.callback_context(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module dash , or try the search function .
Example #1
Source File: usage-image-export.py    From dash-cytoscape with MIT License 6 votes vote down vote up 
def get_image(tab, get_jpg_clicks, get_png_clicks, get_svg_clicks):

    # File type to ouput of 'svg, 'png', 'jpg', or 'jpeg' (alias of 'jpg')
    ftype = tab

    # 'store': Stores the image data in 'imageData' !only jpg/png are supported
    # 'download'`: Downloads the image as a file with all data handling
    # 'both'`: Stores image data and downloads image as file.
    action = 'store'

    ctx = dash.callback_context
    if ctx.triggered:
        input_id = ctx.triggered[0]["prop_id"].split(".")[0]

        if input_id != "tabs":
            action = "download"
            ftype = input_id.split("-")[-1]

            # random print statement needed to pass pylint
            print(get_jpg_clicks, get_png_clicks, get_svg_clicks)

    return {
        'type': ftype,
        'action': action
        }
Example #2
Source File: last_clicked_button.py    From dash-docs with MIT License 5 votes vote down vote up 
def display(btn1, btn2, btn3):
    ctx = dash.callback_context

    if not ctx.triggered:
        button_id = 'No clicks yet'
    else:
        button_id = ctx.triggered[0]['prop_id'].split('.')[0]

    ctx_msg = json.dumps({
        'states': ctx.states,
        'triggered': ctx.triggered,
        'inputs': ctx.inputs
    }, indent=2)

    return html.Div([
        html.Table([
            html.Tr([html.Th('Button 1'),
                     html.Th('Button 2'),
                     html.Th('Button 3'),
                     html.Th('Most Recent Click')]),
            html.Tr([html.Td(btn1 or 0),
                     html.Td(btn2 or 0),
                     html.Td(btn3 or 0),
                     html.Td(button_id)])
        ]),
        html.Pre(ctx_msg)
    ])