Function compute_input_state_grouping_indices

dash/dependencies.py:305–329

(input_state_grouping)

def compute_input_state_grouping_indices(input_state_grouping):
    # Flatten grouping of Input and State dependencies into a flat list
    flat_deps = flatten_grouping(input_state_grouping)

    # Split into separate flat lists of Input and State dependencies
    flat_inputs = [dep for dep in flat_deps if isinstance(dep, Input)]
    flat_state = [dep for dep in flat_deps if isinstance(dep, State)]

    # For each entry in the grouping, compute the index into the
    # concatenation of flat_inputs and flat_state
    total_inputs = len(flat_inputs)
    input_count = 0
    state_count = 0
    flat_inds = []
    for dep in flat_deps:
        if isinstance(dep, Input):
            flat_inds.append(input_count)
            input_count += 1
        else:
            flat_inds.append(total_inputs + state_count)
            state_count += 1

    # Reshape this flat list of indices to match the input grouping
    grouping_inds = make_grouping_by_index(input_state_grouping, flat_inds)
    return flat_inputs, flat_state, grouping_inds


def handle_grouped_callback_args(args, kwargs):