!date
import numpy as np, matplotlib.pyplot as plt, mpld3
%matplotlib inline
mpld3.enable_notebook()

from mpld3 import utils, plugins

class ClickInfo(plugins.PluginBase):
    """Plugin for getting info on click"""

    JAVASCRIPT = """
    mpld3.register_plugin("clickinfo", ClickInfo);
    ClickInfo.prototype = Object.create(mpld3.Plugin.prototype);
    ClickInfo.prototype.constructor = ClickInfo;
    ClickInfo.prototype.requiredProps = ["ids"];
    function ClickInfo(fig, props){
        mpld3.Plugin.call(this, fig, props);
    };

    ClickInfo.prototype.draw = function(){
        this.props.ids.forEach(function(id, i) {
            var obj = mpld3.get_element(id);
            obj.elements().on("mousedown",
                              function(d){alert("clicked on bar[" + i + "]");});
                              });
    }
    """
    def __init__(self, bars):
        self.dict_ = {"type": "clickinfo",
                      "ids": [utils.get_id(bar) for bar in bars]}
x = range(0,10)
y = np.random.rand(10)

fig, ax = plt.subplots()
bars = ax.bar(x, y)

plugins.connect(fig, ClickInfo(bars))