require 'daru/view'

Daru::View.plotting_library = :googlecharts

data = [
          ['Year', 'Sales', 'Expenses'],
          ['2013',  1000,      400],
          ['2014',  1170,      460],
          ['2015',  660,       1120],
          ['2016',  1030,      540]
  ]
user_option = {
    listeners: {
        page: "alert('The user is navigating to page ' + (e['page'] + 1));",
        select: "alert('A table row was selected');"
    }
}
column_chart_table = Daru::View::Table.new(data, {page: 'enable', pageSize: 2}, user_option)
column_chart_table.show_in_iruby

user_options = {
    listeners: {
        select: " var selection = chart.getSelection();
                  var selectedValue = data_table.getFormattedValue(selection[0].row, 0);
                  alert('You selected ' + selectedValue + ' year');",
# This will export the chart to PDF in web frameworks but in IRuby notebook, js dependency of jsPDF is not loaded properly.
#     ready: "var doc = new jsPDF();
#             doc.addImage(chart.getImageURI(), 0, 0);
#             doc.save('chart.pdf');"
    }
}
column_chart = Daru::View::Plot.new(column_chart_table.table, { type: :column }, user_options)
column_chart.show_in_iruby

user_options = {
  listeners: {
    select: "alert('A table row was selected');"
  }
}
column_chart = Daru::View::Plot.new(column_chart_table.table, {type: :area}, user_options)
column_chart.show_in_iruby