Added Event Handling examples

demo_rails/app/assets/javascripts/handling_events.coffee

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+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://coffeescript.org/

demo_rails/app/assets/stylesheets/handling_events.scss

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+// Place all the styles related to the HandlingEvents controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: http://sass-lang.com/

demo_rails/app/controllers/handling_events_controller.rb

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+class HandlingEventsController < ApplicationController
+  def handling_events
+    Daru::View.plotting_library = :googlecharts
+
+    data = [
+            ['Year', 'Sales', 'Expenses'],
+            ['2013',  1000,      400],
+            ['2014',  1170,      460],
+            ['2015',  660,       1120],
+            ['2016',  1030,      540]
+    ]
+    user_options = {
+        listeners: {
+            page: "alert('The user is navigating to page ' + (e['page'] + 1));",
+            select: "alert('A table row was selected');"
+        }
+    }
+    @table = Daru::View::Table.new(data, {page: 'enable', pageSize: 2}, user_options)
+
+    user_options_chart = {
+        listeners: {
+            select: " var selection = chart.getSelection();
+                      var selectedValue = data_table.getFormattedValue(selection[0].row, 0);
+                      alert('You selected ' + selectedValue + ' year');",
+            # exports the chart to PDF format
+            ready: "var doc = new jsPDF();
+                    doc.addImage(chart.getImageURI(), 0, 0);
+                    doc.save('chart.pdf');"
+        }
+    }
+    @column_chart = Daru::View::Plot.new(@table.table, { type: :column, width: 800 }, user_options_chart)
+
+    render "handling_events" , layout: "googlecharts_layout"
+  end
+end

demo_rails/app/helpers/handling_events_helper.rb

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+module HandlingEventsHelper
+end

demo_rails/app/views/handling_events/handling_events.erb

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+<h3> Handling Events in Google Table</h3>
+<p>
+  <b>Data : </b>
+  <%=raw @table.data %>
+  <br>
+  <b>Options</b>
+  <%=raw @table.options %>
+  <br>
+  <b>Table : </b>
+  <br>
+  <%=raw @table.div %>
+</p>
+<br>
+
+<h3> Handling events in Google charts</h3>
+<p>
+  <b>Data : </b>
+  <%=raw @column_chart.data %>
+  <br>
+  <b>Options</b>
+  <%=raw @column_chart.options %>
+  <br>
+  <b>Chart : </b>
+  <br>
+  <%=raw @column_chart.div %>
+</p>
+<br>

demo_rails/config/routes.rb

@@ -8,4 +8,5 @@
   get '/highchartscss', to: 'highcharts_css#highcharts_css'
   get '/highchartstockmap', to: 'highchart_stock_map#highchart_stock_map'
   get '/multiplecharts', to: 'multiple_charts#multiple_charts'
+  get '/handlingevents', to: 'handling_events#handling_events'
 end

demo_rails/test/controllers/handling_events_controller_test.rb

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+require 'test_helper'
+
+class HandlingEventsControllerTest < ActionDispatch::IntegrationTest
+  # test "the truth" do
+  #   assert true
+  # end
+end