plugin.js

var log = console.log.bind(console, "HeatMap:");

var HeatMap = Backbone.View.extend({
  initialize: function (args) {

    log('initialize', args); 

    this.workspace = args.workspace;

    this.id = _.uniqueId('heatmap_');
    $(this.el).attr({ id: this.id });

    _.bindAll(this, 'receive_data');

    this.workspace.bind('query:result', this.receive_data);

    this.add_button();

  },

  receive_data: function (args) { log('receive_data', args); },

  add_button: function () {
    var $toolbar_table = $(this.workspace.querytoolbar.el).find('ul.table');
    debugger;
    var $heatmap_li = $('<li class="seperator_vertical"></li>');
    var $heatmap_button = $(
      '<a href="#heatmap" class="heatmap button disabled_toolbar i18n" title="HeatMap"></a>'
    ).css({
      'background-image'    : "url('js/saiku/plugins/Statistics/sigma.png')",
      'background-repeat'   : 'no-repeat',
      'background-position' : '50% 50%',
      'height'              : '32px',
      'margin-top'          : '5px'
    });
    $heatmap_li.append($heatmap_button);
    $toolbar_table.append($heatmap_li);
  }
});

Saiku.events.bind('session:new', function (session) {

  log('session:new');

  var new_workspace = function (args) {
    log('new_workspace');
    if (typeof args.workspace.heatmap === 'undefined') {
      args.workspace.heatmap = new HeatMap({ workspace: args.workspace });
    }
  };

  var clear_workspace = function (args) {
    log('clear_workspace');
    if (typeof args.workspace.heatmap === 'undefined') {
      return;
    }
    var $el = $(args.workspace.heatmap.el);
    if ($el.is(':visible')) {
      $el.parents().find('.workspace_results table').show();
      $el.hide()

      // RESET PLUGIN STATE HERE
    }
  };

  var i, tabs = Saiku.tabs._tabs;

  for (i = 0; i < tabs.length; i++) {
    new_workspace({ workspace: tabs[i] });
  }

  Saiku.session.bind('workspace:new', new_workspace);
  Saiku.session.bind('workspace:clear', clear_workspace);
});