/backbone-d3.js

(function() {
  Backbone.d3 = {
		PlotView: Backbone.View.extend({
      initialize: function(collection, settings) {
        _.bindAll(this);
        this.collection = collection;
        this.collection.bind('change', this.redraw);
        this.collection.bind('add', this.redraw);
        this.collection.bind('remove', this.redraw);
        this.collection.bind('reset', this.draw);

        this.settings = settings || {};
        var divname = this.settings.div || "#plot";
        this.div = d3.select(divname)
        // time taken in transitions
        this.duration = this.settings.duration || 500;
        this.collection.fetch();

        // TODO: make the chart a member var of the View
        // for easier access/fine grained control
      },
      plotdata: function() {
        var data = [];
        this.collection.forEach(function(datapoint) {
          data.push(datapoint.get('value'));
        })
        return data;
      },
      draw: function() {
        // Draw the plot
        if (this.plotdata().length > 0) {
          this.plot({
            newPlot: true
          });
          this.caption();
        }
      },
      redraw: function() {
        // transition the plot
        this.plot({
          newPlot: false
        });
      },
      plot: function() {
    		if (console){	console.log("Not implemented in base class"); }
        return;
      },
      caption: function(){
        if (this.settings.caption || this.collection.caption){
          var caption = this.settings.caption || this.collection.caption;
          if (typeof Markdown == "object") {
            try {
              var converter = Markdown.getSanitizingConverter();
              caption = converter.makeHtml(caption);
            } catch (err) {
              // do nothing
              var pass = true;
            };
          }
          var captiondiv = $('<div/>', {class: "caption", html: caption});
          $(this.settings.div).append(captiondiv);
        }
      }
    }),
    PlotCollection: Backbone.Collection.extend({
      initialize: function(models, settings) {
        this.settings = settings || {};
        this.plottype = this.settings.plottype || this.plottype || "bar";
        this.caption = this.settings.caption || false;
        if (models) this.reset(models, {silent: true});
      }
    }),
    Canned: {}
  }
})();