# Code coverage report for lib/components/repeat.js

## Statements: 86.67% (26 / 30) Branches: 85.71% (12 / 14) Functions: 50% (2 / 4) Lines: 88.89% (24 / 27) Ignored: none

All files » lib/components/ » repeat.js

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     var BaseComponent  = require("./base");
    /**
     * TODO: alloc property
     * TODO: chunk property
     */

    function RepeatComponent(options) {
      BaseComponent.call(this, options);
    }

    /**
     */

    module.exports = BaseComponent.extend({

      /**
       */

      // TODO - unbind here

      update: function() {

        if (this._updateListener) this._updateListener.dispose();

        var name      = this.attributes.as,
        source        = this.attributes.each,
        accessor      = this.view.accessor;

        Iif (!source) source = [];

        // note - this should get triggered on rAF
        this._updateListener = accessor.watchEvent(source, "change", function() {
          self.view.runloop.deferOnce(self);
        });

        source = accessor.normalizeCollection(source);

        if (!this._children) this._children = [];
        var self = this;

        for (var i = 0, n = source.length; i < n; i++) {

          var properties, model = source[i];

          Eif (name) {
            properties = { index: i };
            properties[name] = model;
          } else {
            properties = model;
          }

          if (i < this._children.length) {
            var c = this._children[i];

            // model is different? rebind. Otherwise ignore
            if (c.context === model || c.context[name] !== model) {
              c.bind(properties);
            }
          } else {

            // cannot be this - must be default scope
            var child = this.childTemplate.view(properties, {
              parent: this.view
            });
            this._children.push(child);
            this.section.appendChild(child.render());
          }
        }

        // TODO - easeOutSync?
        this._children.splice(i).forEach(function(child) {
          child.dispose();
        });
      }
    });