# Code coverage report for lib/script/index.js

## Statements: 10% (7 / 70) Branches: 0% (0 / 18) Functions: 0% (0 / 22) Lines: 11.29% (7 / 62) Ignored: none

All files » lib/script/ » index.js

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    // TODO: refactor me

    /**
     */

    function boundScript(script) {

      var run  = script.run;
      var refs = script.refs;

      return {
        refs: refs,
        evaluate: function(view) {
          return run.call(view);
        },
        watch: function(view, listener) {

          var currentValue;
          var locked = false;

          function now() {
            if (locked) return this;
            locked = true;
            var oldValue = currentValue;
            listener(currentValue = run.call(view), oldValue);
            locked = false;
            return this;
          }

          var dispose;

          if (!refs.length) return {
            dispose: function() {},
            trigger: now
          };

          if (refs.length === 1) {
            dispose = view.watch(refs[0], now).dispose;
          } else {

            var bindings = [];

            for (var i = refs.length; i--;) {
              bindings.push(view.watch(refs[i], now));
            }

            dispose = function() {
              for (var i = bindings.length; i--;) bindings[i].dispose();
            };
          }

          return {
            dispose: dispose,
            trigger: function() {
              now();
              return this;
            }
          };
        }
      };
    }

    /**
     * scripts combined with strings. defined within attributes usually
     */

    function bufferedScript(values, view) {

      var scripts = values.filter(function(value) {
        return typeof value !== "string";
      }).map(function(script) {
        return script;
      });

      function evaluate(view) {
        return values.map(function(script) {

          if (typeof script === "string") {
            return script;
          }

          return script.run.call(view);

        }).join("");
      }

      return {
        buffered: true,
        evaluate: function(view) {
          return evaluate(view);
        },
        watch: function(view, listener) {

          var bindings = [];

          function now() {
            listener(evaluate(view));
            return this;
          }

          for (var i = scripts.length; i--;) {

            var script = scripts[i];
            if (!script.refs) continue;

            for (var j = script.refs.length; j--;) {
              var ref = script.refs[j];

              bindings.push(view.watch(ref, now));
            }
          }

          return {
            trigger: now,
            dispose: function() {
              for (var i = bindings.length; i--;) bindings[i].dispose();
            }
          };
        }
      };
    }

    /**
     */

    function staticScript(value, view) {
      return {
        watch: function(view, listener) {
          return {
            trigger: function() {
              listener(value);
              return this;
            },
            dispose: function() {

            }
          };
        }
      };
    }

    /**
     */

    module.exports = function(value) {

      if (typeof value !== "object") return staticScript(value);
      if (value.length) {
        if (value.length === 1) return boundScript(value[0].value);
        return bufferedScript(value.map(function(v) {
          if (typeof v === "object") return v.value;
          return v;
        }));
      } else {
        return boundScript(value);
      }
    };