Import Polymer 0.8 and several key elements.

third_party/polymer/v0_8/components-chromium/polymer/src/standard/effects-extracted.js

Index: third_party/polymer/v0_8/components-chromium/polymer/src/standard/effects-extracted.js
diff --git a/third_party/polymer/v0_8/components-chromium/polymer/src/standard/effects-extracted.js b/third_party/polymer/v0_8/components-chromium/polymer/src/standard/effects-extracted.js
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@@ -0,0 +1,197 @@
+
+
+  /**
+   * Support for property side effects.
+   *
+   * Key for effect objects:
+   *
+   * property | ann | anCmp | cmp | obs | cplxOb | description
+   * ---------|-----|-------|-----|-----|--------|----------------------------------------
+   * method   |     | X     | X   | X   | X      | function name to call on instance
+   * args     |     | X     | X   |     | X      | list of all arg descriptors for fn
+   * arg      |     | X     | X   |     | X      | arg descriptor for effect
+   * property |     |       | X   | X   |        | property for effect to set or get
+   * name     | X   |       |     |     |        | annotation value (text inside {{...}})
+   * kind     | X   | X     |     |     |        | binding type (property or attribute)
+   * index    | X   | X     |     |     |        | node index to set
+   *
+   */
+
+  Polymer.Base._addFeature({
+
+    _addPropertyEffect: function(property, kind, effect) {
+     // TODO(sjmiles): everything to the right of the first '.' is lost, implies
+     // there is some duplicate information flow (not the only sign)
+     var model = property.split('.').shift();
+     Polymer.Bind.addPropertyEffect(this, model, kind, effect);
+    },
+
+    // prototyping
+
+    _prepEffects: function() {
+      Polymer.Bind.prepareModel(this);
+      this._addAnnotationEffects(this._notes);
+    },
+
+    _prepBindings: function() {
+      Polymer.Bind.createBindings(this);
+    },
+
+    _addPropertyEffects: function(effects) {
+      if (effects) {
+        for (var n in effects) {
+          var effect = effects[n];
+          if (effect.observer) {
+            this._addObserverEffect(n, effect.observer);
+          }
+          if (effect.computed) {
+            this._addComputedEffect(n, effect.computed);
+          }
+          if (effect.notify) {
+            this._addPropertyEffect(n, 'notify');
+          }
+          if (effect.reflectToAttribute) {
+            this._addPropertyEffect(n, 'reflect');
+          }
+          if (this.isReadOnlyProperty(n)) {
+            // Ensure accessor is created
+            Polymer.Bind.ensurePropertyEffects(this, n);
+          }
+        }
+      }
+    },
+
+    _parseMethod: function(expression) {
+      var m = expression.match(/(\w*)\((.*)\)/);
+      if (m) {
+        return {
+          method: m[1],
+          args: m[2].split(/[^\w.*]+/).map(this._parseArg)
+        };
+      }
+    },
+
+    _parseArg: function(arg) {
+      var a = { name: arg };
+      a.structured = arg.indexOf('.') > 0;
+      if (a.structured) {
+        a.wildcard = (arg.slice(-2) == '.*');
+        if (a.wildcard) {
+          a.name = arg.slice(0, -2);
+        }
+      }
+      return a;
+    },
+
+    _addComputedEffect: function(name, expression) {
+      var sig = this._parseMethod(expression);
+      sig.args.forEach(function(arg) {
+        this._addPropertyEffect(arg.name, 'compute', {
+          method: sig.method,
+          args: sig.args,
+          arg: arg,
+          property: name
+        });
+      }, this);
+    },
+
+    _addObserverEffect: function(property, observer) {
+      this._addPropertyEffect(property, 'observer', {
+        method: observer,
+        property: property
+      });
+    },
+
+    _addComplexObserverEffects: function(observers) {
+      if (observers) {
+        observers.forEach(function(observer) {
+          this._addComplexObserverEffect(observer);
+        }, this);
+      }
+    },
+
+    _addComplexObserverEffect: function(observer) {
+      var sig = this._parseMethod(observer);
+      sig.args.forEach(function(arg) {
+        this._addPropertyEffect(arg.name, 'complexObserver', {
+          method: sig.method,
+          args: sig.args,
+          arg: arg
+        });
+      }, this);
+    },
+
+    _addAnnotationEffects: function(notes) {
+      // create a virtual annotation list, must be concretized at instance time
+      this._nodes = [];
+      // process annotations that have been parsed from template
+      notes.forEach(function(note) {
+        // where to find the node in the concretized list
+        var index = this._nodes.push(note) - 1;
+        note.bindings.forEach(function(binding) {
+          this._addAnnotationEffect(binding, index);
+        }, this);
+      }, this);
+    },
+
+    _addAnnotationEffect: function(note, index) {
+      // TODO(sjmiles): annotations have 'effects' proper and 'listener'
+      if (Polymer.Bind._shouldAddListener(note)) {
+        // <node>.on.<dash-case-property>-changed: <path> = e.detail.value
+        Polymer.Bind._addAnnotatedListener(this, index,
+          note.name, note.value, note.event);
+      }
+      var sig = this._parseMethod(note.value);
+      if (sig) {
+        this._addAnnotatedComputationEffect(sig, note, index);
+      } else {
+        // capture the node index
+        note.index = index;
+        // discover top-level property (model) from path
+        var model = note.value.split('.').shift();
+        // add 'annotation' binding effect for property 'model'
+        this._addPropertyEffect(model, 'annotation', note);
+      }
+    },
+
+    _addAnnotatedComputationEffect: function(sig, note, index) {
+      sig.args.forEach(function(arg) {
+        this._addPropertyEffect(arg.name, 'annotatedComputation', {
+          kind: note.kind,
+          method: sig.method,
+          args: sig.args,
+          arg: arg,
+          property: note.name,
+          index: index
+        });
+      }, this);
+    },
+
+    // instancing
+
+    _marshalInstanceEffects: function() {
+      Polymer.Bind.prepareInstance(this);
+      Polymer.Bind.setupBindListeners(this);
+    },
+
+    _applyEffectValue: function(value, info) {
+      var node = this._nodes[info.index];
+      // TODO(sorvell): ideally, the info object is normalized for easy
+      // lookup here.
+      var property = info.property || info.name || 'textContent';
+      // special processing for 'class' and 'className'; 'class' handled
+      // when attr is serialized.
+      if (info.kind == 'attribute') {
+        this.serializeValueToAttribute(value, property, node);
+      } else {
+        // TODO(sorvell): consider pre-processing this step so we don't need
+        // this lookup.
+        if (property === 'className') {
+          value = this._scopeElementClass(node, value);
+        }
+        return node[property] = value;
+      }
+    }
+
+  });
+