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1 | |
2 | |
3 Polymer.Base.extend(Polymer.Bind, { | |
4 | |
5 _shouldAddListener: function(effect) { | |
6 return effect.name && | |
7 effect.mode === '{' && | |
8 !effect.negate && | |
9 effect.kind != 'attribute' | |
10 ; | |
11 }, | |
12 | |
13 annotationEffect: function(source, value, effect) { | |
14 if (source != effect.value) { | |
15 value = this.getPathValue(effect.value); | |
16 this._data[effect.value] = value; | |
17 } | |
18 var calc = effect.negate ? !value : value; | |
19 return this._applyEffectValue(calc, effect); | |
20 }, | |
21 | |
22 reflectEffect: function(source) { | |
23 this.reflectPropertyToAttribute(source); | |
24 }, | |
25 | |
26 notifyEffect: function(source) { | |
27 this._notifyChange(source); | |
28 }, | |
29 | |
30 // Raw effect for extension; effect.function is an actual function | |
31 functionEffect: function(source, value, effect, old) { | |
32 effect.function.call(this, source, value, effect, old); | |
33 }, | |
34 | |
35 observerEffect: function(source, value, effect, old) { | |
36 this[effect.method](value, old); | |
37 }, | |
38 | |
39 complexObserverEffect: function(source, value, effect) { | |
40 var args = Polymer.Bind._marshalArgs(this._data, effect, source, value); | |
41 if (args) { | |
42 this[effect.method].apply(this, args); | |
43 } | |
44 }, | |
45 | |
46 computeEffect: function(source, value, effect) { | |
47 var args = Polymer.Bind._marshalArgs(this._data, effect, source, value); | |
48 if (args) { | |
49 this[effect.property] = this[effect.method].apply(this, args); | |
50 } | |
51 }, | |
52 | |
53 annotatedComputationEffect: function(source, value, effect) { | |
54 var args = Polymer.Bind._marshalArgs(this._data, effect, source, value); | |
55 if (args) { | |
56 var computedHost = this._rootDataHost || this; | |
57 var computedvalue = | |
58 computedHost[effect.method].apply(computedHost, args); | |
59 this._applyEffectValue(computedvalue, effect); | |
60 } | |
61 }, | |
62 | |
63 // path & value are used to fill in wildcard descriptor when effect is | |
64 // being called as a result of a path notification | |
65 _marshalArgs: function(model, effect, path, value) { | |
66 var values = []; | |
67 var args = effect.args; | |
68 for (var i=0, l=args.length; i<l; i++) { | |
69 var arg = args[i]; | |
70 var name = arg.name; | |
71 var v = arg.structured ? | |
72 Polymer.Base.getPathValue(name, model) : model[name]; | |
73 if (v === undefined) { | |
74 return; | |
75 } | |
76 if (arg.wildcard) { | |
77 // Only send the actual path changed info if the change that | |
78 // caused the observer to run matched the wildcard | |
79 var baseChanged = (name.indexOf(path + '.') === 0); | |
80 var matches = (effect.arg.name.indexOf(name) === 0 && !baseChanged); | |
81 values[i] = { | |
82 path: matches ? path : name, | |
83 value: matches ? value : v, | |
84 base: v | |
85 }; | |
86 } else { | |
87 values[i] = v; | |
88 } | |
89 } | |
90 return values; | |
91 } | |
92 | |
93 }); | |
94 | |
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