diff options
Diffstat (limited to 'node_modules/montage/core')
24 files changed, 4920 insertions, 1593 deletions
diff --git a/node_modules/montage/core/change-notification.js b/node_modules/montage/core/change-notification.js new file mode 100644 index 00000000..bfe5ff2d --- /dev/null +++ b/node_modules/montage/core/change-notification.js | |||
@@ -0,0 +1,1418 @@ | |||
1 | /* <copyright> | ||
2 | This file contains proprietary software owned by Motorola Mobility, Inc.<br/> | ||
3 | No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/> | ||
4 | (c) Copyright 2011 Motorola Mobility, Inc. All Rights Reserved. | ||
5 | </copyright> */ | ||
6 | |||
7 | /** | ||
8 | @module montage/core/event/change-notification | ||
9 | */ | ||
10 | |||
11 | var Montage = require("montage").Montage, | ||
12 | logger = require("core/logger").logger("change-notification"), | ||
13 | UNDERSCORE = "_"; | ||
14 | |||
15 | // key: <path>, <target uuid>, <listener uuid> | ||
16 | var _descriptorsDirectory = Object.create(null); | ||
17 | |||
18 | // key: <target uuid>, <path> | ||
19 | var _willChangeDescriptorsDirectory = Object.create(null); | ||
20 | var _willChangeDescriptorsIndexesDirectory = Object.create(null); | ||
21 | var _changeDescriptorsDirectory = Object.create(null); | ||
22 | var _changeDescriptorsIndexesDirectory = Object.create(null); | ||
23 | |||
24 | exports.__reset__ = function() { | ||
25 | _descriptorsDirectory = Object.create(null); | ||
26 | _willChangeDescriptorsDirectory = Object.create(null); | ||
27 | _willChangeDescriptorsIndexesDirectory = Object.create(null); | ||
28 | _changeDescriptorsDirectory = Object.create(null); | ||
29 | _changeDescriptorsIndexesDirectory = Object.create(null); | ||
30 | // also need to remove all installed setters | ||
31 | }; | ||
32 | |||
33 | exports.__debug__ = function() { | ||
34 | console.log("_descriptorsDirectory", _descriptorsDirectory); | ||
35 | console.log("_willChangeDescriptorsDirectory", _willChangeDescriptorsDirectory, _willChangeDescriptorsIndexesDirectory); | ||
36 | console.log("_changeDescriptorsDirectory", _changeDescriptorsDirectory, _changeDescriptorsIndexesDirectory); | ||
37 | }; | ||
38 | |||
39 | var ChangeNotification = exports.ChangeNotification = Object.create(Montage, { | ||
40 | // (object) => <object>.uuid | ||
41 | // | ||
42 | // (target_n): { | ||
43 | // <propertyPath_n>: { | ||
44 | // target, | ||
45 | // propertyPath, | ||
46 | // willChangeListeners: { | ||
47 | // (listener_n): { | ||
48 | // listenerTarget, | ||
49 | // listenerFunction, | ||
50 | // listensToMutation | ||
51 | // } | ||
52 | // }, | ||
53 | // changeListeners: same as willChangeListeners, | ||
54 | // willChangeListenersCount: Object.keys(willChangeListeners).length, | ||
55 | // changeListenersCount: Object.keys(changeListeners).length, | ||
56 | // handleWillChange: function() | ||
57 | // handleChange: function() | ||
58 | // } | ||
59 | // } | ||
60 | _descriptorsRegistry: { | ||
61 | writable: true, | ||
62 | value: Object.create(null) | ||
63 | }, | ||
64 | |||
65 | _createFunctionDescriptor: { | ||
66 | value: function(target, listener, beforeChange, mutation) { | ||
67 | var identifier, | ||
68 | functionName, | ||
69 | functionDescriptor = Object.create(ChangeNotificationFunctionDescriptor); | ||
70 | |||
71 | if (typeof listener === "function") { | ||
72 | functionDescriptor.listenerFunction = listener; | ||
73 | functionDescriptor.listenerTarget = target; | ||
74 | } else { | ||
75 | identifier = target.identifier; | ||
76 | |||
77 | if (identifier) { | ||
78 | identifier = identifier.toCapitalized(); | ||
79 | |||
80 | functionName = "handle" + identifier + (beforeChange ? "WillChange" : "Change"); | ||
81 | if (typeof listener[functionName] === "function") { | ||
82 | functionDescriptor.listenerFunctionName = functionName; | ||
83 | functionDescriptor.listenerFunction = listener[functionName]; | ||
84 | functionDescriptor.listenerTarget = listener; | ||
85 | } | ||
86 | } | ||
87 | |||
88 | if (!functionDescriptor.listenerFunction) { | ||
89 | functionName = "handle" + (beforeChange ? "WillChange" : "Change"); | ||
90 | if (typeof listener[functionName] === "function") { | ||
91 | functionDescriptor.listenerFunctionName = functionName; | ||
92 | functionDescriptor.listenerFunction = listener[functionName]; | ||
93 | functionDescriptor.listenerTarget = listener; | ||
94 | } | ||
95 | } | ||
96 | } | ||
97 | |||
98 | if (!functionDescriptor.listenerFunction) { | ||
99 | console.log("Could not find valid listener when installing", target, listener); | ||
100 | throw "Could not find valid listener when installing"; | ||
101 | } | ||
102 | |||
103 | functionDescriptor.listensToMutation = mutation; | ||
104 | return functionDescriptor; | ||
105 | } | ||
106 | }, | ||
107 | |||
108 | registerPropertyChangeListener: { | ||
109 | value: function(target, path, listener, beforeChange, mutation) { | ||
110 | var targetKey = target.uuid, | ||
111 | registry = this._descriptorsRegistry, | ||
112 | targetEntry = registry[targetKey], | ||
113 | descriptor; | ||
114 | |||
115 | if (path == null) { | ||
116 | path = "*"; | ||
117 | mutation = true; | ||
118 | } | ||
119 | |||
120 | if (!targetEntry) { | ||
121 | targetEntry = registry[targetKey] = Object.create(null); | ||
122 | targetEntry.propertyPathCount = 0; | ||
123 | } | ||
124 | |||
125 | descriptor = targetEntry[path]; | ||
126 | if (!descriptor) { | ||
127 | descriptor = targetEntry[path] = Object.create(ChangeNotificationDescriptor).initWithTargetPath(target, path); | ||
128 | targetEntry.propertyPathCount++; | ||
129 | } | ||
130 | descriptor.registerListener(listener, beforeChange, mutation); | ||
131 | |||
132 | return descriptor; | ||
133 | } | ||
134 | }, | ||
135 | |||
136 | unregisterPropertyChangeListener: { | ||
137 | value: function(target, path, listener, beforeChange) { | ||
138 | var targetKey = target.uuid, | ||
139 | registry = this._descriptorsRegistry, | ||
140 | targetEntry = registry[targetKey], | ||
141 | descriptor; | ||
142 | |||
143 | if (path == null) { | ||
144 | path = "*"; | ||
145 | } | ||
146 | |||
147 | if (targetEntry) { | ||
148 | descriptor = targetEntry[path]; | ||
149 | if (descriptor) { | ||
150 | // TODO: should this function return the number of listeners? | ||
151 | descriptor.unregisterListener(listener, beforeChange); | ||
152 | if (descriptor.willChangeListenersCount === 0 && | ||
153 | descriptor.changeListenersCount === 0) { | ||
154 | delete targetEntry[path]; | ||
155 | if (--targetEntry.propertyPathCount === 0) { | ||
156 | delete registry[targetKey]; | ||
157 | } | ||
158 | } | ||
159 | } | ||
160 | } | ||
161 | } | ||
162 | }, | ||
163 | |||
164 | getPropertyChangeDescriptor: { | ||
165 | value: function(target, path) { | ||
166 | var targetEntry = this._descriptorsRegistry[target.uuid]; | ||
167 | |||
168 | if (targetEntry) { | ||
169 | if (path == null) { | ||
170 | path = "*"; | ||
171 | } | ||
172 | return targetEntry[path]; | ||
173 | } | ||
174 | } | ||
175 | }, | ||
176 | |||
177 | __debug__: { | ||
178 | value: function() { | ||
179 | console.log("_descriptorsRegistry: ", this._descriptorsRegistry); | ||
180 | } | ||
181 | }, | ||
182 | |||
183 | __reset__: { | ||
184 | value: function() { | ||