1 files changed, 195 insertions, 0 deletions

diff --git a/node_modules/montage/core/gate.js b/node_modules/montage/core/gate.js
new file mode 100755
index 00000000..0910cc46
--- /dev/null
+++ b/node_modules/montage/core/gate.js
@@ -0,0 +1,195 @@
+/* <copyright>
+ This file contains proprietary software owned by Motorola Mobility, Inc.<br/>
+ No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/>
+ (c) Copyright 2011 Motorola Mobility, Inc.  All Rights Reserved.
+ </copyright> */
+/**
+        @module montage/core/gate
+    @requires montage/core/core
+    @requires montage/core/logger
+*/
+var Montage = require("montage").Montage,
+    logger = require("core/logger").logger("gate");
+/**
+ @class module:montage/core/gate.Gate
+ @extends module:montage/core/core.Montage
+ */
+var Gate = exports.Gate = Montage.create(Montage,/** @lends module:montage/core/gate.Gate# */ {
+/**
+    @function
+    @returns {Gate} A new Gate instance.
+    */
+    init: {
+        enumerable: false,
+        value: function() {
+            this.reset();
+            return this;
+        }
+    },
+/**
+    @function
+    @param {String} delegate The delegate to be initialized.
+    @returns itself
+    */
+    initWithDelegate: {
+        enumerable: false,
+        value: function(delegate) {
+            this.reset();
+            this.delegate = delegate;
+            return this;
+        }
+    },
+/**
+    @function
+    @param {String} propertyDescriptor The propertyDescriptor to be initialized.
+    @returns itself
+    */
+    initWithDescriptor: {
+        enumerable: false,
+        value: function(propertyDescriptor) {
+            var fieldName;
+            this.reset();
+            for (fieldName in propertyDescriptor) {
+                this.setField(fieldName, propertyDescriptor[fieldName].value);
+            }
+            return this;
+        }
+    },
+/**
+
+        @type {Property}
+        @default {Number} 0
+    */
+    count: {
+        value: 0
+    },
+/**
+
+        @type {Property}
+        @default {String} null
+    */
+    table: {
+        value: null
+    },
+/**
+    @function
+    @param {Array} aFieldName The aFieldName array.
+    @returns !table or table[aFieldName]
+    */
+    getField: {
+        enumerable: false,
+        value: function(aFieldName) {
+            var table = this.table;
+            return !table || table[aFieldName];
+        }
+    },
+/**
+    @function
+    @param {Array} aFieldName The aFieldName array.
+    @param {Number} value The count on the array.
+    */
+    setField: {
+        enumerable: false,
+        value: function(aFieldName, value) {
+            var table = this.table,
+                fieldValue,
+                oldCount = this.count;
+
+            table = (!table ? this.table = {} : table);
+
+            fieldValue = table[aFieldName];
+
+            if (typeof fieldValue === "undefined" && !value) {
+                // new field
+                this.count++;
+            } else if (typeof fieldValue !== "undefined" && fieldValue !== value) {
+                if (value) {
+                    this.count--;
+                } else {
+                    this.count++;
+                }
+            } else if (value) {
+                logger.error(this, aFieldName + " was not set before.");
+            }
+            table[aFieldName] = !!value;
+            if (this.count === 0 && oldCount > 0) {
+                this.callDelegateMethod(true);
+            } else if (oldCount === 0 && this.count > 0) {
+                this.callDelegateMethod(false);
+            }
+        }
+    },
+/**
+    @function
+    @param {Array} aFieldName The aFieldName array to be removed.
+    */
+    removeField: {
+        enumerable: false,
+        value: function(aFieldName) {
+            var table = this.table, fieldValue = table[aFieldName];
+            if (typeof fieldValue !== "undefined" && !fieldValue) {
+                // if the value was false decrement the count
+                this.count--;
+            }
+            delete table[aFieldName];
+        }
+    },
+/**
+
+        @type {Property}
+        @default {String} null
+    */
+    delegate: {
+        enumerable: false,
+        value: null
+    },
+/**
+    @function
+    @param {Number} value The value to be called.
+    */
+    callDelegateMethod: {
+        value: function(value) {
+            var delegateMethod;
+            if (this.delegate && typeof (delegateMethod = this.delegate["gateDidBecome" + (value ? "True" : "False")]) === "function") {
+                delegateMethod.call(this.delegate, this);
+            }
+        },
+        enumerable: false
+    },
+/**
+    @type {Function}
+    @returns this.count === 0
+    */
+    value: {
+        enumerable: false,
+        get: function() {
+            return this.count === 0;
+        }
+    },
+/**
+    @function
+    */
+    reset: {
+        enumerable: false,
+        value: function() {
+            this.table = {};
+            this.count = 0;
+        }
+    },
+/**
+    @function
+    @returns {String} result
+    */
+    toString: {
+        value: function() {
+            var fieldNames = this._fields,
+                i,
+                iField,
+                result = "";
+            for (i = 0; (iField = fieldNames[i]); i++) {
+                result += iField + "[" + (this._value & fieldNames[iField]) + "], ";
+            }
+            return result;
+        }
+    }
+});