The Tor Browser / file comparison
comparison: browser/components/sessionstore/src/GlobalState.jsm
browser/components/sessionstore/src/GlobalState.jsm
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:86d716a04803 |
|---|---|
| 1 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 2 * License, v. 2.0. If a copy of the MPL was not distributed with this file, | |
| 3 * You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 4 | |
| 5 "use strict"; | |
| 6 | |
| 7 this.EXPORTED_SYMBOLS = ["GlobalState"]; | |
| 8 | |
| 9 const EXPORTED_METHODS = ["getState", "clear", "get", "set", "delete", "setFromState"]; | |
| 10 /** | |
| 11 * Module that contains global session data. | |
| 12 */ | |
| 13 function GlobalState() { | |
| 14 let internal = new GlobalStateInternal(); | |
| 15 let external = {}; | |
| 16 for (let method of EXPORTED_METHODS) { | |
| 17 external[method] = internal[method].bind(internal); | |
| 18 } | |
| 19 return Object.freeze(external); | |
| 20 } | |
| 21 | |
| 22 function GlobalStateInternal() { | |
| 23 // Storage for global state. | |
| 24 this.state = {}; | |
| 25 } | |
| 26 | |
| 27 GlobalStateInternal.prototype = { | |
| 28 /** | |
| 29 * Get all value from the global state. | |
| 30 */ | |
| 31 getState: function() { | |
| 32 return this.state; | |
| 33 }, | |
| 34 | |
| 35 /** | |
| 36 * Clear all currently stored global state. | |
| 37 */ | |
| 38 clear: function() { | |
| 39 this.state = {}; | |
| 40 }, | |
| 41 | |
| 42 /** | |
| 43 * Retrieve a value from the global state. | |
| 44 * | |
| 45 * @param aKey | |
| 46 * A key the value is stored under. | |
| 47 * @return The value stored at aKey, or an empty string if no value is set. | |
| 48 */ | |
| 49 get: function(aKey) { | |
| 50 return this.state[aKey] || ""; | |
| 51 }, | |
| 52 | |
| 53 /** | |
| 54 * Set a global value. | |
| 55 * | |
| 56 * @param aKey | |
| 57 * A key to store the value under. | |
| 58 */ | |
| 59 set: function(aKey, aStringValue) { | |
| 60 this.state[aKey] = aStringValue; | |
| 61 }, | |
| 62 | |
| 63 /** | |
| 64 * Delete a global value. | |
| 65 * | |
| 66 * @param aKey | |
| 67 * A key to delete the value for. | |
| 68 */ | |
| 69 delete: function(aKey) { | |
| 70 delete this.state[aKey]; | |
| 71 }, | |
| 72 | |
| 73 /** | |
| 74 * Set the current global state from a state object. Any previous global | |
| 75 * state will be removed, even if the new state does not contain a matching | |
| 76 * key. | |
| 77 * | |
| 78 * @param aState | |
| 79 * A state object to extract global state from to be set. | |
| 80 */ | |
| 81 setFromState: function (aState) { | |
| 82 this.state = (aState && aState.global) || {}; | |
| 83 } | |
| 84 }; |
