Move Add-on SDK source to toolkit/jetpack

1 files changed, 0 insertions, 235 deletions

diff --git a/addon-sdk/source/lib/sdk/simple-storage.js b/addon-sdk/source/lib/sdk/simple-storage.js
deleted file mode 100644
index bcf9b1cb9..000000000
--- a/addon-sdk/source/lib/sdk/simple-storage.js
+++ /dev/null
@@ -1,235 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-"use strict";
-
-module.metadata = {
-  "stability": "stable"
-};
-
-const { Cc, Ci } = require("chrome");
-const file = require("./io/file");
-const prefs = require("./preferences/service");
-const jpSelf = require("./self");
-const timer = require("./timers");
-const unload = require("./system/unload");
-const { emit, on, off } = require("./event/core");
-
-const WRITE_PERIOD_PREF = "extensions.addon-sdk.simple-storage.writePeriod";
-const WRITE_PERIOD_DEFAULT = 300000; // 5 minutes
-
-const QUOTA_PREF = "extensions.addon-sdk.simple-storage.quota";
-const QUOTA_DEFAULT = 5242880; // 5 MiB
-
-const JETPACK_DIR_BASENAME = "jetpack";
-
-Object.defineProperties(exports, {
-  storage: {
-    enumerable: true,
-    get: function() { return manager.root; },
-    set: function(value) { manager.root = value; }
-  },
-  quotaUsage: {
-    get: function() { return manager.quotaUsage; }
-  }
-});
-
-// A generic JSON store backed by a file on disk.  This should be isolated
-// enough to move to its own module if need be...
-function JsonStore(options) {
-  this.filename = options.filename;
-  this.quota = options.quota;
-  this.writePeriod = options.writePeriod;
-  this.onOverQuota = options.onOverQuota;
-  this.onWrite = options.onWrite;
-
-  unload.ensure(this);
-
-  this.writeTimer = timer.setInterval(this.write.bind(this),
-                                      this.writePeriod);
-}
-
-JsonStore.prototype = {
-  // The store's root.
-  get root() {
-    return this.isRootInited ? this._root : {};
-  },
-
-  // Performs some type checking.
-  set root(val) {
-    let types = ["array", "boolean", "null", "number", "object", "string"];
-    if (types.indexOf(typeof(val)) < 0) {
-      throw new Error("storage must be one of the following types: " +
-                      types.join(", "));
-    }
-    this._root = val;
-    return val;
-  },
-
-  // True if the root has ever been set (either via the root setter or by the
-  // backing file's having been read).
-  get isRootInited() {
-    return this._root !== undefined;
-  },
-
-  // Percentage of quota used, as a number [0, Inf).  > 1 implies over quota.
-  // Undefined if there is no quota.
-  get quotaUsage() {
-    return this.quota > 0 ?
-           JSON.stringify(this.root).length / this.quota :
-           undefined;
-  },
-
-  // Removes the backing file and all empty subdirectories.
-  purge: function JsonStore_purge() {
-    try {
-      // This'll throw if the file doesn't exist.
-      file.remove(this.filename);
-      let parentPath = this.filename;
-      do {
-        parentPath = file.dirname(parentPath);
-        // This'll throw if the dir isn't empty.
-        file.rmdir(parentPath);
-      } while (file.basename(parentPath) !== JETPACK_DIR_BASENAME);
-    }
-    catch (err) {}
-  },
-
-  // Initializes the root by reading the backing file.
-  read: function JsonStore_read() {
-    try {
-      let str = file.read(this.filename);
-
-      // Ideally we'd log the parse error with console.error(), but logged
-      // errors cause tests to fail.  Supporting "known" errors in the test
-      // harness appears to be non-trivial.  Maybe later.
-      this.root = JSON.parse(str);
-    }
-    catch (err) {
-      this.root = {};
-    }
-  },
-
-  // If the store is under quota, writes the root to the backing file.
-  // Otherwise quota observers are notified and nothing is written.
-  write: function JsonStore_write() {
-    if (this.quotaUsage > 1)
-      this.onOverQuota(this);
-    else
-      this._write();
-  },
-
-  // Cleans up on unload.  If unloading because of uninstall, the store is
-  // purged; otherwise it's written.
-  unload: function JsonStore_unload(reason) {
-    timer.clearInterval(this.writeTimer);
-    this.writeTimer = null;
-
-    if (reason === "uninstall")
-      this.purge();
-    else
-      this._write();
-  },
-
-  // True if the root is an empty object.
-  get _isEmpty() {
-    if (this.root && typeof(this.root) === "object") {
-      let empty = true;
-      for (let key in this.root) {
-        empty = false;
-        break;
-      }
-      return empty;
-    }
-    return false;
-  },
-
-  // Writes the root to the backing file, notifying write observers when
-  // complete.  If the store is over quota or if it's empty and the store has
-  // never been written, nothing is written and write observers aren't notified.
-  _write: function JsonStore__write() {
-    // Don't write if the root is uninitialized or if the store is empty and the
-    // backing file doesn't yet exist.
-    if (!this.isRootInited || (this._isEmpty && !file.exists(this.filename)))
-      return;
-
-    // If the store is over quota, don't write.  The current under-quota state
-    // should persist.
-    if (this.quotaUsage > 1)
-      return;
-
-    // Finally, write.
-    let stream = file.open(this.filename, "w");
-    try {
-      stream.writeAsync(JSON.stringify(this.root), function writeAsync(err) {
-        if (err)
-          console.error("Error writing simple storage file: " + this.filename);
-        else if (this.onWrite)
-          this.onWrite(this);
-      }.bind(this));
-    }
-    catch (err) {
-      // writeAsync closes the stream after it's done, so only close on error.
-      stream.close();
-    }
-  }
-};
-
-
-// This manages a JsonStore singleton and tailors its use to simple storage.
-// The root of the JsonStore is lazy-loaded:  The backing file is only read the
-// first time the root's gotten.
-var manager = ({
-  jsonStore: null,
-
-  // The filename of the store, based on the profile dir and extension ID.
-  get filename() {
-    let storeFile = Cc["@mozilla.org/file/directory_service;1"].
-                    getService(Ci.nsIProperties).
-                    get("ProfD", Ci.nsIFile);
-    storeFile.append(JETPACK_DIR_BASENAME);
-    storeFile.append(jpSelf.id);
-    storeFile.append("simple-storage");
-    file.mkpath(storeFile.path);
-    storeFile.append("store.json");
-    return storeFile.path;
-  },
-
-  get quotaUsage() {
-    return this.jsonStore.quotaUsage;
-  },
-
-  get root() {
-    if (!this.jsonStore.isRootInited)
-      this.jsonStore.read();
-    return this.jsonStore.root;
-  },
-
-  set root(val) {
-    return this.jsonStore.root = val;
-  },
-
-  unload: function manager_unload() {
-    off(this);
-  },
-
-  new: function manager_constructor() {
-    let manager = Object.create(this);
-    unload.ensure(manager);
-
-    manager.jsonStore = new JsonStore({
-      filename: manager.filename,
-      writePeriod: prefs.get(WRITE_PERIOD_PREF, WRITE_PERIOD_DEFAULT),
-      quota: prefs.get(QUOTA_PREF, QUOTA_DEFAULT),
-      onOverQuota: emit.bind(null, exports, "OverQuota")
-    });
-
-    return manager;
-  }
-}).new();
-
-exports.on = on.bind(null, exports);
-exports.removeListener = function(type, listener) {
-  off(exports, type, listener);
-};