Add m-esr52 at 52.6.0

13 files changed, 959 insertions, 0 deletions

diff --git a/toolkit/components/xulstore/XULStore.js b/toolkit/components/xulstore/XULStore.js
new file mode 100644
index 0000000000..c2721327c2
--- /dev/null
+++ b/toolkit/components/xulstore/XULStore.js
@@ -0,0 +1,336 @@
+/* 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/. */
+
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+const Cr = Components.results;
+const Cu = Components.utils;
+
+// Enables logging and shorter save intervals.
+const debugMode = false;
+
+// Delay when a change is made to when the file is saved.
+// 30 seconds normally, or 3 seconds for testing
+const WRITE_DELAY_MS = (debugMode ? 3 : 30) * 1000;
+
+const XULSTORE_CONTRACTID = "@mozilla.org/xul/xulstore;1";
+const XULSTORE_CID = Components.ID("{6f46b6f4-c8b1-4bd4-a4fa-9ebbed0753ea}");
+const STOREDB_FILENAME = "xulstore.json";
+
+Cu.import("resource://gre/modules/Services.jsm");
+Cu.import("resource://gre/modules/Task.jsm");
+Cu.import('resource://gre/modules/XPCOMUtils.jsm');
+
+XPCOMUtils.defineLazyModuleGetter(this, "NetUtil", "resource://gre/modules/NetUtil.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "OS", "resource://gre/modules/osfile.jsm");
+
+function XULStore() {
+  if (!Services.appinfo.inSafeMode)
+    this.load();
+}
+
+XULStore.prototype = {
+  classID: XULSTORE_CID,
+  classInfo: XPCOMUtils.generateCI({classID: XULSTORE_CID,
+                                    contractID: XULSTORE_CONTRACTID,
+                                    classDescription: "XULStore",
+                                    interfaces: [Ci.nsIXULStore]}),
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver, Ci.nsIXULStore,
+                                         Ci.nsISupportsWeakReference]),
+  _xpcom_factory: XPCOMUtils.generateSingletonFactory(XULStore),
+
+  /* ---------- private members ---------- */
+
+  /*
+   * The format of _data is _data[docuri][elementid][attribute]. For example:
+   *  {
+   *      "chrome://blah/foo.xul" : {
+   *                                    "main-window" : { aaa : 1, bbb : "c" },
+   *                                    "barColumn"   : { ddd : 9, eee : "f" },
+   *                                },
+   *
+   *      "chrome://foopy/b.xul" :  { ... },
+   *      ...
+   *  }
+   */
+  _data: {},
+  _storeFile: null,
+  _needsSaving: false,
+  _saveAllowed: true,
+  _writeTimer: Cc["@mozilla.org/timer;1"].createInstance(Ci.nsITimer),
+
+  load: function () {
+    Services.obs.addObserver(this, "profile-before-change", true);
+
+    this._storeFile = Services.dirsvc.get("ProfD", Ci.nsIFile);
+    this._storeFile.append(STOREDB_FILENAME);
+
+    if (!this._storeFile.exists()) {
+      this.import();
+    } else {
+      this.readFile();
+    }
+  },
+
+  observe: function(subject, topic, data) {
+    this.writeFile();
+    if (topic == "profile-before-change") {
+      this._saveAllowed = false;
+    }
+  },
+
+  /*
+   * Internal function for logging debug messages to the Error Console window
+   */
+  log: function (message) {
+    if (!debugMode)
+      return;
+    dump("XULStore: " + message + "\n");
+    Services.console.logStringMessage("XULStore: " + message);
+  },
+
+  import: function() {
+    let localStoreFile = Services.dirsvc.get("ProfD", Ci.nsIFile);
+
+    localStoreFile.append("localstore.rdf");
+    if (!localStoreFile.exists()) {
+      return;
+    }
+
+    const RDF = Cc["@mozilla.org/rdf/rdf-service;1"].getService(Ci.nsIRDFService);
+    const persistKey = RDF.GetResource("http://home.netscape.com/NC-rdf#persist");
+
+    this.log("Import localstore from " + localStoreFile.path);
+
+    let localStoreURI = Services.io.newFileURI(localStoreFile).spec;
+    let localStore = RDF.GetDataSourceBlocking(localStoreURI);
+    let resources = localStore.GetAllResources();
+
+    while (resources.hasMoreElements()) {
+      let resource = resources.getNext().QueryInterface(Ci.nsIRDFResource);
+      let uri;
+
+      try {
+        uri = NetUtil.newURI(resource.ValueUTF8);
+      } catch (ex) {
+        continue; // skip invalid uris
+      }
+
+      // If this has a ref, then this is an attribute reference. Otherwise,
+      // this is a document reference.
+      if (!uri.hasRef)
+          continue;
+
+      // Verify that there the persist key is connected up.
+      let docURI = uri.specIgnoringRef;
+
+      if (!localStore.HasAssertion(RDF.GetResource(docURI), persistKey, resource, true))
+          continue;
+
+      let id = uri.ref;
+      let attrs = localStore.ArcLabelsOut(resource);
+
+      while (attrs.hasMoreElements()) {
+        let attr = attrs.getNext().QueryInterface(Ci.nsIRDFResource);
+        let value = localStore.GetTarget(resource, attr, true);
+
+        if (value instanceof Ci.nsIRDFLiteral) {
+          this.setValue(docURI, id, attr.ValueUTF8, value.Value);
+        }
+      }
+    }
+  },
+
+  readFile: function() {
+    const MODE_RDONLY = 0x01;
+    const FILE_PERMS  = 0o600;
+
+    let stream = Cc["@mozilla.org/network/file-input-stream;1"].
+                 createInstance(Ci.nsIFileInputStream);
+    let json = Cc["@mozilla.org/dom/json;1"].createInstance(Ci.nsIJSON);
+    try {
+      stream.init(this._storeFile, MODE_RDONLY, FILE_PERMS, 0);
+      this._data = json.decodeFromStream(stream, stream.available());
+    } catch (e) {
+      this.log("Error reading JSON: " + e);
+      // Ignore problem, we'll just continue on with an empty dataset.
+    } finally {
+      stream.close();
+    }
+  },
+
+  writeFile: Task.async(function* () {
+    if (!this._needsSaving)
+      return;
+
+    this._needsSaving = false;
+
+    this.log("Writing to xulstore.json");
+
+    try {
+      let data = JSON.stringify(this._data);
+      let encoder = new TextEncoder();
+
+      data = encoder.encode(data);
+      yield OS.File.writeAtomic(this._storeFile.path, data,
+                              { tmpPath: this._storeFile.path + ".tmp" });
+    } catch (e) {
+      this.log("Failed to write xulstore.json: " + e);
+      throw e;
+    }
+  }),
+
+  markAsChanged: function() {
+    if (this._needsSaving || !this._storeFile)
+      return;
+
+    // Don't write the file more than once every 30 seconds.
+    this._needsSaving = true;
+    this._writeTimer.init(this, WRITE_DELAY_MS, Ci.nsITimer.TYPE_ONE_SHOT);
+  },
+
+  /* ---------- interface implementation ---------- */
+
+  setValue: function (docURI, id, attr, value) {
+    this.log("Saving " + attr + "=" + value + " for id=" + id + ", doc=" + docURI);
+
+    if (!this._saveAllowed) {
+      Services.console.logStringMessage("XULStore: Changes after profile-before-change are ignored!");
+      return;
+    }
+
+    // bug 319846 -- don't save really long attributes or values.
+    if (id.length > 512 || attr.length > 512) {
+      throw Components.Exception("id or attribute name too long", Cr.NS_ERROR_ILLEGAL_VALUE);
+    }
+
+    if (value.length > 4096) {
+      Services.console.logStringMessage("XULStore: Warning, truncating long attribute value")
+      value = value.substr(0, 4096);
+    }
+
+    let obj = this._data;
+    if (!(docURI in obj)) {
+      obj[docURI] = {};
+    }
+    obj = obj[docURI];
+    if (!(id in obj)) {
+      obj[id] = {};
+    }
+    obj = obj[id];
+
+    // Don't set the value if it is already set to avoid saving the file.
+    if (attr in obj && obj[attr] == value)
+      return;
+
+    obj[attr] = value; // IE, this._data[docURI][id][attr] = value;
+
+    this.markAsChanged();
+  },
+
+  hasValue: function (docURI, id, attr) {
+    this.log("has store value for id=" + id + ", attr=" + attr + ", doc=" + docURI);
+
+    let ids = this._data[docURI];
+    if (ids) {
+      let attrs = ids[id];
+      if (attrs) {
+        return attr in attrs;
+      }
+    }
+
+    return false;
+  },
+
+  getValue: function (docURI, id, attr) {
+    this.log("get store value for id=" + id + ", attr=" + attr + ", doc=" + docURI);
+
+    let ids = this._data[docURI];
+    if (ids) {
+      let attrs = ids[id];
+      if (attrs) {
+        return attrs[attr] || "";
+      }
+    }
+
+    return "";
+  },
+
+  removeValue: function (docURI, id, attr) {
+    this.log("remove store value for id=" + id + ", attr=" + attr + ", doc=" + docURI);
+
+    if (!this._saveAllowed) {
+      Services.console.logStringMessage("XULStore: Changes after profile-before-change are ignored!");
+      return;
+    }
+
+    let ids = this._data[docURI];
+    if (ids) {
+      let attrs = ids[id];
+      if (attrs && attr in attrs) {
+        delete attrs[attr];
+
+        if (Object.getOwnPropertyNames(attrs).length == 0) {
+          delete ids[id];
+
+          if (Object.getOwnPropertyNames(ids).length == 0) {
+            delete this._data[docURI];
+          }
+        }
+
+        this.markAsChanged();
+      }
+    }
+  },
+
+  getIDsEnumerator: function (docURI) {
+    this.log("Getting ID enumerator for doc=" + docURI);
+
+    if (!(docURI in this._data))
+      return new nsStringEnumerator([]);
+
+    let result = [];
+    let ids = this._data[docURI];
+    if (ids) {
+      for (let id in this._data[docURI]) {
+        result.push(id);
+      }
+    }
+
+    return new nsStringEnumerator(result);
+  },
+
+  getAttributeEnumerator: function (docURI, id) {
+    this.log("Getting attribute enumerator for id=" + id + ", doc=" + docURI);
+
+    if (!(docURI in this._data) || !(id in this._data[docURI]))
+      return new nsStringEnumerator([]);
+
+    let attrs = [];
+    for (let attr in this._data[docURI][id]) {
+      attrs.push(attr);
+    }
+
+    return new nsStringEnumerator(attrs);
+  }
+};
+
+function nsStringEnumerator(items) {
+  this._items = items;
+}
+
+nsStringEnumerator.prototype = {
+  QueryInterface : XPCOMUtils.generateQI([Ci.nsIStringEnumerator]),
+  _nextIndex : 0,
+  hasMore: function() {
+    return this._nextIndex < this._items.length;
+  },
+  getNext : function() {
+    if (!this.hasMore())
+      throw Cr.NS_ERROR_NOT_AVAILABLE;
+    return this._items[this._nextIndex++];
+  },
+};
+
+this.NSGetFactory = XPCOMUtils.generateNSGetFactory([XULStore]);
diff --git a/toolkit/components/xulstore/XULStore.manifest b/toolkit/components/xulstore/XULStore.manifest
new file mode 100644
index 0000000000..249f0c447d
--- /dev/null
+++ b/toolkit/components/xulstore/XULStore.manifest
@@ -0,0 +1,2 @@
+component {6f46b6f4-c8b1-4bd4-a4fa-9ebbed0753ea} XULStore.js
+contract @mozilla.org/xul/xulstore;1 {6f46b6f4-c8b1-4bd4-a4fa-9ebbed0753ea}
diff --git a/toolkit/components/xulstore/moz.build b/toolkit/components/xulstore/moz.build
new file mode 100644
index 0000000000..30559fccb6
--- /dev/null
+++ b/toolkit/components/xulstore/moz.build
@@ -0,0 +1,19 @@
+# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
+# vim: set filetype=python:
+# 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/.
+
+MOCHITEST_CHROME_MANIFESTS += ['tests/chrome/chrome.ini']
+XPCSHELL_TESTS_MANIFESTS += ['tests/xpcshell/xpcshell.ini']
+
+XPIDL_SOURCES += [
+    'nsIXULStore.idl',
+]
+
+XPIDL_MODULE = 'toolkit_xulstore'
+
+EXTRA_COMPONENTS += [
+    'XULStore.js',
+    'XULStore.manifest',
+]
diff --git a/toolkit/components/xulstore/nsIXULStore.idl b/toolkit/components/xulstore/nsIXULStore.idl
new file mode 100644
index 0000000000..57050b31b2
--- /dev/null
+++ b/toolkit/components/xulstore/nsIXULStore.idl
@@ -0,0 +1,75 @@
+/* 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/. */
+
+#include "nsISupports.idl"
+
+interface nsIStringEnumerator;
+
+/**
+ * The XUL store is used to store information related to a XUL document/application.
+ * Typically it is used to store the persisted state for the document, such as
+ * window location, toolbars that are open and nodes that are open and closed in a tree.
+ *
+ * The data is serialized to [profile directory]/xulstore.json
+ */
+[scriptable, uuid(987c4b35-c426-4dd7-ad49-3c9fa4c65d20)]
+
+interface nsIXULStore: nsISupports
+{
+  /**
+   * Sets a value in the store.
+   *
+   * @param doc - document URI
+   * @param id - identifier of the node
+   * @param attr - attribute to store
+   * @param value - value of the attribute
+   */
+  void setValue(in AString doc, in AString id, in AString attr, in AString value);
+
+  /**
+   * Returns true if the store contains a value for attr.
+   *
+   * @param doc - URI of the document
+   * @param id - identifier of the node
+   * @param attr - attribute
+   */
+  bool hasValue(in AString doc, in AString id, in AString attr);
+
+  /**
+   * Retrieves a value in the store, or an empty string if it does not exist.
+   *
+   * @param doc - document URI
+   * @param id - identifier of the node
+   * @param attr - attribute to retrieve
+   *
+   * @returns the value of the attribute
+   */
+  AString getValue(in AString doc, in AString id, in AString attr);
+
+  /**
+   * Removes a value in the store.
+   *
+   * @param doc - document URI
+   * @param id - identifier of the node
+   * @param attr - attribute to remove
+   */
+  void removeValue(in AString doc, in AString id, in AString attr);
+
+  /**
+   * Iterates over all of the ids associated with a given document uri that
+   * have stored data.
+   *
+   * @param doc - document URI
+   */
+  nsIStringEnumerator getIDsEnumerator(in AString doc);
+
+  /**
+   * Iterates over all of the attributes associated with a given document uri
+   * and id that have stored data.
+   *
+   * @param doc - document URI
+   * @param id - identifier of the node
+   */
+  nsIStringEnumerator getAttributeEnumerator(in AString doc, in AString id);
+};
diff --git a/toolkit/components/xulstore/tests/chrome/.eslintrc.js b/toolkit/components/xulstore/tests/chrome/.eslintrc.js
new file mode 100644
index 0000000000..8c0f4f574c
--- /dev/null
+++ b/toolkit/components/xulstore/tests/chrome/.eslintrc.js
@@ -0,0 +1,7 @@
+"use strict";
+
+module.exports = {
+  "extends": [
+    "../../../../../testing/mochitest/chrome.eslintrc.js"
+  ]
+};
diff --git a/toolkit/components/xulstore/tests/chrome/animals.rdf b/toolkit/components/xulstore/tests/chrome/animals.rdf
new file mode 100644
index 0000000000..c7319e641c
--- /dev/null
+++ b/toolkit/components/xulstore/tests/chrome/animals.rdf
@@ -0,0 +1,142 @@
+<?xml version="1.0"?>
+
+<RDF:RDF xmlns:RDF="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
+         xmlns:NC="http://home.netscape.com/NC-rdf#"
+         xmlns:ANIMALS="http://www.some-fictitious-zoo.com/rdf#">
+
+   <ANIMALS:Class RDF:about="http://www.some-fictitious-zoo.com/arachnids">
+     <ANIMALS:name>Arachnids</ANIMALS:name>
+   </ANIMALS:Class>
+
+       <RDF:Description RDF:about="http://www.some-fictitious-zoo.com/arachnids/tarantula">
+         <ANIMALS:name>Tarantula</ANIMALS:name>
+       </RDF:Description>
+
+   <ANIMALS:Class RDF:about="http://www.some-fictitious-zoo.com/birds">
+     <ANIMALS:name>Birds</ANIMALS:name>
+   </ANIMALS:Class>
+
+       <RDF:Description RDF:about="http://www.some-fictitious-zoo.com/birds/emu">
+         <ANIMALS:name>Emu</ANIMALS:name>
+       </RDF:Description>
+
+       <RDF:Description RDF:about="http://www.some-fictitious-zoo.com/birds/barnowl">
+         <ANIMALS:name>Barn Owl</ANIMALS:name>
+       </RDF:Description>
+
+       <RDF:Description RDF:about="http://www.some-fictitious-zoo.com/birds/raven">
+         <ANIMALS:name>Raven</ANIMALS:name>
+       </RDF:Description>
+
+   <ANIMALS:Class RDF:about="http://www.some-fictitious-zoo.com/crustaceans">
+     <ANIMALS:name>Crustaceans</ANIMALS:name>
+   </ANIMALS:Class>
+
+   <ANIMALS:Class RDF:about="http://www.some-fictitious-zoo.com/fish">
+     <ANIMALS:name>Fish</ANIMALS:name>
+   </ANIMALS:Class>
+
+       <RDF:Description RDF:about="http://www.some-fictitious-zoo.com/fish/cod">
+         <ANIMALS:name>Cod</ANIMALS:name>
+       </RDF:Description>
+
+       <RDF:Description RDF:about="http://www.some-fictitious-zoo.com/fish/swordfish">
+         <ANIMALS:name>Swordfish</ANIMALS:name>
+       </RDF:Description>
+
+   <ANIMALS:Class RDF:about="http://www.some-fictitious-zoo.com/mammals">
+     <ANIMALS:name>Mammals</ANIMALS:name>
+   </ANIMALS:Class>
+
+       <RDF:Description RDF:about="http://www.some-fictitious-zoo.com/mammals/lion">
+         <ANIMALS:name>Lion</ANIMALS:name>
+       </RDF:Description>
+
+       <RDF:Description RDF:about="http://www.some-fictitious-zoo.com/mammals/hippopotamus">
+         <ANIMALS:name>HIPPOPOTAMUS</ANIMALS:name>
+       </RDF:Description>
+
+       <RDF:Description RDF:about="http://www.some-fictitious-zoo.com/mammals/africanelephant">
+         <ANIMALS:name>African Elephant</ANIMALS:name>
+       </RDF:Description>
+
+       <RDF:Description RDF:about="http://www.some-fictitious-zoo.com/mammals/llama">
+         <ANIMALS:name>LLAMA</ANIMALS:name>
+       </RDF:Description>
+
+       <RDF:Description RDF:about="http://www.some-fictitious-zoo.com/mammals/polarbear">
+         <ANIMALS:name>Polar Bear</ANIMALS:name>
+       </RDF:Description>
+
+       <RDF:Description RDF:about="http://www.some-fictitious-zoo.com/mammals/aardvark">
+         <ANIMALS:name>aardvark</ANIMALS:name>
+       </RDF:Description>
+
+       <RDF:Description RDF:about="http://www.some-fictitious-zoo.com/mammals/ninebandedarmadillo">
+         <ANIMALS:name>Nine-banded Armadillo</ANIMALS:name>
+       </RDF:Description>
+
+       <RDF:Description RDF:about="http://www.some-fictitious-zoo.com/mammals/gorilla">
+         <ANIMALS:name>Gorilla</ANIMALS:name>
+       </RDF:Description>
+
+   <ANIMALS:Class RDF:about="http://www.some-fictitious-zoo.com/reptiles">
+     <ANIMALS:name>Reptiles</ANIMALS:name>
+   </ANIMALS:Class>
+
+       <RDF:Description RDF:about="http://www.some-fictitious-zoo.com/reptiles/anaconda">
+         <ANIMALS:name>Anaconda</ANIMALS:name>
+       </RDF:Description>
+
+       <RDF:Description RDF:about="http://www.some-fictitious-zoo.com/reptiles/chameleon">
+         <ANIMALS:name>Chameleon</ANIMALS:name>
+       </RDF:Description>
+
+  <RDF:Seq RDF:about="http://www.some-fictitious-zoo.com/some-animals" ANIMALS:name="Zoo Animals">
+    <RDF:li RDF:resource="http://www.some-fictitious-zoo.com/arachnids"/>
+    <RDF:li RDF:resource="http://www.some-fictitious-zoo.com/birds"/>
+  </RDF:Seq>
+
+  <RDF:Seq RDF:about="http://www.some-fictitious-zoo.com/all-animals" ANIMALS:name="Zoo Animals">
+    <RDF:li>
+      <RDF:Seq RDF:about="http://www.some-fictitious-zoo.com/arachnids">
+        <RDF:li RDF:resource="http://www.some-fictitious-zoo.com/arachnids/tarantula"/>
+      </RDF:Seq>
+    </RDF:li>
+    <RDF:li>
+      <RDF:Seq RDF:about="http://www.some-fictitious-zoo.com/birds">
+        <RDF:li RDF:resource="http://www.some-fictitious-zoo.com/birds/emu"/>
+        <RDF:li RDF:resource="http://www.some-fictitious-zoo.com/birds/barnowl"/>
+        <RDF:li RDF:resource="http://www.some-fictitious-zoo.com/birds/raven"/>
+      </RDF:Seq>
+    </RDF:li>
+    <RDF:li>
+      <RDF:Seq RDF:about="http://www.some-fictitious-zoo.com/crustaceans"/>
+    </RDF:li>
+    <RDF:li>
+      <RDF:Seq RDF:about="http://www.some-fictitious-zoo.com/fish">
+        <RDF:li RDF:resource="http://www.some-fictitious-zoo.com/fish/cod"/>
+        <RDF:li RDF:resource="http://www.some-fictitious-zoo.com/fish/swordfish"/>
+      </RDF:Seq>
+    </RDF:li>
+    <RDF:li>
+      <RDF:Seq RDF:about="http://www.some-fictitious-zoo.com/mammals">
+        <RDF:li RDF:resource="http://www.some-fictitious-zoo.com/mammals/lion"/>
+        <RDF:li RDF:resource="http://www.some-fictitious-zoo.com/mammals/hippopotamus"/>
+        <RDF:li RDF:resource="http://www.some-fictitious-zoo.com/mammals/africanelephant"/>
+        <RDF:li RDF:resource="http://www.some-fictitious-zoo.com/mammals/llama"/>
+        <RDF:li RDF:resource="http://www.some-fictitious-zoo.com/mammals/polarbear"/>
+        <RDF:li RDF:resource="http://www.some-fictitious-zoo.com/mammals/aardvark"/>
+        <RDF:li RDF:resource="http://www.some-fictitious-zoo.com/mammals/ninebandedarmadillo"/>
+        <RDF:li RDF:resource="http://www.some-fictitious-zoo.com/mammals/gorilla"/>
+      </RDF:Seq>
+    </RDF:li>
+    <RDF:li>
+      <RDF:Seq RDF:about="http://www.some-fictitious-zoo.com/reptiles">
+        <RDF:li RDF:resource="http://www.some-fictitious-zoo.com/reptiles/anaconda"/>
+        <RDF:li RDF:resource="http://www.some-fictitious-zoo.com/reptiles/chameleon"/>
+      </RDF:Seq>
+    </RDF:li>
+  </RDF:Seq>
+
+</RDF:RDF>
diff --git a/toolkit/components/xulstore/tests/chrome/chrome.ini b/toolkit/components/xulstore/tests/chrome/chrome.ini
new file mode 100644
index 0000000000..91efd5455a
--- /dev/null
+++ b/toolkit/components/xulstore/tests/chrome/chrome.ini
@@ -0,0 +1,6 @@
+[DEFAULT]
+support-files =
+  window_persistence.xul
+  animals.rdf
+
+[test_persistence.xul]
diff --git a/toolkit/components/xulstore/tests/chrome/test_persistence.xul b/toolkit/components/xulstore/tests/chrome/test_persistence.xul
new file mode 100644
index 0000000000..736a067edd
--- /dev/null
+++ b/toolkit/components/xulstore/tests/chrome/test_persistence.xul
@@ -0,0 +1,31 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css" type="text/css"?>
+
+<window title="Persistence Tests"
+        onload="runTest()"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul">
+
+  <script type="application/javascript"
+          src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"/>
+
+  <script>
+    SimpleTest.waitForExplicitFinish();
+    function runTest() {
+      window.openDialog("window_persistence.xul", "_blank", "chrome", true);
+    }
+
+    function windowOpened() {
+      window.openDialog("window_persistence.xul", "_blank", "chrome", false);
+    }
+
+    function testDone() {
+      SimpleTest.finish();
+    }
+  </script>
+
+<body xmlns="http://www.w3.org/1999/xhtml">
+  <p id="display"/>
+</body>
+
+</window>
diff --git a/toolkit/components/xulstore/tests/chrome/window_persistence.xul b/toolkit/components/xulstore/tests/chrome/window_persistence.xul
new file mode 100644
index 0000000000..4d76fe11d1
--- /dev/null
+++ b/toolkit/components/xulstore/tests/chrome/window_persistence.xul
@@ -0,0 +1,98 @@
+<?xml version="1.0"?>
+<?xml-stylesheet href="chrome://global/skin" type="text/css"?>
+<?xml-stylesheet href="chrome://mochikit/content/tests/SimpleTest/test.css" type="text/css"?>
+
+<window title="Persistence Tests"
+        onload="opened()"
+        xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
+        persist="screenX screenY width height">
+
+<button id="button1" label="Button1" persist="value"/>
+<button id="button2" label="Button2" value="Normal" persist="value"/>
+
+<tree id="tree" datasources="animals.rdf" ref="http://www.some-fictitious-zoo.com/all-animals" 
+       flags="dont-build-content" width="200" height="200">
+  <treecols orient="horizontal" id="treecols">
+    <treecol id="treecol" primary="true" label="Name" flex="1"/>
+  </treecols>
+  <template id="template">
+    <treechildren>
+      <treeitem uri="rdf:*">
+        <treerow>
+          <treecell label="rdf:http://www.some-fictitious-zoo.com/rdf#name"/>
+          <treecell/>
+        </treerow>
+      </treeitem>
+    </treechildren>
+  </template>
+</tree>
+
+<script>
+<![CDATA[
+
+var Cc = Components.classes;
+var Ci = Components.interfaces;
+
+let XULStore = Cc["@mozilla.org/xul/xulstore;1"].getService(Ci.nsIXULStore);
+let URI = "chrome://mochitests/content/chrome/toolkit/components/xulstore/tests/chrome/window_persistence.xul";
+
+function opened()
+{
+  // If the data in the tree has not been loaded yet, wait a bit and try again.
+  var treeView = document.getElementById("tree").view;
+  if (treeView.rowCount != 6 && treeView.rowCount != 17) {
+    setTimeout(opened, 50);
+    return;
+  }
+
+  runTest(treeView);
+}
+
+function runTest(treeView)
+{
+  var firstRun = window.arguments[0];
+  if (firstRun) {
+    document.getElementById("button1").setAttribute("value", "Pressed");
+    document.getElementById("button2").removeAttribute("value");
+
+    document.getElementById("button2").setAttribute("foo", "bar");
+    document.persist("button2", "foo");
+    is(XULStore.getValue(URI, "button2", "foo"), "bar", "attribute persisted")
+    document.getElementById("button2").removeAttribute("foo");
+    document.persist("button2", "foo");
+    is(XULStore.hasValue(URI, "button2", "foo"), false, "attribute removed")
+
+    is(treeView.rowCount, 6, "tree rows are closed");
+    treeView.toggleOpenState(1);
+    treeView.toggleOpenState(7);
+
+    window.close();
+    window.opener.windowOpened();
+  }
+  else {
+    is(document.getElementById("button1").getAttribute("value"), "Pressed",
+       "Attribute set");
+    is(document.getElementById("button2").hasAttribute("value"), true,
+       "Attribute cleared");
+    is(document.getElementById("button2").getAttribute("value"), "",
+       "Attribute cleared");
+    is(document.getElementById("button2").hasAttribute("foo"), false,
+       "Attribute cleared");
+    is(document.getElementById("button2").getAttribute("foo"), "",
+       "Attribute cleared");
+
+    is(treeView.rowCount, 17, "tree rows are open");
+    is(treeView.isContainerOpen(0), false, "first closed row");
+    is(treeView.isContainerOpen(1), true, "first open row");
+    is(treeView.isContainerOpen(7), true, "second open row");
+
+    window.close();
+    window.opener.testDone();
+  }
+}
+
+function is(l, r, n) { window.opener.wrappedJSObject.SimpleTest.is(l,r,n); }
+
+]]></script>
+
+</window>
diff --git a/toolkit/components/xulstore/tests/xpcshell/.eslintrc.js b/toolkit/components/xulstore/tests/xpcshell/.eslintrc.js
new file mode 100644
index 0000000000..d35787cd2c
--- /dev/null
+++ b/toolkit/components/xulstore/tests/xpcshell/.eslintrc.js
@@ -0,0 +1,7 @@
+"use strict";
+
+module.exports = {
+  "extends": [
+    "../../../../../testing/xpcshell/xpcshell.eslintrc.js"
+  ]
+};
diff --git a/toolkit/components/xulstore/tests/xpcshell/localstore.rdf b/toolkit/components/xulstore/tests/xpcshell/localstore.rdf
new file mode 100644
index 0000000000..458eb50eac
--- /dev/null
+++ b/toolkit/components/xulstore/tests/xpcshell/localstore.rdf
@@ -0,0 +1,31 @@
+<?xml version="1.0"?>
+<RDF:RDF xmlns:NC="http://home.netscape.com/NC-rdf#"
+         xmlns:RDF="http://www.w3.org/1999/02/22-rdf-syntax-ns#">
+  <RDF:Description RDF:about="chrome://browser/content/browser.xul#sidebar-title"
+                   value="" />
+  <RDF:Description RDF:about="about:config#prefCol"
+                   ordinal="1"
+                   sortDirection="ascending" />
+  <RDF:Description RDF:about="chrome://browser/content/browser.xul#addon-bar"
+                   collapsed="true" />
+  <RDF:Description RDF:about="about:config">
+    <NC:persist RDF:resource="about:config#prefCol"/>
+    <NC:persist RDF:resource="about:config#lockCol"/>
+    <NC:persist RDF:resource="about:config#typeCol"/>
+    <NC:persist RDF:resource="about:config#valueCol"/>
+  </RDF:Description>
+  <RDF:Description RDF:about="about:config#lockCol"
+                   ordinal="3" />
+  <RDF:Description RDF:about="chrome://browser/content/browser.xul">
+    <NC:persist RDF:resource="chrome://browser/content/browser.xul#main-window"/>
+    <NC:persist RDF:resource="chrome://browser/content/browser.xul#addon-bar"/>
+    <NC:persist RDF:resource="chrome://browser/content/browser.xul#sidebar-box"/>
+    <NC:persist RDF:resource="chrome://browser/content/browser.xul#sidebar-title"/>
+  </RDF:Description>
+  <RDF:Description RDF:about="chrome://browser/content/browser.xul#main-window"
+                   width="994"
+                   height="768"
+                   screenX="4"
+                   screenY="22"
+                   sizemode="normal" />
+</RDF:RDF>
diff --git a/toolkit/components/xulstore/tests/xpcshell/test_XULStore.js b/toolkit/components/xulstore/tests/xpcshell/test_XULStore.js
new file mode 100644
index 0000000000..c3c96654b0
--- /dev/null
+++ b/toolkit/components/xulstore/tests/xpcshell/test_XULStore.js
@@ -0,0 +1,199 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/◦
+*/
+
+"use strict"
+
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+const Cu = Components.utils;
+const Cr = Components.results;
+
+Cu.import("resource://gre/modules/osfile.jsm")
+
+var XULStore = null;
+var browserURI = "chrome://browser/content/browser.xul";
+var aboutURI = "about:config";
+
+function run_test() {
+  do_get_profile();
+  run_next_test();
+}
+
+function checkValue(uri, id, attr, reference) {
+  let value = XULStore.getValue(uri, id, attr);
+  do_check_true(value === reference);
+}
+
+function checkValueExists(uri, id, attr, exists) {
+  do_check_eq(XULStore.hasValue(uri, id, attr), exists);
+}
+
+function getIDs(uri) {
+  let it = XULStore.getIDsEnumerator(uri);
+  let result = [];
+
+  while (it.hasMore()) {
+    let value = it.getNext();
+    result.push(value);
+  }
+
+  result.sort();
+  return result;
+}
+
+function getAttributes(uri, id) {
+  let it = XULStore.getAttributeEnumerator(uri, id);
+
+  let result = [];
+
+  while (it.hasMore()) {
+    let value = it.getNext();
+    result.push(value);
+  }
+
+  result.sort();
+  return result;
+}
+
+function checkArrays(a, b) {
+  a.sort();
+  b.sort();
+  do_check_true(a.toString() == b.toString());
+}
+
+function checkOldStore() {
+  checkArrays(['addon-bar', 'main-window', 'sidebar-title'], getIDs(browserURI));
+  checkArrays(['collapsed'], getAttributes(browserURI, 'addon-bar'));
+  checkArrays(['height', 'screenX', 'screenY', 'sizemode', 'width'],
+              getAttributes(browserURI, 'main-window'));
+  checkArrays(['value'], getAttributes(browserURI, 'sidebar-title'));
+
+  checkValue(browserURI, "addon-bar", "collapsed", "true");
+  checkValue(browserURI, "main-window", "width", "994");
+  checkValue(browserURI, "main-window", "height", "768");
+  checkValue(browserURI, "main-window", "screenX", "4");
+  checkValue(browserURI, "main-window", "screenY", "22");
+  checkValue(browserURI, "main-window", "sizemode", "normal");
+  checkValue(browserURI, "sidebar-title", "value", "");
+
+  checkArrays(['lockCol', 'prefCol'], getIDs(aboutURI));
+  checkArrays(['ordinal'], getAttributes(aboutURI, 'lockCol'));
+  checkArrays(['ordinal', 'sortDirection'], getAttributes(aboutURI, 'prefCol'));
+
+  checkValue(aboutURI, "prefCol", "ordinal", "1");
+  checkValue(aboutURI, "prefCol", "sortDirection", "ascending");
+  checkValue(aboutURI, "lockCol", "ordinal", "3");
+}
+
+add_task(function* testImport() {
+  let src = "localstore.rdf";
+  let dst = OS.Path.join(OS.Constants.Path.profileDir, src);
+
+  yield OS.File.copy(src, dst);
+
+  // Importing relies on XULStore not yet being loaded before this point.
+  XULStore = Cc["@mozilla.org/xul/xulstore;1"].getService(Ci.nsIXULStore);
+  checkOldStore();
+});
+
+add_task(function* testTruncation() {
+  let dos = Array(8192).join("~");
+  // Long id names should trigger an exception
+  Assert.throws(() => XULStore.setValue(browserURI, dos, "foo", "foo"), /NS_ERROR_ILLEGAL_VALUE/);
+
+  // Long attr names should trigger an exception
+  Assert.throws(() => XULStore.setValue(browserURI, "foo", dos, "foo"), /NS_ERROR_ILLEGAL_VALUE/);
+
+  // Long values should be truncated
+  XULStore.setValue(browserURI, "dos", "dos", dos);
+  dos =XULStore.getValue(browserURI, "dos", "dos");
+  do_check_true(dos.length == 4096)
+  XULStore.removeValue(browserURI, "dos", "dos")
+});
+
+add_task(function* testGetValue() {
+  // Get non-existing property
+  checkValue(browserURI, "side-window", "height", "");
+
+  // Get existing property
+  checkValue(browserURI, "main-window", "width", "994");
+});
+
+add_task(function* testHasValue() {
+  // Check non-existing property
+  checkValueExists(browserURI, "side-window", "height", false);
+
+  // Check existing property
+  checkValueExists(browserURI, "main-window", "width", true);
+});
+
+add_task(function* testSetValue() {
+  // Set new attribute
+  checkValue(browserURI, "side-bar", "width", "");
+  XULStore.setValue(browserURI, "side-bar", "width", "1000");
+  checkValue(browserURI, "side-bar", "width", "1000");
+  checkArrays(["addon-bar", "main-window", "side-bar", "sidebar-title"], getIDs(browserURI));
+  checkArrays(["width"], getAttributes(browserURI, 'side-bar'));
+
+  // Modify existing property
+  checkValue(browserURI, "side-bar", "width", "1000");
+  XULStore.setValue(browserURI, "side-bar", "width", "1024");
+  checkValue(browserURI, "side-bar", "width", "1024");
+  checkArrays(["addon-bar", "main-window", "side-bar", "sidebar-title"], getIDs(browserURI));
+  checkArrays(["width"], getAttributes(browserURI, 'side-bar'));
+
+  // Add another attribute
+  checkValue(browserURI, "side-bar", "height", "");
+  XULStore.setValue(browserURI, "side-bar", "height", "1000");
+  checkValue(browserURI, "side-bar", "height", "1000");
+  checkArrays(["addon-bar", "main-window", "side-bar", "sidebar-title"], getIDs(browserURI));
+  checkArrays(["width", "height"], getAttributes(browserURI, 'side-bar'));
+});
+
+add_task(function* testRemoveValue() {
+  // Remove first attribute
+  checkValue(browserURI, "side-bar", "width", "1024");
+  XULStore.removeValue(browserURI, "side-bar", "width");
+  checkValue(browserURI, "side-bar", "width", "");
+  checkValueExists(browserURI, "side-bar", "width", false);
+  checkArrays(["addon-bar", "main-window", "side-bar", "sidebar-title"], getIDs(browserURI));
+  checkArrays(["height"], getAttributes(browserURI, 'side-bar'));
+
+  // Remove second attribute
+  checkValue(browserURI, "side-bar", "height", "1000");
+  XULStore.removeValue(browserURI, "side-bar", "height");
+  checkValue(browserURI, "side-bar", "height", "");
+  checkArrays(["addon-bar", "main-window", "sidebar-title"], getIDs(browserURI));
+
+  // Removing an attribute that doesn't exists shouldn't fail
+  XULStore.removeValue(browserURI, "main-window", "bar");
+
+  // Removing from an id that doesn't exists shouldn't fail
+  XULStore.removeValue(browserURI, "foo", "bar");
+
+  // Removing from a document that doesn't exists shouldn't fail
+  let nonDocURI = "chrome://example/content/other.xul";
+  XULStore.removeValue(nonDocURI, "foo", "bar");
+
+  // Remove all attributes in browserURI
+  XULStore.removeValue(browserURI, "addon-bar", "collapsed");
+  checkArrays([], getAttributes(browserURI, "addon-bar"));
+  XULStore.removeValue(browserURI, "main-window", "width");
+  XULStore.removeValue(browserURI, "main-window", "height");
+  XULStore.removeValue(browserURI, "main-window", "screenX");
+  XULStore.removeValue(browserURI, "main-window", "screenY");
+  XULStore.removeValue(browserURI, "main-window", "sizemode");
+  checkArrays([], getAttributes(browserURI, "main-window"));
+  XULStore.removeValue(browserURI, "sidebar-title", "value");
+  checkArrays([], getAttributes(browserURI, "sidebar-title"));
+  checkArrays([], getIDs(browserURI));
+
+  // Remove all attributes in aboutURI
+  XULStore.removeValue(aboutURI, "prefCol", "ordinal");
+  XULStore.removeValue(aboutURI, "prefCol", "sortDirection");
+  checkArrays([], getAttributes(aboutURI, "prefCol"));
+  XULStore.removeValue(aboutURI, "lockCol", "ordinal");
+  checkArrays([], getAttributes(aboutURI, "lockCol"));
+  checkArrays([], getIDs(aboutURI));
+});
diff --git a/toolkit/components/xulstore/tests/xpcshell/xpcshell.ini b/toolkit/components/xulstore/tests/xpcshell/xpcshell.ini
new file mode 100644
index 0000000000..d483dae027
--- /dev/null
+++ b/toolkit/components/xulstore/tests/xpcshell/xpcshell.ini
@@ -0,0 +1,6 @@
+[DEFAULT]
+skip-if = toolkit == 'android'
+support-files =
+  localstore.rdf
+
+[test_XULStore.js]