1 files changed, 173 insertions, 0 deletions
diff --git a/browser/extensions/formautofill/content/FormAutofillParent.jsm b/browser/extensions/formautofill/content/FormAutofillParent.jsm
new file mode 100644
index 000000000..bdfe0f478
--- /dev/null
+++ b/browser/extensions/formautofill/content/FormAutofillParent.jsm
@@ -0,0 +1,173 @@
+/* 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/. */
+
+/*
+ * Implements a service used to access storage and communicate with content.
+ *
+ * A "fields" array is used to communicate with FormAutofillContent. Each item
+ * represents a single input field in the content page as well as its
+ * @autocomplete properties. The schema is as below. Please refer to
+ * FormAutofillContent.jsm for more details.
+ *
+ * [
+ *   {
+ *     section,
+ *     addressType,
+ *     contactType,
+ *     fieldName,
+ *     value,
+ *     index
+ *   },
+ *   {
+ *     // ...
+ *   }
+ * ]
+ */
+
+/* exported FormAutofillParent */
+
+"use strict";
+
+const {classes: Cc, interfaces: Ci, utils: Cu, results: Cr} = Components;
+
+Cu.import("resource://gre/modules/XPCOMUtils.jsm");
+
+XPCOMUtils.defineLazyModuleGetter(this, "OS",
+                                  "resource://gre/modules/osfile.jsm");
+XPCOMUtils.defineLazyModuleGetter(this, "ProfileStorage",
+                                  "resource://formautofill/ProfileStorage.jsm");
+
+const PROFILE_JSON_FILE_NAME = "autofill-profiles.json";
+
+let FormAutofillParent = {
+  _profileStore: null,
+
+  /**
+   * Initializes ProfileStorage and registers the message handler.
+   */
+  init: function() {
+    let storePath =
+      OS.Path.join(OS.Constants.Path.profileDir, PROFILE_JSON_FILE_NAME);
+
+    this._profileStore = new ProfileStorage(storePath);
+    this._profileStore.initialize();
+
+    let mm = Cc["@mozilla.org/globalmessagemanager;1"]
+               .getService(Ci.nsIMessageListenerManager);
+    mm.addMessageListener("FormAutofill:PopulateFieldValues", this);
+  },
+
+  /**
+   * Handles the message coming from FormAutofillContent.
+   *
+   * @param   {string} message.name The name of the message.
+   * @param   {object} message.data The data of the message.
+   * @param   {nsIFrameMessageManager} message.target Caller's message manager.
+   */
+  receiveMessage: function({name, data, target}) {
+    switch (name) {
+      case "FormAutofill:PopulateFieldValues":
+        this._populateFieldValues(data, target);
+        break;
+    }
+  },
+
+  /**
+   * Returns the instance of ProfileStorage. To avoid syncing issues, anyone
+   * who needs to access the profile should request the instance by this instead
+   * of creating a new one.
+   *
+   * @returns {ProfileStorage}
+   */
+  getProfileStore: function() {
+    return this._profileStore;
+  },
+
+  /**
+   * Uninitializes FormAutofillParent. This is for testing only.
+   *
+   * @private
+   */
+  _uninit: function() {
+    if (this._profileStore) {
+      this._profileStore._saveImmediately();
+      this._profileStore = null;
+    }
+
+    let mm = Cc["@mozilla.org/globalmessagemanager;1"]
+               .getService(Ci.nsIMessageListenerManager);
+    mm.removeMessageListener("FormAutofill:PopulateFieldValues", this);
+  },
+
+  /**
+   * Populates the field values and notifies content to fill in. Exception will
+   * be thrown if there's no matching profile.
+   *
+   * @private
+   * @param  {string} data.guid
+   *         Indicates which profile to populate
+   * @param  {Fields} data.fields
+   *         The "fields" array collected from content.
+   * @param  {nsIFrameMessageManager} target
+   *         Content's message manager.
+   */
+  _populateFieldValues({guid, fields}, target) {
+    this._profileStore.notifyUsed(guid);
+    this._fillInFields(this._profileStore.get(guid), fields);
+    target.sendAsyncMessage("FormAutofill:fillForm", {fields});
+  },
+
+  /**
+   * Transforms a word with hyphen into camel case.
+   * (e.g. transforms "address-type" into "addressType".)
+   *
+   * @private
+   * @param   {string} str The original string with hyphen.
+   * @returns {string} The camel-cased output string.
+   */
+  _camelCase(str) {
+    return str.toLowerCase().replace(/-([a-z])/g, s => s[1].toUpperCase());
+  },
+
+  /**
+   * Get the corresponding value from the specified profile according to a valid
+   * @autocomplete field name.
+   *
+   * Note that the field name doesn't need to match the property name defined in
+   * Profile object. This method can transform the raw data to fulfill it. (e.g.
+   * inputting "country-name" as "fieldName" will get a full name transformed
+   * from the country code that is recorded in "country" field.)
+   *
+   * @private
+   * @param   {Profile} profile   The specified profile.
+   * @param   {string}  fieldName A valid @autocomplete field name.
+   * @returns {string}  The corresponding value. Returns "undefined" if there's
+   *                    no matching field.
+   */
+  _getDataByFieldName(profile, fieldName) {
+    let key = this._camelCase(fieldName);
+
+    // TODO: Transform the raw profile data to fulfill "fieldName" here.
+
+    return profile[key];
+  },
+
+  /**
+   * Fills in the "fields" array by the specified profile.
+   *
+   * @private
+   * @param   {Profile} profile The specified profile to fill in.
+   * @param   {Fields}  fields  The "fields" array collected from content.
+   */
+  _fillInFields(profile, fields) {
+    for (let field of fields) {
+      let value = this._getDataByFieldName(profile, field.fieldName);
+      if (value !== undefined) {
+        field.value = value;
+      }
+    }
+  },
+};
+
+this.EXPORTED_SYMBOLS = ["FormAutofillParent"];