JS API: Expose logged in user

Plugins may want to access currently logged in user.  For example in
onSubmit() action implementation the user can be warned when she is
about to submit someone's else change:

  Gerrit.install(function(self) {
    function onSubmitChange(c, r) {
      if (self.getCurrentUser()._account_id != c.owner._account_id) {
        return confirm("Really submit change:\n"
            + c.id + "\n"
            + "revision: " + r.name + "\n"
            + "from: " + c.owner.name
            + "?");
      }
      return true;
    }
    Gerrit.on('submitchange', onSubmitChange);
  });

Bug: issue 461
Change-Id: Icec244fa8e07e428e287ff3d90fec3b1f810cf10

Documentation/js-api.txt

@@ -60,6 +60,11 @@ self.get(url, callback)
   a string, otherwise the result is a JavaScript object or array,
   as described in the relevant REST API documentation.
 
+[[self_getCurrentUser]]
+=== self.getCurrentUser()
+Returns the currently signed in user's AccountInfo data; empty account
+data if no user is currently signed in.
+
 [[self_getPluginName]]
 === self.getPluginName()
 Returns the name this plugin was installed as by the server
@@ -625,6 +630,11 @@ Gerrit.get('/changes/?q=status:open', function (open) {
 });
 ----
 
+[[Gerrit_getCurrentUser]]
+=== Gerrit.getCurrentUser()
+Returns the currently signed in user's AccountInfo data; empty account
+data if no user is currently signed in.
+
 [[Gerrit_getPluginName]]
 === Gerrit.getPluginName()
 Returns the name this plugin was installed as by the server

gerrit-gwtui/src/main/java/com/google/gerrit/client/api/ApiGlue.java

@@ -16,6 +16,7 @@ package com.google.gerrit.client.api;
 
 import com.google.gerrit.client.ErrorDialog;
 import com.google.gerrit.client.Gerrit;
+import com.google.gerrit.client.account.AccountInfo;
 import com.google.gwt.core.client.JavaScriptObject;
 import com.google.gwt.core.client.JsArray;
 import com.google.gwt.user.client.History;
@@ -66,6 +67,7 @@ public class ApiGlue {
       refresh: @com.google.gerrit.client.api.ApiGlue::refresh(),
       refreshMenuBar: @com.google.gerrit.client.api.ApiGlue::refreshMenuBar(),
       showError: @com.google.gerrit.client.api.ApiGlue::showError(Ljava/lang/String;),
+      getCurrentUser: @com.google.gerrit.client.api.ApiGlue::getCurrentUser(),
 
       on: function (e,f){(this.events[e] || (this.events[e]=[])).push(f)},
       onAction: function (t,n,c){this._onAction(this.getPluginName(),t,n,c)},
@@ -194,6 +196,10 @@ public class ApiGlue {
     Gerrit.display(History.getToken());
   }
 
+  private static final AccountInfo getCurrentUser() {
+    return Gerrit.getUserAccountInfo();
+  }
+
   private static final void refreshMenuBar() {
     Gerrit.refreshMenuBar();
   }

gerrit-gwtui/src/main/java/com/google/gerrit/client/api/Plugin.java

@@ -50,6 +50,7 @@ final class Plugin extends JavaScriptObject {
     var G = $wnd.Gerrit;
     @com.google.gerrit.client.api.Plugin::TYPE.prototype = {
       getPluginName: function(){return this.name},
+      getCurrentUser: @com.google.gerrit.client.api.ApiGlue::getCurrentUser(),
       go: @com.google.gerrit.client.api.ApiGlue::go(Ljava/lang/String;),
       refresh: @com.google.gerrit.client.api.ApiGlue::refresh(),
       refreshMenuBar: @com.google.gerrit.client.api.ApiGlue::refreshMenuBar(),