Merge "Allow plugins to display errors in the Gerrit ErrorDialog"

Documentation/js-api.txt

@@ -755,6 +755,10 @@ Gerrit.url('/123');  // "https://gerrit-review.googlesource.com/123"
 
 For a plugin specific version see link:#self_url()[`self.url()`].
 
+[[Gerrit_showError]]
+=== Gerrit.showError(message)
+Displays the given message in the Gerrit ErrorDialog.
+
 GERRIT
 ------
 Part of link:index.html[Gerrit Code Review]

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

@@ -37,6 +37,7 @@ public class ActionContext extends JavaScriptObject {
     Gerrit.ActionContext.prototype = {
       go: Gerrit.go,
       refresh: Gerrit.refresh,
+      showError: Gerrit.showError,
 
       br: function(){return doc.createElement('br')},
       hr: function(){return doc.createElement('hr')},

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

@@ -14,6 +14,7 @@
 
 package com.google.gerrit.client.api;
 
+import com.google.gerrit.client.ErrorDialog;
 import com.google.gerrit.client.Gerrit;
 import com.google.gwt.core.client.JavaScriptObject;
 import com.google.gwt.core.client.JsArray;
@@ -56,6 +57,7 @@ public class ApiGlue {
 
       go: @com.google.gerrit.client.api.ApiGlue::go(Ljava/lang/String;),
       refresh: @com.google.gerrit.client.api.ApiGlue::refresh(),
+      showError: @com.google.gerrit.client.api.ApiGlue::showError(Ljava/lang/String;),
 
       on: function (e,f){(this.events[e] || (this.events[e]=[])).push(f)},
       onAction: function (t,n,c){this._onAction(this.getPluginName(),t,n,c)},
@@ -143,6 +145,10 @@ public class ApiGlue {
     Gerrit.display(History.getToken());
   }
 
+  private static final void showError(String message) {
+    new ErrorDialog(message).center();
+  }
+
   static final native void invoke(JavaScriptObject f) /*-{ f(); }-*/;
   static final native void invoke(JavaScriptObject f, JavaScriptObject a) /*-{ f(a); }-*/;
   static final native void invoke(JavaScriptObject f, JavaScriptObject a, JavaScriptObject b) /*-{ f(a,b) }-*/;

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

@@ -52,6 +52,7 @@ final class Plugin extends JavaScriptObject {
       getPluginName: function(){return this.name},
       go: @com.google.gerrit.client.api.ApiGlue::go(Ljava/lang/String;),
       refresh: @com.google.gerrit.client.api.ApiGlue::refresh(),
+      showError: @com.google.gerrit.client.api.ApiGlue::showError(Ljava/lang/String;),
       on: function(e,f){G.on(e,f)},
       onAction: function(t,n,c){G._onAction(this.name,t,n,c)},
       screen: function(p,c){G._screen(this.name,p,c)},

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

@@ -50,6 +50,10 @@ public final class Plugin extends JavaScriptObject {
   public final native void refresh()
   /*-{ return this.refresh() }-*/;
 
+  /** Show message in Gerrit's ErrorDialog. */
+  public final native void showError(String message)
+  /*-{ return this.showError(message) }-*/;
+
   /**
    * Register a screen displayed at {@code /#/x/plugin/token}.
    *