Load plugins JS resources upon initial page rendering

Bug: Issue 3915
Change-Id: Ic2d1d96458ecb2cd09dcd1cd204f8a06f234dbb7

gerrit-pgm/src/main/java/com/google/gerrit/pgm/Daemon.java

@@ -467,7 +467,6 @@ public class Daemon extends SiteProgram {
     modules.add(H2CacheBasedWebSession.module());
     modules.add(sysInjector.getInstance(GitOverHttpModule.class));
     modules.add(sysInjector.getInstance(WebModule.class));
-    modules.add(sysInjector.getInstance(StaticModule.class));
     modules.add(sysInjector.getInstance(RequireSslFilter.Module.class));
     modules.add(new HttpPluginModule());
     if (sshd) {
@@ -485,6 +484,9 @@ public class Daemon extends SiteProgram {
     }
     modules.add(sysInjector.getInstance(GetUserFilter.Module.class));
 
+    // StaticModule contains a "/*" wildcard, place it last.
+    modules.add(sysInjector.getInstance(StaticModule.class));
+
     return sysInjector.createChildInjector(modules);
   }
 

gerrit-war/src/main/java/com/google/gerrit/httpd/WebAppInitializer.java

@@ -366,7 +366,6 @@ public class WebAppInitializer extends GuiceServletContextListener
     modules.add(RequestMetricsFilter.module());
     modules.add(sysInjector.getInstance(GitOverHttpModule.class));
     modules.add(sysInjector.getInstance(WebModule.class));
-    modules.add(sysInjector.getInstance(StaticModule.class));
     modules.add(sysInjector.getInstance(RequireSslFilter.Module.class));
     if (sshInjector != null) {
       modules.add(sshInjector.getInstance(WebSshGlueModule.class));
@@ -384,6 +383,9 @@ public class WebAppInitializer extends GuiceServletContextListener
     }
     modules.add(sysInjector.getInstance(GetUserFilter.Module.class));
 
+    // StaticModule contains a "/*" wildcard, place it last.
+    modules.add(sysInjector.getInstance(StaticModule.class));
+
     return sysInjector.createChildInjector(modules);
   }
 

polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.html

@@ -21,6 +21,7 @@ limitations under the License.
 <link rel="import" href="../../shared/gr-button/gr-button.html">
 <link rel="import" href="../../shared/gr-change-star/gr-change-star.html">
 <link rel="import" href="../../shared/gr-date-formatter/gr-date-formatter.html">
+<link rel="import" href="../../shared/gr-js-api-interface/gr-js-api-interface.html">
 <link rel="import" href="../../shared/gr-linked-text/gr-linked-text.html">
 <link rel="import" href="../../shared/gr-overlay/gr-overlay.html">
 <link rel="import" href="../../shared/gr-rest-api-interface/gr-rest-api-interface.html">
@@ -305,6 +306,7 @@ limitations under the License.
           on-cancel="_handleReplyCancel"
           hidden$="[[!_loggedIn]]">Reply</gr-reply-dialog>
     </gr-overlay>
+    <gr-js-api-interface id="jsAPI"></gr-js-api-interface>
     <gr-rest-api-interface id="restAPI"></gr-rest-api-interface>
   </template>
   <script src="gr-change-view.js"></script>

polygerrit-ui/app/elements/change/gr-change-view/gr-change-view.js

@@ -204,6 +204,11 @@
             this.set('viewState.showReplyDialog', false);
           }
         }.bind(this));
+
+        this.$.jsAPI.handleEvent(this.$.jsAPI.EventType.SHOW_CHANGE, {
+          change: this._change,
+          patchNum: this._patchNum,
+        });
       }.bind(this));
     },
 

polygerrit-ui/app/elements/gr-app.html

@@ -137,6 +137,9 @@ limitations under the License.
           view="[[params.view]]"
           on-close="_handleKeyboardShortcutDialogClose"></gr-keyboard-shortcuts-dialog>
     </gr-overlay>
+    <template is="dom-repeat" items="[[_serverConfig.plugin.js_resource_paths]]" as="path">
+      <script src$="/[[path]]" defer></script>
+    </template>
     <gr-rest-api-interface id="restAPI"></gr-rest-api-interface>
   </template>
   <script src="gr-app.js"></script>

polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-js-api-interface_test.html

@@ -35,7 +35,8 @@ limitations under the License.
 
     setup(function() {
       element = fixture('basic');
-      Gerrit.install(function(p) { plugin = p; });
+      Gerrit.install(function(p) { plugin = p; },
+          'http://test.com/plugins/testplugin/static/test.js');
     });
 
     teardown(function() {
@@ -43,6 +44,12 @@ limitations under the License.
       plugin = null;
     });
 
+    test('url', function() {
+      assert.equal(plugin.url(), 'http://test.com/plugins/testplugin/');
+      assert.equal(plugin.url('/static/test.js'),
+          'http://test.com/plugins/testplugin/static/test.js');
+    });
+
     test('history event', function(done) {
       plugin.on(element.EventType.HISTORY, function(path) {
         assert.equal(path, '/path/to/awesomesauce');
@@ -56,8 +63,8 @@ limitations under the License.
       var testChange = {
         _number: 42,
         revisions: {
-          def: { _number: 2 },
-          abc: { _number: 1 },
+          def: {_number: 2},
+          abc: {_number: 1},
         },
       };
       plugin.on(element.EventType.SHOW_CHANGE, function(change, revision) {

polygerrit-ui/app/elements/shared/gr-js-api-interface/gr-public-js-api.js

@@ -14,13 +14,27 @@
 (function(window) {
   'use strict';
 
-  function Plugin() {}
+  function Plugin(opt_url) {
+    this._url = new URL(opt_url);
+    if (this._url.pathname.indexOf('/plugins') !== 0) {
+      console.warn('Plugin not being loaded from /plugins base path:',
+          this._url.href, '— Unable to determine name.');
+      return;
+    }
+    this._name = this._url.pathname.split('/')[2];
+  }
+
+  Plugin.prototype._name = '';
 
   Plugin.prototype.on = function(eventName, callback) {
     document.createElement('gr-js-api-interface').addEventCallback(eventName,
         callback);
   };
 
+  Plugin.prototype.url = function(opt_path) {
+    return this._url.origin + '/plugins/' + this._name + (opt_path || '/');
+  };
+
   var Gerrit = window.Gerrit || {};
 
   Gerrit.css = function(rulesStr) {
@@ -35,8 +49,10 @@
     return name;
   },
 
-  Gerrit.install = function(callback) {
-    callback(new Plugin());
+  Gerrit.install = function(callback, opt_src) {
+    // TODO(andybons): Polyfill currentScript for IE10/11 (edge supports it).
+    var src = opt_src || (document.currentScript && document.currentScript.src);
+    callback(new Plugin(src));
   };
 
   window.Gerrit = Gerrit;