Add support for updating build configuration

Author: Winston Liu

lib/main.js

@@ -36,6 +36,22 @@ class JavaLanguageClient extends AutoLanguageClient {
         atom.config.set('ide-java.server.errors.incompleteClasspath.severity', 'ignore')
       },
       'java.ignoreIncompleteClasspath.help': () => { shell.openExternal('https://github.com/atom/ide-java/wiki/Incomplete-Classpath-Warning') },
+      'java.projectConfiguration.status': (command, connection) => {
+        // Arguments:
+        // - 0: Object containing build file URI
+        // - 1: 'disabled' for Never, 'interactive' for Now, 'automatic' for Always
+        const [uri, status] = command.arguments
+        const statusMap = {
+          0: 'disabled',
+          1: 'interactive',
+          2: 'automatic',
+        }
+        atom.config.set('ide-java.server.configuration.updateBuildConfiguration', statusMap[status])
+
+        if (status !== 0) {
+          connection.sendCustomRequest('java/projectConfigurationUpdate', uri)
+        }
+      }
     }
 
     // Migrate ide-java.errors.incompleteClasspathSeverity -> ide-java.server.errors.incompleteClasspath.severity
@@ -210,7 +226,16 @@ class JavaLanguageClient extends AutoLanguageClient {
   }
 
   preInitialization(connection) {
-    connection.onCustom('language/status', (e) => this.updateStatusBar(`${e.type.replace(/^Started$/, '')} ${e.message}`))
+    let started = false
+    connection.onCustom('language/status', (status) => {
+      if (started) return
+      this.updateStatusBar(status.message)
+      // Additional messages can be generated after the server is ready
+      // that we don't want to show (for example, build refreshes)
+      if (status.type === 'Started') {
+        started = true
+      }
+    })
     connection.onCustom('language/actionableNotification', (notification) => this.actionableNotification(notification, connection))
   }