Report precompile progress

1 files changed, 27 insertions, 1 deletions

diff --git a/lib/Main.ts b/lib/Main.ts
index 75ceed9..73ff8f9 100644
--- a/lib/Main.ts
+++ b/lib/Main.ts
@@ -89,7 +89,8 @@ export function activate(context: VSCode.ExtensionContext) {
         }
 
         // Create the language client and start the client.
-        let disposable = new LanguageClient('vscode-javac', 'Java Language Server', createServer, clientOptions).start();
+        let languageClient = new LanguageClient('vscode-javac', 'Java Language Server', createServer, clientOptions);
+        let disposable = languageClient.start();
 
         // Push the disposable to the context's subscriptions so that the 
         // client can be deactivated on extension deactivation
@@ -142,9 +143,34 @@ export function activate(context: VSCode.ExtensionContext) {
             //     docComment: { scope: 'comment.documentation', open: '/**', lineStart: ' * ', close: ' */' }
             // }
         });
+
+        // Show progress of pre-compiling each .java source
+        VSCode.window.withProgress({location: VSCode.ProgressLocation.Window, title: 'Indexing'}, progress => {
+            return new Promise((resolve, reject) => {
+                languageClient.onTelemetry((eventJson: string) => {
+                    let event = JSON.parse(eventJson) as CustomTelemetryEvent;
+                    
+                    switch (event.event) {
+                        case 'Progress':
+                            progress.report({message: event.file});
+
+                            break;
+                        case 'Done':
+                            resolve();
+
+                            break;
+                    }
+                });
+            });
+        });
     });
 }
 
+interface CustomTelemetryEvent {
+    event: 'Progress'|'Done';
+    file?: string;
+}
+
 function isJava8(javaExecutablePath: string): Promise<boolean> {
     return new Promise((resolve, reject) => {
         let result = ChildProcess.execFile(javaExecutablePath, ['-version'], { }, (error, stdout, stderr) => {