implemented View Logcat command

extension.js

@@ -1,23 +1,43 @@
 // The module 'vscode' contains the VS Code extensibility API
 // Import the module and reference it with the alias vscode in your code below
-var vscode = require('vscode');
+const vscode = require('vscode');
+const { AndroidContentProvider, openLogcatWindow } = require('./src/logcat');
+
+function getADBPort() {
+    var adbPort = 5037;
+    // there's surely got to be a better way than this...
+    var configs = vscode.workspace.getConfiguration('launch.configurations');
+    for (var i=0,config; config=configs.get(''+i); i++) {
+        if (config.type!=='android') continue;
+        if (config.request!=='launch') continue;
+        if (typeof config.adbPort === 'number' && config.adbPort === (config.adbPort|0))
+            adbPort = config.adbPort;
+        break;
+    }
+    return adbPort;
+}
 
 // this method is called when your extension is activated
 // your extension is activated the very first time the command is executed
 function activate(context) {
 
-    /* Nothing is done here. The debugger is launched from src/debugMain.js  */
+    /* Only the logcat stuff is configured here. The debugger is launched from src/debugMain.js  */
+    AndroidContentProvider.register(context, vscode.workspace);
+
+    // logcat connections require the (fake) websocket proxy to be up
+    // - take the ADB port from launch.json
+    const wsproxyserver = require('./src/wsproxy').proxy.Server(6037, getADBPort());
 
     // The commandId parameter must match the command field in package.json
     var disposables = [
-        /*
-        vscode.commands.registerCommand('extension.doCommand', config => {
-            return vscode.window.showInputBox({
-                placeHolder: "Enter a value",
-                value: "a value to display"
-            });
+        // add the view logcat handler
+        vscode.commands.registerCommand('android-dev-ext.view_logcat', () => {
+            openLogcatWindow(vscode);
+        }),
+        // watch for changes in the launch config
+        vscode.workspace.onDidChangeConfiguration(e => {
+            wsproxyserver.setADBPort(getADBPort());
         })
-        */
     ];
 
     var spliceparams = [context.subscriptions.length,0].concat(disposables);