Fixed some follow ups after restructuring and issues around generator-theia

doc/Internals.md

@@ -198,20 +198,6 @@ And it returns the loggerServer as the object that will be exposed over JSON-RPC
 
 This connects the factory to the connection.
 
-So now all is set for backend/frontend communication.
-
-The only point left is that if you're using the webpack dev server which
-you probably are you need to add something like this:
-
-``` javascript
-            '/logger/*': {
-                target: 'ws://localhost:3000',
-                ws: true
-            },
-```
-
-To webpack.config.js so that the requests are proxied to the backend properly.
-
 ## Connecting to a service
 
 So now that we have a backend service let's see how to connect to it from

generator-theia/src/common/abstract-backend-generator.ts

@@ -42,11 +42,16 @@ function start() {
     application.use(express.static(path.join(__dirname, '../../lib'), {
         index: 'index.html'
     }));
-    application.start();
+    return application.start(${this.ifWeb(`${this.model.config.port}, '${this.model.config.host}'`)})
 }
 
-Promise.resolve()${this.compileBackendModuleImports(backendModules)}
-.then(start);`;
+module.exports = Promise.resolve()${this.compileBackendModuleImports(backendModules)}
+    .then(start).catch(reason => {
+        console.error('Failed to start the backend application.');
+        if (reason) {
+            console.error(reason);
+        }
+    });`;
     }
 
 }

generator-theia/src/common/abstract-frontend-generator.ts

@@ -60,8 +60,13 @@ function start() {
     application.start();
 }
 
-Promise.resolve()${this.compileFrontendModuleImports(frontendModules)}
-.then(start);`;
+module.exports = Promise.resolve()${this.compileFrontendModuleImports(frontendModules)}
+    .then(start).catch(reason => {
+        console.error('Failed to start the frontend application.');
+        if (reason) {
+            console.error(reason);
+        }
+    });`;
     }
 
 }

generator-theia/src/common/abstract-generator.ts

@@ -51,7 +51,7 @@ export abstract class AbstractGenerator {
                 return `Promise.resolve(${invocation})`;
             }
             return invocation;
-        }).map(statement => `.then(function () { return ${statement}.then(load) })`);
+        }).map(statement => `    .then(function () { return ${statement}.then(load) })`);
         return os.EOL + lines.join(os.EOL);
     }
 
@@ -60,4 +60,20 @@ export abstract class AbstractGenerator {
         return copyright ? copyright + os.EOL : '';
     }
 
+    protected isWeb(): boolean {
+        return this.model.target === 'web';
+    }
+
+    protected isElectron(): boolean {
+        return this.model.target === 'electron';
+    }
+
+    protected ifWeb(value: string, defaultValue: string = '') {
+        return this.isWeb() ? value : defaultValue;
+    }
+
+    protected ifElectron(value: string, defaultValue: string = '') {
+        return this.isElectron() ? value : defaultValue;
+    }
+
 }

generator-theia/src/common/generator-model.ts

@@ -136,7 +136,7 @@ export class Model {
                 for (const extension of extensions) {
                     const modulePath = extension[primary] || (secondary && extension[secondary]);
                     if (typeof modulePath === 'string') {
-                        const extensionPath = path.join(extensionPackage.name, modulePath);
+                        const extensionPath = path.join(extensionPackage.name, modulePath).split(path.sep).join('/')
                         result.set(`${primary}_${moduleIndex}`, extensionPath);
                         moduleIndex = moduleIndex + 1;
                     }

generator-theia/src/electron/electron-frontend-generator.ts

@@ -28,21 +28,20 @@ process.env.LC_NUMERIC = 'C';
 const electron = require('electron');
 const path = require('path');
 
-let mainWindow = undefined;
-
 electron.app.on('window-all-closed', function () {
     if (process.platform !== 'darwin') {
         electron.app.quit();
     }
 });
 
 electron.app.on('ready', function () {
-    require("../backend/main");
-    mainWindow = new electron.BrowserWindow({ width: 1024, height: 728 });
-    mainWindow.webContents.openDevTools();
-    mainWindow.loadURL(\`file://\${path.join(__dirname, '../../lib/index.html')}\`);
+    const mainWindow = new electron.BrowserWindow({ width: 1024, height: 728 });
+    require("../backend/main").then(server => {
+        mainWindow.loadURL(\`file://\${path.join(__dirname, '../../lib/index.html')}?port=\${server.address().port}\`);
+        mainWindow.webContents.openDevTools();
+    });
     mainWindow.on('closed', function () {
-        mainWindow = undefined;
+        electron.app.exit(0);
     });
 });`;
     }

packages/core/src/common/endpoint.ts → packages/core/src/browser/endpoint.ts

@@ -5,7 +5,7 @@
  * You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
  */
 
-import URI from "./uri";
+import URI from "../common/uri";
 
 /**
  * An endpoint provides URLs for http and ws, based on configuration ansd defaults.
@@ -24,7 +24,27 @@ export class Endpoint {
     }
 
     protected get host() {
-        return location.host || "127.0.0.1:3000"
+        if (location.host) {
+            return location.host;
+        }
+        return 'localhost:' + this.port;
+    }
+
+    protected get port(): string {
+        return this.getSearchParam('port', '3000');
+    }
+
+    protected getSearchParam(name: string, defaultValue: string): string {
+        const search = location.search;
+        if (!search) {
+            return defaultValue;
+        }
+        return search.substr(1).split('&')
+            .filter(value => value.startsWith(name + '='))
+            .map(value => {
+                const encoded = value.substr(name.length + 1);
+                return decodeURIComponent(encoded)
+            })[0] || defaultValue;
     }
 
     protected get wsScheme() {

packages/core/src/browser/index.ts

@@ -13,4 +13,5 @@ export * from './context-menu-renderer';
 export * from './widgets';
 export * from './dialogs';
 export * from './tree';
-export * from './messaging';
+export * from './messaging';
+export * from './endpoint';

packages/core/src/browser/messaging/connection.ts

@@ -7,7 +7,8 @@
 
 import { injectable, interfaces } from "inversify";
 import { listen as doListen, Logger, ConsoleLogger } from "vscode-ws-jsonrpc";
-import { ConnectionHandler, JsonRpcProxyFactory, JsonRpcProxy, Endpoint } from "../../common";
+import { ConnectionHandler, JsonRpcProxyFactory, JsonRpcProxy } from "../../common";
+import { Endpoint } from "../endpoint";
 const ReconnectingWebSocket = require('reconnecting-websocket');
 
 export interface WebSocketOptions {

packages/core/src/common/index.ts

@@ -18,7 +18,6 @@ export * from './selection-service';
 export * from './os';
 export * from './resource';
 export * from './contribution-provider';
-export * from './endpoint';
 export * from './path';
 export * from './logger';
 export * from './messaging';

packages/core/src/node/backend-application.ts

@@ -46,11 +46,11 @@ export class BackendApplication {
         this.app.use(...handlers);
     }
 
-    start(port: number = 3000): Promise<void> {
-        return new Promise<void>(resolve => {
-            const server = this.app.listen(port, () => {
-                this.logger.info(`Theia app listening on port ${port}.`);
-                resolve();
+    start(port: number = 0, hostname: string = 'localhost'): Promise<http.Server> {
+        return new Promise(resolve => {
+            const server = this.app.listen(port, hostname, () => {
+                this.logger.info(`Theia app listening on port ${server.address().port}.`);
+                resolve(server);
             });
             for (const contrib of this.contributionsProvider.getContributions()) {
                 if (contrib.onStart) {

packages/terminal/src/browser/terminal-frontend-contribution.ts

@@ -6,11 +6,8 @@
  */
 
 import { inject, injectable } from "inversify"
-import {
-    CommandContribution, Command, CommandRegistry, Endpoint,
-    MenuContribution, MenuModelRegistry,
-} from '@theia/core/lib/common';
-import { FrontendApplication } from '@theia/core/lib/browser';
+import { CommandContribution, Command, CommandRegistry, MenuContribution, MenuModelRegistry } from '@theia/core/lib/common';
+import { FrontendApplication, Endpoint } from '@theia/core/lib/browser';
 import { FileMenus } from '@theia/filesystem/lib/browser/filesystem-commands';
 import { TerminalWidgetFactory, TerminalWidgetOptions } from './terminal-widget';
 

packages/terminal/src/browser/terminal-widget.ts

@@ -6,9 +6,8 @@
  */
 
 import { inject, injectable } from "inversify";
-import { Endpoint, Disposable } from '@theia/core/lib/common';
-import { Widget, BaseWidget, Message } from '@theia/core/lib/browser';
-import { WebSocketConnectionProvider } from '@theia/core/lib/browser';
+import { Disposable } from '@theia/core/lib/common';
+import { Widget, BaseWidget, Message, WebSocketConnectionProvider, Endpoint } from '@theia/core/lib/browser';
 import { WorkspaceService } from "@theia/workspace/lib/browser";
 import * as Xterm from 'xterm';
 import 'xterm/lib/addons/fit/fit';

packages/terminal/src/node/terminal-backend-contribution.ts

@@ -6,6 +6,7 @@
  */
 
 import * as http from 'http';
+import * as pty from 'node-pty';
 import * as express from 'express';
 import * as bodyParser from 'body-parser';
 import { injectable } from 'inversify';
@@ -14,8 +15,6 @@ import { isWindows } from "@theia/core/lib/common";
 import { BackendApplicationContribution } from '@theia/core/lib/node';
 import { openSocket } from '@theia/core/lib/node';
 
-const pty = require("node-pty");
-
 @injectable()
 export class TerminalBackendContribution implements BackendApplicationContribution {
     private terminals: Map<number, any> = new Map()
@@ -36,8 +35,8 @@ export class TerminalBackendContribution implements BackendApplicationContributi
                 name: 'xterm-color',
                 cols: cols || 80,
                 rows: rows || 24,
-                cwd: process.env.PWD,
-                env: process.env
+                cwd: process.cwd(),
+                env: process.env as any
             });
 
             const root: { uri?: string } | undefined = req.body;
@@ -47,8 +46,9 @@ export class TerminalBackendContribution implements BackendApplicationContributi
                 term.write("source ~/.profile\n");
             }
 
-            this.terminals.set(term.pid, term);
-            res.send(term.pid.toString());
+            const pid = (term as any).pid;
+            this.terminals.set(pid, term);
+            res.send(pid.toString());
             res.end();
         });
 

scripts/generate.js

@@ -14,7 +14,7 @@ function generate(name, cwd, prefix, target) {
         const command = 'yo';
         const args = ['theia:' + target, '--force'];
         console.log(`${name}: ${command} ${args.join(' ')}`);
-        const p = cp.spawn(command, args, { cwd });
+        const p = cp.spawn(command, args, { cwd, env: process.env });
         p.on('exit', code => {
             if (code !== 0) {
                 process.exit(code)