Add emacs keybindings

.gitignore

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+node_modules
+.browser_modules
+lib
+*.log
+*-app/*
+!*-app/package.json

.vscode/launch.json

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+{
+    // Use IntelliSense to learn about possible Node.js debug attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "type": "node",
+            "request": "launch",
+            "name": "Start Browser Backend",
+            "program": "${workspaceRoot}/browser-app/src-gen/backend/main.js",
+            "args": [
+                "--loglevel=debug",
+                "--port=3000",
+                "--no-cluster"
+            ],
+            "env": {
+                "NODE_ENV": "development"
+            },
+            "sourceMaps": true,
+            "outFiles": [
+                "${workspaceRoot}/node_modules/@theia/*/lib/**/*.js",
+                "${workspaceRoot}/browser-app/lib/**/*.js",
+                "${workspaceRoot}/browser-app/src-gen/**/*.js"
+            ],
+            "smartStep": true,
+            "internalConsoleOptions": "openOnSessionStart",
+            "outputCapture": "std"
+        },
+        {
+            "type": "node",
+            "request": "launch",
+            "name": "Start Electron Backend",
+            "runtimeExecutable": "${workspaceRoot}/node_modules/.bin/electron",
+            "windows": {
+                "runtimeExecutable": "${workspaceRoot}/node_modules/.bin/electron.cmd"
+            },
+            "program": "${workspaceRoot}/electron-app/src-gen/frontend/electron-main.js",
+            "protocol": "inspector",
+            "args": [
+                "--loglevel=debug",
+                "--hostname=localhost",
+                "--no-cluster"
+            ],
+            "env": {
+                "NODE_ENV": "development"
+            },
+            "sourceMaps": true,
+            "outFiles": [
+                "${workspaceRoot}/electron-app/src-gen/frontend/electron-main.js",
+                "${workspaceRoot}/electron-app/src-gen/backend/main.js",
+                "${workspaceRoot}/electron-app/lib/**/*.js",
+                "${workspaceRoot}/node_modules/@theia/*/lib/**/*.js"
+            ],
+            "smartStep": true,
+            "internalConsoleOptions": "openOnSessionStart",
+            "outputCapture": "std"
+        }
+    ]
+}

.vscode/settings.json

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+{
+    "typescript.tsdk": "node_modules/typescript/lib"
+}

README.md

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+# Emacs Extension
+The example of how to build the Theia-based applications with the emacs-extension.
+
+## Getting started
+
+Install [nvm](https://github.com/creationix/nvm#install-script).
+
+    curl -o- https://raw.githubusercontent.com/creationix/nvm/v0.33.5/install.sh | bash
+
+Install npm and node.
+
+    nvm install 8
+    nvm use 8
+
+Install yarn.
+
+    npm install -g yarn
+
+## Running the browser example
+
+    yarn rebuild:browser
+    cd browser-app
+    yarn start
+
+Open http://localhost:3000 in the browser.
+
+## Running the Electron example
+
+    yarn rebuild:electron
+    cd electron-app
+    yarn start
+
+## Developing with the browser example
+
+Start watching of the emacs extension.
+
+    cd emacs-extension
+    yarn watch
+
+Start watching of the browser example.
+
+    yarn rebuild:browser
+    cd browser-app
+    yarn watch
+
+Launch `Start Browser Backend` configuration from VS code.
+
+Open http://localhost:3000 in the browser.
+
+## Developing with the Electron example
+
+Start watching of the emacs-extension.
+
+    cd emacs-extension
+    yarn watch
+
+Start watching of the electron example.
+
+    yarn rebuild:electron
+    cd electron-app
+    yarn watch
+
+Launch `Start Electron Backend` configuration from VS code.
+
+## Publishing emacs-extension
+
+Create a npm user and login to the npm registry, [more on npm publishing](https://docs.npmjs.com/getting-started/publishing-npm-packages).
+
+    npm login
+
+Publish packages with lerna to update versions properly across local packages, [more on publishing with lerna](https://github.com/lerna/lerna#publish).
+
+    npx lerna publish
+
+### Operation
+Use Shift+DEL to cut to clipboard, Shift+Insert to paste from clipboard.
+
+### Move command
+|Command        | Desc                                              |
+|---------------|---------------------------------------------------|
+| `C-f`         | Move forward                                      |
+| `C-b`         | Move backward                                     |
+| `M-n`         | Move to the next line (C+n - new tab in browser)  |
+| `C-p`         | Move to the previous line                         |
+| `C-a`         | Move to the beginning of line                     |
+| `C-e`         | Move to the end of line                           |
+| `M-f`         | Move forward by one word unit                     |
+| `M-b`         | Move backward by one word unit                    |
+| `M->`         | Move to the end of buffer                         |
+| `M-<`         | Move to the beginning of buffer                   |
+| `C-v`         | Scroll down by one screen unit                    |
+| `M-v`         | Scroll up by one screen unit                      |
+| `M-g g`       | Jump to line (command palette)                    |
+
+
+### Search Command
+|Command        | Desc                                              |
+|---------------|---------------------------------------------------|
+| `C-s`         | Search forward                                    |
+| `C-r`         | Search backward                                   |
+| `C-M-n`       | Add selection to next find match                  |
+
+### Edit command
+|Command        | Desc                                              |
+|---------------|---------------------------------------------------|
+| `C-d`         | Delete right (DEL)                                |
+| `C-h`         | Delete left (BACKSPACE)                           |
+| `M-d`         | Delete word                                       |
+| `C-k`         | Kill to line end                                  |
+| `C-x h`       | Select All                                        |
+| `C-x u (C-/)` | Undo                                              |
+| `C-;`         | Toggle line comment in and out                    |
+| `M-;`         | Toggle region comment in and out                  |
+
+### Other command
+|Command        | Desc                                              |
+|---------------|---------------------------------------------------|
+| `M-x`         | Open command palette                              |
+| `C-x C-s`     | Save                                              |
+| `C-x b`       | QuickOpen a file                                  |

browser-app/package.json

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+{
+  "private": true,
+  "name": "browser-app",
+  "version": "0.0.0",
+  "dependencies": {
+    "@theia/core": "0.3.12",
+    "@theia/filesystem": "0.3.12",
+    "@theia/file-search": "0.3.12",
+    "@theia/workspace": "0.3.12",
+    "@theia/preferences": "0.3.12",
+    "@theia/navigator": "0.3.12",
+    "@theia/process": "0.3.12",
+    "@theia/terminal": "0.3.12",
+    "@theia/editor": "0.3.12",
+    "@theia/languages": "0.3.12",
+    "@theia/markers": "0.3.12",
+    "@theia/monaco": "0.3.12",
+    "@theia/typescript": "0.3.12",
+    "@theia/messages": "0.3.12",
+    "emacs-extension": "0.0.0"
+  },
+  "devDependencies": {
+    "@theia/cli": "0.3.12"
+  },
+  "scripts": {
+    "prepare": "theia build --mode development",
+    "start": "theia start",
+    "watch": "theia build --watch --mode development"
+  },
+  "theia": {
+    "target": "browser"
+  }
+}

electron-app/package.json

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+{
+  "private": true,
+  "name": "electron-app",
+  "version": "0.0.0",
+  "dependencies": {
+    "@theia/core": "0.3.12",
+    "@theia/filesystem": "0.3.12",
+    "@theia/file-search": "0.3.12",
+    "@theia/workspace": "0.3.12",
+    "@theia/preferences": "0.3.12",
+    "@theia/navigator": "0.3.12",
+    "@theia/process": "0.3.12",
+    "@theia/terminal": "0.3.12",
+    "@theia/editor": "0.3.12",
+    "@theia/languages": "0.3.12",
+    "@theia/markers": "0.3.12",
+    "@theia/monaco": "0.3.12",
+    "@theia/typescript": "0.3.12",
+    "@theia/messages": "0.3.12",
+    "emacs-extension": "0.0.0"
+  },
+  "devDependencies": {
+    "@theia/cli": "0.3.12"
+  },
+  "scripts": {
+    "prepare": "theia build",
+    "start": "theia start",
+    "watch": "theia build --watch"
+  },
+  "theia": {
+    "target": "electron"
+  }
+}

emacs-extension/package.json

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+{
+  "name": "emacs-extension",
+  "keywords": [
+    "theia-extension"
+  ],
+  "version": "0.0.0",
+  "files": [
+    "lib",
+    "src"
+  ],
+  "dependencies": {
+    "@theia/core": "0.3.12",
+    "@theia/file-search": "0.3.12",
+    "@theia/monaco": "0.3.12"
+  },
+  "devDependencies": {
+    "rimraf": "2.6.2",
+    "typescript": "2.7.2"
+  },
+  "scripts": {
+    "prepare": "yarn run clean && yarn run build",
+    "clean": "rimraf lib",
+    "build": "tsc",
+    "watch": "tsc -w"
+  },
+  "theiaExtensions": [
+    {
+      "frontend": "lib/browser/emacs-frontend-module"
+    }
+  ]
+}

emacs-extension/src/browser/editor-agent.ts

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+/*********************************************************************
+ * Copyright (c) 2018 Red Hat, Inc.
+ *
+ * This program and the accompanying materials are made
+ * available under the terms of the Eclipse Public License 2.0
+ * which is available at https://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ **********************************************************************/
+
+import { injectable, inject } from "inversify";
+import { EditorManager } from "@theia/editor/lib/browser";
+import { MonacoEditor } from "@theia/monaco/lib/browser/monaco-editor";
+
+@injectable()
+export class EditorAgent {
+    @inject(EditorManager) protected readonly editorManager!: EditorManager;
+
+    getActiveEditor(): MonacoEditor | undefined {
+        const editorWidget = this.editorManager.activeEditor!;
+        const activeEditor = editorWidget.editor;
+
+        return activeEditor instanceof MonacoEditor ? activeEditor as MonacoEditor : undefined;
+    }
+
+    isEditorFocused(): boolean {
+        const widget = this.editorManager.activeEditor;
+        return !!widget && widget.editor.isFocused();
+    }
+
+    executeCommand(commandId: string) {
+        const editor = this.getActiveEditor()!;
+        editor.commandService.executeCommand(commandId);
+    }
+}