first last cell shortcuts (#24)

* first last cell shortcuts

* meant to bump patch number

Author: jwkvam

README.md

@@ -10,9 +10,25 @@ Notebook cell vim bindings
 I want to acknowledge [Alisue](https://github.com/lambdalisue) and his excellent work creating [vim bindings](https://github.com/lambdalisue/jupyter-vim-binding) for Jupyter notebooks.
 I hope this extension can meet the high bar his work set.
 
+## Modes
+
+This extension splits Jupyter edit mode into two modes: Vim command mode and Vim insert mode.
+Three editing modes now exist: Jupyter command, Vim command, and Vim insert.
+
 ## Key Bindings
 
-| Chord          | Command                   |
+Shortcuts this extension introduces:
+
+### Vim Ex commands
+
+| Command  | Action                     |
+| -------  | ------                     |
+| :w[rite] | Save Notebook              |
+| :q[uit]  | Enter Jupyter command mode |
+
+### Vim command bindings
+
+| Chord          | Action                    |
 | -----          | -------                   |
 | Ctrl-O, U      | Undo Cell Action          |
 | Ctrl-O, -      | Split Cell at Cursor      |
@@ -25,11 +41,20 @@ I hope this extension can meet the high bar his work set.
 | Ctrl-O, Ctrl-O | Insert Cell Above         |
 | Ctrl-J         | Select Cell Below         |
 | Ctrl-K         | Select Cell Above         |
+| Ctrl-O, G      | Select First Cell         |
+| Ctrl-O, Ctrl-G | Select Last Cell          |
 | Command/Ctrl-1 | Code Cell Mode            |
 | Command/Ctrl-2 | Markdown Cell Mode        |
 | Command/Ctrl-3 | Raw Cell Mode             |
 | Shift-Escape   | Leave Vim Mode            |
 
+### Jupyter command bindings
+
+| Chord   | Action            |
+| -----   | ------            |
+| G, G    | Select First Cell |
+| Shift-G | Select Last Cell  |
+
 ## Prerequisites
 
 * JupyterLab

package.json

@@ -1,6 +1,6 @@
 {
   "name": "jupyterlab_vim",
-  "version": "0.4.1",
+  "version": "0.4.2-dev",
   "description": "Code cell vim bindings",
   "author": "Jacques Kvam",
   "main": "lib/index.js",

src/index.ts

@@ -300,6 +300,30 @@ function activateCellVim(app: JupyterLab, tracker: INotebookTracker): Promise<vo
             },
             isEnabled
         });
+        commands.addCommand('select-first-cell', {
+            label: 'Select First Cell',
+            execute: args => {
+                const current = getCurrent(args);
+
+                if (current) {
+                    current.notebook.activeCellIndex = 0;
+                    current.notebook.deselectAll();
+                }
+            },
+            isEnabled
+        });
+        commands.addCommand('select-last-cell', {
+            label: 'Select Last Cell',
+            execute: args => {
+                const current = getCurrent(args);
+
+                if (current) {
+                    current.notebook.activeCellIndex = current.notebook.widgets.length - 1;
+                    current.notebook.deselectAll();
+                }
+            },
+            isEnabled
+        });
 
         commands.addKeyBinding({
             selector: '.jp-Notebook.jp-mod-editMode',
@@ -412,6 +436,26 @@ function activateCellVim(app: JupyterLab, tracker: INotebookTracker): Promise<vo
             keys: ['Accel 3'],
             command: 'notebook:change-cell-to-raw'
         });
+        commands.addKeyBinding({
+            selector: '.jp-Notebook.jp-mod-editMode',
+            keys: ['Ctrl O', 'G'],
+            command: 'select-first-cell'
+        });
+        commands.addKeyBinding({
+            selector: '.jp-Notebook.jp-mod-editMode',
+            keys: ['Ctrl O', 'Ctrl G'],
+            command: 'select-last-cell'
+        });
+        commands.addKeyBinding({
+            selector: '.jp-Notebook.jp-mod-commandMode',
+            keys: ['G', 'G'],
+            command: 'select-first-cell'
+        });
+        commands.addKeyBinding({
+            selector: '.jp-Notebook.jp-mod-commandMode',
+            keys: ['Shift G'],
+            command: 'select-last-cell'
+        });
 
         // tslint:disable:no-unused-expression
         new VimCell(app, tracker);