Added "Folding" Keybindings (#4)

Added cell folding keybindings

New keybindings
z-c : close selected cell code
z-o : open selected cell code
z-m : close all cell code
z-r : open all cell code

Fixed language consistency.

Co-Authored-By: Ian Hunt-Isaak <[email protected]>

Author: kmdalton

History.md

@@ -1,5 +1,12 @@
 # History
 
+## 0.12.3 / 2020-04-25
+
+  * `z c` hides selected code cell
+  * `z o` shows selected code cell
+  * `z m` hides all code cells
+  * `z r` shows all code cells
+
 ## 0.12.2 / 2020-03-09
 
   * Change package.json information

README.md

@@ -95,6 +95,10 @@ Shortcuts this extension introduces:
 | Ctrl-E  | Move Cells Down   |
 | Ctrl-Y  | Move Cells Up     |
 | Z, Z    | Center Cell       |
+| Z, C    | Hide Code Cell |
+| Z, O    | Show Code Cell |
+| Z, M    | Hide All Code Cells |
+| Z, R    | Show All Code Cells  |
 
 ## Contributing
 

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@axlair/jupyterlab_vim",
-  "version": "0.12.2",
+  "version": "0.12.3",
   "description": "Code cell vim bindings",
   "author": "Axel Fahy",
   "license": "MIT",

src/index.ts

@@ -593,6 +593,26 @@ function activateCellVim(app: JupyterFrontEnd, tracker: INotebookTracker): Promi
             keys: ['Z', 'Z'],
             command: 'center-cell'
         });
+        commands.addKeyBinding({
+            selector: '.jp-Notebook:focus',
+            keys: ['Z', 'C'],
+            command: 'notebook:hide-cell-code'
+        });
+        commands.addKeyBinding({
+            selector: '.jp-Notebook:focus',
+            keys: ['Z', 'O'],
+            command: 'notebook:show-cell-code'
+        });
+        commands.addKeyBinding({
+            selector: '.jp-Notebook:focus',
+            keys: ['Z', 'M'],
+            command: 'notebook:hide-all-cell-code'
+        });
+        commands.addKeyBinding({
+            selector: '.jp-Notebook:focus',
+            keys: ['Z', 'R'],
+            command: 'notebook:show-all-cell-code'
+        });
         commands.addKeyBinding({
             selector: '.jp-Notebook.jp-mod-editMode',
             keys: ['Ctrl O', 'Z', 'Z'],