From 7c0035c971ddc6a45893a02f51b707fba2ddadc2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Farkas=20J=C3=B3zsef?= <fjozsef001@gmail.com>
Date: Sat, 26 Nov 2016 23:36:17 +0100
Subject: [PATCH] Don't allow the deletion of the last keymap

Closes #178
---
 src/components/keymap/edit/keymap-edit.component.html     | 2 +-
 src/components/keymap/edit/keymap-edit.component.ts       | 6 +++++-
 src/components/keymap/header/keymap-header.component.html | 1 +
 src/components/keymap/header/keymap-header.component.ts   | 2 ++
 4 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/components/keymap/edit/keymap-edit.component.html b/src/components/keymap/edit/keymap-edit.component.html
index a929aedd..6d39d7b2 100644
--- a/src/components/keymap/edit/keymap-edit.component.html
+++ b/src/components/keymap/edit/keymap-edit.component.html
@@ -1,5 +1,5 @@
 <template [ngIf]="keymap$ | async">
-    <keymap-header [keymap]="keymap$ | async"></keymap-header>
+    <keymap-header [keymap]="keymap$ | async" [deletable]="deletable$ | async"></keymap-header>
     <svg-keyboard-wrap [keymap]="keymap$ | async"></svg-keyboard-wrap>
 </template>
 
diff --git a/src/components/keymap/edit/keymap-edit.component.ts b/src/components/keymap/edit/keymap-edit.component.ts
index 426cd9b1..da3b56c0 100644
--- a/src/components/keymap/edit/keymap-edit.component.ts
+++ b/src/components/keymap/edit/keymap-edit.component.ts
@@ -12,7 +12,7 @@ import { ConnectableObservable } from 'rxjs/observable/ConnectableObservable';
 
 import { Keymap } from '../../../config-serializer/config-items/Keymap';
 import { AppState } from '../../../store';
-import { getKeymap } from '../../../store/reducers/keymap';
+import { getKeymap, getKeymapEntities } from '../../../store/reducers/keymap';
 
 @Component({
     selector: 'keymap-edit',
@@ -24,6 +24,7 @@ import { getKeymap } from '../../../store/reducers/keymap';
 })
 export class KeymapEditComponent {
     private keymap$: Observable<Keymap>;
+    private deletable$: Observable<boolean>;
 
     constructor(
         private store: Store<AppState>,
@@ -37,5 +38,8 @@ export class KeymapEditComponent {
 
         this.keymap$ = keymapConnectable;
         keymapConnectable.connect();
+
+        this.deletable$ = store.let(getKeymapEntities())
+            .map((keymaps: Keymap[]) => keymaps.length > 1);
     }
 }
diff --git a/src/components/keymap/header/keymap-header.component.html b/src/components/keymap/header/keymap-header.component.html
index be8f3de9..0066911e 100644
--- a/src/components/keymap/header/keymap-header.component.html
+++ b/src/components/keymap/header/keymap-header.component.html
@@ -22,6 +22,7 @@
            (click)="setDefault()"
         ></i>
         <i class="glyphicon glyphicon-trash keymap__remove pull-right" title=""
+            *ngIf="deletable"
            data-toggle="tooltip"
            data-placement="left"
            data-original-title="Remove keymap"
diff --git a/src/components/keymap/header/keymap-header.component.ts b/src/components/keymap/header/keymap-header.component.ts
index 382445fc..0290f8bb 100644
--- a/src/components/keymap/header/keymap-header.component.ts
+++ b/src/components/keymap/header/keymap-header.component.ts
@@ -15,6 +15,8 @@ import { KeymapActions } from '../../../store/actions';
 })
 export class KeymapHeaderComponent implements OnChanges {
     @Input() keymap: Keymap;
+    @Input() deletable: boolean;
+
     @ViewChild('name') keymapName: ElementRef;
     @ViewChild('abbr') keymapAbbr: ElementRef;