From 45fcb6578aa6479d18fd3b6d907d220e856c4a33 Mon Sep 17 00:00:00 2001
From: Christoph Reiter <reiter.christoph@gmail.com>
Date: Tue, 13 Aug 2019 11:52:49 +0200
Subject: [PATCH] Implement setter for the next language
---
packages/language-select/src/language-select.js | 15 ++++++++++++---
packages/language-select/test/unit.js | 10 ++++++++++
2 files changed, 22 insertions(+), 3 deletions(-)
diff --git a/packages/language-select/src/language-select.js b/packages/language-select/src/language-select.js
index 21d87172..da63a774 100644
--- a/packages/language-select/src/language-select.js
+++ b/packages/language-select/src/language-select.js
@@ -21,14 +21,22 @@ class LanguageSelect extends LitElement {
i18n.t('en-action');
}
- _getNextLanguage() {
- var index = this.languages.indexOf(this.lang);
+ _getNextLanguage(lang) {
+ var index = this.languages.indexOf(lang);
var next = this.languages[index + 1];
if (typeof next === 'undefined')
next = this.languages[0];
return next;
}
+ _getPreviousLanguage(lang) {
+ var index = this.languages.indexOf(lang);
+ var prev = this.languages[index - 1];
+ if (typeof prev === 'undefined')
+ prev = this.languages[this.languages.length - 1];
+ return prev;
+ }
+
static get properties() {
return {
lang: {type: String},
@@ -63,10 +71,11 @@ class LanguageSelect extends LitElement {
}
set next(value) {
+ this.lang = this._getPreviousLanguage(value);
}
get next() {
- return this._getNextLanguage();
+ return this._getNextLanguage(this.lang);
}
static get styles() {
diff --git a/packages/language-select/test/unit.js b/packages/language-select/test/unit.js
index 3511aa8a..1ac3cc0c 100644
--- a/packages/language-select/test/unit.js
+++ b/packages/language-select/test/unit.js
@@ -34,6 +34,16 @@ describe('vpu-language-select basics', () => {
expect(node.next).to.equal('en');
expect(events.length).to.equal(2);
});
+
+ it('change next', () => {
+ node.lang = 'en';
+ expect(node.next).to.equal('de');
+ expect(node.lang).to.equal('en');
+ node.next = 'en';
+ expect(node.next).to.equal('en');
+ expect(node.lang).to.equal('de');
+ expect(events.length).to.equal(2);
+ });
});
describe('vpu-language-select demo', () => {
--
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