first version

kirby/src/Cms/AppTranslations.php

@@ -0,0 +1,127 @@
+<?php
+
+namespace Kirby\Cms;
+
+use Kirby\Toolkit\I18n;
+
+trait AppTranslations
+{
+    protected $translations;
+
+    /**
+     * Setup internationalization
+     *
+     * @return void
+     */
+    protected function i18n()
+    {
+        I18n::$load = function ($locale) {
+            $data = [];
+
+            if ($translation = $this->translation($locale)) {
+                $data = $translation->data();
+            }
+
+            // inject translations from the current language
+            if ($this->multilang() === true && $language = $this->languages()->find($locale)) {
+                $data = array_merge($data, $language->translations());
+            }
+
+            return $data;
+        };
+
+        I18n::$locale = function () {
+            if ($this->multilang() === true) {
+                return $this->defaultLanguage()->code();
+            } else {
+                return 'en';
+            }
+        };
+
+        I18n::$fallback = function () {
+            if ($this->multilang() === true) {
+                return $this->defaultLanguage()->code();
+            } else {
+                return 'en';
+            }
+        };
+
+        I18n::$translations = [];
+    }
+
+    /**
+     * Load and set the current language if it exists
+     * Otherwise fall back to the default language
+     *
+     * @param string $languageCode
+     * @return Language|null
+     */
+    public function setCurrentLanguage(string $languageCode = null)
+    {
+        if ($languageCode === null) {
+            return $this->language = null;
+        }
+
+        if ($language = $this->language($languageCode)) {
+            $this->language = $language;
+        } else {
+            $this->language = $this->defaultLanguage();
+        }
+
+        if ($this->language) {
+            setlocale(LC_ALL, $this->language->locale());
+        }
+
+        return $this->language;
+    }
+
+    /**
+     * Set the current translation
+     *
+     * @param string $translationCode
+     * @return void
+     */
+    public function setCurrentTranslation(string $translationCode = null)
+    {
+        I18n::$locale = $translationCode ?? 'en';
+    }
+
+    /**
+     * Load a specific translation by locale
+     *
+     * @param string|null $locale
+     * @return Translation|null
+     */
+    public function translation(string $locale = null)
+    {
+        $locale = $locale ?? I18n::locale();
+        $locale = basename($locale);
+
+        // prefer loading them from the translations collection
+        if (is_a($this->translations, 'Kirby\Cms\Translations') === true) {
+            if ($translation = $this->translations()->find($locale)) {
+                return $translation;
+            }
+        }
+
+        // get injected translation data from plugins etc.
+        $inject = $this->extensions['translations'][$locale] ?? [];
+
+        // load from disk instead
+        return Translation::load($locale, $this->root('translations') . '/' . $locale . '.json', $inject);
+    }
+
+    /**
+     * Returns all available translations
+     *
+     * @return Translations
+     */
+    public function translations()
+    {
+        if (is_a($this->translations, 'Kirby\Cms\Translations') === true) {
+            return $this->translations;
+        }
+
+        return Translations::load($this->root('translations'), $this->extensions['translations'] ?? []);
+    }
+}