"isJapanese" check move (#730)

* Move isStringPartiallyJapanese out of ClipboardMonitor

* Create isStringPartiallyJapanese function

* Add textMayBeTranslatable

* Rename API function

* Rename internal function

* Add helper

* Update translatable check

* Pass language to TextScanner

* Pass language explicitly

* Use textMayBeTranslatable

* No redundant translatable check

* Update eslint

* Remove double newline

* Collapse

* Rename

1 files changed, 6 insertions, 3 deletions

diff --git a/ext/js/display/sandbox/structured-content-generator.js b/ext/js/display/sandbox/structured-content-generator.js
index 1dfde39b..90a47158 100644
--- a/ext/js/display/sandbox/structured-content-generator.js
+++ b/ext/js/display/sandbox/structured-content-generator.js
@@ -16,7 +16,7 @@
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
-import {isStringPartiallyJapanese} from '../../language/ja/japanese.js';
+import {getLanguageFromText} from '../../language/text-utilities.js';
 
 export class StructuredContentGenerator {
     /**
@@ -163,8 +163,11 @@ export class StructuredContentGenerator {
         if (typeof content === 'string') {
             if (content.length > 0) {
                 container.appendChild(this._createTextNode(content));
-                if (language === null && isStringPartiallyJapanese(content)) {
-                    container.lang = 'ja';
+                if (language === null) {
+                    const language2 = getLanguageFromText(content);
+                    if (language2 !== null) {
+                        container.lang = language2;
+                    }
                 }
             }
             return;