Action to unload all tags and free their used memory.

doc/de/index.docbook

@@ -3593,6 +3593,16 @@ spezifiziert. Die Kid3 Schnittstelle hat die folgenden Methoden:
 <para>Wenn OK wird true zurückgegeben.</para>
 </sect2>
 
+<sect2 id="dbus-unloadAllTags">
+<title>Entlade die Tags aller nicht selektierten oder modifizierten Dateien</title>
+<funcsynopsis>
+<funcprototype>
+  <funcdef><function>unloadAllTags</function></funcdef>
+  <void/>
+</funcprototype>
+</funcsynopsis>
+</sect2>
+
 <sect2 id="dbus-save">
 <title>Speichere alle veränderten Dateien</title>
 <funcsynopsis>
@@ -4593,6 +4603,7 @@ die dortige Beschreibung verwiesen.
 
 <programlisting>
 app.openDirectory(path): Verzeichnis öffnen
+app.unloadAllTags(): Entlade alle Tags
 app.saveDirectory(): Speichern
 app.revertFileModifications(): Zuletzt gespeicherte Fassung
 app.importTags(tag, path, fmtIdx): Datei importieren

doc/en/index.docbook

@@ -3406,6 +3406,16 @@ following methods:
 <para>Returns true if OK.</para>
 </sect2>
 
+<sect2 id="dbus-unloadAllTags">
+<title>Unload the tags of all files which are not modified or selected</title>
+<funcsynopsis>
+<funcprototype>
+  <funcdef><function>unloadAllTags</function></funcdef>
+  <void/>
+</funcprototype>
+</funcsynopsis>
+</sect2>
+
 <sect2 id="dbus-save">
 <title>Save all modified files</title>
 <funcsynopsis>
@@ -4394,6 +4404,7 @@ details, refer to the respective notes.
 
 <programlisting>
 app.openDirectory(path): Open directory
+app.unloadAllTags(): Unload all tags
 app.saveDirectory(): Save directory
 app.revertFileModifications(): Revert
 app.importTags(tag, path, fmtIdx): Import file

po/cs.po

@@ -302,6 +302,9 @@ msgstr "O&bnovit"
 msgid "Reload directory"
 msgstr "Obnovit adresář"
 
+msgid "Unload"
+msgstr "Uvolnit"
+
 msgid "&Import..."
 msgstr "&Zavést..."
 

po/da.po

@@ -297,6 +297,9 @@ msgstr "Ge&nindlæs"
 msgid "Reload directory"
 msgstr "Genindlæs liste"
 
+msgid "Unload"
+msgstr "Fjern"
+
 msgid "&Import..."
 msgstr "&Importér..."
 

po/de.po

@@ -302,6 +302,9 @@ msgstr "&Neu laden"
 msgid "Reload directory"
 msgstr "Verzeichnis neu einlesen"
 
+msgid "Unload"
+msgstr "Entladen"
+
 msgid "&Import..."
 msgstr "&Importieren..."
 

po/es.po

@@ -302,6 +302,9 @@ msgstr "Recar&gar"
 msgid "Reload directory"
 msgstr "Recargar directorio"
 
+msgid "Unload"
+msgstr "Descargar"
+
 msgid "&Import..."
 msgstr "&Importar..."
 

po/et.po

@@ -303,6 +303,9 @@ msgstr "Laadi &uuesti"
 msgid "Reload directory"
 msgstr "Uuendada käesoleva kausta sisu"
 
+msgid "Unload"
+msgstr "Eemalda"
+
 msgid "&Import..."
 msgstr "&Impordi..."
 

po/fi.po

@@ -303,6 +303,9 @@ msgstr "Lataa uu&delleen"
 msgid "Reload directory"
 msgstr "Lataa nykyinen kansio uudelleen"
 
+msgid "Unload"
+msgstr "Poista"
+
 msgid "&Import..."
 msgstr "T&uo..."
 

po/fr.po

@@ -302,6 +302,9 @@ msgstr "Rechar&ger"
 msgid "Reload directory"
 msgstr "Recharger le répertoire"
 
+msgid "Unload"
+msgstr "Décharger"
+
 msgid "&Import..."
 msgstr "&Importer..."
 

po/it.po

@@ -302,6 +302,9 @@ msgstr "&Ricarica"
 msgid "Reload directory"
 msgstr "Ricarica cartella"
 
+msgid "Unload"
+msgstr "Scarica"
+
 msgid "&Import..."
 msgstr "&Importa..."
 

po/kid3.pot

@@ -299,6 +299,9 @@ msgstr ""
 msgid "Reload directory"
 msgstr ""
 
+msgid "Unload"
+msgstr ""
+
 msgid "&Import..."
 msgstr ""
 

po/nl.po

@@ -302,6 +302,9 @@ msgstr "Her&laden"
 msgid "Reload directory"
 msgstr "Map herladen"
 
+msgid "Unload"
+msgstr "Ontladen"
+
 msgid "&Import..."
 msgstr "&Importeren..."
 

po/pl.po

@@ -303,6 +303,9 @@ msgstr "O&dśwież"
 msgid "Reload directory"
 msgstr "Ponownie wczytaj katalog"
 
+msgid "Unload"
+msgstr "Wyłącz"
+
 msgid "&Import..."
 msgstr "&Importuj..."
 

po/ru.po

@@ -303,6 +303,9 @@ msgstr "О&бновить"
 msgid "Reload directory"
 msgstr "Обновить каталог"
 
+msgid "Unload"
+msgstr "Выгрузить"
+
 msgid "&Import..."
 msgstr "&Импорт..."
 

po/sr.po

@@ -301,6 +301,9 @@ msgstr "&Освежи"
 msgid "Reload directory"
 msgstr "Поново учитај списак"
 
+msgid "Unload"
+msgstr "Унлоад"
+
 msgid "&Import..."
 msgstr "&Увези..."
 

po/sr@ijekavian.po

@@ -301,6 +301,9 @@ msgstr "&Учитај поново"
 msgid "Reload directory"
 msgstr "Поново учитај списак"
 
+msgid "Unload"
+msgstr "Унлоад"
+
 msgid "&Import..."
 msgstr "&Увези..."
 

po/sr@ijekavianlatin.po

@@ -301,6 +301,9 @@ msgstr "&Učitaj ponovo"
 msgid "Reload directory"
 msgstr "Ponovo učitaj spisak"
 
+msgid "Unload"
+msgstr "Unload"
+
 msgid "&Import..."
 msgstr "&Uvezi..."
 

po/sr@latin.po

@@ -301,6 +301,9 @@ msgstr "&Učitaj ponovo"
 msgid "Reload directory"
 msgstr "Ponovo učitaj spisak"
 
+msgid "Unload"
+msgstr "Unload"
+
 msgid "&Import..."
 msgstr "&Uvezi..."
 

po/tr.po

@@ -302,6 +302,9 @@ msgstr "Y&eniden Yükle"
 msgid "Reload directory"
 msgstr "Geçerli dizini yenile"
 
+msgid "Unload"
+msgstr "Kaldır"
+
 msgid "&Import..."
 msgstr "A&l..."
 

po/zh_CN.po

@@ -301,6 +301,9 @@ msgstr "重新装入(&L)"
 msgid "Reload directory"
 msgstr "重载当前文件夹"
 
+msgid "Unload"
+msgstr "卸载"
+
 msgid "&Import..."
 msgstr "导入(&I)..."
 

po/zh_TW.po

@@ -305,6 +305,9 @@ msgstr "重新載入(&L)"
 msgid "Reload directory"
 msgstr "重新載入目錄"
 
+msgid "Unload"
+msgstr "卸載"
+
 msgid "&Import..."
 msgstr "匯入(&I)..."
 

src/app/kde/kdemainwindow.cpp

@@ -193,6 +193,10 @@ void KdeMainWindow::initActions()
   connect(action, &QAction::triggered,
           impl(), &BaseMainWindowImpl::slotFileReload);
 
+  action = new QAction(tr("Unload"), this);
+  collection->addAction(QLatin1String("unload"), action);
+  connect(action, &QAction::triggered, app(), &Kid3Application::unloadAllTags);
+
   action = new QAction(QIcon::fromTheme(QLatin1String("document-import")),
                        tr("&Import..."), this);
   action->setStatusTip(tr("Import from file or clipboard"));

src/app/qt/kid3mainwindow.cpp

@@ -154,6 +154,15 @@ void Kid3MainWindow::initActions()
   connect(fileReload, &QAction::triggered,
     impl(), &BaseMainWindowImpl::slotFileReload);
   fileMenu->addAction(fileReload);
+
+  auto fileUnload = new QAction(this);
+  fileUnload->setText(tr("Unload"));
+  fileUnload->setObjectName(QLatin1String("unload"));
+  m_shortcutsModel->registerAction(fileUnload, menuTitle);
+  connect(fileUnload, &QAction::triggered,
+          app(), &Kid3Application::unloadAllTags);
+  addAction(fileUnload);
+
   fileMenu->addSeparator();
 
   auto fileSave = new QAction(this);

src/core/model/kid3application.cpp

@@ -853,6 +853,24 @@ void Kid3Application::onDirectoryLoaded()
   onDirectoryOpened();
 }
 
+/**
+ * Unload all tags.
+ * The tags of all files which are not modified or selected are freed to
+ * reclaim their memory.
+ */
+void Kid3Application::unloadAllTags()
+{
+  TaggedFileIterator it(m_fileProxyModelRootIndex);
+  while (it.hasNext()) {
+    TaggedFile* taggedFile = it.next();
+    if (taggedFile->isTagInformationRead() && !taggedFile->isChanged() &&
+        !m_fileSelectionModel->isSelected(taggedFile->getIndex())) {
+      taggedFile->clearTags(false);
+      taggedFile->closeFileHandle();
+    }
+  }
+}
+
 /**
  * Get directory path of opened directory.
  * @return directory path.

src/core/model/kid3application.h

@@ -912,6 +912,13 @@ public slots:
    */
   void openDropUrls(const QList<QUrl>& urlList);
 
+  /**
+   * Unload all tags.
+   * The tags of all files which are not modified or selected are freed to
+   * reclaim their memory.
+   */
+  void unloadAllTags();
+
   /**
    * Revert file modifications.
    * Acts on selected files or all files if no file is selected.

src/core/model/net.sourceforge.Kid3.xml

@@ -5,6 +5,8 @@
       <arg type="b" direction="out"/>
       <arg name="path" type="s" direction="in"/>
     </method>
+    <method name="unloadAllTags">
+    </method>
     <method name="save">
       <arg type="b" direction="out"/>
     </method>
@@ -19,6 +21,11 @@
       <arg name="path" type="s" direction="in"/>
       <arg name="fmtIdx" type="i" direction="in"/>
     </method>
+    <method name="importFromTags">
+      <arg name="tagMask" type="i" direction="in"/>
+      <arg name="source" type="s" direction="in"/>
+      <arg name="extraction" type="s" direction="in"/>
+    </method>
     <method name="batchImport">
       <arg type="b" direction="out"/>
       <arg name="tagMask" type="i" direction="in"/>
@@ -37,6 +44,15 @@
     <method name="createPlaylist">
       <arg type="b" direction="out"/>
     </method>
+    <method name="getPlaylistItems">
+      <arg type="as" direction="out"/>
+      <arg name="path" type="s" direction="in"/>
+    </method>
+    <method name="setPlaylistItems">
+      <arg type="b" direction="out"/>
+      <arg name="path" type="s" direction="in"/>
+      <arg name="items" type="as" direction="in"/>
+    </method>
     <method name="quit">
     </method>
     <method name="selectAll">

src/core/model/scriptinterface.cpp

@@ -66,6 +66,16 @@ bool ScriptInterface::openDirectory(const QString& path)
   return m_app->openDirectory({path}, true);
 }
 
+/**
+ * Unload all tags.
+ * The tags of all files which are not modified or selected are freed to
+ * reclaim their memory.
+ */
+void ScriptInterface::unloadAllTags()
+{
+  m_app->unloadAllTags();
+}
+
 /**
  * Save all modified files.
  *

src/core/model/scriptinterface.h

@@ -66,6 +66,13 @@ public slots:
    */
   bool openDirectory(const QString& path);
 
+  /**
+   * Unload all tags.
+   * The tags of all files which are not modified or selected are freed to
+   * reclaim their memory.
+   */
+  void unloadAllTags();
+
   /**
    * Save all modified files.
    *