Convert ViewModelFactory.java into kotlin

core/src/main/java/org/kiwix/kiwixmobile/core/ViewModelFactory.java

@@ -1,57 +0,0 @@
-/*
- * Kiwix Android
- * Copyright (c) 2019 Kiwix <android.kiwix.org>
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
- */
-
-package org.kiwix.kiwixmobile.core;
-
-import androidx.lifecycle.ViewModel;
-import androidx.lifecycle.ViewModelProvider;
-import java.util.Map;
-import javax.inject.Inject;
-import javax.inject.Provider;
-
-public class ViewModelFactory implements ViewModelProvider.Factory {
-  private final Map<Class<? extends ViewModel>, Provider<ViewModel>> creators;
-
-  @Inject
-  public ViewModelFactory(
-    Map<Class<? extends ViewModel>, Provider<ViewModel>> creators) {
-    this.creators = creators;
-  }
-
-  @SuppressWarnings("unchecked")
-  @Override
-  public <T extends ViewModel> T create(Class<T> modelClass) {
-    Provider<? extends ViewModel> creator = creators.get(modelClass);
-    if (creator == null) {
-      for (Map.Entry<Class<? extends ViewModel>, Provider<ViewModel>> entry : creators.entrySet()) {
-        if (modelClass.isAssignableFrom(entry.getKey())) {
-          creator = entry.getValue();
-          break;
-        }
-      }
-    }
-    if (creator == null) {
-      throw new IllegalArgumentException("unknown model class " + modelClass);
-    }
-    try {
-      return (T) creator.get();
-    } catch (Exception e) {
-      throw new RuntimeException(e);
-    }
-  }
-}

core/src/main/java/org/kiwix/kiwixmobile/core/ViewModelFactory.kt

@@ -0,0 +1,48 @@
+/*
+ * Kiwix Android
+ * Copyright (c) 2022 Kiwix <android.kiwix.org>
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+package org.kiwix.kiwixmobile.core
+
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.ViewModelProvider
+import javax.inject.Inject
+import javax.inject.Provider
+
+open class ViewModelFactory @Inject constructor(
+  private val creators: Map<Class<out ViewModel>, @JvmSuppressWildcards Provider<ViewModel>>
+) : ViewModelProvider.Factory {
+
+  @Suppress("TooGenericExceptionCaught", "TooGenericExceptionThrown")
+  override fun <T : ViewModel?> create(modelClass: Class<T>): T {
+    var creator: Provider<out ViewModel?>? = creators[modelClass]
+    if (creator == null) {
+      for ((key, value) in creators) {
+        if (modelClass.isAssignableFrom(key)) {
+          creator = value
+          break
+        }
+      }
+    }
+    requireNotNull(creator) { "unknown model class $modelClass" }
+    return try {
+      creator.get() as T
+    } catch (e: Exception) {
+      throw RuntimeException(e)
+    }
+  }
+}