converting to kotlion

Author: mallowigi

.editorconfig

@@ -0,0 +1,12 @@
+# EditorConfig is awesome: https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8
+indent_style = space
+indent_size = 4
+trim_trailing_whitespace = true

src/main/java/com/mallowigi/imageicon/ImageConverterFactory.kt

@@ -21,33 +21,28 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
+package com.mallowigi.imageicon
 
-package com.mallowigi.imageicon;
+import com.google.common.collect.Sets
+import com.mallowigi.imageicon.converters.ExtendedImageConverter
+import com.mallowigi.imageicon.converters.ImageToIconConverter
+import com.mallowigi.imageicon.converters.RegularImageConverter
+import com.mallowigi.imageicon.converters.SVGImageConverter
+import java.util.*
 
-import com.google.common.collect.Sets;
-import com.mallowigi.imageicon.converters.ExtendedImageConverter;
-import com.mallowigi.imageicon.converters.ImageToIconConverter;
-import com.mallowigi.imageicon.converters.RegularImageConverter;
-import com.mallowigi.imageicon.converters.SVGImageConverter;
-
-import java.util.Collections;
-import java.util.Optional;
-import java.util.Set;
-
-enum ImageConverterFactory {
-  ;
-  private static final Set<ImageToIconConverter> CONVERTERS = Collections.unmodifiableSet(
-    Sets.newHashSet(
-      new RegularImageConverter(),
-      new SVGImageConverter(),
-      new ExtendedImageConverter()
+object ImageConverterFactory {
+    private val CONVERTERS = Collections.unmodifiableSet(
+        Sets.newHashSet(
+            RegularImageConverter(),
+            SVGImageConverter(),
+            ExtendedImageConverter()
+        )
     )
-  );
 
-  static ImageToIconConverter create(final String fileName) {
-    final Optional<ImageToIconConverter> first = CONVERTERS.stream()
-      .filter(converter -> converter.isAccepted(fileName))
-      .findFirst();
-    return first.orElse(null);
-  }
+    fun create(fileName: String?): ImageToIconConverter? {
+        val first = CONVERTERS.stream()
+            .filter { converter: ImageToIconConverter? -> converter!!.isAccepted(fileName) }
+            .findFirst()
+        return first.orElse(null)
+    }
 }

src/main/java/com/mallowigi/imageicon/ImageIconProvider.kt

@@ -21,57 +21,43 @@
  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  * SOFTWARE.
  */
-
-package com.mallowigi.imageicon;
-
-import com.intellij.ide.IconProvider;
-import com.intellij.openapi.diagnostic.Logger;
-import com.intellij.openapi.project.DumbAware;
-import com.intellij.openapi.vfs.VirtualFile;
-import com.intellij.psi.PsiElement;
-import com.intellij.psi.PsiFile;
-import com.intellij.psi.PsiFileSystemItem;
-import com.mallowigi.imageicon.converters.ImageToIconConverter;
-import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
-
-import javax.swing.*;
-import java.io.IOException;
-import java.util.Objects;
-
-public class ImageIconProvider extends IconProvider implements DumbAware {
-  private static final Logger LOG = Logger.getInstance(ImageIconProvider.class);
-
-  @SuppressWarnings({"OverlyComplexBooleanExpression",
-                      "HardCodedStringLiteral",
-                      "MethodWithMoreThanThreeNegations"})
-  private static boolean isValidImagePath(final PsiFileSystemItem containingFile) {
-    return containingFile != null &&
-      containingFile.getVirtualFile() != null &&
-      containingFile.getVirtualFile().getCanonicalFile() != null &&
-      containingFile.getVirtualFile().getCanonicalFile().getCanonicalPath() != null &&
-      !containingFile.getVirtualFile().getCanonicalFile().getCanonicalPath().contains(".jar");
-  }
-
-  @Nullable
-  @Override
-  public final Icon getIcon(@NotNull final PsiElement element, final int flags) {
-    final PsiFile containingFile = element.getContainingFile();
-
-    if (isValidImagePath(containingFile)) {
-      final VirtualFile canonicalFile = Objects.requireNonNull(containingFile.getVirtualFile().getCanonicalFile());
-      final String fileName = containingFile.getName();
-      final ImageToIconConverter converter = ImageConverterFactory.create(fileName);
-
-      if (converter != null) {
-        try {
-          return converter.convert(canonicalFile, canonicalFile.getCanonicalPath());
+package com.mallowigi.imageicon
+
+import com.intellij.ide.IconProvider
+import com.intellij.openapi.diagnostic.Logger
+import com.intellij.openapi.project.DumbAware
+import com.intellij.psi.PsiElement
+import com.intellij.psi.PsiFileSystemItem
+import java.io.IOException
+import java.util.*
+import javax.swing.Icon
+
+class ImageIconProvider : IconProvider(), DumbAware {
+    override fun getIcon(element: PsiElement, flags: Int): Icon? {
+        val containingFile = element.containingFile
+        if (isValidImagePath(containingFile)) {
+            val canonicalFile = Objects.requireNonNull(containingFile.virtualFile.canonicalFile)!!
+            val fileName = containingFile.name
+            val converter = ImageConverterFactory.create(fileName)
+            if (converter != null) {
+                try {
+                    return converter.convert(canonicalFile, canonicalFile.canonicalPath)
+                } catch (e: IOException) {
+                    LOG.warn(e.message)
+                }
+            }
         }
-        catch (final IOException e) {
-          LOG.warn(e.getMessage());
+        return null
+    }
+
+    companion object {
+        private val LOG = Logger.getInstance(ImageIconProvider::class.java)
+        private fun isValidImagePath(containingFile: PsiFileSystemItem?): Boolean {
+            return containingFile != null &&
+                containingFile.virtualFile != null &&
+                containingFile.virtualFile.canonicalFile != null &&
+                containingFile.virtualFile.canonicalFile!!.canonicalPath != null &&
+                !containingFile.virtualFile.canonicalFile!!.canonicalPath!!.contains(".jar")
         }
-      }
     }
-    return null;
-  }
-}
+}