#5 fixed

build.gradle

@@ -25,6 +25,7 @@ patchPluginXml {
 <ul>  
    <li>0.7.0
    <ul>
+    <li><a href="https://github.com/ehmkah/imgdiff/issues/24">issue/24</a> (bugfix: fixed memory leak)</li>
     <li><a href="https://github.com/ehmkah/imgdiff/issues/22">issue/22</a> (technical: upgrade used kotlin and intellij gradle-plugin)</li>
    </ul>
    </li> 

src/main/kotlin/de/ehmkah/projects/imgdiff/ImdDiffDialogWrapper.kt

@@ -5,7 +5,6 @@ import com.intellij.openapi.ui.DialogWrapper
 import org.intellij.images.editor.impl.ImageEditorManagerImpl
 import java.awt.BorderLayout
 import java.awt.image.BufferedImage
-import java.util.*
 import javax.swing.JComponent
 import javax.swing.JPanel
 
@@ -17,28 +16,25 @@ import javax.swing.JPanel
  */
 class ImdDiffDialogWrapper(val bufferedImage: BufferedImage) : DialogWrapper(true) {
 
-    val result = LinkedList<JPanel>()
+    lateinit var editorForCleanup: Disposable
 
     init {
         init()
         title = "ImgDiff"
     }
 
     override fun createCenterPanel(): JComponent? {
-        result.add(JPanel(BorderLayout()))
+        val result = JPanel(BorderLayout())
         val jPanel = ImageEditorManagerImpl.createImageEditorUI(bufferedImage)
-        result.get(0).add(jPanel, BorderLayout.CENTER)
-        return result.get(0)
+        editorForCleanup = jPanel
+        result.add(jPanel, BorderLayout.CENTER)
+
+        return result
     }
 
-    // ImageEditorUI
     override fun dispose() {
         super.dispose()
-        val component = result.get(0).getComponent(0)
-        if (component is Disposable) {
-            component.dispose();
-        }
-        result.get(0).removeAll()
+        editorForCleanup.dispose()
     }
 }