#52 migrate java toolbar to kotlin (#58)

Co-authored-by: Dan Timofte <dantimofte@proton.me>

src/main/kotlin/ac/quant/quickfixspec/toolbar/QuickfixFloatingToolbar.kt

@@ -0,0 +1,40 @@
+package ac.quant.quickfixspec.toolbar
+
+import com.intellij.openapi.Disposable
+import com.intellij.openapi.actionSystem.DataContext
+import com.intellij.openapi.actionSystem.PlatformDataKeys
+import com.intellij.openapi.editor.toolbar.floating.AbstractFloatingToolbarProvider
+import com.intellij.openapi.editor.toolbar.floating.FloatingToolbarComponent
+import com.intellij.openapi.fileEditor.FileEditor
+import com.intellij.openapi.project.Project
+import java.awt.FlowLayout
+import javax.swing.JLabel
+import javax.swing.JPanel
+
+class QuickfixFloatingToolbar : AbstractFloatingToolbarProvider("Fix.Floating"), Disposable {
+
+    override fun register(dataContext: DataContext, component: FloatingToolbarComponent, parentDisposable: Disposable) {
+
+        val fileEditor = dataContext.getData<FileEditor?>(PlatformDataKeys.FILE_EDITOR)
+        if (fileEditor == null || fileEditor.getFile() == null) {
+            return
+        }
+        val project = dataContext.getData<Project?>(PlatformDataKeys.PROJECT)
+        if (project == null) {
+            return
+        }
+        // Create a new toolbar panel
+        val panel = JPanel(FlowLayout(FlowLayout.LEFT))
+        panel.add(JLabel("Quickfix Toolbar"))
+
+        // Set the toolbar component to the panel
+        component.scheduleShow()
+    }
+
+    override val autoHideable: Boolean
+        get() = false
+
+    override fun dispose() {
+    }
+}
+