Fix do drag-and-drop para ordenar lista

src/main/java/us/guihouse/projector/forms/controllers/WorkspaceController.java

@@ -33,7 +33,7 @@
 import javafx.scene.layout.Pane;
 import javafx.stage.Stage;
 import javafx.util.Callback;
-import us.guihouse.projector.other.ListCellX;
+import us.guihouse.projector.other.DragSortListCell;
 import us.guihouse.projector.other.YouTubeVideoResolve;
 import us.guihouse.projector.projection.TextWrapperFactoryChangeListener;
 import us.guihouse.projector.projection.text.TextWrapper;
@@ -184,19 +184,17 @@ private void initializeProjectionList() {
             @Override
             public ListCell<ProjectionItemSubScene> call(ListView<ProjectionItemSubScene> arg0) {
                 //My cell is on my way to call
-                ListCellX<ProjectionItemSubScene> cell = new ListCellX<ProjectionItemSubScene>() {
+                DragSortListCell<ProjectionItemSubScene> cell = new DragSortListCell<ProjectionItemSubScene>() {
                     @Override
                     public void updateItem(ProjectionItemSubScene item, boolean empty) {
                         super.updateItem(item, empty);
+
                         if (item != null) {
                             //finally every thing is just setup
                             setText(item.getTitle());
                         }
                     }
                 };
-                //this is my chemical solution
-                //Need to call on every cell for making things work
-                cell.init(projectionListView.getItems());
 
                 //Take my cell
                 return cell;

src/main/java/us/guihouse/projector/other/DragSortListCell.java

@@ -0,0 +1,97 @@
+/*
+ * Taked from https://gist.github.com/jewelsea/7821196
+ */
+package us.guihouse.projector.other;
+
+import java.util.ArrayList;
+import java.util.List;
+import javafx.collections.ObservableList;
+import javafx.scene.control.ListCell;
+import javafx.scene.input.ClipboardContent;
+import javafx.scene.input.DragEvent;
+import javafx.scene.input.Dragboard;
+import javafx.scene.input.TransferMode;
+
+
+public class DragSortListCell<X extends Identifiable> extends ListCell<X> {
+
+    public DragSortListCell() {
+        ListCell thisCell = this;
+
+        setOnDragDetected(event -> {
+            if (getItem() == null) {
+                return;
+            }
+
+            Dragboard dragboard = startDragAndDrop(TransferMode.MOVE);
+            ClipboardContent content = new ClipboardContent();
+            content.putString(getItem().getIdentity());
+
+            dragboard.setDragView(DragSortListCell.this.snapshot(null, null));
+            dragboard.setContent(content);
+
+            event.consume();
+        });
+
+        setOnDragOver(event -> {
+            if (event.getGestureSource() != thisCell &&
+                   event.getDragboard().hasString()) {
+                event.acceptTransferModes(TransferMode.MOVE);
+            }
+
+            event.consume();
+        });
+
+        setOnDragEntered(event -> {
+            if (event.getGestureSource() != thisCell &&
+                    event.getDragboard().hasString()) {
+                setOpacity(0.3);
+            }
+        });
+
+        setOnDragExited(event -> {
+            if (event.getGestureSource() != thisCell &&
+                    event.getDragboard().hasString()) {
+                setOpacity(1);
+            }
+        });
+
+        setOnDragDropped(event -> {
+            if (getItem() == null) {
+                return;
+            }
+
+            Dragboard db = event.getDragboard();
+            boolean success = false;
+
+            if (db.hasString()) {
+                ObservableList<X> items = getListView().getItems();
+                X item = findItemByIdentity(db.getString());
+                int draggedIdx = items.indexOf(item);
+                int thisIdx = items.indexOf(getItem());
+
+                items.set(draggedIdx, getItem());
+                items.set(thisIdx, item);
+
+                List<X> itemscopy = new ArrayList<>(getListView().getItems());
+                getListView().getItems().setAll(itemscopy);
+
+                success = true;
+            }
+            event.setDropCompleted(success);
+
+            event.consume();
+        });
+
+        setOnDragDone(DragEvent::consume);
+    }
+
+    private X findItemByIdentity(String id) {
+        return getListView()
+                .getItems()
+                .stream()
+                .filter(i -> i.getIdentity().equals(id))
+                .findAny()
+                .get();
+    }
+}

src/main/java/us/guihouse/projector/other/Identifiable.java

@@ -0,0 +1,14 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package us.guihouse.projector.other;
+
+/**
+ *
+ * @author guilherme
+ */
+public interface Identifiable {
+    public String getIdentity();
+}

src/main/java/us/guihouse/projector/scenes/ProjectionItemSubScene.java

@@ -5,25 +5,29 @@
  */
 package us.guihouse.projector.scenes;
 
+import java.util.UUID;
 import javafx.scene.Parent;
 import javafx.scene.SubScene;
 import us.guihouse.projector.forms.controllers.ControllerObserver;
 import us.guihouse.projector.forms.controllers.ProjectionController;
+import us.guihouse.projector.other.Identifiable;
 import us.guihouse.projector.projection.ProjectionManager;
 
 /**
  *
  * @author guilherme
  */
-public abstract class ProjectionItemSubScene extends SubScene implements ControllerObserver {
+public abstract class ProjectionItemSubScene extends SubScene implements ControllerObserver, Identifiable {
 
+    private final String identity;
     private ProjectionController controller;
     private SceneObserver observer;
     private String title;
 
     protected ProjectionItemSubScene(Parent root, String title, double width, double height) {
         super(root, width, height);
         this.title = title;
+        this.identity = UUID.randomUUID().toString();
     }
 
     public SceneObserver getObserver() {
@@ -69,4 +73,9 @@ public void onEscapeKeyPressed() {
             controller.onEscapeKeyPressed();
         }
     }
+
+    @Override
+    public String getIdentity() {
+        return identity;
+    }
 }