added bulk editor actions

Author: AlmasB

fxgl-tools/src/main/kotlin/com/almasb/fxgl/tools/dialogues/DialoguePane.kt

@@ -147,6 +147,15 @@ class DialoguePane(graph: DialogueGraph = DialogueGraph()) : Pane() {
 
         mouseGestures.makeDraggable(selectionRect) {
             selectionStart = Point2D(selectionRect.layoutX, selectionRect.layoutY)
+
+            performUIAction(BulkAction(
+                    selectedNodeViews.map {
+                        val layoutX = it.properties["startLayoutX"] as Double
+                        val layoutY = it.properties["startLayoutY"] as Double
+
+                        MoveNodeAction(it.node, this::getNodeView, layoutX, layoutY, it.layoutX, it.layoutY)
+                    }
+            ))
         }
 
         selectionRect.layoutXProperty().addListener { _, prevX, layoutX ->
@@ -218,6 +227,11 @@ class DialoguePane(graph: DialogueGraph = DialogueGraph()) : Pane() {
             isSelectingRectangle = false
             selectedNodeViews.addAll(selectionRect.getSelectedNodesIn(nodeViews, NodeView::class.java))
 
+            selectedNodeViews.forEach {
+                it.properties["startLayoutX"] = it.layoutX
+                it.properties["startLayoutY"] = it.layoutY
+            }
+
             if (selectedNodeViews.isEmpty()) {
                 selectionRect.isVisible = false
             }

fxgl-tools/src/main/kotlin/com/almasb/fxgl/tools/dialogues/EditorActions.kt

@@ -28,8 +28,22 @@ interface EditorAction {
 // * remove node (and its incident edges)
 // * add edge
 // * remove edge
+// * bulk action
 // * TODO: node text editing
 
+class BulkAction(
+        private val actions: List<EditorAction>
+) : EditorAction {
+
+    override fun run() {
+        actions.forEach { it.run() }
+    }
+
+    override fun undo() {
+        actions.forEach { it.undo() }
+    }
+}
+
 class MoveNodeAction(
         private val node: DialogueNode,
         private val newNodeViewGetter: (DialogueNode) -> NodeView,