Prepare DragAndDrop for commonization

compose/ui/ui/api/desktop/ui.api

@@ -3286,6 +3286,7 @@ public abstract interface class androidx/compose/ui/platform/PlatformContext {
 	public fun convertLocalToWindowPosition-MK-Hz9U (J)J
 	public fun convertScreenToLocalPosition-MK-Hz9U (J)J
 	public fun convertWindowToLocalPosition-MK-Hz9U (J)J
+	public fun getDragAndDropManager ()Landroidx/compose/ui/platform/PlatformDragAndDropManager;
 	public abstract fun getInputModeManager ()Landroidx/compose/ui/input/InputModeManager;
 	public fun getMeasureDrawLayerBounds ()Z
 	public fun getParentFocusManager ()Landroidx/compose/ui/focus/FocusManager;
@@ -3298,7 +3299,6 @@ public abstract interface class androidx/compose/ui/platform/PlatformContext {
 	public fun isWindowTransparent ()Z
 	public fun requestFocus ()Z
 	public fun setPointerIcon (Landroidx/compose/ui/input/pointer/PointerIcon;)V
-	public fun startDrag-12SF9DM (Landroidx/compose/ui/draganddrop/DragAndDropTransferData;JLkotlin/jvm/functions/Function1;)Z
 }
 
 public final class androidx/compose/ui/platform/PlatformContext$Companion {
@@ -3317,6 +3317,24 @@ public abstract interface class androidx/compose/ui/platform/PlatformContext$Sem
 	public abstract fun onSemanticsOwnerRemoved (Landroidx/compose/ui/semantics/SemanticsOwner;)V
 }
 
+public abstract interface class androidx/compose/ui/platform/PlatformDragAndDropManager {
+	public fun isRequestDragAndDropTransferSupported ()Z
+	public fun requestDragAndDropTransfer-Uv8p0NA (Landroidx/compose/ui/platform/PlatformDragAndDropSource;J)V
+}
+
+public abstract interface class androidx/compose/ui/platform/PlatformDragAndDropSource {
+	public abstract fun startDragAndDropTransfer-d-4ec7I (Landroidx/compose/ui/platform/PlatformDragAndDropSource$StartTransferScope;JLkotlin/jvm/functions/Function0;)V
+}
+
+public abstract interface class androidx/compose/ui/platform/PlatformDragAndDropSource$StartTransferScope {
+	public abstract fun startDragAndDropTransfer-12SF9DM (Landroidx/compose/ui/draganddrop/DragAndDropTransferData;JLkotlin/jvm/functions/Function1;)Z
+}
+
+public abstract interface class androidx/compose/ui/platform/PlatformDragAndDropTarget : androidx/compose/ui/draganddrop/DragAndDropTarget {
+	public abstract fun acceptDragAndDropTransfer (Landroidx/compose/ui/draganddrop/DragAndDropEvent;)Z
+	public abstract fun getHasEligibleDropTarget ()Z
+}
+
 public final class androidx/compose/ui/platform/PlatformInsets {
 	public static final field $stable I
 	public static final field Companion Landroidx/compose/ui/platform/PlatformInsets$Companion;
@@ -3515,7 +3533,7 @@ public abstract interface class androidx/compose/ui/scene/ComposeScene {
 	public abstract fun createLayer (Landroidx/compose/ui/unit/Density;Landroidx/compose/ui/unit/LayoutDirection;ZLandroidx/compose/runtime/CompositionContext;)Landroidx/compose/ui/scene/ComposeSceneLayer;
 	public abstract fun getCompositionLocalContext ()Landroidx/compose/runtime/CompositionLocalContext;
 	public abstract fun getDensity ()Landroidx/compose/ui/unit/Density;
-	public abstract fun getDropTarget ()Landroidx/compose/ui/scene/ComposeSceneDropTarget;
+	public abstract fun getDragAndDropTarget ()Landroidx/compose/ui/scene/ComposeSceneDragAndDropTarget;
 	public abstract fun getFocusManager ()Landroidx/compose/ui/scene/ComposeSceneFocusManager;
 	public abstract fun getLayoutDirection ()Landroidx/compose/ui/unit/LayoutDirection;
 	public abstract fun getSize-bOM6tXw ()Landroidx/compose/ui/unit/IntSize;
@@ -3545,13 +3563,17 @@ public final class androidx/compose/ui/scene/ComposeSceneContext$Companion {
 	public final fun getEmpty ()Landroidx/compose/ui/scene/ComposeSceneContext;
 }
 
-public final class androidx/compose/ui/scene/ComposeSceneDropTarget {
+public final class androidx/compose/ui/scene/ComposeSceneDragAndDropTarget : androidx/compose/ui/draganddrop/DragAndDropTarget {
 	public static final field $stable I
-	public final fun onChanged (Landroidx/compose/ui/draganddrop/DragAndDropEvent;)V
-	public final fun onDrop (Landroidx/compose/ui/draganddrop/DragAndDropEvent;)Z
-	public final fun onEntered (Landroidx/compose/ui/draganddrop/DragAndDropEvent;)Z
-	public final fun onExited (Landroidx/compose/ui/draganddrop/DragAndDropEvent;)V
-	public final fun onMoved (Landroidx/compose/ui/draganddrop/DragAndDropEvent;)V
+	public final fun acceptDragAndDropTransfer (Landroidx/compose/ui/draganddrop/DragAndDropEvent;)Z
+	public final fun getHasEligibleDropTarget ()Z
+	public fun onChanged (Landroidx/compose/ui/draganddrop/DragAndDropEvent;)V
+	public fun onDrop (Landroidx/compose/ui/draganddrop/DragAndDropEvent;)Z
+	public fun onEnded (Landroidx/compose/ui/draganddrop/DragAndDropEvent;)V
+	public fun onEntered (Landroidx/compose/ui/draganddrop/DragAndDropEvent;)V
+	public fun onExited (Landroidx/compose/ui/draganddrop/DragAndDropEvent;)V
+	public fun onMoved (Landroidx/compose/ui/draganddrop/DragAndDropEvent;)V
+	public fun onStarted (Landroidx/compose/ui/draganddrop/DragAndDropEvent;)V
 }
 
 public final class androidx/compose/ui/scene/ComposeSceneFocusManager {

compose/ui/ui/src/commonMain/kotlin/androidx/compose/ui/draganddrop/DragAndDropManager.kt

@@ -16,49 +16,27 @@
 
 package androidx.compose.ui.draganddrop
 
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.geometry.Size
-import androidx.compose.ui.graphics.drawscope.DrawScope
+import androidx.compose.ui.geometry.Offset
 
 internal interface DragAndDropManager {
 
     /**
-     * A [Modifier] that can be added to the [Owners][androidx.compose.ui.node.Owner] modifier
-     * list that contains the modifiers required by drag and drop.
-     * (Eg, a root drag and drop modifier).
+     * Returns a boolean value indicating whether requesting drag and drop transfer is supported. If
+     * it's not, the transfer might be initiated only be system and calling
+     * [requestDragAndDropTransfer] will throw an error.
      */
-    val modifier: Modifier
+    val isRequestDragAndDropTransferSupported: Boolean
+        get() = false
 
     /**
-     * Initiates a drag-and-drop operation for transferring data.
-     *
-     * @param transferData the data to be transferred after successful completion of the
-     * drag and drop gesture.
-     *
-     * @param decorationSize the size of the drag decoration to be drawn.
-     *
-     * @param drawDragDecoration provides the visual representation of the item dragged during the
-     * drag and drop gesture.
-     *
-     * @return true if the method completes successfully, or false if it fails anywhere.
-     * Returning false means the system was unable to do a drag because of another
-     * ongoing operation or some other reasons.
+     * Requests a drag and drop transfer. It might throw [UnsupportedOperationException] in case if
+     * the operation is not supported. [isRequestDragAndDropTransferSupported] can be used to check
+     * if it might be performed.
      */
-    fun drag(
-        transferData: DragAndDropTransferData,
-        decorationSize: Size,
-        drawDragDecoration: DrawScope.() -> Unit,
-    ): Boolean
-
-    /**
-     * Called to notify this [DragAndDropManager] that a [DragAndDropModifierNode] is interested
-     * in receiving events for a particular drag and drop session.
-     */
-    fun registerNodeInterest(node: DragAndDropModifierNode)
-
-    /**
-     * Called to check if a [DragAndDropModifierNode] has previously registered interest for a
-     * drag and drop session.
-     */
-    fun isInterestedNode(node: DragAndDropModifierNode): Boolean
+    fun requestDragAndDropTransfer(node: DragAndDropNode, offset: Offset) {
+        throw UnsupportedOperationException(
+            "requestDragAndDropTransfer is not supported in the current environment. " +
+                "A Drag & Drop transfer will be initiated by the platform itself"
+        )
+    }
 }