Bug 522593 - [9] Allow drag and drop of entries between modulepath and
classpath nodes
Change-Id: Id666c8708210037174546d2f5d400d52a68a5aa8
Signed-off-by: Vikas Chandra <Vikas.Chandra@in.ibm.com>
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/LibrariesWorkbookPage.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/LibrariesWorkbookPage.java
index 062cd96..0f8d54e 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/LibrariesWorkbookPage.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/LibrariesWorkbookPage.java
@@ -21,10 +21,20 @@
import java.util.Map;
import org.eclipse.swt.SWT;
+import org.eclipse.swt.dnd.DND;
+import org.eclipse.swt.dnd.DragSourceEvent;
+import org.eclipse.swt.dnd.DragSourceListener;
+import org.eclipse.swt.dnd.DropTargetEvent;
+import org.eclipse.swt.dnd.FileTransfer;
+import org.eclipse.swt.dnd.Transfer;
+import org.eclipse.swt.dnd.TransferData;
import org.eclipse.swt.events.KeyEvent;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Item;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.core.runtime.CoreException;
@@ -42,12 +52,15 @@
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.layout.PixelConverter;
+import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
+import org.eclipse.jface.viewers.ViewerDropAdapter;
import org.eclipse.jface.window.Window;
import org.eclipse.jface.wizard.WizardDialog;
import org.eclipse.ui.IImportWizard;
import org.eclipse.ui.PlatformUI;
+import org.eclipse.ui.part.ResourceTransfer;
import org.eclipse.ui.preferences.IWorkbenchPreferenceContainer;
import org.eclipse.jdt.core.IAccessRule;
@@ -105,6 +118,9 @@
private final int IDX_REPLACE= 10;
+ private boolean dragDropEnabled = false;
+ private Object draggedItemsLibrary = null;
+
public LibrariesWorkbookPage(CheckedListDialogField<CPListElement> classPathList, IWorkbenchPreferenceContainer pageContainer) {
fClassPathList= classPathList;
fPageContainer= pageContainer;
@@ -200,8 +216,133 @@
fLibrariesList.enableButton(IDX_ADDJAR, false);
fLibrariesList.enableButton(IDX_ADDLIB, false);
fLibrariesList.enableButton(IDX_ADDVAR, false);
+
+ if(dragDropEnabled == false) {
+ enableDragDropSupport();
+ }
+
}
+ private void enableDragDropSupport() {
+ dragDropEnabled= true;
+ int ops= DND.DROP_COPY | DND.DROP_MOVE | DND.DROP_DEFAULT;
+ Transfer[] transfers= new Transfer[] { ResourceTransfer.getInstance(), FileTransfer.getInstance() };
+ fLibrariesList.getTreeViewer().addDragSupport(DND.DROP_MOVE | DND.DROP_COPY, transfers, new DragSourceListener() {
+ @Override
+ public void dragStart(DragSourceEvent event) {
+ IStructuredSelection ssel= (IStructuredSelection) fLibrariesList.getTreeViewer().getSelection();
+ if (ssel == null || ssel.isEmpty()) {
+ event.doit= false;
+ }
+ if (ssel != null) {
+ Object[] ele= ssel.toArray();
+ for (Object element : ele) {
+ // dont start drag on root nodes
+ if (element instanceof RootCPListElement) {
+ event.doit= false;
+ break;
+ }
+ }
+ }
+ }
+
+ @Override
+ public void dragSetData(DragSourceEvent event) {
+ IStructuredSelection ssel= (IStructuredSelection) fLibrariesList.getTreeViewer().getSelection();
+ event.data= ssel.toArray();
+ draggedItemsLibrary= ssel.toArray();
+ }
+
+ @Override
+ public void dragFinished(DragSourceEvent event) {
+ draggedItemsLibrary= null;
+ }
+ });
+
+ fLibrariesList.getTreeViewer().addDropSupport(ops, transfers, new ViewerDropAdapter(fLibrariesList.getTreeViewer()) {
+ @Override
+ public void dragEnter(DropTargetEvent event) {
+ Object target= determineTarget(event);
+ if (target == null && event.detail == DND.DROP_COPY) {
+ event.detail= DND.DROP_MOVE;
+ }
+ super.dragEnter(event);
+ }
+
+ @Override
+ public void dragOperationChanged(DropTargetEvent event) {
+ Object target= determineTarget(event);
+ if (target == null && event.detail == DND.DROP_COPY) {
+ event.detail= DND.DROP_MOVE;
+ }
+ super.dragOperationChanged(event);
+ }
+
+ @Override
+ public void dragOver(DropTargetEvent event) {
+ Object target= determineTarget(event);
+ if (target == null && event.detail == DND.DROP_COPY) {
+ event.detail= DND.DROP_MOVE;
+ }
+ super.dragOver(event);
+ }
+
+ @Override
+ protected int determineLocation(DropTargetEvent event) {
+ if (!(event.item instanceof Item)) {
+ return LOCATION_NONE;
+ }
+ Item item= (Item) event.item;
+ Point coordinates= new Point(event.x, event.y);
+ coordinates= getViewer().getControl().toControl(coordinates);
+ if (item != null) {
+ Rectangle bounds= getBounds(item);
+ if (bounds == null) {
+ return LOCATION_NONE;
+ }
+ }
+ return LOCATION_ON;
+ }
+
+ @Override
+ public boolean performDrop(Object data) {
+ Object[] objects= (data == null) ? (Object[]) draggedItemsLibrary : (Object[]) data;
+ if (objects == null)
+ return false;
+ Object target= getCurrentTarget();
+ if (target instanceof RootCPListElement) {
+ for (Object object : objects) {
+ if (!(object instanceof CPListElement))
+ return false;
+ if(object instanceof RootCPListElement)
+ return false;
+ boolean contains= ((RootCPListElement) target).getChildren().contains(object);
+ if (contains == true)
+ return false;
+ RootCPListElement rootNode= (RootCPListElement) target;
+ boolean isModular= rootNode.isModulePathRootNode();
+ RootNodeChange direction= RootNodeChange.fromOldAndNew(!isModular, isModular);
+ if (direction != RootNodeChange.NoChange) {
+ moveCPElementAcrossNode(fLibrariesList, (CPListElement) object, direction);
+ }
+ ((CPListElement) object).setAttribute(IClasspathAttribute.MODULE, isModular ? new ModuleEncapsulationDetail[0] : null);
+ }
+ return true;
+
+ }
+ return false;
+ }
+
+ @Override
+ public boolean validateDrop(Object target, int operation, TransferData transferType) {
+ return (target instanceof RootCPListElement);
+ }
+
+ });
+
+
+ }
+
boolean hasRootNodes(){
if (fLibrariesList == null)
return false;
diff --git a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/ProjectsWorkbookPage.java b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/ProjectsWorkbookPage.java
index 3fc6731..7511ccb 100644
--- a/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/ProjectsWorkbookPage.java
+++ b/org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/ProjectsWorkbookPage.java
@@ -16,18 +16,31 @@
import java.util.List;
import org.eclipse.swt.SWT;
+import org.eclipse.swt.dnd.DND;
+import org.eclipse.swt.dnd.DragSourceEvent;
+import org.eclipse.swt.dnd.DragSourceListener;
+import org.eclipse.swt.dnd.DropTargetEvent;
+import org.eclipse.swt.dnd.FileTransfer;
+import org.eclipse.swt.dnd.Transfer;
+import org.eclipse.swt.dnd.TransferData;
import org.eclipse.swt.events.KeyEvent;
+import org.eclipse.swt.graphics.Point;
+import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Display;
+import org.eclipse.swt.widgets.Item;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.jface.layout.PixelConverter;
import org.eclipse.jface.viewers.ArrayContentProvider;
+import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jface.viewers.StructuredSelection;
+import org.eclipse.jface.viewers.ViewerDropAdapter;
import org.eclipse.jface.window.Window;
import org.eclipse.ui.dialogs.ListSelectionDialog;
+import org.eclipse.ui.part.ResourceTransfer;
import org.eclipse.ui.preferences.IWorkbenchPreferenceContainer;
import org.eclipse.jdt.core.IAccessRule;
@@ -66,6 +79,9 @@
private Control fSWTControl;
private final IWorkbenchPreferenceContainer fPageContainer;
+
+ private boolean dragDropEnabled = false;
+ private Object draggedItemsProject = null;
public ProjectsWorkbookPage(ListDialogField<CPListElement> classPathList, IWorkbenchPreferenceContainer pageContainer) {
fClassPathList= classPathList;
@@ -160,6 +176,127 @@
fProjectsList.setElements(checkedProjects);
fProjectsList.enableButton(IDX_ADDPROJECT, false);
+ if(dragDropEnabled == false) {
+ enableDragDropSupport();
+ }
+ }
+
+ private void enableDragDropSupport() {
+ dragDropEnabled= true;
+ int ops= DND.DROP_COPY | DND.DROP_MOVE | DND.DROP_DEFAULT;
+ Transfer[] transfers= new Transfer[] { ResourceTransfer.getInstance(), FileTransfer.getInstance() };
+
+ fProjectsList.getTreeViewer().addDragSupport(DND.DROP_MOVE | DND.DROP_COPY, transfers, new DragSourceListener() {
+ @Override
+ public void dragStart(DragSourceEvent event) {
+ IStructuredSelection ssel= (IStructuredSelection) fProjectsList.getTreeViewer().getSelection();
+ if (ssel == null || ssel.isEmpty()) {
+ event.doit= false;
+ }
+ if (ssel != null) {
+ Object[] ele= ssel.toArray();
+ for (Object element : ele) {
+ if (element instanceof RootCPListElement) {
+ event.doit= false;
+ break;
+ }
+ }
+ }
+ }
+
+ @Override
+ public void dragSetData(DragSourceEvent event) {
+ IStructuredSelection ssel= (IStructuredSelection) fProjectsList.getTreeViewer().getSelection();
+ event.data= ssel.toArray();
+ draggedItemsProject= ssel.toArray();
+ }
+
+ @Override
+ public void dragFinished(DragSourceEvent event) {
+ draggedItemsProject= null;
+ }
+ });
+
+ fProjectsList.getTreeViewer().addDropSupport(ops, transfers, new ViewerDropAdapter(fProjectsList.getTreeViewer()) {
+ @Override
+ public void dragEnter(DropTargetEvent event) {
+ Object target= determineTarget(event);
+ if (target == null && event.detail == DND.DROP_COPY) {
+ event.detail= DND.DROP_MOVE;
+ }
+ super.dragEnter(event);
+ }
+
+ @Override
+ public void dragOperationChanged(DropTargetEvent event) {
+ Object target= determineTarget(event);
+ if (target == null && event.detail == DND.DROP_COPY) {
+ event.detail= DND.DROP_MOVE;
+ }
+ super.dragOperationChanged(event);
+ }
+
+ @Override
+ public void dragOver(DropTargetEvent event) {
+ Object target= determineTarget(event);
+ if (target == null && event.detail == DND.DROP_COPY) {
+ event.detail= DND.DROP_MOVE;
+ }
+ super.dragOver(event);
+ }
+
+ @Override
+ protected int determineLocation(DropTargetEvent event) {
+ if (!(event.item instanceof Item)) {
+ return LOCATION_NONE;
+ }
+ Item item= (Item) event.item;
+ Point coordinates= new Point(event.x, event.y);
+ coordinates= getViewer().getControl().toControl(coordinates);
+ if (item != null) {
+ Rectangle bounds= getBounds(item);
+ if (bounds == null) {
+ return LOCATION_NONE;
+ }
+ }
+ return LOCATION_ON;
+ }
+
+ @Override
+ public boolean performDrop(Object data) {
+ Object[] objects= (data == null) ? (Object[]) draggedItemsProject : (Object[]) data;
+ if (objects == null)
+ return false;
+ Object target= getCurrentTarget();
+ if (target instanceof RootCPListElement) {
+ for (Object object : objects) {
+ if (!(object instanceof CPListElement))
+ return false;
+ if(object instanceof RootCPListElement)
+ return false;
+ boolean contains= ((RootCPListElement) target).getChildren().contains(object);
+ if (contains == true)
+ return false;
+ RootCPListElement rootNode= (RootCPListElement) target;
+ boolean isModular= rootNode.isModulePathRootNode();
+ RootNodeChange direction= RootNodeChange.fromOldAndNew(!isModular, isModular);
+ if (direction != RootNodeChange.NoChange) {
+ moveCPElementAcrossNode(fProjectsList, (CPListElement) object, direction);
+ }
+ ((CPListElement) object).setAttribute(IClasspathAttribute.MODULE, isModular ? new ModuleEncapsulationDetail[0] : null);
+ }
+ return true;
+
+ }
+ return false;
+ }
+
+ @Override
+ public boolean validateDrop(Object target, int operation, TransferData transferType) {
+ return (target instanceof RootCPListElement);
+ }
+ });
+
}
// -------- UI creation ---------
