| /* |
| * Copyright 2000-2011 JetBrains s.r.o. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| package com.intellij.ide.dnd; |
| |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.openapi.util.UserDataHolderBase; |
| import com.intellij.ui.awt.RelativePoint; |
| import com.intellij.ui.awt.RelativeRectangle; |
| import com.intellij.util.ArrayUtil; |
| import org.jetbrains.annotations.Nullable; |
| |
| import javax.swing.*; |
| import java.awt.*; |
| import java.awt.datatransfer.DataFlavor; |
| import java.awt.datatransfer.Transferable; |
| import java.awt.datatransfer.UnsupportedFlavorException; |
| import java.io.File; |
| import java.io.IOException; |
| import java.util.List; |
| |
| public class DnDEventImpl extends UserDataHolderBase implements Transferable, DnDEvent { |
| private static final Logger LOG = Logger.getInstance("com.intellij.ide.dnd.DnDEventImpl"); |
| |
| public static final DataFlavor ourDataFlavor = FileCopyPasteUtil.createDataFlavor(DataFlavor.javaJVMLocalObjectMimeType); |
| |
| private DnDTarget myDelegatedTarget; |
| private DnDManagerImpl myManager; |
| private DnDAction myAction; |
| private Object myAttachedObject; |
| private boolean myDropPossible; |
| private String myExpectedDropResult; |
| private Point myPoint; |
| private Point myOrgPoint; |
| |
| private int myHighlighting; |
| |
| private DropActionHandler myDropHandler; |
| private Component myHandlerComponent; |
| private boolean myShouldRemoveHighlighter = true; |
| private Point myLocalPoint; |
| private Cursor myCursor; |
| |
| public DnDEventImpl(DnDManagerImpl manager, DnDAction action, Object attachedObject, Point point) { |
| myManager = manager; |
| myAction = action; |
| myAttachedObject = attachedObject; |
| myPoint = point; |
| } |
| |
| public DnDAction getAction() { |
| return myAction; |
| } |
| |
| public void updateAction(DnDAction action) { |
| myAction = action; |
| } |
| |
| public Object getAttachedObject() { |
| return myAttachedObject; |
| } |
| |
| public void setDropPossible(boolean possible, @Nullable String aExpectedResult) { |
| myDropPossible = possible; |
| myExpectedDropResult = aExpectedResult; |
| clearDropHandler(); |
| } |
| |
| @Override |
| public void setDropPossible(boolean possible) { |
| setDropPossible(possible, null); |
| } |
| |
| public void setDropPossible(String aExpectedResult, DropActionHandler aHandler) { |
| myDropPossible = true; |
| myExpectedDropResult = aExpectedResult; |
| myDropHandler = aHandler; |
| } |
| |
| public String getExpectedDropResult() { |
| return myExpectedDropResult; |
| } |
| |
| public DataFlavor[] getTransferDataFlavors() { |
| if (myAttachedObject instanceof Transferable) { |
| return ((Transferable)myAttachedObject).getTransferDataFlavors(); |
| } |
| else if (myAttachedObject instanceof FileFlavorProvider) { |
| return new DataFlavor[]{ourDataFlavor, DataFlavor.javaFileListFlavor, LinuxDragAndDropSupport.uriListFlavor}; |
| } |
| else if (myAttachedObject instanceof DnDNativeTarget.EventInfo) { |
| return ((DnDNativeTarget.EventInfo)myAttachedObject).getFlavors(); |
| } |
| return new DataFlavor[]{ourDataFlavor}; |
| } |
| |
| public Object getTransferData(DataFlavor flavor) throws UnsupportedFlavorException, IOException { |
| if (myAttachedObject instanceof Transferable) { |
| return ((Transferable)myAttachedObject).getTransferData(flavor); |
| } |
| else if (myAttachedObject instanceof FileFlavorProvider && flavor == DataFlavor.javaFileListFlavor) { |
| final List<File> files = ((FileFlavorProvider)myAttachedObject).asFileList(); |
| if (files != null) { |
| return files; |
| } |
| } |
| else if (myAttachedObject instanceof FileFlavorProvider && flavor == LinuxDragAndDropSupport.uriListFlavor) { |
| final List<File> files = ((FileFlavorProvider)myAttachedObject).asFileList(); |
| if (files != null) { |
| return LinuxDragAndDropSupport.toUriList(files); |
| } |
| } |
| |
| return getAttachedObject(); |
| } |
| |
| public boolean isDataFlavorSupported(DataFlavor flavor) { |
| DataFlavor[] flavors = getTransferDataFlavors(); |
| return ArrayUtil.find(flavors, flavor) != -1; |
| } |
| |
| public boolean isDropPossible() { |
| return myDropPossible; |
| } |
| |
| public Point getOrgPoint() { |
| return myOrgPoint; |
| } |
| |
| public void setOrgPoint(Point orgPoint) { |
| myOrgPoint = orgPoint; |
| } |
| |
| void setPoint(Point aPoint) { |
| myPoint = aPoint; |
| } |
| |
| public Point getPoint() { |
| // TODO: it is better to return a new point every time |
| return myPoint; |
| } |
| |
| public Point getPointOn(Component aComponent) { |
| return SwingUtilities.convertPoint(myHandlerComponent, getPoint(), aComponent); |
| } |
| |
| void clearDropHandler() { |
| myDropHandler = null; |
| } |
| |
| public boolean canHandleDrop() { |
| LOG.debug("canHandleDrop:" + myDropHandler); |
| return myDropHandler != null; |
| } |
| |
| protected void handleDrop() { |
| myDropHandler.performDrop(this); |
| } |
| |
| void setHandlerComponent(Component aOverComponent) { |
| myHandlerComponent = aOverComponent; |
| } |
| |
| public Component getHandlerComponent() { |
| return myHandlerComponent; |
| } |
| |
| public Component getCurrentOverComponent() { |
| return getHandlerComponent().getComponentAt(getPoint()); |
| } |
| |
| public void setHighlighting(Component aComponent, int aType) { |
| myManager.showHighlighter(aComponent, aType, this); |
| myHighlighting = aType; |
| } |
| |
| public void setHighlighting(RelativeRectangle rectangle, int aType) { |
| getHandlerComponent(); |
| myManager.showHighlighter(rectangle, aType, this); |
| myHighlighting = aType; |
| } |
| |
| public void setHighlighting(JLayeredPane layeredPane, RelativeRectangle rectangle, int aType) { |
| myManager.showHighlighter(layeredPane, rectangle, aType, this); |
| } |
| |
| boolean shouldRemoveHighlighting() { |
| return myShouldRemoveHighlighter; |
| } |
| |
| public void setAutoHideHighlighterInDrop(boolean aValue) { |
| myShouldRemoveHighlighter = aValue; |
| } |
| |
| public void hideHighlighter() { |
| myManager.hideCurrentHighlighter(); |
| myHighlighting = 0; |
| } |
| |
| public void setLocalPoint(Point localPoint) { |
| myLocalPoint = localPoint; |
| } |
| |
| /** |
| * Returns point relative to dnd target's origin |
| */ |
| public Point getLocalPoint() { |
| return myLocalPoint; |
| } |
| |
| public RelativePoint getRelativePoint() { |
| return new RelativePoint(getCurrentOverComponent(), getPoint()); |
| } |
| |
| public void clearDelegatedTarget() { |
| myDelegatedTarget = null; |
| } |
| |
| public boolean wasDelegated() { |
| return myDelegatedTarget != null; |
| } |
| |
| public DnDTarget getDelegatedTarget() { |
| return myDelegatedTarget; |
| } |
| |
| public boolean delegateUpdateTo(DnDTarget target) { |
| myDelegatedTarget = target; |
| return myDelegatedTarget.update(this); |
| } |
| |
| public void delegateDropTo(DnDTarget target) { |
| myDelegatedTarget = target; |
| target.drop(this); |
| } |
| |
| protected Object clone() { |
| final DnDEventImpl result = new DnDEventImpl(myManager, myAction, myAttachedObject, myPoint); |
| result.myDropHandler = myDropHandler; |
| result.myDropPossible = myDropPossible; |
| result.myExpectedDropResult = myExpectedDropResult; |
| result.myHighlighting = myHighlighting; |
| return result; |
| } |
| |
| public boolean equals(Object o) { |
| if( this == o ) { |
| return true; |
| } |
| if( !(o instanceof DnDEventImpl) ) { |
| return false; |
| } |
| |
| final DnDEventImpl event = (DnDEventImpl) o; |
| |
| if( myDropPossible != event.myDropPossible ) { |
| return false; |
| } |
| if( myHighlighting != event.myHighlighting ) { |
| return false; |
| } |
| if( myAttachedObject != null? !myAttachedObject.equals(event.myAttachedObject): event.myAttachedObject != null ) { |
| return false; |
| } |
| if( myExpectedDropResult != null? !myExpectedDropResult.equals(event.myExpectedDropResult): event.myExpectedDropResult != null ) { |
| return false; |
| } |
| |
| return true; |
| } |
| |
| public int hashCode() { |
| int result; |
| result = (myAttachedObject != null ? myAttachedObject.hashCode() : 0); |
| result = 29 * result + (myDropPossible ? 1 : 0); |
| result = 29 * result + (myExpectedDropResult != null ? myExpectedDropResult.hashCode() : 0); |
| result = 29 * result + myHighlighting; |
| return result; |
| } |
| |
| public Cursor getCursor() { |
| return myCursor; |
| } |
| |
| public String toString() { |
| return "DnDEvent[attachedObject: " + myAttachedObject + ", delegatedTarget: " + myDelegatedTarget + ", dropHandler: " + myDropHandler + "]"; |
| } |
| |
| public void setCursor(Cursor cursor) { |
| myCursor = cursor; |
| } |
| |
| public void cleanUp() { |
| myAttachedObject = null; |
| myDelegatedTarget = null; |
| myDropHandler = null; |
| myHandlerComponent = null; |
| myManager = null; |
| } |
| } |