| /******************************************************************************* |
| * Copyright (c) 2012 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| ******************************************************************************/ |
| |
| package org.eclipse.e4.ui.workbench.addons.dndaddon; |
| |
| import org.eclipse.e4.ui.model.application.ui.MUIElement; |
| import org.eclipse.e4.ui.model.application.ui.basic.MTrimElement; |
| import org.eclipse.e4.ui.model.application.ui.menu.MToolControl; |
| import org.eclipse.e4.ui.widgets.ImageBasedFrame; |
| import org.eclipse.e4.ui.workbench.addons.minmax.TrimStack; |
| import org.eclipse.swt.SWT; |
| import org.eclipse.swt.graphics.Rectangle; |
| import org.eclipse.swt.widgets.Shell; |
| |
| /** |
| * |
| */ |
| public class IBFDragAgent extends DragAgent { |
| |
| private ImageBasedFrame frame; |
| private Shell ds; |
| |
| /** |
| * @param manager |
| */ |
| public IBFDragAgent(DnDManager manager) { |
| super(manager); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * org.eclipse.e4.ui.workbench.addons.dndaddon.DragAgent#getElementToDrag(org.eclipse.e4.ui. |
| * workbench.addons.dndaddon.DnDInfo) |
| */ |
| @Override |
| public MUIElement getElementToDrag(DnDInfo info) { |
| if (!(info.curCtrl instanceof ImageBasedFrame)) |
| return null; |
| |
| if (!(info.curElement instanceof MTrimElement)) |
| return null; |
| |
| ImageBasedFrame frame = (ImageBasedFrame) info.curCtrl; |
| Rectangle handleRect = frame.getHandleRect(); |
| handleRect = frame.getDisplay().map(frame, null, handleRect); |
| |
| if (handleRect.contains(info.cursorPos)) { |
| dragElement = info.curElement; |
| return info.curElement; |
| } |
| |
| return null; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * org.eclipse.e4.ui.workbench.addons.dndaddon.DragAgent#dragStart(org.eclipse.e4.ui.workbench |
| * .addons.dndaddon.DnDInfo) |
| */ |
| @Override |
| public void dragStart(DnDInfo info) { |
| super.dragStart(info); |
| |
| if (dragElement instanceof MToolControl) { |
| MToolControl tc = (MToolControl) dragElement; |
| if (tc.getObject() instanceof TrimStack) { |
| TrimStack ts = (TrimStack) tc.getObject(); |
| ts.showStack(false); |
| } |
| } |
| |
| if (dropAgent == null) |
| attachToCursor(info); |
| } |
| |
| private void attachToCursor(DnDInfo info) { |
| frame = (ImageBasedFrame) dragElement.getWidget(); |
| dragElement.setVisible(false); |
| |
| if (ds == null) |
| ds = new Shell(dndManager.getDragShell(), SWT.NO_TRIM); |
| |
| frame.setParent(ds); |
| frame.setLocation(0, 0); |
| ds.setSize(frame.getSize()); |
| ds.setLocation(info.cursorPos.x - 5, info.cursorPos.y - 5); |
| |
| ds.open(); |
| info.update(); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see |
| * org.eclipse.e4.ui.workbench.addons.dndaddon.DragAgent#track(org.eclipse.e4.ui.workbench.addons |
| * .dndaddon.DnDInfo) |
| */ |
| @Override |
| public void track(DnDInfo info) { |
| super.track(info); |
| |
| if (dropAgent != null && ds != null && !ds.isDisposed() && ds.getChildren().length == 0) { |
| ds.dispose(); |
| ds = null; |
| } |
| if (dropAgent == null) |
| attachToCursor(info); |
| |
| if (ds != null) |
| ds.setLocation(info.cursorPos.x - 5, info.cursorPos.y - 5); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.e4.ui.workbench.addons.dndaddon.DragAgent#dragFinished(boolean, |
| * org.eclipse.e4.ui.workbench.addons.dndaddon.DnDInfo) |
| */ |
| @Override |
| public void dragFinished(boolean performDrop, DnDInfo info) { |
| dragElement.setVisible(true); |
| |
| super.dragFinished(performDrop, info); |
| |
| // NOTE: the dragElement should no longer be a child of the shell |
| if (ds != null && !ds.isDisposed()) |
| ds.dispose(); |
| ds = null; |
| } |
| } |