| /******************************************************************************* |
| * Copyright (c) 2006 Sybase, Inc. 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: |
| * Sybase, Inc. - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jst.pagedesigner.dnd.internal; |
| |
| import org.eclipse.gef.commands.Command; |
| import org.eclipse.gef.dnd.TemplateTransfer; |
| import org.eclipse.jst.pagedesigner.commands.PaletteDropInsertCommand; |
| import org.eclipse.jst.pagedesigner.editors.pagedesigner.PageDesignerResources; |
| import org.eclipse.jst.pagedesigner.editors.palette.impl.PaletteItemDescriptor; |
| import org.eclipse.swt.custom.StyledText; |
| import org.eclipse.swt.dnd.DropTargetEvent; |
| import org.eclipse.swt.dnd.TextTransfer; |
| import org.eclipse.swt.dnd.Transfer; |
| import org.eclipse.swt.graphics.Point; |
| import org.eclipse.ui.texteditor.ITextEditorDropTargetListener; |
| import org.eclipse.wst.sse.ui.StructuredTextEditor; |
| import org.eclipse.wst.sse.ui.internal.ExtendedEditorDropTargetAdapter; |
| |
| /** |
| * @author mengbo |
| */ |
| public class DesignerSourceDropTargetListener extends |
| ExtendedEditorDropTargetAdapter implements |
| ITextEditorDropTargetListener { |
| private int _location; |
| |
| private StructuredTextEditor _textEditor; |
| |
| public DesignerSourceDropTargetListener(StructuredTextEditor textEditor) { |
| super(false); |
| _textEditor = textEditor; |
| setTextViewer(_textEditor.getTextViewer()); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.ui.texteditor.ITextEditorDropTargetListener#getTransfers() |
| */ |
| public Transfer[] getTransfers() { |
| return new Transfer[] { TemplateTransfer.getInstance(), |
| TextTransfer.getInstance() }; |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.swt.dnd.DropTargetListener#dragOperationChanged(org.eclipse.swt.dnd.DropTargetEvent) |
| */ |
| public void dragOperationChanged(DropTargetEvent event) { |
| super.dragOperationChanged(event); |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.swt.dnd.DropTargetListener#dragOver(org.eclipse.swt.dnd.DropTargetEvent) |
| */ |
| public void dragOver(DropTargetEvent event) { |
| StyledText text = null; |
| if (_textEditor.getTextViewer() != null) { |
| text = _textEditor.getTextViewer().getTextWidget(); |
| if (TemplateTransfer.getInstance().isSupportedType( |
| event.currentDataType)) { |
| if (_textEditor.getTextViewer() != null) { |
| Point p = new Point(event.x, event.y); |
| SourceViewerDragDropHelper.getInstance().updateCaret( |
| _textEditor, p); |
| _location = text.getCaretOffset(); |
| if (TemplateTransfer.getInstance().isSupportedType( |
| event.currentDataType)) { |
| _location = SourceViewerDragDropHelper.getInstance() |
| .getValidLocation(_textEditor, _location); |
| } |
| SourceViewerDragDropHelper.getInstance().showCaret( |
| _textEditor, _location); |
| } |
| } else if (TextTransfer.getInstance().isSupportedType( |
| event.currentDataType)) { |
| super.dragOver(event); |
| _location = text.getCaretOffset(); |
| } |
| } |
| } |
| |
| /* |
| * (non-Javadoc) |
| * |
| * @see org.eclipse.swt.dnd.DropTargetListener#drop(org.eclipse.swt.dnd.DropTargetEvent) |
| */ |
| public void drop(DropTargetEvent event) { |
| StyledText text = null; |
| if (_textEditor.getTextViewer() != null) { |
| text = _textEditor.getTextViewer().getTextWidget(); |
| } |
| text.setCaretOffset(_location); |
| Command command = getCommand(event); |
| if (command == null) { |
| return; |
| } |
| command.execute(); |
| } |
| |
| private Command getCommand(DropTargetEvent event) { |
| if (TextTransfer.getInstance().isSupportedType(event.currentDataType)) { |
| Object data = event.data; |
| if (data instanceof String) { |
| SourceViewLocalDropCommand command = new SourceViewLocalDropCommand( |
| _textEditor, data, _location); |
| return command; |
| } |
| } else if (TemplateTransfer.getInstance().isSupportedType( |
| event.currentDataType)) { |
| Object data = event.data; |
| PaletteDropInsertCommand command = null; |
| if (data instanceof PaletteItemDescriptor) { |
| PaletteItemDescriptor descriptor = (PaletteItemDescriptor) data; |
| // "Create new item" |
| command = new PaletteDropInsertCommand( |
| PageDesignerResources |
| .getInstance() |
| .getString( |
| "DesignerSourceDropTargetListener.InserCommandLabel"), _textEditor, descriptor, _location); //$NON-NLS-1$ |
| } |
| return command; |
| } |
| return null; |
| } |
| } |