| /******************************************************************************* |
| * Copyright (c) 2004, 2018 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.wst.common.snippets.internal.dnd; |
| |
| |
| |
| import org.eclipse.core.runtime.IAdaptable; |
| import org.eclipse.jface.text.BadLocationException; |
| import org.eclipse.jface.text.IDocument; |
| import org.eclipse.jface.text.ITextSelection; |
| import org.eclipse.jface.text.TextSelection; |
| import org.eclipse.jface.viewers.ISelection; |
| import org.eclipse.jface.viewers.ISelectionProvider; |
| import org.eclipse.swt.dnd.DropTargetEvent; |
| import org.eclipse.swt.widgets.Shell; |
| import org.eclipse.ui.IEditorPart; |
| import org.eclipse.ui.texteditor.ITextEditor; |
| import org.eclipse.wst.common.snippets.core.ISnippetItem; |
| import org.eclipse.wst.common.snippets.internal.VariableItemHelper; |
| import org.eclipse.wst.common.snippets.internal.ui.EntryDeserializer; |
| |
| public class SnippetTextDropAction { |
| |
| protected String getInsertString(Shell host, ISnippetItem item) { |
| return VariableItemHelper.getInsertString(host, item, false); |
| } |
| |
| |
| protected ISnippetItem getItemData(DropTargetEvent event) { |
| ISnippetItem item = null; |
| if (event.data instanceof byte[]) { |
| item = (ISnippetItem) EntryDeserializer.getInstance().fromXML((byte[]) event.data); |
| } |
| return item; |
| } |
| |
| /** |
| * @see AbstractDropAction#run(DropTargetEvent, IEditorPart) |
| */ |
| public boolean run(DropTargetEvent event, IEditorPart targetEditor) { |
| boolean success = false; |
| if (event.data instanceof byte[]) { |
| final ISnippetItem item = getItemData(event); |
| final Shell shell = event.display.getActiveShell(); |
| final IEditorPart editor = targetEditor; |
| if (item != null) { |
| Runnable inserter = new Runnable() { |
| public void run() { |
| String insertion = getInsertString(shell, item); |
| insert(insertion, editor); |
| editor.setFocus(); |
| } |
| }; |
| shell.getDisplay().asyncExec(inserter); |
| success = true; |
| } |
| else { |
| success = insert(new String((byte[]) event.data), targetEditor); |
| } |
| } |
| else if (event.data instanceof String) { |
| success = insert((String) event.data, targetEditor); |
| } |
| return success; |
| } |
| /* |
| * Replaces targetEditor's current selection by "text" |
| */ |
| protected boolean insert(String text, IEditorPart targetEditor) { |
| if (text == null || text.length() == 0) { |
| return true; |
| } |
| |
| ITextSelection textSelection = null; |
| IDocument doc = null; |
| ISelection selection = null; |
| |
| ITextEditor textEditor = null; |
| if (targetEditor instanceof ITextEditor) { |
| textEditor = (ITextEditor) targetEditor; |
| } |
| if (textEditor == null) { |
| textEditor = ((IAdaptable) targetEditor).getAdapter(ITextEditor.class); |
| } |
| |
| if (selection == null && textEditor != null) { |
| selection = textEditor.getSelectionProvider().getSelection(); |
| } |
| if (doc == null && textEditor != null) { |
| doc = textEditor.getDocumentProvider().getDocument(textEditor.getEditorInput()); |
| } |
| |
| if (selection instanceof ITextSelection) { |
| textSelection = (ITextSelection) selection; |
| try { |
| doc.replace(textSelection.getOffset(), textSelection.getLength(), text); |
| } |
| catch (BadLocationException e) { |
| return false; |
| } |
| } |
| if (textEditor != null && textSelection != null) { |
| ISelectionProvider sp = textEditor.getSelectionProvider(); |
| ITextSelection sel = new TextSelection(textSelection.getOffset(), text.length()); |
| sp.setSelection(sel); |
| textEditor.selectAndReveal(sel.getOffset(), sel.getLength()); |
| } |
| |
| return true; |
| } |
| |
| } |