100 lines
3.6 KiB
Java
100 lines
3.6 KiB
Java
/*******************************************************************************
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* Copyright (c) 2015-2021 MINRES Technologies GmbH and others.
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* All rights reserved. This program and the accompanying materials
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* are made available under the terms of the Eclipse Public License v1.0
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* which accompanies this distribution, and is available at
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* http://www.eclipse.org/legal/epl-v10.html
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*
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* Contributors:
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* MINRES Technologies GmbH - initial API and implementation
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*******************************************************************************/
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package com.minres.scviewer.e4.application.handlers;
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import java.io.File;
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import javax.inject.Named;
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import org.eclipse.e4.core.di.annotations.CanExecute;
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import org.eclipse.e4.core.di.annotations.Execute;
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import org.eclipse.e4.ui.model.application.MApplication;
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import org.eclipse.e4.ui.model.application.ui.basic.MPart;
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import org.eclipse.e4.ui.workbench.modeling.EModelService;
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import org.eclipse.e4.ui.workbench.modeling.EPartService;
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import org.eclipse.swt.SWT;
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import org.eclipse.swt.widgets.FileDialog;
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import org.eclipse.swt.widgets.MessageBox;
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import org.eclipse.swt.widgets.Shell;
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import com.minres.scviewer.e4.application.Messages;
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import com.minres.scviewer.e4.application.parts.WaveformViewer;
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public class LoadStoreSettingsHandler {
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static final String PARAMETER_ID="com.minres.scviewer.e4.application.commandparameter.loadStore"; //$NON-NLS-1$
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@CanExecute
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public boolean canExecute(EPartService partService) {
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MPart part = partService.getActivePart();
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if(part==null) return false;
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return (part.getObject() instanceof WaveformViewer);
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}
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@Execute
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public void execute(@Named(PARAMETER_ID) String param, Shell shell, MApplication app, EModelService modelService,
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EPartService partService){
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boolean load = "load".equals(param); //$NON-NLS-1$
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FileDialog dialog = new FileDialog(shell, load?SWT.OPEN:SWT.SAVE);
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dialog.setFilterExtensions (new String []{Messages.LoadStoreSettingsHandler_2});
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if(!load) dialog.setFileName(Messages.LoadStoreSettingsHandler_3);
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String fileName = null;
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MPart part = partService.getActivePart();
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Object obj = part.getObject();
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// Save active tab settings
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if(!load) {
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// 3 possible cases when when saving active tab settings:
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// - user dismisses the dialog by pressing Cancel
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// - selected file name does not exist
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// - user agrees to overwrite existing file
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boolean done = false;
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while (!done) {
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// open the File Dialog
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fileName = dialog.open();
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if (fileName == null) {
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// user has cancelled -> quit and return
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done = true;
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} else {
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// user has selected a file -> see if it already exists
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File file = new File(fileName);
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if (file.exists()) {
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// file already exists -> asks for confirmation
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MessageBox mb = new MessageBox(dialog.getParent(), SWT.ICON_WARNING
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| SWT.YES | SWT.NO);
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mb.setText("Confirm overwrite");
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mb.setMessage(fileName + " already exists. Do you want to overwrite it?");
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// user clicks Yes -> all done, drop out
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if(mb.open() == SWT.YES) {
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((WaveformViewer)obj).saveState(fileName);
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done = true;
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} else { // user clicks No -> redisplay the File Dialog
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done = false;
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}
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} else {
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// file does not exist -> save and drop out
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((WaveformViewer)obj).saveState(fileName);
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done = true;
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}
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}
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}
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return;
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} // end if(!load)
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else { // load active tab settings
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String res = dialog.open();
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if(res != null && part!=null && (obj instanceof WaveformViewer)) {
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((WaveformViewer)obj).loadState(res);
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}
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}
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}
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} |