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Package: AbstractSchemaExportCommandHandler
AbstractSchemaExportCommandHandler
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| AbstractSchemaExportCommandHandler() |
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| execute(ExecutionEvent) |
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| getLocationProposal(ExecutionEvent) |
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| openWizard(Collection, ExecutionEvent, Shell) |
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Coverage
1: /*******************************************************************************
2: * Copyright (c) 2011-2015 EclipseSource Muenchen GmbH and others.
3: *
4: * All rights reserved. This program and the accompanying materials
5: * are made available under the terms of the Eclipse Public License 2.0
6: * which accompanies this distribution, and is available at
7: * https://www.eclipse.org/legal/epl-2.0/
8: *
9: * SPDX-License-Identifier: EPL-2.0
10: *
11: * Contributors:
12: * Stefan Dirix - initial API and implementation
13: ******************************************************************************/
14: package org.eclipse.emf.ecp.emf2web.ui.handler;
15:
16: import java.io.PrintWriter;
17: import java.io.StringWriter;
18: import java.util.ArrayList;
19: import java.util.Collection;
20: import java.util.List;
21:
22: import org.eclipse.core.commands.AbstractHandler;
23: import org.eclipse.core.commands.ExecutionEvent;
24: import org.eclipse.core.commands.ExecutionException;
25: import org.eclipse.core.resources.IContainer;
26: import org.eclipse.core.resources.IFile;
27: import org.eclipse.core.runtime.IStatus;
28: import org.eclipse.core.runtime.MultiStatus;
29: import org.eclipse.core.runtime.Status;
30: import org.eclipse.emf.common.util.URI;
31: import org.eclipse.emf.ecp.emf2web.controller.xtend.GenerationController;
32: import org.eclipse.emf.ecp.emf2web.controller.xtend.GenerationInfo;
33: import org.eclipse.emf.ecp.emf2web.exporter.GenerationExporter;
34: import org.eclipse.emf.ecp.emf2web.ui.messages.Messages;
35: import org.eclipse.emf.ecp.emf2web.ui.wizard.ExportSchemasWizard;
36: import org.eclipse.emf.ecp.view.spi.model.VView;
37: import org.eclipse.jface.dialogs.ErrorDialog;
38: import org.eclipse.jface.viewers.IStructuredSelection;
39: import org.eclipse.jface.wizard.WizardDialog;
40: import org.eclipse.swt.graphics.Point;
41: import org.eclipse.swt.widgets.Shell;
42: import org.eclipse.ui.handlers.HandlerUtil;
43:
44: /**
45: * Abstract implementation for an handler responsible for exporting view models.
46: */
47: public abstract class AbstractSchemaExportCommandHandler extends AbstractHandler {
48:
49: /**
50: * This implementation uses the {@link #getViews(ExecutionEvent)}
51: * and {@link #openWizard(Collection, ExecutionEvent, Shell)} methods to open an export wizard.
52: *
53: * @param event {@inheritDoc}
54: * @return {@inheritDoc}
55: * @throws ExecutionException {@inheritDoc}
56: */
57: @Override
58: public Object execute(ExecutionEvent event) throws ExecutionException {
59: try {
60: final Collection<VView> views = getViews(event);
61:• if (views == null || views.isEmpty()) {
62: return null;
63: }
64:
65: final Shell shell = HandlerUtil.getActiveShell(event);
66: openWizard(views, event, shell);
67: // BEGIN SUPRESS CATCH EXCEPTION
68: } catch (final RuntimeException e) {
69: // END SUPRESS CATCH EXCEPTION
70: handleRuntimeException(e);
71: }
72:
73: return null;
74: }
75:
76: /**
77: * Is called if a RuntimeException occurs during execution.
78: *
79: * @param e the {@link RuntimeException}.
80: * @throws ExecutionException
81: * Wraps the given RuntimeException and throws it.
82: */
83: protected void handleRuntimeException(RuntimeException e) throws ExecutionException {
84: final StringWriter sw = new StringWriter();
85: e.printStackTrace(new PrintWriter(sw));
86: final String stackTrace = sw.toString();
87:
88: final List<Status> childStatuses = new ArrayList<Status>();
89:• for (final String line : stackTrace.split(System.getProperty("line.separator"))) { //$NON-NLS-1$
90: childStatuses.add(new Status(IStatus.ERROR, "org.eclipse.emf.ecp.emf2web.ui", line)); //$NON-NLS-1$
91: }
92: final MultiStatus status = new MultiStatus("org.eclipse.emf.ecp.emf2web.ui", IStatus.ERROR, //$NON-NLS-1$
93: childStatuses.toArray(new Status[] {}),
94: e.getLocalizedMessage(), e);
95:
96: ErrorDialog.openError(null, Messages.getString("AbstractSchemaExportCommandHandler.Error_Title"), //$NON-NLS-1$
97: Messages.getString("AbstractSchemaExportCommandHandler.Error_Message"), //$NON-NLS-1$
98: status);
99: throw new ExecutionException(Messages.getString("AbstractSchemaExportCommandHandler.Error_Message"), e); //$NON-NLS-1$
100: }
101:
102: /**
103: * The default implementation opens the {@link ExportSchemaWizard} using the generation handlers returned by
104: * {@link #getGenerationController()} and {@link #getGenerationExporter()}.
105: *
106: * @param views
107: * The views which shall be exported.
108: * @param event
109: * The {@link ExecutionEvent} which is given by the {@link #execute(ExecutionEvent)} method.
110: * @param shell
111: * The shell for the wizard.
112: * @return
113: * The return value of the {@link WizardDialog}.
114: */
115: protected int openWizard(Collection<VView> views, ExecutionEvent event, Shell shell) {
116: final List<GenerationInfo> generationInfos = getGenerationController().generate(views);
117: final URI locationProposal = getLocationProposal(event);
118: final ExportSchemasWizard wizard = new ExportSchemasWizard(generationInfos, getGenerationExporter(),
119: locationProposal);
120: final WizardDialog dialog = new WizardDialog(shell, wizard);
121: dialog.setPageSize(new Point(600, 600));
122: return dialog.open();
123: }
124:
125: /**
126: * Returns a proposal for the export location. The default implementation returns the container of the first
127: * selected element.
128: *
129: * @param event
130: * The {@link ExecutionEvent} which is given by the {@link #execute(ExecutionEvent)} method.
131: * @return
132: * The location proposal for the export. {@code null} if no proposal could be determined.
133: */
134: protected URI getLocationProposal(ExecutionEvent event) {
135: final IStructuredSelection selection = (IStructuredSelection) HandlerUtil
136: .getCurrentSelection(event);
137: final Object firstElement = selection.getFirstElement();
138:• if (IFile.class.isInstance(firstElement)) {
139: final IFile file = IFile.class.cast(firstElement);
140: final IContainer container = file.getParent();
141: return URI.createPlatformResourceURI(container.getFullPath().toString(), true);
142: }
143: return null;
144: }
145:
146: /**
147: * Returns the views which shall be exported.
148: *
149: * @param event
150: * The {@link ExecutionEvent} which is given by the {@link #execute(ExecutionEvent)} method.
151: * @return
152: * The collection of views which shall be exported.
153: */
154: protected abstract Collection<VView> getViews(ExecutionEvent event);
155:
156: /**
157: * Returns the {@link GenerationController} which shall be used to generate the files.
158: *
159: * @return
160: * The {@link GenerationController} which shall be used.
161: */
162: protected abstract GenerationController getGenerationController();
163:
164: /**
165: * Returns the {@link GenerationExporter} responsible for creating the files generated by the
166: * {@link GenerationController}.
167: *
168: * @return
169: * The {@link GenerationExporter} which shall be used.
170: */
171: protected abstract GenerationExporter getGenerationExporter();
172: }