Bug 571291: [Property] provide a new widget to edit a string representing a workspace file

Change-Id: I331d184d339633fdfeb51ee3dc133aeadb09bbff
Signed-off-by: Vincent Lorenzo <vincent.lorenzo@cea.fr>

10 files changed, 640 insertions, 8 deletions

diff --git a/plugins/infra/properties/org.eclipse.papyrus.infra.properties.ui/META-INF/MANIFEST.MF b/plugins/infra/properties/org.eclipse.papyrus.infra.properties.ui/META-INF/MANIFEST.MF
index 2ea473dece6..f9c20d7a058 100644
--- a/plugins/infra/properties/org.eclipse.papyrus.infra.properties.ui/META-INF/MANIFEST.MF
+++ b/plugins/infra/properties/org.eclipse.papyrus.infra.properties.ui/META-INF/MANIFEST.MF
@@ -41,7 +41,7 @@ Require-Bundle: org.eclipse.core.databinding.property;bundle-version="[1.8.0,2.0
  org.eclipse.uml2.types;bundle-version="[2.5.0,3.0.0)",
  org.eclipse.xwt;bundle-version="[1.4.0,2.0.0)"
 Bundle-Vendor: %Bundle-Vendor
-Bundle-Version: 4.0.0.qualifier
+Bundle-Version: 4.1.0.qualifier
 Eclipse-BuddyPolicy: dependent
 Bundle-Activator: org.eclipse.papyrus.infra.properties.internal.ui.Activator
 Bundle-ManifestVersion: 2
diff --git a/plugins/infra/properties/org.eclipse.papyrus.infra.properties.ui/model/Environment.xmi b/plugins/infra/properties/org.eclipse.papyrus.infra.properties.ui/model/Environment.xmi
index be88069acbf..f8c3bbc4342 100644
--- a/plugins/infra/properties/org.eclipse.papyrus.infra.properties.ui/model/Environment.xmi
+++ b/plugins/infra/properties/org.eclipse.papyrus.infra.properties.ui/model/Environment.xmi
@@ -196,6 +196,10 @@
       label="DirectorySelector"
       widgetClass="StringDirectorySelector"
       namespace="//@namespaces.3"/>
+  <propertyEditorTypes
+      label="WorkspaceFileSelector"
+      widgetClass="StringWorkspaceFileSelector"
+      namespace="//@namespaces.3"/>
   <compositeWidgetTypes
       label="Composite"
       widgetClass="Composite"/>
diff --git a/plugins/infra/properties/org.eclipse.papyrus.infra.properties.ui/pom.xml b/plugins/infra/properties/org.eclipse.papyrus.infra.properties.ui/pom.xml
index ec0889a7d12..fc6b9b05bee 100644
--- a/plugins/infra/properties/org.eclipse.papyrus.infra.properties.ui/pom.xml
+++ b/plugins/infra/properties/org.eclipse.papyrus.infra.properties.ui/pom.xml
@@ -9,6 +9,6 @@
 		<version>0.0.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>org.eclipse.papyrus.infra.properties.ui</artifactId>
-	<version>4.0.0-SNAPSHOT</version>
+	<version>4.1.0-SNAPSHOT</version>
 	<packaging>eclipse-plugin</packaging>
 </project>
\ No newline at end of file
diff --git a/plugins/infra/properties/org.eclipse.papyrus.infra.properties.ui/src/org/eclipse/papyrus/infra/properties/ui/widgets/StringWorkspaceFileSelector.java b/plugins/infra/properties/org.eclipse.papyrus.infra.properties.ui/src/org/eclipse/papyrus/infra/properties/ui/widgets/StringWorkspaceFileSelector.java
new file mode 100755
index 00000000000..03307747ee3
--- /dev/null
+++ b/plugins/infra/properties/org.eclipse.papyrus.infra.properties.ui/src/org/eclipse/papyrus/infra/properties/ui/widgets/StringWorkspaceFileSelector.java
@@ -0,0 +1,194 @@
+/*****************************************************************************
+ * Copyright (c) 2021 CEA LIST.
+ *
+ *
+ * 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:
+ *  Vincent Lorenzo (CEA LIST) vincent.lorenzo@cea.fr - Initial API and implementation
+ *
+ *****************************************************************************/
+
+package org.eclipse.papyrus.infra.properties.ui.widgets;
+
+import org.eclipse.emf.common.util.URI;
+import org.eclipse.emf.ecore.EObject;
+import org.eclipse.papyrus.infra.properties.ui.modelelement.DataSource;
+import org.eclipse.papyrus.infra.properties.ui.modelelement.EMFModelElement;
+import org.eclipse.papyrus.infra.properties.ui.modelelement.ModelElement;
+import org.eclipse.swt.widgets.Composite;
+
+/**
+ * Adapted code from StringFileSelector
+ *
+ * This widget allows to select a workspace file for String field
+ * The String field is read-only.
+ * The file selection can be restricted to the current project or displayed all workspace project using the property showOnlyCurrentProject
+ * The files to show can be filtered by their extension
+ *
+ * @since 4.1
+ *
+ */
+public class StringWorkspaceFileSelector extends AbstractPropertyEditor {
+
+	/**
+	 * The StringFileSelector widget used by this property editor
+	 */
+	protected org.eclipse.papyrus.infra.widgets.editors.StringWorkspaceFileSelector selector;
+
+	/**
+	 * The filtered extensions
+	 * This should be a 1-1 mapping with {@link #filterNames}
+	 */
+	protected String[] filterExtensions;
+
+	/**
+	 * The name of the filters.
+	 * This should be a 1-1 mapping with {@link #filterExtensions}
+	 */
+	protected String[] filterNames;
+
+	/**
+	 * if <code>true</code> the Browse workspace action will show only the current project
+	 */
+	protected boolean showOnlyCurrentProject = false;;
+
+	/**
+	 *
+	 * Constructor.
+	 *
+	 * @param parent
+	 * @param style
+	 */
+	public StringWorkspaceFileSelector(Composite parent, int style) {
+		selector = createSelector(parent, style);
+		super.setEditor(selector);
+	}
+
+	/**
+	 * Creates the selector
+	 *
+	 * @param parent
+	 *            The composite in which the widget will be displayed
+	 * @param style
+	 *            The style for the widget
+	 * @return the selector
+	 */
+	protected org.eclipse.papyrus.infra.widgets.editors.StringWorkspaceFileSelector createSelector(Composite parent, int style) {
+		return new org.eclipse.papyrus.infra.widgets.editors.StringWorkspaceFileSelector(parent, style);
+	}
+
+	/**
+	 *
+	 * @param filterExtensions
+	 */
+	public void setFilterExtensions(String[] filterExtensions) {
+		this.filterExtensions = filterExtensions;
+		checkFilters();
+	}
+
+	/**
+	 *
+	 * @return
+	 *         the filter extension
+	 */
+	public String[] getFilterExtensions() {
+		return this.filterExtensions;
+	}
+
+	/**
+	 *
+	 * @see org.eclipse.papyrus.infra.properties.ui.widgets.AbstractPropertyEditor#setProperty(java.lang.String)
+	 *
+	 * @param path
+	 */
+	@Override
+	public void setProperty(String path) {
+		super.setProperty(path);
+		selector.setProjectName(getCurrentProjectName());
+	}
+
+	/**
+	 *
+	 * @see org.eclipse.papyrus.infra.properties.ui.widgets.AbstractPropertyEditor#setInput(org.eclipse.papyrus.infra.properties.ui.modelelement.DataSource)
+	 *
+	 * @param input
+	 */
+	@Override
+	public void setInput(DataSource input) {
+		super.setInput(input);
+		selector.setProjectName(getCurrentProjectName());
+	}
+
+	/**
+	 *
+	 * @param filterNames
+	 */
+	public void setFilterNames(String[] filterNames) {
+		this.filterNames = filterNames;
+		checkFilters();
+	}
+
+	/**
+	 *
+	 * @return
+	 *         the name of the filters
+	 */
+	public String[] getFilterNames() {
+		return this.filterNames;
+	}
+
+	/**
+	 * Checks if the filters are valid
+	 */
+	protected void checkFilters() {
+		if (filterExtensions != null && filterNames != null) {
+			selector.setFilters(filterExtensions, filterNames);
+		}
+	}
+
+	/**
+	 *
+	 * @param showOnlyCurrentProject
+	 *            if <code>true</code> the Browse action will only show the current project
+	 */
+	public void setShowOnlyCurrentProject(final boolean showOnlyCurrentProject) {
+		this.showOnlyCurrentProject = showOnlyCurrentProject;
+		this.selector.setShowOnlyCurrentProject(showOnlyCurrentProject);
+	}
+
+	/**
+	 *
+	 * @return
+	 *         the name of the current project
+	 */
+	protected final String getCurrentProjectName() {
+		String currentProjectName = null;
+		if (input != null && propertyPath != null) {
+			ModelElement modelElement = input.getModelElement(propertyPath);
+			if (modelElement instanceof EMFModelElement) {
+				final EObject source = ((EMFModelElement) modelElement).getSource();
+				final URI uri = source.eResource().getURI();
+				if (uri.isPlatformResource() && uri.segmentCount() >= 2) {
+					currentProjectName = uri.segment(1);
+				}
+			}
+		}
+		return currentProjectName;
+	}
+
+	/**
+	 *
+	 * @return
+	 *         boolean indicating if we want to show only the current project in the Browse action
+	 */
+	public boolean getShowOnlyCurrentProject() {
+		return this.showOnlyCurrentProject;
+	}
+
+}
\ No newline at end of file
diff --git a/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/META-INF/MANIFEST.MF b/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/META-INF/MANIFEST.MF
index ed08e83d949..aeb857a98a2 100644
--- a/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/META-INF/MANIFEST.MF
+++ b/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/META-INF/MANIFEST.MF
@@ -33,7 +33,7 @@ Export-Package: org.eclipse.papyrus.infra.widgets,
  org.eclipse.papyrus.infra.widgets.wizard.pages
 Bundle-Vendor: %providerName
 Bundle-ActivationPolicy: lazy
-Bundle-Version: 4.0.0.qualifier
+Bundle-Version: 4.1.0.qualifier
 Bundle-Name: %pluginName
 Bundle-Localization: plugin
 Bundle-ManifestVersion: 2
diff --git a/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/pom.xml b/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/pom.xml
index a5a11d32348..5d25a653cfc 100644
--- a/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/pom.xml
+++ b/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/pom.xml
@@ -9,6 +9,6 @@
 		<version>0.0.1-SNAPSHOT</version>
 	</parent>
 	<artifactId>org.eclipse.papyrus.infra.widgets</artifactId>
-	<version>4.0.0-SNAPSHOT</version>
+	<version>4.1.0-SNAPSHOT</version>
 	<packaging>eclipse-plugin</packaging>
 </project>
\ No newline at end of file
diff --git a/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/src/org/eclipse/papyrus/infra/widgets/editors/StringWorkspaceFileSelector.java b/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/src/org/eclipse/papyrus/infra/widgets/editors/StringWorkspaceFileSelector.java
new file mode 100755
index 00000000000..2a32e20ff19
--- /dev/null
+++ b/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/src/org/eclipse/papyrus/infra/widgets/editors/StringWorkspaceFileSelector.java
@@ -0,0 +1,352 @@
+/*****************************************************************************
+ * Copyright (c) 2021 CEA LIST.
+ *
+ *
+ * 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:
+ *  Vincent Lorenzo (CEA LIST) vincent.lorenzo@cea.fr - Initial API and implementation
+ *
+ *****************************************************************************/
+package org.eclipse.papyrus.infra.widgets.editors;
+
+import java.util.Arrays;
+import java.util.LinkedHashMap;
+import java.util.LinkedList;
+import java.util.List;
+
+import org.eclipse.core.resources.IFile;
+import org.eclipse.jface.viewers.ILabelProvider;
+import org.eclipse.jface.window.Window;
+import org.eclipse.papyrus.infra.core.services.ServiceException;
+import org.eclipse.papyrus.infra.services.labelprovider.service.LabelProviderService;
+import org.eclipse.papyrus.infra.services.labelprovider.service.impl.LabelProviderServiceImpl;
+import org.eclipse.papyrus.infra.widgets.Activator;
+import org.eclipse.papyrus.infra.widgets.messages.Messages;
+import org.eclipse.papyrus.infra.widgets.providers.SingleProjectContentProvider;
+import org.eclipse.papyrus.infra.widgets.providers.WorkspaceContentProvider;
+import org.eclipse.papyrus.infra.widgets.util.FileUtil;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.SelectionEvent;
+import org.eclipse.swt.events.SelectionListener;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.layout.GridLayout;
+import org.eclipse.swt.widgets.Button;
+import org.eclipse.swt.widgets.Composite;
+
+/**
+ * Adapted code from StringFileSelector
+ *
+ * This widget allows to select a workspace file for String field
+ * The String field is read-only.
+ * The file selection can be restricted to the current project or displayed all workspace project using the property showOnlyCurrentProject
+ * The files to show can be filtered by their extension
+ *
+ * @since 4.1
+ *
+ */
+public class StringWorkspaceFileSelector extends StringEditor {
+
+	/**
+	 * the delete button
+	 */
+	private Button deleteButton;
+
+	/**
+	 * the button to browse the workspace
+	 */
+	private Button browseWorkspace;
+
+	/**
+	 * the list of the name of the file filters
+	 */
+	private List<String> filterNames;
+
+	/**
+	 * the list of the file extension to filter
+	 */
+	private List<String> filterExtensions;
+
+	/**
+	 * boolean indicating if the elements must be read only
+	 */
+	private boolean readOnly = false;
+
+	/**
+	 * boolean indicating if the browse workspace must show only the current project or all workspace project
+	 */
+	private boolean showOnlyCurrentProject = false;
+
+	/**
+	 * the name of the current project
+	 */
+	protected String currentProjectName;
+
+	/**
+	 *
+	 * Constructor.
+	 *
+	 * @param parent
+	 * @param style
+	 */
+	public StringWorkspaceFileSelector(Composite parent, int style) {
+		super(parent, style | SWT.READ_ONLY); // the string field is read only
+		super.setReadOnly(readOnly);
+		((GridLayout) getLayout()).numColumns = 5;
+
+		deleteButton = factory.createButton(this, "", SWT.PUSH); //$NON-NLS-1$
+		deleteButton.setImage(org.eclipse.papyrus.infra.widgets.Activator.getDefault().getImage("/icons/Delete_12x12.gif")); //$NON-NLS-1$
+		deleteButton.setLayoutData(new GridData());
+		browseWorkspace = factory.createButton(this, Messages.StringWorkspaceFileSelector_BrowseWorkspace, SWT.PUSH);
+		browseWorkspace.setLayoutData(new GridData());
+
+		filterNames = new LinkedList<>();
+		filterExtensions = new LinkedList<>();
+
+		deleteButton.addSelectionListener(new SelectionListener() {
+
+			@Override
+			public void widgetSelected(SelectionEvent e) {
+				setResult(""); //$NON-NLS-1$
+			}
+
+			@Override
+			public void widgetDefaultSelected(SelectionEvent e) {
+				// Nothing
+			}
+
+		});
+
+		browseWorkspace.addSelectionListener(new SelectionListener() {
+
+			@Override
+			public void widgetSelected(SelectionEvent e) {
+				LabelProviderService labelProviderService = new LabelProviderServiceImpl();
+				try {
+					labelProviderService.startService();
+				} catch (ServiceException ex) {
+					Activator.log.error(ex);
+				}
+
+				ILabelProvider labelProvider = labelProviderService.getLabelProvider();
+
+				IFile currentFile = getIFile(text.getText());
+
+				TreeSelectorDialog dialog = new TreeSelectorDialog(getShell());
+				if (labelText != null) {
+					dialog.setTitle(labelText);
+				}
+
+				WorkspaceContentProvider contentProvider = createWorkspaceContentProvider();
+
+				if (!(filterExtensions.isEmpty() || filterNames.isEmpty())) {
+					// The filters have been defined
+					contentProvider.setExtensionFilters(new LinkedHashMap<String, String>()); // Reset the default filters
+
+					// Use our own filters
+					for (int i = 0; i < Math.min(filterNames.size(), filterExtensions.size()); i++) {
+						contentProvider.addExtensionFilter(filterExtensions.get(i), filterNames.get(i));
+					}
+				}
+
+				dialog.setContentProvider(contentProvider);
+				dialog.setLabelProvider(labelProvider);
+
+
+				if (currentFile != null && currentFile.exists()) {
+					dialog.setInitialSelections(new Object[] { currentFile });
+				}
+
+				int code = dialog.open();
+				if (code == Window.OK) {
+					Object[] result = dialog.getResult();
+					if (result.length > 0) {
+						Object file = result[0];
+						if (file instanceof IFile) {
+							setResult((IFile) file);
+						}
+					}
+				}
+			}
+
+			@Override
+			public void widgetDefaultSelected(SelectionEvent e) {
+				// Nothing
+			}
+
+		});
+	}
+
+	/**
+	 *
+	 * @param path
+	 *            a file path
+	 * @return
+	 *         the IFile corresponding to the path. This method is required to be overridden by others projects if required
+	 */
+	protected IFile getIFile(final String path) {
+		return FileUtil.getIFile(path);
+	}
+
+	/**
+	 *
+	 * @return
+	 *         a new {@link WorkspaceContentProvider}
+	 */
+	protected WorkspaceContentProvider createWorkspaceContentProvider() {
+		if (this.showOnlyCurrentProject && this.currentProjectName != null && !this.currentProjectName.isEmpty()) {
+			return new SingleProjectContentProvider(this.currentProjectName);
+		}
+		return new WorkspaceContentProvider();
+	}
+
+	/**
+	 *
+	 * @param file
+	 *            the selected file
+	 */
+	protected void setResult(IFile file) {
+		setResult(file.getFullPath().toString());
+	}
+
+	/**
+	 *
+	 * @param path
+	 *            the path of the selected file
+	 */
+	protected void setResult(String path) {
+		this.text.setText(path);
+		notifyChange();
+	}
+
+	/**
+	 * Set the filters extension and their name
+	 *
+	 * @param filterExtensions
+	 *            the filters on file extension
+	 * @param filterNames
+	 *            the name of the filters
+	 *
+	 */
+	public void setFilters(String[] filterExtensions, String[] filterNames) {
+		if (filterExtensions.length != filterNames.length) {
+			// This is a simple warning. Only valid filters will be retained.
+			Activator.log.warn("FilterExtensions and FilterNames do not match"); //$NON-NLS-1$
+		}
+
+		setFilterNames(getFilterLabels(filterNames, filterExtensions));
+		setFilterExtensions(filterExtensions);
+	}
+
+	/**
+	 *
+	 * @param filterNames
+	 *            the name of the filters
+	 * @param filterExtensions
+	 *            the filters on file extension
+	 * @return
+	 *         the label to display for each filter
+	 */
+	protected String[] getFilterLabels(String[] filterNames, String[] filterExtensions) {
+		int size = Math.min(filterNames.length, filterExtensions.length);
+		String[] filters = new String[size];
+		for (int i = 0; i < size; i++) {
+			filters[i] = filterNames[i] + " (" + filterExtensions[i] + ")"; //$NON-NLS-1$ //$NON-NLS-2$
+		}
+		return filters;
+	}
+
+	/**
+	 *
+	 * @param filterExtensions
+	 *            the filters on file extension
+	 */
+	public void setFilterExtensions(String[] filterExtensions) {
+		this.filterExtensions = Arrays.asList(filterExtensions);
+	}
+
+	/**
+	 *
+	 * @param filterNames
+	 *            the name of the filters
+	 */
+	public void setFilterNames(String[] filterNames) {
+		this.filterNames = Arrays.asList(filterNames);
+	}
+
+	/**
+	 *
+	 * @param filteredExtension
+	 *            the filter extension
+	 * @param filterName
+	 *            the name of the filter
+	 */
+	public void addFilteredExtension(String filteredExtension, String filterName) {
+		if (filteredExtension != null) {
+			if (filterName == null) {
+				filterName = filteredExtension;
+			}
+
+			filterExtensions.add(filteredExtension);
+			filterNames.add(filterName);
+		}
+	}
+
+	/**
+	 *
+	 * @see org.eclipse.papyrus.infra.widgets.editors.StringEditor#getEditableType()
+	 *
+	 * @return
+	 *         the String type
+	 */
+	@Override
+	public Object getEditableType() {
+		return String.class;
+	}
+
+	/**
+	 *
+	 * @see org.eclipse.papyrus.infra.widgets.editors.StringEditor#setReadOnly(boolean)
+	 *
+	 * @param readOnly
+	 *            boolean indicating if the text field and the button must be read-only or not
+	 */
+	@Override
+	public void setReadOnly(boolean readOnly) {
+		super.setReadOnly(readOnly);
+		this.readOnly = readOnly;
+		updateButtons();
+	}
+
+	/**
+	 * this method update the button status
+	 */
+	private void updateButtons() {
+		this.deleteButton.setEnabled(!readOnly);
+		this.browseWorkspace.setEnabled(!readOnly);
+	}
+
+	/**
+	 *
+	 * @param showOnlyCurrentProject
+	 *            boolean indicating if we want to show only the content of the current project or all workspace project
+	 */
+	public void setShowOnlyCurrentProject(final boolean showOnlyCurrentProject) {
+		this.showOnlyCurrentProject = showOnlyCurrentProject;
+	}
+
+	/**
+	 *
+	 * @param projectName
+	 *            the name of the current project
+	 */
+	public void setProjectName(final String projectName) {
+		this.currentProjectName = projectName;
+	}
+
+}
diff --git a/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/src/org/eclipse/papyrus/infra/widgets/messages/Messages.java b/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/src/org/eclipse/papyrus/infra/widgets/messages/Messages.java
index 62031f8254d..46ba820bd8d 100644
--- a/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/src/org/eclipse/papyrus/infra/widgets/messages/Messages.java
+++ b/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/src/org/eclipse/papyrus/infra/widgets/messages/Messages.java
@@ -1,5 +1,5 @@
 /*****************************************************************************
- * Copyright (c) 2010, 2014 CEA LIST and others.
+ * Copyright (c) 2010, 2014, 2021 CEA LIST and others.
  *
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
@@ -11,7 +11,7 @@
  * Contributors:
  *  Camille Letavernier (CEA LIST) camille.letavernier@cea.fr - Initial API and implementation
  *  Christian W. Damus (CEA) - bug 402525
- *
+ *  Vincent Lorenzo (CEA LIST) vincent.lorenzo@cea.fr - bug 571291
  *****************************************************************************/
 package org.eclipse.papyrus.infra.widgets.messages;
 
@@ -226,6 +226,11 @@ public class Messages extends NLS {
 	public static String StringWithClearEditor_ClearFilter;
 
 	/**
+	 * @since 4.1
+	 */
+	public static String StringWorkspaceFileSelector_BrowseWorkspace;
+
+	/**
 	 * @since 3.0
 	 */
 	public static String BundleIconExplorerDialog_Message;
diff --git a/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/src/org/eclipse/papyrus/infra/widgets/messages/messages.properties b/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/src/org/eclipse/papyrus/infra/widgets/messages/messages.properties
index 0f8b685b2c8..4ea9dd3aebb 100644
--- a/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/src/org/eclipse/papyrus/infra/widgets/messages/messages.properties
+++ b/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/src/org/eclipse/papyrus/infra/widgets/messages/messages.properties
@@ -1,5 +1,5 @@
 ###############################################################################
-# Copyright (c) 2010, 2014 CEA LIST and others.
+# Copyright (c) 2010, 2014, 2021 CEA LIST and others.
 # 
 # All rights reserved. This program and the accompanying materials
 # are made available under the terms of the Eclipse Public License 2.0
@@ -11,7 +11,8 @@
 # Contributors:
 #  Camille Letavernier (CEA LIST) camille.letavernier@cea.fr - Initial API and implementation
 #  Christian W. Damus (CEA) - bug 402525
-#  
+#  Vincent Lorenzo (CEA LIST) vincent.lorenzo@cea.fr - bug 571291
+#
 ###############################################################################
 
 AbstractFilteredContentProvider_CaseSensitiveLabel=Aa
@@ -80,6 +81,7 @@ IntegerMask_ErrorTooManyValues=The mask-based integer editor cannot be used with
 ProviderBasedBrowseStrategy_0=The provider has not been initialized
 
 StringWithClearEditor_ClearFilter=Clear the filter
+StringWorkspaceFileSelector_BrowseWorkspace=Browse Workspace
 BundleIconExplorerDialog_Bundle=Bundle
 BundleIconExplorerDialog_CantFindBundleIdMessage=impossible to find bundle with id: 
 BundleIconExplorerDialog_Message=Please select an icon in the following list
diff --git a/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/src/org/eclipse/papyrus/infra/widgets/providers/SingleProjectContentProvider.java b/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/src/org/eclipse/papyrus/infra/widgets/providers/SingleProjectContentProvider.java
new file mode 100755
index 00000000000..17cfe1ca59a
--- /dev/null
+++ b/plugins/infra/ui/org.eclipse.papyrus.infra.widgets/src/org/eclipse/papyrus/infra/widgets/providers/SingleProjectContentProvider.java
@@ -0,0 +1,75 @@
+/*****************************************************************************
+ * Copyright (c) 2021 CEA LIST.
+ *
+ *
+ * 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:
+ *  Vincent Lorenzo (CEA LIST) vincent.lorenzo@cea.fr - Initial API and implementation
+ *
+ *****************************************************************************/
+package org.eclipse.papyrus.infra.widgets.providers;
+
+import org.eclipse.core.resources.IProject;
+import org.eclipse.core.resources.ResourcesPlugin;
+
+/**
+ *
+ * Workspace Content Provider able to show only the current project
+ *
+ * @since 4.1
+ */
+public class SingleProjectContentProvider extends WorkspaceContentProvider {
+
+	/**
+	 * the name of the project to show
+	 */
+	private String projectName;
+
+	/**
+	 *
+	 * Constructor.
+	 *
+	 * @param projectName
+	 *            the name of the project to show
+	 */
+	public SingleProjectContentProvider(final String projectName) {
+		super();
+		this.projectName = projectName;
+	}
+
+	@Override
+	public Object[] getElements() {
+		// no override required for the initial usecase
+		return super.getElements();
+	}
+
+	/**
+	 *
+	 * @see org.eclipse.papyrus.infra.widgets.providers.EncapsulatedContentProvider#getElements(java.lang.Object)
+	 *
+	 * @param inputElement
+	 * @return
+	 */
+	@Override
+	public Object[] getElements(Object inputElement) {
+		if (projectName != null
+				&& !projectName.isEmpty()
+				&& ResourcesPlugin.getWorkspace() != null
+				&& ResourcesPlugin.getWorkspace().getRoot() != null) {
+			final IProject project = ResourcesPlugin.getWorkspace().getRoot().getProject(this.projectName);
+			if (project != null) {
+				return new Object[] { project };
+			}
+		}
+
+		return super.getElements(inputElement);
+	}
+
+
+}