--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/com.nokia.cpp.utils.ui/src/com/nokia/cpp/internal/api/utils/ui/DirectorySelectorWithHistory.java	Fri Apr 03 23:33:03 2009 +0100
@@ -0,0 +1,169 @@
+/*
+* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of the License "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+*
+*/
+package com.nokia.cpp.internal.api.utils.ui;
+
+import org.eclipse.jface.dialogs.IDialogSettings;
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.events.*;
+import org.eclipse.swt.layout.GridData;
+import org.eclipse.swt.layout.GridLayout;
+import org.eclipse.swt.widgets.*;
+
+import com.nokia.cpp.utils.ui.noexport.Messages;
+
+import java.io.File;
+import java.util.*;
+import java.util.List;
+
+/**
+ * A utility class for a directory combo, browse button, and a history.
+ *
+ */
+public class DirectorySelectorWithHistory extends Composite {
+	public interface DirectoryChangeListener {
+		void setDirectory(); 
+	}
+	
+	private static final String RECENT_FS_DIRECTORIES_STORE_BASE = 
+		"com.nokia.sdt.utils.ui.filesystem.browse.history"; //$NON-NLS-1$
+
+	private Combo directoryCombo;
+	private Button chooseButton;
+	private File dir;
+	private java.util.List<String> recentDirectories;
+
+	private List<DirectoryChangeListener> listeners;
+
+	private IDialogSettings settings;
+	private String recentDirectoriesStoreKey;
+	
+	/**
+	 * Create an instance in the parent.
+	 * @param parent parent, which must have a GridLayout.
+	 * @param settings the settings to use to restore/save the directory list
+	 * @param directoryGroup optional subgroup of directories (so that clients can either share
+	 * directory lists or keep private ones), or null for master list
+	 */
+	public DirectorySelectorWithHistory(final Composite parent, IDialogSettings settings, String directoryGroup) {
+		super(parent, SWT.NONE);
+		setLayout(new GridLayout(2, false));
+		
+		this.settings = settings;
+		dir = new File("."); //$NON-NLS-1$
+		this.recentDirectories = new ArrayList<String>();
+		this.listeners = new ArrayList<DirectoryChangeListener>();
+		recentDirectoriesStoreKey = RECENT_FS_DIRECTORIES_STORE_BASE;
+		if (directoryGroup != null)
+			recentDirectoriesStoreKey += "." + directoryGroup; //$NON-NLS-1$
+		
+		
+		directoryCombo = new Combo(this, SWT.BORDER);
+		directoryCombo.setLayoutData(new GridData(SWT.FILL, SWT.CENTER, true, false));
+		directoryCombo.setText(dir.getAbsolutePath());
+		directoryCombo.addFocusListener(new FocusAdapter() {
+			@Override
+			public void focusLost(FocusEvent e) {
+				updateCurrentDirectory();
+			}
+		});
+		directoryCombo.addSelectionListener(new SelectionAdapter() {
+			@Override
+			public void widgetSelected(SelectionEvent e) {
+				updateCurrentDirectory();
+			}
+		});
+		chooseButton = new Button(this, SWT.PUSH);
+		chooseButton.setLayoutData(new GridData(SWT.LEFT, SWT.CENTER, false, false));
+		chooseButton.setText(Messages.getString("DirectorySelectorWithHistory.BrowseLabel")); //$NON-NLS-1$
+		chooseButton.addSelectionListener(new SelectionListener() {
+
+			public void widgetDefaultSelected(SelectionEvent e) {
+			}
+
+			public void widgetSelected(SelectionEvent e) {
+				DirectoryDialog dlg = new DirectoryDialog(parent.getShell());
+				String curPath = directoryCombo.getText(); 
+				if (curPath.length() > 0)
+					dlg.setFilterPath(curPath);
+				else
+					dlg.setFilterPath("."); //$NON-NLS-1$
+				String dir = dlg.open();
+				if (dir != null) {
+					directoryCombo.setText(dir);
+					updateCurrentDirectory();
+				}
+			}
+			
+		});
+
+		restoreDialogSettings();
+
+	}
+	
+	public void addListener(DirectoryChangeListener listener) {
+		if (!listeners.contains(listener))
+			listeners.add(listener);
+	}
+	
+	protected void updateCurrentDirectory() {
+		File newDir = new File(directoryCombo.getText());
+		if (newDir.equals(dir))
+			return;
+		dir = newDir;
+		saveDialogSettings();
+		for (DirectoryChangeListener listener : listeners) {
+			listener.setDirectory();
+		}
+	}
+	
+    private void saveDialogSettings() {
+        if (settings != null) {
+        	// remove the bld.inf file from the stack if it exists
+        	recentDirectories.remove(directoryCombo.getText());
+        	
+        	// add the selected bld.inf file to the top of the stack
+        	recentDirectories.add(0, directoryCombo.getText());
+        	
+        	// keep the stack at 20 strings
+        	if (recentDirectories.size() > 20) {
+        		recentDirectories.remove(20);
+        	}
+        	
+            settings.put(recentDirectoriesStoreKey, recentDirectories.toArray(new String[recentDirectories.size()]));
+        }
+    }
+
+    private void restoreDialogSettings() {
+        if (settings != null) {
+        	String[] files = settings.getArray(recentDirectoriesStoreKey);
+        	if (files != null && files.length > 0) {
+        		recentDirectories.addAll(Arrays.asList(files));
+            	directoryCombo.setItems(files);
+            	directoryCombo.select(0);
+            	dir = new File(directoryCombo.getText());
+            }
+        }
+    }
+
+	/**
+	 * @return
+	 */
+	public File getCurrentDirectory() {
+		return dir;
+	}
+
+}