--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/org.eclipse.jface/src/org/eclipse/jface/preference/FileFieldEditor.d	Sat Mar 14 18:23:29 2009 +0100
@@ -0,0 +1,195 @@
+/*******************************************************************************
+ * Copyright (c) 2000, 2007 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     IBM Corporation - initial API and implementation
+ * Port to the D programming language:
+ *     Frank Benoit <benoit@tionex.de>
+ *******************************************************************************/
+module org.eclipse.jface.preference.FileFieldEditor;
+
+import org.eclipse.jface.preference.StringButtonFieldEditor;
+// import java.io.File;
+
+import org.eclipse.swt.SWT;
+import org.eclipse.swt.widgets.Composite;
+import org.eclipse.swt.widgets.FileDialog;
+import org.eclipse.jface.resource.JFaceResources;
+
+import java.lang.all;
+import java.util.List;
+import java.util.Set;
+import tango.io.FilePath;
+static import tango.io.Path;
+import tango.io.FileSystem;
+
+/**
+ * A field editor for a file path type preference. A standard file
+ * dialog appears when the user presses the change button.
+ */
+public class FileFieldEditor : StringButtonFieldEditor {
+
+    /**
+     * List of legal file extension suffixes, or <code>null</code>
+     * for system defaults.
+     */
+    private String[] extensions = null;
+
+    /**
+     * Indicates whether the path must be absolute;
+     * <code>false</code> by default.
+     */
+    private bool enforceAbsolute = false;
+
+    /**
+     * Creates a new file field editor
+     */
+    protected this() {
+    }
+
+    /**
+     * Creates a file field editor.
+     *
+     * @param name the name of the preference this field editor works on
+     * @param labelText the label text of the field editor
+     * @param parent the parent of the field editor's control
+     */
+    public this(String name, String labelText, Composite parent) {
+        this(name, labelText, false, parent);
+    }
+    
+    /**
+     * Creates a file field editor.
+     *
+     * @param name the name of the preference this field editor works on
+     * @param labelText the label text of the field editor
+     * @param enforceAbsolute <code>true</code> if the file path
+     *  must be absolute, and <code>false</code> otherwise
+     * @param parent the parent of the field editor's control
+     */
+    public this(String name, String labelText, bool enforceAbsolute, Composite parent) {
+        this(name, labelText, enforceAbsolute, VALIDATE_ON_FOCUS_LOST, parent);
+    }
+    /**
+     * Creates a file field editor.
+     * 
+     * @param name the name of the preference this field editor works on
+     * @param labelText the label text of the field editor
+     * @param enforceAbsolute <code>true</code> if the file path
+     *  must be absolute, and <code>false</code> otherwise
+     * @param validationStrategy either {@link StringButtonFieldEditor#VALIDATE_ON_KEY_STROKE}
+     *  to perform on the fly checking, or {@link StringButtonFieldEditor#VALIDATE_ON_FOCUS_LOST}
+     *  (the default) to perform validation only after the text has been typed in
+     * @param parent the parent of the field editor's control.
+     * @since 3.4
+     * @see StringButtonFieldEditor#VALIDATE_ON_KEY_STROKE
+     * @see StringButtonFieldEditor#VALIDATE_ON_FOCUS_LOST
+     */
+    public this(String name, String labelText,
+            bool enforceAbsolute, int validationStrategy, Composite parent) {
+        init(name, labelText);
+        this.enforceAbsolute = enforceAbsolute;
+        setErrorMessage(JFaceResources
+                .getString("FileFieldEditor.errorMessage"));//$NON-NLS-1$
+        setChangeButtonText(JFaceResources.getString("openBrowse"));//$NON-NLS-1$
+        setValidateStrategy(validationStrategy);
+        createControl(parent);
+    }
+
+    /* (non-Javadoc)
+     * Method declared on StringButtonFieldEditor.
+     * Opens the file chooser dialog and returns the selected file.
+     */
+    protected override String changePressed() {
+        auto f = new FilePath(tango.io.Path.standard(getTextControl().getText()));
+        if (!f.exists()) {
+            f = cast(FilePath)null;
+        }
+        auto d = getFile(f);
+        if (d is null) {
+            return null;
+        }
+
+        return FileSystem.toAbsolute( d ).native.toString();
+    }
+
+    /* (non-Javadoc)
+     * Method declared on StringFieldEditor.
+     * Checks whether the text input field specifies an existing file.
+     */
+    protected override bool checkState() {
+
+        String msg = null;
+
+        String path = getTextControl().getText();
+        if (path !is null) {
+            path = path.trim();
+        } else {
+            path = "";//$NON-NLS-1$
+        }
+        if (path.length is 0) {
+            if (!isEmptyStringAllowed()) {
+                msg = getErrorMessage();
+            }
+        } else {
+            auto file = new FilePath(tango.io.Path.standard(path));
+            if (/+file.isFile()+/ file.exists && !file.isFolder ) {
+                if (enforceAbsolute && !file.isAbsolute()) {
+                    msg = JFaceResources
+                            .getString("FileFieldEditor.errorMessage2");//$NON-NLS-1$
+                }
+            } else {
+                msg = getErrorMessage();
+            }
+        }
+
+        if (msg !is null) { // error
+            showErrorMessage(msg);
+            return false;
+        }
+
+        // OK!
+        clearErrorMessage();
+        return true;
+    }
+
+    /**
+     * Helper to open the file chooser dialog.
+     * @param startingDirectory the directory to open the dialog on.
+     * @return File The File the user selected or <code>null</code> if they
+     * do not.
+     */
+    private FilePath getFile(FilePath startingDirectory) {
+
+        FileDialog dialog = new FileDialog(getShell(), SWT.OPEN);
+        if (startingDirectory !is null) {
+            dialog.setFileName(startingDirectory.path());
+        }
+        if (extensions !is null) {
+            dialog.setFilterExtensions(extensions);
+        }
+        String file = dialog.open();
+        if (file !is null) {
+            file = file.trim();
+            if (file.length > 0) {
+                return new FilePath(tango.io.Path.standard(file));
+            }
+        }
+
+        return null;
+    }
+
+    /**
+     * Sets this file field editor's file extension filter.
+     *
+     * @param extensions a list of file extension, or <code>null</code>
+     * to set the filter to the system's default value
+     */
+    public void setFileExtensions(String[] extensions) {
+        this.extensions = extensions;
+    }
+}