org.eclipse.debug.internal.ui.stringsubstitution.PasswordPrompt.java Source code

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Here is the source code for org.eclipse.debug.internal.ui.stringsubstitution.PasswordPrompt.java

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/*******************************************************************************
 * Copyright (c) 2007 Benjamin Muskalla 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:
 *     Benjamin Muskalla - initial implementation
 *     IBM Canada - review initial contribution and commit
 *******************************************************************************/
package org.eclipse.debug.internal.ui.stringsubstitution;

import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

/**
 * Prompts the user to input a string.  The dialog will use a password text field so all
 * typed characters are hidden on the screen.
 */
public class PasswordPrompt extends PromptingResolver {

    private String returnValue;

    /* (non-Javadoc)
     * @see org.eclipse.debug.internal.ui.stringsubstitution.PromptingResolver#prompt()
     */
    public void prompt() {
        Dialog dialog = new Dialog((Shell) null) {
            private Text text;

            /* (non-Javadoc)
             * @see org.eclipse.jface.dialogs.Dialog#createDialogArea(org.eclipse.swt.widgets.Composite)
             */
            protected Control createDialogArea(Composite parent) {
                // create composite
                Composite composite = (Composite) super.createDialogArea(parent);
                // create message
                if (dialogMessage != null) {
                    Label label = new Label(composite, SWT.WRAP);
                    label.setText(dialogMessage);
                    GridData data = new GridData(GridData.GRAB_HORIZONTAL | GridData.GRAB_VERTICAL
                            | GridData.HORIZONTAL_ALIGN_FILL | GridData.VERTICAL_ALIGN_CENTER);
                    data.widthHint = convertHorizontalDLUsToPixels(IDialogConstants.MINIMUM_MESSAGE_AREA_WIDTH);
                    label.setLayoutData(data);
                    label.setFont(parent.getFont());
                }
                text = new Text(composite, SWT.SINGLE | SWT.BORDER | SWT.PASSWORD);
                text.setLayoutData(new GridData(GridData.GRAB_HORIZONTAL | GridData.HORIZONTAL_ALIGN_FILL));
                String value = defaultValue == null ? lastValue : defaultValue;
                if (value != null) {
                    text.setText(value);
                }
                applyDialogFont(composite);
                return composite;
            }

            /* (non-Javadoc)
             * @see org.eclipse.jface.dialogs.Dialog#buttonPressed(int)
             */
            protected void buttonPressed(int buttonId) {
                if (buttonId == IDialogConstants.OK_ID) {
                    returnValue = text.getText();
                } else {
                    returnValue = null;
                }
                super.buttonPressed(buttonId);
            }

            /* (non-Javadoc)
             * @see org.eclipse.jface.window.Window#configureShell(org.eclipse.swt.widgets.Shell)
             */
            protected void configureShell(Shell newShell) {
                super.configureShell(newShell);
                newShell.setText(StringSubstitutionMessages.StringPromptExpander_0);
            }

        };

        int dialogResult = dialog.open();
        if (dialogResult == Window.OK) {
            dialogResultString = returnValue;
        }
    }

}