net.bpelunit.framework.client.eclipse.dialog.field.FileField.java Source code

Introduction

Here is the source code for net.bpelunit.framework.client.eclipse.dialog.field.FileField.java

Source

/**
 * This file belongs to the BPELUnit utility and Eclipse plugin set. See enclosed
 * license file for more information.
 * 
 */
package net.bpelunit.framework.client.eclipse.dialog.field;

import net.bpelunit.framework.client.eclipse.dialog.Field;
import net.bpelunit.framework.client.eclipse.dialog.FieldBasedInputDialog;
import org.eclipse.core.resources.IContainer;
import org.eclipse.core.resources.IProject;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.viewers.ViewerFilter;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.ModifyEvent;
import org.eclipse.swt.events.ModifyListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;
import org.eclipse.ui.dialogs.ISelectionStatusValidator;

/**
 * A field for the {@link FieldBasedInputDialog}. The FileField allows the user to either type in
 * the name of a file, or use the browse button to select a file from the workbench.
 * 
 * @version $Id$
 * @author Philip Mayer
 * 
 */
public class FileField extends Field {

    private Text fText;
    private ViewerFilter fFilter;
    private ISelectionStatusValidator fFileValidator;

    private IProject fRoot;
    private IContainer fCurrentDir;
    protected String fCurrentSelection;

    public FileField(FieldBasedInputDialog inputDialog, String labelText, String initialValue,
            ISelectionStatusValidator validator, ViewerFilter filter, IProject root, IContainer dir) {
        super(inputDialog, labelText, initialValue);
        fRoot = root;
        fFileValidator = validator;
        fFilter = filter;
        fCurrentDir = dir;
    }

    @Override
    protected void createControl(Composite parent) {

        Label label = new Label(parent, SWT.NONE);
        label.setText(getLabelText());
        label.setLayoutData(new GridData(GridData.HORIZONTAL_ALIGN_BEGINNING));

        Composite comp = new Composite(parent, SWT.NONE);
        GridLayout layout = new GridLayout();
        layout.marginHeight = 0;
        layout.marginWidth = 0;
        comp.setLayout(layout);
        comp.setLayoutData(new GridData(GridData.FILL_HORIZONTAL));

        fText = new Text(comp, SWT.SINGLE | SWT.BORDER);
        GridData data = new GridData(GridData.FILL_HORIZONTAL);
        data.widthHint = 200;
        fText.setLayoutData(data);

        // make sure rows are the same height on both panels.
        label.setSize(label.getSize().x, fText.getSize().y);

        if (getInitialValue() != null) {
            fText.setText(getInitialValue());
        }

        fCurrentSelection = fText.getText();

        fText.addModifyListener(new ModifyListener() {
            public void modifyText(ModifyEvent e) {
                fCurrentSelection = fText.getText();
                getDialog().validateFields();
            }
        });

        Button button = createButton(comp, IDialogConstants.IGNORE_ID, "&Browse...", false);
        button.addSelectionListener(new SelectionAdapter() {
            @Override
            public void widgetSelected(SelectionEvent e) {
                String selected = FileSelector.getFile(getDialog().getShell(), fText.getText(), fFileValidator,
                        fFilter, fRoot, fCurrentDir);

                if (selected != null) {
                    fCurrentSelection = fText.getText();
                    fText.setText(selected);
                    getDialog().validateFields();
                }
            }
        });

    }

    @Override
    public String getSelection() {
        return fCurrentSelection;
    }

}