net.refractions.udig.ui.preferences.CharSetFieldEditor.java Source code

Introduction

Here is the source code for net.refractions.udig.ui.preferences.CharSetFieldEditor.java

Source

/* uDig - User Friendly Desktop Internet GIS client
 * http://udig.refractions.net
 * (C) 2004, Refractions Research Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation;
 * version 2.1 of the License.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 */
package net.refractions.udig.ui.preferences;

import java.nio.charset.Charset;

import net.refractions.udig.ui.CharsetSelectionDialog;
import net.refractions.udig.ui.internal.Messages;

import org.eclipse.jface.preference.FieldEditor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Text;

public final class CharSetFieldEditor extends FieldEditor {
    private Text text;

    public CharSetFieldEditor(String name, String labelText, Composite parent) {
        super(name, labelText, parent);
    }

    @Override
    public int getNumberOfControls() {
        return 3;
    }

    @Override
    protected void doStore() {
        getPreferenceStore().setValue(getPreferenceName(), text.getText());
    }

    @Override
    protected void doLoadDefault() {
        text.setText(getPreferenceStore().getDefaultString(getPreferenceName()));
    }

    @Override
    protected void doLoad() {
        text.setText(getPreferenceStore().getString(getPreferenceName()));
    }

    @Override
    protected void doFillIntoGrid(final Composite parent, int numColumns) {
        Label label = new Label(parent, SWT.NONE);
        label.setText(getLabelText());
        label.setLayoutData(new GridData());

        text = new Text(parent, SWT.BORDER);
        GridData layout = new GridData(GridData.FILL_HORIZONTAL);
        layout.horizontalSpan = numColumns - 2;
        text.setLayoutData(layout);

        Button button = new Button(parent, SWT.PUSH);
        button.setLayoutData(new GridData());
        button.setText(Messages.CharSetFieldEditor_select);
        button.addListener(SWT.Selection, new Listener() {

            public void handleEvent(Event event) {
                CharsetSelectionDialog dialog = new CharsetSelectionDialog(parent.getShell(), false,
                        text.getText());
                dialog.open();
                text.setText(((Charset) dialog.getFirstResult()).name());
                store();
            }

        });
    }

    @Override
    protected void adjustForNumColumns(int numColumns) {
    }
}