org.eclipse.buckminster.ui.prefs.NestedFieldEditor.java Source code

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Here is the source code for org.eclipse.buckminster.ui.prefs.NestedFieldEditor.java

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/*****************************************************************************
 * Copyright (c) 2006-2013, Cloudsmith Inc.
 * The code, documentation and other materials contained herein have been
 * licensed under the Eclipse Public License - v 1.0 by the copyright holder
 * listed above, as the Initial Contributor under such license. The text of
 * such license is available at www.eclipse.org.
 *****************************************************************************/

package org.eclipse.buckminster.ui.prefs;

import org.eclipse.jface.preference.FieldEditor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Layout;

/**
 * A FieldEditor containing other FieldEditors
 * 
 * @author Thomas Hallgren
 */
public class NestedFieldEditor extends FieldEditor {
    private Composite group;

    private Label label;

    public NestedFieldEditor(String title, Composite parent) {
        init("", title); //$NON-NLS-1$
        createControl(parent);
    }

    public Composite getControl() {
        return group;
    }

    @Override
    public int getNumberOfControls() {
        return 1;
    }

    @Override
    protected void adjustForNumColumns(int numColumns) {
        Layout layout = group.getLayout();
        if (layout instanceof GridLayout) {
            GridLayout gl = (GridLayout) layout;
            gl.numColumns = numColumns;
            gl.marginHeight = 0;
            gl.marginWidth = 0;
            gl.makeColumnsEqualWidth = false;
        }
        GridData gd = (GridData) group.getLayoutData();
        gd.horizontalSpan = numColumns;
        gd = (GridData) label.getLayoutData();
        gd.horizontalSpan = numColumns;
    }

    @Override
    protected void doFillIntoGrid(Composite parent, int numColumns) {
        group = new Composite(parent, SWT.NONE);
        GridLayout layout = new GridLayout();
        layout.numColumns = numColumns;
        layout.marginHeight = 0;
        layout.marginWidth = 0;
        layout.makeColumnsEqualWidth = false;
        group.setLayout(layout);
        group.setLayoutData(new GridData(SWT.FILL, SWT.FILL, false, false, numColumns, 1));
        label = new Label(group, SWT.NONE);
        label.setText(getLabelText());
        label.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, false, numColumns, 1));
    }

    @Override
    protected void doLoad() {
    }

    @Override
    protected void doLoadDefault() {
    }

    @Override
    protected void doStore() {
    }
}