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/*******************************************************************************
* Copyright (c) 2014 Elphel, Inc.
* Copyright (c) 2006 Elphel, Inc and Excelsior, LLC.
* This file is a part of VDT plug-in.
* VDT plug-in is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* VDT plug-in 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Additional permission under GNU GPL version 3 section 7:
* If you modify this Program, or any covered work, by linking or combining it
* with Eclipse or Eclipse plugins (or a modified version of those libraries),
* containing parts covered by the terms of EPL/CPL, the licensors of this
* Program grant you additional permission to convey the resulting work.
* {Corresponding Source for a non-source form of such a combination shall
* include the source code for the parts of Eclipse or Eclipse plugins used
* as well as that of the covered work.}
*******************************************************************************/
package com.elphel.vdt.ui.preferences;
import org.eclipse.jface.preference.FieldEditor;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
/**
* A field editor for displaying labels not associated with other widgets.
*/
public class LabelFieldEditor extends FieldEditor {
private Label label;
// All labels can use the same preference name since they don't
// store any preference.
public LabelFieldEditor(Composite parent, String value) {
super("label", value, parent);
}
// Adjusts the field editor to be displayed correctly
// for the given number of columns.
protected void adjustForNumColumns(int numColumns) {
((GridData) label.getLayoutData()).horizontalSpan = numColumns;
}
// Fills the field editor's controls into the given parent.
protected void doFillIntoGrid(Composite parent, int numColumns) {
label = getLabelControl(parent);
GridData gridData = new GridData();
gridData.horizontalSpan = numColumns;
gridData.horizontalAlignment = GridData.FILL;
gridData.grabExcessHorizontalSpace = false;
gridData.verticalAlignment = GridData.CENTER;
gridData.grabExcessVerticalSpace = false;
label.setLayoutData(gridData);
}
// Returns the number of controls in the field editor.
public int getNumberOfControls() {
return 1;
}
// Labels do not persist any preferences, so these methods are empty.
protected void doLoad() {
}
protected void doLoadDefault() {
}
protected void doStore() {
}
} // class LabelFieldEditor