io.github.albertus82.jface.preference.field.DefaultRadioGroupFieldEditor Maven / Gradle / Ivy

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Java SWT/JFace Utility Library including a Preferences Framework, Lightweight HTTP Server and macOS support.

There is a newer version: 20.1.0

package io.github.albertus82.jface.preference.field;

import org.eclipse.jface.preference.RadioGroupFieldEditor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;

import io.github.albertus82.jface.JFaceMessages;

public class DefaultRadioGroupFieldEditor extends RadioGroupFieldEditor implements FieldEditorDefault {

	private final String[][] labelsAndValues;

	private Composite radioBox;

	private boolean defaultToolTip = true;

	public DefaultRadioGroupFieldEditor(final String name, final String labelText, final int numColumns, final String[][] labelsAndValues, final Composite parent) {
		super(name, labelText, numColumns, labelsAndValues, parent);
		this.labelsAndValues = labelsAndValues;
	}

	public DefaultRadioGroupFieldEditor(final String name, final String labelText, final int numColumns, final String[][] labelsAndValues, final Composite parent, final boolean useGroup) {
		super(name, labelText, numColumns, labelsAndValues, parent, useGroup);
		this.labelsAndValues = labelsAndValues;
	}

	@Override
	public Composite getRadioBoxControl(final Composite parent) {
		radioBox = super.getRadioBoxControl(parent);
		return radioBox;
	}

	@Override
	protected void doLoadDefault() {
		if (getDefaultValue() != null && !getDefaultValue().isEmpty()) {
			super.doLoadDefault();
		}
		else {
			selectFirstButton(); // assures that one button is selected
		}
	}

	protected void selectFirstButton() {
		final Control[] children = radioBox.getChildren();
		for (int i = 0; i < children.length; i++) {
			final Control control = children[i];
			if (control instanceof Button) {
				final Button button = (Button) control;
				if (i == 0) {
					button.setSelection(true);
					button.notifyListeners(SWT.Selection, null);
				}
				else {
					button.setSelection(false);
				}
			}
		}
	}

	@Override
	protected void doLoad() {
		super.doLoad();
		setToolTipText();
	}

	protected String getDefaultValue() {
		return getPreferenceStore().getDefaultString(getPreferenceName());
	}

	protected String getNameForValue(final String value) {
		for (int i = 0; i < labelsAndValues.length; i++) {
			final String[] entry = labelsAndValues[i];
			if (value.equals(entry[1])) {
				return entry[0];
			}
		}
		return labelsAndValues[0][0];
	}

	protected void setToolTipText() {
		if (defaultToolTip && getDefaultValue() != null && !getDefaultValue().isEmpty()) {
			final String defaultValue = getNameForValue(getDefaultValue());
			if (radioBox != null && !radioBox.isDisposed() && defaultValue != null && !defaultValue.isEmpty()) {
				radioBox.setToolTipText(JFaceMessages.get("lbl.preferences.default.value", defaultValue));
			}
		}
	}

	protected String[][] getLabelsAndValues() {
		return labelsAndValues;
	}

	protected Composite getRadioBox() {
		return radioBox;
	}

	@Override
	public boolean isDefaultToolTip() {
		return defaultToolTip;
	}

	@Override
	public void setDefaultToolTip(final boolean defaultToolTip) {
		this.defaultToolTip = defaultToolTip;
	}

	@Override
	public boolean isBoldCustomValues() {
		return false;
	}

	@Override
	public void setBoldCustomValues(final boolean boldCustomValues) {
		// Radio values cannot be formatted.
	}

}