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/*******************************************************************************
* Copyright (c) 2008, 2010 QNX Software Systems and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* QNX Software Systems - Initial API and implementation
*******************************************************************************/
package org.eclipse.cdt.debug.ui.preferences;
import org.eclipse.cdt.debug.ui.breakpoints.ICBreakpointsUIContribution;
import org.eclipse.cdt.debug.ui.breakpoints.ICBreakpointsUIContributionUser;
import org.eclipse.jface.preference.FieldEditor;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
/**
* @since 7.0
*/
public class ReadOnlyFieldEditor extends FieldEditor implements ICBreakpointsUIContributionUser {
protected Label textField;
protected ICBreakpointsUIContribution contribution;
public ReadOnlyFieldEditor(String name, String labelText, Composite parent) {
init(name, labelText);
createControl(parent);
}
/* (non-Javadoc)
* Method declared on FieldEditor.
*/
@Override
protected void adjustForNumColumns(int numColumns) {
GridData gd = (GridData) textField.getLayoutData();
gd.horizontalSpan = numColumns - 1;
// We only grab excess space if we have to
// If another field editor has more columns then
// we assume it is setting the width.
gd.grabExcessHorizontalSpace = gd.horizontalSpan == 1;
}
/**
* Fills this field editor's basic controls into the given parent.
* <p>
* The string field implementation of this <code>FieldEditor</code>
* framework method contributes the text field. Subclasses may override
* but must call <code>super.doFillIntoGrid</code>.
* </p>
*/
@Override
protected void doFillIntoGrid(Composite parent, int numColumns) {
getLabelControl(parent);
textField = getTextControl(parent);
GridData gd = new GridData();
gd.horizontalSpan = numColumns - 1;
gd.horizontalAlignment = GridData.FILL;
gd.grabExcessHorizontalSpace = true;
textField.setLayoutData(gd);
}
/* (non-Javadoc)
* Method declared on FieldEditor.
*/
@Override
protected void doLoad() {
if (textField != null) {
String value = getPreferenceStore().getString(getPreferenceName());
if (contribution!=null) {
String tryValue = contribution.getLabelForValue(value);
if (tryValue!=null)
value = tryValue;
}
textField.setText(value);
}
}
/* (non-Javadoc)
* Method declared on FieldEditor.
*/
@Override
protected void doLoadDefault() {
if (textField != null) {
String value = getPreferenceStore().getDefaultString(getPreferenceName());
textField.setText(value);
}
}
/* (non-Javadoc)
* Method declared on FieldEditor.
*/
@Override
public int getNumberOfControls() {
return 2;
}
/**
* Returns the field editor's value.
*
* @return the current value
*/
public String getStringValue() {
if (textField != null) {
return textField.getText();
}
return getPreferenceStore().getString(getPreferenceName());
}
/**
* Returns this field editor's text control.
*
* @return the text control, or <code>null</code> if no
* text field is created yet
*/
protected Label getTextControl() {
return textField;
}
/**
* Returns this field editor's text control.
* <p>
* The control is created if it does not yet exist
* </p>
*
* @param parent the parent
* @return the text control
*/
public Label getTextControl(Composite parent) {
if (textField == null) {
textField = new Label(parent, SWT.WRAP);
textField.setFont(parent.getFont());
textField.addDisposeListener(new DisposeListener() {
@Override
public void widgetDisposed(DisposeEvent event) {
textField = null;
}
});
} else {
checkParent(textField, parent);
}
return textField;
}
/* (non-Javadoc)
* Method declared on FieldEditor.
*/
@Override
public boolean isValid() {
return true;
}
/* (non-Javadoc)
* Method declared on FieldEditor.
*/
@Override
public void setFocus() {
if (textField != null) {
textField.setFocus();
}
}
/*
* @see FieldEditor.setEnabled(boolean,Composite).
*/
@Override
public void setEnabled(boolean enabled, Composite parent) {
super.setEnabled(enabled, parent);
getTextControl(parent).setEnabled(enabled);
}
@Override
protected void doStore() {
// nothing
}
@Override
public ICBreakpointsUIContribution getContribution() {
return contribution;
}
@Override
public void setContribution(ICBreakpointsUIContribution contribution) {
this.contribution = contribution;
}
}
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