/*******************************************************************************
* Copyright (C) 2012, Robin Stocker <robin@nibor.org>
*
* 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
*******************************************************************************/
package org.eclipse.egit.ui.internal.components;
import org.eclipse.jface.layout.GridDataFactory;
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.ui.ISharedImages;
import org.eclipse.ui.PlatformUI;
/**
* Warning label that can be completely shown/hidden, depending on whether there
* is a warning to display or not.
*/
public class ToggleableWarningLabel extends Composite {
private Label warningText;
/**
* Constructs the composite. Note that for the toggling to work, its parent
* composite must use a grid layout.
*
* @param parent
* @param style
*/
public ToggleableWarningLabel(Composite parent, int style) {
super(parent, style);
setVisible(false);
setLayout(new GridLayout(2, false));
Label image = new Label(this, SWT.NONE);
GridDataFactory.fillDefaults().align(SWT.BEGINNING, SWT.BEGINNING)
.applyTo(image);
image.setImage(PlatformUI.getWorkbench().getSharedImages()
.getImage(ISharedImages.IMG_OBJS_WARN_TSK));
warningText = new Label(this, SWT.WRAP);
GridDataFactory.fillDefaults().grab(true, true).applyTo(warningText);
}
/**
* Set the warning message and show the label.
*
* @param message
*/
public void showMessage(String message) {
warningText.setText(message);
layout(true);
changeVisibility(true);
}
/**
* Hide the warning label.
*/
public void hideMessage() {
if (getVisible())
changeVisibility(false);
}
private void changeVisibility(boolean visible) {
setVisible(visible);
GridData data = (GridData) getLayoutData();
data.exclude = !visible;
getParent().layout();
}
}