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/*******************************************************************************
* Copyright (c) 2000, 2004 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jface.text.contentassist;
import org.eclipse.swt.graphics.Image;
import org.eclipse.jface.text.Assert;
/**
* A default implementation of the <code>IContextInformation</code> interface.
*/
public final class ContextInformation implements IContextInformation {
/** The name of the context. */
private final String fContextDisplayString;
/** The information to be displayed. */
private final String fInformationDisplayString;
/** The image to be displayed. */
private final Image fImage;
/**
* Creates a new context information without an image.
*
* @param contextDisplayString the string to be used when presenting the context
* @param informationDisplayString the string to be displayed when presenting the context information
*/
public ContextInformation(String contextDisplayString, String informationDisplayString) {
this(null, contextDisplayString, informationDisplayString);
}
/**
* Creates a new context information with an image.
*
* @param image the image to display when presenting the context information
* @param contextDisplayString the string to be used when presenting the context
* @param informationDisplayString the string to be displayed when presenting the context information,
* may not be <code>null</code>
*/
public ContextInformation(Image image, String contextDisplayString, String informationDisplayString) {
Assert.isNotNull(informationDisplayString);
fImage= image;
fContextDisplayString= contextDisplayString;
fInformationDisplayString= informationDisplayString;
}
/*
* @see IContextInformation#equals(Object)
*/
public boolean equals(Object object) {
if (object instanceof IContextInformation) {
IContextInformation contextInformation= (IContextInformation) object;
boolean equals= fInformationDisplayString.equalsIgnoreCase(contextInformation.getInformationDisplayString());
if (fContextDisplayString != null)
equals= equals && fContextDisplayString.equalsIgnoreCase(contextInformation.getContextDisplayString());
return equals;
}
return false;
}
/*
* @see java.lang.Object#hashCode()
*/
public int hashCode() {
int low= fContextDisplayString != null ? fContextDisplayString.hashCode() : 0;
return (fInformationDisplayString.hashCode() << 16) | low;
}
/*
* @see IContextInformation#getInformationDisplayString()
*/
public String getInformationDisplayString() {
return fInformationDisplayString;
}
/*
* @see IContextInformation#getImage()
*/
public Image getImage() {
return fImage;
}
/*
* @see IContextInformation#getContextDisplayString()
*/
public String getContextDisplayString() {
if (fContextDisplayString != null)
return fContextDisplayString;
return fInformationDisplayString;
}
}
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