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/*******************************************************************************
* Copyright (c) 2012, 2014 Wind River Systems, Inc. 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tcf.te.launch.core.selection;
import java.util.Arrays;
import org.eclipse.tcf.te.launch.core.selection.interfaces.ISelectionContext;
/**
* Abstract selection context implementation.
*/
public abstract class AbstractSelectionContext implements ISelectionContext {
// The context
protected final Object context;
// The selection context type
protected String type = null;
// The selected objects
private Object[] selections;
// Preferred selection context marker
private boolean isPreferred = false;
/**
* Constructor.
*
* @param The context object.
* @param selections The selected objects or <code>null</code>.
* @param isPreferred <code>True</code> to mark the selection context the preferred context,
* <code>false</code> otherwise.
*/
public AbstractSelectionContext(Object context, Object[] selections, boolean isPreferred) {
this.context = context;
this.selections = selections != null ? selections : new Object[0];
this.isPreferred = isPreferred;
}
/**
* Constructor.
*
* @param The context object.
* @param type The selection context type or <code>null</code>.
* @param selections The selected objects or <code>null</code>.
* @param isPreferred <code>True</code> to mark the selection context the preferred context,
* <code>false</code> otherwise.
*/
public AbstractSelectionContext(Object context, String type, Object[] selections, boolean isPreferred) {
this.context = context;
this.type = type;
this.selections = selections != null ? selections : new Object[0];
this.isPreferred = isPreferred;
}
/* (non-Javadoc)
* @see org.eclipse.tcf.te.launch.core.selection.interfaces.ISelectionContext#getContext()
*/
@Override
public Object getContext() {
return context;
}
/* (non-Javadoc)
* @see org.eclipse.tcf.te.launch.core.selection.interfaces.ISelectionContext#getType()
*/
@Override
public String getType() {
return type;
}
/* (non-Javadoc)
* @see org.eclipse.tcf.te.launch.core.selection.interfaces.ISelectionContext#getSelections()
*/
@Override
public Object[] getSelections() {
return selections;
}
/* (non-Javadoc)
* @see org.eclipse.tcf.te.launch.core.selection.interfaces.ISelectionContext#setIsPreferredContext(boolean)
*/
@Override
public void setIsPreferredContext(boolean isPreferred) {
this.isPreferred = isPreferred;
}
/* (non-Javadoc)
* @see org.eclipse.tcf.te.launch.core.selection.interfaces.ISelectionContext#isPreferredContext()
*/
@Override
public boolean isPreferredContext() {
return isPreferred;
}
/* (non-Javadoc)
* @see java.lang.Object#equals(java.lang.Object)
*/
@Override
public boolean equals(Object obj) {
boolean equals = obj instanceof ISelectionContext;
if (equals) {
ISelectionContext otherContext = (ISelectionContext)obj;
equals &= type == null && otherContext.getType() == null || type != null && type.equals(otherContext.getType());
equals &= isPreferred == otherContext.isPreferredContext();
Object[] otherSelections = otherContext.getSelections();
equals &= selections == null && otherSelections == null || selections != null && otherSelections != null;
int i = 0;
int length = selections != null ? selections.length : -1;
int otherLength = otherSelections != null ? otherSelections.length : -1;
equals &= (length == otherLength);
while (equals && i < length) {
equals &= selections[i] == null && otherSelections[i] == null || selections[i] != null && selections[i].equals(otherSelections[i]);
i++;
}
}
return equals;
}
/* (non-Javadoc)
* @see java.lang.Object#hashCode()
*/
@Override
public int hashCode() {
int hashCode = 0;
if (type != null) {
hashCode ^= type.hashCode() << 8;
}
hashCode ^= Boolean.valueOf(isPreferred).hashCode();
if (selections != null) {
hashCode ^= Arrays.hashCode(selections);
}
return hashCode;
}
/* (non-Javadoc)
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
StringBuffer toString = new StringBuffer();
if (type != null){
toString.append(type);
}
return toString.toString();
}
}
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