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/*
* (c) Copyright IBM Corp. 2000, 2001.
* All Rights Reserved.
*/
package org.eclipse.compare.internal;
import org.eclipse.swt.graphics.Image;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.compare.*;
import org.eclipse.compare.structuremergeviewer.*;
import org.eclipse.compare.contentmergeviewer.IMergeViewerContentProvider;
/**
* Adapts any <code>ContentMergeViewer</code> to work on an <code>ICompareInput</code>
* e.g. a <code>DiffNode</code>.
*/
public class MergeViewerContentProvider implements IMergeViewerContentProvider {
private CompareConfiguration fCompareConfiguration;
public MergeViewerContentProvider(CompareConfiguration cc) {
fCompareConfiguration= cc;
}
public void dispose() {
}
public void inputChanged(Viewer v, Object o1, Object o2) {
// we are not interested since we have no state
}
//---- ancestor
public String getAncestorLabel(Object element) {
return fCompareConfiguration.getAncestorLabel(element);
}
public Image getAncestorImage(Object element) {
return fCompareConfiguration.getAncestorImage(element);
}
public Object getAncestorContent(Object element) {
if (element instanceof ICompareInput)
return ((ICompareInput) element).getAncestor();
return null;
}
public boolean showAncestor(Object element) {
if (element instanceof ICompareInput)
return (((ICompareInput)element).getKind() & Differencer.DIRECTION_MASK) == Differencer.CONFLICTING;
return false;
}
//---- left
public String getLeftLabel(Object element) {
return fCompareConfiguration.getLeftLabel(element);
}
public Image getLeftImage(Object element) {
return fCompareConfiguration.getLeftImage(element);
}
public Object getLeftContent(Object element) {
if (element instanceof ICompareInput)
return ((ICompareInput) element).getLeft();
return null;
}
public boolean isLeftEditable(Object element) {
if (element instanceof ICompareInput) {
Object left= ((ICompareInput) element).getLeft();
if (left == null) {
IDiffElement parent= ((IDiffElement)element).getParent();
if (parent instanceof ICompareInput)
left= ((ICompareInput) parent).getLeft();
}
if (left instanceof IEditableContent)
return ((IEditableContent)left).isEditable();
}
return false;
}
public void saveLeftContent(Object element, byte[] bytes) {
if (element instanceof ICompareInput) {
ICompareInput node= (ICompareInput) element;
if (bytes != null) {
ITypedElement left= node.getLeft();
// #9869: problem if left is null (because no resource exists yet) nothing is done!
if (left == null) {
node.copy(false);
left= node.getLeft();
}
if (left instanceof IEditableContent)
((IEditableContent)left).setContent(bytes);
if (node instanceof ResourceCompareInput.MyDiffNode)
((ResourceCompareInput.MyDiffNode)node).fireChange();
} else {
node.copy(false);
}
}
}
//---- right
public String getRightLabel(Object element) {
return fCompareConfiguration.getRightLabel(element);
}
public Image getRightImage(Object element) {
return fCompareConfiguration.getRightImage(element);
}
public Object getRightContent(Object element) {
if (element instanceof ICompareInput)
return ((ICompareInput) element).getRight();
return null;
}
public boolean isRightEditable(Object element) {
if (element instanceof ICompareInput) {
Object right= ((ICompareInput) element).getRight();
if (right == null) {
IDiffContainer parent= ((IDiffElement)element).getParent();
if (parent instanceof ICompareInput)
right= ((ICompareInput) parent).getRight();
}
if (right instanceof IEditableContent)
return ((IEditableContent)right).isEditable();
}
return false;
}
public void saveRightContent(Object element, byte[] bytes) {
if (element instanceof ICompareInput) {
ICompareInput node= (ICompareInput) element;
if (bytes != null) {
ITypedElement right= node.getRight();
// #9869: problem if right is null (because no resource exists yet) nothing is done!
if (right == null) {
node.copy(true);
right= node.getRight();
}
if (right instanceof IEditableContent)
((IEditableContent)right).setContent(bytes);
if (node instanceof ResourceCompareInput.MyDiffNode)
((ResourceCompareInput.MyDiffNode)node).fireChange();
} else {
node.copy(true);
}
}
}
}
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