/**
* Flush the modified content back to input elements via the content provider. The provided input
* may be the current input of the viewer or it may be the previous input (i.e. this method may be
* called to flush modified content during an input change).
*
* @param input the compare input
* @param monitor a progress monitor or <code>null</code> if the method was call from a place
* where a progress monitor was not available.
* @since 3.3
*/
protected void flushContentOld(Object input, IProgressMonitor monitor) {
// write back modified contents
IMergeViewerContentProvider content = (IMergeViewerContentProvider) getContentProvider();
if (content == null) {
return;
}
boolean leftEmpty = content.getLeftContent(input) == null;
boolean rightEmpty = content.getRightContent(input) == null;
if (getCompareConfiguration().isLeftEditable() && isLeftDirty()) {
byte[] bytes = getContents(true);
if (rightEmpty && bytes != null && bytes.length == 0) bytes = null;
setLeftDirty(false);
content.saveLeftContent(input, bytes);
}
if (getCompareConfiguration().isRightEditable() && isRightDirty()) {
byte[] bytes = getContents(false);
if (leftEmpty && bytes != null && bytes.length == 0) bytes = null;
setRightDirty(false);
content.saveRightContent(input, bytes);
}
}
/**
* Updates the enabled state of the toolbar items.
*
* <p>This method is called whenever the state of the items needs updating.
*
* <p>Subclasses may extend this method, although this is generally not required.
*/
protected void updateToolItems() {
IMergeViewerContentProvider content = getMergeContentProvider();
if (content == null) {
return;
}
Object input = getInput();
if (fCopyLeftToRightAction != null) {
boolean enable = content.isRightEditable(input);
// if (enable && input instanceof ICompareInput) {
// ITypedElement e= ((ICompareInput) input).getLeft();
// if (e == null)
// enable= false;
// }
fCopyLeftToRightAction.setEnabled(enable);
}
if (fCopyRightToLeftAction != null) {
boolean enable = content.isLeftEditable(input);
// if (enable && input instanceof ICompareInput) {
// ITypedElement e= ((ICompareInput) input).getRight();
// if (e == null)
// enable= false;
// }
fCopyRightToLeftAction.setEnabled(enable);
}
}
void flushRightSide(Object input, IProgressMonitor monitor) {
IMergeViewerContentProvider content = (IMergeViewerContentProvider) getContentProvider();
if (content == null) {
return;
}
boolean leftEmpty = content.getLeftContent(input) == null;
if (getCompareConfiguration().isRightEditable() && isRightDirty()) {
byte[] bytes = getContents(false);
if (leftEmpty && bytes != null && bytes.length == 0) bytes = null;
setRightDirty(false);
content.saveRightContent(input, bytes);
}
}
/**
* Updates the headers of the three areas by querying the content provider for a name and image
* for the three sides of the input object.
*
* <p>This method is called whenever the header must be updated.
*
* <p>Subclasses may extend this method, although this is generally not required.
*/
protected void updateHeader() {
IMergeViewerContentProvider content = getMergeContentProvider();
if (content == null) {
return;
}
Object input = getInput();
// Only change a label if there is a new label available
if (fAncestorLabel != null) {
Image ancestorImage = content.getAncestorImage(input);
if (ancestorImage != null) fAncestorLabel.setImage(ancestorImage);
String ancestorLabel = content.getAncestorLabel(input);
if (ancestorLabel != null) fAncestorLabel.setText(TextProcessor.process(ancestorLabel));
}
if (fLeftLabel != null) {
Image leftImage = content.getLeftImage(input);
if (leftImage != null) fLeftLabel.setImage(leftImage);
String leftLabel = content.getLeftLabel(input);
if (leftLabel != null) fLeftLabel.setText(TextProcessor.process(leftLabel));
}
if (fRightLabel != null) {
Image rightImage = content.getRightImage(input);
if (rightImage != null) fRightLabel.setImage(rightImage);
String rightLabel = content.getRightLabel(input);
if (rightLabel != null) fRightLabel.setText(TextProcessor.process(rightLabel));
}
}
private void internalRefresh(Object input) {
IMergeViewerContentProvider content = getMergeContentProvider();
if (content == null) {
return;
}
Object ancestor = content.getAncestorContent(input);
boolean oldFlag = fIsThreeWay;
if (Utilities.isHunk(input)) {
fIsThreeWay = true;
} else if (input instanceof ICompareInput)
fIsThreeWay = (((ICompareInput) input).getKind() & Differencer.DIRECTION_MASK) != 0;
else fIsThreeWay = ancestor != null;
if (fAncestorItem != null) fAncestorItem.setVisible(fIsThreeWay);
if (fAncestorVisible && oldFlag != fIsThreeWay) fComposite.layout(true);
Object left = content.getLeftContent(input);
Object right = content.getRightContent(input);
updateContent(ancestor, left, right);
// https://bugs.eclipse.org/bugs/show_bug.cgi?id=453799
// Content provider may be disposed after call to updateContent()
content = getMergeContentProvider();
if (content == null) {
return;
}
updateHeader();
ToolBarManager tbm = CompareViewerPane.getToolBarManager(fComposite.getParent());
if (tbm != null) {
updateToolItems();
tbm.update(true);
tbm.getControl().getParent().layout(true);
}
}
