@Override
public String getColumnText(final Object elem, final int columnIndex) {
String result = null;
if (elem instanceof CabalImplementation) {
CabalImplementation impl = (CabalImplementation) elem;
switch (columnIndex) {
case 0:
{
result = impl.getUserIdentifier();
break;
}
case 1:
result = impl.getInstallVersion();
break;
case 2:
result = impl.getLibraryVersion();
break;
case 3:
{
result = impl.getCabalExecutableName().toOSString();
break;
}
}
} else {
result = elem.toString();
}
return result;
}
private void update(final String identifier, final CabalImplementation theImpl) {
CabalImplementation impl = findImplementation(identifier);
if (impl != null) {
// Update the fields.
impl.copy(theImpl);
}
}
@Override
public int compare(final Viewer viewer, final Object e1, final Object e2) {
int result = super.compare(viewer, e1, e2);
if ((e1 instanceof CabalImplementation) && (e2 instanceof CabalImplementation)) {
CabalImplementation left = (CabalImplementation) e1;
CabalImplementation right = (CabalImplementation) e2;
result = left.getLibraryVersion().compareToIgnoreCase(right.getLibraryVersion());
}
return result;
}
private CabalImplementation findImplementation(final String ident) {
CabalImplementation retval = null;
for (CabalImplementation impl : impls) {
if (impl.getUserIdentifier().equals(ident)) {
retval = impl;
break;
}
}
return retval;
}
Composite createControl(final Composite parent, final PreferencePage prefParent) {
Composite composite = new Composite(parent, SWT.NONE);
Font parentFont = parent.getFont();
GridLayout glayout = new GridLayout(2, false);
glayout.marginHeight = 0;
glayout.marginWidth = 0;
composite.setLayout(glayout);
composite.setFont(parentFont);
Label tableLabel = new Label(composite, SWT.NONE);
tableLabel.setText(UITexts.cabalImplsBlock_installed);
GridData gdata = new GridData(SWT.FILL, SWT.TOP, true, false);
gdata.horizontalSpan = 2;
tableLabel.setLayoutData(gdata);
tableLabel.setFont(parentFont);
Composite tableComposite = new Composite(composite, SWT.NONE);
tableComposite.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));
table = SWTUtil.createTable(tableComposite);
createColumns(tableComposite);
createViewer();
// Deep copy the implementations, replace them later.
CabalImplementationManager cMgr = CabalImplementationManager.getInstance();
impls.clear();
for (CabalImplementation impl : cMgr.getCabalImplementations()) {
impls.add(new CabalImplementation(impl));
}
viewer.setInput(impls);
// And set the current default (checked) implementation
CabalImplementation defImpl = cMgr.getDefaultCabalImplementation();
if (defImpl != null) {
CabalImplementation impl = findImplementation(defImpl.getUserIdentifier());
setCheckedCabalImplementation(impl);
}
Composite buttonsComp = new Composite(composite, SWT.NONE);
glayout = new GridLayout(1, true);
glayout.marginHeight = 0;
glayout.marginWidth = 0;
buttonsComp.setLayout(glayout);
buttonsComp.setLayoutData(new GridData(SWT.CENTER, SWT.TOP, false, false));
buttonsComp.setFont(parentFont);
createButtons(buttonsComp);
enableButtons();
return composite;
}
@Override
public int compare(final Viewer viewer, final Object e1, final Object e2) {
int result = super.compare(viewer, e1, e2);
if ((e1 instanceof CabalImplementation) && (e2 instanceof CabalImplementation)) {
CabalImplementation left = (CabalImplementation) e1;
CabalImplementation right = (CabalImplementation) e2;
String pathLeft = left.getCabalExecutableName().toOSString();
String pathRight = right.getCabalExecutableName().toOSString();
result = pathLeft.compareToIgnoreCase(pathRight);
}
return result;
}
/** Put the Cabal implementation preferences into the preference store. */
public boolean updateCabalImplementations() {
CabalImplementationManager cMgr = CabalImplementationManager.getInstance();
Object[] selected = viewer.getCheckedElements();
CabalImplementation impl = (CabalImplementation) selected[0];
String defaultImplIdent = new String();
if (impl != null) {
defaultImplIdent = impl.getUserIdentifier();
}
cMgr.setCabalImplementations(impls, defaultImplIdent);
return true;
}
private void editCabalImplementation() {
IStructuredSelection prev = (IStructuredSelection) getSelection();
int selected = table.getSelectionIndex();
if (selected >= 0) {
CabalImplementation impl = impls.get(selected);
String implIdent = impl.getUserIdentifier();
CabalImplementationDialog dialog = new CabalImplementationDialog(table.getShell(), impl);
dialog.setTitle(UITexts.cabalImplsBlock_dlgEdit);
if (dialog.open() == Window.OK) {
CabalImplementation updatedImpl = dialog.getResult();
if (validateImpl(updatedImpl)) {
update(implIdent, updatedImpl);
setCheckedCabalImplementation(updatedImpl.getUserIdentifier());
viewer.setInput(impl);
}
viewer.refresh();
autoSelectSingle(prev);
}
}
}
private boolean validateImpl(final CabalImplementation impl) {
return (impl != null)
&& CabalImplementationManager.isUniqueUserIdentifier(impl.getUserIdentifier(), impls);
}
