/**
* This method inserts our proposal - jar library - into classpath.
*
* @param document see super method.
* @see
* org.eclipse.jface.text.contentassist.ICompletionProposal#apply(org.eclipse.jface.text.IDocument)
*/
public void apply(final IDocument document) {
final IJavaProject project = context.getCompilationUnit().getJavaProject();
final Shell shell = PerclipseActivator.getActivePage().getWorkbenchWindow().getShell();
try {
IClasspathEntry entry = null;
if (isPerfidix) {
entry = BuildPathSupport.getPerfidixClasspathEntry();
}
if (entry != null) {
addToClasspath(shell, project, entry, new BusyIndicatorRunnableContext());
}
final int offset = context.getSelectionOffset();
final int length = context.getSelectionLength();
String str;
str = document.get(offset, length);
document.replace(offset, length, str);
} catch (BadLocationException e) {
PerclipseActivator.log(e);
} catch (JavaModelException e) {
PerclipseActivator.log(e);
}
}
/**
* This method inserts our jar library into the corresponding classpath.
*
* @param shell The corresponding shell of the plug-in.
* @param project The project where the proposal should work.
* @param entry The classpath entry of our library.
* @param context The context of the selection.
* @return The result of this process, if the library has been successful added.
* @throws JavaModelException
*/
private static boolean addToClasspath(
final Shell shell,
final IJavaProject project,
final IClasspathEntry entry,
final IRunnableContext context)
throws JavaModelException {
boolean returnValue = false;
boolean goAhead = true;
final IClasspathEntry[] oldEntries = project.getRawClasspath();
final ArrayList<IClasspathEntry> newEntries =
new ArrayList<IClasspathEntry>(oldEntries.length + 1);
final boolean added = false;
for (int i = 0; i < oldEntries.length; i++) {
IClasspathEntry current = oldEntries[i];
if (current.getEntryKind() == IClasspathEntry.CPE_CONTAINER) {
final IPath path = current.getPath();
if (path.equals(entry.getPath())) {
returnValue = true;
goAhead = false;
} else if (path.matchingFirstSegments(entry.getPath()) > 0) {
if (added) {
final IClasspathEntry newEntry = null;
current = newEntry;
} else {
current = entry;
}
}
} else if (current.getEntryKind() == IClasspathEntry.CPE_VARIABLE) {
final IPath path = current.getPath();
if (path.segmentCount() > 0 && PerclipseActivator.PERFIDIX_HOME.equals(path.segment(0))) {
if (added) {
final IClasspathEntry newEntry = null;
current = newEntry;
} else {
current = entry;
}
}
}
if (current != null && goAhead) {
newEntries.add(current);
}
}
if (goAhead) {
if (!added) {
newEntries.add(entry);
}
final IClasspathEntry[] newCPEntries =
newEntries.toArray(new IClasspathEntry[newEntries.size()]);
try {
context.run(
true,
false,
new IRunnableWithProgress() {
public void run(final IProgressMonitor monitor) {
try {
project.setRawClasspath(newCPEntries, monitor);
} catch (JavaModelException e) {
PerclipseActivator.log(e);
}
}
});
returnValue = true;
} catch (InvocationTargetException e) {
PerclipseActivator.log(e);
final Throwable thowi = e.getTargetException();
if (thowi instanceof CoreException) {
ErrorDialog.openError(
shell,
"Add Perfidix library to the build path",
"Cannot Add",
((CoreException) thowi).getStatus());
}
} catch (InterruptedException e) {
PerclipseActivator.log(e);
}
}
return returnValue;
}