Example usage for org.eclipse.jdt.internal.core Openable getBuffer

Introduction

In this page you can find the example usage for org.eclipse.jdt.internal.core Openable getBuffer.

Prototype

@Override
public IBuffer getBuffer() throws JavaModelException 

Source Link

Document

Note: a buffer with no unsaved changes can be closed by the Java Model since it has a finite number of buffers allowed open at one time.

Usage

From source file:org.eclipse.ajdt.internal.core.contentassist.ContentAssistProvider.java

License:Open Source License

public boolean doContentAssist(ICompilationUnit cu, ICompilationUnit unitToSkip, int position,
        CompletionRequestor requestor, WorkingCopyOwner owner,
        /* AJDT 1.7 */
        ITypeRoot typeRoot, Openable target, IProgressMonitor monitor) throws Exception {
    JavaProject project = (JavaProject) target.getJavaProject();
    if (!AspectJPlugin.isAJProject(project.getProject())) {
        return false;
    }//  ww  w  .  j av a2 s.c  om
    if (target instanceof AJCompilationUnit) {
        // already handled by the compilation unit
        return false;
    }
    if (!(target instanceof CompilationUnit)) {
        return false;
    }
    IBuffer buffer = target.getBuffer();
    if (buffer == null) {
        return false;
    }

    if (requestor == null) {
        throw new IllegalArgumentException("Completion requestor cannot be null"); //$NON-NLS-1$
    }

    MockCompilationUnit mcu = new MockCompilationUnit((CompilationUnit) target);
    ProposalRequestorWrapper wrapped = new ProposalRequestorWrapper(requestor, mcu, mcu.insertionTable);
    int transformedPos = mcu.translatePositionToFake(position);
    if (transformedPos < -1 || transformedPos > mcu.getContents().length) {
        throw new JavaModelException(new JavaModelStatus(IJavaModelStatusConstants.INDEX_OUT_OF_BOUNDS));
    }

    /* AJDT 1.7 */
    ITDAwareNameEnvironment environment = new ITDAwareNameEnvironment(project, owner, monitor);
    environment.setUnitToSkip(unitToSkip);

    // code complete
    /* AJDT 1.7 */
    CompletionEngine engine = new CompletionEngine(environment, wrapped, project.getOptions(true), project,
            owner, monitor);
    engine.lookupEnvironment = new ITDAwareLookupEnvironment(engine.lookupEnvironment, environment);
    engine.complete(mcu, transformedPos, 0, typeRoot);

    return true;
}

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