Example usage for org.eclipse.jdt.internal.core BufferManager addBuffer

Introduction

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

Prototype

protected void addBuffer(IBuffer buffer) 

Source Link

Document

Adds a buffer to the table of open buffers.

Usage

From source file:com.codenvy.ide.ext.java.server.internal.core.ClassFile.java

License:Open Source License

/** Loads the buffer via SourceMapper, and maps it in SourceMapper */
private IBuffer mapSource(SourceMapper mapper, IBinaryType info, IClassFile bufferOwner) {
    char[] contents = mapper.findSource(getType(), info);
    if (contents != null) {
        // create buffer
        IBuffer buffer = BufferManager.createBuffer(bufferOwner);
        if (buffer == null)
            return null;
        BufferManager bufManager = getBufferManager();
        bufManager.addBuffer(buffer);

        // set the buffer source
        if (buffer.getCharacters() == null) {
            buffer.setContents(contents);
        }/* ww w.j a v a  2  s  . co  m*/

        // listen to buffer changes
        buffer.addBufferChangedListener(this);

        // do the source mapping
        mapper.mapSource(getOuterMostEnclosingType(), contents, info);

        return buffer;
    } else {
        // create buffer
        IBuffer buffer = BufferManager.createNullBuffer(bufferOwner);
        if (buffer == null)
            return null;
        BufferManager bufManager = getBufferManager();
        bufManager.addBuffer(buffer);

        // listen to buffer changes
        buffer.addBufferChangedListener(this);
        return buffer;
    }
}

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From source file:com.codenvy.ide.ext.java.server.internal.core.CompilationUnit.java

License:Open Source License

/**
 * @see Openable#openBuffer(org.eclipse.core.runtime.IProgressMonitor, Object)
 *///from   w w  w  . j a v  a 2s  . c om
protected IBuffer openBuffer(IProgressMonitor pm, Object info) throws JavaModelException {

    // create buffer
    BufferManager bufManager = getBufferManager();
    boolean isWorkingCopy = isWorkingCopy();
    IBuffer buffer = isWorkingCopy ? this.owner.createBuffer(this) : BufferManager.createBuffer(this);
    if (buffer == null)
        return null;

    ICompilationUnit original = null;
    boolean mustSetToOriginalContent = false;
    if (isWorkingCopy) {
        // ensure that isOpen() is called outside the bufManager synchronized block
        // see https://bugs.eclipse.org/bugs/show_bug.cgi?id=237772
        mustSetToOriginalContent = !isPrimary()
                && (original = new CompilationUnit((PackageFragment) getParent(), manager, getElementName(),
                        DefaultWorkingCopyOwner.PRIMARY)).isOpen();
    }

    // synchronize to ensure that 2 threads are not putting 2 different buffers at the same time
    // see https://bugs.eclipse.org/bugs/show_bug.cgi?id=146331
    synchronized (bufManager) {
        IBuffer existingBuffer = bufManager.getBuffer(this);
        if (existingBuffer != null)
            return existingBuffer;

        // set the buffer source
        if (buffer.getCharacters() == null) {
            if (isWorkingCopy) {
                if (mustSetToOriginalContent) {
                    buffer.setContents(original.getSource());
                } else {
                    File file = resource();
                    if (file == null || !file.exists()) {
                        // initialize buffer with empty contents
                        buffer.setContents(CharOperation.NO_CHAR);
                    } else {
                        buffer.setContents(Util.getResourceContentsAsCharArray(file));
                    }
                }
            } else {
                File file = resource();
                if (file == null || !file.exists())
                    throw newNotPresentException();
                buffer.setContents(Util.getResourceContentsAsCharArray(file));
            }
        }

        // add buffer to buffer cache
        // note this may cause existing buffers to be removed from the buffer cache, but only primary compilation unit's buffer
        // can be closed, thus no call to a client's IBuffer#close() can be done in this synchronized block.
        bufManager.addBuffer(buffer);

        // listen to buffer changes
        buffer.addBufferChangedListener(this);
    }
    return buffer;
}

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From source file:org.eclipse.jdt.internal.core.CompilationUnit.java

License:Open Source License

/**
 * @see Openable#openBuffer(IProgressMonitor, Object)
 *//* w  w  w .  j a v  a  2s . c o m*/
protected IBuffer openBuffer(IProgressMonitor pm, Object info) throws JavaModelException {

    // create buffer
    BufferManager bufManager = getBufferManager();
    boolean isWorkingCopy = isWorkingCopy();
    IBuffer buffer = isWorkingCopy ? this.owner.createBuffer(this) : BufferManager.createBuffer(this);
    if (buffer == null)
        return null;

    ICompilationUnit original = null;
    boolean mustSetToOriginalContent = false;
    if (isWorkingCopy) {
        // ensure that isOpen() is called outside the bufManager synchronized block
        // see https://bugs.eclipse.org/bugs/show_bug.cgi?id=237772
        // GROOVY start
        /* old {
        mustSetToOriginalContent = !isPrimary() && (original = new CompilationUnit((PackageFragment)getParent(), getElementName(), DefaultWorkingCopyOwner.PRIMARY)).isOpen() ;
        } new */
        mustSetToOriginalContent = !isPrimary()
                && (original = LanguageSupportFactory.newCompilationUnit((PackageFragment) getParent(),
                        getElementName(), DefaultWorkingCopyOwner.PRIMARY)).isOpen();
        // GROOVY end
    }

    // synchronize to ensure that 2 threads are not putting 2 different buffers at the same time
    // see https://bugs.eclipse.org/bugs/show_bug.cgi?id=146331
    synchronized (bufManager) {
        IBuffer existingBuffer = bufManager.getBuffer(this);
        if (existingBuffer != null)
            return existingBuffer;

        // set the buffer source
        if (buffer.getCharacters() == null) {
            if (isWorkingCopy) {
                if (mustSetToOriginalContent) {
                    buffer.setContents(original.getSource());
                } else {
                    IFile file = (IFile) getResource();
                    if (file == null || !file.exists()) {
                        // initialize buffer with empty contents
                        buffer.setContents(CharOperation.NO_CHAR);
                    } else {
                        buffer.setContents(Util.getResourceContentsAsCharArray(file));
                    }
                }
            } else {
                IFile file = (IFile) getResource();
                if (file == null || !file.exists())
                    throw newNotPresentException();
                buffer.setContents(Util.getResourceContentsAsCharArray(file));
            }
        }

        // add buffer to buffer cache
        // note this may cause existing buffers to be removed from the buffer cache, but only primary compilation unit's buffer
        // can be closed, thus no call to a client's IBuffer#close() can be done in this synchronized block.
        bufManager.addBuffer(buffer);

        // listen to buffer changes
        buffer.addBufferChangedListener(this);
    }
    return buffer;
}

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