org.eclipse.core.runtime.ILog#org.eclipse.ui.texteditor.IDocumentProviderExtension源码实例Demo

private void initializeSourceViewer(final IEditorInput input) {

        final IDocumentProvider documentProvider = getDocumentProvider();
        final IAnnotationModel model = documentProvider.getAnnotationModel(input);
        final IDocument document = documentProvider.getDocument(input);

        if (document != null) {
            fSourceViewer.setDocument(document, model);
            fSourceViewer.setEditable(isEditable());
            fSourceViewer.showAnnotations(model != null);
        }

        if (fElementStateListener instanceof IElementStateListenerExtension) {
            boolean isStateValidated = false;
            if (documentProvider instanceof IDocumentProviderExtension)
                isStateValidated = ((IDocumentProviderExtension) documentProvider).isStateValidated(input);

            final IElementStateListenerExtension extension = (IElementStateListenerExtension) fElementStateListener;
            extension.elementStateValidationChanged(input, isStateValidated);
        }

    }
 

protected void updateState(final IEditorInput input) {
    final IDocumentProvider provider = getDocumentProvider();
    if (provider instanceof IDocumentProviderExtension) {
        final IDocumentProviderExtension extension = (IDocumentProviderExtension) provider;
        try {

            extension.updateStateCache(input);

            if (fSourceViewer != null)
                fSourceViewer.setEditable(isEditable());

        } catch (final CoreException e) {
            ERDiagramActivator.log(e);
        }
    }
}
 

private void initializeSourceViewer(IEditorInput input) {

		IDocumentProvider documentProvider = getDocumentProvider();
		IAnnotationModel model = documentProvider.getAnnotationModel(input);
		IDocument document = documentProvider.getDocument(input);

		if (document != null) {
			fSourceViewer.setDocument(document, model);
			fSourceViewer.setEditable(isEditable());
			fSourceViewer.showAnnotations(model != null);
		}

		if (fElementStateListener instanceof IElementStateListenerExtension) {
			boolean isStateValidated = false;
			if (documentProvider instanceof IDocumentProviderExtension)
				isStateValidated = ((IDocumentProviderExtension) documentProvider)
						.isStateValidated(input);

			IElementStateListenerExtension extension = (IElementStateListenerExtension) fElementStateListener;
			extension.elementStateValidationChanged(input, isStateValidated);
		}

	}
 

protected void updateState(IEditorInput input) {
	IDocumentProvider provider = getDocumentProvider();
	if (provider instanceof IDocumentProviderExtension) {
		IDocumentProviderExtension extension = (IDocumentProviderExtension) provider;
		try {

			extension.updateStateCache(input);

			if (fSourceViewer != null)
				fSourceViewer.setEditable(isEditable());

		} catch (CoreException e) {
			Activator.log(e);
		}
	}
}
 

public boolean isEditable() {
    final IDocumentProvider provider = getDocumentProvider();
    if (provider instanceof IDocumentProviderExtension) {
        final IDocumentProviderExtension extension = (IDocumentProviderExtension) provider;
        return extension.isModifiable(getEditorInput());
    }
    return false;
}
 

protected void validateState(final IEditorInput input) {

        final IDocumentProvider provider = getDocumentProvider();
        if (!(provider instanceof IDocumentProviderExtension))
            return;

        final IDocumentProviderExtension extension = (IDocumentProviderExtension) provider;

        try {

            extension.validateState(input, getSite().getShell());

        } catch (final CoreException x) {
            final IStatus status = x.getStatus();
            if (status == null || status.getSeverity() != IStatus.CANCEL) {
                final Bundle bundle = Platform.getBundle(PlatformUI.PLUGIN_ID);
                final ILog log = Platform.getLog(bundle);
                log.log(x.getStatus());

                final Shell shell = getSite().getShell();
                final String title = "EditorMessages.Editor_error_validateEdit_title";
                final String msg = "EditorMessages.Editor_error_validateEdit_message";
                ErrorDialog.openError(shell, title, msg, x.getStatus());
            }
            return;
        }

        if (fSourceViewer != null)
            fSourceViewer.setEditable(isEditable());

    }
 

@Override
public void run(IAction action) {
	if(editor != null){
		IDocumentProvider provider = editor.getDocumentProvider() ; 
		IDocumentProviderExtension extension= (IDocumentProviderExtension) provider;
		try {
			extension.synchronize(editor.getEditorInput());
		} catch (CoreException e) {
			BonitaStudioLog.error(e) ;
		}
	}
}
 

public boolean isEditable() {
	IDocumentProvider provider = getDocumentProvider();
	if (provider instanceof IDocumentProviderExtension) {
		IDocumentProviderExtension extension = (IDocumentProviderExtension) provider;
		return extension.isModifiable(getEditorInput());
	}
	return false;
}
 

protected void validateState(IEditorInput input) {

		IDocumentProvider provider = getDocumentProvider();
		if (!(provider instanceof IDocumentProviderExtension))
			return;

		IDocumentProviderExtension extension = (IDocumentProviderExtension) provider;

		try {

			extension.validateState(input, getSite().getShell());

		} catch (CoreException x) {
			IStatus status = x.getStatus();
			if (status == null || status.getSeverity() != IStatus.CANCEL) {
				Bundle bundle = Platform.getBundle(PlatformUI.PLUGIN_ID);
				ILog log = Platform.getLog(bundle);
				log.log(x.getStatus());

				Shell shell = getSite().getShell();
				String title = "EditorMessages.Editor_error_validateEdit_title";
				String msg = "EditorMessages.Editor_error_validateEdit_message";
				ErrorDialog.openError(shell, title, msg, x.getStatus());
			}
			return;
		}

		if (fSourceViewer != null)
			fSourceViewer.setEditable(isEditable());

	}
 

/**
 * This code auto-refreshes files that are out of synch when we first open them. This is a bit of a hack that looks
 * to see if it seems we're out of sync and the file isn't open yet. If it is already open, we call super so it pops
 * a dialog asking if you want to update the file contents.
 */
@Override
protected void handleEditorInputChanged()
{
	final IDocumentProvider provider = getDocumentProvider();
	if (provider == null)
	{
		// fix for http://dev.eclipse.org/bugs/show_bug.cgi?id=15066
		close(false);
		return;
	}

	final IEditorInput input = getEditorInput();
	boolean wasActivated = true;
	try
	{
		Field f = AbstractTextEditor.class.getDeclaredField("fHasBeenActivated"); //$NON-NLS-1$
		f.setAccessible(true);
		wasActivated = (Boolean) f.get(this);
	}
	catch (Exception e1)
	{
		// ignore
	}
	if (!wasActivated && !provider.isDeleted(input))
	{
		try
		{
			if (provider instanceof IDocumentProviderExtension)
			{
				IDocumentProviderExtension extension = (IDocumentProviderExtension) provider;
				extension.synchronize(input);
			}
			else
			{
				doSetInput(input);
			}
			return;
		}
		catch (Exception e)
		{
			// ignore
		}
	}
	super.handleEditorInputChanged();
}