source: trunk/org.modelica.mdt.ui/src/org/modelica/mdt/ui/hover/ModelicaSourceHover.java

/*******************************************************************************
 * Copyright (c) 2000, 2006 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

package org.modelica.mdt.ui.hover;

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Shell;

import org.eclipse.jface.text.IInformationControl;
import org.eclipse.jface.text.IInformationControlCreator;
import org.eclipse.jface.text.IRegion;
import org.eclipse.jface.text.ITextHoverExtension;
import org.eclipse.jface.text.ITextHoverExtension2;
import org.eclipse.jface.text.ITextViewer;
import org.eclipse.jface.text.information.IInformationProviderExtension2;

import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.part.IWorkbenchPartOrientation;
import org.modelica.mdt.core.IModelicaElement;

/**
 * Provides source as hover info for Modelica elements.
 */
public class ModelicaSourceHover extends AbstractModelicaEditorTextHover 
    implements ITextHoverExtension, ITextHoverExtension2, IInformationProviderExtension2 {

    /*
     * @see ModelicaElementHover
     */
    protected String getHoverInfo(IModelicaElement[] result) {
        int nResults= result.length;

        if (nResults > 1)
            return null;

        IModelicaElement curr= result[0];
        return curr.getElementName();
    }


    /*
     * @see org.eclipse.jface.text.ITextHoverExtension#getHoverControlCreator()
     * @since 3.0
     */
    public IInformationControlCreator getHoverControlCreator() {
        return new IInformationControlCreator() {
            public IInformationControl createInformationControl(Shell parent) {
                IEditorPart editor= getEditor(); 
                int shellStyle= SWT.TOOL | SWT.NO_TRIM;
                if (editor instanceof IWorkbenchPartOrientation)
                    shellStyle |= ((IWorkbenchPartOrientation)editor).getOrientation();
                return new SourceViewerInformationControl(parent, shellStyle, SWT.NONE, getTooltipAffordanceString());
            }
        };
    }

    /*
     * @see IInformationProviderExtension2#getInformationPresenterControlCreator()
     * @since 3.0
     */
    public IInformationControlCreator getInformationPresenterControlCreator() {
        return new IInformationControlCreator() {
            public IInformationControl createInformationControl(Shell parent) {
                int style= SWT.V_SCROLL | SWT.H_SCROLL;
                int shellStyle= SWT.RESIZE | SWT.TOOL;
                IEditorPart editor= getEditor(); 
                if (editor instanceof IWorkbenchPartOrientation)
                    shellStyle |= ((IWorkbenchPartOrientation)editor).getOrientation();
                return new SourceViewerInformationControl(parent, shellStyle, style);
            }
        };
    }


    public Object getHoverInfo2(ITextViewer textViewer, IRegion hoverRegion)
    {
        // TODO Auto-generated method stub
        return getHoverInfo(textViewer, hoverRegion);
    }
}