com.mentor.nucleus.bp.compare.contentmergeviewer.ModelContentViewer.java Source code

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Here is the source code for com.mentor.nucleus.bp.compare.contentmergeviewer.ModelContentViewer.java

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//=====================================================================
//
//File:      $RCSfile: ModelContentViewer.java,v $
//Version:   $Revision: 1.11 $
//Modified:  $Date: 2013/01/10 22:49:46 $
//
//(c) Copyright 2004-2014 by Mentor Graphics Corp. All rights reserved.
//
//========================================================================
// Licensed under the Apache License, Version 2.0 (the "License"); you may not 
// use this file except in compliance with the License.  You may obtain a copy 
// of the License at
//
//       http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software 
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.   See the 
// License for the specific language governing permissions and limitations under
// the License.
//========================================================================
package com.mentor.nucleus.bp.compare.contentmergeviewer;

import java.util.List;
import java.util.Vector;

import org.eclipse.compare.IStreamContentAccessor;
import org.eclipse.compare.contentmergeviewer.IDocumentRange;
import org.eclipse.compare.contentmergeviewer.TextMergeViewer;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.text.source.SourceViewer;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;

import com.mentor.nucleus.bp.compare.ComparePlugin;
import com.mentor.nucleus.bp.compare.ModelCacheManager;
import com.mentor.nucleus.bp.compare.ModelCacheManager.ModelLoadException;
import com.mentor.nucleus.bp.core.CorePlugin;

public class ModelContentViewer extends Viewer {

    private ModelCacheManager modelManager = ComparePlugin.getDefault().getModelCacheManager();

    private SourceViewer fSourceViewer;
    private List inputs = new Vector();
    Object input;

    ModelContentViewer(Composite parent) {
        fSourceViewer = new SourceViewer(parent, null, SWT.H_SCROLL + SWT.V_SCROLL);
        Control control = fSourceViewer.getTextWidget();
        Font font = JFaceResources.getFont(TextMergeViewer.class.getName());
        control.setFont(font);
        control.addDisposeListener(new DisposeListener() {
            public void widgetDisposed(DisposeEvent e) {
                handleDispose();
            }
        });
        fSourceViewer.setEditable(false);
    }

    public Control getControl() {
        return fSourceViewer.getTextWidget();
    }

    public void setInput(Object aInput) {
        if (aInput != null) {
            inputs.add(aInput);

            input = aInput;
            try {
                IStreamContentAccessor modelText = modelManager.getModel(aInput, this);

                if (modelText instanceof IDocumentRange) {
                    fSourceViewer.setDocument(((IDocumentRange) modelText).getDocument());
                }

            } catch (ModelLoadException e) {
                CorePlugin.showImportErrorMessage(false, e.getMessage());
            }
        }
    }

    public Object getInput() {
        return input;
    }

    public ISelection getSelection() {
        return fSourceViewer.getSelection();
    }

    public void setSelection(ISelection s, boolean reveal) {
        fSourceViewer.setSelection(s, reveal);
    }

    public void refresh() {
        fSourceViewer.refresh();
    }

    protected void handleDispose() {
        for (int i = 0; i < inputs.size(); i++) {
            modelManager.releaseModel(inputs.get(i), this);
        }
        inputs.clear();
    }

}