com.mentor.nucleus.bp.ui.graphics.actions.SetFontAction.java Source code

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Here is the source code for com.mentor.nucleus.bp.ui.graphics.actions.SetFontAction.java

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//========================================================================
//
//File:      $RCSfile: SetFontAction.java,v $
//Version:   $Revision: 1.4 $
//Modified:  $Date: 2013/01/10 23:05:57 $
//
//Copyright (c) 2005-2014 Mentor Graphics Corporation.  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.ui.graphics.actions;

import java.util.Iterator;

import org.eclipse.gef.GraphicalEditPart;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.widgets.FontDialog;
import org.eclipse.ui.IActionDelegate;
import org.eclipse.ui.PlatformUI;

import com.mentor.nucleus.bp.core.CorePlugin;
import com.mentor.nucleus.bp.core.Ooaofooa;
import com.mentor.nucleus.bp.core.common.ModelRoot;
import com.mentor.nucleus.bp.core.common.Transaction;
import com.mentor.nucleus.bp.core.common.TransactionManager;
import com.mentor.nucleus.bp.ui.canvas.Connector_c;
import com.mentor.nucleus.bp.ui.canvas.Elementstyle_c;
import com.mentor.nucleus.bp.ui.canvas.Fontstyle_c;
import com.mentor.nucleus.bp.ui.canvas.GraphicalElement_c;
import com.mentor.nucleus.bp.ui.canvas.Ooaofgraphics;
import com.mentor.nucleus.bp.ui.canvas.Shape_c;

public class SetFontAction implements IActionDelegate {

    private ISelection selection;

    @Override
    public void run(IAction action) {
        if (selection instanceof IStructuredSelection) {
            // first have the user choose the color
            FontDialog fontDialog = new FontDialog(PlatformUI.getWorkbench().getDisplay().getActiveShell());
            FontData fontData = fontDialog.open();
            if (fontData == null) {
                // user canceled
                return;
            }
            IStructuredSelection ss = (IStructuredSelection) selection;
            // UI guarantees selection type
            // do the following in a transaction for undo/redo support
            TransactionManager manager = TransactionManager.getSingleton();
            Transaction transaction = null;
            try {
                transaction = manager.startTransaction("Set Font Data",
                        new ModelRoot[] { Ooaofooa.getDefaultInstance(), Ooaofgraphics.getDefaultInstance() });
                for (Iterator<?> iterator = ss.iterator(); iterator.hasNext();) {
                    GraphicalEditPart part = (GraphicalEditPart) iterator.next();
                    // fill is enabled for shapes and connectors
                    GraphicalElement_c element = null;
                    if (part.getModel() instanceof Shape_c) {
                        Shape_c shape = (Shape_c) part.getModel();
                        element = GraphicalElement_c.getOneGD_GEOnR2(shape);
                    } else if (part.getModel() instanceof Connector_c) {
                        Connector_c connector = (Connector_c) part.getModel();
                        element = GraphicalElement_c.getOneGD_GEOnR2(connector);
                    }
                    Fontstyle_c fs = Fontstyle_c.getOneSTY_FSOnR400(Elementstyle_c.getOneSTY_SOnR401(element));
                    if (fs == null) {
                        // create fill style and associate with graphic
                        fs = new Fontstyle_c(element.getModelRoot());
                        fs.setFont_identifier(fontData.toString());
                        Elementstyle_c style = new Elementstyle_c(element.getModelRoot());
                        style.relateAcrossR400To(fs);
                        style.relateAcrossR401To(element);
                    } else {
                        fs.setFont_identifier(fontData.toString());
                    }
                }
                manager.endTransaction(transaction);
            } catch (Exception e) {
                if (transaction != null) {
                    manager.cancelTransaction(transaction);
                }
                CorePlugin.logError("Unable to process fill color transaction.", e);
            }
        }
    }

    @Override
    public void selectionChanged(IAction action, ISelection selection) {
        this.selection = selection;
    }

}