br.ufmg.dcc.tabuleta.actions.SaveAsAction.java Source code

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Here is the source code for br.ufmg.dcc.tabuleta.actions.SaveAsAction.java

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/* ConcernMapper - A concern modeling plug-in for Eclipse
 * Copyright (C) 2006  McGill University (http://www.cs.mcgill.ca/~martin/cm)
 * 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
 *
 * $Revision: 1.15 $
 */

package br.ufmg.dcc.tabuleta.actions;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IWorkspace;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IPath;
import org.eclipse.jface.action.Action;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Control;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.dialogs.SaveAsDialog;

import br.ufmg.dcc.tabuleta.Tabuleta;
import br.ufmg.dcc.tabuleta.model.io.ModelIOException;
import br.ufmg.dcc.tabuleta.model.io.ModelWriter;
import br.ufmg.dcc.tabuleta.ui.ConcernMapperPreferencePage;
import br.ufmg.dcc.tabuleta.views.T2FMappingView;

/**
 * Saves the concern model to a file.
 */
public class SaveAsAction extends Action {
    private T2FMappingView aView;

    /**
     * @param pView The view containing the action
     */
    public SaveAsAction(T2FMappingView pView) {
        aView = pView;
        setText(Tabuleta.getResourceString("actions.SaveAsAction.Label"));
        setImageDescriptor(Tabuleta.imageDescriptorFromPlugin(Tabuleta.ID_PLUGIN, "icons/saveas.gif"));
        setToolTipText(Tabuleta.getResourceString("actions.SaveAsAction.ToolTip"));
    }

    /**
     * @see org.eclipse.jface.action.IAction#run()
     */
    public void run() {
        IFile lFile = null;

        SaveAsDialog lDialog = new ConcernModelSaveAsDialog(
                PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell());

        IFile lCurrentFile = Tabuleta.getDefault().getDefaultResource();
        if (lCurrentFile != null) {
            lDialog.setOriginalFile(lCurrentFile);
        }
        lDialog.open();

        if (lDialog.getReturnCode() == Window.CANCEL) {
            return;
        }

        IPath lPath = lDialog.getResult();

        lPath = addCMFileExtension(lPath);

        IWorkspace lWorkspace = ResourcesPlugin.getWorkspace();
        lFile = lWorkspace.getRoot().getFile(lPath);

        if (!lFile.exists()) {
            try {
                lFile.create(null, true, null);
            } catch (CoreException lException) {
                MessageDialog.openError(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(),
                        Tabuleta.getResourceString("actions.SaveAsAction.ErrorLabel"),
                        Tabuleta.getResourceString("actions.SaveAsAction.ErrorMessage") + " "
                                + lException.getMessage());
                return;
            }
        }

        try {
            Tabuleta.getDefault().setDefaultResource(lFile);
            ModelWriter lWriter = new ModelWriter(Tabuleta.getDefault().getConcernModel());
            lWriter.write(lFile);
        } catch (ModelIOException lException) {
            MessageDialog.openError(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(),
                    Tabuleta.getResourceString("actions.SaveAsAction.ErrorLabel"),
                    Tabuleta.getResourceString("actions.SaveAsAction.ErrorMessage") + " "
                            + lException.getMessage());
            return;
        }
        Tabuleta.getDefault().resetDirty();
        if (aView != null) {
            aView.updateActionState();
        }
    }

    /**
     * We have to define this class simply to be able to change the title
     * of the dialog.  This is necessary because when the save as functionality
     * kicks in as the result of an autosave the default title is too generic and 
     * users may not directly see that they are saving their concern model.
     */
    /**
     * @author martin
     *
     */
    class ConcernModelSaveAsDialog extends SaveAsDialog {
        /**
         * Creates a new SaveAsDialog for saving concern models.
         * @param pShell The parent shell.
         */
        public ConcernModelSaveAsDialog(Shell pShell) {
            super(pShell);
        }

        /**
         * @see org.eclipse.jface.window.Window#createContents(org.eclipse.swt.widgets.Composite)
         * @param pParent the parent composite for the controls in this window. The type
         *                of layout used is determined by getLayout()
         * @return the control that will be returned by subsequent calls to getControl()
         */
        protected Control createContents(Composite pParent) {
            Control lContents = super.createContents(pParent);

            setTitle(Tabuleta.getResourceString("actions.SaveAsAction.DialogTitle"));
            setMessage(Tabuleta.getResourceString("actions.SaveAsAction.DialogMessage"));

            return lContents;
        }
    }

    private static IPath addCMFileExtension(IPath pPath) {
        IPath lReturn = pPath;
        if (Tabuleta.getDefault().getPreferenceStore().getBoolean(ConcernMapperPreferencePage.P_CM_FILE_EXT)) {
            if (lReturn.getFileExtension() == null) {
                lReturn = lReturn.addFileExtension("cm");
            } else if (!lReturn.getFileExtension().equals("cm")) {
                lReturn = lReturn.removeFileExtension();
                lReturn = lReturn.addFileExtension("cm");
            }
        }
        return lReturn;
    }
}