org.eclipse.wst.xml.ui.internal.handlers.CleanupdocumentHandler.java Source code

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Here is the source code for org.eclipse.wst.xml.ui.internal.handlers.CleanupdocumentHandler.java

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/*******************************************************************************
 * Copyright (c) 2008 Standards for Technology in Automotive Retail 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:
 *     David Carver - initial API and implementation - bug 212330 -
 *                    Based off CleanupActionXMLDelegate
 *******************************************************************************/

package org.eclipse.wst.xml.ui.internal.handlers;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.commands.IHandler;
import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.jface.text.ITextSelection;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.custom.BusyIndicator;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.handlers.HandlerUtil;
import org.eclipse.ui.texteditor.ITextEditor;
import org.eclipse.wst.sse.core.StructuredModelManager;
import org.eclipse.wst.sse.core.internal.cleanup.IStructuredCleanupProcessor;
import org.eclipse.wst.sse.core.internal.provisional.IStructuredModel;
import org.eclipse.wst.sse.ui.internal.SSEUIMessages;
import org.eclipse.wst.xml.core.internal.cleanup.CleanupProcessorXML;
import org.eclipse.wst.xml.ui.internal.actions.CleanupDialogXML;

public class CleanupdocumentHandler extends AbstractHandler implements IHandler {
    private IStructuredCleanupProcessor fCleanupProcessor;

    public void dispose() {
        // nulling out just in case
        fCleanupProcessor = null;
    }

    public Object execute(ExecutionEvent event) throws ExecutionException {
        IEditorPart editor = HandlerUtil.getActiveEditor(event);
        ITextEditor textEditor = null;
        if (editor instanceof ITextEditor)
            textEditor = (ITextEditor) editor;
        else {
            Object o = editor.getAdapter(ITextEditor.class);
            if (o != null)
                textEditor = (ITextEditor) o;
        }
        if (textEditor != null) {
            final ITextEditor finalTextEditor = textEditor;
            Dialog cleanupDialog = new CleanupDialogXML(editor.getSite().getShell());
            if (cleanupDialog.open() == Window.OK) {
                // setup runnable
                Runnable runnable = new Runnable() {
                    public void run() {
                        IStructuredCleanupProcessor cleanupProcessor = getCleanupProcessor();
                        if (cleanupProcessor != null) {
                            IStructuredModel model = null;
                            try {
                                model = StructuredModelManager.getModelManager()
                                        .getExistingModelForEdit(finalTextEditor.getDocumentProvider()
                                                .getDocument(finalTextEditor.getEditorInput()));
                                if (model != null) {
                                    cleanupProcessor.cleanupModel(model);
                                }
                            } finally {
                                if (model != null) {
                                    model.releaseFromEdit();
                                }
                            }
                        }
                    }
                };

                // TODO: make independent of 'model'.
                IStructuredModel model = null;
                try {
                    model = StructuredModelManager.getModelManager().getExistingModelForEdit(
                            textEditor.getDocumentProvider().getDocument(textEditor.getEditorInput()));
                    if (model != null) {
                        // begin recording
                        ITextSelection selection = (ITextSelection) textEditor.getSelectionProvider()
                                .getSelection();
                        model.beginRecording(this, SSEUIMessages.Cleanup_Document_UI_,
                                SSEUIMessages.Cleanup_Document_UI_, selection.getOffset(), selection.getLength());

                        // tell the model that we are about to make a big
                        // model change
                        model.aboutToChangeModel();

                        // run
                        BusyIndicator.showWhile(
                                textEditor.getEditorSite().getWorkbenchWindow().getShell().getDisplay(), runnable);
                    }
                } finally {
                    if (model != null) {
                        // tell the model that we are done with the big
                        // model
                        // change
                        model.changedModel();

                        // end recording
                        ITextSelection selection = (ITextSelection) textEditor.getSelectionProvider()
                                .getSelection();
                        model.endRecording(this, selection.getOffset(), selection.getLength());
                        model.releaseFromEdit();
                    }
                }
            }
        }

        return null;
    }

    IStructuredCleanupProcessor getCleanupProcessor() {
        if (fCleanupProcessor == null) {
            fCleanupProcessor = new CleanupProcessorXML();
        }

        return fCleanupProcessor;
    }
}