/*******************************************************************************
 * Copyright (c) 2000, 2004 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.eclipse.ui.examples.readmetool;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IMarker;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.text.BadLocationException;
import org.eclipse.jface.text.IDocument;
import org.eclipse.ui.IEditorPart;
import org.eclipse.ui.IFileEditorInput;
import org.eclipse.ui.IMarkerResolution;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PartInitException;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.ide.IDE;
import org.eclipse.ui.part.FileEditorInput;

/**
 * A resolution which inserts a sentence into the readme file 
 */
public class AddSentenceResolution implements IMarkerResolution {
    /* (non-Javadoc)
     * Method declared on IMarkerResolution.
     */
    public String getLabel() {
        return MessageUtil.getString("Add_Sentence"); //$NON-NLS-1$
    }

    /* (non-Javadoc)
     * Method declared on IMarkerResolution.
     */
    public void run(IMarker marker) {
        // Se if there is an open editor on the file containing the marker
        IWorkbenchWindow w = PlatformUI.getWorkbench()
                .getActiveWorkbenchWindow();
        if (w == null)
            return;
        IWorkbenchPage page = w.getActivePage();
        if (page == null)
            return;
        IFileEditorInput input = new FileEditorInput((IFile) marker
                .getResource());
        IEditorPart editorPart = page.findEditor(input);

        if (editorPart == null) {
            // open an editor
            try {
                editorPart = IDE.openEditor(page, (IFile) marker.getResource(),
                        true);
            } catch (PartInitException e) {
                MessageDialog.openError(w.getShell(), MessageUtil
                        .getString("Resolution_Error"), //$NON-NLS-1$
                        MessageUtil.getString("Unable_to_open_file_editor")); //$NON-NLS-1$
            }
        }
        if (editorPart == null || !(editorPart instanceof ReadmeEditor))
            return;
        // insert the sentence
        ReadmeEditor editor = (ReadmeEditor) editorPart;
        IDocument doc = editor.getDocumentProvider().getDocument(
                editor.getEditorInput());
        String s = MessageUtil.getString("Simple_sentence"); //$NON-NLS-1$
        try {
            doc.replace(marker.getAttribute(IMarker.CHAR_START, -1), 0, s);
        } catch (BadLocationException e) {
            // ignore
            return;
        }
        // delete the marker
        try {
            marker.delete();
        } catch (CoreException e) {
            e.printStackTrace();
            // ignore
        }

    }

}