EDIT

// $Id$

/**

* Copyright (C) 2007 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.taxeditor.bulkeditor;

import org.eclipse.core.commands.operations.IUndoContext;

import org.eclipse.core.commands.operations.UndoContext;

import org.eclipse.core.runtime.IProgressMonitor;

import org.eclipse.jface.action.IMenuManager;

import org.eclipse.jface.dialogs.MessageDialog;

import org.eclipse.jface.dialogs.MessageDialogWithToggle;

import org.eclipse.jface.preference.IPreferenceStore;

import org.eclipse.jface.text.IDocument;

import org.eclipse.jface.text.ITextSelection;

import org.eclipse.jface.text.TextSelection;

import org.eclipse.jface.text.source.Annotation;

import org.eclipse.jface.text.source.AnnotationModel;

import org.eclipse.jface.text.source.ISourceViewer;

import org.eclipse.jface.text.source.IVerticalRuler;

import org.eclipse.jface.util.IPropertyChangeListener;

import org.eclipse.jface.window.Window;

import org.eclipse.swt.SWT;

import org.eclipse.swt.custom.StyledText;

import org.eclipse.swt.events.MouseAdapter;

import org.eclipse.swt.events.MouseEvent;

import org.eclipse.swt.layout.GridData;

import org.eclipse.swt.layout.GridLayout;

import org.eclipse.swt.widgets.Composite;

import org.eclipse.swt.widgets.Control;

import org.eclipse.ui.IEditorInput;

import org.eclipse.ui.IEditorSite;

import org.eclipse.ui.PartInitException;

import org.eclipse.ui.texteditor.ITextEditorActionConstants;

import eu.etaxonomy.taxeditor.annotatedlineeditor.AnnotatedLineDocumentProvider;

import eu.etaxonomy.taxeditor.annotatedlineeditor.AnnotatedLineEditor;

import eu.etaxonomy.taxeditor.annotatedlineeditor.LineAnnotation;

import eu.etaxonomy.taxeditor.annotatedlineeditor.LineAnnotationModel;

import eu.etaxonomy.taxeditor.bulkeditor.input.AbstractBulkEditorInput;

import eu.etaxonomy.taxeditor.bulkeditor.input.TaxonEditorInput;

import eu.etaxonomy.taxeditor.model.IDerivedUnitFacadePart;

import eu.etaxonomy.taxeditor.model.IDirtyMarkable;

import eu.etaxonomy.taxeditor.model.IPartContentHasDetails;

import eu.etaxonomy.taxeditor.model.IPartContentHasFactualData;

import eu.etaxonomy.taxeditor.model.IPartContentHasMedia;

import eu.etaxonomy.taxeditor.preference.IPreferenceKeys;

import eu.etaxonomy.taxeditor.preference.PreferencesUtil;

import eu.etaxonomy.taxeditor.store.CdmStore;

/**

 * @author p.ciardelli

 * @created 07.07.2009

 * @version 1.0

 */

public class BulkEditor extends AnnotatedLineEditor implements IPartContentHasDetails,

        IDirtyMarkable, IDerivedUnitFacadePart, IPartContentHasFactualData, IPartContentHasMedia {

	/** Constant <code>ID="bulkeditor.editor"</code> */

	public static final String ID = "bulkeditor.editor";

	private boolean isInitialFocus = true;

	private BulkEditorSearch searchBar = null;

	private IPropertyChangeListener markerPreferenceListener;

	private boolean isDirty;

    private IUndoContext undoContext;

	public BulkEditor() {

		super(CdmStore.createConversation());

        undoContext = new UndoContext();

	}

	/** {@inheritDoc} */

	@Override

	protected void initializeEditor() {

		super.initializeEditor();

		/**

		 * see AbstractTextEditor javadoc for explanation of context menu ids

		 */

		setEditorContextMenuId("#BulkEditorContext");

//		setEntityCreatorService(new BulkEditorEntityCreatorService());

		setLineDisplayStrategy(new BulkEditorLineDisplay(this));

		setSourceViewerConfiguration(new BulkEditorViewerConfiguration(lineDisplayStrategy));

	}

	/** {@inheritDoc} */

	@Override

    protected ISourceViewer createSourceViewer(Composite parent,

			IVerticalRuler ruler, int styles) {

		ISourceViewer viewer = super.createSourceViewer(parent, ruler, styles);

		if (getEditorInput().isMergingEnabled()) {

			addToggleMergeCandidateListener(ruler.getControl());

		}

		return viewer;

	}

	/** {@inheritDoc} */

	@Override

	public void init(IEditorSite site, IEditorInput input)

			throws PartInitException {

		if (!(input instanceof AbstractBulkEditorInput)) {

			throw new PartInitException("Invalid Input: Must be BulkEditorInput");

		}

		else{

		    AbstractBulkEditorInput<?> bulkEditorInput = (AbstractBulkEditorInput<?>)input;

		    if(bulkEditorInput.getEntityUuid()!=null){

		        bulkEditorInput.performSearch(new BulkEditorQuery(bulkEditorInput.getEntityUuid().toString(), null));

		    }

		}

		super.init(site, input);

	}

	/** {@inheritDoc} */

	@Override

	public void createPartControl(Composite parent) {

		parent.setLayout(new GridLayout());

		Composite layoutComposite = new Composite(parent, SWT.NONE);

		layoutComposite.setLayout(new GridLayout());

		GridData gridData = new GridData(SWT.FILL, SWT.TOP, true, false);

		layoutComposite.setLayoutData(gridData);

//		layoutComposite.setBackground(Display.getDefault().getSystemColor(SWT.COLOR_BLUE));

		searchBar = new BulkEditorSearch(this, layoutComposite, SWT.NONE);

//		layoutComposite.setBackground(parent.getDisplay().getSystemColor(SWT.COLOR_WIDGET_BACKGROUND));

		super.createPartControl(parent);

		// Set viewer composite to fill grid. Unfortunately it is private and we have to do a little hack here.

		for (Control control : parent.getChildren()) {

			if (control instanceof Composite &&

						!(control.equals(layoutComposite))) {

				control.setLayoutData(new GridData(SWT.FILL, SWT.FILL, true, true));

			}

		}

	}

	/** {@inheritDoc} */

	@Override

	public void dispose() {

		if (markerPreferenceListener != null ) {

			PreferencesUtil.getPreferenceStore().removePropertyChangeListener(markerPreferenceListener);

		}

		super.dispose();

	}

	/** {@inheritDoc} */

	@Override

	public boolean isEditable() {

		return false;

	}

	/** {@inheritDoc} */

	@Override

	public void setFocus() {

	    conversation.bind();

		// TODO find a better place to put this - this dialog should be shown after initial contents of

		//	Editor are displayed

		if (isInitialFocus) {

			displayWarningDialog();

			isInitialFocus = false;

		}

		super.setFocus();

		searchBar.setFocus();

	}

	/**

	 * @return the searchBar

	 */

	public BulkEditorSearch getSearchBar() {

		return searchBar;

	}

	private void displayWarningDialog() {

		IPreferenceStore prefs = PreferencesUtil.getPreferenceStore();

		if (!prefs.getBoolean(IPreferenceKeys.HIDE_BULKEDITOR_INFO)) {

			String msg = "The Bulk Editor allows you to edit objects used to reference other objects, such as names, references, and authors.\n\n" +

							"Any changes you make to an object in the Bulk Editor will be displayed wherever the object is used.\n\n" +

							"For instance, a reference may be displayed with both a name and a descriptive element. If the reference name is changed here, the display of both the name and the descriptive element will be affected.";

			MessageDialogWithToggle dialog = MessageDialogWithToggle.openOkCancelConfirm

												(getSite().getShell(), "Bulk Editor", msg, "Do not show this message again",

														false, null, IPreferenceKeys.HIDE_BULKEDITOR_INFO);

			if (dialog.getReturnCode() == Window.OK) {

				prefs.setValue(IPreferenceKeys.HIDE_BULKEDITOR_INFO, dialog.getToggleState());

			}

		}

	}

	private void addToggleMergeCandidateListener(Control control) {

		control.addMouseListener(new MouseAdapter() {

			@Override

			public void mouseDoubleClick(MouseEvent e) {

				StyledText textWidget = getSourceViewer().getTextWidget();

				int line = textWidget.getLineIndex(e.y);

				toggleMergeCandidateAnnotation(line);

			}

		});

	}

	public void toggleMergeCandidateAnnotation(int line) {

		IDocument document = getSourceViewer().getDocument();

		LineAnnotationModel model =

				(LineAnnotationModel) getSourceViewer().getAnnotationModel();

		if(model != null){

			Annotation annotation = model.getAnnotationAtLine(line, document);

			if (annotation != null) {

				if (annotation.getType().equals(IBulkEditorConstants.TYPE_MERGE_CANDIDATE)) {

					model.changeAnnotationType(

							annotation, LineAnnotation.TYPE_GENERIC);

				} else {

					model.changeAnnotationType(

							annotation, IBulkEditorConstants.TYPE_MERGE_CANDIDATE);

				}

			}

		}

	}

	@Override

	public boolean isDirty() {

	    if(isDirty){

	        return isDirty;

	    }

	    else{

	        return super.isDirty();

	    }

	}

	@Override

    public void forceDirty(){

	    isDirty = true;

	    firePropertyChange(PROP_DIRTY);

	}

   	@Override

	public void doSave(IProgressMonitor progressMonitor) {

	    isDirty = false;

	    super.doSave(progressMonitor);

	    selectFirstItem();

		getSourceViewer().getTextWidget().setFocus();

	}

	/** {@inheritDoc} */

	@Override

    public void changed(Object object) {

//		this.dirty = dirty;

		AnnotatedLineDocumentProvider p = (AnnotatedLineDocumentProvider) getDocumentProvider();

		p.changed(object);

//		firePropertyChange(PROP_DIRTY);

	}

	/** {@inheritDoc} */

	public void performSearch(BulkEditorQuery query) {

		if (query != null) {

			// TODO check if dirty, prompt save

			if (isDirty()) {

				String[] labels = {"Save (and Search)", "Don't save (and Search)","Cancel"};

				MessageDialog dialog =new MessageDialog(getEditorSite().getShell(), "Save changes", null, "You have made changes that must be saved before this query can be executed. Would you like to proceed?", MessageDialog.QUESTION,labels, 0);

				int result = dialog.open();

						//MessageDialog.openQuestion(getEditorSite().getShell(),

						//"Save changes", "You have made changes that must be saved before this query can be executed. Would you like to proceed?");

				if (result == 0) {

					doSave(null);

				} else if (result == 2){

					return;

				}

			}

			//conversation.clear();

			//conversation.commit(true);

			getEditorInput().dispose();

			getEditorInput().bind();

			getEditorInput().performSearch(query);

			refresh();

			selectFirstItem();

			getSourceViewer().getTextWidget().setFocus();

		}

	}

	private void selectFirstItem() {

		ITextSelection selection = new TextSelection(0, 0);

		getSelectionProvider().setSelection(selection);

	}

	public void refresh() {

		if(getDocumentProvider().getAnnotationModel(getEditorInput()) != null){

			((AnnotationModel) getDocumentProvider().getAnnotationModel(getEditorInput())).removeAllAnnotations();

		}

		setInput(getEditorInput());

	}

	/** {@inheritDoc} */

	@Override

	public AbstractBulkEditorInput getEditorInput() {

		return (AbstractBulkEditorInput) super.getEditorInput();

	}

	@Override

    protected void editorContextMenuAboutToShow(IMenuManager menu) {

		super.editorContextMenuAboutToShow(menu);

		menu.remove(ITextEditorActionConstants.SHIFT_RIGHT);

		menu.remove(ITextEditorActionConstants.SHIFT_LEFT);

		menu.remove(ITextEditorActionConstants.CONTEXT_PREFERENCES);

	}

	@Override

	public boolean canAttachMedia() {

	    return getEditorInput() instanceof TaxonEditorInput?true:false;

	}

    public IUndoContext getUndoContext() {

        return undoContext;

    }

}