EDIT

/**

 * 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.editor;

import java.util.ArrayList;

import java.util.List;

import java.util.UUID;

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

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

import org.eclipse.core.runtime.IProgressMonitor;

import org.eclipse.jface.dialogs.MessageDialog;

import org.eclipse.ui.IEditorInput;

import org.eclipse.ui.IEditorPart;

import org.eclipse.ui.IEditorSite;

import org.eclipse.ui.PartInitException;

import org.eclipse.ui.forms.editor.FormEditor;

import eu.etaxonomy.cdm.api.application.CdmApplicationState;

import eu.etaxonomy.cdm.api.application.CdmChangeEvent;

import eu.etaxonomy.cdm.api.application.CdmChangeEvent.Action;

import eu.etaxonomy.cdm.api.conversation.ConversationHolder;

import eu.etaxonomy.cdm.api.conversation.IConversationEnabled;

import eu.etaxonomy.cdm.model.common.CdmBase;

import eu.etaxonomy.cdm.model.name.TaxonNameBase;

import eu.etaxonomy.cdm.model.taxon.Taxon;

import eu.etaxonomy.cdm.model.taxon.TaxonBase;

import eu.etaxonomy.cdm.persistence.hibernate.CdmDataChangeMap;

import eu.etaxonomy.taxeditor.editor.internal.TaxeditorEditorPlugin;

import eu.etaxonomy.taxeditor.editor.name.TaxonNameEditor;

import eu.etaxonomy.taxeditor.editor.name.container.AbstractGroupedContainer;

import eu.etaxonomy.taxeditor.model.AbstractUtility;

import eu.etaxonomy.taxeditor.model.DataChangeBridge;

import eu.etaxonomy.taxeditor.model.IDataChangeBehavior;

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.model.MessagingUtils;

import eu.etaxonomy.taxeditor.operation.IPostOperationEnabled;

/**

 *

 * Generates the tabbed editor with <code>TaxonNameEditor</code> on top and tabs

 * for "Descriptions", "Concepts", "Geography", etc.

 *

 * @author p.ciardelli

 * @author n.hoffmann

 * @created 15.05.2008

 * @version 1.0

 */

public class MultiPageTaxonEditor extends FormEditor implements

IPartContentHasFactualData, IConversationEnabled, IPostOperationEnabled,

IDirtyMarkable, IPartContentHasDetails, ISecuredEditor, IPartContentHasMedia {

    /** Constant <code>ID="eu.etaxonomy.taxeditor.editor.taxon"{trunked}</code> */

    public static final String ID = "eu.etaxonomy.taxeditor.editor.taxon";

    private boolean dirty;

    private ConversationHolder conversation;

    private IDataChangeBehavior dataChangeBehavior;

    private IUndoContext undoContext;

    private TaxonEditorInput input;

    /**

     * <p>

     * Constructor for MultiPageTaxonEditor.

     * </p>

     */

    public MultiPageTaxonEditor() {

        super();

        undoContext = new UndoContext();

    }

    /** {@inheritDoc} */

    @Override

    public void dispose() {

        input.dispose();

        conversation.unregisterForDataStoreChanges(this);

        conversation.close();

        super.dispose();

    }

    /*

     * (non-Javadoc)

     *

     * @see org.eclipse.ui.forms.editor.FormEditor#addPages()

     */

    /** {@inheritDoc} */

    @Override

    protected void addPages() {

        input = (TaxonEditorInput) getEditorInput();

        conversation = input.getConversationHolder();

        conversation.registerForDataStoreChanges(this);

        try {

            addPage(Page.NAME.getIndex(), new TaxonNameEditor(this),

                    getEditorInput());

            // setPageText(Page.NAME.getIndex(), Page.NAME.getTitle());

            // TODO lazy create

            // addPage(Page.DESCRIPTIVE.getIndex(), new

            // TaxonDescriptionTreeEditor(this), getEditorInput());

            // setPageText(Page.DESCRIPTIVE.getIndex(),

            // Page.DESCRIPTIVE.getTitle());

            // EditorUtil.showPropertySheet();

        } catch (PartInitException e) {

            MessagingUtils.error(getClass(), e);

        }

    }

    /** {@inheritDoc} */

    @Override

    public void doSave(IProgressMonitor monitor) {

        monitor.beginTask("Saving Editor", 4);

        try {

            if (!conversation.isBound()) {

                conversation.bind();

            }

            monitor.worked(1);

            for (IEditorPart editorPage : getPages()) {

                if (editorPage instanceof TaxonNameEditor) {

                    if (((TaxonNameEditor) editorPage).checkForEmptyNames()) {

                        MessageDialog.openWarning(AbstractUtility.getShell(), "No Name Specified",

                                "An attempt was made to save a taxon or synonym with "

                                        + "an empty name. Operation was cancelled.");

                        return;

                    }

                }

                editorPage.doSave(monitor);

                monitor.worked(1);

            }

            // commit the conversation and start a new transaction immediately

            input.merge();

            conversation.commit(true);

            CdmApplicationState.getCurrentDataChangeService()

            .fireChangeEvent(new CdmChangeEvent(Action.Update, input.getTaxonNode() , MultiPageTaxonEditor.class), true);

            monitor.worked(1);

            this.setDirty(false);

            monitor.worked(1);

        } catch (Exception e) {

            setFocus();

            MessagingUtils.operationDialog(this, e, TaxeditorEditorPlugin.PLUGIN_ID,"saving a taxon", " Please close and reopen the taxon again.");

            disableEditor(true);

        } finally {

            monitor.done();

        }

    }

    private void disableEditor(boolean isOnError) {

        for (IMultiPageTaxonEditorPage editorPage : getPages()) {

            if(isOnError){

                editorPage.setOnError();

            }else {

                editorPage.setDisabled();

            }

        }

        conversation.unregisterForDataStoreChanges(this);

        conversation.close();

        setDirty(false);

    }

    private void setDirty(boolean dirty) {

        this.dirty = dirty;

        firePropertyChange(PROP_DIRTY);

    }

    /*

     * (non-Javadoc)

     *

     * @see org.eclipse.ui.part.MultiPageEditorPart#isDirty()

     */

    /**

     * <p>

     * isDirty

     * </p>

     *

     * @return a boolean.

     */

    @Override

    public boolean isDirty() {

        return dirty;

    }

    /*

     * (non-Javadoc)

     *

     * @see org.eclipse.ui.forms.editor.FormEditor#editorDirtyStateChanged()

     */

    /** {@inheritDoc} */

    @Override

    public void editorDirtyStateChanged() {

        dirty = true;

        super.editorDirtyStateChanged();

    }

    /**

     * {@inheritDoc}

     *

     * Checks whether nested editors are calling

     * <code>firePropertyChange(PROP_DIRTY)</code> to signal an edit has taken

     * place before passing property change along to

     * <code>super.handlePropertyChange(int propertyId)</code>.

     */

    /*

     * (non-Javadoc)

     *

     * @see org.eclipse.ui.part.MultiPageEditorPart#handlePropertyChange(int)

     */

    @Override

    protected void handlePropertyChange(int propertyId) {

        if (propertyId == PROP_DIRTY) {

            setDirty(true);

        }

        super.handlePropertyChange(propertyId);

    }

    /** {@inheritDoc} */

    @Override

    public void doSaveAs() {

    }

    /** {@inheritDoc} */

    @Override

    public boolean isSaveAsAllowed() {

        return false;

    }

    /** {@inheritDoc} */

    @Override

    public void init(IEditorSite site, IEditorInput input)

            throws PartInitException {

        if (!(input instanceof TaxonEditorInput)) {

            throw new PartInitException(

                    "Invalid Input: Must be TaxonEditorInput");

        }

        this.input = (TaxonEditorInput) input;

        // try {

        // // Listen for name changes,

        // // change tab for this taxon editor accordingly

        // getTaxon().addPropertyChangeListener("name",

        // new PropertyChangeListener() {

        // public void propertyChange(PropertyChangeEvent e) {

        // setPartName();

        // }

        // });

        // } catch (NullPointerException e) {

        // EditorUtil.warn(getClass(),

        // "Caught an NPE while initing an editor. This is most " +

        // "likely due to the unsuccesful attempt to restore the former " +

        // "state of the application. We ignore this because the workbench " +

        // "will simply be reset.");

        // }

        setPartName();

        super.init(site, input);

    }

    /**

     * Calls <code>MultiPageEditorPart.setPartName(String partName)</code> with

     * text appropriate to the state of the taxon: any taxon that has been saved

     * will by necessity have a name to display; a new taxon should display

     * "New taxon" in the editor tab.

     */

    protected void setPartName() {

        String partName = null;

        TaxonNameBase<?, ?> name = getTaxon().getName();

        if (name != null) {

            partName = name.getTitleCache();

        }

        if (partName == null || partName.equals("")) {

            partName = ("New taxon");

        }

        setPartName(partName);

    }

    /**

     * {@inheritDoc}

     *

     * Editor pages call this in their postOperation to notify the

     * MultiPageTaxonEditor of unsaved changes

     */

    @Override

    public void changed(Object element) {

        // setDirty(true);

        // if the attribute is null then do not set the dirty flag -> hotfix for the problem that for tasks done in service methods the changes are saved automatically

        if (element != null){

            dirty = true;

            super.editorDirtyStateChanged();

        }

        if (element instanceof TaxonBase) {

            TaxonNameEditor page = (TaxonNameEditor) getPage(Page.NAME);

            AbstractGroupedContainer container = page.getContainer((TaxonBase) element);

            if (container != null) {

                container.refresh();

            }

        }

        //refresh part title

        //TODO: refresh taxon node in taxon navigator

        setPartName();

    }

    /* (non-Javadoc)

     * @see eu.etaxonomy.taxeditor.model.IDirtyMarkableSelectionProvider#forceDirty()

     */

    @Override

    public void forceDirty() {

        changed(null);

    }

    /**

     * The accepted taxon that is the input for this editor

     *

     * @return the accepted taxon

     */

    public Taxon getTaxon() {

        return input.getTaxon();

    }

    /*

     * (non-Javadoc)

     *

     * @see

     * eu.etaxonomy.cdm.api.conversation.IConversationEnabled#getConversationHolder

     * ()

     */

    /**

     * <p>

     * getConversationHolder

     * </p>

     *

     * @return a {@link eu.etaxonomy.cdm.api.conversation.ConversationHolder}

     *         object.

     */

    @Override

    public ConversationHolder getConversationHolder() {

        return conversation;

    }

    /**

     * <p>

     * setConversationHolder

     * </p>

     *

     * @param conversation

     *            a {@link eu.etaxonomy.cdm.api.conversation.ConversationHolder}

     *            object.

     */

    public void setConversationHolder(ConversationHolder conversation) {

        this.conversation = conversation;

    }

    /**

     * <p>

     * Getter for the field <code>undoContext</code>.

     * </p>

     *

     * @return a {@link org.eclipse.core.commands.operations.IUndoContext}

     *         object.

     */

    public IUndoContext getUndoContext() {

        return undoContext;

    }

    /**

     * <p>

     * Setter for the field <code>undoContext</code>.

     * </p>

     *

     * @param undoContext

     *            a {@link org.eclipse.core.commands.operations.IUndoContext}

     *            object.

     */

    public void setUndoContext(IUndoContext undoContext) {

        this.undoContext = undoContext;

    }

    /** {@inheritDoc} */

    @Override

    public void setFocus() {

        // logger.warn("Setting focus to editor");

        // bind the conversation

        getConversationHolder().bind();

        input.bind();

        // pass focus to the active editor page

        getActiveEditor().setFocus();

    }

    /*

     * (non-Javadoc)

     *

     * @see

     * eu.etaxonomy.cdm.persistence.hibernate.ICdmPostCrudObserver#update(eu

     * .etaxonomy.cdm.persistence.hibernate.CdmCrudEvent)

     */

    /** {@inheritDoc} */

    @Override

    public void update(CdmDataChangeMap events) {

        if (dataChangeBehavior == null) {

            dataChangeBehavior = new MultiPageTaxonEditorDataChangeBehaviour(this);

        }

        DataChangeBridge.handleDataChange(events, dataChangeBehavior);

    }

    /*

     * (non-Javadoc)

     *

     * @see

     * eu.etaxonomy.taxeditor.store.operations.IPostOperationEnabled#postOperation

     * ()

     */

    /** {@inheritDoc} */

    @Override

    public boolean postOperation(CdmBase objectAffectedByOperation) {

    		setDirty(true);

        for (IEditorPart editor : this.getPages()) {

            if (editor instanceof IPostOperationEnabled) {

                ((IPostOperationEnabled) editor).postOperation(objectAffectedByOperation);

            } else {

                MessagingUtils.warn(getClass(), "postOperation not enabled for editor " + editor);

            }

        }

        MessagingUtils.warn(getClass(), "postOperation called on MultiPageTaxonEditor. Can you make it more specific?");

        return false;

    }

    /**

     * Returns an <code>IEditorPart</code> implementation by type

     *

     * @param page

     *            the page type

     * @return a {@link eu.etaxonomy.taxeditor.editor.IMultiPageTaxonEditorPage}

     *         object.

     */

    public IMultiPageTaxonEditorPage getPage(Page page) {

        for (IEditorPart editor : this.getPages()) {

            if (editor.getClass().equals(page.getClazz())) {

                return (IMultiPageTaxonEditorPage) editor;

            }

        }

        return null;

    }

    /**

     * Return a list of <code>AbstractTaxonEditor</code>s registered with this

     * <code>MultiPageTaxonEditor</code>.

     *

     * @return a {@link java.util.List} object.

     */

    public List<IMultiPageTaxonEditorPage> getPages() {

        ArrayList<IMultiPageTaxonEditorPage> editors = new ArrayList<IMultiPageTaxonEditorPage>();

        for (int i = 0; i < this.getPageCount(); i++) {

            editors.add((IMultiPageTaxonEditorPage) this.getEditor(i));

        }

        return editors;

    }

    /**

     * Refreshes a certain page of the MultipageTaxonEditor

     *

     * @param page

     *            a {@link eu.etaxonomy.taxeditor.editor.Page} object.

     * @return a boolean.

     */

    public boolean redraw(Page page) {

        return redraw(page, true);

    }

    /**

     * Refreshes a certain page of the MultipageTaxonEditor and sets focus to

     * that page

     *

     * @param page

     *            a {@link eu.etaxonomy.taxeditor.editor.Page} object.

     * @param focus

     *            a boolean.

     * @return a boolean.

     */

    public boolean redraw(Page page, boolean focus) {

        IMultiPageTaxonEditorPage editorPage = getPage(page);

        return editorPage != null && editorPage.redraw(focus);

    }

    /**

     * <p>

     * onComplete

     * </p>

     *

     * @return a boolean.

     */

    @Override

    public boolean onComplete() {

        return false;

    }

    /**

     * Reloads the data for this

     */

    public void reload() {

        if (isDirty()) {

            MessagingUtils.warningDialog("Editor has unsaved data", getClass(), "This editor can not be "

                    + "refreshed because it contains unsaved data. Refreshing "

                    + "this editor would discard the changes. Please save this editor, "

                    + "close and reopen it manually in order to get the latest content");

        } else {

            TaxonEditorInput input = (TaxonEditorInput) getEditorInput();

            UUID uuid = input.getTaxonNode().getUuid();

            conversation.clear();

            try {

                TaxonEditorInput newInput = TaxonEditorInput.NewInstance(uuid);

                setInput(newInput);

                for (IMultiPageTaxonEditorPage editorPart : getPages()) {

                    editorPart.redraw();

                }

            } catch (Exception e) {

                MessagingUtils.messageDialog("Error refreshing editor", getClass(), "Could not refresh this editor", e);

            }

        }

    }

    @Override

    public String toString() {

        return String.format("%s[%s]", this.getClass().getSimpleName(), getEditorInput());

    }

    @Override

    public boolean permissionsSatisfied() {

        IEditorPart activeEditor = getActiveEditor();

        if(activeEditor != null && ISecuredEditor.class.isAssignableFrom(activeEditor.getClass())){

            return ((ISecuredEditor)activeEditor).permissionsSatisfied();

        }

        return true;

    }

    /* (non-Javadoc)

     * @see eu.etaxonomy.taxeditor.model.IPartContentHasMedia#canAttachMedia()

     */

    @Override

    public boolean canAttachMedia() {

        return true;

    }

}