// ============================================================================
//
// Copyright (C) 2006-2012 Talend Inc. - www.talend.com
//
// This source code is available under agreement available at
// %InstallDIR%\features\org.talend.rcp.branding.%PRODUCTNAME%\%PRODUCTNAME%license.txt
//
// You should have received a copy of the agreement
// along with this program; if not, write to Talend SA
// 9 rue Pages 92150 Suresnes, France
//
// ============================================================================
package org.talend.designer.core.ui.editor.connections;

import org.eclipse.gef.commands.Command;
import org.eclipse.gef.editpolicies.DirectEditPolicy;
import org.eclipse.gef.requests.DirectEditRequest;
import org.eclipse.jface.dialogs.MessageDialog;
import org.talend.core.model.components.IComponent;
import org.talend.core.model.metadata.IMetadataTable;
import org.talend.designer.core.i18n.Messages;
import org.talend.designer.core.model.process.ConnectionManager;
import org.talend.designer.core.ui.editor.cmd.ChangeConnTextCommand;

/**
 * Policy to edit the label of the connection. <br/>
 * 
 * $Id: ConnTextEditPolicy.java 77219 2012-01-24 01:14:15Z mhirt $
 * 
 */
public class ConnTextEditPolicy extends DirectEditPolicy {

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.eclipse.gef.editpolicies.DirectEditPolicy#getDirectEditCommand(org.eclipse.gef.requests.DirectEditRequest)
     */
    protected Command getDirectEditCommand(DirectEditRequest edit) {
        String labelText = (String) edit.getCellEditor().getValue();
        ConnLabelEditPart labelPart = (ConnLabelEditPart) getHost();
        Connection connec = (Connection) getHost().getParent().getModel();

        // if the user enter the same name as the current connection, we just ignore it.
        if (!connec.getName().equalsIgnoreCase(labelText)) {
            if (!ConnectionManager.canRename(connec.getSource(), connec.getTarget(), connec.getLineStyle(), labelText)) {
                String message = Messages.getString("ConnectionCreateAction.errorCreateConnectionName", labelText); //$NON-NLS-1$
                MessageDialog.openError(getHost().getViewer().getControl().getShell(), Messages
                        .getString("ConnTextEditPolicy.ErrorTitle"), message); //$NON-NLS-1$
                return null;
            } else {
                final IMetadataTable metadataTable = connec.getMetadataTable();
                if (connec.getSource() != null && connec.getSource().getComponent() != null && metadataTable != null) {
                    IComponent comp = connec.getSource().getComponent();
                    if ("tMap".equals(comp.getName()) && metadataTable.getTableName().endsWith("ErrorReject")) {//$NON-NLS-1$//$NON-NLS-1$
                        MessageDialog.openInformation(getHost().getViewer().getControl().getShell(), "Infor",
                                "Can't rename tMap ErrorReject");
                        return null;
                    }
                }

            }
        }

        ChangeConnTextCommand command = new ChangeConnTextCommand((Connection) labelPart.getParent().getModel(), labelText);
        return command;
    }

    /*
     * (non-Javadoc)
     * 
     * @see
     * org.eclipse.gef.editpolicies.DirectEditPolicy#showCurrentEditValue(org.eclipse.gef.requests.DirectEditRequest)
     */
    protected void showCurrentEditValue(DirectEditRequest request) {
    }

}