/*******************************************************************************
 * Copyright (c) 2009, 2010 Progress Software Corporation.
 * 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
 ******************************************************************************/
// Copyright (c) 2009 Progress Software Corporation.  
package org.fusesource.tools.messaging;

import java.util.Collections;
import java.util.Map;

import org.eclipse.jface.dialogs.Dialog;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Group;
import org.eclipse.swt.widgets.Label;
import org.eclipse.ui.dialogs.WizardNewProjectCreationPage;
import org.eclipse.wst.server.ui.ServerUIUtil;
import org.fusesource.tools.messaging.server.MessagingServersUtil;

/**
 * First page while creating a new Messaging Project
 */
public class MsgProjectCreationPage extends WizardNewProjectCreationPage {
    private String selectedServerId;
    private Map<String, String> msgServersIdNameMap = Collections.emptyMap();

    public MsgProjectCreationPage(String pageName) {
        super(pageName);
        setTitle("Create a Messaging Project");
        setDescription("Create a new Messaging Project");
    }

    @Override
    public void createControl(Composite parent) {
        super.createControl(parent);
        createMessagingServersGroup((Composite) getControl());
        Dialog.applyDialogFont(getControl());
        Composite composite = (Composite) getControl();
        composite.layout();
    }

    public void createMessagingServersGroup(Composite composite) {
        Group serversGroup = new Group(composite, SWT.NONE);
        serversGroup.setFont(composite.getFont());
        serversGroup.setText("Messaging Servers");
        serversGroup.setLayoutData(new GridData(SWT.FILL, SWT.TOP, true, false));
        serversGroup.setLayout(new GridLayout(3, false));
        Label servers = new Label(serversGroup, SWT.NONE);
        servers.setText("Choose Server:");

        final Combo serversCombo = new Combo(serversGroup, SWT.READ_ONLY);
        GridData data = new GridData(GridData.FILL_HORIZONTAL);
        serversCombo.setLayoutData(data);
        populateServerNames(serversCombo, false);
        serversCombo.addSelectionListener(new SelectionListener() {
            public void widgetDefaultSelected(SelectionEvent arg0) {
            }

            public void widgetSelected(SelectionEvent arg0) {
                setSelectedServerId(serversCombo.getItem(serversCombo.getSelectionIndex()));
                setPageComplete(validate() && isPageComplete());
            }
        });

        Button newServer = new Button(serversGroup, SWT.NONE);
        newServer.setData(new GridData(SWT.RIGHT));
        newServer.setText("New Server...");
        newServer.addSelectionListener(new SelectionListener() {
            public void widgetDefaultSelected(SelectionEvent arg0) {
            }

            public void widgetSelected(SelectionEvent arg0) {
                boolean isServerCreated = ServerUIUtil.showNewServerWizard(Display.getDefault().getActiveShell(),
                        IConstants.MSG_PRJ_MODULE_ID, null, null);
                if (isServerCreated) {
                    populateServerNames(serversCombo, true);
                    // TODO optimize here, to get the newly added server only...
                    if (serversCombo.getItemCount() > 0) {
                        serversCombo.select(0);
                        setSelectedServerId(serversCombo.getItem(serversCombo.getSelectionIndex()));
                    }
                }
            }

        });
    }

    private void populateServerNames(Combo serversCombo, boolean getUpdatedList) {
        if (msgServersIdNameMap.isEmpty() || getUpdatedList) {
            msgServersIdNameMap = MessagingServersUtil.getMsgServersNameIdMap();
        }
        serversCombo.setItems(msgServersIdNameMap.values().toArray(new String[] {}));
    }

    // TODO Add required validation here
    public boolean validate() {
        // if (selectedServerId == null) {
        // if (!(getProjectName() == null || getProjectName().trim().length() ==
        // 0)) {
        // if (hasMsgServers)
        // setErrorMessage("Please choose a Messaging server");
        // else
        // setErrorMessage("Please create and choose a Messaging server");
        // }
        // return true;
        // }
        setErrorMessage(null);
        return true;
    }

    public String getSelectedServerId() {
        return selectedServerId;
    }

    public void setSelectedServerId(String selectedServerId) {
        this.selectedServerId = selectedServerId;
    }
}