/*
 * Copyright (C) 2003-2004 Red Hat Inc. All Rights Reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
 *
 */
package com.arsdigita.cms.ui;

import com.arsdigita.bebop.Component;
import com.arsdigita.bebop.PageState;
import com.arsdigita.bebop.SimpleContainer;
import com.arsdigita.bebop.TabbedPane;
import com.arsdigita.bebop.event.RequestEvent;
import com.arsdigita.bebop.event.RequestListener;
import com.arsdigita.bebop.parameters.BigDecimalParameter;
import com.arsdigita.bebop.parameters.BooleanParameter;
import com.arsdigita.bebop.parameters.IntegerParameter;
import com.arsdigita.bebop.parameters.StringParameter;
import com.arsdigita.cms.*;
import com.arsdigita.cms.dispatcher.CMSPage;
import com.arsdigita.cms.util.GlobalizationUtil;
import com.arsdigita.dispatcher.RequestContext;
import com.arsdigita.domain.DataObjectNotFoundException;
import com.arsdigita.templating.PresentationManager;
import com.arsdigita.templating.Templating;
import com.arsdigita.util.UncheckedWrapperException;
import com.arsdigita.web.Application;
import com.arsdigita.web.Web;
import com.arsdigita.xml.Document;

import java.io.IOException;
import java.math.BigDecimal;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 * <p>The Item Search page.</p>
 *
 * @author Scott Seago (scott@arsdigita.com)
 * @author Sören Bernstein (sbernstein@quasiweb.de)
 * @author Jens Pelzetter (jens@jp-digital.de)
 */
public class ItemSearchPage extends CMSPage {

    private final static String XSL_CLASS = "CMS Admin";
    private TabbedPane m_tabbedPane;
    private ItemSearchFlatBrowsePane m_flatBrowse;
    private ItemSearchBrowsePane m_browse;
    private ItemSearchPopup m_search;
    private ItemSearchCreateItemPane m_create;
    private BigDecimalParameter m_sectionId;
    private int m_lastTab;
    private static final CMSConfig s_conf = CMSConfig.getInstance();
    private static final boolean LIMIT_TO_CONTENT_SECTION = false;
    public static final String CONTENT_SECTION = "section_id";

    /**
     * Construct a new ItemSearchPage
     */
    public ItemSearchPage() {
        super(GlobalizationUtil.globalize("cms.ui.item_search.page_title").localize().toString(), new SimpleContainer());

        setClassAttr("cms-admin");

        addGlobalStateParam(new BigDecimalParameter(ItemSearch.SINGLE_TYPE_PARAM));
        addGlobalStateParam(new StringParameter(ItemSearchPopup.WIDGET_PARAM));
        addGlobalStateParam(new StringParameter("searchWidget"));
        addGlobalStateParam(new StringParameter("publishWidget"));
        addGlobalStateParam(new StringParameter("defaultCreationFolder"));
        addGlobalStateParam(new IntegerParameter("lastTab"));
        addGlobalStateParam(new BooleanParameter("disableCreatePane"));
        addGlobalStateParam(new BooleanParameter("editAfterCreate"));
        m_sectionId = new BigDecimalParameter(CONTENT_SECTION);
        addGlobalStateParam(m_sectionId);

        m_flatBrowse = getFlatBrowsePane();
        m_browse = getBrowsePane();
        m_search = getSearchPane();
        m_create = getCreatePane();

        m_tabbedPane = createTabbedPane();
        m_tabbedPane.setIdAttr("page-body");
        add(m_tabbedPane);

        addRequestListener(new RequestListener() {

            public void pageRequested(final RequestEvent event) {
                final PageState state = event.getPageState();

                final String query = (String) state.getValue(new StringParameter(ItemSearchPopup.QUERY));
                final Boolean disableCreatePane = (Boolean) state.getValue(new BooleanParameter("disableCreatePane"));

                BigDecimal typeParam =
                           (BigDecimal) state.getValue(new BigDecimalParameter(ItemSearch.SINGLE_TYPE_PARAM));
                if ((typeParam == null) || disableCreatePane) {
                    m_tabbedPane.setTabVisible(state, m_create, false);
                    m_create.setVisible(state, false);
                } else {
                    m_tabbedPane.setTabVisible(state, m_create, true);
                    m_create.setVisible(state, true);
                }

                if (state.getValue(new IntegerParameter("lastTab")) == null) {
                    if ((query == null) || query.isEmpty()) {
                        m_tabbedPane.setSelectedIndex(state, 1);
                    } else {
                        m_tabbedPane.setSelectedIndex(state, 0);
                    }

//                    m_tabbedPane.setTabVisible(state, m_create, false);
//                    m_create.setVisible(state, false);

                }

                state.setValue(new IntegerParameter("lastTab"), m_tabbedPane.getSelectedIndex(state));

                if (state.getValue(new StringParameter("defaultCreationFolder")) != null) {
                    m_create.setDefaultFolder((String) state.getValue(new StringParameter("defaultCreationFolder")));
                }
                
                if (state.getValue(new BooleanParameter("editAfterCreate")) != null) {
                    m_create.setEditAfterCreate((Boolean) state.getValue(new BooleanParameter("editAfterCreate")));
                }

//                if (m_lastTab != m_tabbedPane.getSelectedIndex(state)) {
//                    m_lastTab = m_tabbedPane.getSelectedIndex(state);                    
//                    return;
//                }
//
//                //If create pane is selected do nothing (else we don't stay in the create pane)
//                if (m_tabbedPane.getCurrentPane(state) == m_create) {
//                    return;
//                }
//
//                if ((query == null) || query.isEmpty()) {
//                    m_tabbedPane.setSelectedIndex(state, 1);
//                } else {
//                    m_tabbedPane.setSelectedIndex(state, 1);
//                }                

//                if (m_tabbedPane.getCurrentPane(state) == m_create) {
//                    m_tabbedPane.setTabVisible(state, m_create, false);
//                    m_create.setVisible(state, false);
//                }
//
//                m_lastTab = m_tabbedPane.getSelectedIndex(state);
            }

        });

//        m_tabbedPane.addActionListener(new ActionListener() {
//
//            public void actionPerformed(final ActionEvent event) {
//                final PageState state = event.getPageState();
//
//            }
//
//        });

//        m_flatBrowse.addProcessListener(new FormProcessListener() {
//
//            public void process(final FormSectionEvent fse) throws FormProcessException {
//                if (m_flatBrowse.getSubmit().isSelected(fse.getPageState())) {
//                    enableCreatePane(fse.getPageState());
//                }
//            }
//
//        });
    }  // END constructor


    /**
     * Creates, and then caches, the Browse pane. 
     * 
     * Overriding this method to return null will prevent this tab from
     * appearing. Note: not implemented yet.
     */
    protected ItemSearchBrowsePane getBrowsePane() {
        if (m_browse == null) {
            m_browse = new ItemSearchBrowsePane();
        }

        return m_browse;
    }

    protected ItemSearchFlatBrowsePane getFlatBrowsePane() {
        if (m_flatBrowse == null) {
            m_flatBrowse = new ItemSearchFlatBrowsePane("flatBrowse");
        }

        return m_flatBrowse;
    }

    /**
     * Creates, and then caches, the Creation pane. 
     * Overriding this method to return null will prevent this tab from
     * appearing.
     */
    protected ItemSearchPopup getSearchPane() {
        if (m_search == null) {
            // Always search in every content section
//            m_search = new ItemSearchPopup(ContentItem.DRAFT, CMS.getConfig().limitToContentSection());
            m_search = new ItemSearchPopup(ContentItem.DRAFT, LIMIT_TO_CONTENT_SECTION);
        }

        return m_search;
    }

    protected ItemSearchCreateItemPane getCreatePane() {
        if (m_create == null) {
            m_create = new ItemSearchCreateItemPane(this);
        }

        return m_create;
    }

    /**
     * Created the TabbedPane to use for this page. 
     * 
     * Sets the class attribute for this tabbed pane. The default implementation 
     * uses a {@link com.arsdigita.bebop.TabbedPane} and sets the class 
     * attribute to "CMS Admin." This implementation also adds tasks, 
     * content sections, and search panes.
     *
     * Developers can override this method to add only the tabs they want, 
     * or to add additional tabs after the default CMS tabs are added.
     */
    protected TabbedPane createTabbedPane() {
        TabbedPane pane = new TabbedPane();
        pane.setClassAttr(XSL_CLASS);


        addToPane(pane, "flatBrowse", getFlatBrowsePane());
        addToPane(pane, "browse", getBrowsePane());
        addToPane(pane, "search", getSearchPane());
        addToPane(pane, "create", getCreatePane());

        if ("browse".equals(s_conf.getItemSearchDefaultTab())) {
            pane.setDefaultPane(m_browse);
        }
        if ("search".equals(s_conf.getItemSearchDefaultTab())) {
            pane.setDefaultPane(m_search);
        }

        //pane.setDefaultPane(m_flatBrowse);      
        pane.setDefaultPane(m_browse);

        return pane;
    }

    /**
     * Adds the specified component, with the specified tab name, to the 
     * tabbed pane only if it is not null.
     *
     * @param pane    The pane to which to add the tab
     * @param tabName The name of the tab if it's added
     * @param comp    The component to add to the pane
     */
    protected void addToPane(TabbedPane pane, String tabName, Component comp) {
        if (comp != null) {

            pane.addTab(GlobalizationUtil
                        .globalize("cms.ui.item_search." + tabName)
                        .localize().toString() 
                        ,comp);

        }
    }


    /**
     * This strange voodoo from Dan. No idea what it does.
     */
    @Override
    public void dispatch(final HttpServletRequest request,
                         final HttpServletResponse response,
                         RequestContext actx)
            throws IOException, ServletException {
        new CMSExcursion() {

            @Override
            public void excurse()
                    throws IOException, ServletException {
                ContentSection section = null;
                Application app = Web.getContext().getApplication();
                if (app instanceof ContentSection) {
                    section = (ContentSection) app;
                } else {
                    try {
                        section = new ContentSection((BigDecimal) m_sectionId.transformValue(request));
                    } catch (DataObjectNotFoundException ex) {
                        throw new UncheckedWrapperException(ex);
                    }
                }
                setContentSection(section);

                final Document doc = buildDocument(request, response);
                final PresentationManager pm =
                                          Templating.getPresentationManager();

                pm.servePage(doc, request, response);
            }

        }.run();
    }

    protected void setTabActive(final PageState state, final Component component, final boolean value) {
        m_tabbedPane.setTabVisible(state, component, value);
    }

    protected void setTabActive(final PageState state, final int index, final boolean value) {
        m_tabbedPane.setTabVisible(state, index, value);
    }

    protected void setDefaultCreationFolder(final Folder folder) {
        m_create.setDefaultFolder(folder.getOID().toString());
    }
    
    protected void setEditAfterCreate(final boolean editAfterCreate) {
        m_create.setEditAfterCreate(editAfterCreate);
    } 

}