package de.intevation.flys.client.client.ui.chart;

import org.w3c.dom.Document;
import de.intevation.artifacts.common.utils.XMLUtils;

import com.google.gwt.core.client.GWT;
import com.google.gwt.user.client.rpc.AsyncCallback;

import com.smartgwt.client.types.ListGridFieldType;
import com.smartgwt.client.widgets.grid.ListGridField;
import com.smartgwt.client.widgets.layout.VLayout;
import com.smartgwt.client.widgets.grid.events.RowContextClickEvent;
import com.smartgwt.client.widgets.grid.events.RowContextClickHandler;
import com.smartgwt.client.widgets.menu.Menu;
import com.smartgwt.client.widgets.menu.MenuItem;
import com.smartgwt.client.widgets.menu.MenuItemSeparator;
import com.smartgwt.client.widgets.menu.events.MenuItemClickEvent;
import com.smartgwt.client.widgets.menu.events.ClickHandler;

import de.intevation.flys.client.shared.model.Collection;
import de.intevation.flys.client.shared.model.Theme;
import de.intevation.flys.client.shared.model.OutputMode;
import de.intevation.flys.client.shared.model.FacetRecord;
import de.intevation.flys.client.shared.model.Facet;
import de.intevation.flys.client.shared.model.Artifact;
import de.intevation.flys.client.shared.model.CollectionItemAttribute;

import de.intevation.flys.client.client.FLYSConstants;
import de.intevation.flys.client.client.ui.ThemePanel;
import de.intevation.flys.client.client.Config;
import de.intevation.flys.client.client.ui.CollectionView;

import de.intevation.flys.client.client.services.FeedService;
import de.intevation.flys.client.client.services.FeedServiceAsync;
import de.intevation.flys.client.client.services.CollectionItemAttributeService;
import de.intevation.flys.client.client.services.CollectionItemAttributeServiceAsync;

/**
 * @author <a href="mailto:ingo.weinzierl@intevation.de">Ingo Weinzierl</a>
 */
public class ChartThemePanel extends ThemePanel {

    /** The interface that provides i18n messages. */
    protected FLYSConstants MSG = GWT.create(FLYSConstants.class);

    /** The collection */
    protected Collection collection;

    /** The collection view*/
    protected CollectionView view;

    /** The service used to get collection item attributes. */
    protected CollectionItemAttributeServiceAsync itemAttributeService =
        GWT.create(CollectionItemAttributeService.class);

    public static final String GRID_FIELD_ACTIVE  = "active";
    public static final String GRID_FIELD_NAME    = "name";
    public static final String GRID_FIELD_ACTIONS = "actions";

    FeedServiceAsync feedService = GWT.create(
        de.intevation.flys.client.client.services.FeedService.class);

    public ChartThemePanel(Collection collection, OutputMode mode) {
        super(collection, mode);
        this.collection = collection;

        initGrid();
        initLayout();

        updateGrid();
    }


    /**
     * Initializes the layout of this panel.
     */
    protected void initLayout() {
        setWidth100();
        setHeight100();

        VLayout layout = new VLayout();
        layout.setWidth100();
        layout.setHeight100();

        layout.addMember(list);
        layout.addMember(navigation);

        addChild(layout);
    }


    /**
     * Initializes the components (columns) of the theme grid.
     */
    protected void initGrid() {
        list.setCanEdit(true);
        list.setCanSort(false);
        list.setShowRecordComponents(false);
        list.setShowRecordComponentsByCell(true);
        list.setShowHeader(true);
        list.setShowHeaderContextMenu(false);
        list.setWidth100();
        list.setHeight100();

        list.addEditCompleteHandler(this);
        list.addRowContextClickHandler(new RowContextClickHandler() {
            public void onRowContextClick(RowContextClickEvent event) {
                FacetRecord record = (FacetRecord) event.getRecord();

                Menu menu = createContextMenu(record);
                list.setContextMenu(menu);
                menu.showContextMenu();

                event.cancel();
            }
        });

        ListGridField active = new ListGridField(GRID_FIELD_ACTIVE, " ", 20);
        active.setType(ListGridFieldType.BOOLEAN);

        ListGridField name = new ListGridField(
            GRID_FIELD_NAME, MSG.chart_themepanel_header_themes());
        name.setType(ListGridFieldType.TEXT);

        list.setFields(active, name);
    }


    protected Menu createContextMenu(final FacetRecord record) {
        Menu menu = new Menu();

        MenuItem properties = new MenuItem(MSG.properties());
        properties.addClickHandler(new ClickHandler() {
            public void onClick(MenuItemClickEvent evt) {
                GWT.log("clicked properties");
                getItemAttributes(record);
            }
        });
        menu.addItem(properties);
        return menu;
    }


    @Override
    public void activateTheme(Theme theme, boolean active) {
        theme.setActive(active ? 1 : 0);
    }


    protected void getItemAttributes(FacetRecord record) {
        Config config = Config.getInstance();
        String url = config.getServerUrl();
        String locale = config.getLocale();

        String artifact = record.getTheme().getArtifact();

        itemAttributeService.getCollectionItemAttribute(
            this.collection,
            artifact,
            url,
            locale,
            new AsyncCallback<CollectionItemAttribute>() {
                public void onFailure (Throwable caught) {
                    GWT.log("Could not get Collection item attributes.");
                }
                public void onSuccess(CollectionItemAttribute cia) {
                    GWT.log("Successfully loaded collectionitem attributes.");
                    StyleEditorWindow win = new StyleEditorWindow(
                        collection,
                        cia);
                    win.setCollectionView(view);
                    win.show();
                }
            });
    }


    public void setCollectionView (CollectionView view) {
        this.view = view;
    }
}
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