eu.cloud4soa.frontend.widget.search.client.views.gxt.CustomizeFacetsPanel.java Source code

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Here is the source code for eu.cloud4soa.frontend.widget.search.client.views.gxt.CustomizeFacetsPanel.java

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/*
 * This file is part of Cloud4SOA Frontend.
 *
 *     Cloud4SOA Frontend is free software: you can redistribute it and/or modify
 *     it under the terms of the GNU General Public License as published by
 *     the Free Software Foundation, either version 3 of the License, or
 *     (at your option) any later version.
 *
 *     Cloud4SOA Frontend 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 General Public License for more details.
 *
 *     You should have received a copy of the GNU General Public License
 *     along with Cloud4SOA Frontend.  If not, see <http://www.gnu.org/licenses/>.
 */

package eu.cloud4soa.frontend.widget.search.client.views.gxt;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.SortedMap;
import java.util.TreeMap;

import com.extjs.gxt.ui.client.Style.Scroll;
import com.extjs.gxt.ui.client.util.Margins;
import com.extjs.gxt.ui.client.util.Padding;
import com.extjs.gxt.ui.client.widget.LayoutContainer;
import com.extjs.gxt.ui.client.widget.layout.VBoxLayout;
import com.extjs.gxt.ui.client.widget.layout.VBoxLayout.VBoxLayoutAlign;
import com.extjs.gxt.ui.client.widget.layout.VBoxLayoutData;
import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;
import com.google.gwt.user.client.ui.CheckBox;

import eu.cloud4soa.frontend.commons.client.datamodel.frontend.paas.Facet;
import eu.cloud4soa.frontend.commons.client.events.SelectedFacetChangedEvent;
import eu.cloud4soa.frontend.widget.search.client.views.FacetedSearchView;

public class CustomizeFacetsPanel extends LayoutContainer {

    private int height = 200;
    private Map<Facet, CheckBox> cbFacets = new HashMap<Facet, CheckBox>();
    private SortedMap<Facet, Boolean> facets;
    private FacetedSearchView view;
    private boolean initialised = false;

    public SortedMap<Facet, Boolean> getFacetTypes() {
        return facets;
    }

    public Map<Facet, CheckBox> getFacetCustomisation() {
        return cbFacets;
    }

    public CustomizeFacetsPanel(final FacetedSearchView view) {
        this.view = view;
    }

    private void initializeView() {
        initialised = true;

        setHeight(height);
        setScrollMode(Scroll.NONE);
        setBorders(false);
        VBoxLayout layout = new VBoxLayout();
        layout.setPadding(new Padding(5));
        layout.setVBoxLayoutAlign(VBoxLayoutAlign.LEFT);
        setLayout(layout);
        VBoxLayoutData vboxData = new VBoxLayoutData(new Margins(2));

        ValueChangeHandler<Boolean> facetHandler = new ValueChangeHandler<Boolean>() {
            @Override
            public void onValueChange(ValueChangeEvent<Boolean> event) {
                System.out.println("Facet " + ((CheckBox) event.getSource()).getText() + " selected is "
                        + ((CheckBox) event.getSource()).getValue());
                // Send facet customisation change to FacetedSearchPanel
                try {
                    view.getEventBus()
                            .fireEvent(new SelectedFacetChangedEvent(
                                    getFacetFromCheckBox((CheckBox) event.getSource()),
                                    ((CheckBox) event.getSource()).getValue()));
                } catch (Exception e) {
                    e.printStackTrace();
                }

            }
        };

        // TODO Manage default selected facet from user's preferences
        for (Facet facet : facets.keySet()) {
            addFacetCheckbox(vboxData, facetHandler, facet, facets.get(facet));
        }

        layout();
    }

    public void setFacets(List<Facet> gotFacets) {
        facets = new TreeMap<Facet, Boolean>();
        for (Facet facet : gotFacets) {
            facets.put(facet, true);
        }

        // Initialize view
        if (!initialised)
            initializeView();
    }

    private void addFacetCheckbox(VBoxLayoutData vboxData, ValueChangeHandler<Boolean> facetHandler, Facet facet,
            boolean show) {
        CheckBox cb = new CheckBox(facet.getLabel());
        cb.addValueChangeHandler(facetHandler);
        add(cb, vboxData);
        cb.setValue(show);
        cbFacets.put(facet, cb);
    }

    private Facet getFacetFromCheckBox(CheckBox box) {
        Facet result = null;
        for (Facet facet : cbFacets.keySet()) {
            if (cbFacets.get(facet).equals(box)) {
                result = facet;
                break;
            }
        }
        return result;
    }
}