org.hip.vif.forum.groups.ui.GroupContentView.java Source code

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Here is the source code for org.hip.vif.forum.groups.ui.GroupContentView.java

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/**
This package is part of the application VIF.
Copyright (C) 2011-2014, Benno Luthiger
    
   This program 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 2 of the License, or
   (at your option) any later version.
    
   This program 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 this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

package org.hip.vif.forum.groups.ui;

import org.hip.kernel.exc.VException;
import org.hip.vif.core.bom.Group;
import org.hip.vif.core.bom.GroupHome;
import org.hip.vif.forum.groups.Activator;
import org.hip.vif.forum.groups.data.GroupContentContainer;
import org.hip.vif.forum.groups.data.GroupContentWrapper;
import org.hip.vif.forum.groups.tasks.GroupShowTask;
import org.hip.vif.web.util.VIFViewHelper;

import com.vaadin.event.ItemClickEvent;
import com.vaadin.event.ShortcutAction.KeyCode;
import com.vaadin.event.ShortcutListener;
import com.vaadin.shared.ui.label.ContentMode;
import com.vaadin.ui.CustomComponent;
import com.vaadin.ui.Label;
import com.vaadin.ui.Tree;
import com.vaadin.ui.VerticalLayout;

/** The view to display the group's tree of questions.
 *
 * @author Luthiger Created: 22.05.2011 */
@SuppressWarnings("serial")
public class GroupContentView extends CustomComponent {
    private final Tree questionTree;
    private final GroupShowTask task;

    /** Constructor
     *
     * @param inGroup {@link Group}
     * @param inContent {@link GroupContentContainer}
     * @param inTask {@link GroupShowTask}
     * @throws VException */
    public GroupContentView(final Group inGroup, final GroupContentContainer inContent, final GroupShowTask inTask)
            throws VException {
        task = inTask;

        final VerticalLayout lLayout = new VerticalLayout();
        setCompositionRoot(lLayout);
        lLayout.setStyleName("vif-table"); //$NON-NLS-1$

        lLayout.addComponent(new Label(String.format(VIFViewHelper.TMPL_TITLE, "vif-title", //$NON-NLS-1$
                Activator.getMessages().getFormattedMessage("ui.group.content.view.title.page", //$NON-NLS-1$
                        inGroup.get(GroupHome.KEY_NAME).toString())), ContentMode.HTML)); //$NON-NLS-1$
        lLayout.addComponent(new Label(
                String.format(VIFViewHelper.TMPL_TITLE, "vif-description", //$NON-NLS-1$
                        inGroup.get(GroupHome.KEY_DESCRIPTION).toString()), ContentMode.HTML));

        questionTree = new Tree();
        questionTree.focus();
        questionTree.setContainerDataSource(inContent);
        lLayout.addComponent(questionTree);

        for (final GroupContentWrapper lNode : inContent.getExpandedNodes()) {
            questionTree.expandItem(lNode);
        }

        questionTree.addItemClickListener(new ItemClickEvent.ItemClickListener() {
            @Override
            public void itemClick(final ItemClickEvent inEvent) {
                task.processSelection((GroupContentWrapper) inEvent.getItemId());
            }
        });
        questionTree.addShortcutListener(new ExtendedShortcutListener("enter", KeyCode.ENTER)); //$NON-NLS-1$
    }

    private class ExtendedShortcutListener extends ShortcutListener {
        public ExtendedShortcutListener(final String inShorthandCaption, final int inKey) {
            super(inShorthandCaption, inKey, null);
        }

        @Override
        public void handleAction(final Object inSender, final Object inTarget) {
            task.processSelection((GroupContentWrapper) ((Tree) inTarget).getValue());
        }
    }

}