GroupSelectionDialog.java

/*
    Copyright 2009-2011 Josh Drummond

    This file is part of WebPasswordSafe.

    WebPasswordSafe 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.

    WebPasswordSafe 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 WebPasswordSafe; if not, write to the Free Software
    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/
package net.webpasswordsafe.client.ui;

import java.util.ArrayList;
import java.util.List;
import net.webpasswordsafe.client.i18n.TextMessages;
import net.webpasswordsafe.common.model.Group;
import net.webpasswordsafe.common.util.Constants;
import com.extjs.gxt.ui.client.Style.HorizontalAlignment;
import com.extjs.gxt.ui.client.Style.SelectionMode;
import com.extjs.gxt.ui.client.data.BaseModel;
import com.extjs.gxt.ui.client.event.BaseEvent;
import com.extjs.gxt.ui.client.event.ButtonEvent;
import com.extjs.gxt.ui.client.event.Events;
import com.extjs.gxt.ui.client.event.Listener;
import com.extjs.gxt.ui.client.event.SelectionListener;
import com.extjs.gxt.ui.client.store.ListStore;
import com.extjs.gxt.ui.client.util.Format;
import com.extjs.gxt.ui.client.widget.Window;
import com.extjs.gxt.ui.client.widget.button.Button;
import com.extjs.gxt.ui.client.widget.form.FormPanel;
import com.extjs.gxt.ui.client.widget.form.ListField;
import com.extjs.gxt.ui.client.widget.form.FormPanel.LabelAlign;
import com.google.gwt.core.client.GWT;


/**
 * @author Josh Drummond
 *
 */
public class GroupSelectionDialog extends Window
{
    private ListField<GroupData> groupListBox;
    private ListStore<GroupData> store;
    private GroupListener groupListener;
    private List<Group> groups;
    private final static TextMessages textMessages = GWT.create(TextMessages.class);

    public GroupSelectionDialog(GroupListener groupListener, List<Group> groups, boolean allowMultiple)
    {
        this.setHeading(textMessages.groups());
        this.setModal(true);
        this.groupListener = groupListener;
        this.groups = groups;
        this.setResizable(false);

        FormPanel form = new FormPanel();
        form.setHeaderVisible(false);
        form.setFrame(true);
        form.setLabelAlign(LabelAlign.TOP);
        form.setButtonAlign(HorizontalAlignment.CENTER);
        
        String selectLabelText = allowMultiple ? textMessages.pleaseSelectGroups() : textMessages.pleaseSelectGroup();
        store = new ListStore<GroupData>();
        groupListBox = new ListField<GroupData>();
        groupListBox.setSize(300, 150);
        groupListBox.setDisplayField(Constants.NAME);
        groupListBox.setFieldLabel(selectLabelText);
        groupListBox.getListView().getSelectionModel().setSelectionMode(allowMultiple ? SelectionMode.MULTI : SelectionMode.SINGLE);
        groupListBox.getListView().addListener(Events.OnDoubleClick, new Listener<BaseEvent>()
        {
            @Override
            public void handleEvent(BaseEvent be)
            {
                if (groupListBox.getSelection().size() > 0)
                {
                    doOkay();
                }
            }
        });
        form.add(groupListBox);

        Button okayButton = new Button(textMessages.okay(), new SelectionListener<ButtonEvent>() {
            @Override
            public void componentSelected(ButtonEvent ce) {
                doOkay();
            }
        });

        Button cancelButton = new Button(textMessages.cancel(), new SelectionListener<ButtonEvent>() {
            @Override
            public void componentSelected(ButtonEvent ce) {
                doCancel();
            }
        });
        
        form.setButtonAlign(HorizontalAlignment.CENTER);
        form.addButton(okayButton);
        form.addButton(cancelButton);

        setFields();
        
        this.add(form);
    }

    private void setFields()
    {
        store.removeAll();
        for (Group group : groups)
        {
            store.add(new GroupData(group));
        }
        groupListBox.setStore(store);
    }

    private void doCancel()
    {
        hide();
    }

    private void doOkay()
    {
        List<GroupData> dataSelected = groupListBox.getSelection();
        List<Group> groupsSelected = new ArrayList<Group>(dataSelected.size());
        for (GroupData gd : dataSelected)
        {
            groupsSelected.add((Group)gd.get(Constants.GROUP));
        }
        groupListener.doGroupsChosen(groupsSelected);
        hide();
    }

    private class GroupData extends BaseModel
    {
        private static final long serialVersionUID = 1L;
        public GroupData(Group group)
        {
            set(Constants.ID, group.getId());
            set(Constants.NAME, Format.htmlEncode(group.getName()));
            set(Constants.GROUP, group);
        }
    }
}