org.daxplore.presenter.admin.view.PrefixListViewImpl.java Source code

Introduction

Here is the source code for org.daxplore.presenter.admin.view.PrefixListViewImpl.java

Source

/*
 *  Copyright 2012 Axel Winkler, Daniel Dunr
 * 
 *  This file is part of Daxplore Presenter.
 *
 *  Daxplore Presenter 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.
 *
 *  Daxplore Presenter 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 Daxplore Presenter.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.daxplore.presenter.admin.view;

import java.util.LinkedList;
import java.util.List;

import com.google.gwt.cell.client.TextCell;
import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.Scheduler;
import com.google.gwt.core.client.Scheduler.ScheduledCommand;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.uibinder.client.UiBinder;
import com.google.gwt.uibinder.client.UiField;
import com.google.gwt.uibinder.client.UiTemplate;
import com.google.gwt.user.cellview.client.CellList;
import com.google.gwt.user.cellview.client.HasKeyboardSelectionPolicy.KeyboardSelectionPolicy;
import com.google.gwt.user.client.Window;
import com.google.gwt.user.client.ui.Button;
import com.google.gwt.user.client.ui.Composite;
import com.google.gwt.user.client.ui.Widget;
import com.google.gwt.view.client.SelectionChangeEvent;
import com.google.gwt.view.client.SingleSelectionModel;
import com.google.inject.Inject;

public class PrefixListViewImpl extends Composite implements PrefixListView {

    @UiTemplate("PrefixListViewImpl.ui.xml")
    interface PrefixListViewPanel extends UiBinder<Widget, PrefixListViewImpl> {
        /* Empty UiTemplate interface */}

    private static PrefixListViewPanel uiBinder = GWT.create(PrefixListViewPanel.class);

    @UiField(provided = true)
    protected CellList<String> prefixCellList;

    @UiField
    protected Button addPrefixButton;

    private SingleSelectionModel<String> selectionModel;
    private List<String> prefixList = new LinkedList<String>();

    @Inject
    public PrefixListViewImpl() {
        TextCell textCell = new TextCell();
        prefixCellList = new CellList<String>(textCell);
        prefixCellList.setKeyboardSelectionPolicy(KeyboardSelectionPolicy.ENABLED);
        selectionModel = new SingleSelectionModel<String>();
        prefixCellList.setSelectionModel(selectionModel);
        prefixCellList.setRowCount(0, true);

        initWidget(uiBinder.createAndBindUi(this));
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void addAddPrefixClickHandler(ClickHandler handler) {
        addPrefixButton.addClickHandler(handler);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void addSelectPrefixHandler(SelectionChangeEvent.Handler handler) {
        selectionModel.addSelectionChangeHandler(handler);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public String getSelectedPrefix() {
        return selectionModel.getSelectedObject();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public String promptForPrefixName() {
        String prefix = Window.prompt(
                "Enter the name for the new prefix.\n\n" + "A single word using lowercase letters a-z.", "");
        return prefix;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void alertInvalidPrefix(String prefix) {
        Window.alert("The prefix name '" + prefix + "' is not valid.\n\n"
                + "Make sure to write the prefix as a single word, only using lowercase letters a-z.");

    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void setPrefixes(final List<String> prefixList) {
        this.prefixList = prefixList;
        // Do it deferred due to strange bug when changing list size from 2 to 1
        Scheduler.get().scheduleDeferred(new ScheduledCommand() {
            @Override
            public void execute() {
                prefixCellList.setRowData(prefixList);
            }
        });
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void selectPrefix(String prefix) {
        selectionModel.setSelected(prefix, true);
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public Widget asWidget() {
        return this;
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public boolean containsPrefix(String prefix) {
        return prefixList.contains(prefix);
    }
}