com.google.gwt.sample.showcase.client.content.i18n.CwConstantsExample.java Source code

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Here is the source code for com.google.gwt.sample.showcase.client.content.i18n.CwConstantsExample.java

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/*
 * Copyright 2008 Google Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.google.gwt.sample.showcase.client.content.i18n;

import com.google.gwt.core.client.GWT;
import com.google.gwt.core.client.RunAsyncCallback;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.i18n.client.Constants;
import com.google.gwt.sample.showcase.client.ContentWidget;
import com.google.gwt.sample.showcase.client.ShowcaseAnnotations.ShowcaseData;
import com.google.gwt.sample.showcase.client.ShowcaseAnnotations.ShowcaseRaw;
import com.google.gwt.sample.showcase.client.ShowcaseAnnotations.ShowcaseSource;
import com.google.gwt.user.client.rpc.AsyncCallback;
import com.google.gwt.user.client.ui.Anchor;
import com.google.gwt.user.client.ui.FlexTable;
import com.google.gwt.user.client.ui.FlexTable.FlexCellFormatter;
import com.google.gwt.user.client.ui.HTML;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.google.gwt.user.client.ui.ListBox;
import com.google.gwt.user.client.ui.TextBox;
import com.google.gwt.user.client.ui.Widget;

import java.util.Map;

/**
 * Example file.
 */
@ShowcaseRaw({ "ExampleConstants.java", "ExampleConstants.properties" })
public class CwConstantsExample extends ContentWidget {
    /**
     * The constants used in this Content Widget.
     */
    @ShowcaseSource
    public static interface CwConstants extends Constants {
        String cwConstantsExampleDescription();

        String cwConstantsExampleLinkText();

        String cwConstantsExampleName();
    }

    /**
     * An instance of the constants.
     */
    @ShowcaseData
    private final CwConstants constants;

    /**
     * Constructor.
     *
     * @param constants the constants
     */
    public CwConstantsExample(CwConstants constants) {
        super(constants.cwConstantsExampleName(), constants.cwConstantsExampleDescription(), false,
                "ExampleConstants.java", "ExampleConstants.properties");
        this.constants = constants;
    }

    /**
     * Initialize this example.
     */
    @ShowcaseSource
    @Override
    public Widget onInitialize() {
        // Create the internationalized constants
        ExampleConstants exampleConstants = GWT.create(ExampleConstants.class);

        // Use a FlexTable to layout the content
        FlexTable layout = new FlexTable();
        FlexCellFormatter formatter = layout.getFlexCellFormatter();
        layout.setCellSpacing(5);

        // Add a link to the source code of the Interface
        final String rawFile = getSimpleName(ExampleConstants.class);
        Anchor link = new Anchor(rawFile);
        link.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                fireRawSourceRequest(rawFile + ".java");
            }
        });
        HorizontalPanel linkPanel = new HorizontalPanel();
        linkPanel.setSpacing(3);
        linkPanel.add(new HTML(constants.cwConstantsExampleLinkText()));
        linkPanel.add(link);
        layout.setWidget(0, 0, linkPanel);
        formatter.setColSpan(0, 0, 2);

        // Show the first name
        TextBox firstNameBox = new TextBox();
        firstNameBox.setText("Amelie");
        firstNameBox.setWidth("17em");
        layout.setHTML(1, 0, exampleConstants.firstName());
        layout.setWidget(1, 1, firstNameBox);

        // Show the last name
        TextBox lastNameBox = new TextBox();
        lastNameBox.setText("Crutcher");
        lastNameBox.setWidth("17em");
        layout.setHTML(2, 0, exampleConstants.lastName());
        layout.setWidget(2, 1, lastNameBox);

        // Create a list box of favorite colors
        ListBox colorBox = new ListBox();
        Map<String, String> colorMap = exampleConstants.colorMap();
        for (Map.Entry<String, String> entry : colorMap.entrySet()) {
            String key = entry.getKey();
            String value = entry.getValue();
            colorBox.addItem(value, key);
        }
        layout.setHTML(3, 0, exampleConstants.favoriteColor());
        layout.setWidget(3, 1, colorBox);

        // Return the layout Widget
        return layout;
    }

    @Override
    protected void asyncOnInitialize(final AsyncCallback<Widget> callback) {
        GWT.runAsync(CwConstantsExample.class, new RunAsyncCallback() {

            public void onFailure(Throwable caught) {
                callback.onFailure(caught);
            }

            public void onSuccess() {
                callback.onSuccess(onInitialize());
            }
        });
    }
}