net.s17fabu.vip.gwt.showcase.client.content.i18n.CwConstantsExample.java Source code

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Here is the source code for net.s17fabu.vip.gwt.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 net.s17fabu.vip.gwt.showcase.client.content.i18n;

import java.util.Map;

import net.s17fabu.vip.gwt.showcase.client.ContentWidget;
import net.s17fabu.vip.gwt.showcase.client.ShowcaseConstants;

import com.google.gwt.core.client.GWT;
import com.google.gwt.event.dom.client.ClickEvent;
import com.google.gwt.event.dom.client.ClickHandler;
import com.google.gwt.event.logical.shared.SelectionEvent;
import com.google.gwt.i18n.client.Constants;
import com.google.gwt.user.client.ui.FlexTable;
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 com.google.gwt.user.client.ui.FlexTable.FlexCellFormatter;

/**
 * Example file.
 */
public class CwConstantsExample extends ContentWidget {
    /**
     * The constants used in this Content Widget.
     */
    public static interface CwConstants extends Constants, ContentWidget.CwConstants {
        String cwConstantsExampleDescription();

        String cwConstantsExampleLinkText();

        String cwConstantsExampleName();
    }

    /**
     * An instance of the constants.
     */
    private CwConstants constants;

    /**
     * Indicates whether or not we have loaded the {@link ExampleConstants} java
     * source yet.
     */
    private boolean javaLoaded = false;

    /**
     * The widget used to display {@link ExampleConstants} java source.
     */
    private HTML javaWidget = null;

    /**
     * Indicates whether or not we have loaded the {@link ExampleConstants}
     * properties source yet.
     */
    private boolean propertiesLoaded = false;

    /**
     * The widget used to display {@link ExampleConstants} properties source.
     */
    private HTML propertiesWidget = null;

    /**
     * Constructor.
     * 
     * @param constants the constants
     */
    public CwConstantsExample(CwConstants constants) {
        super(constants);
        this.constants = constants;
    }

    @Override
    public String getDescription() {
        return constants.cwConstantsExampleDescription();
    }

    @Override
    public String getName() {
        return constants.cwConstantsExampleName();
    }

    @Override
    public boolean hasStyle() {
        return false;
    }

    /**
     * Initialize this example.
     */
    @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
        HTML link = new HTML(" <a href=\"javascript:void(0);\">ExampleConstants</a>");
        link.addClickHandler(new ClickHandler() {
            public void onClick(ClickEvent event) {
                selectTab(2);
            }
        });
        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
    public void onInitializeComplete() {
        addConstantsTab();
    }

    @Override
    public void onSelection(SelectionEvent<Integer> event) {
        super.onSelection(event);

        int tabIndex = event.getSelectedItem().intValue();
        if (!javaLoaded && tabIndex == 2) {
            // Load ErrorMessages.java
            javaLoaded = true;
            String className = ExampleConstants.class.getName();
            className = className.substring(className.lastIndexOf(".") + 1);
            requestSourceContents(ShowcaseConstants.DST_SOURCE_RAW + className + ".java.html", javaWidget, null);
        } else if (!propertiesLoaded && tabIndex == 3) {
            // Load ErrorMessages.properties
            propertiesLoaded = true;
            String className = ExampleConstants.class.getName();
            className = className.substring(className.lastIndexOf(".") + 1);
            requestSourceContents(ShowcaseConstants.DST_SOURCE_RAW + className + ".properties.html",
                    propertiesWidget, null);
        }
    }

    /**
     * Add a tab to this example to show the messages interface.
     */
    private void addConstantsTab() {
        // Add a tab to show the interface
        javaWidget = new HTML();
        add(javaWidget, "ExampleConstants.java");

        // Add a tab to show the properties
        propertiesWidget = new HTML();
        add(propertiesWidget, "ExampleConstants.properties");
    }
}