| /* |
| * 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.event.dom.client.KeyUpEvent; |
| import com.google.gwt.event.dom.client.KeyUpHandler; |
| 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.TextBox; |
| import com.google.gwt.user.client.ui.Widget; |
| |
| import java.util.MissingResourceException; |
| |
| /** |
| * Example file. |
| */ |
| @ShowcaseRaw({"ColorConstants.java", "ColorConstants.properties"}) |
| public class CwConstantsWithLookupExample extends ContentWidget { |
| /** |
| * The constants used in this Content Widget. |
| */ |
| @ShowcaseSource |
| public static interface CwConstants extends Constants { |
| String cwConstantsWithLookupExampleDescription(); |
| |
| String cwConstantsWithLookupExampleLinkText(); |
| |
| String cwConstantsWithLookupExampleMethodName(); |
| |
| String cwConstantsWithLookupExampleName(); |
| |
| String cwConstantsWithLookupExampleNoInput(); |
| |
| String cwConstantsWithLookupExampleNoMatches(); |
| |
| String cwConstantsWithLookupExampleResults(); |
| } |
| |
| /** |
| * A {@link TextBox} where the user can select a color to lookup. |
| */ |
| @ShowcaseData |
| private TextBox colorBox = null; |
| |
| /** |
| * The {@link ColorConstants} that map colors to values. |
| */ |
| private ColorConstants colorConstants = null; |
| |
| /** |
| * A {@link TextBox} where the results of the lookup are displayed. |
| */ |
| @ShowcaseData |
| private TextBox colorResultsBox = null; |
| |
| /** |
| * An instance of the constants. |
| */ |
| @ShowcaseData |
| private final CwConstants constants; |
| |
| /** |
| * Constructor. |
| * |
| * @param constants the constants |
| */ |
| public CwConstantsWithLookupExample(CwConstants constants) { |
| super(constants.cwConstantsWithLookupExampleName(), |
| constants.cwConstantsWithLookupExampleDescription(), false, |
| "ColorConstants.java", "ColorConstants.properties"); |
| this.constants = constants; |
| } |
| |
| /** |
| * Initialize this example. |
| */ |
| @ShowcaseSource |
| @Override |
| public Widget onInitialize() { |
| // Create the internationalized constants |
| colorConstants = GWT.create(ColorConstants.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(ColorConstants.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.cwConstantsWithLookupExampleLinkText())); |
| linkPanel.add(link); |
| layout.setWidget(0, 0, linkPanel); |
| formatter.setColSpan(0, 0, 2); |
| |
| // Add a field so the user can type a color |
| colorBox = new TextBox(); |
| colorBox.setText("red"); |
| colorBox.setWidth("17em"); |
| layout.setHTML(1, 0, constants.cwConstantsWithLookupExampleMethodName()); |
| layout.setWidget(1, 1, colorBox); |
| |
| // Show the last name |
| colorResultsBox = new TextBox(); |
| colorResultsBox.setEnabled(false); |
| colorResultsBox.setWidth("17em"); |
| layout.setHTML(2, 0, constants.cwConstantsWithLookupExampleResults()); |
| layout.setWidget(2, 1, colorResultsBox); |
| |
| // Add a handler to update the color as the user types a lookup value |
| colorBox.addKeyUpHandler(new KeyUpHandler() { |
| public void onKeyUp(KeyUpEvent event) { |
| updateColor(); |
| } |
| }); |
| |
| // Return the layout Widget |
| updateColor(); |
| return layout; |
| } |
| |
| @Override |
| protected void asyncOnInitialize(final AsyncCallback<Widget> callback) { |
| GWT.runAsync(CwConstantsWithLookupExample.class, new RunAsyncCallback() { |
| |
| public void onFailure(Throwable caught) { |
| callback.onFailure(caught); |
| } |
| |
| public void onSuccess() { |
| callback.onSuccess(onInitialize()); |
| } |
| }); |
| } |
| |
| /** |
| * Lookup the color based on the value the user entered. |
| */ |
| @ShowcaseSource |
| private void updateColor() { |
| String key = colorBox.getText().trim(); |
| if (key.equals("")) { |
| colorResultsBox.setText(constants.cwConstantsWithLookupExampleNoInput()); |
| } else { |
| try { |
| String color = colorConstants.getString(key); |
| colorResultsBox.setText(color); |
| } catch (MissingResourceException e) { |
| colorResultsBox.setText( |
| constants.cwConstantsWithLookupExampleNoMatches()); |
| } |
| } |
| } |
| } |