| /* |
| * Copyright 2010 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.i18n.client.LocaleInfo; |
| import com.google.gwt.i18n.shared.BidiFormatter; |
| import com.google.gwt.safehtml.shared.SafeHtmlUtils; |
| 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.HasVerticalAlignment; |
| import com.google.gwt.user.client.ui.HorizontalPanel; |
| import com.google.gwt.user.client.ui.TextBox; |
| import com.google.gwt.user.client.ui.Widget; |
| |
| /** |
| * Example file. |
| */ |
| @ShowcaseRaw({"BlogMessages.java", "BlogMessages.properties"}) |
| public class CwBidiFormatting extends ContentWidget { |
| /** |
| * The constants used in this Content Widget. |
| */ |
| @ShowcaseSource |
| public static interface CwConstants extends Constants { |
| String cwBidiFormattingArg0Label(); |
| |
| String cwBidiFormattingArg1Label(); |
| |
| String cwBidiFormattingArg2Label(); |
| |
| String cwBidiFormattingBidiFormattedLabel(); |
| |
| String cwBidiFormattingDescription(); |
| |
| String cwBidiFormattingLinkText(); |
| |
| String cwBidiFormattingName(); |
| |
| String cwBidiFormattingNonbidiFormattedLabel(); |
| |
| String cwBidiFormattingTemplateLabel(); |
| } |
| |
| /** |
| * The {@link TextBox} where the user enters argument 0. |
| */ |
| @ShowcaseData |
| private TextBox arg0Box = null; |
| |
| /** |
| * The {@link TextBox} where the user enters argument 1. |
| */ |
| @ShowcaseData |
| private TextBox arg1Box = null; |
| |
| /** |
| * The {@link TextBox} where the user enters argument 2. |
| */ |
| @ShowcaseData |
| private TextBox arg2Box = null; |
| |
| /** |
| * A {@link com.google.gwt.i18n.shared.BidiFormatter} instance used for |
| * bidi-formatting of user input. |
| */ |
| @ShowcaseData |
| private BidiFormatter bidiFormatter = |
| BidiFormatter.getInstanceForCurrentLocale(); |
| |
| /** |
| * An instance of the constants. |
| */ |
| @ShowcaseData |
| private final CwConstants constants; |
| |
| /** |
| * The blog messages used in this example. |
| */ |
| @ShowcaseData |
| private BlogMessages blogMessages = null; |
| |
| /** |
| * The {@link HTML} used to display the message. |
| */ |
| @ShowcaseData |
| private HTML message = null; |
| |
| /** |
| * The {@link HTML} used to display the bidi formatted message. |
| */ |
| @ShowcaseData |
| private HTML bidiFormattedMessage = null; |
| |
| /** |
| * Constructor. |
| * |
| * @param constants the constants |
| */ |
| public CwBidiFormatting(CwConstants constants) { |
| super(constants.cwBidiFormattingName(), |
| constants.cwBidiFormattingDescription(), false, "BlogMessages.java", |
| "BlogMessages.properties"); |
| this.constants = constants; |
| } |
| |
| /** |
| * Initialize this example. |
| */ |
| @ShowcaseSource |
| @Override |
| public Widget onInitialize() { |
| // Create the internationalized blog messages |
| blogMessages = GWT.create(BlogMessages.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(BlogMessages.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.cwBidiFormattingLinkText())); |
| linkPanel.add(link); |
| layout.setWidget(0, 0, linkPanel); |
| formatter.setColSpan(0, 0, 2); |
| |
| // Show the template for reference |
| String template = blogMessages.userComment("{0}", "{1}", "{2}"); |
| layout.setHTML(1, 0, constants.cwBidiFormattingTemplateLabel()); |
| layout.setHTML(1, 1, template); |
| |
| // Add argument 0 |
| arg0Box = new TextBox(); |
| // Using an initial value whose direction is opposite the locale's direction |
| // demonstrates the need for and effect of bidi formatting. |
| arg0Box.setText( |
| LocaleInfo.getCurrentLocale().isRTL() ? "Tom Bombadil" : "תומר גרין"); |
| layout.setHTML(2, 0, constants.cwBidiFormattingArg0Label()); |
| layout.setWidget(2, 1, arg0Box); |
| |
| // Add argument 1 |
| arg1Box = new TextBox(); |
| arg1Box.setText("16"); |
| layout.setHTML(3, 0, constants.cwBidiFormattingArg1Label()); |
| layout.setWidget(3, 1, arg1Box); |
| |
| // Add argument 2 |
| arg2Box = new TextBox(); |
| // Using an initial value whose direction is opposite the locale's direction |
| // demonstrates the need for and effect of bidi formatting. |
| arg2Box.setText(LocaleInfo.getCurrentLocale().isRTL() |
| ? "How deep is your love?" : "כמה חול יש בחוף?"); |
| layout.setHTML(4, 0, constants.cwBidiFormattingArg2Label()); |
| layout.setWidget(4, 1, arg2Box); |
| |
| // Add the unformatted message |
| message = new HTML(); |
| layout.setHTML(5, 0, constants.cwBidiFormattingNonbidiFormattedLabel()); |
| layout.setWidget(5, 1, message); |
| formatter.setVerticalAlignment(5, 0, HasVerticalAlignment.ALIGN_TOP); |
| |
| // Add the bidi formatted message |
| bidiFormattedMessage = new HTML(); |
| layout.setHTML(6, 0, constants.cwBidiFormattingBidiFormattedLabel()); |
| layout.setWidget(6, 1, bidiFormattedMessage); |
| formatter.setVerticalAlignment(6, 0, HasVerticalAlignment.ALIGN_TOP); |
| |
| // Add handlers to all of the argument boxes |
| KeyUpHandler keyUpHandler = new KeyUpHandler() { |
| public void onKeyUp(KeyUpEvent event) { |
| updateMessages(); |
| } |
| }; |
| arg0Box.addKeyUpHandler(keyUpHandler); |
| arg1Box.addKeyUpHandler(keyUpHandler); |
| arg2Box.addKeyUpHandler(keyUpHandler); |
| |
| // Return the layout Widget |
| updateMessages(); |
| |
| return layout; |
| } |
| |
| @Override |
| protected void asyncOnInitialize(final AsyncCallback<Widget> callback) { |
| GWT.runAsync(CwBidiFormatting.class, new RunAsyncCallback() { |
| |
| public void onFailure(Throwable caught) { |
| callback.onFailure(caught); |
| } |
| |
| public void onSuccess() { |
| callback.onSuccess(onInitialize()); |
| } |
| }); |
| } |
| |
| /** |
| * Update the formatted message. |
| */ |
| @ShowcaseSource |
| private void updateMessages() { |
| String arg0 = arg0Box.getText().trim(); |
| String arg1 = arg1Box.getText().trim(); |
| String arg2 = arg2Box.getText().trim(); |
| message.setText(blogMessages.userComment(arg0, arg1, arg2)); |
| |
| bidiFormattedMessage.setHTML( |
| blogMessages.userComment(bidiFormatter.spanWrap(arg0), |
| // arg1 is intended to be an unsigned number, so bidi formatting is not |
| // needed. However, HTML escaping is a must to avoid an XSS attack hole! |
| SafeHtmlUtils.htmlEscape(arg1), bidiFormatter.spanWrap(arg2))); |
| } |
| } |