| /* |
| * 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.text; |
| |
| 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.shared.AnyRtlDirectionEstimator; |
| 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.ShowcaseSource; |
| import com.google.gwt.sample.showcase.client.ShowcaseAnnotations.ShowcaseStyle; |
| import com.google.gwt.user.client.rpc.AsyncCallback; |
| import com.google.gwt.user.client.ui.HTML; |
| import com.google.gwt.user.client.ui.HorizontalPanel; |
| import com.google.gwt.user.client.ui.Label; |
| import com.google.gwt.user.client.ui.PasswordTextBox; |
| import com.google.gwt.user.client.ui.TextArea; |
| import com.google.gwt.user.client.ui.TextBox; |
| import com.google.gwt.user.client.ui.TextBoxBase; |
| import com.google.gwt.user.client.ui.VerticalPanel; |
| import com.google.gwt.user.client.ui.Widget; |
| |
| /** |
| * Example file. |
| */ |
| @ShowcaseStyle(/* css style names */{ |
| ".gwt-TextBox", ".gwt-PasswordTextBox", ".gwt-TextArea"}) |
| public class CwBasicText extends ContentWidget { |
| /** |
| * The constants used in this Content Widget. |
| */ |
| @ShowcaseSource |
| public static interface CwConstants extends Constants { |
| String cwBasicTextAreaLabel(); |
| |
| String cwBasicTextDescription(); |
| |
| String cwBasicTextName(); |
| |
| String cwBasicTextNormalLabel(); |
| |
| String cwBasicTextPasswordLabel(); |
| |
| String cwBasicTextReadOnly(); |
| |
| String cwBasicTextSelected(); |
| } |
| |
| /** |
| * An instance of the constants. |
| */ |
| @ShowcaseData |
| private final CwConstants constants; |
| |
| /** |
| * Constructor. |
| * |
| * @param constants the constants |
| */ |
| public CwBasicText(CwConstants constants) { |
| super( |
| constants.cwBasicTextName(), constants.cwBasicTextDescription(), true); |
| this.constants = constants; |
| } |
| |
| /** |
| * Initialize this example. |
| */ |
| @ShowcaseSource |
| @Override |
| public Widget onInitialize() { |
| // Create a panel to layout the widgets |
| VerticalPanel vpanel = new VerticalPanel(); |
| vpanel.setSpacing(5); |
| |
| // Add a normal and disabled text box |
| TextBox normalText = new TextBox(); |
| normalText.ensureDebugId("cwBasicText-textbox"); |
| // Set the normal text box to automatically adjust its direction according |
| // to the input text. Use the Any-RTL heuristic, which sets an RTL direction |
| // iff the text contains at least one RTL character. |
| normalText.setDirectionEstimator(AnyRtlDirectionEstimator.get()); |
| TextBox disabledText = new TextBox(); |
| disabledText.ensureDebugId("cwBasicText-textbox-disabled"); |
| disabledText.setText(constants.cwBasicTextReadOnly()); |
| disabledText.setEnabled(false); |
| vpanel.add(new HTML(constants.cwBasicTextNormalLabel())); |
| vpanel.add(createTextExample(normalText, true)); |
| vpanel.add(createTextExample(disabledText, false)); |
| |
| // Add a normal and disabled password text box |
| PasswordTextBox normalPassword = new PasswordTextBox(); |
| normalPassword.ensureDebugId("cwBasicText-password"); |
| PasswordTextBox disabledPassword = new PasswordTextBox(); |
| disabledPassword.ensureDebugId("cwBasicText-password-disabled"); |
| disabledPassword.setText(constants.cwBasicTextReadOnly()); |
| disabledPassword.setEnabled(false); |
| vpanel.add(new HTML("<br><br>" + constants.cwBasicTextPasswordLabel())); |
| vpanel.add(createTextExample(normalPassword, true)); |
| vpanel.add(createTextExample(disabledPassword, false)); |
| |
| // Add a text area |
| TextArea textArea = new TextArea(); |
| textArea.ensureDebugId("cwBasicText-textarea"); |
| textArea.setVisibleLines(5); |
| vpanel.add(new HTML("<br><br>" + constants.cwBasicTextAreaLabel())); |
| vpanel.add(createTextExample(textArea, true)); |
| |
| // Return the panel |
| return vpanel; |
| } |
| |
| @Override |
| protected void asyncOnInitialize(final AsyncCallback<Widget> callback) { |
| GWT.runAsync(CwBasicText.class, new RunAsyncCallback() { |
| |
| public void onFailure(Throwable caught) { |
| callback.onFailure(caught); |
| } |
| |
| public void onSuccess() { |
| callback.onSuccess(onInitialize()); |
| } |
| }); |
| } |
| |
| /** |
| * Create a TextBox example that includes the text box and an optional handler |
| * that updates a Label with the currently selected text. |
| * |
| * @param textBox the text box to handle |
| * @param addSelection add handlers to update label |
| * @return the Label that will be updated |
| */ |
| @ShowcaseSource |
| private HorizontalPanel createTextExample( |
| final TextBoxBase textBox, boolean addSelection) { |
| // Add the text box and label to a panel |
| HorizontalPanel hPanel = new HorizontalPanel(); |
| hPanel.setSpacing(4); |
| hPanel.add(textBox); |
| |
| // Add handlers |
| if (addSelection) { |
| // Create the new label |
| final Label label = new Label(constants.cwBasicTextSelected() + ": 0, 0"); |
| |
| // Add a KeyUpHandler |
| textBox.addKeyUpHandler(new KeyUpHandler() { |
| public void onKeyUp(KeyUpEvent event) { |
| updateSelectionLabel(textBox, label); |
| } |
| }); |
| |
| // Add a ClickHandler |
| textBox.addClickHandler(new ClickHandler() { |
| public void onClick(ClickEvent event) { |
| updateSelectionLabel(textBox, label); |
| } |
| }); |
| |
| // Add the label to the box |
| hPanel.add(label); |
| } |
| |
| // Return the panel |
| return hPanel; |
| } |
| |
| /** |
| * Update the text in one of the selection labels. |
| * |
| * @param textBox the text box |
| * @param label the label to update |
| */ |
| @ShowcaseSource |
| private void updateSelectionLabel(TextBoxBase textBox, Label label) { |
| label.setText( |
| constants.cwBasicTextSelected() + ": " + textBox.getCursorPos() + ", " |
| + textBox.getSelectionLength()); |
| } |
| } |