| /* |
| * 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.cell; |
| |
| import com.google.gwt.cell.client.AbstractCell; |
| 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.resources.client.ClientBundle; |
| import com.google.gwt.resources.client.ImageResource; |
| import com.google.gwt.safehtml.shared.SafeHtmlBuilder; |
| 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.sample.showcase.client.content.cell.ContactDatabase.ContactInfo; |
| import com.google.gwt.uibinder.client.UiBinder; |
| import com.google.gwt.uibinder.client.UiField; |
| import com.google.gwt.user.cellview.client.CellList; |
| import com.google.gwt.user.cellview.client.HasKeyboardPagingPolicy.KeyboardPagingPolicy; |
| import com.google.gwt.user.cellview.client.HasKeyboardSelectionPolicy.KeyboardSelectionPolicy; |
| import com.google.gwt.user.client.rpc.AsyncCallback; |
| import com.google.gwt.user.client.ui.AbstractImagePrototype; |
| import com.google.gwt.user.client.ui.Button; |
| import com.google.gwt.user.client.ui.Widget; |
| import com.google.gwt.view.client.SelectionChangeEvent; |
| import com.google.gwt.view.client.SingleSelectionModel; |
| |
| /** |
| * Example file. |
| */ |
| @ShowcaseRaw({ |
| "ContactDatabase.java", "CwCellList.ui.xml", "ContactInfoForm.java", |
| "ShowMorePagerPanel.java", "RangeLabelPager.java"}) |
| public class CwCellList extends ContentWidget { |
| |
| /** |
| * The UiBinder interface used by this example. |
| */ |
| @ShowcaseSource |
| interface Binder extends UiBinder<Widget, CwCellList> { |
| } |
| |
| /** |
| * The constants used in this Content Widget. |
| */ |
| @ShowcaseSource |
| public static interface CwConstants extends Constants { |
| String cwCellListDescription(); |
| |
| String cwCellListName(); |
| } |
| |
| /** |
| * The images used for this example. |
| */ |
| @ShowcaseSource |
| static interface Images extends ClientBundle { |
| ImageResource contact(); |
| } |
| |
| /** |
| * The Cell used to render a {@link ContactInfo}. |
| */ |
| @ShowcaseSource |
| static class ContactCell extends AbstractCell<ContactInfo> { |
| |
| /** |
| * The html of the image used for contacts. |
| */ |
| private final String imageHtml; |
| |
| public ContactCell(ImageResource image) { |
| this.imageHtml = AbstractImagePrototype.create(image).getHTML(); |
| } |
| |
| @Override |
| public void render(Context context, ContactInfo value, SafeHtmlBuilder sb) { |
| // Value can be null, so do a null check.. |
| if (value == null) { |
| return; |
| } |
| |
| sb.appendHtmlConstant("<table>"); |
| |
| // Add the contact image. |
| sb.appendHtmlConstant("<tr><td rowspan='3'>"); |
| sb.appendHtmlConstant(imageHtml); |
| sb.appendHtmlConstant("</td>"); |
| |
| // Add the name and address. |
| sb.appendHtmlConstant("<td style='font-size:95%;'>"); |
| sb.appendEscaped(value.getFullName()); |
| sb.appendHtmlConstant("</td></tr><tr><td>"); |
| sb.appendEscaped(value.getAddress()); |
| sb.appendHtmlConstant("</td></tr></table>"); |
| } |
| } |
| |
| /** |
| * The contact form used to update contacts. |
| */ |
| @ShowcaseData |
| @UiField |
| ContactInfoForm contactForm; |
| |
| /** |
| * The button used to generate more contacts. |
| */ |
| @ShowcaseData |
| @UiField |
| Button generateButton; |
| |
| /** |
| * The pager used to change the range of data. |
| */ |
| @ShowcaseData |
| @UiField |
| ShowMorePagerPanel pagerPanel; |
| |
| /** |
| * The pager used to display the current range. |
| */ |
| @ShowcaseData |
| @UiField |
| RangeLabelPager rangeLabelPager; |
| |
| /** |
| * The CellList. |
| */ |
| @ShowcaseData |
| private CellList<ContactInfo> cellList; |
| |
| /** |
| * Constructor. |
| * |
| * @param constants the constants |
| */ |
| public CwCellList(CwConstants constants) { |
| super(constants.cwCellListName(), constants.cwCellListDescription(), false, |
| "ContactDatabase.java", "CwCellList.ui.xml", "ContactInfoForm.java", |
| "ShowMorePagerPanel.java", "RangeLabelPager.java"); |
| } |
| |
| /** |
| * Initialize this example. |
| */ |
| @ShowcaseSource |
| @Override |
| public Widget onInitialize() { |
| Images images = GWT.create(Images.class); |
| |
| // Create a CellList. |
| ContactCell contactCell = new ContactCell(images.contact()); |
| |
| // Set a key provider that provides a unique key for each contact. If key is |
| // used to identify contacts when fields (such as the name and address) |
| // change. |
| cellList = new CellList<ContactInfo>(contactCell, |
| ContactDatabase.ContactInfo.KEY_PROVIDER); |
| cellList.setPageSize(30); |
| cellList.setKeyboardPagingPolicy(KeyboardPagingPolicy.INCREASE_RANGE); |
| cellList.setKeyboardSelectionPolicy(KeyboardSelectionPolicy.BOUND_TO_SELECTION); |
| |
| // Add a selection model so we can select cells. |
| final SingleSelectionModel<ContactInfo> selectionModel = new SingleSelectionModel<ContactInfo>( |
| ContactDatabase.ContactInfo.KEY_PROVIDER); |
| cellList.setSelectionModel(selectionModel); |
| selectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() { |
| public void onSelectionChange(SelectionChangeEvent event) { |
| contactForm.setContact(selectionModel.getSelectedObject()); |
| } |
| }); |
| |
| // Create the UiBinder. |
| Binder uiBinder = GWT.create(Binder.class); |
| Widget widget = uiBinder.createAndBindUi(this); |
| |
| // Add the CellList to the data provider in the database. |
| ContactDatabase.get().addDataDisplay(cellList); |
| |
| // Set the cellList as the display of the pagers. This example has two |
| // pagers. pagerPanel is a scrollable pager that extends the range when the |
| // user scrolls to the bottom. rangeLabelPager is a pager that displays the |
| // current range, but does not have any controls to change the range. |
| pagerPanel.setDisplay(cellList); |
| rangeLabelPager.setDisplay(cellList); |
| |
| // Handle events from the generate button. |
| generateButton.addClickHandler(new ClickHandler() { |
| public void onClick(ClickEvent event) { |
| ContactDatabase.get().generateContacts(50); |
| } |
| }); |
| |
| return widget; |
| } |
| |
| @Override |
| protected void asyncOnInitialize(final AsyncCallback<Widget> callback) { |
| GWT.runAsync(CwCellList.class, new RunAsyncCallback() { |
| |
| public void onFailure(Throwable caught) { |
| callback.onFailure(caught); |
| } |
| |
| public void onSuccess() { |
| callback.onSuccess(onInitialize()); |
| } |
| }); |
| } |
| } |