Java tutorial
/* * Ext GWT - Ext for GWT * Copyright(c) 2007-2009, Ext JS, LLC. * licensing@extjs.com * * http://extjs.com/license */ package com.centimia.gxt.sample.widgetdashboard.client; import java.util.ArrayList; import java.util.List; import java.util.Map; import com.extjs.gxt.samples.client.ExampleService; import com.extjs.gxt.samples.client.ExampleServiceAsync; import com.extjs.gxt.samples.client.ExamplesModel; import com.extjs.gxt.samples.client.FileService; import com.extjs.gxt.samples.client.FileServiceAsync; import com.extjs.gxt.samples.client.examples.model.Category; import com.extjs.gxt.samples.client.examples.model.Entry; import com.extjs.gxt.samples.resources.client.Resources; import com.extjs.gxt.themes.client.Slate; import com.extjs.gxt.ui.client.Registry; import com.extjs.gxt.ui.client.Style.LayoutRegion; import com.extjs.gxt.ui.client.Style.Scroll; import com.extjs.gxt.ui.client.core.FastMap; import com.extjs.gxt.ui.client.data.ModelData; import com.extjs.gxt.ui.client.event.Events; import com.extjs.gxt.ui.client.event.Listener; import com.extjs.gxt.ui.client.event.TreePanelEvent; import com.extjs.gxt.ui.client.store.TreeStore; import com.extjs.gxt.ui.client.util.Margins; import com.extjs.gxt.ui.client.util.ThemeManager; import com.extjs.gxt.ui.client.widget.ContentPanel; import com.extjs.gxt.ui.client.widget.HtmlContainer; import com.extjs.gxt.ui.client.widget.TabItem; import com.extjs.gxt.ui.client.widget.TabPanel; import com.extjs.gxt.ui.client.widget.Viewport; import com.extjs.gxt.ui.client.widget.custom.ThemeSelector; import com.extjs.gxt.ui.client.widget.layout.BorderLayout; import com.extjs.gxt.ui.client.widget.layout.BorderLayoutData; import com.extjs.gxt.ui.client.widget.layout.FitLayout; import com.extjs.gxt.ui.client.widget.treepanel.TreePanel; import com.google.gwt.core.client.EntryPoint; import com.google.gwt.core.client.GWT; import com.google.gwt.dom.client.Element; import com.google.gwt.dom.client.HeadElement; import com.google.gwt.dom.client.Node; import com.google.gwt.dom.client.NodeList; import com.google.gwt.i18n.client.LocaleInfo; import com.google.gwt.sample.showcase.client.StyleSheetLoader; import com.google.gwt.user.client.Command; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.rpc.ServiceDefTarget; import com.google.gwt.user.client.ui.RootPanel; public class WidgetDashboard implements EntryPoint, Command, Listener<TreePanelEvent<ModelData>> { public static boolean isExplorer() { String test = Window.Location.getPath(); if (test.indexOf("pages") != -1) { return false; } return true; } public static final String SERVICE = "service"; public static final String FILE_SERVICE = "fileservice"; public static final String MODEL = "model"; private Viewport viewport; private TreePanel<ModelData> tree; private TabPanel panel = new TabPanel(); private Map<String, Entry> examples = new FastMap<Entry>(); private ContentPanel demoPanel; public void onModuleLoad() { String styleSheetName = "resources/css/gxt-all.css"; if (LocaleInfo.getCurrentLocale().isRTL()) { styleSheetName = "resources/css/gxt-all-rtl.css"; } // Find existing style sheets that need to be removed boolean styleSheetsFound = false; final HeadElement headElem = StyleSheetLoader.getHeadElement(); final List<Element> toRemove = new ArrayList<Element>(); NodeList<Node> children = headElem.getChildNodes(); for (int i = 0; i < children.getLength(); i++) { Node node = children.getItem(i); if (node.getNodeType() == Node.ELEMENT_NODE) { Element elem = Element.as(node); if (elem.getTagName().equalsIgnoreCase("link") && elem.getPropertyString("rel").equalsIgnoreCase("stylesheet")) { styleSheetsFound = true; String href = elem.getPropertyString("href"); // If the correct style sheets are already loaded, then we should have // nothing to remove. if (!href.equals(styleSheetName) && href.indexOf("gxt") != -1) { toRemove.add(elem); } } } } // Return if we already have the correct style sheets if (styleSheetsFound && toRemove.size() != 0) { // Remove the old style sheets for (Element elem : toRemove) { headElem.removeChild(elem); } } ExampleServiceAsync service = (ExampleServiceAsync) GWT.create(ExampleService.class); ServiceDefTarget endpoint = (ServiceDefTarget) service; String moduleRelativeURL = SERVICE; endpoint.setServiceEntryPoint(moduleRelativeURL); Registry.register(SERVICE, service); FileServiceAsync fileservice = (FileServiceAsync) GWT.create(FileService.class); endpoint = (ServiceDefTarget) fileservice; moduleRelativeURL = FILE_SERVICE; endpoint.setServiceEntryPoint(moduleRelativeURL); Registry.register(FILE_SERVICE, fileservice); ExamplesModel model = new ExamplesModel(); for (int i = 0; i < model.getChildren().size(); i++) { Category cat = (Category) model.getChildren().get(i); for (int j = 0; j < cat.getChildren().size(); j++) { Entry entry = (Entry) cat.getChildren().get(j); examples.put(entry.getId(), entry); } } Registry.register(MODEL, model); viewport = new Viewport(); BorderLayout layout = new BorderLayout(); demoPanel = new ContentPanel(); demoPanel.setLayout(new BorderLayout()); viewport.setLayout(layout); createNorth(); createTree(); panel.setResizeTabs(true); panel.setMinTabWidth(115); panel.setAnimScroll(true); panel.setTabScroll(true); panel.setCloseContextMenu(true); replaceView("basicgrid"); demoPanel.add(panel, new BorderLayoutData(LayoutRegion.CENTER)); viewport.add(tree, new BorderLayoutData(LayoutRegion.WEST)); viewport.add(demoPanel, new BorderLayoutData(LayoutRegion.CENTER)); StyleSheetLoader.loadStyleSheet(styleSheetName, "ext-el-mask", this); } private void replaceView(String viewItem) { TabItem example = new TabItem("Example"); example.setScrollMode(Scroll.AUTO); Entry entry = null; if (viewItem == null) entry = examples.get("combobox"); else entry = examples.get(viewItem); if (entry == null) { return; } example.setTitle(entry.getName()); example.setText(entry.getName()); example.setClosable(true); if (entry.isFill()) { example.setLayout(new FitLayout()); example.setScrollMode(Scroll.NONE); } panel.add(example); example.add(entry.getExample()); panel.setSelection(example); } private void createTree() { ExamplesModel model = Registry.get(MODEL); TreeStore<ModelData> store = new TreeStore<ModelData>(); store.add(model.getChildren(), true); tree = new TreePanel<ModelData>(store); tree.setWidth(200); tree.setDisplayProperty("name"); tree.getStyle().setLeafIcon(Resources.ICONS.table()); tree.addListener(Events.OnClick, this); } public void execute() { RootPanel.getBodyElement().getStyle().setProperty("display", "none"); RootPanel.getBodyElement().getStyle().setProperty("display", ""); // Associate the Main panel with the HTML host page. RootPanel.get("viewport").add(viewport); } private void createNorth() { StringBuffer sb = new StringBuffer(); sb.append("<div id='demo-header' class='x-small-editor'><div id=demo-title>Ext GWT Examples</div></div>"); HtmlContainer northPanel = new HtmlContainer(sb.toString()); northPanel.setStateful(false); BorderLayoutData data = new BorderLayoutData(LayoutRegion.NORTH, 33); data.setMargins(new Margins()); viewport.add(northPanel, data); } public void handleEvent(TreePanelEvent<ModelData> be) { if (be.getItem() instanceof Entry) replaceView(((Entry) be.getItem()).getId()); } }