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Basic Focus Tabbing Sample (Smart GWT)

/*  * SmartGWT (GWT for SmartClient)  * Copyright 2008 and beyond, Isomorphic Software, Inc.  *  * SmartGWT is free software; you can redistribute it and/or modify it  * under the terms of the GNU Lesser General Public License version 3  * as published by the Free Software Foundation.  SmartGWT is also  * available under typical commercial license terms - see  * http://smartclient.com/license  * This software is distributed in the hope that it will be useful,  * but WITHOUT ANY WARRANTY; without even the implied warranty of  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU  * Lesser General Public License for more details.  */ package com.smartgwt.sample.showcase.client; import com.google.gwt.core.client.EntryPoint; import com.google.gwt.user.client.ui.RootPanel; import com.smartgwt.client.types.Alignment; import com.smartgwt.client.types.DragAppearance; import com.smartgwt.client.widgets.Canvas; import com.smartgwt.client.widgets.Img; import com.smartgwt.client.widgets.Label; import com.smartgwt.client.widgets.events.DrawEvent; import com.smartgwt.client.widgets.events.DrawHandler; import com.smartgwt.client.widgets.events.FocusChangedEvent; import com.smartgwt.client.widgets.events.FocusChangedHandler; import com.smartgwt.client.widgets.form.DynamicForm; import com.smartgwt.client.widgets.form.fields.ComboBoxItem; import com.smartgwt.client.widgets.form.fields.DateItem; import com.smartgwt.client.widgets.layout.HStack; import com.smartgwt.client.widgets.layout.VLayout; public class Showcase implements EntryPoint{     public void onModuleLoad() {        RootPanel.get().add(getViewPanel());     }     public Canvas getViewPanel() {       HStack hStack = new HStack();       hStack.setWidth(300);       hStack.setHeight(100);       hStack.setShowEdges(true);       hStack.setCanAcceptDrop(true);       hStack.setAnimateMembers(true);       hStack.setDropLineThickness(4);              final Label focusLabel = new Label();       focusLabel.setID("focusLabel");       focusLabel.setAlign(Alignment.CENTER);       focusLabel.setTop(150);       focusLabel.setWidth(300);       focusLabel.setHeight(50);              final Img bluePawn = new Img();       bluePawn.setID("bluePawn");       bluePawn.setLayoutAlign(Alignment.CENTER);       bluePawn.setWidth(48);       bluePawn.setHeight(48);       bluePawn.setCanFocus(true);       bluePawn.setSrc("pieces/48/pawn_blue.png");       bluePawn.setCanDragReposition(true);       bluePawn.setCanDrop(true);       bluePawn.setDragAppearance(DragAppearance.TARGET);       bluePawn.addDrawHandler(new DrawHandler() {     public void onDraw(DrawEvent event) {       bluePawn.focus();     }       });       bluePawn.addFocusChangedHandler(new FocusChangedHandler() {     public void onFocusChanged(FocusChangedEvent event) {       changeLabel(focusLabel, bluePawn.getID(), event.getHasFocus());     }       });       ComboBoxItem field1 = new ComboBoxItem();       field1.setName("field1");       field1.setValueMap("Option 1", "Option 2");              DateItem field2 = new DateItem();       field2.setName("field2");              final DynamicForm simpleForm = new DynamicForm();       simpleForm.setID("simpleForm");       simpleForm.setLayoutAlign(Alignment.CENTER);       simpleForm.setHeight(48);       simpleForm.setFields(field1, field2);       simpleForm.addFocusChangedHandler(new FocusChangedHandler() {     public void onFocusChanged(FocusChangedEvent event) {       changeLabel(focusLabel, simpleForm.getID(), event.getHasFocus());     }       });              final Img greenPawn = new Img();       greenPawn.setID("greenPawn");       greenPawn.setLayoutAlign(Alignment.CENTER);       greenPawn.setWidth(48);       greenPawn.setHeight(48);       greenPawn.setCanFocus(true);       greenPawn.setSrc("pieces/48/pawn_green.png");       greenPawn.setCanDragReposition(true);       greenPawn.setCanDrop(true);       greenPawn.setDragAppearance(DragAppearance.TARGET);       greenPawn.addFocusChangedHandler(new FocusChangedHandler() {     public void onFocusChanged(FocusChangedEvent event) {       changeLabel(focusLabel, greenPawn.getID(), event.getHasFocus());     }       });       hStack.addMember(bluePawn);       hStack.addMember(simpleForm);       hStack.addMember(greenPawn);              VLayout vLayout = new VLayout();       vLayout.setMembersMargin(10);       vLayout.addMember(hStack);       vLayout.addMember(focusLabel);              return vLayout;     }     private void changeLabel(Label label, String id, boolean hasFocus) {       if (hasFocus)         label.setContents(id + " has focus");         else           label.setContents("");     } }                  SmartGWT.zip( 9,880 k)