Java tutorial
/** * Copyright 2013 ArcBees 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.gwtplatform.carstore.client.application.widget.header; import java.util.Arrays; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.logical.shared.ValueChangeEvent; import com.google.gwt.uibinder.client.UiBinder; import com.google.gwt.uibinder.client.UiField; import com.google.gwt.uibinder.client.UiHandler; import com.google.gwt.user.cellview.client.CellList; import com.google.gwt.user.client.ui.Button; import com.google.gwt.user.client.ui.HTMLPanel; import com.google.gwt.user.client.ui.PopupPanel; import com.google.gwt.user.client.ui.ValuePicker; import com.google.gwt.user.client.ui.Widget; import com.google.inject.Inject; import com.gwtplatform.carstore.client.application.event.ChangeActionBarEvent.ActionType; import com.gwtplatform.carstore.client.application.renderer.EnumCell; import com.gwtplatform.carstore.client.resources.MobileNavigationListStyle; import com.gwtplatform.carstore.client.security.CurrentUser; import com.gwtplatform.carstore.shared.dto.UserDto; import com.gwtplatform.mvp.client.ViewWithUiHandlers; import com.gwtplatform.mvp.client.proxy.PlaceManager; import com.gwtplatform.mvp.client.proxy.PlaceRequest; public class HeaderMobileView extends ViewWithUiHandlers<HeaderUiHandlers> implements HeaderPresenter.MyView, UserInfoPopup.Handler { interface Binder extends UiBinder<Widget, HeaderMobileView> { } @UiField HTMLPanel actionBar; @UiField Button back; @UiField Button done; @UiField Button add; @UiField Button delete; @UiField Button edit; @UiField Button menu; @UiField(provided = true) ValuePicker<MenuItem> menuBar; private final UserInfoPopup userInfoPopup; private final PlaceManager placeManager; @Inject HeaderMobileView(Binder uiBinder, MobileNavigationListStyle listResources, PlaceManager placeManager, UserInfoPopup userInfoPopup) { this.placeManager = placeManager; this.userInfoPopup = userInfoPopup; CellList<MenuItem> placeList = new CellList<MenuItem>(new EnumCell<MenuItem>(), listResources); menuBar = new ValuePicker<MenuItem>(placeList); initWidget(uiBinder.createAndBindUi(this)); menuBar.setAcceptableValues(Arrays.asList(MenuItem.values())); menuBar.setValue(MenuItem.MANUFACTURER); userInfoPopup.setHandler(this); } @Override public void showActionBar(Boolean visible) { actionBar.setVisible(visible); menuBar.setVisible(visible); } @Override public void initActionBar(Boolean tabsVisible) { back.setVisible(!tabsVisible); menuBar.setVisible(tabsVisible); } @Override public void hideActionButtons() { done.setVisible(false); edit.setVisible(false); add.setVisible(false); delete.setVisible(false); } @Override public void showActionButton(ActionType actionType) { switch (actionType) { case ADD: add.setVisible(true); break; case DONE: done.setVisible(true); break; case UPDATE: edit.setVisible(true); break; case DELETE: delete.setVisible(true); break; } } @Override public void enableUserOptions(CurrentUser currentUser) { menu.setVisible(true); UserDto userDto = currentUser.getUser(); userInfoPopup.setUsername(userDto.getFirstName()); } @Override public void disableUserOptions() { menu.setVisible(false); } @Override public void onLogout() { getUiHandlers().logout(); } @UiHandler("menuBar") void onMenuItemChanged(ValueChangeEvent<MenuItem> event) { placeManager.revealPlace(new PlaceRequest.Builder().nameToken(menuBar.getValue().getPlaceToken()).build()); } @UiHandler("home") void onHomeClicked(ClickEvent event) { if (back.isVisible()) { getUiHandlers().onGoBack(); } } @UiHandler("back") void onBackClicked(ClickEvent event) { getUiHandlers().onGoBack(); } @UiHandler("done") void onDoneClicked(ClickEvent event) { getUiHandlers().onAction(ActionType.DONE); } @UiHandler("edit") void onUpdateClicked(ClickEvent event) { getUiHandlers().onAction(ActionType.UPDATE); } @UiHandler("add") void onAddClicked(ClickEvent event) { getUiHandlers().onAction(ActionType.ADD); } @UiHandler("delete") void onDeleteClicked(ClickEvent event) { getUiHandlers().onAction(ActionType.DELETE); } @UiHandler("menu") void onMenuClicked(ClickEvent event) { final Widget widget = (Widget) event.getSource(); userInfoPopup.setPopupPositionAndShow(new PopupPanel.PositionCallback() { @Override public void setPosition(int offsetWidth, int offsetHeight) { int left = widget.getAbsoluteLeft() - (userInfoPopup.getOffsetWidth() - widget.getOffsetWidth()); int top = widget.getAbsoluteTop() + widget.getOffsetHeight() + 10; userInfoPopup.setPopupPosition(left, top); } }); } }