Java tutorial
/******************************************************************************* * This file is part of OpenNMS(R). * * Copyright (C) 2011-2014 The OpenNMS Group, Inc. * OpenNMS(R) is Copyright (C) 1999-2014 The OpenNMS Group, Inc. * * OpenNMS(R) is a registered trademark of The OpenNMS Group, Inc. * * OpenNMS(R) is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as published * by the Free Software Foundation, either version 3 of the License, * or (at your option) any later version. * * OpenNMS(R) 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 Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with OpenNMS(R). If not, see: * http://www.gnu.org/licenses/ * * For more information contact: * OpenNMS(R) Licensing <license@opennms.org> * http://www.opennms.org/ * http://www.opennms.com/ *******************************************************************************/ package org.opennms.features.gwt.ksc.combobox.client.view; import java.util.List; import com.google.gwt.cell.client.AbstractSafeHtmlCell; import com.google.gwt.core.client.GWT; import com.google.gwt.dom.client.Style.Unit; import com.google.gwt.event.dom.client.ClickEvent; import com.google.gwt.event.dom.client.KeyCodes; import com.google.gwt.event.dom.client.KeyDownEvent; import com.google.gwt.event.dom.client.KeyDownHandler; import com.google.gwt.safehtml.shared.SafeHtml; import com.google.gwt.safehtml.shared.SafeHtmlBuilder; import com.google.gwt.text.shared.SafeHtmlRenderer; 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.uibinder.client.UiTemplate; import com.google.gwt.user.cellview.client.CellList; import com.google.gwt.user.cellview.client.SimplePager; import com.google.gwt.user.client.ui.Composite; import com.google.gwt.user.client.ui.FlowPanel; import com.google.gwt.user.client.ui.PopupPanel; import com.google.gwt.user.client.ui.PopupPanel.PositionCallback; import com.google.gwt.user.client.ui.Widget; import com.google.gwt.view.client.ListDataProvider; import com.google.gwt.view.client.SelectionChangeEvent; import com.google.gwt.view.client.SingleSelectionModel; import org.gwtbootstrap3.client.ui.Button; import org.gwtbootstrap3.client.ui.TextBox; public class KscComboboxViewImpl extends Composite implements KscComboboxView<KscReportDetail> { public class KscReportDetailCell extends AbstractSafeHtmlCell<KscReportDetail> { public KscReportDetailCell() { super(new SafeHtmlRenderer<KscReportDetail>() { @Override public SafeHtml render(final KscReportDetail reportDetail) { return new SafeHtml() { private static final long serialVersionUID = -5363136937302598352L; @Override public String asString() { // TODO Auto-generated method stub return reportDetail.getLabel(); } }; } @Override public void render(KscReportDetail reportDetail, SafeHtmlBuilder builder) { builder.appendEscaped(reportDetail.getLabel()); } }); } @Override protected void render(Context context, SafeHtml value, SafeHtmlBuilder sb) { sb.append(value); } } private static KscComboboxViewImplUiBinder uiBinder = GWT.create(KscComboboxViewImplUiBinder.class); @UiTemplate("KscComboboxViewImpl.ui.xml") interface KscComboboxViewImplUiBinder extends UiBinder<Widget, KscComboboxViewImpl> { } @UiField TextBox m_textBox; @UiField Button m_searchButton; CellList<KscReportDetail> m_reportList; SimplePager m_pager; PopupPanel m_popupPanel; private Presenter<KscReportDetail> m_presenter; private ListDataProvider<KscReportDetail> m_dataList; private SingleSelectionModel<KscReportDetail> m_selectionModel; public KscComboboxViewImpl() { initWidget(uiBinder.createAndBindUi(this)); m_textBox.addKeyDownHandler(new KeyDownHandler() { @Override public void onKeyDown(KeyDownEvent event) { if (event.getNativeKeyCode() == KeyCodes.KEY_ENTER) { if (m_presenter != null) { m_presenter.onEnterKeyEvent(); } } } }); m_selectionModel = new SingleSelectionModel<KscReportDetail>(); m_selectionModel.addSelectionChangeHandler(new SelectionChangeEvent.Handler() { @Override public void onSelectionChange(SelectionChangeEvent event) { m_presenter.onKscReportSelected(); } }); m_reportList = new CellList<KscReportDetail>(new KscReportDetailCell()); m_reportList.setPageSize(10); m_reportList.getElement().getStyle().setFontSize(12, Unit.PX); m_reportList.setSelectionModel(m_selectionModel); m_dataList = new ListDataProvider<KscReportDetail>(); m_dataList.addDataDisplay(m_reportList); m_pager = new SimplePager(); m_pager.setStyleName("onms-table-no-borders-margin"); m_pager.getElement().getStyle().setWidth(100, Unit.PCT); m_pager.setDisplay(m_reportList); FlowPanel flowPanel = new FlowPanel(); flowPanel.add(m_reportList); flowPanel.add(m_pager); m_popupPanel = new PopupPanel(); m_popupPanel.add(flowPanel); m_popupPanel.setAutoHideEnabled(true); m_popupPanel.setAnimationEnabled(true); m_popupPanel.setModal(false); m_popupPanel.getElement().getStyle().setBorderWidth(1, Unit.PX); m_popupPanel.getElement().getStyle().setBorderColor("#B5B8C8"); m_popupPanel.getElement().getStyle().setPadding(1, Unit.PX); } @Override public String getSearchText() { return m_textBox.getText(); } @Override public void setPresenter(Presenter<KscReportDetail> presenter) { m_presenter = presenter; } @Override public void setDataList(List<KscReportDetail> dataList) { m_dataList.setList(dataList); m_popupPanel.setPopupPositionAndShow(new PositionCallback() { @Override public void setPosition(int offsetWidth, int offsetHeight) { m_popupPanel.setWidth((getOffsetWidth() - 5) + "px"); m_popupPanel.setPopupPosition(getAbsoluteLeft(), getAbsoluteTop() + 24); } }); } @Override public KscReportDetail getSelectedReport() { return m_selectionModel.getSelectedObject(); } @UiHandler("m_searchButton") public void handleSearchButton(ClickEvent event) { m_presenter.onSearchButtonClicked(); } }