Java tutorial
/******************************************************************************* * This file is part of OpenNMS(R). * * Copyright (C) 2010-2014 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.poller.remote.gwt.client; import java.util.ArrayList; import java.util.Collection; import java.util.Collections; import java.util.Comparator; import java.util.List; import java.util.Set; import java.util.TreeSet; import org.opennms.features.poller.remote.gwt.client.TagPanel.TagResizeEvent; import org.opennms.features.poller.remote.gwt.client.TagPanel.TagResizeEventHandler; import org.opennms.features.poller.remote.gwt.client.events.LocationPanelSelectEvent; import org.opennms.features.poller.remote.gwt.client.events.LocationPanelSelectEventHandler; import org.opennms.features.poller.remote.gwt.client.location.LocationInfo; import com.google.gwt.core.client.GWT; import com.google.gwt.dom.client.Style.Unit; import com.google.gwt.event.logical.shared.ResizeEvent; import com.google.gwt.event.logical.shared.ResizeHandler; import com.google.gwt.event.shared.HandlerManager; import com.google.gwt.event.shared.HandlerRegistration; import com.google.gwt.uibinder.client.UiBinder; import com.google.gwt.uibinder.client.UiField; import com.google.gwt.user.client.Element; import com.google.gwt.user.client.Window; import com.google.gwt.user.client.ui.Composite; import com.google.gwt.user.client.ui.FlowPanel; import com.google.gwt.user.client.ui.HTMLPanel; import com.google.gwt.user.client.ui.RequiresResize; import com.google.gwt.user.client.ui.Widget; /** * <p>LocationPanel class.</p> * * @author ranger * @version $Id: $ * @since 1.8.1 */ public class LocationPanel extends Composite implements LocationPanelSelectEventHandler, TagResizeEventHandler, RequiresResize, ResizeHandler { interface Binder extends UiBinder<Widget, LocationPanel> { } private static final Binder BINDER = GWT.create(Binder.class); private transient HandlerManager m_eventBus; private transient List<HandlerRegistration> eventRegistrations = new ArrayList<HandlerRegistration>(); @UiField FlowPanel locationPanel; @UiField PageableLocationList locationList; @UiField PageableApplicationList applicationList; @UiField FilterPanel filterPanel; @UiField TagPanel tagPanel; @UiField HTMLPanel filterOptionsPanel; @UiField FlowPanel listsPanel; /** * <p>Constructor for LocationPanel.</p> */ public LocationPanel() { super(); initWidget(BINDER.createAndBindUi(this)); locationList.addLocationPanelSelectEventHandler(this); // Blank out the selected applications list this.updateSelectedApplications(new TreeSet<ApplicationInfo>()); Window.addResizeHandler(this); listsPanel.getElement().setId("listsPanel"); locationList.getElement().setId("locationList"); applicationList.getElement().setId("applicationList"); } /** * <p>setEventBus</p> * * @param eventBus a {@link com.google.gwt.event.shared.HandlerManager} object. */ public void setEventBus(final HandlerManager eventBus) { // Remove any existing handler registrations for (HandlerRegistration registration : eventRegistrations) { registration.removeHandler(); } m_eventBus = eventBus; m_eventBus.addHandler(TagResizeEvent.TYPE, this); filterPanel.setEventBus(eventBus); tagPanel.setEventBus(eventBus); applicationList.setEventBus(eventBus); // eventRegistrations.add(m_eventBus.addHandler(MapPanelBoundsChangedEvent.TYPE, this)); // eventRegistrations.add(m_eventBus.addHandler(LocationsUpdatedEvent.TYPE, this)); } /** {@inheritDoc} */ @Override public void onLocationSelected(final LocationPanelSelectEvent event) { m_eventBus.fireEvent(event); } /** * Switches view to Pageable Location List */ public void showLocationList() { setVisible(locationList.getElement(), true); setVisible(applicationList.getElement(), false); locationList.refreshLocationListResize(); } /** * Switches view to the Pageable Application List */ public void showApplicationList() { setVisible(locationList.getElement(), false); setVisible(applicationList.getElement(), true); applicationList.refreshApplicationListResize(); } /** * <p>updateSelectedApplications</p> * * @param selectedApplications a {@link java.util.Set} object. */ public void updateSelectedApplications(final Set<ApplicationInfo> selectedApplications) { filterPanel.updateSelectedApplications(selectedApplications); applicationList.updateSelectedApplications(selectedApplications); //Trigger the resize of the panel resizeDockPanel(); } /** * <p>updateApplicationNames</p> * * @param allApplicationNames a {@link java.util.Set} object. */ public void updateApplicationNames(final Set<String> allApplicationNames) { filterPanel.updateApplicationNames(allApplicationNames); } /** * <p>updateApplicationList</p> * * @param appList a {@link java.util.ArrayList} object. */ public void updateApplicationList(final List<ApplicationInfo> appList) { Collections.sort(appList, new Comparator<ApplicationInfo>() { @Override public int compare(ApplicationInfo o1, ApplicationInfo o2) { return -1 * o1.compareTo(o2); } }); applicationList.updateList(appList); } /** * <p>updateLocationList</p> * * @param visibleLocations a {@link java.util.ArrayList} object. */ public void updateLocationList(final List<LocationInfo> visibleLocations) { Collections.sort(visibleLocations, new Comparator<LocationInfo>() { @Override public int compare(LocationInfo o1, LocationInfo o2) { return -1 * o1.compareTo(o2); } }); locationList.updateList(visibleLocations); resizeDockPanel(); } /** * <p>selectTag</p> * * @param tag a {@link java.lang.String} object. */ public void selectTag(String tag) { tagPanel.selectTag(tag); } /** * <p>clearTagPanel</p> */ public void clearTagPanel() { tagPanel.clear(); } /** * <p>addAllTags</p> * * @param tags a {@link java.util.Collection} object. * @return a boolean. */ public boolean addAllTags(final Collection<String> tags) { return tagPanel.addAll(tags); } /** * <p>showApplicationFilters</p> * * @param isApplicationView a boolean. */ public void showApplicationFilters(boolean isApplicationView) { filterPanel.showApplicationFilters(isApplicationView); } /** * <p>resizeDockPanel</p> */ public void resizeDockPanel() { int verticalSpacer = 3; Element element = listsPanel.getElement(); if (getUserAgent().contains("msie")) { int newHeight = 100; if (locationPanel.getOffsetHeight() > 1) { newHeight = locationPanel.getOffsetHeight() - (tagPanel.getOffsetHeight() + filterPanel.getOffsetHeight() + verticalSpacer); } element.getStyle().setHeight(newHeight, Unit.PX); } else { int newTop = tagPanel.getOffsetHeight() + filterPanel.getOffsetHeight() + verticalSpacer; element.getStyle().setTop(newTop, Unit.PX); } } /** * <p>onTagPanelResize</p> */ @Override public void onTagPanelResize() { resizeDockPanel(); } /** * <p>onResize</p> */ @Override public void onResize() { if (applicationList.isVisible()) { applicationList.refreshApplicationListResize(); } else if (locationList.isVisible()) { locationList.refreshLocationListResize(); } } @Override public void onResize(ResizeEvent event) { resizeDockPanel(); } public static native String getUserAgent() /*-{ return navigator.userAgent.toLowerCase(); }-*/; }