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.Date; import java.util.HashSet; import java.util.List; import java.util.Set; import org.opennms.features.poller.remote.gwt.client.FilterPanel.StatusSelectionChangedEvent; import org.opennms.features.poller.remote.gwt.client.location.LocationInfo; import com.google.gwt.core.client.GWT; import com.google.gwt.event.dom.client.ClickEvent; 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.i18n.client.DateTimeFormat; import com.google.gwt.i18n.client.DateTimeFormat.PredefinedFormat; import com.google.gwt.resources.client.CssResource; 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.client.Window; import com.google.gwt.user.client.ui.CheckBox; import com.google.gwt.user.client.ui.DockLayoutPanel; import com.google.gwt.user.client.ui.HorizontalPanel; import com.google.gwt.user.client.ui.Hyperlink; import com.google.gwt.user.client.ui.Label; import com.google.gwt.user.client.ui.RootPanel; import com.google.gwt.user.client.ui.SplitLayoutPanel; import com.google.gwt.user.client.ui.Widget; public class DefaultApplicationView implements ApplicationView, ResizeHandler { interface Binder extends UiBinder<DockLayoutPanel, DefaultApplicationView> { } private static final Binder BINDER = GWT.create(Binder.class); interface LinkStyles extends CssResource { String activeLink(); } @UiField protected LocationPanel locationPanel; @UiField protected DockLayoutPanel mainPanel; @UiField protected SplitLayoutPanel splitPanel; @UiField protected Hyperlink locationLink; @UiField protected Hyperlink applicationLink; @UiField protected Label updateTimestamp; @UiField protected LinkStyles linkStyles; @UiField protected HorizontalPanel statusesPanel; @UiField protected CheckBox statusDown; @UiField protected CheckBox statusDisconnected; @UiField protected CheckBox statusMarginal; @UiField protected CheckBox statusUp; @UiField protected CheckBox statusStopped; @UiField protected CheckBox statusUnknown; private final MapPanel m_mapPanel; private final HandlerManager m_eventBus; private Application m_presenter; static final DateTimeFormat UPDATE_TIMESTAMP_FORMAT = DateTimeFormat .getFormat(PredefinedFormat.DATE_TIME_MEDIUM); public DefaultApplicationView(Application presenter, HandlerManager eventBus, MapPanel mapPanel) { m_presenter = presenter; m_eventBus = eventBus; m_mapPanel = mapPanel; BINDER.createAndBindUi(this); locationPanel.setEventBus(eventBus); setupWindow(); } @UiHandler("statusDown") public void onDownClicked(final ClickEvent event) { getEventBus().fireEvent(new StatusSelectionChangedEvent(Status.DOWN, getStatusDown().getValue())); } @UiHandler("statusDisconnected") public void onDisconnectedClicked(final ClickEvent event) { getEventBus().fireEvent( new StatusSelectionChangedEvent(Status.DISCONNECTED, getStatusDisconnected().getValue())); } @UiHandler("statusMarginal") public void onMarginalClicked(final ClickEvent event) { getEventBus().fireEvent(new StatusSelectionChangedEvent(Status.MARGINAL, getStatusMarginal().getValue())); } @UiHandler("statusUp") public void onUpClicked(final ClickEvent event) { getEventBus().fireEvent(new StatusSelectionChangedEvent(Status.UP, getStatusUp().getValue())); } @UiHandler("statusStopped") public void onStoppedClicked(final ClickEvent event) { getEventBus().fireEvent(new StatusSelectionChangedEvent(Status.STOPPED, getStatusStopped().getValue())); } @UiHandler("statusUnknown") public void onUnknownClicked(final ClickEvent event) { getEventBus().fireEvent(new StatusSelectionChangedEvent(Status.UNKNOWN, getStatusUnknown().getValue())); } private HandlerManager getEventBus() { return m_eventBus; } private DockLayoutPanel getMainPanel() { return mainPanel; } private SplitLayoutPanel getSplitPanel() { return splitPanel; } private HorizontalPanel getStatusesPanel() { return statusesPanel; } private CheckBox getStatusDown() { return statusDown; } private CheckBox getStatusDisconnected() { return statusDisconnected; } private CheckBox getStatusMarginal() { return statusMarginal; } private CheckBox getStatusUp() { return statusUp; } private CheckBox getStatusStopped() { return statusStopped; } private CheckBox getStatusUnknown() { return statusUnknown; } private LocationPanel getLocationPanel() { return locationPanel; } private Hyperlink getLocationLink() { return locationLink; } private Hyperlink getApplicationLink() { return applicationLink; } private LinkStyles getLinkStyles() { return linkStyles; } private Label getUpdateTimestamp() { return updateTimestamp; } private Application getPresenter() { return m_presenter; } /** * <p>onApplicationClick</p> * * @param event a {@link com.google.gwt.event.dom.client.ClickEvent} object. */ @UiHandler("applicationLink") public void onApplicationClick(ClickEvent event) { if (getApplicationLink().getStyleName().contains(getLinkStyles().activeLink())) { // This link is already selected, do nothing } else { getPresenter().onApplicationViewSelected(); getApplicationLink().addStyleName(getLinkStyles().activeLink()); getLocationLink().removeStyleName(getLinkStyles().activeLink()); getLocationPanel().showApplicationList(); getLocationPanel().showApplicationFilters(true); getLocationPanel().resizeDockPanel(); } } /** * <p>onLocationClick</p> * * @param event a {@link com.google.gwt.event.dom.client.ClickEvent} object. */ @UiHandler("locationLink") public void onLocationClick(ClickEvent event) { if (getLocationLink().getStyleName().contains(getLinkStyles().activeLink())) { // This link is already selected, do nothing } else { getPresenter().onLocationViewSelected(); getLocationLink().addStyleName(getLinkStyles().activeLink()); getApplicationLink().removeStyleName(getLinkStyles().activeLink()); getLocationPanel().showLocationList(); getLocationPanel().showApplicationFilters(false); getLocationPanel().resizeDockPanel(); } } /* (non-Javadoc) * @see org.opennms.features.poller.remote.gwt.client.ApplicationView#updateTimestamp() */ @Override public void updateTimestamp() { getUpdateTimestamp().setText("Last update: " + UPDATE_TIMESTAMP_FORMAT.format(new Date())); } private Integer getAppHeight() { final com.google.gwt.dom.client.Element e = getMainPanel().getElement(); int extraHeight = e.getAbsoluteTop(); return Window.getClientHeight() - extraHeight; } /* (non-Javadoc) * @see org.opennms.features.poller.remote.gwt.client.ApplicationView#getSelectedStatuses() */ @Override public Set<Status> getSelectedStatuses() { Set<Status> statuses = new HashSet<Status>(); for (final Widget w : getStatusesPanel()) { if (w instanceof CheckBox) { final CheckBox cb = (CheckBox) w; if (cb.getValue()) { statuses.add(Status.valueOf(cb.getFormValue())); } } } return statuses; } private void setupWindow() { Window.setTitle("OpenNMS - Remote Monitor"); Window.enableScrolling(false); Window.setMargin("0px"); Window.addResizeHandler(this); } /* (non-Javadoc) * @see org.opennms.features.poller.remote.gwt.client.ApplicationView#initialize() */ @Override public void initialize() { getSplitPanel().add(getMapPanel().getWidget()); getSplitPanel().setWidgetMinSize(getLocationPanel(), 255); getMainPanel().setSize("100%", "100%"); RootPanel.get("map").add(getMainPanel()); updateTimestamp(); onLocationClick(null); onResize(null); } /* (non-Javadoc) * @see org.opennms.features.poller.remote.gwt.client.ApplicationView#updateSelectedApplications(java.util.Set) */ @Override public void updateSelectedApplications(Set<ApplicationInfo> applications) { getLocationPanel().updateSelectedApplications(applications); } /* (non-Javadoc) * @see org.opennms.features.poller.remote.gwt.client.ApplicationView#updateLocationList(java.util.ArrayList) */ @Override public void updateLocationList(List<LocationInfo> locationsForLocationPanel) { getLocationPanel().updateLocationList(locationsForLocationPanel); } /* (non-Javadoc) * @see org.opennms.features.poller.remote.gwt.client.ApplicationView#setSelectedTag(java.lang.String, java.util.List) */ @Override public void setSelectedTag(String selectedTag, List<String> allTags) { getLocationPanel().clearTagPanel(); getLocationPanel().addAllTags(allTags); getLocationPanel().selectTag(selectedTag); } /* (non-Javadoc) * @see org.opennms.features.poller.remote.gwt.client.ApplicationView#updateApplicationList(java.util.ArrayList) */ @Override public void updateApplicationList(List<ApplicationInfo> applications) { getLocationPanel().updateApplicationList(applications); } /* (non-Javadoc) * @see org.opennms.features.poller.remote.gwt.client.ApplicationView#updateApplicationNames(java.util.TreeSet) */ @Override public void updateApplicationNames(Set<String> allApplicationNames) { getLocationPanel().updateApplicationNames(allApplicationNames); } private MapPanel getMapPanel() { return m_mapPanel; } /* (non-Javadoc) * @see org.opennms.features.poller.remote.gwt.client.ApplicationView#fitMapToLocations(org.opennms.features.poller.remote.gwt.client.GWTBounds) */ @Override public void fitMapToLocations(GWTBounds locationBounds) { if (getMapPanel() instanceof SmartMapFit) { ((SmartMapFit) getMapPanel()).fitToBounds(); } else { //TODO: Zoom in to visible locations on startup getMapPanel().setBounds(locationBounds); } } /* (non-Javadoc) * @see org.opennms.features.poller.remote.gwt.client.ApplicationView#getMapBounds() */ @Override public GWTBounds getMapBounds() { return getMapPanel().getBounds(); } /* (non-Javadoc) * @see org.opennms.features.poller.remote.gwt.client.ApplicationView#showLocationDetails(java.lang.String, java.lang.String, java.lang.String) */ @Override public void showLocationDetails(final String locationName, String htmlTitle, String htmlContent) { getMapPanel().showLocationDetails(locationName, htmlTitle, htmlContent); } /* (non-Javadoc) * @see org.opennms.features.poller.remote.gwt.client.ApplicationView#placeMarker(org.opennms.features.poller.remote.gwt.client.GWTMarkerState) */ @Override public void placeMarker(final GWTMarkerState markerState) { getMapPanel().placeMarker(markerState); } @Override public void setStatusMessage(String statusMessage) { //getUpdateTimestamp().setText(statusMessage); } @Override public void onResize(ResizeEvent event) { getMainPanel().setHeight(getAppHeight().toString()); } }