285 lines
8.6 KiB
Java
285 lines
8.6 KiB
Java
package org.gcube.portlets.user.geoportaldataviewer.client.ui.customoverlays;
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import org.gcube.portlets.user.geoportaldataviewer.client.GeoportalDataViewerServiceAsync;
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import org.gcube.portlets.user.geoportaldataviewer.client.events.OverlayCustomLayerToMapEvent;
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import org.gcube.portlets.user.geoportaldataviewer.client.util.URLUtil;
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import org.gcube.portlets.user.geoportaldataviewer.shared.gis.LayerItem;
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import org.gcube.portlets.user.geoportaldataviewer.shared.gis.wms.GeoInformationForWMSRequest;
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import com.github.gwtbootstrap.client.ui.Button;
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import com.github.gwtbootstrap.client.ui.CheckBox;
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import com.github.gwtbootstrap.client.ui.ListBox;
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import com.github.gwtbootstrap.client.ui.constants.ButtonType;
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import com.google.gwt.core.client.GWT;
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import com.google.gwt.dom.client.Style.FontWeight;
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import com.google.gwt.event.dom.client.ChangeEvent;
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import com.google.gwt.event.dom.client.ChangeHandler;
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import com.google.gwt.event.dom.client.ClickEvent;
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import com.google.gwt.event.dom.client.ClickHandler;
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import com.google.gwt.event.dom.client.ErrorEvent;
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import com.google.gwt.event.dom.client.ErrorHandler;
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import com.google.gwt.event.dom.client.LoadEvent;
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import com.google.gwt.event.dom.client.LoadHandler;
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import com.google.gwt.event.logical.shared.ValueChangeEvent;
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import com.google.gwt.event.logical.shared.ValueChangeHandler;
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import com.google.gwt.event.shared.HandlerManager;
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import com.google.gwt.uibinder.client.UiBinder;
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import com.google.gwt.uibinder.client.UiField;
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import com.google.gwt.user.client.Window;
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import com.google.gwt.user.client.rpc.AsyncCallback;
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import com.google.gwt.user.client.ui.Composite;
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import com.google.gwt.user.client.ui.FlexTable;
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import com.google.gwt.user.client.ui.FlowPanel;
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import com.google.gwt.user.client.ui.HTML;
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import com.google.gwt.user.client.ui.HTMLPanel;
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import com.google.gwt.user.client.ui.HorizontalPanel;
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import com.google.gwt.user.client.ui.Image;
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import com.google.gwt.user.client.ui.Label;
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import com.google.gwt.user.client.ui.ScrollPanel;
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import com.google.gwt.user.client.ui.Widget;
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/**
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* The Class OverlayCustomLayerPanel.
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*
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* @author Francesco Mangiacrapa at ISTI-CNR francesco.mangiacrapa@isti.cnr.it
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*
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* May 15, 2023
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*/
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public class OverlayCustomLayerPanel extends Composite {
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public static String COLORSCALERANGE = "COLORSCALERANGE";
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@UiField
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HTMLPanel basePanel;
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@UiField
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HTMLPanel stylePanel;
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@UiField
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HTMLPanel styleListPanel;
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@UiField
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Button buttonLegend;
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@UiField
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ScrollPanel legendPanel;
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private CheckBox checkbox;
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private GeoInformationForWMSRequest geoInformation;
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private static OverlayCustomLayerPanelUiBinder uiBinder = GWT.create(OverlayCustomLayerPanelUiBinder.class);
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private ListBox listBoxStyles = new ListBox();
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private HandlerManager applicationBus;
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private LayerItem layerItem;
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/**
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* The Interface LayerCollectionPanelUiBinder.
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*
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* @author Francesco Mangiacrapa at ISTI-CNR francesco.mangiacrapa@isti.cnr.it
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*
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* Jan 16, 2023
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*/
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interface OverlayCustomLayerPanelUiBinder extends UiBinder<Widget, OverlayCustomLayerPanel> {
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}
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/**
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* Instantiates a new overlay custom layer panel.
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*
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* @param layerItem the layer item
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* @param applicationBus the application bus
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*/
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public OverlayCustomLayerPanel(LayerItem layerItem, HandlerManager applicationBus) {
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initWidget(uiBinder.createAndBindUi(this));
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this.applicationBus = applicationBus;
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this.layerItem = layerItem;
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buttonLegend.setType(ButtonType.LINK);
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legendPanel.setVisible(false);
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GWT.log("Found available layerItem " + layerItem);
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String label = layerItem.getTitle();
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final String layerName = layerItem.getName();
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checkbox = new CheckBox(label);
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checkbox.setId("gcubeCustomLayerSelector_" + layerName);
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checkbox.getElement().getStyle().setFontWeight(FontWeight.BOLD);
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checkbox.setChecked(true);
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checkbox.addValueChangeHandler(new ValueChangeHandler<Boolean>() {
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@Override
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public void onValueChange(ValueChangeEvent<Boolean> event) {
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GWT.log("CustomLayer selector flag changed to value : " + event.toDebugString());
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// String collectionID = ((CheckBox) event.getSource()).getId().replace("gcubeCollectionSelector_",
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// "");
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// GWT.log("Collection ID is : " + collectionID + ", event value: " +
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// event.getValue());
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if (event.getValue()) {
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// OPEN COLLECTION
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applicationBus.fireEvent(new OverlayCustomLayerToMapEvent(layerItem, OverlayCustomLayerToMapEvent.ACTION_TYPE.VISIBILITY, true));
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} else {
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// CLOSE COLLECTION
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legendPanel.clear();
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legendPanel.setVisible(false);
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applicationBus.fireEvent(new OverlayCustomLayerToMapEvent(layerItem, OverlayCustomLayerToMapEvent.ACTION_TYPE.VISIBILITY, false));
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}
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}
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});
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basePanel.add(checkbox);
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final String wmsLink = layerItem.getWmsLink();
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GeoportalDataViewerServiceAsync.Util.getInstance().parseWmsRequest(wmsLink, layerName,
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new AsyncCallback<GeoInformationForWMSRequest>() {
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@Override
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public void onFailure(Throwable caught) {
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Window.alert(caught.getMessage());
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}
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@Override
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public void onSuccess(GeoInformationForWMSRequest geoInfoWMS) {
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geoInformation = geoInfoWMS;
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GWT.log("Parsed WMS Request returned: " + geoInfoWMS);
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if (geoInfoWMS.getStyles() != null && geoInfoWMS.getStyles().getGeoStyles() != null) {
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if (geoInfoWMS.getStyles().getGeoStyles().size() > 0) {
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stylePanel.setVisible(true);
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listBoxStyles.clear();
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for (String styleName : geoInfoWMS.getStyles().getGeoStyles()) {
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listBoxStyles.addItem(styleName, styleName);
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}
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styleListPanel.add(listBoxStyles);
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}
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}
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listBoxStyles.addChangeHandler(new ChangeHandler() {
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@Override
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public void onChange(ChangeEvent event) {
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legendPanel.clear();
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legendPanel.setVisible(false);
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}
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});
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buttonLegend.addClickHandler(new ClickHandler() {
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@Override
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public void onClick(ClickEvent event) {
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GWT.log("is isToggle: " + buttonLegend.isToggle());
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GWT.log("is isToggled: " + buttonLegend.isToggled());
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if (legendPanel.isVisible()) {
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legendPanel.clear();
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legendPanel.setVisible(false);
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} else {
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legendPanel.setVisible(true);
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loadLegend(wmsLink);
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}
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}
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});
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}
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});
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}
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/**
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* Gets the checkbox.
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*
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* @return the checkbox
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*/
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public CheckBox getCheckbox() {
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return checkbox;
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}
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/**
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* Load legend.
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*
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* @param wmsLink the wms link
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*/
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private void loadLegend(String wmsLink) {
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legendPanel.clear();
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String theLayerName = geoInformation.getLayerName();
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final FlexTable flexTable = new FlexTable();
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legendPanel.add(flexTable);
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// Case no style found
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if (listBoxStyles.getSelectedValue() == null) {
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flexTable.setWidget(0, 0, new HTML("No style found"));
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return;
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}
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FlowPanel flow = new FlowPanel();
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flow.add(new HTMLPanel("Legend for: " + theLayerName));
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final HorizontalPanel hpLegend = new HorizontalPanel();
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String url = geoInformation.getBaseWmsServiceHost() + "?service=WMS&" + "version="
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+ URLUtil.getValueOfParameter("version", wmsLink) + "&" + "request=GetLegendGraphic&" + "layer="
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+ theLayerName;
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String styleName = null;
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try {
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styleName = listBoxStyles.getSelectedValue();
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} catch (Exception e) {
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}
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styleName = styleName != null && !styleName.isEmpty() ? styleName : "";
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if (!geoInformation.isNcWMS()) {
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url += "&format=image/png" + "&STYLE=" + styleName
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+ "&LEGEND_OPTIONS=forceRule:True;dx:0.2;dy:0.2;mx:0.2;my:0.2;fontStyle:bold;"
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+ "borderColor:000000;border:true;fontColor:000000;fontSize:14";
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} else {
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int isNcWmsStyle = styleName.indexOf("/");
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if (isNcWmsStyle != -1) {
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styleName = styleName.substring(isNcWmsStyle + 1, styleName.length());
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}
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url += "&palette=" + styleName;
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if (geoInformation.getMapWMSNoStandard() != null) {
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for (String key : geoInformation.getMapWMSNoStandard().keySet()) { // ADDING COLORSCALERANGE?
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if (key.compareToIgnoreCase(COLORSCALERANGE) == 0) {
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url += "&" + key + "=" + geoInformation.getMapWMSNoStandard().get(key);
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break;
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}
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}
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}
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}
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GWT.log(url);
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flexTable.setStyleName("layer-style-panel-table-legend");
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flexTable.setWidget(0, 0, new Label("Legend"));
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final Image legendImage = new Image(url);
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legendImage.addLoadHandler(new LoadHandler() {
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@Override
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public void onLoad(LoadEvent event) {
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}
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});
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legendImage.addErrorHandler(new ErrorHandler() {
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@Override
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public void onError(ErrorEvent event) {
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GWT.log("ErrorEvent ");
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flexTable.setWidget(0, 1, new HTML("Error on loading the style"));
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}
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});
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hpLegend.add(legendImage);
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flexTable.setWidget(0, 1, hpLegend);
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}
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}
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