Java tutorial
/** * * geo-platform * Rich webgis framework * http://geo-platform.org * ==================================================================== * * Copyright (C) 2008-2019 geoSDI Group (CNR IMAA - Potenza - ITALY). * * This program is free software: you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. This program 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 General Public License * for more details. You should have received a copy of the GNU General * Public License along with this program. If not, see http://www.gnu.org/licenses/ * * ==================================================================== * * Linking this library statically or dynamically with other modules is * making a combined work based on this library. Thus, the terms and * conditions of the GNU General Public License cover the whole combination. * * As a special exception, the copyright holders of this library give you permission * to link this library with independent modules to produce an executable, regardless * of the license terms of these independent modules, and to copy and distribute * the resulting executable under terms of your choice, provided that you also meet, * for each linked independent module, the terms and conditions of the license of * that module. An independent module is a module which is not derived from or * based on this library. If you modify this library, you may extend this exception * to your version of the library, but you are not obligated to do so. If you do not * wish to do so, delete this exception statement from your version. */ package org.geosdi.geoplatform.gui.client.widget.form; import com.extjs.gxt.ui.client.Style.HorizontalAlignment; import com.extjs.gxt.ui.client.event.BaseEvent; import com.extjs.gxt.ui.client.event.ButtonEvent; import com.extjs.gxt.ui.client.event.ComponentEvent; import com.extjs.gxt.ui.client.event.Events; import com.extjs.gxt.ui.client.event.KeyListener; import com.extjs.gxt.ui.client.event.Listener; import com.extjs.gxt.ui.client.event.SelectionListener; import com.extjs.gxt.ui.client.widget.button.Button; import com.extjs.gxt.ui.client.widget.form.FieldSet; import com.extjs.gxt.ui.client.widget.layout.FormLayout; import com.extjs.gxt.ui.client.widget.treepanel.TreePanel; import com.google.gwt.event.dom.client.KeyCodes; import com.google.gwt.http.client.URL; import com.google.gwt.user.client.rpc.AsyncCallback; import com.google.gwt.user.client.rpc.HasRpcToken; import com.google.gwt.user.client.rpc.RpcTokenException; import com.google.gwt.user.client.rpc.XsrfToken; import com.google.gwt.user.client.rpc.XsrfTokenServiceAsync; import com.google.gwt.user.client.ui.AbstractImagePrototype; import org.geosdi.geoplatform.gui.action.ISave; import org.geosdi.geoplatform.gui.client.BasicWidgetResources; import org.geosdi.geoplatform.gui.client.LayerResources; import org.geosdi.geoplatform.gui.client.i18n.LayerModuleConstants; import org.geosdi.geoplatform.gui.client.i18n.buttons.ButtonsConstants; import org.geosdi.geoplatform.gui.client.i18n.kml.KMLErrorMessageConstants; import org.geosdi.geoplatform.gui.client.i18n.windows.WindowsConstants; import org.geosdi.geoplatform.gui.client.model.memento.save.bean.MementoSaveAddedLayers; import org.geosdi.geoplatform.gui.client.model.memento.save.MementoSaveOperations; import org.geosdi.geoplatform.gui.client.service.LayerRemote; import org.geosdi.geoplatform.gui.client.service.LayerRemoteAsync; import org.geosdi.geoplatform.gui.client.widget.SearchStatus.EnumSearchStatus; import org.geosdi.geoplatform.gui.client.widget.expander.GPLayerExpander; import org.geosdi.geoplatform.gui.client.widget.fileupload.GPExtensions; import org.geosdi.geoplatform.gui.client.widget.form.KmlUrlStatus.EnumKmlUrlStatus; import org.geosdi.geoplatform.gui.client.widget.tree.form.GPTreeFormWidget; import org.geosdi.geoplatform.gui.configuration.GPSecureStringTextField; import org.geosdi.geoplatform.gui.configuration.message.GeoPlatformMessage; import org.geosdi.geoplatform.gui.impl.view.LayoutManager; import org.geosdi.geoplatform.gui.model.tree.GPBeanTreeModel; import org.geosdi.geoplatform.gui.model.tree.GPLayerTreeModel; import org.geosdi.geoplatform.gui.regex.GPRegEx; import org.geosdi.geoplatform.gui.service.gwt.xsrf.GPXsrfTokenService; public class LoadKmlFromUrlWidget extends GPTreeFormWidget<GPLayerTreeModel> implements ISave<MementoSaveAddedLayers> { private GPSecureStringTextField urlText; private static final XsrfTokenServiceAsync xsrf = GPXsrfTokenService.Util.getInstance(); private static final LayerRemoteAsync layerRemote = LayerRemote.Util.getInstance(); // private Button buttonAdd; // private final VisitorAddElement addVisitor; private GPBeanTreeModel parentDestination; private final GPLayerExpander expander; // private String urlEncoding = ""; private String suggestion = ""; public LoadKmlFromUrlWidget(TreePanel<GPBeanTreeModel> theTree) { super(theTree, true); // addVisitor = new VisitorAddElement(); expander = new GPLayerExpander(theTree, this); } public void showForm() { if (!super.isInitialized()) { super.init(); } expander.checkNodeState(); } @Override public void initSize() { setHeadingHtml(LayerModuleConstants.INSTANCE.LoadKmlFromUrlWidget_headingText()); setSize(330, 170); } @Override public void initSizeFormPanel() { super.getFormPanel().setHeaderVisible(false); super.getFormPanel().setSize(280, 120); } @Override public void addComponentToForm() { super.fieldSet = new FieldSet(); super.fieldSet.setHeadingHtml(LayerModuleConstants.INSTANCE.LoadKmlFromUrlWidget_fieldSetHeadingText()); FormLayout layout = new FormLayout(); layout.setLabelWidth(40); super.fieldSet.setLayout(layout); urlText = new GPSecureStringTextField(); urlText.setFieldLabel(LayerModuleConstants.INSTANCE.urlLabelText()); this.addListenerToUrlText(); super.fieldSet.add(urlText); super.getFormPanel().add(super.fieldSet); super.saveStatus = new KmlUrlStatus(); super.saveStatus.setAutoWidth(true); super.getFormPanel().getButtonBar().add(super.saveStatus); super.getFormPanel().setButtonAlign(HorizontalAlignment.RIGHT); buttonAdd = new Button(ButtonsConstants.INSTANCE.addText(), AbstractImagePrototype.create(LayerResources.ICONS.addRasterLayer()), new SelectionListener<ButtonEvent>() { @Override public void componentSelected(ButtonEvent ce) { execute(); } }); buttonAdd.setEnabled(false); super.getFormPanel().addButton(buttonAdd); Button buttonCancel = new Button(ButtonsConstants.INSTANCE.cancelText(), AbstractImagePrototype.create(BasicWidgetResources.ICONS.cancel()), new SelectionListener<ButtonEvent>() { @Override public void componentSelected(ButtonEvent ce) { clearComponents(); } }); super.getFormPanel().addButton(buttonCancel); setFocusWidget(urlText); } private void addListenerToUrlText() { urlText.addListener(Events.OnPaste, new Listener() { @Override public void handleEvent(BaseEvent be) { if (checkUrl()) { // verifyUrl(false); // TODO Decomment } else { buttonAdd.disable(); setStatus(EnumKmlUrlStatus.STATUS_NO_CHECKED.getValue(), EnumKmlUrlStatus.STATUS_MESSAGE_NOT_CHECKED.getValue()); // suggestion); } } }); urlText.addKeyListener(new KeyListener() { @Override public void componentKeyUp(ComponentEvent event) { if (urlText.getValue() == null) { if ((event.getKeyCode() == KeyCodes.KEY_BACKSPACE) || (event.getKeyCode() == KeyCodes.KEY_DELETE)) { reset(); } } else { if (checkUrl()) { // verifyUrl(false); // TODO Decomment } else { setStatus(EnumKmlUrlStatus.STATUS_NO_CHECKED.getValue(), EnumKmlUrlStatus.STATUS_MESSAGE_NOT_CHECKED.getValue()); // suggestion); } } } @Override public void componentKeyPress(ComponentEvent event) { if ((event.getKeyCode() == KeyCodes.KEY_ENTER) && checkUrl()) { verifyUrl(true); } } }); } private void clearComponents() { reset(); super.hide(); } @Override public void reset() { buttonAdd.disable(); urlText.clear(); super.saveStatus.clearStatus(""); super.setFocusWidget(urlText); } @Override public void execute() { super.saveStatus.setBusy(LayerModuleConstants.INSTANCE.LoadKmlFromUrlWidget_statusAddingKMLText()); this.parentDestination = this.getTree().getSelectionModel().getSelectedItem(); // assert (this.getTree().isExpanded(parentDestination)) : "AddFolderWidget on execute: the parent folder must be expanded before the add operation"; \ // List<GPBeanTreeModel> rasterList = this.createRasterList(); // this.getTree().getStore().insert(parentDestination, rasterList, 0, true); // this.addVisitor.insertLayerElements(rasterList, parentDestination); // MementoSaveAddedLayers mementoSaveLayer = new MementoSaveAddedLayers(this); // mementoSaveLayer.setAddedLayers(MementoBuilder.generateMementoLayerList(rasterList)); // mementoSaveLayer.setDescendantMap(this.addVisitor.getFolderDescendantMap()); // GPLayerSaveCache.getInstance().add(mementoSaveLayer); clearComponents(); LayoutManager.getInstance().getStatusMap().setStatus( LayerModuleConstants.INSTANCE.LoadKmlFromUrlWidget_statusAddedKMLSuccessText(), EnumSearchStatus.STATUS_SEARCH.toString()); } @Override public void executeSave(final MementoSaveAddedLayers memento) { MementoSaveOperations.mementoSaveAddedLayer(memento, LayerModuleConstants.INSTANCE.LoadKmlFromUrlWidget_mementoSuccessMessageText(), LayerModuleConstants.INSTANCE.LoadKmlFromUrlWidget_mementoFailMessageText()); } private boolean checkUrl() { boolean check = false; suggestion = null; String url = urlText.getValue(); // System.out.println("*** URL:\n" + url + "\n"); if (url == null) { // If it is added the listener on Events.OnPaste, sometimes url is NULL System.out.println("URL is NULL"); return check; } url = url.replaceAll("[ ]+", ""); // Delete all spaces urlEncoding = URL.decodeQueryString(url); // Encoding into ASCII System.out.println("*** URL encoding:\n" + GPRegEx.printPrettyURL(urlEncoding)); if (!urlEncoding.startsWith("http://")) { suggestion = KMLErrorMessageConstants.INSTANCE.suggestionURLStartText(); } else if (GPRegEx.RE_FUSION_TABLES_URL.test(urlEncoding)) { // URL Fusion Tables if (!GPRegEx.RE_FUSION_TABLES_QS_QUERY.test(urlEncoding)) { suggestion = KMLErrorMessageConstants.INSTANCE.suggestionCheckFieldQueryText(); } else if (!GPRegEx.RE_FUSION_TABLES_QS_O.test(urlEncoding)) { suggestion = KMLErrorMessageConstants.INSTANCE.suggestionCheckFieldOText(); } else if (!GPRegEx.RE_FUSION_TABLES_QS_G.test(urlEncoding)) { suggestion = KMLErrorMessageConstants.INSTANCE.suggestionCheckFieldGText(); } } else if (!urlEncoding.toUpperCase().endsWith(GPExtensions.KML.toString())) { // URL direct KML suggestion = KMLErrorMessageConstants.INSTANCE.suggestionURLMustReferKMLText(); } if (suggestion == null) { // No suggestion -> NO syntax error check = true; suggestion = KMLErrorMessageConstants.INSTANCE.suggestionURLOKText(); } System.out.println("*** Suggestion = " + suggestion + "\n### ### ###"); return check; } private void verifyUrl(final boolean runExecute) { xsrf.getNewXsrfToken(new AsyncCallback<XsrfToken>() { @Override public void onFailure(Throwable caught) { try { throw caught; } catch (RpcTokenException e) { // Can be thrown for several reasons: // - duplicate session cookie, which may be a sign of a cookie // overwrite attack // - XSRF token cannot be generated because session cookie isn't // present } catch (Throwable e) { // unexpected } } @Override public void onSuccess(XsrfToken token) { ((HasRpcToken) layerRemote).setRpcToken(token); layerRemote.checkKmlUrl(urlEncoding, new AsyncCallback<Boolean>() { @Override public void onFailure(Throwable caught) { buttonAdd.disable(); GeoPlatformMessage.errorMessage(LayerModuleConstants.INSTANCE.errorCheckingURLTitleText(), WindowsConstants.INSTANCE.errorMakingConnectionBodyText()); LayoutManager.getInstance().getStatusMap().setStatus( LayerModuleConstants.INSTANCE.statusErrorCheckingURLText(), EnumSearchStatus.STATUS_NO_SEARCH.toString()); System.out.println("Error checking the WMS URL: " + caught.toString() + " data: " + caught.getMessage()); } @Override public void onSuccess(Boolean result) { if (result) { buttonAdd.enable(); setStatus(EnumKmlUrlStatus.STATUS_CHECKED.getValue(), EnumKmlUrlStatus.STATUS_MESSAGE_CHECKED.getValue()); if (runExecute) { // Iff the enter key is pressed execute(); } } else { buttonAdd.disable(); setStatus(EnumKmlUrlStatus.STATUS_CHECK_ERROR.getValue(), EnumKmlUrlStatus.STATUS_MESSAGE_CHECK_ERROR.getValue()); } } }); } }); } }