Java tutorial
/* (c) 2014 Open Source Geospatial Foundation - all rights reserved * (c) 2001 - 2013 OpenPlans * This code is licensed under the GPL 2.0 license, available at the root * application directory. */ package org.geoserver.importer.web; import static org.geoserver.ows.util.ResponseUtils.urlEncode; import java.awt.Toolkit; import java.awt.datatransfer.StringSelection; import java.io.ByteArrayOutputStream; import java.io.PrintWriter; import java.io.Serializable; import java.util.ArrayList; import java.util.List; import java.util.logging.Level; import java.util.logging.Logger; import org.apache.wicket.AttributeModifier; import org.apache.wicket.Component; import org.apache.wicket.PageParameters; import org.apache.wicket.ResourceReference; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.ajax.markup.html.AjaxLink; import org.apache.wicket.ajax.markup.html.form.AjaxSubmitLink; import org.apache.wicket.behavior.SimpleAttributeModifier; import org.apache.wicket.extensions.ajax.markup.html.modal.ModalWindow; import org.apache.wicket.markup.html.WebMarkupContainer; import org.apache.wicket.markup.html.basic.Label; import org.apache.wicket.markup.html.form.ChoiceRenderer; import org.apache.wicket.markup.html.form.DropDownChoice; import org.apache.wicket.markup.html.form.Form; import org.apache.wicket.markup.html.form.TextArea; import org.apache.wicket.markup.html.link.ExternalLink; import org.apache.wicket.markup.html.link.Link; import org.apache.wicket.markup.html.panel.FeedbackPanel; import org.apache.wicket.markup.html.panel.Panel; import org.apache.wicket.markup.repeater.DefaultItemReuseStrategy; import org.apache.wicket.markup.repeater.data.DataView; import org.apache.wicket.model.IChainingModel; import org.apache.wicket.model.IModel; import org.apache.wicket.model.Model; import org.apache.wicket.model.PropertyModel; import org.apache.wicket.model.StringResourceModel; import org.geoserver.catalog.FeatureTypeInfo; import org.geoserver.catalog.LayerInfo; import org.geoserver.web.GeoServerApplication; import org.geoserver.web.demo.PreviewLayer; import org.geoserver.web.wicket.CRSPanel; import org.geoserver.web.wicket.GeoServerDataProvider; import org.geoserver.web.wicket.GeoServerDataProvider.Property; import org.geoserver.web.wicket.GeoServerDialog; import org.geoserver.web.wicket.GeoServerDialog.DialogDelegate; import org.geoserver.web.wicket.GeoServerTablePanel; import org.geoserver.web.wicket.Icon; import org.geoserver.web.wicket.ParamResourceModel; import org.geoserver.web.wicket.SRSToCRSModel; import org.geoserver.web.wicket.SimpleAjaxLink; import org.geotools.geometry.jts.ReferencedEnvelope; import org.geotools.referencing.CRS; import org.geotools.util.logging.Logging; import org.geoserver.importer.ImportTask; import org.geoserver.importer.Importer; import org.geoserver.importer.web.ImportPage.DataIconModel; import org.opengis.referencing.crs.CoordinateReferenceSystem; import org.opengis.referencing.FactoryException; public class ImportTaskTable extends GeoServerTablePanel<ImportTask> { static Logger LOGGER = Logging.getLogger(Importer.class); static CoordinateReferenceSystem EPSG_3857() throws FactoryException { return CRS.decode("EPSG:3857"); } ModalWindow popupWindow; GeoServerDialog dialog; FeedbackPanel feedbackPanel; public ImportTaskTable(String id, GeoServerDataProvider<ImportTask> dataProvider, boolean selectable) { super(id, dataProvider, selectable); add(dialog = new GeoServerDialog("dialog")); add(popupWindow = new ModalWindow("popup")); ((DataView) get("listContainer:items")).setItemReuseStrategy(DefaultItemReuseStrategy.getInstance()); } public ImportTaskTable setFeedbackPanel(FeedbackPanel feedbackPanel) { this.feedbackPanel = feedbackPanel; return this; } @Override protected Component getComponentForProperty(String id, final IModel itemModel, Property property) { if (property == ImportTaskProvider.NAME) { return new LayerLinkPanel(id, itemModel); } if (property == ImportTaskProvider.STATUS) { ImportTask.State state = (ImportTask.State) property.getModel(itemModel).getObject(); Component c = null; if (state == ImportTask.State.ERROR) { c = new SimpleAjaxLink<ImportTask>(id, itemModel, new StatusDescriptionModel(property.getModel(itemModel))) { @Override protected void onClick(AjaxRequestTarget target) { popupWindow.setContent( new ExceptionPanel(popupWindow.getContentId(), getModelObject().getError())); popupWindow.show(target); } }; } else { c = new Label(id, new StatusDescriptionModel(property.getModel(itemModel))); } String cssClass = new StatusIconModel(property.getModel(itemModel)).getCssClass(); return c.add(new SimpleAttributeModifier("class", cssClass)); } if (property == ImportTaskProvider.ACTION) { ImportTask.State state = (ImportTask.State) property.getModel(itemModel).getObject(); switch (state) { case COMPLETE: //link to map preview return new LayerPreviewPanel(id, itemModel); case NO_CRS: //provide link to choose crs return new NoCRSPanel(id, itemModel); //return createFixCRSLink(id, itemModel); case READY: //return advanced option link //for now disable if this is not a vector layer ImportTask task = (ImportTask) itemModel.getObject(); if (task.getLayer() != null && task.getLayer().getResource() instanceof FeatureTypeInfo) { return new AdvancedOptionPanel(id, itemModel); } return new WebMarkupContainer(id); default: return new WebMarkupContainer(id); } } return null; } @SuppressWarnings("unchecked") SimpleAjaxLink createFixCRSLink(String id, final IModel<ImportTask> itemModel) { return new SimpleAjaxLink(id, new Model("Fix...")) { @Override protected void onClick(AjaxRequestTarget target) { dialog.showOkCancel(target, new DialogDelegate() { @Override protected boolean onSubmit(AjaxRequestTarget target, Component contents) { ImporterWebUtils.importer().changed(itemModel.getObject()); target.addComponent(ImportTaskTable.this); return true; } @Override protected Component getContents(String id) { return new NoCRSPanel(id, new SRSToCRSModel(new PropertyModel(itemModel, "layer.resource.sRS"))); } }); } }; } protected void onItemFixed(ImportTask task, AjaxRequestTarget target) { selectObject(task); target.addComponent(this); onSelectionUpdate(target); } static abstract class StatusModel<T> implements IChainingModel<T> { IModel chained; protected StatusModel(IModel model) { this.chained = model; } public void setObject(T object) { } public void detach() { chained.detach(); } public void setChainedModel(IModel<?> model) { this.chained = model; } public IModel<?> getChainedModel() { return chained; } } static class StatusIconModel extends StatusModel<ResourceReference> { StatusIconModel(IModel model) { super(model); } public ResourceReference getObject() { ImportTask.State state = (ImportTask.State) chained.getObject(); switch (state) { case READY: return new ResourceReference(GeoServerApplication.class, "img/icons/silk/bullet_go.png"); case RUNNING: return new ResourceReference(ImportTaskTable.class, "indicator.gif"); case COMPLETE: return new ResourceReference(GeoServerApplication.class, "img/icons/silk/accept.png"); case NO_BOUNDS: case NO_CRS: case NO_FORMAT: case BAD_FORMAT: return new ResourceReference(GeoServerApplication.class, "img/icons/silk/error.png"); case ERROR: return new ResourceReference(GeoServerApplication.class, "img/icons/silk/delete.png"); } return null; } public String getCssClass() { ImportTask.State state = (ImportTask.State) chained.getObject(); switch (state) { case READY: return "apply-link"; case RUNNING: return "working-link"; case COMPLETE: return "accept-link"; case NO_BOUNDS: case NO_CRS: case ERROR: case NO_FORMAT: case BAD_FORMAT: return "warning-link"; //case ERROR: // return "error-link"; case CANCELED: return "cancel-link"; } return ""; } } class StatusDescriptionModel extends StatusModel<String> { StatusDescriptionModel(IModel model) { super(model); } public String getObject() { ImportTask.State state = (ImportTask.State) chained.getObject(); return new StringResourceModel(state.name().toLowerCase(), ImportTaskTable.this, null).getString(); } } // class FormatDelegate extends DialogDelegate { // // LayerSummary layer; // // public FormatDelegate(LayerSummary layer) { // this.layer = layer; // } // // @Override // protected Component getContents(String id) { // // TODO Auto-generated method stub // return null; // } // // @Override // protected boolean onSubmit(AjaxRequestTarget target, Component contents) { // // } // } // static class FormatPanel extends Panel { // // public FormatPanel(String id, IModel model) { // super(id); // add(new FormatDropDownChoice("format", model).add( // new AjaxFormComponentUpdatingBehavior("onchange") { // @Override // protected void onUpdate(AjaxRequestTarget target) {} // })); // add(new AjaxLink("apply") { // @Override // public void onClick(AjaxRequestTarget target) { // onApply(target); // } // }); // } // // protected void onApply(AjaxRequestTarget target) { // } // } // // static class FormatDropDownChoice extends DropDownChoice<LayerFormat> { // // public FormatDropDownChoice(String id, IModel model) { // super(id, model, new FormatsModel()); // setChoiceRenderer(new IChoiceRenderer<LayerFormat>() { // public Object getDisplayValue(LayerFormat object) { // return getIdValue(object, -1); // } // // public String getIdValue(LayerFormat object, int index) { // return object.getName(); // } // }); // } // } // // static class FormatsModel extends LoadableDetachableModel<List<LayerFormat>> { // // @Override // protected List<LayerFormat> load() { // return LayerFormat.all(); // } // // } // class NoCRSPanel extends Panel { public NoCRSPanel(String id, final IModel<ImportTask> model) { super(id, model); Form form = new Form("form"); add(form); form.add(new CRSPanel("crs", new SRSToCRSModel(new PropertyModel(model, "layer.resource.sRS"))) { @Override protected CoordinateReferenceSystem fromSRS(String srs) { try { return CRS.decode(srs); } catch (Exception e) { error(e); return null; } } }); form.add(new AjaxSubmitLink("apply") { @Override protected void onError(AjaxRequestTarget target, Form<?> form) { target.addComponent(feedbackPanel); } @Override protected void onSubmit(AjaxRequestTarget target, Form<?> form) { target.addComponent(feedbackPanel); ImportTask item = model.getObject(); ImporterWebUtils.importer().changed(item); //ImportItemTable.this.modelChanged(); target.addComponent(ImportTaskTable.this); onItemFixed(item, target); } }); } } static class LayerLinkPanel extends Panel { public LayerLinkPanel(String id, final IModel<ImportTask> model) { super(id); add(new Link<ImportTask>("link", model) { @Override public void onClick() { ImportTask task = getModelObject(); PageParameters pp = new PageParameters(); pp.put("id", task.getContext().getId()); setResponsePage(new LayerPage(task.getLayer(), pp) { protected void onSuccessfulSave() { super.onSuccessfulSave(); //update the item ImporterWebUtils.importer().changed(model.getObject()); }; }); } }.add(new Label("name", new PropertyModel(model, "layer.name"))) .add(new Icon("icon", new DataIconModel(model.getObject().getData())))); } } class LayerPreviewPanel extends Panel { public LayerPreviewPanel(String id, IModel<ImportTask> model) { super(id); LayerInfo layer = model.getObject().getLayer(); PreviewLayer preview = new PreviewLayer(layer); List<PreviewLink> links = new ArrayList<PreviewLink>(); links.add(new PreviewLink("layerPreview", preview.getWmsLink() + "&format=application/openlayers")); links.add(new PreviewLink("googleearth", "../wms/kml?layers=" + layer.getName())); add(new DropDownChoice<PreviewLink>("links", new Model(links.get(0)), links, new ChoiceRenderer<PreviewLink>() { @Override public Object getDisplayValue(PreviewLink object) { return new ParamResourceModel(object.id, ImportTaskTable.this, object.id).getString(); } @Override public String getIdValue(PreviewLink object, int index) { return object.href; } }).setNullValid(false).setOutputMarkupId(true)); add(new ExternalLink("go", "#").add(new AttributeModifier("onclick", new Model("go(document.getElementById('" + get("links").getMarkupId() + "'));")))); } class PreviewLink implements Serializable { String id; String href; PreviewLink(String id, String href) { this.id = id; this.href = href; } } } static class AdvancedOptionPanel extends Panel { public AdvancedOptionPanel(String id, IModel<ImportTask> model) { super(id); add(new Link<ImportTask>("link", model) { @Override public void onClick() { setResponsePage(new ImportTaskAdvancedPage(getModel())); } }); } } static class ErrorPanel extends Panel { ModalWindow popupWindow; public ErrorPanel(String id, IModel<ImportTask> model) { super(id); add(popupWindow = new ModalWindow("popup")); add(new AjaxLink<ImportTask>("link", model) { @Override public void onClick(AjaxRequestTarget target) { popupWindow.setContent( new ExceptionPanel(popupWindow.getContentId(), getModelObject().getError())); popupWindow.show(target); } }); } } static class ExceptionPanel extends Panel { public ExceptionPanel(String id, final Exception ex) { super(id); add(new Label("message", ex.getLocalizedMessage())); add(new TextArea("stackTrace", new Model(handleStackTrace(ex)))); add(new AjaxLink("copy") { @Override public void onClick(AjaxRequestTarget target) { String text = handleStackTrace(ex); StringSelection selection = new StringSelection(text); Toolkit.getDefaultToolkit().getSystemClipboard().setContents(selection, selection); } }); } String handleStackTrace(Exception ex) { ByteArrayOutputStream out = new ByteArrayOutputStream(); PrintWriter writer = new PrintWriter(out); ex.printStackTrace(writer); writer.flush(); return new String(out.toByteArray()); } } }