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.web.data.store.aggregate; import java.util.List; import org.apache.wicket.Component; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.ajax.form.AjaxFormComponentUpdatingBehavior; import org.apache.wicket.ajax.markup.html.AjaxLink; import org.apache.wicket.markup.html.WebMarkupContainer; import org.apache.wicket.markup.html.basic.Label; import org.apache.wicket.markup.html.form.DropDownChoice; import org.apache.wicket.markup.html.form.Form; import org.apache.wicket.markup.html.form.SubmitLink; import org.apache.wicket.markup.html.form.TextField; import org.apache.wicket.markup.html.link.Link; import org.apache.wicket.model.CompoundPropertyModel; import org.apache.wicket.model.IModel; import org.apache.wicket.model.Model; import org.geoserver.catalog.StoreInfo; import org.geoserver.web.GeoServerSecuredPage; import org.geoserver.web.data.store.StoreListChoiceRenderer; import org.geoserver.web.data.store.StoreListModel; import org.geoserver.web.wicket.GeoServerDataProvider.Property; import org.geoserver.web.wicket.GeoServerTablePanel; import org.geoserver.web.wicket.ParamResourceModel; import org.geoserver.web.wicket.SimpleAjaxLink; import org.geotools.data.aggregate.AggregateTypeConfiguration; import org.geotools.data.aggregate.SourceType; /** * Handles layer group */ @SuppressWarnings({ "rawtypes", "unchecked", "serial" }) public abstract class AbstractConfigPage extends GeoServerSecuredPage { AggregateStoreEditPanel master; private DropDownChoice<StoreInfo> stores; private DropDownChoice<String> types; private GeoServerTablePanel<SourceType> sourceTypes; private Form<AggregateTypeConfiguration> form; private Component addLink; Model<AggregateTypeConfiguration> configModel; private WebMarkupContainer sources; private TextField name; private AggregateTypeConfiguration originalConfig; public AbstractConfigPage(AggregateStoreEditPanel master) { this.master = master; } /** * Subclasses must call this method to initialize the UI for this page * * @param layerGroup */ protected void initUI(AggregateTypeConfiguration config) { // we need to clone the config since the table will modify it directly, it's not like // a normal form component originalConfig = config; configModel = new Model<AggregateTypeConfiguration>(new AggregateTypeConfiguration(config)); form = new Form<AggregateTypeConfiguration>("form", new CompoundPropertyModel(configModel)); add(form); name = new TextField("name"); name.setOutputMarkupId(true); name.setRequired(true); form.add(name); sources = new WebMarkupContainer("sources"); sources.setOutputMarkupId(true); form.add(sources); stores = new DropDownChoice<StoreInfo>("stores", new Model(null), new StoreListModel(), new StoreListChoiceRenderer()); stores.add(new AjaxFormComponentUpdatingBehavior("onchange") { @Override protected void onUpdate(AjaxRequestTarget target) { types.setChoices(new TypeListModel(stores.getModel())); addLink.setEnabled(false); target.addComponent(types); target.addComponent(addLink); } }); sources.add(stores); types = new DropDownChoice<String>("types", new Model(null), new TypeListModel(stores.getModel())); types.setOutputMarkupId(true); sources.add(types); types.add(new AjaxFormComponentUpdatingBehavior("onchange") { @Override protected void onUpdate(AjaxRequestTarget target) { addLink.setEnabled(stores.getModelObject() != null && types.getModelObject() != null); target.addComponent(addLink); } }); addLink = addConfigLink(); addLink.setOutputMarkupId(true); addLink.setEnabled(false); sources.add(addLink); sourceTypes = new GeoServerTablePanel<SourceType>("sourceTypes", new SourceTypeProvider(configModel)) { @Override protected Component getComponentForProperty(String id, IModel itemModel, Property<SourceType> property) { if (property.getName().equals("default")) { return new Label(id, property.getModel(itemModel)); } else if (property.getName().equals("makeDefault")) { return makeDefaultLink(id, itemModel); } else if (property.getName().equals("remove")) { return removeLink(id, itemModel); } else { return null; } } }; sourceTypes.setPageable(false); sourceTypes.setFilterable(false); sources.add(sourceTypes); form.add(saveLink()); form.add(cancelLink()); } protected Component removeLink(String id, IModel itemModel) { SimpleAjaxLink link = new SimpleAjaxLink(id, itemModel, new ParamResourceModel("remove", this)) { @Override protected void onClick(AjaxRequestTarget target) { // remove the link AggregateTypeConfiguration config = form.getModelObject(); config.getSourceTypes().remove(getModelObject()); // refresh the whole form (lazy, we could add a container around the table) target.addComponent(sources); } }; return link; } protected Component makeDefaultLink(String id, IModel itemModel) { return new SimpleAjaxLink(id, itemModel, new ParamResourceModel("makeDefault", this)) { @Override protected void onClick(AjaxRequestTarget target) { // remove the link AggregateTypeConfiguration config = form.getModelObject(); config.setPrimarySourceType((SourceType) getModelObject()); // refresh the whole form (lazy, we could add a container around the table) target.addComponent(sources); } }; } private Component addConfigLink() { return new AjaxLink<Void>("addType") { @Override public void onClick(AjaxRequestTarget target) { AggregateTypeConfiguration config = form.getModelObject(); String storeName = stores.getModelObject().getName(); String typeName = types.getModelObject(); stores.setModelObject(null); types.setModelObject(null); config.addSourceType(storeName, typeName); if (name.getModelObject() == null || "".equals(name.getModelObject())) { name.setModelObject(typeName); target.addComponent(name); } // refresh the whole table target.addComponent(sources); } }; } private Link cancelLink() { return new Link("cancel") { @Override public void onClick() { setResponsePage(master.getPage()); } }; } private SubmitLink saveLink() { return new SubmitLink("save") { @Override public void onSubmit() { AggregateTypeConfiguration config = form.getModelObject(); List<SourceType> stypes = config.getSourceTypes(); if (stypes == null || stypes.size() == 0) { error(new ParamResourceModel("atLeastOneSource", AbstractConfigPage.this).getString()); } else if (AbstractConfigPage.this.onSubmit()) { originalConfig.copyFrom(config); setResponsePage(master.getPage()); } } }; } /** * Subclasses */ protected abstract boolean onSubmit(); }