Java tutorial
/* * Copyright 2002-2005 the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package info.jtrac.wicket; import info.jtrac.domain.ColumnHeading; import info.jtrac.domain.FilterCriteria.Expression; import info.jtrac.domain.InvalidRefIdException; import info.jtrac.domain.Item; import info.jtrac.domain.ItemRefId; import info.jtrac.domain.ItemSearch; import info.jtrac.domain.Space; import info.jtrac.domain.User; import info.jtrac.service.Jtrac; import java.util.Arrays; import java.util.List; import org.apache.wicket.Component; import org.apache.wicket.PageParameters; import org.apache.wicket.ajax.AjaxRequestTarget; import org.apache.wicket.ajax.form.AjaxFormComponentUpdatingBehavior; import org.apache.wicket.markup.html.WebMarkupContainer; import org.apache.wicket.markup.html.basic.Label; import org.apache.wicket.markup.html.form.Button; import org.apache.wicket.markup.html.form.CheckBox; import org.apache.wicket.markup.html.form.DropDownChoice; import org.apache.wicket.markup.html.form.Form; import org.apache.wicket.markup.html.form.IChoiceRenderer; import org.apache.wicket.markup.html.link.Link; import org.apache.wicket.markup.html.list.ListItem; import org.apache.wicket.markup.html.list.ListView; import org.apache.wicket.markup.html.panel.FeedbackPanel; import org.apache.wicket.model.CompoundPropertyModel; import org.apache.wicket.model.PropertyModel; /** * item search form panel */ public class ItemSearchFormPanel extends BasePanel { private ItemSearch itemSearch; private boolean expandAll; public ItemSearchFormPanel(String id, User user) { super(id); this.itemSearch = new ItemSearch(user); addComponents(); } public ItemSearchFormPanel(String id) { super(id); Space s = getCurrentSpace(); if (s != null) { this.itemSearch = new ItemSearch(s); } else { this.itemSearch = new ItemSearch(getPrincipal()); } addComponents(); } public ItemSearchFormPanel(String id, ItemSearch itemSearch) { super(id); this.itemSearch = itemSearch; addComponents(); } private void addComponents() { final Form form = new Form("form"); add(form); form.add(new FeedbackPanel("feedback")); form.setModel(new CompoundPropertyModel(itemSearch)); List<Integer> sizes = Arrays.asList(new Integer[] { 5, 10, 15, 25, 50, 100, -1 }); DropDownChoice pageSizeChoice = new DropDownChoice("pageSize", sizes, new IChoiceRenderer() { @Override public Object getDisplayValue(Object o) { return ((Integer) o) == -1 ? localize("item_search_form.noLimit") : o.toString(); } @Override public String getIdValue(Object o, int i) { return o.toString(); } }); form.add(pageSizeChoice); form.add(new CheckBox("showHistory")); form.add(new Button("search") { @Override public void onSubmit() { String refId = itemSearch.getRefId(); if (refId != null) { if (getCurrentSpace() != null) { // user can save typing by entering the refId number without the space prefixCode try { long id = Long.parseLong(refId); refId = getCurrentSpace().getPrefixCode() + "-" + id; } catch (Exception e) { // oops that didn't work, continue } } try { new ItemRefId(refId); } catch (InvalidRefIdException e) { form.error(localize("item_search_form.error.refId.invalid")); return; } Item item = getJtrac().loadItemByRefId(refId); if (item == null) { form.error(localize("item_search_form.error.refId.notFound")); return; } JtracSession.get().setItemSearch(itemSearch); setResponsePage(ItemViewPage.class, new PageParameters("0=" + item.getRefId())); return; } String searchText = itemSearch.getSearchText(); if (searchText != null) { if (!getJtrac().validateTextSearchQuery(searchText)) { form.error(localize("item_search_form.error.summary.invalid")); return; } } setResponsePage(ItemListPage.class, new PageParameters(Processor.getAsQueryString(itemSearch))); } }); form.add(new Link("expandAll") { @Override public void onClick() { expandAll = true; } @Override public boolean isVisible() { return !expandAll; } }); form.add(new ListView("columns", itemSearch.getColumnHeadings()) { @Override protected void populateItem(final ListItem listItem) { final ColumnHeading ch = (ColumnHeading) listItem.getModelObject(); String label = ch.isField() ? ch.getLabel() : localize("item_list." + ch.getName()); listItem.add(new Label("columnName", label)); listItem.add(new CheckBox("visible", new PropertyModel(ch, "visible"))); List<Expression> validExpressions = Processor.getProcessor(ch).getValidFilterExpressions(); DropDownChoice expressionChoice = new IndicatingDropDownChoice("expression", validExpressions, new IChoiceRenderer() { @Override public Object getDisplayValue(Object o) { String key = ((Expression) o).getKey(); return localize("item_filter." + key); } @Override public String getIdValue(Object o, int i) { return ((Expression) o).getKey(); } }); // always pre-select "equal to" for filter criteria on ID if (ch.getName() == ColumnHeading.Name.ID) { ch.getFilterCriteria().setExpression(Expression.EQ); } if (expandAll && ch.getFilterCriteria().getExpression() == null) { ch.getFilterCriteria().setExpression(validExpressions.get(0)); } expressionChoice.setModel(new PropertyModel(ch.getFilterCriteria(), "expression")); expressionChoice.setNullValid(true); listItem.add(expressionChoice); Component fragParent = null; fragParent = getFilterUiFragment(ch); fragParent.setOutputMarkupId(true); listItem.add(fragParent); expressionChoice.add(new AjaxFormComponentUpdatingBehavior("onChange") { @Override protected void onUpdate(AjaxRequestTarget target) { if (!ch.getFilterCriteria().requiresUiFragmentUpdate()) { return; } Component fragment = getFilterUiFragment(ch); fragment.setOutputMarkupId(true); listItem.replace(fragment); target.addComponent(fragment); target.appendJavascript( "document.getElementById('" + fragment.getMarkupId() + "').focus()"); } }); } }); } private Component getFilterUiFragment(ColumnHeading ch) { if (ch.getFilterCriteria().getExpression() == null) { return new WebMarkupContainer("fragParent"); } User user = JtracSession.get().getUser(); // the space could be null also Space space = JtracSession.get().getCurrentSpace(); Jtrac jtrac = JtracApplication.get().getJtrac(); return Processor.getProcessor(ch).getFilterUiFragment(this, user, space, jtrac); } }