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feat: add support for multiple header rows
Add support for multiple header rows only for excel files
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107 changes: 107 additions & 0 deletions
107
...t/java/com/flowingcode/vaadin/addons/gridexporter/GridExporterMultipleHeaderRowsDemo.java
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|---|---|---|
| @@ -0,0 +1,107 @@ | ||
| /*- | ||
| * #%L | ||
| * Grid Exporter Add-on | ||
| * %% | ||
| * Copyright (C) 2022 - 2023 Flowing Code | ||
| * %% | ||
| * 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. | ||
| * #L% | ||
| */ | ||
| package com.flowingcode.vaadin.addons.gridexporter; | ||
|
|
||
| import com.flowingcode.vaadin.addons.demo.DemoSource; | ||
| import com.github.javafaker.Faker; | ||
| import com.vaadin.flow.component.grid.ColumnTextAlign; | ||
| import com.vaadin.flow.component.grid.Grid; | ||
| import com.vaadin.flow.component.grid.Grid.Column; | ||
| import com.vaadin.flow.component.grid.HeaderRow; | ||
| import com.vaadin.flow.component.grid.HeaderRow.HeaderCell; | ||
| import com.vaadin.flow.component.html.Div; | ||
| import com.vaadin.flow.component.html.Span; | ||
| import com.vaadin.flow.data.renderer.LitRenderer; | ||
| import com.vaadin.flow.router.PageTitle; | ||
| import com.vaadin.flow.router.Route; | ||
| import java.io.IOException; | ||
| import java.math.BigDecimal; | ||
| import java.text.DecimalFormat; | ||
| import java.text.SimpleDateFormat; | ||
| import java.util.Calendar; | ||
| import java.util.HashMap; | ||
| import java.util.List; | ||
| import java.util.stream.Collectors; | ||
| import java.util.stream.IntStream; | ||
| import org.apache.poi.EncryptedDocumentException; | ||
|
|
||
| @DemoSource | ||
| @PageTitle("Multiple Header Rows") | ||
| @Route(value = "gridexporter/headers", layout = GridExporterDemoView.class) | ||
| @SuppressWarnings("serial") | ||
| public class GridExporterMultipleHeaderRowsDemo extends Div { | ||
|
|
||
| private static final String NUMBER_FORMAT_PATTERN = "$#,###.##"; | ||
| private static final String DATE_FORMAT_PATTERN = "yyyy-MM-dd"; | ||
| private static final String EXCEL_TEMPLATE_PATH = "/custom-template.xlsx"; | ||
| private static final String WORD_TEMPLATE_PATH = "/custom-template.docx"; | ||
|
|
||
| public GridExporterMultipleHeaderRowsDemo() throws EncryptedDocumentException, IOException { | ||
| Grid<Person> grid = new Grid<>(Person.class); | ||
| DecimalFormat decimalFormat = new DecimalFormat(NUMBER_FORMAT_PATTERN); | ||
| grid.removeAllColumns(); | ||
| grid.addColumn( | ||
| LitRenderer.<Person>of("<b>${item.name}</b>").withProperty("name", Person::getName)) | ||
| .setHeader("Name"); | ||
| grid.addColumn("lastName").setHeader("Last Name"); | ||
| grid.addColumn(item -> Faker.instance().lorem().characters(30, 50)).setHeader("Big column"); | ||
| Column<Person> budgetColumn = grid.addColumn(item -> decimalFormat.format(item.getBudget())) | ||
| .setHeader("Budget").setTextAlign(ColumnTextAlign.END); | ||
| List<Person> people = IntStream.range(0, 100).asLongStream().mapToObj(number -> { | ||
| Faker faker = new Faker(); | ||
| Double budget = faker.number().randomDouble(2, 10000, 100000); | ||
| return new Person(faker.name().firstName(), | ||
| (Math.random() > 0.3 ? faker.name().lastName() : null), | ||
| faker.number().numberBetween(15, 50), budget); | ||
| }).collect(Collectors.toList()); | ||
| @SuppressWarnings("null") | ||
| BigDecimal total = people.stream().map(Person::getBudget).map(BigDecimal::valueOf) | ||
| .reduce(BigDecimal.ZERO, BigDecimal::add); | ||
| budgetColumn.setFooter(new DecimalFormat(NUMBER_FORMAT_PATTERN).format(total)); | ||
|
|
||
| grid.setItems(people); | ||
| grid.setWidthFull(); | ||
| this.setSizeFull(); | ||
|
|
||
| HeaderRow firstExtraHeaderRow = grid.appendHeaderRow(); | ||
| HeaderRow secondExtraHeaderRow = grid.appendHeaderRow(); | ||
| for (Column<Person> column : grid.getColumns()) { | ||
| String columnHeader = grid.getHeaderRows().get(0).getCell(column).getText(); | ||
|
|
||
| HeaderCell firstHeaderCell = firstExtraHeaderRow.getCell(column); | ||
| firstHeaderCell.setComponent(new Span(columnHeader + " 1")); | ||
| HeaderCell secondHeaderCell = secondExtraHeaderRow.getCell(column); | ||
| secondHeaderCell.setComponent(new Span(columnHeader + " 2")); | ||
| } | ||
|
|
||
| GridExporter<Person> exporter = GridExporter.createFor(grid, EXCEL_TEMPLATE_PATH, WORD_TEMPLATE_PATH); | ||
| HashMap<String, String> placeholders = new HashMap<>(); | ||
| placeholders.put("${date}", new SimpleDateFormat(DATE_FORMAT_PATTERN).format(Calendar.getInstance().getTime())); | ||
| exporter.setAdditionalPlaceHolders(placeholders); | ||
| exporter.setSheetNumber(1); | ||
| exporter.setCsvExportEnabled(false); | ||
| exporter.setNumberColumnFormat(budgetColumn, decimalFormat, NUMBER_FORMAT_PATTERN); | ||
| exporter.setTitle("People information"); | ||
| exporter.setNullValueHandler(() -> "(No lastname)"); | ||
| exporter.setFileName( | ||
| "GridExport" + new SimpleDateFormat(DATE_FORMAT_PATTERN).format(Calendar.getInstance().getTime())); | ||
| add(grid); | ||
| } | ||
| } |