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Html Builder pattern
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| package template; | |
| public class ContentBuilder extends ElementBuilder { | |
| private String content; | |
| public ContentBuilder(String content) { | |
| this.content = content; | |
| } | |
| @Override | |
| public String build() { | |
| return content; | |
| } | |
| } |
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| package template; | |
| import java.util.function.Consumer; | |
| public class DivBuilder extends ElementBuilder { | |
| public DivBuilder addDiv(Consumer<DivBuilder> consumer) { | |
| DivBuilder divBuilder = new DivBuilder(); | |
| builders.add(divBuilder); | |
| consumer.accept(divBuilder); | |
| return this; | |
| } | |
| public DivBuilder addTable(Consumer<TableBuilder> consumer) { | |
| TableBuilder tableBuilder = new TableBuilder(); | |
| builders.add(tableBuilder); | |
| consumer.accept(tableBuilder); | |
| return this; | |
| } | |
| public DivBuilder addContent(String content) { | |
| builders.add(new ContentBuilder(content)); | |
| return this; | |
| } | |
| @Override | |
| public String build() { | |
| return "<div>" + super.build() + "</div>"; | |
| } | |
| } |
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| package template; | |
| import java.util.ArrayList; | |
| import java.util.HashMap; | |
| import java.util.List; | |
| import java.util.Map; | |
| public abstract class ElementBuilder { | |
| protected List<ElementBuilder> builders = new ArrayList<>(); | |
| private Map<String, String> properties = new HashMap<>(); | |
| public void addProperty(String name, String value) { | |
| properties.put(name, value); | |
| } | |
| public String build() { | |
| StringBuilder b = new StringBuilder(); | |
| builders.forEach(builder -> b.append(builder.build())); | |
| return b.toString(); | |
| } | |
| } |
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| package template; | |
| import java.util.function.Consumer; | |
| public class HtmlBuilder extends ElementBuilder { | |
| public HtmlBuilder addDiv(Consumer<DivBuilder> consumer) { | |
| DivBuilder divBuilder = new DivBuilder(); | |
| builders.add(divBuilder); | |
| consumer.accept(divBuilder); | |
| return this; | |
| } | |
| public HtmlBuilder addTable(Consumer<TableBuilder> consumer) { | |
| TableBuilder tableBuilder = new TableBuilder(); | |
| builders.add(tableBuilder); | |
| consumer.accept(tableBuilder); | |
| return this; | |
| } | |
| public String build() { | |
| StringBuilder b = new StringBuilder("<html><body>"); | |
| b.append(super.build()); | |
| b.append("</body><html>"); | |
| return b.toString(); | |
| } | |
| } |
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| <html> | |
| <body> | |
| <div> | |
| <div>TEST_CONTENT</div> | |
| </div> | |
| <table> | |
| <tr> | |
| <td>cell1</td> | |
| </tr> | |
| <tr> | |
| <td>cell2</td> | |
| </tr> | |
| <tr> | |
| <td>cell3</td> | |
| </tr> | |
| </table> | |
| </body> | |
| <html> |
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| package template; | |
| import java.util.function.Consumer; | |
| public class TableBuilder extends ElementBuilder { | |
| public TableBuilder addRow(Consumer<TableRowBuilder> consumer) { | |
| TableRowBuilder builder = new TableRowBuilder(); | |
| builders.add(builder); | |
| consumer.accept(builder); | |
| return this; | |
| } | |
| @Override | |
| public String build() { | |
| return "<table>" + super.build() + "</table>"; | |
| } | |
| } |
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| package template; | |
| import java.util.function.Consumer; | |
| public class TableCellBuilder extends ElementBuilder { | |
| public TableCellBuilder addDiv(Consumer<DivBuilder> consumer) { | |
| DivBuilder divBuilder = new DivBuilder(); | |
| builders.add(divBuilder); | |
| consumer.accept(divBuilder); | |
| return this; | |
| } | |
| public TableCellBuilder addTable(Consumer<TableBuilder> consumer) { | |
| TableBuilder tableBuilder = new TableBuilder(); | |
| builders.add(tableBuilder); | |
| consumer.accept(tableBuilder); | |
| return this; | |
| } | |
| public TableCellBuilder addContent(String content) { | |
| builders.add(new ContentBuilder(content)); | |
| return this; | |
| } | |
| @Override | |
| public String build() { | |
| return "<td>" + super.build() + "</td>"; | |
| } | |
| } |
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| package template; | |
| import java.util.function.Consumer; | |
| public class TableRowBuilder extends ElementBuilder { | |
| public TableRowBuilder addCell(Consumer<TableCellBuilder> consumer) { | |
| TableCellBuilder builder = new TableCellBuilder(); | |
| builders.add(builder); | |
| consumer.accept(builder); | |
| return this; | |
| } | |
| @Override | |
| public String build() { | |
| return "<tr>" + super.build() + "</tr>"; | |
| } | |
| } |
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| import template.HtmlBuilder; | |
| import java.util.ArrayList; | |
| import java.util.List; | |
| public class TestClass { | |
| public static void main(String[] args) { | |
| List<String> cells = new ArrayList<>(); | |
| cells.add("cell1"); | |
| cells.add("cell2"); | |
| cells.add("cell3"); | |
| String result = new HtmlBuilder() | |
| .addDiv(divBuilder -> { | |
| divBuilder.addDiv(divBuilder1 -> { | |
| divBuilder1.addContent("TEST_CONTENT"); | |
| }); | |
| }) | |
| .addTable(tableBuilder -> { | |
| cells.forEach(cellText -> { | |
| tableBuilder.addRow(tableRowBuilder -> { | |
| tableRowBuilder.addCell(tableCellBuilder -> { | |
| tableCellBuilder.addContent(cellText); | |
| }); | |
| }); | |
| }); | |
| }) | |
| .build(); | |
| System.out.println(result); | |
| } | |
| } |
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