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TomasMikulaTomasMikula
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Merge pull request #164 from cemartins/xml-editor-demo
Add XML editor demo.
2 parents ece0cde + a10feff commit 73384d2

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‎richtextfx-demos/src/main/java/org/fxmisc/richtext/demo/XMLEditor.java‎

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package org.fxmisc.richtext.demo;
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import java.util.Collection;
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import java.util.Collections;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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import org.fxmisc.richtext.CodeArea;
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import org.fxmisc.richtext.LineNumberFactory;
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import org.fxmisc.richtext.StyleSpans;
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import org.fxmisc.richtext.StyleSpansBuilder;
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import javafx.application.Application;
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import javafx.scene.Scene;
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import javafx.scene.layout.StackPane;
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import javafx.stage.Stage;
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public class XMLEditor extends Application {
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private static final Pattern XML_TAG = Pattern.compile("(?<ELEMENT>(</?\\h*)(\\w+)([^<>]*)(\\h*/?>))"
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+"|(?<COMMENT><!--[^<>]+-->)");
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private static final Pattern ATTRIBUTES = Pattern.compile("(\\w+\\h*)(=)(\\h*\"[^\"]+\")");
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private static final int GROUP_OPEN_BRACKET = 2;
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private static final int GROUP_ELEMENT_NAME = 3;
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private static final int GROUP_ATTRIBUTES_SECTION = 4;
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private static final int GROUP_CLOSE_BRACKET = 5;
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private static final int GROUP_ATTRIBUTE_NAME = 1;
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private static final int GROUP_EQUAL_SYMBOL = 2;
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private static final int GROUP_ATTRIBUTE_VALUE = 3;
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private static final String sampleCode = String.join("\n", new String[] {
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"<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"yes\"?>",
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"<!-- Sample XML -->",
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"< orders >",
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" <Order number=\"1\" table=\"center\">",
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" <items>",
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" <Item>",
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" <type>ESPRESSO</type>",
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" <shots>2</shots>",
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" <iced>false</iced>",
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" <orderNumber>1</orderNumber>",
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" </Item>",
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" <Item>",
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" <type>CAPPUCCINO</type>",
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" <shots>1</shots>",
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" <iced>false</iced>",
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" <orderNumber>1</orderNumber>",
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" </Item>",
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" <Item>",
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" <type>LATTE</type>",
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" <shots>2</shots>",
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" <iced>false</iced>",
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" <orderNumber>1</orderNumber>",
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" </Item>",
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" <Item>",
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" <type>MOCHA</type>",
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" <shots>3</shots>",
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" <iced>true</iced>",
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" <orderNumber>1</orderNumber>",
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" </Item>",
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" </items>",
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" </Order>",
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"</orders>"
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});
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public static void main(String[] args) {
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launch(args);
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}
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@Override
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public void start(Stage primaryStage) {
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CodeArea codeArea = new CodeArea();
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codeArea.setParagraphGraphicFactory(LineNumberFactory.get(codeArea));
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codeArea.textProperty().addListener((obs, oldText, newText) -> {
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codeArea.setStyleSpans(0, computeHighlighting(newText));
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});
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codeArea.replaceText(0, 0, sampleCode);
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Scene scene = new Scene(new StackPane(codeArea), 600, 400);
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scene.getStylesheets().add(JavaKeywordsAsync.class.getResource("xml-highlighting.css").toExternalForm());
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primaryStage.setScene(scene);
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primaryStage.setTitle("XML Editor Demo");
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primaryStage.show();
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}
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private static StyleSpans<Collection<String>> computeHighlighting(String text) {
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Matcher matcher = XML_TAG.matcher(text);
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int lastKwEnd = 0;
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StyleSpansBuilder<Collection<String>> spansBuilder = new StyleSpansBuilder<>();
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while(matcher.find()) {
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spansBuilder.add(Collections.emptyList(), matcher.start() - lastKwEnd);
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if(matcher.group("COMMENT") != null) {
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spansBuilder.add(Collections.singleton("comment"), matcher.end() - matcher.start());
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}
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else {
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if(matcher.group("ELEMENT") != null) {
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String attributesText = matcher.group(GROUP_ATTRIBUTES_SECTION);
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spansBuilder.add(Collections.singleton("tagmark"), matcher.end(GROUP_OPEN_BRACKET) - matcher.start(GROUP_OPEN_BRACKET));
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spansBuilder.add(Collections.singleton("anytag"), matcher.end(GROUP_ELEMENT_NAME) - matcher.end(GROUP_OPEN_BRACKET));
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if(!attributesText.isEmpty()) {
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lastKwEnd = 0;
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Matcher amatcher = ATTRIBUTES.matcher(attributesText);
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while(amatcher.find()) {
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spansBuilder.add(Collections.emptyList(), amatcher.start() - lastKwEnd);
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spansBuilder.add(Collections.singleton("attribute"), amatcher.end(GROUP_ATTRIBUTE_NAME) - amatcher.start(GROUP_ATTRIBUTE_NAME));
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spansBuilder.add(Collections.singleton("tagmark"), amatcher.end(GROUP_EQUAL_SYMBOL) - amatcher.end(GROUP_ATTRIBUTE_NAME));
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spansBuilder.add(Collections.singleton("avalue"), amatcher.end(GROUP_ATTRIBUTE_VALUE) - amatcher.end(GROUP_EQUAL_SYMBOL));
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lastKwEnd = amatcher.end();
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}
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if(attributesText.length() > lastKwEnd)
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spansBuilder.add(Collections.emptyList(), attributesText.length() - lastKwEnd);
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}
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lastKwEnd = matcher.end(GROUP_ATTRIBUTES_SECTION);
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spansBuilder.add(Collections.singleton("tagmark"), matcher.end(GROUP_CLOSE_BRACKET) - lastKwEnd);
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}
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}
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lastKwEnd = matcher.end();
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}
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spansBuilder.add(Collections.emptyList(), text.length() - lastKwEnd);
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return spansBuilder.create();
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}
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}

‎richtextfx-demos/src/main/resources/org/fxmisc/richtext/demo/xml-highlighting.css‎

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.tagmark {
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-fx-fill: gray;
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}
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.anytag {
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-fx-fill: crimson;
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}
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.paren {
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-fx-fill: firebrick;
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-fx-font-weight: bold;
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}
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.attribute {
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-fx-fill: darkviolet;
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}
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.avalue {
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-fx-fill: black;
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}
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.comment {
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-fx-fill: teal;
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}

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