Java开发工具IntelliJ IDEA定义语法高亮和颜色设置页面详解

在用户使用Intellij IDEA 的过程中，我们需要对语法的高亮和颜色设置的页面进行定义之后，才能征程的进行使用，下面是具体的操作代码和图例说明。

1 定义syntax highlighter

package com.simpleplugin;

import com.intellij.lexer.FlexAdapter;
import com.intellij.lexer.Lexer;
import com.intellij.openapi.editor.SyntaxHighlighterColors;
import com.intellij.openapi.editor.colors.TextAttributesKey;
import com.intellij.openapi.editor.markup.TextAttributes;
import com.intellij.openapi.fileTypes.SyntaxHighlighterBase;
import com.intellij.psi.TokenType;
import com.intellij.psi.tree.IElementType;
import com.simpleplugin.psi.SimpleTypes;
import org.jetbrains.annotations.NotNull;

import java.awt.*;
import java.io.Reader;

import static com.intellij.openapi.editor.colors.TextAttributesKey.createTextAttributesKey;

public class SimpleSyntaxHighlighter extends SyntaxHighlighterBase {
public static final TextAttributesKey SEPARATOR = createTextAttributesKey("SIMPLE_SEPARATOR", SyntaxHighlighterColors.OPERATION_SIGN);
public static final TextAttributesKey KEY = createTextAttributesKey("SIMPLE_KEY", SyntaxHighlighterColors.KEYWORD);
public static final TextAttributesKey VALUE = createTextAttributesKey("SIMPLE_VALUE", SyntaxHighlighterColors.STRING);
public static final TextAttributesKey COMMENT = createTextAttributesKey("SIMPLE_COMMENT", SyntaxHighlighterColors.LINE_COMMENT);

static final TextAttributesKey BAD_CHARACTER = createTextAttributesKey("SIMPLE_BAD_CHARACTER",
new TextAttributes(Color.RED, null, null, null, Font.BOLD));

private static final TextAttributesKey[] BAD_CHAR_KEYS = new TextAttributesKey[]{BAD_CHARACTER};
private static final TextAttributesKey[] SEPARATOR_KEYS = new TextAttributesKey[]{SEPARATOR};
private static final TextAttributesKey[] KEY_KEYS = new TextAttributesKey[]{KEY};
private static final TextAttributesKey[] VALUE_KEYS = new TextAttributesKey[]{VALUE};
private static final TextAttributesKey[] COMMENT_KEYS = new TextAttributesKey[]{COMMENT};
private static final TextAttributesKey[] EMPTY_KEYS = new TextAttributesKey[0];

@NotNull
@Override
public Lexer getHighlightingLexer() {
return new FlexAdapter(new SimpleLexer((Reader) null));
}

@NotNull
@Override
public TextAttributesKey[] getTokenHighlights(IElementType tokenType) {
if (tokenType.equals(SimpleTypes.SEPARATOR)) {
return SEPARATOR_KEYS;
} else if (tokenType.equals(SimpleTypes.KEY)) {
return KEY_KEYS;
} else if (tokenType.equals(SimpleTypes.VALUE)) {
return VALUE_KEYS;
} else if (tokenType.equals(SimpleTypes.COMMENT)) {
return COMMENT_KEYS;
} else if (tokenType.equals(TokenType.BAD_CHARACTER)) {
return BAD_CHAR_KEYS;
} else {
return EMPTY_KEYS;
}
}
}

2 定义syntax highlighter factory

package com.simpleplugin;

import com.intellij.openapi.fileTypes.SyntaxHighlighter;
import com.intellij.openapi.fileTypes.SyntaxHighlighterFactory;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vfs.VirtualFile;
import org.jetbrains.annotations.NotNull;

public class SimpleSyntaxHighlighterFactory extends SyntaxHighlighterFactory {
@NotNull
@Override
public SyntaxHighlighter getSyntaxHighlighter(Project project, VirtualFile virtualFile) {
return new SimpleSyntaxHighlighter();
}
}

3 注册syntax highlighter factory

<lang.syntaxHighlighterFactory key="Simple" implementationClass="com.simpleplugin.SimpleSyntaxHighlighterFactory"/>

4 运行项目



5 定义颜色设置页面

package com.simpleplugin;

import com.intellij.openapi.editor.colors.TextAttributesKey;
import com.intellij.openapi.fileTypes.SyntaxHighlighter;
import com.intellij.openapi.options.colors.AttributesDescriptor;
import com.intellij.openapi.options.colors.ColorDescriptor;
import com.intellij.openapi.options.colors.ColorSettingsPage;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;

import javax.swing.*;
import java.util.Map;

public class SimpleColorSettingsPage implements ColorSettingsPage {
private static final AttributesDescriptor[] DESCRIPTORS = new AttributesDescriptor[]{
new AttributesDescriptor("Key", SimpleSyntaxHighlighter.KEY),
new AttributesDescriptor("Separator", SimpleSyntaxHighlighter.SEPARATOR),
new AttributesDescriptor("Value", SimpleSyntaxHighlighter.VALUE),
};

@Nullable
@Override
public Icon getIcon() {
return SimpleIcons.FILE;
}

@NotNull
@Override
public SyntaxHighlighter getHighlighter() {
return new SimpleSyntaxHighlighter();
}

@NotNull
@Override
public String getDemoText() {
return "# You are reading the \".properties\" entry.\n" +
"! The exclamation mark can also mark text as comments.\n" +
"website = http://en.wikipedia.org/\n" +
"language = English\n" +
"# The backslash below tells the application to continue reading\n" +
"# the value onto the next line.\n" +
"message = Welcome to \\\n" +
"          Wikipedia!\n" +
"# Add spaces to the key\n" +
"key\\ with\\ spaces = This is the value that could be looked up with the key \"key with spaces\".\n" +
"# Unicode\n"
ad07
+
"tab : \\u0009";
}

@Nullable
@Override
public Map<String, TextAttributesKey> getAdditionalHighlightingTagToDescriptorMap() {
return null;
}

@NotNull
@Override
public AttributesDescriptor[] getAttributeDescriptors() {
return DESCRIPTORS;
}

@NotNull
@Override
public ColorDescriptor[] getColorDescriptors() {
return ColorDescriptor.EMPTY_ARRAY;
}

@NotNull
@Override
public String getDisplayName() {
return "Simple";
}
}

6 注册颜色设置页面

<colorSettingsPage implementation="com.simpleplugin.SimpleColorSettingsPage"/>

7 运行项目



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