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/*
* Copyright 2000-2013 JetBrains s.r.o.
*
* 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 com.intellij.codeInsight.template.impl;
import com.intellij.codeInsight.template.TemplateContextType;
import com.intellij.ide.DataManager;
import com.intellij.lexer.CompositeLexer;
import com.intellij.lexer.Lexer;
import com.intellij.lexer.MergingLexerAdapter;
import com.intellij.openapi.actionSystem.CommonDataKeys;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.EditorFactory;
import com.intellij.openapi.editor.EditorSettings;
import com.intellij.openapi.editor.colors.EditorColors;
import com.intellij.openapi.editor.colors.EditorColorsManager;
import com.intellij.openapi.editor.colors.EditorColorsScheme;
import com.intellij.openapi.editor.colors.TextAttributesKey;
import com.intellij.openapi.editor.ex.EditorEx;
import com.intellij.openapi.editor.ex.util.LexerEditorHighlighter;
import com.intellij.openapi.editor.highlighter.EditorHighlighter;
import com.intellij.openapi.editor.highlighter.EditorHighlighterFactory;
import com.intellij.openapi.fileEditor.FileDocumentManager;
import com.intellij.openapi.fileTypes.PlainSyntaxHighlighter;
import com.intellij.openapi.fileTypes.SyntaxHighlighter;
import com.intellij.openapi.fileTypes.SyntaxHighlighterBase;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.vfs.VirtualFile;
import com.intellij.psi.tree.IElementType;
import com.intellij.psi.tree.TokenSet;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
public class TemplateEditorUtil {
private TemplateEditorUtil() {}
public static Editor createEditor(boolean isReadOnly, CharSequence text) {
return createEditor(isReadOnly, text, null);
}
public static Editor createEditor(boolean isReadOnly, CharSequence text, @Nullable TemplateContext context) {
final Project project = CommonDataKeys.PROJECT.getData(DataManager.getInstance().getDataContext());
return createEditor(isReadOnly, createDocument(text, context, project), project);
}
private static Document createDocument(CharSequence text, @Nullable TemplateContext context, Project project) {
if (context != null) {
for (TemplateContextType type : TemplateManagerImpl.getAllContextTypes()) {
if (context.isExplicitlyEnabled(type)) {
return type.createDocument(text, project);
}
}
}
return EditorFactory.getInstance().createDocument(text);
}
private static Editor createEditor(boolean isReadOnly, final Document document, final Project project) {
EditorFactory editorFactory = EditorFactory.getInstance();
Editor editor = (isReadOnly ? editorFactory.createViewer(document, project) : editorFactory.createEditor(document, project));
EditorSettings editorSettings = editor.getSettings();
editorSettings.setVirtualSpace(false);
editorSettings.setLineMarkerAreaShown(false);
editorSettings.setIndentGuidesShown(false);
editorSettings.setLineNumbersShown(false);
editorSettings.setFoldingOutlineShown(false);
EditorColorsScheme scheme = editor.getColorsScheme();
scheme.setColor(EditorColors.CARET_ROW_COLOR, null);
VirtualFile file = FileDocumentManager.getInstance().getFile(document);
if (file != null) {
EditorHighlighter highlighter = EditorHighlighterFactory.getInstance().createEditorHighlighter(file, scheme, project);
((EditorEx) editor).setHighlighter(highlighter);
}
return editor;
}
public static void setHighlighter(Editor editor, TemplateContext templateContext) {
SyntaxHighlighter baseHighlighter = null;
for(TemplateContextType type: TemplateManagerImpl.getAllContextTypes()) {
if (templateContext.isEnabled(type)) {
baseHighlighter = type.createHighlighter();
if (baseHighlighter != null) break;
}
}
if (baseHighlighter == null) {
baseHighlighter = new PlainSyntaxHighlighter();
}
SyntaxHighlighter highlighter = createTemplateTextHighlighter(baseHighlighter);
((EditorEx)editor).setHighlighter(new LexerEditorHighlighter(highlighter, EditorColorsManager.getInstance().getGlobalScheme()));
}
private final static TokenSet TOKENS_TO_MERGE = TokenSet.create(TemplateTokenType.TEXT);
private static SyntaxHighlighter createTemplateTextHighlighter(final SyntaxHighlighter original) {
return new TemplateHighlighter(original);
}
private static class TemplateHighlighter extends SyntaxHighlighterBase {
private final Lexer myLexer;
private final SyntaxHighlighter myOriginalHighlighter;
public TemplateHighlighter(SyntaxHighlighter original) {
myOriginalHighlighter = original;
Lexer originalLexer = original.getHighlightingLexer();
Lexer templateLexer = new TemplateTextLexer();
templateLexer = new MergingLexerAdapter(templateLexer, TOKENS_TO_MERGE);
myLexer = new CompositeLexer(originalLexer, templateLexer) {
@Override
protected IElementType getCompositeTokenType(IElementType type1, IElementType type2) {
if (type2 == TemplateTokenType.VARIABLE) {
return type2;
}
else {
return type1;
}
}
};
}
@Override
@NotNull
public Lexer getHighlightingLexer() {
return myLexer;
}
@Override
@NotNull
public TextAttributesKey[] getTokenHighlights(IElementType tokenType) {
if (tokenType == TemplateTokenType.VARIABLE) {
return pack(myOriginalHighlighter.getTokenHighlights(tokenType), TemplateColors.TEMPLATE_VARIABLE_ATTRIBUTES);
}
return myOriginalHighlighter.getTokenHighlights(tokenType);
}
}
}
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