| /* |
| * Copyright 2000-2014 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.openapi.editor.highlighter; |
| |
| import com.intellij.openapi.editor.Document; |
| import com.intellij.openapi.editor.colors.EditorColorsScheme; |
| import com.intellij.openapi.editor.event.DocumentEvent; |
| import com.intellij.openapi.editor.markup.TextAttributes; |
| import com.intellij.openapi.util.Comparing; |
| import com.intellij.openapi.util.TextRange; |
| import com.intellij.psi.tree.IElementType; |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.Comparator; |
| import java.util.List; |
| |
| /** |
| * Created by IntelliJ IDEA. |
| * User: Irina.Chernushina |
| * Date: 9/8/11 |
| * Time: 12:52 PM |
| */ |
| public class FragmentedEditorHighlighter implements EditorHighlighter { |
| private final List<Element> myPieces; |
| private final Document myDocument; |
| private final int myAdditionalOffset; |
| private final boolean myMergeByTextAttributes; |
| |
| public FragmentedEditorHighlighter(HighlighterIterator sourceIterator, List<TextRange> ranges) { |
| this(sourceIterator, ranges, 0, false); |
| } |
| |
| public FragmentedEditorHighlighter(HighlighterIterator sourceIterator, |
| List<TextRange> ranges, |
| final int additionalOffset, |
| boolean mergeByTextAttributes) { |
| myMergeByTextAttributes = mergeByTextAttributes; |
| myDocument = sourceIterator.getDocument(); |
| myPieces = new ArrayList<Element>(); |
| myAdditionalOffset = additionalOffset; |
| translate(sourceIterator, ranges); |
| } |
| |
| private void translate(HighlighterIterator iterator, List<TextRange> ranges) { |
| int offset = 0; |
| int index = 0; |
| |
| while (!iterator.atEnd() && index < ranges.size()) { |
| TextRange range = ranges.get(index); |
| |
| if (range.getStartOffset() >= iterator.getEnd()) { |
| iterator.advance(); |
| continue; |
| } |
| |
| if (range.getEndOffset() >= iterator.getStart()) { |
| int relativeStart = Math.max(iterator.getStart() - range.getStartOffset(), 0); |
| int relativeEnd = Math.min(iterator.getEnd() - range.getStartOffset(), range.getLength() + 1); |
| |
| addElement(new Element(offset + relativeStart, |
| offset + relativeEnd, |
| iterator.getTokenType(), |
| iterator.getTextAttributes())); |
| } |
| |
| if (range.getEndOffset() < iterator.getEnd()) { |
| offset += range.getLength() + 1 + myAdditionalOffset; // myAdditionalOffset because of extra line - for shoene separators |
| int lastEnd = myPieces.isEmpty() ? -1 : myPieces.get(myPieces.size() - 1).getEnd(); |
| addElement(new Element(Math.max(offset - 1 - myAdditionalOffset, lastEnd), offset, null, TextAttributes.ERASE_MARKER)); |
| index++; |
| continue; |
| } |
| |
| iterator.advance(); |
| } |
| } |
| |
| private void addElement(@NotNull Element element) { |
| boolean merged = false; |
| if (myMergeByTextAttributes && !myPieces.isEmpty()) { |
| Element oldElement = myPieces.get(myPieces.size() - 1); |
| if (oldElement.getEnd() >= element.getStart() && |
| Comparing.equal(oldElement.getAttributes(), element.getAttributes()) && |
| Comparing.equal(oldElement.getElementType(), element.getElementType())) { |
| merged = true; |
| myPieces.remove(myPieces.size() - 1); |
| myPieces.add(new Element(oldElement.getStart(), |
| element.getEnd(), |
| element.getElementType(), |
| element.getAttributes())); |
| } |
| } |
| if (!merged) { |
| myPieces.add(element); |
| } |
| } |
| |
| @NotNull |
| @Override |
| public HighlighterIterator createIterator(int startOffset) { |
| int index = Collections.binarySearch(myPieces, new Element(startOffset, 0, null, null), new Comparator<Element>() { |
| @Override |
| public int compare(Element o1, Element o2) { |
| return o1.getStart() - o2.getStart(); |
| } |
| }); |
| // index: (-insertion point - 1), where insertionPoint is the index of the first element greater than the key |
| // and we need index of the first element that is less or equal (floorElement) |
| if (index < 0) index = Math.max(-index - 2, 0); |
| return new ProxyIterator(myDocument, index); |
| } |
| |
| @Override |
| public void setText(@NotNull CharSequence text) { |
| } |
| |
| @Override |
| public void setEditor(@NotNull HighlighterClient editor) { |
| } |
| |
| @Override |
| public void setColorScheme(@NotNull EditorColorsScheme scheme) { |
| } |
| |
| @Override |
| public void beforeDocumentChange(DocumentEvent event) { |
| } |
| |
| @Override |
| public void documentChanged(DocumentEvent event) { |
| } |
| |
| private class ProxyIterator implements HighlighterIterator { |
| private final Document myDocument; |
| private int myIdx; |
| |
| private ProxyIterator(Document document, int idx) { |
| myDocument = document; |
| myIdx = idx; |
| } |
| |
| @Override |
| public TextAttributes getTextAttributes() { |
| return myPieces.get(myIdx).getAttributes(); |
| } |
| |
| @Override |
| public int getStart() { |
| return myPieces.get(myIdx).getStart(); |
| } |
| |
| @Override |
| public int getEnd() { |
| return myPieces.get(myIdx).getEnd(); |
| } |
| |
| @Override |
| public IElementType getTokenType() { |
| return myPieces.get(myIdx).myElementType; |
| } |
| |
| @Override |
| public void advance() { |
| if (myIdx < myPieces.size()) { |
| myIdx++; |
| } |
| } |
| |
| @Override |
| public void retreat() { |
| if (myIdx > -1) { |
| myIdx--; |
| } |
| } |
| |
| @Override |
| public boolean atEnd() { |
| return myIdx < 0 || myIdx >= myPieces.size(); |
| } |
| |
| @Override |
| public Document getDocument() { |
| return myDocument; |
| } |
| } |
| |
| private static class Element { |
| private final int myStart; |
| private final int myEnd; |
| private final IElementType myElementType; |
| private final TextAttributes myAttributes; |
| |
| private Element(int start, int end, IElementType elementType, TextAttributes attributes) { |
| myStart = start; |
| myEnd = end; |
| myElementType = elementType; |
| myAttributes = attributes; |
| } |
| |
| public int getStart() { |
| return myStart; |
| } |
| |
| public int getEnd() { |
| return myEnd; |
| } |
| |
| public IElementType getElementType() { |
| return myElementType; |
| } |
| |
| public TextAttributes getAttributes() { |
| return myAttributes; |
| } |
| } |
| } |