| /* |
| * Copyright 2000-2011 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.formatting; |
| |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * {@link BlockAlignmentProcessor} implementation for {@link Alignment} that |
| * {@link Alignment.Anchor#RIGHT anchors to the right block edge}. |
| * |
| * @author Denis Zhdanov |
| * @since 4/28/11 4:06 PM |
| */ |
| public class RightEdgeAlignmentProcessor extends AbstractBlockAlignmentProcessor { |
| |
| @Override |
| protected IndentData calculateAlignmentAnchorIndent(@NotNull Context context) { |
| LeafBlockWrapper offsetResponsibleBlock = context.alignment.getOffsetRespBlockBefore(context.targetBlock); |
| if (offsetResponsibleBlock == null) { |
| return null; |
| } |
| |
| final WhiteSpace whiteSpace = offsetResponsibleBlock.getWhiteSpace(); |
| if (whiteSpace.containsLineFeeds()) { |
| return new IndentData(whiteSpace.getIndentSpaces() + offsetResponsibleBlock.getSymbolsAtTheLastLine(), whiteSpace.getSpaces()); |
| } |
| else { |
| final int targetIndent = CoreFormatterUtil.getStartColumn(offsetResponsibleBlock) |
| + offsetResponsibleBlock.getSymbolsAtTheLastLine(); |
| final AbstractBlockWrapper prevIndentedBlock = CoreFormatterUtil.getIndentedParentBlock(context.targetBlock); |
| if (prevIndentedBlock == null) { |
| return new IndentData(0, targetIndent); |
| } |
| else { |
| final int parentIndent = prevIndentedBlock.getWhiteSpace().getIndentOffset(); |
| return new IndentData(parentIndent, targetIndent - parentIndent); |
| } |
| } |
| } |
| |
| @Override |
| protected boolean applyIndentToTheFirstBlockOnLine(@NotNull IndentData alignmentAnchorIndent, @NotNull Context context) { |
| WhiteSpace whiteSpace = context.targetBlock.getWhiteSpace(); |
| int indentSpaces = alignmentAnchorIndent.getIndentSpaces(); |
| int spaces = alignmentAnchorIndent.getSpaces() - context.targetBlock.getSymbolsAtTheLastLine(); |
| if (spaces < 0) { |
| indentSpaces += spaces; |
| spaces = 0; |
| } |
| |
| if (indentSpaces >= 0) { |
| whiteSpace.setSpaces(spaces, indentSpaces); |
| return true; |
| } |
| if (whiteSpace.getTotalSpaces() > 0) { |
| // The general idea is that there is a possible case that particular block that starts new line is much wider than its |
| // preceding aligned block and its white space is not empty. We may move it to the left then trying to preserve its |
| // indent. |
| // |
| // Example: |
| // block11 block12 |
| // test-block-that-has-rather-big-width-and-aligned-to-block12 |
| // Let's say, the last block has indent '10', hence, the result would be: |
| // block11 block12 |
| // test-block-that-has-rather-big-width-and-aligned-to-block12 |
| CompositeBlockWrapper parent = context.targetBlock.getParent(); |
| if (parent != null) { |
| IndentData childOffset = CoreFormatterUtil.getIndent( |
| context.indentOptions, context.targetBlock, context.targetBlock.getStartOffset() |
| ); |
| if (whiteSpace.getTotalSpaces() > childOffset.getTotalSpaces()) { |
| int leftShift = whiteSpace.getTotalSpaces() - childOffset.getTotalSpaces(); |
| if (leftShift >= whiteSpace.getSpaces()) { |
| spaces = 0; |
| indentSpaces = whiteSpace.getIndentSpaces() - (leftShift - whiteSpace.getSpaces()); |
| } |
| else { |
| spaces = whiteSpace.getSpaces() - leftShift; |
| indentSpaces = whiteSpace.getIndentSpaces(); |
| } |
| } |
| whiteSpace.setSpaces(spaces, indentSpaces); |
| } |
| } |
| return false; |
| } |
| |
| @Override |
| protected int getAlignmentIndentDiff(@NotNull IndentData alignmentAnchorIndent, @NotNull Context context) { |
| IndentData indentBeforeBlock = context.targetBlock.getNumberOfSymbolsBeforeBlock(); |
| int numberOfSymbolsBeforeBlock = indentBeforeBlock.getTotalSpaces() + context.targetBlock.getSymbolsAtTheLastLine(); |
| return alignmentAnchorIndent.getTotalSpaces() - numberOfSymbolsBeforeBlock; |
| } |
| } |