| /* |
| * 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; |
| |
| import com.intellij.codeInsight.completion.InsertionContext; |
| import com.intellij.lang.Language; |
| import com.intellij.openapi.editor.CaretModel; |
| import com.intellij.openapi.editor.Document; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.fileTypes.FileType; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.PsiDocumentManager; |
| import com.intellij.psi.PsiFile; |
| import com.intellij.psi.codeStyle.CodeStyleSettingsManager; |
| import com.intellij.psi.codeStyle.CommonCodeStyleSettings; |
| import com.intellij.psi.util.PsiUtilCore; |
| import org.jetbrains.annotations.NotNull; |
| |
| /** |
| * @author peter |
| */ |
| public abstract class TailType { |
| |
| public static int insertChar(final Editor editor, final int tailOffset, final char c) { |
| return insertChar(editor, tailOffset, c, true); |
| } |
| |
| public static int insertChar(Editor editor, int tailOffset, char c, boolean overwrite) { |
| Document document = editor.getDocument(); |
| int textLength = document.getTextLength(); |
| CharSequence chars = document.getCharsSequence(); |
| if (tailOffset == textLength || !overwrite || chars.charAt(tailOffset) != c){ |
| document.insertString(tailOffset, String.valueOf(c)); |
| } |
| return moveCaret(editor, tailOffset, 1); |
| } |
| |
| protected static int moveCaret(final Editor editor, final int tailOffset, final int delta) { |
| final CaretModel model = editor.getCaretModel(); |
| if (model.getOffset() == tailOffset) { |
| model.moveToOffset(tailOffset + delta); |
| } |
| return tailOffset + delta; |
| } |
| |
| public static final TailType UNKNOWN = new TailType(){ |
| @Override |
| public int processTail(final Editor editor, final int tailOffset) { |
| return tailOffset; |
| } |
| |
| public String toString() { |
| return "UNKNOWN"; |
| } |
| |
| }; |
| |
| public static final TailType NONE = new TailType(){ |
| @Override |
| public int processTail(final Editor editor, final int tailOffset) { |
| return tailOffset; |
| } |
| |
| public String toString() { |
| return "NONE"; |
| } |
| }; |
| |
| public static final TailType SEMICOLON = new CharTailType(';'); |
| @Deprecated public static final TailType EXCLAMATION = new CharTailType('!'); |
| |
| public static final TailType COMMA = new TailType(){ |
| @Override |
| public int processTail(final Editor editor, int tailOffset) { |
| CommonCodeStyleSettings styleSettings = getLocalCodeStyleSettings(editor, tailOffset); |
| if (styleSettings.SPACE_BEFORE_COMMA) tailOffset = insertChar(editor, tailOffset, ' '); |
| tailOffset = insertChar(editor, tailOffset, ','); |
| if (styleSettings.SPACE_AFTER_COMMA) tailOffset = insertChar(editor, tailOffset, ' '); |
| return tailOffset; |
| } |
| |
| public String toString() { |
| return "COMMA"; |
| } |
| }; |
| |
| protected static CommonCodeStyleSettings getLocalCodeStyleSettings(Editor editor, int tailOffset) { |
| final PsiFile psiFile = getFile(editor); |
| Language language = PsiUtilCore.getLanguageAtOffset(psiFile, tailOffset); |
| |
| final Project project = editor.getProject(); |
| assert project != null; |
| return CodeStyleSettingsManager.getSettings(project).getCommonSettings(language); |
| } |
| |
| protected static FileType getFileType(Editor editor) { |
| PsiFile psiFile = getFile(editor); |
| return psiFile.getFileType(); |
| } |
| |
| @NotNull |
| private static PsiFile getFile(Editor editor) { |
| Project project = editor.getProject(); |
| assert project != null; |
| PsiFile psiFile = PsiDocumentManager.getInstance(project).getPsiFile(editor.getDocument()); |
| assert psiFile != null; |
| return psiFile; |
| } |
| |
| /** |
| * insert a space, overtype if already present |
| */ |
| public static final TailType SPACE = new CharTailType(' '); |
| /** |
| * always insert a space |
| */ |
| public static final TailType INSERT_SPACE = new CharTailType(' ', false); |
| /** |
| * insert a space unless there's one at the caret position already, followed by a word |
| */ |
| public static final TailType HUMBLE_SPACE_BEFORE_WORD = new CharTailType(' ', false) { |
| |
| @Override |
| public boolean isApplicable(@NotNull InsertionContext context) { |
| CharSequence text = context.getDocument().getCharsSequence(); |
| int tail = context.getTailOffset(); |
| if (text.length() > tail + 1 && text.charAt(tail) == ' ' && Character.isLetter(text.charAt(tail + 1))) { |
| return false; |
| } |
| return super.isApplicable(context); |
| } |
| |
| @Override |
| public String toString() { |
| return "HUMBLE_SPACE_BEFORE_WORD"; |
| } |
| }; |
| public static final TailType DOT = new CharTailType('.'); |
| |
| public static final TailType CASE_COLON = new CharTailType(':'); |
| public static final TailType COND_EXPR_COLON = new TailType(){ |
| @Override |
| public int processTail(final Editor editor, final int tailOffset) { |
| Document document = editor.getDocument(); |
| int textLength = document.getTextLength(); |
| CharSequence chars = document.getCharsSequence(); |
| |
| if (tailOffset < textLength - 1 && chars.charAt(tailOffset) == ' ' && chars.charAt(tailOffset + 1) == ':') { |
| return moveCaret(editor, tailOffset, 2); |
| } |
| if (tailOffset < textLength && chars.charAt(tailOffset) == ':') { |
| return moveCaret(editor, tailOffset, 1); |
| } |
| document.insertString(tailOffset, " : "); |
| return moveCaret(editor, tailOffset, 3); |
| } |
| |
| public String toString() { |
| return "COND_EXPR_COLON"; |
| } |
| }; |
| |
| public static final TailType EQ = new TailTypeEQ(); |
| |
| public static class TailTypeEQ extends TailType { |
| |
| protected boolean isSpaceAroundAssignmentOperators(Editor editor, int tailOffset) { |
| return CodeStyleSettingsManager.getSettings(editor.getProject()).SPACE_AROUND_ASSIGNMENT_OPERATORS; |
| } |
| |
| @Override |
| public int processTail(final Editor editor, int tailOffset) { |
| Document document = editor.getDocument(); |
| int textLength = document.getTextLength(); |
| CharSequence chars = document.getCharsSequence(); |
| if (tailOffset < textLength - 1 && chars.charAt(tailOffset) == ' ' && chars.charAt(tailOffset + 1) == '='){ |
| return moveCaret(editor, tailOffset, 2); |
| } |
| if (tailOffset < textLength && chars.charAt(tailOffset) == '='){ |
| return moveCaret(editor, tailOffset, 1); |
| } |
| if (isSpaceAroundAssignmentOperators(editor, tailOffset)) { |
| document.insertString(tailOffset, " ="); |
| tailOffset = moveCaret(editor, tailOffset, 2); |
| tailOffset = insertChar(editor, tailOffset, ' '); |
| } |
| else{ |
| document.insertString(tailOffset, "="); |
| tailOffset = moveCaret(editor, tailOffset, 1); |
| } |
| return tailOffset; |
| } |
| } |
| |
| public static final TailType LPARENTH = new CharTailType('('); |
| |
| public abstract int processTail(final Editor editor, int tailOffset); |
| |
| public static TailType createSimpleTailType(final char c) { |
| return new CharTailType(c); |
| } |
| |
| public boolean isApplicable(@NotNull final InsertionContext context) { |
| return true; |
| } |
| } |