| /* |
| * 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.jetbrains.python.codeInsight; |
| |
| import com.intellij.codeInsight.editorActions.CodeBlockProvider; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.util.TextRange; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiFile; |
| import com.intellij.psi.PsiWhiteSpace; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.jetbrains.python.psi.PyStatement; |
| import com.jetbrains.python.psi.PyStatementList; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * @author yole |
| */ |
| public class PyCodeBlockProvider implements CodeBlockProvider { |
| @Nullable |
| @Override |
| public TextRange getCodeBlockRange(Editor editor, PsiFile psiFile) { |
| int caretOffset = editor.getCaretModel().getOffset(); |
| PsiElement element = psiFile.findElementAt(caretOffset); |
| if (element == null) { |
| return null; |
| } |
| while (caretOffset > 0 && element instanceof PsiWhiteSpace) { |
| caretOffset--; |
| element = psiFile.findElementAt(caretOffset); |
| } |
| PyStatement statement = PsiTreeUtil.getParentOfType(element, PyStatement.class); |
| if (statement != null) { |
| PyStatementList statementList = PsiTreeUtil.findChildOfType(statement, PyStatementList.class); |
| |
| // if the statement above caret is not a block statement, look above for a statement list and then find the statement above |
| // that statement list |
| if (statementList == null) { |
| statementList = PsiTreeUtil.getParentOfType(statement, PyStatementList.class); |
| if (statementList != null) { |
| statement = PsiTreeUtil.getParentOfType(statementList, PyStatement.class); |
| } |
| } |
| if (statement != null) { |
| // if we're in the beginning of the statement already, pressing Ctrl-[ again should move the caret one statement higher |
| final int statementStart = statement.getTextRange().getStartOffset(); |
| int statementEnd = statement.getTextRange().getEndOffset(); |
| while (statementEnd > statementStart && psiFile.findElementAt(statementEnd) instanceof PsiWhiteSpace) { |
| statementEnd--; |
| } |
| if (caretOffset == statementStart || caretOffset == statementEnd) { |
| final PyStatement statementAbove = PsiTreeUtil.getParentOfType(statement, PyStatement.class); |
| if (statementAbove != null) { |
| if (caretOffset == statementStart) { |
| return new TextRange(statementAbove.getTextRange().getStartOffset(), statementEnd); |
| } |
| else { |
| return new TextRange(statementStart, statementAbove.getTextRange().getEndOffset()); |
| } |
| } |
| } |
| return statement.getTextRange(); |
| } |
| } |
| return null; |
| } |
| } |