| /* |
| * 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.codeInsight.editorActions.moveUpDown; |
| |
| import com.intellij.lang.ASTNode; |
| import com.intellij.lang.DependentLanguage; |
| import com.intellij.openapi.actionSystem.DataContext; |
| import com.intellij.openapi.editor.Document; |
| import com.intellij.openapi.editor.Editor; |
| import com.intellij.openapi.editor.actionSystem.EditorWriteActionHandler; |
| import com.intellij.openapi.project.Project; |
| import com.intellij.psi.PsiDocumentManager; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.psi.PsiFile; |
| import com.intellij.psi.util.PsiUtilBase; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * @author Dennis.Ushakov |
| */ |
| public abstract class BaseMoveHandler extends EditorWriteActionHandler { |
| protected final boolean isDown; |
| |
| public BaseMoveHandler(boolean down) { |
| super(true); |
| isDown = down; |
| } |
| |
| @Override |
| public void executeWriteAction(Editor editor, DataContext dataContext) { |
| final Project project = editor.getProject(); |
| final PsiDocumentManager documentManager = PsiDocumentManager.getInstance(project); |
| final Document document = editor.getDocument(); |
| PsiFile file = getRoot(documentManager.getPsiFile(document), editor); |
| |
| if (file != null) { |
| final MoverWrapper mover = getSuitableMover(editor, file); |
| if (mover != null) { |
| mover.move(editor,file); |
| } |
| } |
| } |
| |
| @Override |
| public boolean isEnabled(Editor editor, DataContext dataContext) { |
| if (editor.isViewer() || editor.isOneLineMode()) return false; |
| final Project project = editor.getProject(); |
| if (project == null || project.isDisposed()) return false; |
| final PsiDocumentManager documentManager = PsiDocumentManager.getInstance(project); |
| final Document document = editor.getDocument(); |
| documentManager.commitDocument(document); |
| PsiFile psiFile = documentManager.getPsiFile(document); |
| PsiFile file = getRoot(psiFile, editor); |
| if (file == null) return false; |
| final MoverWrapper mover = getSuitableMover(editor, file); |
| if (mover == null || mover.getInfo().toMove2 == null) return false; |
| final int maxLine = editor.offsetToLogicalPosition(editor.getDocument().getTextLength()).line; |
| final LineRange range = mover.getInfo().toMove; |
| if (range.startLine == 0 && !isDown) return false; |
| |
| return range.endLine <= maxLine || !isDown; |
| } |
| |
| @Nullable |
| protected abstract MoverWrapper getSuitableMover(@NotNull Editor editor, @NotNull PsiFile file); |
| |
| @Nullable |
| private static PsiFile getRoot(final PsiFile file, final Editor editor) { |
| if (file == null) return null; |
| int offset = editor.getCaretModel().getOffset(); |
| if (offset == editor.getDocument().getTextLength()) offset--; |
| if (offset<0) return null; |
| PsiElement leafElement = file.findElementAt(offset); |
| if (leafElement == null) return null; |
| if (leafElement.getLanguage() instanceof DependentLanguage) { |
| leafElement = file.getViewProvider().findElementAt(offset, file.getViewProvider().getBaseLanguage()); |
| if (leafElement == null) return null; |
| } |
| ASTNode node = leafElement.getNode(); |
| if (node == null) return null; |
| return (PsiFile)PsiUtilBase.getRoot(node).getPsi(); |
| } |
| } |