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/*
* 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;
import com.intellij.ide.DataManager;
import com.intellij.openapi.actionSystem.CommonDataKeys;
import com.intellij.openapi.actionSystem.DataContext;
import com.intellij.openapi.editor.Document;
import com.intellij.openapi.editor.Editor;
import com.intellij.openapi.editor.FoldRegion;
import com.intellij.openapi.editor.actionSystem.EditorActionHandler;
import com.intellij.openapi.project.Project;
import com.intellij.openapi.util.Ref;
import com.intellij.openapi.util.TextRange;
import com.intellij.psi.*;
import com.intellij.util.Processor;
public class UnSelectWordHandler extends EditorActionHandler {
private final EditorActionHandler myOriginalHandler;
public UnSelectWordHandler(EditorActionHandler originalHandler) {
super(true);
myOriginalHandler = originalHandler;
}
@Override
public void execute(Editor editor, DataContext dataContext) {
Project project = CommonDataKeys.PROJECT.getData(DataManager.getInstance().getDataContext(editor.getComponent()));
Document document = editor.getDocument();
final PsiFile file = PsiDocumentManager.getInstance(project).getPsiFile(document);
if (file == null) {
if (myOriginalHandler != null) {
myOriginalHandler.execute(editor, dataContext);
}
return;
}
PsiDocumentManager.getInstance(project).commitAllDocuments();
doAction(editor, file);
}
private static void doAction(final Editor editor, PsiFile file) {
if (file instanceof PsiCompiledFile) {
file = ((PsiCompiledFile)file).getDecompiledPsiFile();
if (file == null) return;
}
if (!editor.getSelectionModel().hasSelection()) {
return;
}
CharSequence text = editor.getDocument().getCharsSequence();
int cursorOffset = editor.getCaretModel().getOffset();
if (cursorOffset > 0 && cursorOffset < text.length() &&
!Character.isJavaIdentifierPart(text.charAt(cursorOffset)) &&
Character.isJavaIdentifierPart(text.charAt(cursorOffset - 1))) {
cursorOffset--;
}
PsiElement element = file.findElementAt(cursorOffset);
if (element instanceof PsiWhiteSpace && cursorOffset > 0) {
PsiElement anotherElement = file.findElementAt(cursorOffset - 1);
if (!(anotherElement instanceof PsiWhiteSpace)) {
element = anotherElement;
}
}
if (element instanceof PsiWhiteSpace) {
PsiElement nextSibling = element.getNextSibling();
if (nextSibling == null) {
element = element.getParent();
if (element == null || element instanceof PsiFile) {
return;
}
nextSibling = element.getNextSibling();
if (nextSibling == null) {
return;
}
}
element = nextSibling;
cursorOffset = element.getTextRange().getStartOffset();
}
final TextRange selectionRange = new TextRange(editor.getSelectionModel().getSelectionStart(), editor.getSelectionModel().getSelectionEnd());
final Ref<TextRange> maximumRange = new Ref<TextRange>();
final int finalCursorOffset = cursorOffset;
SelectWordUtil.processRanges(element, text, cursorOffset, editor, new Processor<TextRange>() {
@Override
public boolean process(TextRange range) {
if (selectionRange.contains(range) && !range.equals(selectionRange) &&
(range.contains(finalCursorOffset) || finalCursorOffset == range.getEndOffset()) &&
!isOffsetCollapsed(range.getStartOffset()) && !isOffsetCollapsed(range.getEndOffset())) {
if (maximumRange.get() == null || range.contains(maximumRange.get())) {
maximumRange.set(range);
}
}
return false;
}
private boolean isOffsetCollapsed(int offset) {
FoldRegion region = editor.getFoldingModel().getCollapsedRegionAtOffset(offset);
return region != null && region.getStartOffset() != offset && region.getEndOffset() != offset;
}
});
TextRange range = maximumRange.get();
if (range == null) {
editor.getSelectionModel().setSelection(cursorOffset, cursorOffset);
}
else {
editor.getSelectionModel().setSelection(range.getStartOffset(), range.getEndOffset());
}
}
}
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