/**
* Emulates pressing <code>Enter</code> at current caret position.
*
* @param editor target editor
* @param project target project
* @param shifts two-elements array which is expected to be filled with the following info: 1. The
* first element holds added lines number; 2. The second element holds added symbols number;
*/
private static void emulateEnter(
@NotNull final Editor editor, @NotNull Project project, int[] shifts) {
final DataContext dataContext = prepareContext(editor.getComponent(), project);
int caretOffset = editor.getCaretModel().getOffset();
Document document = editor.getDocument();
SelectionModel selectionModel = editor.getSelectionModel();
int startSelectionOffset = 0;
int endSelectionOffset = 0;
boolean restoreSelection = selectionModel.hasSelection();
if (restoreSelection) {
startSelectionOffset = selectionModel.getSelectionStart();
endSelectionOffset = selectionModel.getSelectionEnd();
selectionModel.removeSelection();
}
int textLengthBeforeWrap = document.getTextLength();
int lineCountBeforeWrap = document.getLineCount();
DataManager.getInstance()
.saveInDataContext(dataContext, WRAP_LONG_LINE_DURING_FORMATTING_IN_PROGRESS_KEY, true);
CommandProcessor commandProcessor = CommandProcessor.getInstance();
try {
Runnable command =
new Runnable() {
@Override
public void run() {
EditorActionManager.getInstance()
.getActionHandler(IdeActions.ACTION_EDITOR_ENTER)
.execute(editor, dataContext);
}
};
if (commandProcessor.getCurrentCommand() == null) {
commandProcessor.executeCommand(editor.getProject(), command, WRAP_LINE_COMMAND_NAME, null);
} else {
command.run();
}
} finally {
DataManager.getInstance()
.saveInDataContext(dataContext, WRAP_LONG_LINE_DURING_FORMATTING_IN_PROGRESS_KEY, null);
}
int symbolsDiff = document.getTextLength() - textLengthBeforeWrap;
if (restoreSelection) {
int newSelectionStart = startSelectionOffset;
int newSelectionEnd = endSelectionOffset;
if (startSelectionOffset >= caretOffset) {
newSelectionStart += symbolsDiff;
}
if (endSelectionOffset >= caretOffset) {
newSelectionEnd += symbolsDiff;
}
selectionModel.setSelection(newSelectionStart, newSelectionEnd);
}
shifts[0] = document.getLineCount() - lineCountBeforeWrap;
shifts[1] = symbolsDiff;
}
public ASTNode processRange(final ASTNode element, final int startOffset, final int endOffset) {
final PsiElement psiElement = SourceTreeToPsiMap.treeElementToPsi(element);
assert psiElement != null;
final PsiFile file = psiElement.getContainingFile();
final Document document = file.getViewProvider().getDocument();
final RangeMarker rangeMarker =
document != null && endOffset < document.getTextLength()
? document.createRangeMarker(startOffset, endOffset)
: null;
PsiElement elementToFormat =
document instanceof DocumentWindow
? InjectedLanguageManager.getInstance(file.getProject()).getTopLevelFile(file)
: psiElement;
final PsiFile fileToFormat = elementToFormat.getContainingFile();
final FormattingModelBuilder builder = LanguageFormatting.INSTANCE.forContext(fileToFormat);
if (builder != null) {
TextRange range = preprocess(element, TextRange.create(startOffset, endOffset));
if (document instanceof DocumentWindow) {
DocumentWindow documentWindow = (DocumentWindow) document;
range = documentWindow.injectedToHost(range);
}
// final SmartPsiElementPointer pointer =
// SmartPointerManager.getInstance(psiElement.getProject()).createSmartPsiElementPointer(psiElement);
final FormattingModel model =
CoreFormatterUtil.buildModel(
builder, elementToFormat, mySettings, FormattingMode.REFORMAT);
if (file.getTextLength() > 0) {
try {
FormatterEx.getInstanceEx()
.format(
model,
mySettings,
mySettings.getIndentOptions(fileToFormat.getFileType()),
new FormatTextRanges(range, true));
wrapLongLinesIfNecessary(file, document, startOffset, endOffset);
} catch (IncorrectOperationException e) {
LOG.error(e);
}
}
if (!psiElement.isValid()) {
if (rangeMarker != null) {
final PsiElement at = file.findElementAt(rangeMarker.getStartOffset());
final PsiElement result = PsiTreeUtil.getParentOfType(at, psiElement.getClass(), false);
assert result != null;
rangeMarker.dispose();
return result.getNode();
} else {
assert false;
}
}
// return SourceTreeToPsiMap.psiElementToTree(pointer.getElement());
}
if (rangeMarker != null) {
rangeMarker.dispose();
}
return element;
}
public void doWrapLongLinesIfNecessary(
@NotNull final Editor editor,
@NotNull final Project project,
@NotNull Document document,
int startOffset,
int endOffset) {
// Normalization.
int startOffsetToUse = Math.min(document.getTextLength(), Math.max(0, startOffset));
int endOffsetToUse = Math.min(document.getTextLength(), Math.max(0, endOffset));
LineWrapPositionStrategy strategy = LanguageLineWrapPositionStrategy.INSTANCE.forEditor(editor);
CharSequence text = document.getCharsSequence();
int startLine = document.getLineNumber(startOffsetToUse);
int endLine = document.getLineNumber(Math.max(0, endOffsetToUse - 1));
int maxLine = Math.min(document.getLineCount(), endLine + 1);
int tabSize = EditorUtil.getTabSize(editor);
if (tabSize <= 0) {
tabSize = 1;
}
int spaceSize = EditorUtil.getSpaceWidth(Font.PLAIN, editor);
int[] shifts = new int[2];
// shifts[0] - lines shift.
// shift[1] - offset shift.
for (int line = startLine; line < maxLine; line++) {
int startLineOffset = document.getLineStartOffset(line);
int endLineOffset = document.getLineEndOffset(line);
final int preferredWrapPosition =
calculatePreferredWrapPosition(
editor, text, tabSize, spaceSize, startLineOffset, endLineOffset, endOffsetToUse);
if (preferredWrapPosition < 0 || preferredWrapPosition >= endLineOffset) {
continue;
}
if (preferredWrapPosition >= endOffsetToUse) {
return;
}
// We know that current line exceeds right margin if control flow reaches this place, so, wrap
// it.
int wrapOffset =
strategy.calculateWrapPosition(
document,
editor.getProject(),
Math.max(startLineOffset, startOffsetToUse),
Math.min(endLineOffset, endOffsetToUse),
preferredWrapPosition,
false,
false);
if (wrapOffset < 0 // No appropriate wrap position is found.
// No point in splitting line when its left part contains only white spaces, example:
// line start -> | | <- right margin
// | aaaaaaaaaaaaaaaa|aaaaaaaaaaaaaaaaaaaa() <- don't want to wrap this
// line even if it exceeds right margin
|| CharArrayUtil.shiftBackward(text, startLineOffset, wrapOffset - 1, " \t")
< startLineOffset) {
continue;
}
// Move caret to the target position and emulate pressing <enter>.
editor.getCaretModel().moveToOffset(wrapOffset);
emulateEnter(editor, project, shifts);
// We know that number of lines is just increased, hence, update the data accordingly.
maxLine += shifts[0];
endOffsetToUse += shifts[1];
}
}
public void processText(
PsiFile file, final FormatTextRanges ranges, boolean doPostponedFormatting) {
final Project project = file.getProject();
Document document = PsiDocumentManager.getInstance(project).getDocument(file);
final List<FormatTextRanges.FormatTextRange> textRanges = ranges.getRanges();
if (document instanceof DocumentWindow) {
file = InjectedLanguageManager.getInstance(file.getProject()).getTopLevelFile(file);
final DocumentWindow documentWindow = (DocumentWindow) document;
for (FormatTextRanges.FormatTextRange range : textRanges) {
range.setTextRange(documentWindow.injectedToHost(range.getTextRange()));
}
document = documentWindow.getDelegate();
}
final FormattingModelBuilder builder = LanguageFormatting.INSTANCE.forContext(file);
if (builder != null) {
if (file.getTextLength() > 0) {
try {
final PsiElement startElement =
file.findElementAt(textRanges.get(0).getTextRange().getStartOffset());
final PsiElement endElement =
file.findElementAt(
textRanges.get(textRanges.size() - 1).getTextRange().getEndOffset() - 1);
final PsiElement commonParent =
startElement != null && endElement != null
? PsiTreeUtil.findCommonParent(startElement, endElement)
: null;
ASTNode node = null;
if (commonParent != null) {
node = commonParent.getNode();
}
if (node == null) {
node = file.getNode();
}
for (FormatTextRanges.FormatTextRange range : ranges.getRanges()) {
TextRange rangeToUse = preprocess(node, range.getTextRange());
range.setTextRange(rangeToUse);
}
if (doPostponedFormatting) {
RangeMarker[] markers = new RangeMarker[textRanges.size()];
int i = 0;
for (FormatTextRanges.FormatTextRange range : textRanges) {
TextRange textRange = range.getTextRange();
int start = textRange.getStartOffset();
int end = textRange.getEndOffset();
if (start >= 0 && end > start && end <= document.getTextLength()) {
markers[i] = document.createRangeMarker(textRange);
markers[i].setGreedyToLeft(true);
markers[i].setGreedyToRight(true);
i++;
}
}
final PostprocessReformattingAspect component =
file.getProject().getComponent(PostprocessReformattingAspect.class);
FormattingProgressTask.FORMATTING_CANCELLED_FLAG.set(false);
component.doPostponedFormatting(file.getViewProvider());
i = 0;
for (FormatTextRanges.FormatTextRange range : textRanges) {
RangeMarker marker = markers[i];
if (marker != null) {
range.setTextRange(TextRange.create(marker));
marker.dispose();
}
i++;
}
}
if (FormattingProgressTask.FORMATTING_CANCELLED_FLAG.get()) {
return;
}
final FormattingModel originalModel =
CoreFormatterUtil.buildModel(builder, file, mySettings, FormattingMode.REFORMAT);
final FormattingModel model =
new DocumentBasedFormattingModel(
originalModel.getRootBlock(),
document,
project,
mySettings,
file.getFileType(),
file);
FormatterEx formatter = FormatterEx.getInstanceEx();
if (CodeStyleManager.getInstance(project).isSequentialProcessingAllowed()) {
formatter.setProgressTask(new FormattingProgressTask(project, file, document));
}
CommonCodeStyleSettings.IndentOptions indentOptions = null;
if (builder instanceof FormattingModelBuilderEx) {
indentOptions =
((FormattingModelBuilderEx) builder)
.getIndentOptionsToUse(file, ranges, mySettings);
}
if (indentOptions == null) {
indentOptions = mySettings.getIndentOptions(file.getFileType());
}
formatter.format(model, mySettings, indentOptions, ranges);
for (FormatTextRanges.FormatTextRange range : textRanges) {
TextRange textRange = range.getTextRange();
wrapLongLinesIfNecessary(
file, document, textRange.getStartOffset(), textRange.getEndOffset());
}
} catch (IncorrectOperationException e) {
LOG.error(e);
}
}
}
}