@Override
public void beforeDocumentChangeAtCaret() {
CaretModel caretModel = myEditor.getCaretModel();
VisualPosition visualCaretPosition = caretModel.getVisualPosition();
if (!isInsideSoftWrap(visualCaretPosition)) {
return;
}
SoftWrap softWrap = myStorage.getSoftWrap(caretModel.getOffset());
if (softWrap == null) {
return;
}
myEditor
.getDocument()
.replaceString(softWrap.getStart(), softWrap.getEnd(), softWrap.getText());
caretModel.moveToVisualPosition(visualCaretPosition);
}
/**
* Applies given caret/selection state to the editor. Editor text must have been set up
* previously.
*/
public static void setCaretsAndSelection(Editor editor, CaretAndSelectionState caretsState) {
CaretModel caretModel = editor.getCaretModel();
if (caretModel.supportsMultipleCarets()) {
List<CaretState> states = new ArrayList<CaretState>(caretsState.carets.size());
for (CaretInfo caret : caretsState.carets) {
states.add(
new CaretState(
caret.position == null
? null
: editor.offsetToLogicalPosition(caret.getCaretOffset(editor.getDocument())),
caret.selection == null
? null
: editor.offsetToLogicalPosition(caret.selection.getStartOffset()),
caret.selection == null
? null
: editor.offsetToLogicalPosition(caret.selection.getEndOffset())));
}
caretModel.setCaretsAndSelections(states);
} else {
assertEquals("Multiple carets are not supported by the model", 1, caretsState.carets.size());
CaretInfo caret = caretsState.carets.get(0);
if (caret.position != null) {
caretModel.moveToOffset(caret.getCaretOffset(editor.getDocument()));
}
if (caret.selection != null) {
editor
.getSelectionModel()
.setSelection(caret.selection.getStartOffset(), caret.selection.getEndOffset());
} else {
editor.getSelectionModel().removeSelection();
}
}
if (caretsState.blockSelection != null) {
editor
.getSelectionModel()
.setBlockSelection(
editor.offsetToLogicalPosition(caretsState.blockSelection.getStartOffset()),
editor.offsetToLogicalPosition(caretsState.blockSelection.getEndOffset()));
}
}
@Override
@SuppressWarnings({"AssignmentToForLoopParameter"})
public void paint(
@NotNull Editor editor, @NotNull RangeHighlighter highlighter, @NotNull Graphics g) {
int startOffset = highlighter.getStartOffset();
final Document doc = highlighter.getDocument();
if (startOffset >= doc.getTextLength()) return;
final int endOffset = highlighter.getEndOffset();
final int endLine = doc.getLineNumber(endOffset);
int off;
int startLine = doc.getLineNumber(startOffset);
IndentGuideDescriptor descriptor =
editor.getIndentsModel().getDescriptor(startLine, endLine);
final CharSequence chars = doc.getCharsSequence();
do {
int start = doc.getLineStartOffset(startLine);
int end = doc.getLineEndOffset(startLine);
off = CharArrayUtil.shiftForward(chars, start, end, " \t");
startLine--;
} while (startLine > 1 && off < doc.getTextLength() && chars.charAt(off) == '\n');
final VisualPosition startPosition = editor.offsetToVisualPosition(off);
int indentColumn = startPosition.column;
// It's considered that indent guide can cross not only white space but comments, javadocs
// etc. Hence, there is a possible
// case that the first indent guide line is, say, single-line comment where comment
// symbols ('//') are located at the first
// visual column. We need to calculate correct indent guide column then.
int lineShift = 1;
if (indentColumn <= 0 && descriptor != null) {
indentColumn = descriptor.indentLevel;
lineShift = 0;
}
if (indentColumn <= 0) return;
final FoldingModel foldingModel = editor.getFoldingModel();
if (foldingModel.isOffsetCollapsed(off)) return;
final FoldRegion headerRegion =
foldingModel.getCollapsedRegionAtOffset(doc.getLineEndOffset(doc.getLineNumber(off)));
final FoldRegion tailRegion =
foldingModel.getCollapsedRegionAtOffset(
doc.getLineStartOffset(doc.getLineNumber(endOffset)));
if (tailRegion != null && tailRegion == headerRegion) return;
final boolean selected;
final IndentGuideDescriptor guide = editor.getIndentsModel().getCaretIndentGuide();
if (guide != null) {
final CaretModel caretModel = editor.getCaretModel();
final int caretOffset = caretModel.getOffset();
selected =
caretOffset >= off
&& caretOffset < endOffset
&& caretModel.getLogicalPosition().column == indentColumn;
} else {
selected = false;
}
Point start =
editor.visualPositionToXY(
new VisualPosition(startPosition.line + lineShift, indentColumn));
final VisualPosition endPosition = editor.offsetToVisualPosition(endOffset);
Point end =
editor.visualPositionToXY(new VisualPosition(endPosition.line, endPosition.column));
int maxY = end.y;
if (endPosition.line == editor.offsetToVisualPosition(doc.getTextLength()).line) {
maxY += editor.getLineHeight();
}
Rectangle clip = g.getClipBounds();
if (clip != null) {
if (clip.y >= maxY || clip.y + clip.height <= start.y) {
return;
}
maxY = Math.min(maxY, clip.y + clip.height);
}
final EditorColorsScheme scheme = editor.getColorsScheme();
g.setColor(
selected
? scheme.getColor(EditorColors.SELECTED_INDENT_GUIDE_COLOR)
: scheme.getColor(EditorColors.INDENT_GUIDE_COLOR));
// There is a possible case that indent line intersects soft wrap-introduced text.
// Example:
// this is a long line <soft-wrap>
// that| is soft-wrapped
// |
// | <- vertical indent
//
// Also it's possible that no additional intersections are added because of soft wrap:
// this is a long line <soft-wrap>
// | that is soft-wrapped
// |
// | <- vertical indent
// We want to use the following approach then:
// 1. Show only active indent if it crosses soft wrap-introduced text;
// 2. Show indent as is if it doesn't intersect with soft wrap-introduced text;
if (selected) {
g.drawLine(start.x + 2, start.y, start.x + 2, maxY);
} else {
int y = start.y;
int newY = start.y;
SoftWrapModel softWrapModel = editor.getSoftWrapModel();
int lineHeight = editor.getLineHeight();
for (int i = Math.max(0, startLine + lineShift); i < endLine && newY < maxY; i++) {
List<? extends SoftWrap> softWraps = softWrapModel.getSoftWrapsForLine(i);
int logicalLineHeight = softWraps.size() * lineHeight;
if (i > startLine + lineShift) {
logicalLineHeight +=
lineHeight; // We assume that initial 'y' value points just below the target
// line.
}
if (!softWraps.isEmpty() && softWraps.get(0).getIndentInColumns() < indentColumn) {
if (y < newY
|| i
> startLine
+ lineShift) { // There is a possible case that soft wrap is located on
// indent start line.
g.drawLine(start.x + 2, y, start.x + 2, newY + lineHeight);
}
newY += logicalLineHeight;
y = newY;
} else {
newY += logicalLineHeight;
}
FoldRegion foldRegion =
foldingModel.getCollapsedRegionAtOffset(doc.getLineEndOffset(i));
if (foldRegion != null && foldRegion.getEndOffset() < doc.getTextLength()) {
i = doc.getLineNumber(foldRegion.getEndOffset());
}
}
if (y < maxY) {
g.drawLine(start.x + 2, y, start.x + 2, maxY);
}
}
}
public static void verifyCaretAndSelectionState(
Editor editor, CaretAndSelectionState caretState, String message) {
boolean hasChecks = false;
for (int i = 0; i < caretState.carets.size(); i++) {
EditorTestUtil.CaretInfo expected = caretState.carets.get(i);
if (expected.position != null || expected.selection != null) {
hasChecks = true;
break;
}
}
if (!hasChecks) {
return; // nothing to check, so we skip caret/selection assertions
}
String messageSuffix = message == null ? "" : (message + ": ");
CaretModel caretModel = editor.getCaretModel();
List<Caret> allCarets = new ArrayList<Caret>(caretModel.getAllCarets());
assertEquals(
messageSuffix + " Unexpected number of carets", caretState.carets.size(), allCarets.size());
for (int i = 0; i < caretState.carets.size(); i++) {
String caretDescription =
caretState.carets.size() == 1
? ""
: "caret " + (i + 1) + "/" + caretState.carets.size() + " ";
Caret currentCaret = allCarets.get(i);
int actualCaretLine = editor.getDocument().getLineNumber(currentCaret.getOffset());
int actualCaretColumn =
currentCaret.getOffset() - editor.getDocument().getLineStartOffset(actualCaretLine);
LogicalPosition actualCaretPosition = new LogicalPosition(actualCaretLine, actualCaretColumn);
int selectionStart = currentCaret.getSelectionStart();
int selectionEnd = currentCaret.getSelectionEnd();
LogicalPosition actualSelectionStart = editor.offsetToLogicalPosition(selectionStart);
LogicalPosition actualSelectionEnd = editor.offsetToLogicalPosition(selectionEnd);
CaretInfo expected = caretState.carets.get(i);
if (expected.position != null) {
assertEquals(
messageSuffix + caretDescription + "unexpected caret position",
expected.position,
actualCaretPosition);
}
if (expected.selection != null) {
LogicalPosition expectedSelectionStart =
editor.offsetToLogicalPosition(expected.selection.getStartOffset());
LogicalPosition expectedSelectionEnd =
editor.offsetToLogicalPosition(expected.selection.getEndOffset());
assertEquals(
messageSuffix + caretDescription + "unexpected selection start",
expectedSelectionStart,
actualSelectionStart);
assertEquals(
messageSuffix + caretDescription + "unexpected selection end",
expectedSelectionEnd,
actualSelectionEnd);
} else {
assertFalse(
messageSuffix
+ caretDescription
+ "should has no selection, but was: ("
+ actualSelectionStart
+ ", "
+ actualSelectionEnd
+ ")",
currentCaret.hasSelection());
}
}
}
