@Override
public void prepare(
@NotNull List<ArrangementEntryWrapper<E>> toArrange, @NotNull Context<E> context) {
ArrangementEntryWrapper<E> parent = toArrange.get(0).getParent();
if (parent == null) {
myParentText = context.document.getText();
myParentShift = 0;
} else {
myParentText =
context
.document
.getCharsSequence()
.subSequence(parent.getStartOffset(), parent.getEndOffset())
.toString();
myParentShift = parent.getStartOffset();
}
}
@SuppressWarnings("AssignmentToForLoopParameter")
@Override
public void replace(
@NotNull ArrangementEntryWrapper<E> newWrapper,
@NotNull ArrangementEntryWrapper<E> oldWrapper,
@Nullable ArrangementEntryWrapper<E> previous,
@NotNull Context<E> context) {
// Calculate blank lines before the arrangement.
int blankLinesBefore = oldWrapper.getBlankLinesBefore();
ArrangementEntryWrapper<E> parentWrapper = oldWrapper.getParent();
int desiredBlankLinesNumber =
context.rearranger.getBlankLines(
context.settings,
parentWrapper == null ? null : parentWrapper.getEntry(),
previous == null ? null : previous.getEntry(),
newWrapper.getEntry());
if ((desiredBlankLinesNumber < 0 || desiredBlankLinesNumber == blankLinesBefore)
&& newWrapper.equals(oldWrapper)) {
return;
}
int lineFeedsDiff = desiredBlankLinesNumber - blankLinesBefore;
int insertionOffset = oldWrapper.getStartOffset();
if (oldWrapper.getStartOffset() > newWrapper.getStartOffset()) {
insertionOffset -= newWrapper.getEndOffset() - newWrapper.getStartOffset();
}
if (newWrapper.getStartOffset() != oldWrapper.getStartOffset()
|| !newWrapper.equals(oldWrapper)) {
context.addMoveInfo(
newWrapper.getStartOffset(), newWrapper.getEndOffset(), oldWrapper.getStartOffset());
myDocument.moveText(
newWrapper.getStartOffset(), newWrapper.getEndOffset(), oldWrapper.getStartOffset());
for (int i = myWrappers.size() - 1; i >= 0; i--) {
ArrangementEntryWrapper<E> w = myWrappers.get(i);
if (w == newWrapper) {
continue;
}
if (w.getStartOffset() >= oldWrapper.getStartOffset()
&& w.getStartOffset() < newWrapper.getStartOffset()) {
w.applyShift(newWrapper.getEndOffset() - newWrapper.getStartOffset());
} else if (w.getStartOffset() < oldWrapper.getStartOffset()
&& w.getStartOffset() > newWrapper.getStartOffset()) {
w.applyShift(newWrapper.getStartOffset() - newWrapper.getEndOffset());
}
}
}
if (desiredBlankLinesNumber >= 0 && lineFeedsDiff > 0) {
myDocument.insertString(insertionOffset, StringUtil.repeat("\n", lineFeedsDiff));
shiftOffsets(lineFeedsDiff, insertionOffset);
}
if (desiredBlankLinesNumber >= 0 && lineFeedsDiff < 0) {
// Cut exceeding blank lines.
int replacementStartOffset = getBlankLineOffset(-lineFeedsDiff, insertionOffset);
myDocument.deleteString(replacementStartOffset, insertionOffset);
shiftOffsets(replacementStartOffset - insertionOffset, insertionOffset);
}
// Update wrapper ranges.
if (desiredBlankLinesNumber < 0 || lineFeedsDiff == 0 || parentWrapper == null) {
return;
}
Deque<ArrangementEntryWrapper<E>> parents = new ArrayDeque<ArrangementEntryWrapper<E>>();
do {
parents.add(parentWrapper);
parentWrapper.setEndOffset(parentWrapper.getEndOffset() + lineFeedsDiff);
parentWrapper = parentWrapper.getParent();
} while (parentWrapper != null);
while (!parents.isEmpty()) {
for (ArrangementEntryWrapper<E> wrapper = parents.removeLast().getNext();
wrapper != null;
wrapper = wrapper.getNext()) {
wrapper.applyShift(lineFeedsDiff);
}
}
}
@SuppressWarnings("AssignmentToForLoopParameter")
@Override
public void replace(
@NotNull ArrangementEntryWrapper<E> newWrapper,
@NotNull ArrangementEntryWrapper<E> oldWrapper,
@Nullable ArrangementEntryWrapper<E> previous,
@NotNull Context<E> context) {
// Calculate blank lines before the arrangement.
int blankLinesBefore = 0;
TIntArrayList lineFeedOffsets = new TIntArrayList();
int oldStartLine = context.document.getLineNumber(oldWrapper.getStartOffset());
if (oldStartLine > 0) {
int lastLineFeed = context.document.getLineStartOffset(oldStartLine) - 1;
lineFeedOffsets.add(lastLineFeed);
for (int i = lastLineFeed - 1 - myParentShift; i >= 0; i--) {
i = CharArrayUtil.shiftBackward(myParentText, i, " \t");
if (myParentText.charAt(i) == '\n') {
blankLinesBefore++;
lineFeedOffsets.add(i + myParentShift);
} else {
break;
}
}
}
ArrangementEntryWrapper<E> parentWrapper = oldWrapper.getParent();
int desiredBlankLinesNumber =
context.rearranger.getBlankLines(
context.settings,
parentWrapper == null ? null : parentWrapper.getEntry(),
previous == null ? null : previous.getEntry(),
newWrapper.getEntry());
if (desiredBlankLinesNumber == blankLinesBefore && newWrapper.equals(oldWrapper)) {
return;
}
String newEntryText =
myParentText.substring(
newWrapper.getStartOffset() - myParentShift,
newWrapper.getEndOffset() - myParentShift);
int lineFeedsDiff = desiredBlankLinesNumber - blankLinesBefore;
if (lineFeedsDiff == 0 || desiredBlankLinesNumber < 0) {
context.addMoveInfo(
newWrapper.getStartOffset() - myParentShift,
newWrapper.getEndOffset() - myParentShift,
oldWrapper.getStartOffset());
context.document.replaceString(
oldWrapper.getStartOffset(), oldWrapper.getEndOffset(), newEntryText);
return;
}
if (lineFeedsDiff > 0) {
// Insert necessary number of blank lines.
StringBuilder buffer = new StringBuilder(StringUtil.repeat("\n", lineFeedsDiff));
buffer.append(newEntryText);
context.document.replaceString(
oldWrapper.getStartOffset(), oldWrapper.getEndOffset(), buffer);
} else {
// Cut exceeding blank lines.
int replacementStartOffset = lineFeedOffsets.get(-lineFeedsDiff) + 1;
context.document.replaceString(
replacementStartOffset, oldWrapper.getEndOffset(), newEntryText);
}
// Update wrapper ranges.
ArrangementEntryWrapper<E> parent = oldWrapper.getParent();
if (parent == null) {
return;
}
Deque<ArrangementEntryWrapper<E>> parents = new ArrayDeque<ArrangementEntryWrapper<E>>();
do {
parents.add(parent);
parent.setEndOffset(parent.getEndOffset() + lineFeedsDiff);
parent = parent.getParent();
} while (parent != null);
while (!parents.isEmpty()) {
for (ArrangementEntryWrapper<E> wrapper = parents.removeLast().getNext();
wrapper != null;
wrapper = wrapper.getNext()) {
wrapper.applyShift(lineFeedsDiff);
}
}
}