void InsertLineBreakCommand::doApply()
{
deleteSelection();
VisibleSelection selection = endingSelection();
if (!selection.isNonOrphanedCaretOrRange())
return;
VisiblePosition caret(selection.visibleStart());
// FIXME: If the node is hidden, we should still be able to insert text.
// For now, we return to avoid a crash. https://bugs.webkit.org/show_bug.cgi?id=40342
if (caret.isNull())
return;
Position pos(caret.deepEquivalent());
pos = positionAvoidingSpecialElementBoundary(pos);
pos = positionOutsideTabSpan(pos);
RefPtrWillBeRawPtr<Node> nodeToInsert = nullptr;
if (shouldUseBreakElement(pos))
nodeToInsert = HTMLBRElement::create(document());
else
nodeToInsert = document().createTextNode("\n");
// FIXME: Need to merge text nodes when inserting just after or before text.
if (isEndOfParagraph(caret) && !lineBreakExistsAtVisiblePosition(caret)) {
bool needExtraLineBreak = !isHTMLHRElement(*pos.anchorNode()) && !isHTMLTableElement(*pos.anchorNode());
insertNodeAt(nodeToInsert.get(), pos);
if (needExtraLineBreak)
insertNodeBefore(nodeToInsert->cloneNode(false), nodeToInsert);
VisiblePosition endingPosition = createVisiblePosition(positionBeforeNode(nodeToInsert.get()));
setEndingSelection(VisibleSelection(endingPosition, endingSelection().isDirectional()));
} else if (pos.computeEditingOffset() <= caretMinOffset(pos.anchorNode())) {
insertNodeAt(nodeToInsert.get(), pos);
// Insert an extra br or '\n' if the just inserted one collapsed.
if (!isStartOfParagraph(createVisiblePosition(positionBeforeNode(nodeToInsert.get()))))
insertNodeBefore(nodeToInsert->cloneNode(false).get(), nodeToInsert.get());
setEndingSelection(VisibleSelection(positionInParentAfterNode(*nodeToInsert), TextAffinity::Downstream, endingSelection().isDirectional()));
// If we're inserting after all of the rendered text in a text node, or into a non-text node,
// a simple insertion is sufficient.
} else if (!pos.anchorNode()->isTextNode() || pos.computeOffsetInContainerNode() >= caretMaxOffset(pos.anchorNode())) {
insertNodeAt(nodeToInsert.get(), pos);
setEndingSelection(VisibleSelection(positionInParentAfterNode(*nodeToInsert), TextAffinity::Downstream, endingSelection().isDirectional()));
} else if (pos.anchorNode()->isTextNode()) {
// Split a text node
Text* textNode = toText(pos.anchorNode());
splitTextNode(textNode, pos.computeOffsetInContainerNode());
insertNodeBefore(nodeToInsert, textNode);
Position endingPosition = firstPositionInNode(textNode);
// Handle whitespace that occurs after the split
document().updateLayoutIgnorePendingStylesheets();
// TODO(yosin) |isRenderedCharacter()| should be removed, and we should
// use |VisiblePosition::characterAfter()|.
if (!isRenderedCharacter(endingPosition)) {
Position positionBeforeTextNode(positionInParentBeforeNode(*textNode));
// Clear out all whitespace and insert one non-breaking space
deleteInsignificantTextDownstream(endingPosition);
ASSERT(!textNode->layoutObject() || textNode->layoutObject()->style()->collapseWhiteSpace());
// Deleting insignificant whitespace will remove textNode if it contains nothing but insignificant whitespace.
if (textNode->inDocument()) {
insertTextIntoNode(textNode, 0, nonBreakingSpaceString());
} else {
RefPtrWillBeRawPtr<Text> nbspNode = document().createTextNode(nonBreakingSpaceString());
insertNodeAt(nbspNode.get(), positionBeforeTextNode);
endingPosition = firstPositionInNode(nbspNode.get());
}
}
setEndingSelection(VisibleSelection(endingPosition, TextAffinity::Downstream, endingSelection().isDirectional()));
}
// Handle the case where there is a typing style.
RefPtrWillBeRawPtr<EditingStyle> typingStyle = document().frame()->selection().typingStyle();
if (typingStyle && !typingStyle->isEmpty()) {
// Apply the typing style to the inserted line break, so that if the selection
// leaves and then comes back, new input will have the right style.
// FIXME: We shouldn't always apply the typing style to the line break here,
// see <rdar://problem/5794462>.
applyStyle(typingStyle.get(), firstPositionInOrBeforeNode(nodeToInsert.get()), lastPositionInOrAfterNode(nodeToInsert.get()));
// Even though this applyStyle operates on a Range, it still sets an endingSelection().
// It tries to set a VisibleSelection around the content it operated on. So, that VisibleSelection
// will either (a) select the line break we inserted, or it will (b) be a caret just
// before the line break (if the line break is at the end of a block it isn't selectable).
// So, this next call sets the endingSelection() to a caret just after the line break
// that we inserted, or just before it if it's at the end of a block.
setEndingSelection(endingSelection().visibleEnd());
}
rebalanceWhitespace();
}
void InsertLineBreakCommand::doApply(EditingState* editingState) {
deleteSelection(editingState);
if (editingState->isAborted())
return;
document().updateStyleAndLayoutIgnorePendingStylesheets();
VisibleSelection selection = endingSelection();
if (!selection.isNonOrphanedCaretOrRange())
return;
// TODO(xiaochengh): Stop storing VisiblePositions through mutations.
VisiblePosition caret(selection.visibleStart());
// FIXME: If the node is hidden, we should still be able to insert text. For
// now, we return to avoid a crash.
// https://bugs.webkit.org/show_bug.cgi?id=40342
if (caret.isNull())
return;
Position pos(caret.deepEquivalent());
pos = positionAvoidingSpecialElementBoundary(pos, editingState);
if (editingState->isAborted())
return;
pos = positionOutsideTabSpan(pos);
Node* nodeToInsert = nullptr;
if (shouldUseBreakElement(pos))
nodeToInsert = HTMLBRElement::create(document());
else
nodeToInsert = document().createTextNode("\n");
document().updateStyleAndLayoutIgnorePendingStylesheets();
// FIXME: Need to merge text nodes when inserting just after or before text.
if (isEndOfParagraph(createVisiblePosition(caret.toPositionWithAffinity())) &&
!lineBreakExistsAtVisiblePosition(caret)) {
bool needExtraLineBreak = !isHTMLHRElement(*pos.anchorNode()) &&
!isHTMLTableElement(*pos.anchorNode());
insertNodeAt(nodeToInsert, pos, editingState);
if (editingState->isAborted())
return;
if (needExtraLineBreak) {
Node* extraNode;
// TODO(tkent): Can we remove HTMLTextFormControlElement dependency?
if (HTMLTextFormControlElement* textControl =
enclosingTextFormControl(nodeToInsert)) {
extraNode = textControl->createPlaceholderBreakElement();
// The placeholder BR should be the last child. There might be
// empty Text nodes at |pos|.
appendNode(extraNode, nodeToInsert->parentNode(), editingState);
} else {
extraNode = nodeToInsert->cloneNode(false);
insertNodeAfter(extraNode, nodeToInsert, editingState);
}
if (editingState->isAborted())
return;
nodeToInsert = extraNode;
}
setEndingSelection(SelectionInDOMTree::Builder()
.collapse(Position::beforeNode(nodeToInsert))
.setIsDirectional(endingSelection().isDirectional())
.build());
} else if (pos.computeEditingOffset() <= caretMinOffset(pos.anchorNode())) {
insertNodeAt(nodeToInsert, pos, editingState);
if (editingState->isAborted())
return;
document().updateStyleAndLayoutIgnorePendingStylesheets();
// Insert an extra br or '\n' if the just inserted one collapsed.
if (!isStartOfParagraph(VisiblePosition::beforeNode(nodeToInsert))) {
insertNodeBefore(nodeToInsert->cloneNode(false), nodeToInsert,
editingState);
if (editingState->isAborted())
return;
}
setEndingSelection(SelectionInDOMTree::Builder()
.collapse(Position::inParentAfterNode(*nodeToInsert))
.setIsDirectional(endingSelection().isDirectional())
.build());
// If we're inserting after all of the rendered text in a text node, or into
// a non-text node, a simple insertion is sufficient.
} else if (!pos.anchorNode()->isTextNode() ||
pos.computeOffsetInContainerNode() >=
caretMaxOffset(pos.anchorNode())) {
insertNodeAt(nodeToInsert, pos, editingState);
if (editingState->isAborted())
return;
setEndingSelection(SelectionInDOMTree::Builder()
.collapse(Position::inParentAfterNode(*nodeToInsert))
.setIsDirectional(endingSelection().isDirectional())
.build());
} else if (pos.anchorNode()->isTextNode()) {
// Split a text node
Text* textNode = toText(pos.anchorNode());
splitTextNode(textNode, pos.computeOffsetInContainerNode());
insertNodeBefore(nodeToInsert, textNode, editingState);
if (editingState->isAborted())
return;
Position endingPosition = Position::firstPositionInNode(textNode);
// Handle whitespace that occurs after the split
document().updateStyleAndLayoutIgnorePendingStylesheets();
// TODO(yosin) |isRenderedCharacter()| should be removed, and we should
// use |VisiblePosition::characterAfter()|.
if (!isRenderedCharacter(endingPosition)) {
Position positionBeforeTextNode(Position::inParentBeforeNode(*textNode));
// Clear out all whitespace and insert one non-breaking space
deleteInsignificantTextDownstream(endingPosition);
DCHECK(!textNode->layoutObject() ||
textNode->layoutObject()->style()->collapseWhiteSpace());
// Deleting insignificant whitespace will remove textNode if it contains
// nothing but insignificant whitespace.
if (textNode->isConnected()) {
insertTextIntoNode(textNode, 0, nonBreakingSpaceString());
} else {
Text* nbspNode = document().createTextNode(nonBreakingSpaceString());
insertNodeAt(nbspNode, positionBeforeTextNode, editingState);
if (editingState->isAborted())
return;
endingPosition = Position::firstPositionInNode(nbspNode);
}
}
setEndingSelection(SelectionInDOMTree::Builder()
.collapse(endingPosition)
.setIsDirectional(endingSelection().isDirectional())
.build());
}
// Handle the case where there is a typing style.
EditingStyle* typingStyle = document().frame()->selection().typingStyle();
if (typingStyle && !typingStyle->isEmpty()) {
// Apply the typing style to the inserted line break, so that if the
// selection leaves and then comes back, new input will have the right
// style.
// FIXME: We shouldn't always apply the typing style to the line break here,
// see <rdar://problem/5794462>.
applyStyle(typingStyle, firstPositionInOrBeforeNode(nodeToInsert),
lastPositionInOrAfterNode(nodeToInsert), editingState);
if (editingState->isAborted())
return;
// Even though this applyStyle operates on a Range, it still sets an
// endingSelection(). It tries to set a VisibleSelection around the content
// it operated on. So, that VisibleSelection will either
// (a) select the line break we inserted, or it will
// (b) be a caret just before the line break (if the line break is at the
// end of a block it isn't selectable).
// So, this next call sets the endingSelection() to a caret just after the
// line break that we inserted, or just before it if it's at the end of a
// block.
setEndingSelection(SelectionInDOMTree::Builder()
.collapse(endingSelection().end())
.build());
}
rebalanceWhitespace();
}
