// FIXME: We should merge this function with
// ApplyBlockElementCommand::formatSelection
void IndentOutdentCommand::outdentRegion(
const VisiblePosition& startOfSelection,
const VisiblePosition& endOfSelection,
EditingState* editingState) {
VisiblePosition endOfCurrentParagraph = endOfParagraph(startOfSelection);
VisiblePosition endOfLastParagraph = endOfParagraph(endOfSelection);
if (endOfCurrentParagraph.deepEquivalent() ==
endOfLastParagraph.deepEquivalent()) {
outdentParagraph(editingState);
return;
}
Position originalSelectionEnd = endingSelection().end();
Position endAfterSelection =
endOfParagraph(nextPositionOf(endOfLastParagraph)).deepEquivalent();
while (endOfCurrentParagraph.deepEquivalent() != endAfterSelection) {
PositionWithAffinity endOfNextParagraph =
endOfParagraph(nextPositionOf(endOfCurrentParagraph))
.toPositionWithAffinity();
if (endOfCurrentParagraph.deepEquivalent() ==
endOfLastParagraph.deepEquivalent()) {
SelectionInDOMTree::Builder builder;
if (originalSelectionEnd.isNotNull())
builder.collapse(originalSelectionEnd);
setEndingSelection(builder.build());
} else {
setEndingSelection(SelectionInDOMTree::Builder()
.collapse(endOfCurrentParagraph.deepEquivalent())
.build());
}
outdentParagraph(editingState);
if (editingState->isAborted())
return;
// outdentParagraph could move more than one paragraph if the paragraph
// is in a list item. As a result, endAfterSelection and endOfNextParagraph
// could refer to positions no longer in the document.
if (endAfterSelection.isNotNull() && !endAfterSelection.isConnected())
break;
document().updateStyleAndLayoutIgnorePendingStylesheets();
if (endOfNextParagraph.isNotNull() && !endOfNextParagraph.isConnected()) {
endOfCurrentParagraph = createVisiblePosition(endingSelection().end());
endOfNextParagraph = endOfParagraph(nextPositionOf(endOfCurrentParagraph))
.toPositionWithAffinity();
}
endOfCurrentParagraph = createVisiblePosition(endOfNextParagraph);
}
}
TEST_F(SelectionTest, caret) {
setBodyContent("<div id='sample'>abcdef</div>");
Element* sample = document().getElementById("sample");
Position position(Position(sample->firstChild(), 2));
SelectionInDOMTree::Builder builder;
builder.collapse(position);
const SelectionInDOMTree& selection = builder.build();
EXPECT_EQ(TextAffinity::Downstream, selection.affinity());
EXPECT_EQ(CharacterGranularity, selection.granularity());
EXPECT_FALSE(selection.hasTrailingWhitespace());
EXPECT_FALSE(selection.isDirectional());
EXPECT_FALSE(selection.isNone());
EXPECT_EQ(position, selection.base());
EXPECT_EQ(position, selection.extent());
}
void DOMSelection::collapseToStart(ExceptionState& exceptionState) {
if (!isAvailable())
return;
const VisibleSelection& selection = frame()->selection().selection();
if (selection.isNone()) {
exceptionState.throwDOMException(InvalidStateError,
"there is no selection.");
return;
}
// TODO(xiaochengh): The use of updateStyleAndLayoutIgnorePendingStylesheets
// needs to be audited. See http://crbug.com/590369 for more details.
// In the long term, we should change FrameSelection::setSelection to take a
// parameter that does not require clean layout, so that modifying selection
// no longer performs synchronous layout by itself.
frame()->document()->updateStyleAndLayoutIgnorePendingStylesheets();
SelectionInDOMTree::Builder builder;
builder.collapse(selection.start());
frame()->selection().setSelection(createVisibleSelection(builder.build()));
}