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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/Text.h"
#include "nsTextNode.h"
#include "mozAutoDocUpdate.h"
namespace mozilla::dom {
already_AddRefed<Text> Text::SplitText(uint32_t aOffset, ErrorResult& aRv) {
nsAutoString cutText;
const uint32_t length = TextLength();
if (aOffset > length) {
aRv.Throw(NS_ERROR_DOM_INDEX_SIZE_ERR);
return nullptr;
}
const uint32_t cutStartOffset = aOffset;
const uint32_t cutLength = length - aOffset;
SubstringData(cutStartOffset, cutLength, cutText, aRv);
if (aRv.Failed()) {
return nullptr;
}
Document* document = GetComposedDoc();
mozAutoDocUpdate updateBatch(document, true);
// Use Clone for creating the new node so that the new node is of same class
// as this node!
RefPtr<CharacterData> clone = CloneDataNode(mNodeInfo, false);
MOZ_ASSERT(clone && clone->IsText());
RefPtr<Text> newContent = static_cast<Text*>(clone.get());
// nsRange expects the CharacterDataChanged notification is followed
// by an insertion of |newContent|. If you change this code,
// make sure you make the appropriate changes in nsRange.
newContent->SetText(cutText, true); // XXX should be false?
CharacterDataChangeInfo::Details details = {
CharacterDataChangeInfo::Details::eSplit, newContent};
nsresult rv =
SetTextInternal(cutStartOffset, cutLength, nullptr, 0, true, &details);
if (NS_FAILED(rv)) {
aRv.Throw(rv);
return nullptr;
}
nsCOMPtr<nsINode> parent = GetParentNode();
if (parent) {
nsCOMPtr<nsIContent> beforeNode = GetNextSibling();
parent->InsertChildBefore(newContent, beforeNode, true, IgnoreErrors());
}
return newContent.forget();
}
static Text* FirstLogicallyAdjacentTextNode(Text* aNode) {
do {
nsIContent* sibling = aNode->GetPreviousSibling();
if (!sibling || !sibling->IsText()) {
return aNode;
}
aNode = static_cast<Text*>(sibling);
} while (1); // Must run out of previous siblings eventually!
}
static Text* LastLogicallyAdjacentTextNode(Text* aNode) {
do {
nsIContent* sibling = aNode->GetNextSibling();
if (!sibling || !sibling->IsText()) {
return aNode;
}
aNode = static_cast<Text*>(sibling);
} while (1); // Must run out of next siblings eventually!
}
void Text::GetWholeText(nsAString& aWholeText) {
nsIContent* parent = GetParent();
// Handle parent-less nodes
if (!parent) {
GetData(aWholeText);
return;
}
Text* first = FirstLogicallyAdjacentTextNode(this);
Text* last = LastLogicallyAdjacentTextNode(this);
aWholeText.Truncate();
nsAutoString tmp;
while (true) {
first->GetData(tmp);
aWholeText.Append(tmp);
if (first == last) {
break;
}
nsIContent* next = first->GetNextSibling();
MOZ_ASSERT(next && next->IsText(),
"How did we run out of text before hitting `last`?");
first = static_cast<Text*>(next);
}
}
/* static */
already_AddRefed<Text> Text::Constructor(const GlobalObject& aGlobal,
const nsAString& aData,
ErrorResult& aRv) {
nsCOMPtr<nsPIDOMWindowInner> window =
do_QueryInterface(aGlobal.GetAsSupports());
if (!window || !window->GetDoc()) {
aRv.Throw(NS_ERROR_FAILURE);
return nullptr;
}
return window->GetDoc()->CreateTextNode(aData);
}
bool Text::HasTextForTranslation() {
if (mText.Is2b()) {
// The fragment contains non-8bit characters which means there
// was at least one "interesting" character to trigger non-8bit.
return true;
}
if (HasFlag(NS_CACHED_TEXT_IS_ONLY_WHITESPACE) &&
HasFlag(NS_TEXT_IS_ONLY_WHITESPACE)) {
return false;
}
const char* cp = mText.Get1b();
const char* end = cp + mText.GetLength();
unsigned char ch;
for (; cp < end; cp++) {
ch = *cp;
// These are the characters that are letters
// in the first 256 UTF-8 codepoints.
if ((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') ||
(ch >= 192 && ch <= 214) || (ch >= 216 && ch <= 246) || (ch >= 248)) {
return true;
}
}
return false;
}
} // namespace mozilla::dom
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