QDomText EmoticonExpander::insertEmoticon(QDomText textNode, const Emoticon &emoticon, int index) const
{
int emoticonLength = emoticon.triggerText().length();
QDomText afterEmoticon = textNode.splitText(index + emoticonLength);
textNode.setNodeValue(textNode.nodeValue().mid(0, index));
QDomElement emoticonElement = textNode.ownerDocument().createElement("img");
emoticonElement.setAttribute("emoticon", emoticon.triggerText());
emoticonElement.setAttribute("title", emoticon.triggerText());
emoticonElement.setAttribute("alt", emoticon.triggerText());
emoticonElement.setAttribute("src", "file:///" + m_pathProvider->emoticonPath(emoticon));
textNode.parentNode().insertBefore(emoticonElement, afterEmoticon);
return afterEmoticon;
}
void EmoticonPrefixTreeBuilder::addEmoticon(const Emoticon &emoticon)
{
Q_ASSERT(Root);
QString text = emoticon.triggerText().toLower();
int length = text.length();
EmoticonPrefixTree *node = Root.data();
for (int i = 0; i < length; i++)
{
QChar c = extractLetter(text.at(i));
EmoticonPrefixTree *child = node->child(c);
if (!child)
child = node->createChild(c);
node = child;
}
if (node->nodeEmoticon().isNull())
node->setNodeEmoticon(emoticon);
}
QDomText EmoticonExpander::expandFirstEmoticon(QDomText textNode) const
{
QString text = textNode.nodeValue().toLower();
int textLength = text.length();
if (0 == textLength)
return QDomText();
int currentEmoticonStart = -1;
Emoticon currentEmoticon;
EmoticonWalker walker(m_tree);
for (int i = 0; i < textLength; i++)
{
Emoticon emoticon = walker.matchEmoticon(text.at(i), (i < textLength - 1) && text.at(i + 1).isLetter());
if (emoticon.isNull())
continue;
// TODO: remove this dependency
int emoticonStart = i - emoticon.triggerText().length() + 1;
if (currentEmoticon.isNull() || currentEmoticonStart >= emoticonStart)
{
currentEmoticon = emoticon;
currentEmoticonStart = emoticonStart;
continue;
}
return insertEmoticon(textNode, currentEmoticon, currentEmoticonStart);
}
if (!currentEmoticon.isNull())
insertEmoticon(textNode, currentEmoticon, currentEmoticonStart);
return QDomText();
}