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added missed sources
git-svn-id: http://svn.code.sf.net/p/retroshare/code/branches/v0.5.0@2895 b45a01b8-16f6-495d-af2f-9b41ad6348cc
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retroshare-gui/src/gui/chat/HandleRichText.cpp
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124
retroshare-gui/src/gui/chat/HandleRichText.cpp
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/****************************************************************
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* This file is distributed under the following license:
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*
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* Copyright (c) 2010, Thomas Kister
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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****************************************************************/
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#include "HandleRichText.h"
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namespace RsChat {
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void EmbedInHtmlImg::InitFromAwkwardHash(const QHash< QString, QString >& hash)
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{
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QString newRE;
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for(QHash<QString,QString>::const_iterator it = hash.begin(); it != hash.end(); ++it)
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foreach(QString smile, it.key().split("|")) {
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smileys.insert(smile, it.value());
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newRE += "(" + QRegExp::escape(smile) + ")|";
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}
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newRE.chop(1); // remove last |
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myRE.setPattern(newRE);
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}
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/**
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* Parses a DOM tree and replaces text by HTML tags.
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* The tree is traversed depth-first, but only through children of Element type
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* nodes. Any other kind of node is terminal.
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*
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* If the node is of type Text, its data is checked against the user-provided
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* regular expression. If there is a match, the text is cut in three parts: the
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* preceding part that will be inserted before, the part to be replaced, and the
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* following part which will be itself checked against the regular expression.
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*
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* The part to be replaced is sent to a user-provided functor that will create
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* the necessary embedding and return a new Element node to be inserted.
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*
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* @param[in] doc The whole DOM tree, necessary to create new nodes
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* @param[in,out] currentElement The current node (which is of type Element)
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* @param[in] embedInfos The regular expression and the type of embedding to use
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*/
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void embedHtml(QDomDocument& doc, QDomElement& currentElement, const EmbedInHtml& embedInfos)
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{
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if(embedInfos.myRE.pattern().length() == 0) // we'll get stuck with an empty regexp
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return;
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QDomNodeList children = currentElement.childNodes();
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for(uint index = 0; index < children.length(); index++) {
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QDomNode tempNode = children.item(index);
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if(tempNode.isElement()) {
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// child is an element, we skip it if it's an <a> tag
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QDomElement tempElement = tempNode.toElement();
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if(tempElement.tagName().toLower() != "head" && tempElement.tagName().toLower() != "a")
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embedHtml(doc, tempElement, embedInfos);
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}
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else if(tempNode.isText()) {
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// child is a text, we parse it
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QString tempText = tempNode.toText().data();
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if(embedInfos.myRE.indexIn(tempText) == -1)
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continue;
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// there is at least one link inside, we start replacing
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int currentPos = 0;
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int nextPos = 0;
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while((nextPos = embedInfos.myRE.indexIn(tempText, currentPos)) != -1) {
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// if nextPos == 0 it means the text begins by a link
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if(nextPos > 0) {
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QDomText textPart = doc.createTextNode(tempText.mid(currentPos, nextPos - currentPos));
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currentElement.insertBefore(textPart, tempNode);
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index++;
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}
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// inserted tag
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QDomElement insertedTag;
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switch(embedInfos.myType) {
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case Ahref: insertedTag = doc.createElement("a");
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insertedTag.setAttribute("href", embedInfos.myRE.cap(0));
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insertedTag.appendChild(doc.createTextNode(embedInfos.myRE.cap(0)));
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break;
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case Img: insertedTag = doc.createElement("img");
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{
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const EmbedInHtmlImg& embedImg = static_cast<const EmbedInHtmlImg&>(embedInfos);
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insertedTag.setAttribute("src", embedImg.smileys[embedInfos.myRE.cap(0)]);
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}
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break;
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}
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currentElement.insertBefore(insertedTag, tempNode);
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currentPos = nextPos + embedInfos.myRE.matchedLength();
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index++;
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}
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// text after the last link, only if there's one, don't touch the index
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// otherwise decrement the index because we're going to remove tempNode
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if(currentPos < tempText.length()) {
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QDomText textPart = doc.createTextNode(tempText.mid(currentPos));
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currentElement.insertBefore(textPart, tempNode);
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}
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else
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index--;
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currentElement.removeChild(tempNode);
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}
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}
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}
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} // namespace RsChat
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112
retroshare-gui/src/gui/chat/HandleRichText.h
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112
retroshare-gui/src/gui/chat/HandleRichText.h
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/****************************************************************
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* This file is distributed under the following license:
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*
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* Copyright (c) 2010, Thomas Kister
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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****************************************************************/
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/**
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* This file provides helper functions and functors for translating data from/to
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* rich text format and HTML. Its main goal is to facilitate decoding of chat
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* messages, particularly embedding special information into HTML tags.
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*/
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#ifndef HANDLE_RICH_TEXT_H_
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#define HANDLE_RICH_TEXT_H_
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#include <QRegExp>
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#include <QtXml>
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namespace RsChat {
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/**
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* The type of embedding we'd like to do
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*/
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enum EmbeddedType
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{
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Ahref, ///< into <a></a>
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Img, ///< into <img/>
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};
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/**
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* Base class for storing information about a given kind of embedding.
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*
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* Its only constructor is protected so it is impossible to instantiate it, and
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* at the same time derived classes have to provide a type.
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*/
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class EmbedInHtml
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{
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protected:
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EmbedInHtml(EmbeddedType newType) :
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myType(newType)
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{}
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public:
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const EmbeddedType myType;
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QRegExp myRE;
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};
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/**
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* This class is used to store information for embedding links into <a></a> tags.
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*/
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class EmbedInHtmlAhref : public EmbedInHtml
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{
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public:
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EmbedInHtmlAhref() :
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EmbedInHtml(Ahref)
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{
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myRE.setPattern("(\\bretroshare://[^\\s]*)|(\\bhttps?://[^\\s]*)|(\\bwww\\.[^\\s]*)");
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}
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};
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/**
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* This class is used to store information for embedding smileys into <img/> tags.
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*
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* By default the QRegExp the variables are empty, which means it must be
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* filled at runtime, typically when the smileys set is loaded. It can be
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* either done by hand or by using one of the helper methods available.
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*
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* Note: The QHash uses only *one* smiley per key (unlike soon-to-be-upgraded
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* code out there).
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*/
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class EmbedInHtmlImg : public EmbedInHtml
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{
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public:
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EmbedInHtmlImg() :
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EmbedInHtml(Img)
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{}
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void InitFromAwkwardHash(const QHash<QString,QString>& hash);
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QHash<QString,QString> smileys;
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};
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void embedHtml(QDomDocument& doc, QDomElement& currentElement, const EmbedInHtml& embedInfos);
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} // namespace RsChat
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#endif // HANDLE_RICH_TEXT_H_
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