dragobjects.cpp
00001 /* 00002 This file is part of Akregator. 00003 00004 Copyright (C) 2005 Frank Osterfeld <frank.osterfeld@kdemail.net> 00005 00006 This program is free software; you can redistribute it and/or modify 00007 it under the terms of the GNU General Public License as published by 00008 the Free Software Foundation; either version 2 of the License, or 00009 (at your option) any later version. 00010 00011 This program is distributed in the hope that it will be useful, 00012 but WITHOUT ANY WARRANTY; without even the implied warranty of 00013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00014 GNU General Public License for more details. 00015 00016 You should have received a copy of the GNU General Public License 00017 along with this program; if not, write to the Free Software 00018 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. 00019 00020 As a special exception, permission is given to link this program 00021 with any edition of TQt, and distribute the resulting executable, 00022 without including the source code for TQt in the source distribution. 00023 */ 00024 00025 #include "dragobjects.h" 00026 #include "feed.h" 00027 00028 #include <tqcstring.h> 00029 00030 namespace Akregator { 00031 00032 class Article; 00033 00034 ArticleDrag::ArticleDrag(const TQValueList<Article>& articles, TQWidget* dragSource, const char* name) 00035 : KURLDrag(articleURLs(articles), dragSource, name), m_items(articlesToDragItems(articles)) 00036 {} 00037 00038 bool ArticleDrag::canDecode(const TQMimeSource* e) 00039 { 00040 return e->provides("akregator/articles"); 00041 } 00042 00043 bool ArticleDrag::decode(const TQMimeSource* e, TQValueList<ArticleDragItem>& articles) 00044 { 00045 articles.clear(); 00046 TQByteArray array = e->encodedData("akregator/articles"); 00047 00048 TQDataStream stream(array, IO_ReadOnly); 00049 00050 while (!stream.atEnd()) 00051 { 00052 ArticleDragItem i; 00053 stream >> i.feedURL; 00054 stream >> i.guid; 00055 articles.append(i); 00056 } 00057 00058 return true; 00059 } 00060 00061 const char* ArticleDrag::format(int i) const 00062 { 00063 if (i == 0) 00064 return "text/uri-list"; 00065 else if (i == 1) 00066 return "akregator/articles"; 00067 00068 return 0; 00069 } 00070 00071 TQByteArray ArticleDrag::encodedData(const char* mime) const 00072 { 00073 TQCString mimetype(mime); 00074 if (mimetype == "akregator/articles") 00075 { 00076 TQByteArray ba; 00077 TQDataStream stream(ba, IO_WriteOnly); 00078 00079 TQValueList<ArticleDragItem>::ConstIterator end = m_items.end(); 00080 for (TQValueList<ArticleDragItem>::ConstIterator it = m_items.begin(); it != end; ++it) 00081 { 00082 stream << (*it).feedURL; 00083 stream << (*it).guid; 00084 } 00085 return ba; 00086 } 00087 else 00088 { 00089 return KURLDrag::encodedData(mime); 00090 } 00091 } 00092 00093 TQValueList<ArticleDragItem> ArticleDrag::articlesToDragItems(const TQValueList<Article>& articles) 00094 { 00095 TQValueList<ArticleDragItem> items; 00096 00097 TQValueList<Article>::ConstIterator end(articles.end()); 00098 00099 for (TQValueList<Article>::ConstIterator it = articles.begin(); it != end; ++it) 00100 { 00101 ArticleDragItem i; 00102 i.feedURL = (*it).feed() ? (*it).feed()->xmlUrl() : ""; 00103 i.guid = (*it).guid(); 00104 items.append(i); 00105 } 00106 00107 return items; 00108 } 00109 00110 KURL::List ArticleDrag::articleURLs(const TQValueList<Article>& articles) 00111 { 00112 KURL::List urls; 00113 TQValueList<Article>::ConstIterator end(articles.end()); 00114 for (TQValueList<Article>::ConstIterator it = articles.begin(); it != end; ++it) 00115 urls.append((*it).link()); 00116 return urls; 00117 } 00118 00119 } // namespace Akregator