mirror of
https://github.com/RetroShare/RetroShare.git
synced 2025-02-11 04:18:34 -05:00
461 lines
12 KiB
C++
461 lines
12 KiB
C++
#include <QApplication>
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#include <QFontMetrics>
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#include <QModelIndex>
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#include "GxsForumModel.h"
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#define DEBUG_FORUMMODEL
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#define COLUMN_TITLE 0
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#define COLUMN_READ_STATUS 1
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#define COLUMN_DATE 2
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#define COLUMN_AUTHOR 3
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#define COLUMN_COUNT 4
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Q_DECLARE_METATYPE(RsMsgMetaData);
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std::ostream& operator<<(std::ostream& o, const QModelIndex& i);// defined elsewhere
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RsGxsForumModel::RsGxsForumModel(QObject *parent)
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: QAbstractItemModel(parent)
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{
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mPosts.resize(1); // adds a sentinel item
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// adds some fake posts to debug
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int N=5 ;
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mPosts.resize(N+1);
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for(int i=1;i<=N;++i)
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{
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mPosts[0].children.push_back(ForumModelIndex(i));
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mPosts[i].parent = ForumModelIndex(0);
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mPosts[i].prow = i-1;
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RsMsgMetaData meta;
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meta.mMsgName = std::string("message ") + QString::number(i).toStdString() ;
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mPosts[i].meta_versions.push_back(meta);
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}
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// add one child to last post
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mPosts.resize(N+2);
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mPosts[N].children.push_back(ForumModelIndex(N+1));
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mPosts[N+1].parent = ForumModelIndex(N);
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mPosts[N+1].prow = 0;
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RsMsgMetaData meta;
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meta.mMsgName = std::string("message ") + QString::number(N+1).toStdString() ;
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mPosts[N+1].meta_versions.push_back(meta);
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}
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int RsGxsForumModel::rowCount(const QModelIndex& parent) const
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{
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if(parent.column() > 0)
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return 0;
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if(mPosts.empty()) // security. Should never happen.
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return 0;
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if(!parent.isValid())
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return getChildrenCount(NULL);
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else
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return getChildrenCount(parent.internalPointer());
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}
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int RsGxsForumModel::columnCount(const QModelIndex &parent) const
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{
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return COLUMN_COUNT ;
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}
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bool RsGxsForumModel::hasChildren(const QModelIndex &parent) const
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{
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if(!parent.isValid())
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return true;
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void *ref = parent.internalPointer();
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uint32_t entry = 0;
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if(!convertRefPointerToTabEntry(ref,entry) || entry >= mPosts.size())
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{
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#ifdef DEBUG_FORUMMODEL
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std::cerr << "hasChildren-2(" << parent << ") : " << false << std::endl;
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#endif
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return false ;
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}
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#ifdef DEBUG_FORUMMODEL
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std::cerr << "hasChildren-3(" << parent << ") : " << !mPosts[entry].children.empty() << std::endl;
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#endif
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return !mPosts[entry].children.empty();
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}
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bool RsGxsForumModel::convertTabEntryToRefPointer(uint32_t entry,void *& ref)
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{
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// the pointer is formed the following way:
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//
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// [ 32 bits ]
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//
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// This means that the whole software has the following build-in limitation:
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// * 4 B simultaenous posts. Should be enough !
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ref = reinterpret_cast<void*>( (intptr_t)entry );
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return true;
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}
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bool RsGxsForumModel::convertRefPointerToTabEntry(void *ref,uint32_t& entry)
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{
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intptr_t val = (intptr_t)ref;
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if(val > (intptr_t)(~(uint32_t(0)))) // make sure the pointer is an int that fits in 32bits
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{
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std::cerr << "(EE) trying to make a ForumModelIndex out of a number that is larger than 2^32-1 !" << std::endl;
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return false ;
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}
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entry = uint32_t(val);
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return true;
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}
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QModelIndex RsGxsForumModel::index(int row, int column, const QModelIndex & parent) const
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{
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// if(!hasIndex(row,column,parent))
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if(row < 0 || column < 0 || column >= COLUMN_COUNT)
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return QModelIndex();
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void *ref = getChildRef(parent.internalPointer(),row);
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#ifdef DEBUG_FORUMMODEL
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std::cerr << "index-3(" << row << "," << column << " parent=" << parent << ") : " << createIndex(row,column,ref) << std::endl;
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#endif
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return createIndex(row,column,ref) ;
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}
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QModelIndex RsGxsForumModel::parent(const QModelIndex& index) const
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{
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if(!index.isValid())
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return QModelIndex();
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void *child_ref = index.internalPointer();
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int row=0;
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void *parent_ref = getParentRef(child_ref,row) ;
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if(parent_ref == NULL) // root
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return QModelIndex() ;
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return createIndex(row,0,parent_ref);
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}
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Qt::ItemFlags RsGxsForumModel::flags(const QModelIndex& index) const
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{
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if (!index.isValid())
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return 0;
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return QAbstractItemModel::flags(index);
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}
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void *RsGxsForumModel::getChildRef(void *ref,int row) const
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{
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ForumModelIndex entry ;
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if(!convertRefPointerToTabEntry(ref,entry) || entry >= mPosts.size())
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return NULL ;
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void *new_ref;
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if(row >= mPosts[entry].children.size())
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return NULL;
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convertTabEntryToRefPointer(mPosts[entry].children[row],new_ref);
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return new_ref;
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}
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void *RsGxsForumModel::getParentRef(void *ref,int& row) const
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{
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ForumModelIndex ref_entry;
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if(!convertRefPointerToTabEntry(ref,ref_entry) || ref_entry >= mPosts.size())
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return NULL ;
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ForumModelIndex parent_entry = mPosts[ref_entry].parent;
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if(parent_entry == 0) // top level index
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{
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row = 0;
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return NULL ;
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}
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else
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{
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void *parent_ref;
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convertTabEntryToRefPointer(parent_entry,parent_ref);
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row = mPosts[parent_entry].prow;
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return parent_ref;
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}
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}
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int RsGxsForumModel::getChildrenCount(void *ref) const
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{
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uint32_t entry = 0 ;
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if(!convertRefPointerToTabEntry(ref,entry) || entry >= mPosts.size())
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return 0 ;
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return mPosts[entry].children.size();
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}
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//bool RsGxsForumModel::hasIndex(int row,int column,const QModelIndex& parent) const
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//{
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// if(row < 0 || column < 0 || column >= COLUMN_COUNT)
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// return false;
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//
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// if(!parent.isValid())
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// return false;
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//
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// ForumModelIndex entry;
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//
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// convertRefPointerToTabEntry(parent.internalPointer(),entry);
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//
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// if(entry >= mPosts.size())
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// return false;
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//
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// if(row >= mPosts[entry].children.size())
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// return false;
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//
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// if(mPosts[entry].children[row] >= mPosts.size())
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// return false;
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//
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// return true;
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//}
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QVariant RsGxsForumModel::headerData(int section, Qt::Orientation orientation, int role) const
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{
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if(role != Qt::DisplayRole)
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return QVariant();
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switch(section)
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{
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default:
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case COLUMN_TITLE: return tr("Title");
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case COLUMN_READ_STATUS: return tr("Read Status");
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case COLUMN_DATE: return tr("Date");
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case COLUMN_AUTHOR: return tr("Author");
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}
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}
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QVariant RsGxsForumModel::data(const QModelIndex &index, int role) const
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{
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#ifdef DEBUG_FORUMMODEL
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std::cerr << "calling data(" << index << ") role=" << role << std::endl;
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#endif
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if(!index.isValid())
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return QVariant();
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switch(role)
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{
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case Qt::SizeHintRole: return sizeHintRole(index.column()) ;
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case Qt::TextAlignmentRole:
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case Qt::TextColorRole:
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case Qt::WhatsThisRole:
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case Qt::EditRole:
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case Qt::ToolTipRole:
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case Qt::StatusTipRole: return QVariant();
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default: break;
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}
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void *ref = (index.isValid())?index.internalPointer():NULL ;
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uint32_t entry = 0;
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#ifdef DEBUG_FORUMMODEL
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std::cerr << "data(" << index << ")" ;
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#endif
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if(!ref)
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{
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#ifdef DEBUG_FORUMMODEL
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std::cerr << " [empty]" << std::endl;
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#endif
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return QVariant() ;
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}
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if(!convertRefPointerToTabEntry(ref,entry) || entry >= mPosts.size())
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{
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#ifdef DEBUG_FORUMMODEL
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std::cerr << "Bad pointer: " << (void*)ref << std::endl;
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#endif
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return QVariant() ;
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}
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const RsMsgMetaData& meta(mPosts[entry].meta_versions[0]) ;
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#ifdef DEBUG_FORUMMODEL
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std::cerr << " [ok]" << std::endl;
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#endif
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switch(role)
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{
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case Qt::DisplayRole: return displayRole (meta,index.column()) ;
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case Qt::DecorationRole: return decorationRole(meta,index.column()) ;
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case Qt::UserRole: return userRole (meta,index.column()) ;
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default:
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return QVariant();
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}
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}
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QVariant RsGxsForumModel::sizeHintRole(int col) const
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{
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float factor = QFontMetricsF(QApplication::font()).height()/14.0f ;
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switch(col)
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{
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default:
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case COLUMN_TITLE: return QVariant( QSize(factor * 170, factor*14 ));
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case COLUMN_READ_STATUS: return QVariant( QSize(factor * 10 , factor*14 ));
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case COLUMN_DATE: return QVariant( QSize(factor * 75 , factor*14 ));
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case COLUMN_AUTHOR: return QVariant( QSize(factor * 75 , factor*14 ));
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}
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}
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QVariant RsGxsForumModel::displayRole(const RsMsgMetaData& meta,int col) const
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{
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switch(col)
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{
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case COLUMN_TITLE: return QVariant(QString::fromUtf8(meta.mMsgName.c_str()));
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case COLUMN_READ_STATUS: return QVariant(meta.mMsgStatus);
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case COLUMN_DATE: return QVariant(qulonglong(meta.mPublishTs));
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case COLUMN_AUTHOR: return QVariant(QString::fromStdString(meta.mAuthorId.toStdString()));
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default:
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return QVariant("[ TODO ]");
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}
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return QVariant("[ERROR]");
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}
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QVariant RsGxsForumModel::userRole(const RsMsgMetaData &meta, int col) const
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{
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#ifdef TODO
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switch(col)
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{
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case COLUMN_PROGRESS:
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{
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FileChunksInfo fcinfo;
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if (!rsFiles->FileDownloadChunksDetails(fileInfo.hash, fcinfo))
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return QVariant();
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FileProgressInfo pinfo;
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pinfo.cmap = fcinfo.chunks;
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pinfo.type = FileProgressInfo::DOWNLOAD_LINE;
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pinfo.progress = (fileInfo.size == 0) ? 0 : (fileInfo.transfered * 100.0 / fileInfo.size);
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pinfo.nb_chunks = pinfo.cmap._map.empty() ? 0 : fcinfo.chunks.size();
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for (uint32_t i = 0; i < fcinfo.chunks.size(); ++i)
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switch(fcinfo.chunks[i])
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{
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case FileChunksInfo::CHUNK_CHECKING: pinfo.chunks_in_checking.push_back(i);
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break ;
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case FileChunksInfo::CHUNK_ACTIVE: pinfo.chunks_in_progress.push_back(i);
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break ;
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case FileChunksInfo::CHUNK_DONE:
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case FileChunksInfo::CHUNK_OUTSTANDING:
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break ;
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}
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return QVariant::fromValue(pinfo);
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}
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case COLUMN_ID: return QVariant(QString::fromStdString(fileInfo.hash.toStdString()));
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default:
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return QVariant();
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}
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}
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#endif
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return QVariant();
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}
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QVariant RsGxsForumModel::decorationRole(const RsMsgMetaData& meta,int col) const
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{
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return QVariant();
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}
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void RsGxsForumModel::update_posts()
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{
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#ifdef TODO
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std::list<RsFileHash> downHashes;
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rsFiles->FileDownloads(downHashes);
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size_t old_size = mDownloads.size();
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mDownloads.resize(downHashes.size()) ;
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if(old_size < mDownloads.size())
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{
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beginInsertRows(QModelIndex(), old_size, mDownloads.size()-1);
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insertRows(old_size, mDownloads.size() - old_size);
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endInsertRows();
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}
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else if(mDownloads.size() < old_size)
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{
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beginRemoveRows(QModelIndex(), mDownloads.size(), old_size-1);
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removeRows(mDownloads.size(), old_size - mDownloads.size());
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endRemoveRows();
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}
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uint32_t i=0;
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for(auto it(downHashes.begin());it!=downHashes.end();++it,++i)
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{
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FileInfo fileInfo(mDownloads[i]); // we dont update the data itself but only a copy of it....
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int old_size = fileInfo.peers.size() ;
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rsFiles->FileDetails(*it, RS_FILE_HINTS_DOWNLOAD, fileInfo);
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int new_size = fileInfo.peers.size() ;
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if(old_size < new_size)
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{
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beginInsertRows(index(i,0), old_size, new_size-1);
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insertRows(old_size, new_size - old_size,index(i,0));
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#ifdef DEBUG_DOWNLOADLIST
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std::cerr << "called insert rows ( " << old_size << ", " << new_size - old_size << ",index(" << index(i,0)<< "))" << std::endl;
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#endif
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endInsertRows();
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}
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else if(new_size < old_size)
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{
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beginRemoveRows(index(i,0), new_size, old_size-1);
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removeRows(new_size, old_size - new_size,index(i,0));
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#ifdef DEBUG_DOWNLOADLIST
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std::cerr << "called remove rows ( " << old_size << ", " << old_size - new_size << ",index(" << index(i,0)<< "))" << std::endl;
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#endif
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endRemoveRows();
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}
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uint32_t old_status = mDownloads[i].downloadStatus ;
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mDownloads[i] = fileInfo ; // ... because insertRows() calls rowCount() which needs to be consistent with the *old* number of rows.
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if(fileInfo.downloadStatus == FT_STATE_DOWNLOADING || old_status != fileInfo.downloadStatus)
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{
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QModelIndex topLeft = createIndex(i,0), bottomRight = createIndex(i, COLUMN_COUNT-1);
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emit dataChanged(topLeft, bottomRight);
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}
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// This is apparently not needed.
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//
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// if(!mDownloads.empty())
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// {
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// QModelIndex topLeft = createIndex(0,0), bottomRight = createIndex(mDownloads.size()-1, COLUMN_COUNT-1);
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// emit dataChanged(topLeft, bottomRight);
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// mDownloads[i] = fileInfo ;
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// }
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}
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#endif
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}
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