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removed quadratic cost in forum thread fill

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This commit is contained in:
csoler 2017-01-14 17:29:37 +01:00
parent 730869591d
commit 25680d586c
1 changed files with 31 additions and 29 deletions
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60
retroshare-gui/src/gui/gxsforums/GxsForumThreadWidget.cpp
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@ -106,7 +106,11 @@ public:
virtual void paint(QPainter *painter, const QStyleOptionViewItem &option, const QModelIndex &index) const
{
Q_ASSERT(index.isValid());
if(!index.isValid())
{
std::cerr << "(EE) attempt to draw an invalid index." << std::endl;
return ;
}
QStyleOptionViewItemV4 opt = option;
initStyleOption(&opt, index);
@ -122,6 +126,8 @@ public:
// get pixmap
unsigned int warning_level = qvariant_cast<unsigned int>(index.data(Qt::DecorationRole));
std::cerr << "Drawing item with warning level " << warning_level << std::endl;
switch(warning_level)
{
case 0: icon = QIcon(IMAGE_VOID); break;
@ -1357,49 +1363,45 @@ void GxsForumThreadWidget::fillThreads(QList<QTreeWidgetItem *> &threadList, boo
int index = 0;
QTreeWidgetItem *threadItem;
QList<QTreeWidgetItem *>::iterator newThread;
// store new items in a map, so as to all
std::map<QString,QTreeWidgetItem*> newThreadMap ;
for(QList<QTreeWidgetItem *>::iterator newThread = threadList.begin (); newThread != threadList.end (); ++newThread)
newThreadMap[(*newThread)->data(COLUMN_THREAD_DATA, ROLE_THREAD_MSGID).toString()] = *newThread ;
// delete not existing
while (index < ui->threadTreeWidget->topLevelItemCount()) {
while (index < ui->threadTreeWidget->topLevelItemCount())
{
threadItem = ui->threadTreeWidget->topLevelItem(index);
// search existing new thread
int found = -1;
for (newThread = threadList.begin (); newThread != threadList.end (); ++newThread) {
if (threadItem->data(COLUMN_THREAD_DATA, ROLE_THREAD_MSGID) == (*newThread)->data (COLUMN_THREAD_DATA, ROLE_THREAD_MSGID)) {
// found it
found = index;
break;
}
}
if (found >= 0) {
++index;
} else {
if(newThreadMap.find(threadItem->data(COLUMN_THREAD_DATA, ROLE_THREAD_MSGID).toString()) == newThreadMap.end())
delete(ui->threadTreeWidget->takeTopLevelItem(index));
}
else
++index;
}
// iterate all new threads
for (newThread = threadList.begin (); newThread != threadList.end (); ++newThread) {
for (QList<QTreeWidgetItem *>::iterator newThread = threadList.begin (); newThread != threadList.end (); ++newThread) {
// search existing thread
int found = -1;
int count = ui->threadTreeWidget->topLevelItemCount();
for (index = 0; index < count; ++index) {
threadItem = ui->threadTreeWidget->topLevelItem(index);
if (threadItem->data(COLUMN_THREAD_DATA, ROLE_THREAD_MSGID) == (*newThread)->data(COLUMN_THREAD_DATA, ROLE_THREAD_MSGID)) {
// found it
found = index;
break;
}
}
QList<QTreeWidgetItem*> items_found = ui->threadTreeWidget->findItems((*newThread)->data(COLUMN_THREAD_DATA, ROLE_THREAD_MSGID).toString(),Qt::MatchExactly,COLUMN_THREAD_DATA);
QTreeWidgetItem *threadItem = NULL ;
if(!items_found.empty())
{
if(items_found.size() != 1)
std::cerr << "(EE) weird. Found multiple tree items for msg ID " << (*newThread)->data(COLUMN_THREAD_DATA, ROLE_THREAD_MSGID).toString().toStdString() << std::endl;
threadItem = *items_found.begin();
if (found >= 0) {
// set child data
copyItem(threadItem, *newThread);
// fill recursive
fillChildren(threadItem, *newThread, expandNewMessages, itemToExpand);
} else {
}
else
{
// add new thread
ui->threadTreeWidget->addTopLevelItem (*newThread);
threadItem = *newThread;