transmission/qt/FileTreeView.cc

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/*
* This file Copyright (C) 2009-2015 Mnemosyne LLC
*
* It may be used under the GNU GPL versions 2 or 3
* or any future license endorsed by Mnemosyne LLC.
*
*/
#include <algorithm>
#include <cassert>
#include <QHeaderView>
#include <QMenu>
#include <QQueue>
#include <QResizeEvent>
#include <QSortFilterProxyModel>
#include <libtransmission/transmission.h> // priorities
#include "FileTreeDelegate.h"
#include "FileTreeItem.h"
#include "FileTreeModel.h"
#include "FileTreeView.h"
#include "Formatter.h"
#include "Utils.h"
#define PRIORITY_KEY "priority"
FileTreeView::FileTreeView (QWidget * parent, bool isEditable):
QTreeView (parent),
myModel (new FileTreeModel (this, isEditable)),
myProxy (new QSortFilterProxyModel (this)),
myDelegate (new FileTreeDelegate (this))
{
myProxy->setSourceModel (myModel);
myProxy->setSortRole (FileTreeModel::SortRole);
myProxy->setSortCaseSensitivity (Qt::CaseInsensitive);
setModel (myProxy);
setItemDelegate (myDelegate);
sortByColumn (FileTreeModel::COL_NAME, Qt::AscendingOrder);
connect (this, SIGNAL(clicked(QModelIndex)),
this, SLOT(onClicked(QModelIndex)));
connect (myModel, SIGNAL(priorityChanged(QSet<int>, int)),
this, SIGNAL(priorityChanged(QSet<int>, int)));
connect (myModel, SIGNAL(wantedChanged(QSet<int>, bool)),
this, SIGNAL(wantedChanged(QSet<int>, bool)));
connect (myModel, SIGNAL(pathEdited(QString, QString)),
this, SIGNAL(pathEdited(QString, QString)));
connect (myModel, SIGNAL (openRequested (QString)),
this, SIGNAL (openRequested (QString)));
}
void
FileTreeView::onClicked (const QModelIndex& proxyIndex)
{
const QModelIndex modelIndex = myProxy->mapToSource (proxyIndex);
if (modelIndex.column () == FileTreeModel::COL_WANTED)
myModel->twiddleWanted (QModelIndexList () << modelIndex);
else if (modelIndex.column () == FileTreeModel::COL_PRIORITY)
myModel->twiddlePriority (QModelIndexList () << modelIndex);
}
void
FileTreeView::resizeEvent (QResizeEvent * event)
{
QTreeView::resizeEvent (event);
// this is kind of a hack to get the last four columns be the
// right size, and to have the filename column use whatever
// space is left over...
int left = event->size ().width () - 1;
for (int column = 0; column < FileTreeModel::NUM_COLUMNS; ++column)
{
if (column == FileTreeModel::COL_NAME)
continue;
int minWidth = 0;
QStringList itemTexts;
switch (column)
{
case FileTreeModel::COL_SIZE:
for (int s = Formatter::B; s <= Formatter::TB; ++s)
itemTexts << QLatin1String ("999.9 ") +
Formatter::unitStr (Formatter::MEM, static_cast<Formatter::Size> (s));
break;
case FileTreeModel::COL_PROGRESS:
itemTexts << QLatin1String (" 100% ");
break;
case FileTreeModel::COL_WANTED:
minWidth = 20;
break;
case FileTreeModel::COL_PRIORITY:
itemTexts << FileTreeItem::tr ("Low") << FileTreeItem::tr ("Normal") <<
FileTreeItem::tr ("High") << FileTreeItem::tr ("Mixed");
break;
}
int itemWidth = 0;
for (const QString& itemText: itemTexts)
itemWidth = std::max (itemWidth, Utils::measureViewItem (this, itemText));
const QString headerText = myModel->headerData (column, Qt::Horizontal).toString ();
int headerWidth = Utils::measureHeaderItem (this->header (), headerText);
const int width = std::max (minWidth, std::max (itemWidth, headerWidth));
setColumnWidth (column, width);
left -= width;
}
setColumnWidth (FileTreeModel::COL_NAME, std::max (left, 0));
}
void
FileTreeView::keyPressEvent (QKeyEvent * event)
{
if (state () != EditingState)
{
if (event->key () == Qt::Key_Space)
{
// handle using the keyboard to toggle the
// wanted/unwanted state or the file priority
const Qt::KeyboardModifiers modifiers = event->modifiers ();
if (modifiers == Qt::NoModifier)
{
myModel->twiddleWanted (selectedSourceRows ());
return;
}
if (modifiers == Qt::ShiftModifier)
{
myModel->twiddlePriority (selectedSourceRows ());
return;
}
}
}
QTreeView::keyPressEvent (event);
}
void
FileTreeView::mouseDoubleClickEvent (QMouseEvent * event)
{
const QModelIndex index = currentIndex ();
if (!index.isValid () || index.column () == FileTreeModel::COL_WANTED || index.column () == FileTreeModel::COL_PRIORITY)
return;
if (openSelectedItem ())
return;
QTreeView::mouseDoubleClickEvent (event);
}
void
FileTreeView::contextMenuEvent (QContextMenuEvent * event)
{
const QModelIndex rootIndex = myModel->index (0, 0);
if (!rootIndex.isValid ())
return;
if (myContextMenu == nullptr)
initContextMenu ();
myContextMenu->popup (event->globalPos ());
}
void
FileTreeView::update (const FileList& files, bool updateFields)
{
const bool modelWasEmpty = myProxy->rowCount () == 0;
for (const TorrentFile& file: files)
myModel->addFile (file.index, file.filename, file.wanted, file.priority, file.size, file.have, updateFields);
if (modelWasEmpty)
{
// expand up until the item with more than one expandable child
for (QModelIndex index = myProxy->index (0, 0); index.isValid ();)
{
const QModelIndex oldIndex = index;
expand (oldIndex);
index = QModelIndex ();
for (int i = 0, count = myProxy->rowCount (oldIndex); i < count; ++i)
{
const QModelIndex newIndex = myProxy->index (i, 0, oldIndex);
if (myProxy->rowCount (newIndex) == 0)
continue;
if (index.isValid ())
{
index = QModelIndex ();
break;
}
index = newIndex;
}
}
}
myProxy->sort (header ()->sortIndicatorSection (), header ()->sortIndicatorOrder ());
}
void
FileTreeView::clear ()
{
myModel->clear();
}
void
FileTreeView::setEditable (bool editable)
{
myModel->setEditable (editable);
}
bool
FileTreeView::edit (const QModelIndex& index, EditTrigger trigger, QEvent * event)
{
if (selectionModel ()->selectedRows ().size () != 1)
return false;
const QModelIndex nameIndex = index.sibling (index.row (), FileTreeModel::COL_NAME);
if (editTriggers ().testFlag (trigger))
selectionModel ()->setCurrentIndex (nameIndex, QItemSelectionModel::NoUpdate);
return QTreeView::edit (nameIndex, trigger, event);
}
void
FileTreeView::checkSelectedItems ()
{
myModel->setWanted (selectedSourceRows (), true);
}
void
FileTreeView::uncheckSelectedItems ()
{
myModel->setWanted (selectedSourceRows (), false);
}
void
FileTreeView::onlyCheckSelectedItems ()
{
const QModelIndex rootIndex = myModel->index (0, 0);
if (!rootIndex.isValid ())
return;
QModelIndexList wantedIndices = selectedSourceRows ();
myModel->setWanted (wantedIndices, true);
qSort (wantedIndices);
QSet<QModelIndex> wantedIndicesParents;
for (const QModelIndex& i: wantedIndices)
{
for (QModelIndex p = i.parent (); p.isValid (); p = p.parent ())
wantedIndicesParents.insert (p);
}
QQueue<QModelIndex> parentsQueue;
parentsQueue.enqueue (rootIndex);
QModelIndexList unwantedIndices;
while (!parentsQueue.isEmpty ())
{
const QModelIndex parentIndex = parentsQueue.dequeue ();
if (qBinaryFind (wantedIndices, parentIndex) != wantedIndices.end ())
continue;
for (int i = 0, count = myModel->rowCount (parentIndex); i < count; ++i)
{
const QModelIndex childIndex = parentIndex.child (i, 0);
const int childCheckState = childIndex.data (FileTreeModel::WantedRole).toInt ();
if (childCheckState == Qt::Unchecked || qBinaryFind (wantedIndices, childIndex) != wantedIndices.end ())
continue;
if (childCheckState == Qt::Checked && childIndex.data (FileTreeModel::FileIndexRole).toInt () >= 0)
{
unwantedIndices << childIndex;
}
else
{
if (!wantedIndicesParents.contains (childIndex))
unwantedIndices << childIndex;
else
parentsQueue.enqueue (childIndex);
}
}
}
myModel->setWanted (unwantedIndices, false);
}
void
FileTreeView::setSelectedItemsPriority ()
{
QAction * action = qobject_cast<QAction *> (sender ());
assert (action != nullptr);
myModel->setPriority (selectedSourceRows (), action->property (PRIORITY_KEY).toInt ());
}
bool
FileTreeView::openSelectedItem ()
{
return myModel->openFile (myProxy->mapToSource (currentIndex ()));
}
void
FileTreeView::renameSelectedItem ()
{
QTreeView::edit (currentIndex ());
}
void
FileTreeView::refreshContextMenuActionsSensitivity ()
{
assert (myContextMenu != nullptr);
const QModelIndexList selectedRows = selectionModel ()->selectedRows ();
const Qt::CheckState checkState = getCumulativeCheckState (selectedRows);
const bool haveSelection = !selectedRows.isEmpty ();
const bool haveSingleSelection = selectedRows.size() == 1;
const bool haveUnchecked = checkState == Qt::Unchecked || checkState == Qt::PartiallyChecked;
const bool haveChecked = checkState == Qt::Checked || checkState == Qt::PartiallyChecked;
myCheckSelectedAction->setEnabled (haveUnchecked);
myUncheckSelectedAction->setEnabled (haveChecked);
myOnlyCheckSelectedAction->setEnabled (haveSelection);
myPriorityMenu->setEnabled (haveSelection);
myOpenAction->setEnabled (haveSingleSelection &&
selectedRows.first ().data (FileTreeModel::FileIndexRole).toInt () >= 0 &&
selectedRows.first ().data (FileTreeModel::CompleteRole).toBool ());
myRenameAction->setEnabled (haveSingleSelection);
}
void
FileTreeView::initContextMenu ()
{
myContextMenu = new QMenu (this);
myCheckSelectedAction = myContextMenu->addAction (tr ("Check Selected"), this, SLOT (checkSelectedItems ()));
myUncheckSelectedAction = myContextMenu->addAction (tr ("Uncheck Selected"), this, SLOT (uncheckSelectedItems ()));
myOnlyCheckSelectedAction = myContextMenu->addAction (tr ("Only Check Selected"), this, SLOT (onlyCheckSelectedItems ()));
myContextMenu->addSeparator ();
myPriorityMenu = myContextMenu->addMenu (tr ("Priority"));
myHighPriorityAction = myPriorityMenu->addAction (FileTreeItem::tr ("High"), this, SLOT (setSelectedItemsPriority ()));
myNormalPriorityAction = myPriorityMenu->addAction (FileTreeItem::tr ("Normal"), this, SLOT (setSelectedItemsPriority ()));
myLowPriorityAction = myPriorityMenu->addAction (FileTreeItem::tr ("Low"), this, SLOT (setSelectedItemsPriority ()));
myHighPriorityAction->setProperty (PRIORITY_KEY, TR_PRI_HIGH);
myNormalPriorityAction->setProperty (PRIORITY_KEY, TR_PRI_NORMAL);
myLowPriorityAction->setProperty (PRIORITY_KEY, TR_PRI_LOW);
myContextMenu->addSeparator ();
myOpenAction = myContextMenu->addAction (tr ("Open"), this, SLOT (openSelectedItem ()));
myRenameAction = myContextMenu->addAction (tr ("Rename..."), this, SLOT (renameSelectedItem ()));
connect (myContextMenu, SIGNAL (aboutToShow ()), SLOT (refreshContextMenuActionsSensitivity ()));
}
QModelIndexList
FileTreeView::selectedSourceRows (int column) const
{
QModelIndexList indices;
for (const QModelIndex& i: selectionModel ()->selectedRows (column))
indices << myProxy->mapToSource (i);
return indices;
}
Qt::CheckState
FileTreeView::getCumulativeCheckState (const QModelIndexList& indices)
{
bool haveChecked = false, haveUnchecked = false;
for (const QModelIndex& i: indices)
{
switch (i.data (FileTreeModel::WantedRole).toInt ())
{
case Qt::Checked:
haveChecked = true;
break;
case Qt::Unchecked:
haveUnchecked = true;
break;
case Qt::PartiallyChecked:
return Qt::PartiallyChecked;
}
if (haveChecked && haveUnchecked)
return Qt::PartiallyChecked;
}
return haveChecked ? Qt::Checked : Qt::Unchecked;
}