plasma-framework/declarativeimports/krunnermodel/runnermodel.cpp

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/*
Copyright 2011 Aaron Seigo <aseigo@kde.org>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
#include "runnermodel.h"
#include <QIcon>
#include <QAction>
#include <QTimer>
#include <KDebug>
#include <Plasma/RunnerManager>
RunnerModel::RunnerModel(QObject *parent)
: QAbstractListModel(parent),
m_manager(0),
m_startQueryTimer(new QTimer(this)),
m_runningChangedTimeout(new QTimer(this)),
m_running(false)
{
QHash<int, QByteArray> roles;
roles.insert(Qt::DisplayRole, "label");
roles.insert(Qt::DecorationRole, "icon");
roles.insert(Type, "type");
roles.insert(Relevance, "relevance");
roles.insert(Data, "data");
roles.insert(Id, "id");
roles.insert(SubText, "description");
roles.insert(Enabled, "enabled");
roles.insert(RunnerId, "runnerid");
roles.insert(RunnerName, "runnerName");
roles.insert(Actions, "actions");
setRoleNames(roles);
m_startQueryTimer->setSingleShot(true);
m_startQueryTimer->setInterval(10);
connect(m_startQueryTimer, SIGNAL(timeout()), this, SLOT(startQuery()));
//FIXME: HACK: some runners stay in a running but finished state, not possible to say if it's actually over
m_runningChangedTimeout->setSingleShot(true);
connect(m_runningChangedTimeout, SIGNAL(timeout()), this, SLOT(queryHasFinished()));
}
int RunnerModel::rowCount(const QModelIndex& index) const
{
return index.isValid() ? 0 : m_matches.count();
}
int RunnerModel::count() const
{
return m_matches.count();
}
QStringList RunnerModel::runners() const
{
return m_manager ? m_manager->allowedRunners() : m_pendingRunnersList;
}
void RunnerModel::setRunners(const QStringList &allowedRunners)
{
//use sets to ensure comparison is order-independent
if (allowedRunners.toSet() == runners().toSet()) {
return;
}
if (m_manager) {
m_manager->setAllowedRunners(allowedRunners);
//automagically enter single runner mode if there's only 1 allowed runner
m_manager->setSingleMode(allowedRunners.count() == 1);
} else {
m_pendingRunnersList = allowedRunners;
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kDebug() << "runners set" << m_pendingRunnersList.count();
}
// to trigger single runner fun!
if (allowedRunners.count() == 1) {
m_singleRunnerId = allowedRunners.first();
scheduleQuery(QString());
} else {
m_singleRunnerId.clear();
}
emit runnersChanged();
}
void RunnerModel::run(int index)
{
if (index >= 0 && index < m_matches.count()) {
m_manager->run(m_matches.at(index));
}
}
bool RunnerModel::isRunning() const
{
return m_running;
}
QVariant RunnerModel::data(const QModelIndex &index, int role) const
{
if (!index.isValid() || index.parent().isValid() ||
index.column() > 0 || index.row() < 0 || index.row() >= m_matches.count()) {
// index requested must be valid, but we have no child items!
//kDebug() << "invalid index requested";
return QVariant();
}
if (role == Qt::DisplayRole) {
return m_matches.at(index.row()).text();
} else if (role == Qt::DecorationRole) {
return m_matches.at(index.row()).icon();
} else if (role == Type) {
return m_matches.at(index.row()).type();
} else if (role == Relevance) {
return m_matches.at(index.row()).relevance();
} else if (role == Data) {
return m_matches.at(index.row()).data();
} else if (role == Id) {
return m_matches.at(index.row()).id();
} else if (role == SubText) {
return m_matches.at(index.row()).subtext();
} else if (role == Enabled) {
return m_matches.at(index.row()).isEnabled();
} else if (role == RunnerId) {
return m_matches.at(index.row()).runner()->id();
} else if (role == RunnerName) {
return m_matches.at(index.row()).runner()->name();
} else if (role == Actions) {
QVariantList actions;
Plasma::QueryMatch amatch = m_matches.at(index.row());
QList<QAction*> theactions = m_manager->actionsForMatch(amatch);
foreach(QAction* action, theactions) {
actions += qVariantFromValue<QObject*>(action);
}
return actions;
}
return QVariant();
}
QString RunnerModel::currentQuery() const
{
return m_manager ? m_manager->query() : QString();
}
void RunnerModel::scheduleQuery(const QString &query)
{
m_pendingQuery = query;
m_startQueryTimer->start();
}
void RunnerModel::startQuery()
{
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// avoid creating a manager just so we can run nothing
// however, if we have one pending runner, then we'll be in single query mode
// and a null query is a valid query
if (!m_manager && m_pendingRunnersList.count() != 1 && m_pendingQuery.isEmpty()) {
return;
}
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//kDebug() << "!!!!!!!!!!!!!" << m_pendingQuery << m_manager;
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if (createManager() || m_pendingQuery != m_manager->query()) {
//kDebug() << "running query" << m_pendingQuery << m_manager;
m_manager->launchQuery(m_pendingQuery, m_singleRunnerId);
emit queryChanged();
m_running = true;
emit runningChanged(true);
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}
}
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bool RunnerModel::createManager()
{
if (!m_manager) {
m_manager = new Plasma::RunnerManager(this);
connect(m_manager, SIGNAL(matchesChanged(QList<Plasma::QueryMatch>)),
this, SLOT(matchesChanged(QList<Plasma::QueryMatch>)));
connect(m_manager, SIGNAL(queryFinished()),
this, SLOT(queryHasFinished()));
if (!m_pendingRunnersList.isEmpty()) {
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setRunners(m_pendingRunnersList);
m_pendingRunnersList.clear();
}
//connect(m_manager, SIGNAL(queryFinished()), this, SLOT(queryFinished()));
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return true;
}
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return false;
}
void RunnerModel::matchesChanged(const QList<Plasma::QueryMatch> &matches)
{
//kDebug() << "got matches:" << matches.count();
bool fullReset = false;
int oldCount = m_matches.count();
int newCount = matches.count();
if (newCount > oldCount) {
// We received more matches than we had. If all common matches are the
// same, we can just append new matches instead of resetting the whole
// model
for (int row = 0; row < oldCount; ++row) {
if (!(m_matches.at(row) == matches.at(row))) {
fullReset = true;
break;
}
}
if (!fullReset) {
// Not a full reset, inserting rows
beginInsertRows(QModelIndex(), oldCount, newCount);
m_matches = matches;
endInsertRows();
emit countChanged();
}
} else {
fullReset = true;
}
if (fullReset) {
beginResetModel();
m_matches = matches;
endResetModel();
emit countChanged();
}
m_runningChangedTimeout->start(3000);
}
void RunnerModel::queryHasFinished()
{
m_running = false;
emit runningChanged(false);
}
#include "runnermodel.moc"