316 lines
8.5 KiB
C++
316 lines
8.5 KiB
C++
/*
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* Copyright 2008 Aaron Seigo <aseigo@kde.org>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Library General Public License as
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* published by the Free Software Foundation; either version 2, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this program; if not, write to the
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* Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include "service.h"
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#include "private/service_p.h"
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#include <QFile>
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#include <QTimer>
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#include <KDebug>
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#include <KService>
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#include <KServiceTypeTrader>
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#include <KSharedConfig>
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#include <KStandardDirs>
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#include <KTemporaryFile>
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#include "configxml.h"
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#include "version.h"
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namespace Plasma
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{
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Service::Service(QObject *parent)
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: QObject(parent),
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d(new ServicePrivate(this))
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{
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registerOperationsScheme();
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}
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Service::Service(QObject *parent, const QVariantList &args)
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: QObject(parent),
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d(new ServicePrivate(this))
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{
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// remove those first item since those are managed by Service and subclasses shouldn't
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// need to worry about it. yes, it violates the constness of this var, but it lets us add
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// or remove items later while applets can just pretend that their args always start at 0
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QVariantList &mutableArgs = const_cast<QVariantList&>(args);
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if (!mutableArgs.isEmpty()) {
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setName(mutableArgs[0].toString());
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mutableArgs.removeFirst();
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}
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registerOperationsScheme();
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}
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Service::~Service()
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{
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delete d;
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}
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Service* Service::load(const QString &name, QObject *parent)
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{
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//TODO: scripting API support
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if (name.isEmpty()) {
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return new NullService(QString(), parent);
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}
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QString constraint = QString("[X-KDE-PluginInfo-Name] == '%1'").arg(name);
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KService::List offers = KServiceTypeTrader::self()->query("Plasma/Service", constraint);
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if (offers.isEmpty()) {
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kDebug() << "offers is empty for " << name;
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return new NullService(name, parent);
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}
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KService::Ptr offer = offers.first();
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QString error;
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QVariantList args;
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args << name;
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Service* service = 0;
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if (Plasma::isPluginVersionCompatible(KPluginLoader(*offer).pluginVersion())) {
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service = offer->createInstance<Plasma::Service>(parent, args, &error);
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}
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if (!service) {
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kDebug() << "Couldn't load Service \"" << name << "\"! reason given: " << error;
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return new NullService(name, parent);
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}
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return service;
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}
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void Service::setDestination(const QString &destination)
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{
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d->destination = destination;
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}
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QString Service::destination() const
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{
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return d->destination;
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}
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QStringList Service::operationNames() const
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{
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if (!d->config) {
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kDebug() << "No valid operations scheme has been registered";
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return QStringList();
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}
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return d->config->groupList();
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}
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KConfigGroup Service::operationDescription(const QString &operationName)
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{
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if (!d->config) {
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kDebug() << "No valid operations scheme has been registered";
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return KConfigGroup();
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}
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d->config->writeConfig();
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KConfigGroup params(d->config->config(), operationName);
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//kDebug() << "operation" << operationName << "requested, has keys" << params.keyList() << "from"
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// << d->config->config()->name();
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return params;
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}
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ServiceJob* Service::startOperationCall(const KConfigGroup &description, QObject *parent)
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{
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// TODO: nested groups?
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ServiceJob *job = 0;
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QString op = description.name();
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if (!d->config) {
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kDebug() << "No valid operations scheme has been registered";
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} else if (d->config->hasGroup(op)) {
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if (d->disabledOperations.contains(op)) {
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kDebug() << "Operation" << op << "is disabled";
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} else {
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QMap<QString, QVariant> params;
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foreach (const QString &key, description.keyList()) {
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KConfigSkeletonItem *item = d->config->findItem(op, key);
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if (item) {
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params.insert(key, description.readEntry(key, item->property()));
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}
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}
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job = createJob(description.name(), params);
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}
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} else {
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kDebug() << "Not a valid group!";
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}
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if (!job) {
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job = new NullServiceJob(destination(), op, this);
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}
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job->setParent(parent ? parent : this);
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connect(job, SIGNAL(finished(KJob*)), this, SLOT(jobFinished(KJob*)));
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QTimer::singleShot(0, job, SLOT(slotStart()));
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return job;
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}
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void Service::associateWidget(QWidget *widget, const QString &operation)
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{
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disassociateWidget(widget);
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d->associatedWidgets.insert(widget, operation);
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connect(widget, SIGNAL(destroyed(QObject*)), this, SLOT(associatedWidgetDestroyed(QObject*)));
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widget->setEnabled(!d->disabledOperations.contains(operation));
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}
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void Service::disassociateWidget(QWidget *widget)
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{
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disconnect(widget, SIGNAL(destroyed(QObject*)), this, SLOT(associatedWidgetDestroyed(QObject*)));
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d->associatedWidgets.remove(widget);
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}
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void Service::associateWidget(QGraphicsWidget *widget, const QString &operation)
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{
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disassociateWidget(widget);
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d->associatedGraphicsWidgets.insert(widget, operation);
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connect(widget, SIGNAL(destroyed(QObject*)), this, SLOT(associatedGraphicsWidgetDestroyed(QObject*)));
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widget->setEnabled(!d->disabledOperations.contains(operation));
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}
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void Service::disassociateWidget(QGraphicsWidget *widget)
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{
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disconnect(widget, SIGNAL(destroyed(QObject*)), this, SLOT(associatedGraphicsWidgetDestroyed(QObject*)));
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d->associatedGraphicsWidgets.remove(widget);
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}
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QString Service::name() const
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{
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return d->name;
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}
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void Service::setName(const QString &name)
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{
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d->name = name;
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// now reset the config, which may be based on our name
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delete d->config;
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d->config = 0;
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delete d->tempFile;
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d->tempFile = 0;
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registerOperationsScheme();
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}
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void Service::setOperationEnabled(const QString &operation, bool enable)
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{
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if (!d->config->hasGroup(operation)) {
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return;
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}
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if (enable) {
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d->disabledOperations.remove(operation);
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} else if (!d->disabledOperations.contains(operation)) {
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d->disabledOperations.insert(operation);
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}
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{
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QHashIterator<QWidget *, QString> it(d->associatedWidgets);
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while (it.hasNext()) {
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it.next();
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if (it.value() == operation) {
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it.key()->setEnabled(enable);
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}
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}
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}
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{
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QHashIterator<QGraphicsWidget *, QString> it(d->associatedGraphicsWidgets);
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while (it.hasNext()) {
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it.next();
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if (it.value() == operation) {
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it.key()->setEnabled(enable);
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}
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}
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}
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}
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bool Service::isOperationEnabled(const QString &operation) const
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{
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return d->config->hasGroup(operation) && !d->disabledOperations.contains(operation);
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}
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void Service::setOperationsScheme(QIODevice *xml)
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{
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delete d->config;
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delete d->tempFile;
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//FIXME: make KSharedConfig and KConfigSkeleton not braindamaged in 4.2 and then get rid of the
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// temp file object here
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d->tempFile = new KTemporaryFile;
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d->tempFile->open();
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KSharedConfigPtr c = KSharedConfig::openConfig(d->tempFile->fileName(), KConfig::NoGlobals);
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d->config = new ConfigXml(c, xml, this);
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emit operationsChanged();
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{
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QHashIterator<QWidget *, QString> it(d->associatedWidgets);
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while (it.hasNext()) {
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it.next();
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it.key()->setEnabled(d->config->hasGroup(it.value()));
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}
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}
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{
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QHashIterator<QGraphicsWidget *, QString> it(d->associatedGraphicsWidgets);
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while (it.hasNext()) {
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it.next();
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it.key()->setEnabled(d->config->hasGroup(it.value()));
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}
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}
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}
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void Service::registerOperationsScheme()
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{
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if (d->config) {
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// we've already done our job. let's go home.
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return;
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}
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if (d->name.isEmpty()) {
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kDebug() << "No name found";
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return;
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}
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QString path = KStandardDirs::locate("data", "plasma/services/" + d->name + ".operations");
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if (path.isEmpty()) {
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kDebug() << "Cannot find operations description";
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return;
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}
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QFile file(path);
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setOperationsScheme(&file);
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}
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} // namespace Plasma
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#include "service.moc"
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