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starting work on dataengines, datasource, datavisualizations, the plasma

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app and applets ... doesn't compile atm as it's a work in progress off
the design concepts. but dinner becons and i don't want to lose progress
in case my laptop degrades further.

svn path=/trunk/KDE/kdebase/workspace/plasma/lib/; revision=529282
This commit is contained in:
Aaron J. Seigo 2006-04-13 00:11:16 +00:00
parent 842830bc29
commit 2664e2d35b
5 changed files with 231 additions and 13 deletions
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44
applet.cpp
View File

@ -19,12 +19,15 @@
#include <QEvent>
#include <QList>
#include <QSize>
#include <QStringList>
#include <QTimer>
#include <kstandarddirs.h>
#include "applet.h"
namespace Plasma
{
@ -40,9 +43,13 @@ class Applet::Private
chain(appletChain)
{ }
// ~Private()
// {
// }
~Private()
{
foreach (const QString& engine, loadedEngines)
{
Interface::interface()->unloadDataEngine(engine);
}
}
int id;
KSharedConfig::Ptr globalConfig;
@ -50,6 +57,7 @@ class Applet::Private
KService::Ptr appletDescription;
QList<QObject*> watchedForFocus;
AppletChain::Ptr chain;
QStringList loadedEngines;
};
Applet::Applet(QWidget* parent,
@ -67,6 +75,19 @@ Applet::~Applet()
delete d;
}
KSharedConfig::Ptr Applet::appletConfig() const
{
if (!d->appletConfig)
{
QString file = locateLocal("appdata",
"applets/" + instanceName() + "rc",
true);
d->appletConfig = KSharedConfig::openConfig(file, false, true);
}
return d->appletConfig;
}
KSharedConfig::Ptr Applet::globalAppletConfig() const
{
if (!d->globalConfig)
@ -80,17 +101,20 @@ KSharedConfig::Ptr Applet::globalAppletConfig() const
return d->globalConfig;
}
KSharedConfig::Ptr Applet::appletConfig() const
bool Applet::loadDataEngine(const QString& name)
{
if (!d->appletConfig)
if (d->loadedEngines.indexOf(name) != -1)
{
QString file = locateLocal("appdata",
"applets/" + instanceName() + "rc",
true);
d->appletConfig = KSharedConfig::openConfig(file, false, true);
return true;
}
return d->appletConfig;
if (PlasmaAppInterface::self()->loadDataEngine(name))
{
d->loadedEngines.append(name);
return true;
}
return false;
}
const AppletChain::Ptr Applet::chain() const

19
applet.h
View File

@ -50,16 +50,29 @@ class KDE_EXPORT Applet : public QWidget
* named \<appletname\>rc in the user's local %KDE directory.
*
* For normal applets this config object will write to an instance
* specific config file nameed \<appletname\>\<instanceid\>rc
* specific config file named \<appletname\>\<instanceid\>rc
* in the user's local %KDE directory.
**/
KSharedConfig::Ptr globalAppletConfig() const;
KSharedConfig::Ptr appletConfig() const;
/**
* Returns a KConfig object to be shared by all applets of this type
* For unique applets, this will return the same config object as
* appletConfig()
*/
KSharedConfig::Ptr globalAppletConfig() const;
/**
* Ensures that the DataEngine named name is loaded and ready to be used
*
* @return returns true on success, false on failure
*/
bool loadDataEngine(const QString& name);
const AppletChain::Ptr chain() const;
void setChain(const AppletChain::Ptr);
/*
/**
* called when any of the geometry constraints have been updated
* this is always called prior to painting and should be used as an
* opportunity to layout the widget, calculate sizings, etc.

93
dataengine.h Normal file
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@ -0,0 +1,93 @@
/*
* Copyright (C) 2006 Aaron Seigo <aseigo@kde.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License version 2 as
* published by the Free Software Foundation
*
* This program 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 General Public License for more details
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef PLASMA_ENGINE_H
#define PLASMA_ENGINE_H
#include <QAtomic>
#include <QHash>
#include <QObject>
#include <QStringList>
namespace Plasma
{
class DataSource;
class DataVisualization;
class DataSource : public QObject
{
Q_OBJECT
public:
typedef QHash<QString, DataSource*> Dict;
typedef QHash<QString, QVariant> Data;
DataSource(QObject* parent);
virtual ~DataSource();
QString name();
signals:
void data(const DataSource::Data&);
private:
class Private;
Private* d;
};
class DataEngine : public QObject
{
Q_OBJECT
public:
typedef QHash<QString, DataEngine*> Dict;
DataEngine(QObject* parent);
virtual ~DataEngine();
virtual QStringList dataSources();
void connect(const QString& source, DataVisualization* visualization);
DataSource::Data query(const QString& source);
void ref();
void deref();
protected:
virtual void init();
virtual void cleanup();
virtual DataEngine* engine() = 0;
virtual
private:
QAtomic ref;
class Private;
Private* d;
};
} // Plasma namespace
#define K_EXPORT_PLASMA_ENGINE(libname, classname) \
K_EXPORT_COMPONENT_FACTORY( \
plasmaengine_##libname, \
KGenericFactory<classname>("libplasmaengine_" #libname))
#endif // multiple inclusion guard
#endif

48
datavisualization.h Normal file
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@ -0,0 +1,48 @@
/*
* Copyright (C) 2006 Aaron Seigo <aseigo@kde.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License version 2 as
* published by the Free Software Foundation
*
* This program 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 General Public License for more details
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef PLASMA_DATAVISUALIZATION_H
#define PLASMA_DATAVISUALIZATION_H
#include <QObject>
#include "dataengine.h"
namespace Plasma
{
// this will end up being multiple-inherited?
class DataVisualization : QObject
{
Q_OBJECT
public:
DataVisualization(QObject* parent);
virtual ~DataVisualization();
public slots:
void data(const DataSource::Data&) = 0;
private:
class Private;
Private* d;
};
} // Plasma namespace
#endif // multiple inclusion guard

40
interface.h Normal file
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@ -0,0 +1,40 @@
/*
* Copyright (C) 2006 Aaron Seigo <aseigo@kde.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Library General Public License version 2 as
* published by the Free Software Foundation
*
* This program 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 General Public License for more details
*
* You should have received a copy of the GNU Library General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef PLASMA_INTERFACE_H
#define PLASMA_INTERFACE_H
namespace Plasma
{
class Interface
{
public:
static Interface* interface() { return m_interface; }
bool loadDataEngine(const QString& name) = 0;
bool unloadDataEngine(const QString& name) = 0;
protected:
Interface() : m_interface(0) {}
static Interface* m_interface;
};
} // Plasma namespace
#endif // multiple inclusion guard