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/**************************************************************
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*
*************************************************************/
#ifndef SDEXT_PRESENTER_TIMER_HXX
#define SDEXT_PRESENTER_TIMER_HXX
#include <com/sun/star/awt/XCallback.hpp>
#include <com/sun/star/awt/XRequestCallback.hpp>
#include <cppuhelper/basemutex.hxx>
#include <cppuhelper/compbase1.hxx>
#include <osl/mutex.hxx>
#include <osl/time.h>
#include <rtl/ref.hxx>
#include <sal/types.h>
#include <boost/enable_shared_from_this.hpp>
#include <boost/function.hpp>
#include <vector>
namespace css = ::com::sun::star;
namespace sdext { namespace presenter {
class PresenterClockInternalTimer;
/** The timer allows tasks to be scheduled for execution at a specified time
in the future.
*/
class PresenterTimer
{
public:
/** A task is called with the current time.
*/
typedef ::boost::function<void(const TimeValue&)> Task;
static const sal_Int32 NotAValidTaskId = 0;
static sal_Int32 ScheduleSingleTaskRelative (
const Task& rTask,
const sal_Int64 nDelay);
static sal_Int32 ScheduleSingleTaskAbsolute (
const Task& rTask,
const TimeValue& rDueTime);
/** Schedule a task to be executed repeatedly. The task is executed the
first time after nFirst nano-seconds (1000000000 corresponds to one
second). After that task is executed in intervalls that are
nIntervall ns long until CancelTask is called.
*/
static sal_Int32 ScheduleRepeatedTask (
const Task& rTask,
const sal_Int64 nFirst,
const sal_Int64 nIntervall);
static void CancelTask (const sal_Int32 nTaskId);
};
typedef cppu::WeakComponentImplHelper1<
css::awt::XCallback
> PresenterClockTimerInterfaceBase;
/** A timer that calls its listeners, typically clocks, every second to
update their current time value.
*/
class PresenterClockTimer
: protected ::cppu::BaseMutex,
public PresenterClockTimerInterfaceBase
{
public:
class Listener { public:
virtual void TimeHasChanged (const oslDateTime& rCurrentTime) = 0;
};
typedef ::boost::shared_ptr<Listener> SharedListener;
static ::rtl::Reference<PresenterClockTimer> Instance (
const css::uno::Reference<css::uno::XComponentContext>& rxContext);
void AddListener (const SharedListener& rListener);
void RemoveListener (const SharedListener& rListener);
static oslDateTime GetCurrentTime (void);
/** Return the difference between the two different times in
nanoseconds.
*/
static sal_Int64 GetTimeDifference (const oslDateTime& rNow, const oslDateTime& rThen);
// XCallback
virtual void SAL_CALL notify (const css::uno::Any& rUserData)
throw (css::uno::RuntimeException);
private:
static ::rtl::Reference<PresenterClockTimer> mpInstance;
::osl::Mutex maMutex;
typedef ::std::vector<SharedListener> ListenerContainer;
ListenerContainer maListeners;
oslDateTime maDateTime;
sal_Int32 mnTimerTaskId;
bool mbIsCallbackPending;
css::uno::Reference<css::awt::XRequestCallback> mxRequestCallback;
PresenterClockTimer (
const css::uno::Reference<css::uno::XComponentContext>& rxContext);
~PresenterClockTimer (void);
void CheckCurrentTime (const TimeValue& rCurrentTime);
};
} } // end of namespace ::sdext::presenter
#endif
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