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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 SD_TOOLS_SLOT_STATE_LISTENER_HXX
#define SD_TOOLS_SLOT_STATE_LISTENER_HXX
#include "MutexOwner.hxx"
#include <com/sun/star/frame/XStatusListener.hpp>
#include <com/sun/star/frame/XFrame.hpp>
#include <com/sun/star/frame/FeatureStateEvent.hpp>
#include <com/sun/star/frame/XDispatchProvider.hpp>
#ifndef _COM_SUN_STAR_LANG_DISPOSEDEXCEPTIOIN_HPP_
#include <com/sun/star/lang/DisposedException.hpp>
#endif
#include <com/sun/star/lang/XComponent.hpp>
#include <cppuhelper/compbase1.hxx>
#include <tools/link.hxx>
namespace sd { namespace tools {
typedef cppu::WeakComponentImplHelper1<
::com::sun::star::frame::XStatusListener
> SlotStateListenerInterfaceBase;
/** Listen for state changes of slots. This class has been created in order
to be informed when the support for vertical writing changes but it can
be used to relay state changes of other slots as well.
*/
class SlotStateListener
: protected MutexOwner,
public SlotStateListenerInterfaceBase
{
public:
/** This convenience version of the constructor takes all parameters
that are necessary to observe a single slot. See descriptions of
the SetCallback(), ConnectToFrame(), and ObserveSlot() methods for
explanations about the parameters.
*/
SlotStateListener (
Link& rCallback,
const ::com::sun::star::uno::Reference<
::com::sun::star::frame::XDispatchProvider>& rxDispatchProvider,
const ::rtl::OUString& rSlotName);
/** The constructor de-registers all remaining listeners. Usually a prior
dispose() call should have done that already.
*/
virtual ~SlotStateListener (void);
/** Set the callback to the given value. Whenever one of the observed
slots changes its state this callback is informed about it.
Changing the callback does not release the listeners.
@throws DisposedException
*/
void SetCallback (const Link& rCallback);
/** Set the frame whose slots shall be observed. When an object of this
class is already observing slots of another frame then these
listeners are released first.
@throws DisposedException
*/
void ConnectToDispatchProvider (
const ::com::sun::star::uno::Reference<
::com::sun::star::frame::XDispatchProvider>& rxDispatchProvider);
/** Observe the slot specified by the given name. Note that
ConnectToFrame() has to have been called earlier.
@param rSlotName
The name of the slot to observe. An example is
".uno:VerticalTextState".
@throws DisposedException
*/
void ObserveSlot (const ::rtl::OUString& rSlotName);
//===== frame::XStatusListener ==========================================
/** Called by slot state change broadcasters. In turn the callback is
informed about the state chage.
@throws DisposedException
*/
virtual void SAL_CALL
statusChanged (
const ::com::sun::star::frame::FeatureStateEvent& rState)
throw (::com::sun::star::uno::RuntimeException);
//===== lang::XEventListener ============================================
virtual void SAL_CALL
disposing(const com::sun::star::lang::EventObject& rEvent)
throw(com::sun::star::uno::RuntimeException);
protected:
/** This method is called by the WeakComponentImplHelper base class in
reaction to a XComponent::dispose() call. It releases all currently
active listeners.
*/
virtual void SAL_CALL disposing (void);
private:
Link maCallback;
/** Remember the URLs that describe slots whose state changes we are
listening to.
*/
typedef ::std::vector<com::sun::star::util::URL> RegisteredURLList;
RegisteredURLList maRegisteredURLList;
::com::sun::star::uno::WeakReference<
::com::sun::star::frame::XDispatchProvider> mxDispatchProviderWeak;
/** Deregister all currently active state change listeners.
*/
void ReleaseListeners (void);
/** This method throws a DisposedException when the object has already been
disposed.
*/
void ThrowIfDisposed (void)
throw (::com::sun::star::lang::DisposedException);
/** Transform the given string into a URL object.
*/
::com::sun::star::util::URL MakeURL (const ::rtl::OUString& rSlotName) const;
/** Return an XDispatch object for the given URL.
*/
::com::sun::star::uno::Reference<com::sun::star::frame::XDispatch>
GetDispatch (
const ::com::sun::star::util::URL& rURL) const;
};
} } // end of namespace ::sd::tools
#endif
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