/**************************************************************
 * 
 * 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.
 * 
 *************************************************************/


// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_slideshow.hxx"

// must be first
#include <canvas/debug.hxx>
#include <tools/diagnose_ex.h>
#include <canvas/verbosetrace.hxx>

#include <com/sun/star/drawing/XShape.hpp>
#include <com/sun/star/animations/XAnimationNode.hpp>
#include <com/sun/star/animations/Timing.hpp>
#include <com/sun/star/animations/EventTrigger.hpp>
#include <com/sun/star/animations/Event.hpp>

#include "shape.hxx"
#include "subsettableshapemanager.hxx"
#include "usereventqueue.hxx"
#include "slideshowcontext.hxx"
#include "delayevent.hxx"

namespace slideshow {
namespace internal {

using namespace com::sun::star;

EventSharedPtr generateEvent(
    uno::Any const& rEventDescription,
    Delay::FunctorT const& rFunctor,
    SlideShowContext const& rContext,
    double nAdditionalDelay )
{
    EventSharedPtr pEvent;
    
    if (! rEventDescription.hasValue())
        return pEvent;
    
    animations::Timing eTiming;
    animations::Event aEvent;
    uno::Sequence<uno::Any> aSequence;
    double nDelay1 = 0;
    
    if (rEventDescription >>= eTiming) {
        switch (eTiming) {
        case animations::Timing_INDEFINITE:
            break; // don't schedule no event
        case animations::Timing_MEDIA:
            OSL_ENSURE( false, "MEDIA timing not yet implemented!" );
            break;
        default:
            ENSURE_OR_THROW( false, "unexpected case!" );
        }
    }
    else if (rEventDescription >>= aEvent) {
        
        // try to extract additional event delay
        double nDelay2 = 0.0;
        if (aEvent.Offset.hasValue() && !(aEvent.Offset >>= nDelay2)) {
            OSL_ENSURE( false, "offset values apart from DOUBLE not "
                        "recognized in animations::Event!" );
        }
        
        // common vars used inside switch
        uno::Reference<animations::XAnimationNode> xNode;
        uno::Reference<drawing::XShape> xShape;
        ShapeSharedPtr pShape;
        
        // TODO(F1): Respect aEvent.Repeat value
        
        switch (aEvent.Trigger) {
        default:
            ENSURE_OR_THROW( false, "unexpected event trigger!" );
        case animations::EventTrigger::NONE:
            // no event at all
            break;
        case animations::EventTrigger::ON_BEGIN:
            OSL_ENSURE( false, "event trigger ON_BEGIN not yet implemented!" );
            break;
        case animations::EventTrigger::ON_END:
            OSL_ENSURE( false, "event trigger ON_END not yet implemented!" );
            break;
        case animations::EventTrigger::BEGIN_EVENT:
            // try to extract XAnimationNode event source
            if (aEvent.Source >>= xNode) {
                pEvent = makeDelay( rFunctor,
                                    nDelay2 + nAdditionalDelay,
                                    "generateEvent, BEGIN_EVENT");
                rContext.mrUserEventQueue.registerAnimationStartEvent( 
                    pEvent, xNode );
            }
            else {
                OSL_ENSURE(false, "could not extract source XAnimationNode "
                           "for BEGIN_EVENT!" );
            }
            break;
        case animations::EventTrigger::END_EVENT:
            // try to extract XAnimationNode event source
            if (aEvent.Source >>= xNode) {
                pEvent = makeDelay( rFunctor,
                                    nDelay2 + nAdditionalDelay,
                                    "generateEvent, END_EVENT");
                rContext.mrUserEventQueue.registerAnimationEndEvent( 
                    pEvent, xNode );
            }
            else {
                OSL_ENSURE( false, "could not extract source XAnimationNode "
                            "for END_EVENT!" );
            }
            break;
        case animations::EventTrigger::ON_CLICK:
            // try to extract XShape event source
            if ((aEvent.Source >>= xShape) &&
                (pShape = rContext.mpSubsettableShapeManager->lookupShape(xShape)).get())
            {
                pEvent = makeDelay( rFunctor,
                                    nDelay2 + nAdditionalDelay,
                                    "generateEvent, ON_CLICK");
                rContext.mrUserEventQueue.registerShapeClickEvent(
                    pEvent, pShape );
            }
            else {
                OSL_ENSURE( false, "could not extract source XAnimationNode "
                            "for ON_CLICK!" );
            }
            break;
        case animations::EventTrigger::ON_DBL_CLICK:
            // try to extract XShape event source
            if ((aEvent.Source >>= xShape) &&
                (pShape = rContext.mpSubsettableShapeManager->lookupShape(xShape)).get())
            {
                pEvent = makeDelay( rFunctor,
                                    nDelay2 + nAdditionalDelay,
                                    "generateEvent, ON_DBL_CLICK");
                rContext.mrUserEventQueue.registerShapeDoubleClickEvent( 
                    pEvent, pShape );
            }
            else {
                OSL_ENSURE( false, "could not extract source XAnimationNode "
                            "for ON_DBL_CLICK!" );
            }
            break;    
        case animations::EventTrigger::ON_MOUSE_ENTER:
            // try to extract XShape event source
            if ((aEvent.Source >>= xShape) &&
                (pShape = rContext.mpSubsettableShapeManager->lookupShape(xShape)).get())
            {
                pEvent = makeDelay( rFunctor,
                                    nDelay2 + nAdditionalDelay,
                                    "generateEvent, ON_MOUSE_ENTER");
                rContext.mrUserEventQueue.registerMouseEnterEvent( 
                    pEvent, pShape );
            }
            else {
                OSL_ENSURE( false, "could not extract source XAnimationNode "
                            "for ON_MOUSE_ENTER!" );
            }
            break;
        case animations::EventTrigger::ON_MOUSE_LEAVE:
            // try to extract XShape event source
            if ((aEvent.Source >>= xShape) &&
                (pShape = rContext.mpSubsettableShapeManager->lookupShape(xShape)).get())
            {
                pEvent = makeDelay( rFunctor,
                                    nDelay2 + nAdditionalDelay,
                                    "generateEvent, ON_MOUSE_LEAVE");
                rContext.mrUserEventQueue.registerMouseLeaveEvent( 
                    pEvent, pShape );
            }
            else {
                OSL_ENSURE( false, "could not extract source XAnimationNode "
                            "for ON_MOUSE_LEAVE!" );
            }
            break;
        case animations::EventTrigger::ON_PREV:
            OSL_ENSURE( false, "event trigger ON_PREV not yet implemented, "
                        "mapped to ON_NEXT!" );
            // FALLTHROUGH intended
        case animations::EventTrigger::ON_NEXT:
            pEvent = makeDelay( rFunctor,
                                nDelay2 + nAdditionalDelay,
                                "generateEvent, ON_NEXT");
            rContext.mrUserEventQueue.registerNextEffectEvent( pEvent );
            break;
        case animations::EventTrigger::ON_STOP_AUDIO:
            // try to extract XAnimationNode event source
            if (aEvent.Source >>= xNode) {
                pEvent = makeDelay( rFunctor,
                                    nDelay2 + nAdditionalDelay,
                                    "generateEvent, ON_STOP_AUDIO");
                rContext.mrUserEventQueue.registerAudioStoppedEvent(
                    pEvent, xNode );
            }
            else {
                OSL_ENSURE( false, "could not extract source XAnimationNode "
                            "for ON_STOP_AUDIO!" );
            }
            break;
        case animations::EventTrigger::REPEAT:
            OSL_ENSURE( false, "event trigger REPEAT not yet implemented!" );
            break;
        }
    }
    else if (rEventDescription >>= aSequence) {
        OSL_ENSURE( false, "sequence of timing primitives "
                    "not yet implemented!" );
    }
    else if (rEventDescription >>= nDelay1) {
        pEvent = makeDelay( rFunctor,
                            nDelay1 + nAdditionalDelay,
                            "generateEvent with delay");
        // schedule delay event
        rContext.mrEventQueue.addEvent( pEvent );
    }
    
    return pEvent;
}

} // namespace internal
} // namespace slideshow