/**************************************************************
 * 
 * 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
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#ifndef _SVX_SIDEBAR_POPUP_HXX_
#define _SVX_SIDEBAR_POPUP_HXX_

#include "svx/svxdllapi.h"
#include <rtl/ustring.hxx>
#include <tools/link.hxx>

#include <boost/function.hpp>
#include <boost/scoped_ptr.hpp>

class Window;
class ToolBox;

namespace svx { namespace sidebar {

class PopupContainer;
class PopupControl;

/** A wrapper around a PopupContainer and a PopupControl object.
    Usually used as drop down for a toolbox.  Use Show() to start
    drop down mode and Hide() to end it.
*/
class SVX_DLLPUBLIC Popup
{
public :
    /** Create a Popup wrapper object.
        @param pParent
            Parent window of the PopupContainer, which in turn is the
            parent of the PopupControl.
        @param rControlCreator
            A functor that is called to create the PopupControl object
            (usually an instance of a class derived from
            PopupControl).
    */
    Popup (
        Window* pParent,
        const ::boost::function<PopupControl*(PopupContainer*)>& rControlCreator,
        const ::rtl::OUString& rsAccessibleName);
    virtual ~Popup (void);

    /** Show the popup.
        @rToolBox
            The tool box is used to determine the position at which
            the popup is displayed.
    */
    void Show (ToolBox& rToolBox);

    /** Hide the popup.
        This method is called automatically when eg. the user clicks
        outside the popup or when the ESC-key is pressed.  The
        application can call Hide() when the popup should be closed
        for other, non-standard reasons.
    */
    void Hide (void);
    
    /** If you want to be informed when the popup closes then add a
        callback that is called after that.
    */
    void SetPopupModeEndHandler (const ::boost::function<void(void)>& rCallback);
    
protected:    
    ::boost::scoped_ptr<PopupControl> mpControl;

    /** Make sure that both PopupContainer and PopupControl objects
        exist.  Calls the maControlCreator functor if necessary.
    */
    void ProvideContainerAndControl (void);

    /** A derived specialisation class can override this method to do
        additional work.
    */
    virtual void CreateContainerAndControl (void);

private:
    Window* mpParent;
    ::boost::function<PopupControl*(PopupContainer*)> maControlCreator;
    ::boost::function<void(void)> maPopupModeEndCallback;
    const ::rtl::OUString msAccessibleName;
    ::boost::scoped_ptr<PopupContainer> mpContainer;

    DECL_LINK(PopupModeEndHandler, void*);
};

} } // end of namespace svx::sidebar

#endif