/*
  ==============================================================================

   This file is part of the JUCE library - "Jules' Utility Class Extensions"
   Copyright 2004-6 by Raw Material Software ltd.

  ------------------------------------------------------------------------------

   JUCE can be redistributed and/or modified under the terms of the
   GNU General Public License, as published by the Free Software Foundation;
   either version 2 of the License, or (at your option) any later version.

   JUCE 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 General Public License
   along with JUCE; if not, visit www.gnu.org/licenses or write to the
   Free Software Foundation, Inc., 59 Temple Place, Suite 330, 
   Boston, MA 02111-1307 USA

  ------------------------------------------------------------------------------

   If you'd like to release a closed-source product which uses JUCE, commercial
   licenses are also available: visit www.rawmaterialsoftware.com/juce for
   more information.

  ==============================================================================
*/

#ifndef __JUCE_STRETCHABLELAYOUTRESIZERBAR_JUCEHEADER__
#define __JUCE_STRETCHABLELAYOUTRESIZERBAR_JUCEHEADER__

#include "../juce_Component.h"
#include "juce_StretchableLayoutManager.h"


//==============================================================================
/**
    A component that acts as one of the vertical or horizontal bars you see being
    used to resize panels in a window.

    One of these acts with a StretchableLayoutManager to resize the other components.

    @see StretchableLayoutManager
*/
class JUCE_API  StretchableLayoutResizerBar  : public Component
{
public:
    //==============================================================================
    /** Creates a resizer bar for use on a specified layout.

        @param layoutToUse          the layout that will be affected when this bar
                                    is dragged
        @param itemIndexInLayout    the item index in the layout that corresponds to
                                    this bar component. You'll need to set up the item
                                    properties in a suitable way for a divider bar, e.g.
                                    for an 8-pixel wide bar which, you could call
                                    myLayout->setItemLayout (barIndex, 8, 8, 8)
        @param isBarVertical        true if it's an upright bar that you drag left and
                                    right; false for a horizontal one that you drag up and
                                    down
    */
    StretchableLayoutResizerBar (StretchableLayoutManager* const layoutToUse,
                                 const int itemIndexInLayout,
                                 const bool isBarVertical);

    /** Destructor. */
    ~StretchableLayoutResizerBar();

    //==============================================================================
    /** This is called when the bar is dragged.

        This method must update the positions of any components whose position is
        determined by the StretchableLayoutManager, because they might have just
        moved.

        The default implementation calls the resized() method of this component's
        parent component, because that's often where you're likely to apply the
        layout, but it can be overridden for more specific needs.
    */
    virtual void hasBeenMoved();

    //==============================================================================
    /** @internal */
    void paint (Graphics& g);
    /** @internal */
    void mouseDown (const MouseEvent& e);
    /** @internal */
    void mouseDrag (const MouseEvent& e);


    //==============================================================================
    juce_UseDebuggingNewOperator

private:
    StretchableLayoutManager* layout;
    int itemIndex, mouseDownPos;
    bool isVertical;

    StretchableLayoutResizerBar (const StretchableLayoutResizerBar&);
    const StretchableLayoutResizerBar& operator= (const StretchableLayoutResizerBar&);
};



#endif   // __JUCE_STRETCHABLELAYOUTRESIZERBAR_JUCEHEADER__
