/*
 * Copyright 2008, Ingo Weinhold, ingo_weinhold@gmx.de.
 * Distributed under the terms of the MIT License.
 */


// NOTE: Nasty hack to get access to BScrollView's private parts.
#include <ScrollBar.h>
#define private protected
#include <ScrollView.h>
#undef private

#include "TermScrollView.h"

#include <Message.h>


class TermScrollBar : public BScrollBar {
public:
        TermScrollBar(BRect frame, const char *name, BView *target,
                        float min, float max, orientation direction)
                :
                BScrollBar(frame, name, target, min, max, direction)
        {
        }

        virtual void ValueChanged(float newValue)
        {
                if (BView* target = Target())
                        target->ScrollTo(0, newValue);
        }
};


TermScrollView::TermScrollView(const char* name, BView* child, BView* target,
                bool overlapTop, uint32 resizingMode)
        :
        BScrollView(name, child, resizingMode, 0, false, true, B_NO_BORDER)
{
        child->TargetedByScrollView(NULL);

        // replace the vertical scroll bar with our own
        if (fVerticalScrollBar != NULL) {
                BRect frame(fVerticalScrollBar->Frame());
                RemoveChild(fVerticalScrollBar);
                delete fVerticalScrollBar;

                // Overlap one pixel at the top (if required) with the menu for
                // aesthetical reasons.
                if (overlapTop)
                        frame.top--;

                TermScrollBar* scrollBar = new TermScrollBar(frame, "_VSB_", target, 0,
                        1000, B_VERTICAL);
                AddChild(scrollBar);
                fVerticalScrollBar = scrollBar;
        }

        target->TargetedByScrollView(this);
}


TermScrollView::~TermScrollView()
{
}