/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

/*

* This file is part of the LibreOffice project.

*

* This Source Code Form is subject to the terms of the Mozilla Public

* License, v. 2.0. If a copy of the MPL was not distributed with this

* file, You can obtain one at http://mozilla.org/MPL/2.0/.

*

* This file incorporates work covered by the following license notice:

*

*   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 .

*/

#include <vcl/toolkit/button.hxx>

#include <vcl/layout.hxx>

#include <bitmaps.hlst>

#include <NotebookbarPopup.hxx>

#include <PriorityHBox.hxx>

#include <PriorityMergedHBox.hxx>

#include <comphelper/lok.hxx>

#define DUMMY_WIDTH 50

#define BUTTON_WIDTH 30

/*

* PriorityMergedHBox is a VclHBox which hides its own children if there is no sufficient space.

*/

PriorityMergedHBox::PriorityMergedHBox(vcl::Window* pParent)

    : PriorityHBox(pParent)

{

    m_pButton = VclPtr<PushButton>::Create(this, WB_FLATBUTTON);

    m_pButton->SetClickHdl(LINK(this, PriorityMergedHBox, PBClickHdl));

    m_pButton->SetModeImage(Image(StockImage::Yes, CHEVRON));

    m_pButton->set_width_request(25);

    m_pButton->set_pack_type(VclPackType::End);

    m_pButton->Show();

}

Unexecuted instantiation: PriorityMergedHBox::PriorityMergedHBox(vcl::Window*)

Unexecuted instantiation: PriorityMergedHBox::PriorityMergedHBox(vcl::Window*)

void PriorityMergedHBox::Resize()

{

    if (comphelper::LibreOfficeKit::isActive())

        return VclHBox::Resize();

    if (!m_bInitialized)

        Initialize();

    if (!m_bInitialized)

    {

        return VclHBox::Resize();

    }

    tools::Long nWidth = GetSizePixel().Width();

    tools::Long nCurrentWidth = VclHBox::calculateRequisition().getWidth() + BUTTON_WIDTH;

    // Hide lower priority controls

    for (int i = GetChildCount() - 1; i >= 0; i--)

    {

        vcl::Window* pWindow = GetChild(i);

        if (nCurrentWidth <= nWidth)

            break;

        if (pWindow && pWindow->GetParent() == this && pWindow->IsVisible())

        {

            tools::Long nWindowWidth = pWindow->GetOutputSizePixel().Width();

            if (!nWindowWidth)

                nWindowWidth = getLayoutRequisition(*pWindow).Width() + get_spacing();

            if (nWindowWidth)

                nCurrentWidth -= nWindowWidth;

            else

                nCurrentWidth -= DUMMY_WIDTH;

            pWindow->Hide();

        }

    }

    // Show higher priority controls if we already have enough space

    for (int i = 0; i < GetChildCount(); i++)

    {

        vcl::Window* pWindow = GetChild(i);

        if (pWindow->GetParent() != this)

        {

            continue;

        }

        if (pWindow && !pWindow->IsVisible())

        {

            pWindow->Show();

            nCurrentWidth += getLayoutRequisition(*pWindow).Width() + get_spacing();

            if (nCurrentWidth > nWidth)

            {

                pWindow->Hide();

                break;

            }

        }

    }

    VclHBox::Resize();

    if (HasHiddenChildren())

        m_pButton->Show();

    else

        m_pButton->Hide();

}

void PriorityMergedHBox::dispose()

{

    m_pButton.disposeAndClear();

    if (m_pPopup)

        m_pPopup.disposeAndClear();

    PriorityHBox::dispose();

}

bool PriorityMergedHBox::HasHiddenChildren() const

{

    for (int i = GetChildCount() - 1; i >= 0; i--)

    {

        vcl::Window* pWindow = GetChild(i);

        if (pWindow && pWindow->GetParent() == this && !pWindow->IsVisible())

            return true;

    }

    return false;

}

Size PriorityMergedHBox::calculateRequisition() const

{

    if (!m_bInitialized)

    {

        return VclHBox::calculateRequisition();

    }

    sal_uInt16 nVisibleChildren = 0;

    Size aSize;

    // find max height and total width

    for (vcl::Window* pChild = GetWindow(GetWindowType::FirstChild); pChild;

         pChild = pChild->GetWindow(GetWindowType::Next))

    {

        Size aChildSize = getLayoutRequisition(*pChild);

        if (!pChild->IsVisible())

            setPrimaryDimension(aChildSize, 0);

        else

        {

            ++nVisibleChildren;

            tools::Long nPrimaryDimension = getPrimaryDimension(aChildSize);

            nPrimaryDimension += pChild->get_padding() * 2;

            setPrimaryDimension(aChildSize, nPrimaryDimension);

        }

        accumulateMaxes(aChildSize, aSize);

    }

    return finalizeMaxes(aSize, nVisibleChildren);

}

IMPL_LINK(PriorityMergedHBox, PBClickHdl, Button*, /*pButton*/, void)

{

    if (m_pPopup)

        m_pPopup.disposeAndClear();

    m_pPopup = VclPtr<NotebookbarPopup>::Create(this);

    for (int i = 0; i < GetChildCount(); i++)

    {

        vcl::Window* pWindow = GetChild(i);

        if (pWindow != m_pButton)

        {

            if (!pWindow->IsVisible())

            {

                pWindow->Show();

                pWindow->SetParent(m_pPopup->getBox());

                // count is decreased because we moved child

                i--;

            }

        }

    }

    m_pPopup->hideSeparators(true);

    tools::Long x = m_pButton->GetPosPixel().getX();

    tools::Long y = m_pButton->GetPosPixel().getY() + GetSizePixel().Height();

    tools::Rectangle aRect(x, y, x, y);

    m_pPopup->StartPopupMode(aRect, FloatWinPopupFlags::Down | FloatWinPopupFlags::GrabFocus

                                        | FloatWinPopupFlags::AllMouseButtonClose);

}

/* vim:set shiftwidth=4 softtabstop=4 expandtab: */