/*
 * Copyright 2008-2011, Haiku, Inc. All rights reserved.
 * Distributed under the terms of the MIT License.
 *
 * Authors:
 *              Michael Pfeiffer <laplace@users.sourceforge.net>
 *              Axel Dörfler, axeld@pinc-software.de
 */


#include "WizardView.h"

#include <LayoutBuilder.h>
#include <Button.h>
#include <Catalog.h>
#include <SeparatorView.h>

#include "WizardPageView.h"


#undef B_TRANSLATION_CONTEXT
#define B_TRANSLATION_CONTEXT "WizardView"


WizardView::WizardView(const char* name)
        :
        BGroupView(name, B_VERTICAL, 0),
        fPrevious(NULL),
        fNext(NULL),
        fPage(NULL)
{
        _BuildUI();
        SetPreviousButtonHidden(true);
}


WizardView::~WizardView()
{
}


void
WizardView::SetPage(WizardPageView* page)
{
        if (fPage == page)
                return;

        if (fPage != NULL) {
                fPageContainer->RemoveChild(fPage);
                delete fPage;
        }

        fPage = page;
        if (page == NULL)
                return;

        fPageContainer->AddChild(page);
        Window()->ResizeToPreferred();
}


void
WizardView::PageCompleted()
{
        if (fPage != NULL)
                fPage->PageCompleted();

        // Restore initial state
        SetNextButtonLabel(B_TRANSLATE_COMMENT("Next", "Button"));
        SetPreviousButtonLabel(B_TRANSLATE_COMMENT("Previous", "Button"));
        SetNextButtonEnabled(true);
        SetPreviousButtonEnabled(true);
        SetPreviousButtonHidden(false);
}


void
WizardView::SetPreviousButtonEnabled(bool enabled)
{
        fPrevious->SetEnabled(enabled);
}


void
WizardView::SetNextButtonEnabled(bool enabled)
{
        fNext->SetEnabled(enabled);
}


void
WizardView::SetPreviousButtonLabel(const char* text)
{
        fPrevious->SetLabel(text);
}


void
WizardView::SetNextButtonLabel(const char* text)
{
        fNext->SetLabel(text);
}


void
WizardView::SetPreviousButtonHidden(bool hide)
{
        if (hide) {
                if (!fPrevious->IsHidden())
                        fPrevious->Hide();
        } else {
                if (fPrevious->IsHidden())
                        fPrevious->Show();
        }
}


void
WizardView::_BuildUI()
{
        fPageContainer = new BGroupView("page container");
        fPageContainer->GroupLayout()->SetInsets(B_USE_WINDOW_SPACING,
                B_USE_WINDOW_SPACING, B_USE_WINDOW_SPACING, B_USE_DEFAULT_SPACING);
        fPrevious = new BButton("previous",
                B_TRANSLATE_COMMENT("Previous", "Button"),
                new BMessage(kMessagePrevious));
        fNext = new BButton("next", B_TRANSLATE_COMMENT("Next", "Button"),
                new BMessage(kMessageNext));
        BButton* quit = new BButton("quit", B_TRANSLATE_COMMENT("Quit", "Button"),
                new BMessage(B_QUIT_REQUESTED));

        BLayoutBuilder::Group<>(this)
                .Add(fPageContainer)
                .Add(new BSeparatorView(B_HORIZONTAL))
                .AddGroup(B_HORIZONTAL)
                        .SetInsets(B_USE_WINDOW_SPACING, B_USE_DEFAULT_SPACING,
                                B_USE_WINDOW_SPACING, B_USE_WINDOW_SPACING)
                        .Add(quit)
                        .AddGlue()
                        .Add(fPrevious)
                        .Add(fNext)
                        .End()
                .End();
}