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** This file is part of the Qt Designer of the Qt Toolkit.
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#include <QtGui/QAction>

#include "tabordereditor_plugin.h"
#include "tabordereditor_tool.h"

#include <QtDesigner/QDesignerFormEditorInterface>
#include <QtDesigner/QDesignerFormWindowInterface>
#include <QtDesigner/QDesignerFormWindowManagerInterface>

QT_BEGIN_NAMESPACE

using namespace qdesigner_internal;

TabOrderEditorPlugin::TabOrderEditorPlugin()
    : m_initialized(false)
{
}

TabOrderEditorPlugin::~TabOrderEditorPlugin()
{
}

bool TabOrderEditorPlugin::isInitialized() const
{
    return m_initialized;
}

void TabOrderEditorPlugin::initialize(QDesignerFormEditorInterface *core)
{
    Q_ASSERT(!isInitialized());

    m_action = new QAction(tr("Edit Tab Order"), this);
    m_action->setObjectName(QLatin1String("_qt_edit_tab_order_action"));
    QIcon icon = QIcon::fromTheme("designer-edit-tabs",
                                  QIcon(core->resourceLocation() + QLatin1String("/tabordertool.png")));
    m_action->setIcon(icon);
    m_action->setEnabled(false);

    setParent(core);
    m_core = core;
    m_initialized = true;

    connect(core->formWindowManager(), SIGNAL(formWindowAdded(QDesignerFormWindowInterface*)),
            this, SLOT(addFormWindow(QDesignerFormWindowInterface*)));

    connect(core->formWindowManager(), SIGNAL(formWindowRemoved(QDesignerFormWindowInterface*)),
            this, SLOT(removeFormWindow(QDesignerFormWindowInterface*)));

    connect(core->formWindowManager(), SIGNAL(activeFormWindowChanged(QDesignerFormWindowInterface*)),
                this, SLOT(activeFormWindowChanged(QDesignerFormWindowInterface*)));
}

void TabOrderEditorPlugin::activeFormWindowChanged(QDesignerFormWindowInterface *formWindow)
{
    m_action->setEnabled(formWindow != 0);
}

QDesignerFormEditorInterface *TabOrderEditorPlugin::core() const
{
    return m_core;
}

void TabOrderEditorPlugin::addFormWindow(QDesignerFormWindowInterface *formWindow)
{
    Q_ASSERT(formWindow != 0);
    Q_ASSERT(m_tools.contains(formWindow) == false);

    TabOrderEditorTool *tool = new TabOrderEditorTool(formWindow, this);
    m_tools[formWindow] = tool;
    connect(m_action, SIGNAL(triggered()), tool->action(), SLOT(trigger()));
    formWindow->registerTool(tool);
}

void TabOrderEditorPlugin::removeFormWindow(QDesignerFormWindowInterface *formWindow)
{
    Q_ASSERT(formWindow != 0);
    Q_ASSERT(m_tools.contains(formWindow) == true);

    TabOrderEditorTool *tool = m_tools.value(formWindow);
    m_tools.remove(formWindow);
    disconnect(m_action, SIGNAL(triggered()), tool->action(), SLOT(trigger()));
    // ### FIXME disable the tool

    delete tool;
}

QAction *TabOrderEditorPlugin::action() const
{
    return m_action;
}

QT_END_NAMESPACE