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//Native menubars are only supported for Windows Mobile not the standard SDK/generic WinCE

#ifdef Q_WS_WINCE

#include "qmenu.h"

#include "qt_windows.h"

#include "qapplication.h"

#include "qmainwindow.h"

#include "qtoolbar.h"

#include "qevent.h"

#include "qstyle.h"

#include "qdebug.h"

#include "qwidgetaction.h"

#include <private/qapplication_p.h>

#include <private/qmenu_p.h>

#include <private/qmenubar_p.h>

#include "qmenu_wince_resource_p.h"

#include <QtCore/qlibrary.h>

#include <commctrl.h>

#if Q_OS_WINCE_WM

#   include <windowsm.h>

#endif

#include "qguifunctions_wince.h"

#ifndef QT_NO_MENUBAR

#ifndef SHCMBF_EMPTYBAR

#define SHCMBF_EMPTYBAR 0x0001

#endif

#ifndef SHCMBM_GETSUBMENU

#define SHCMBM_GETSUBMENU (WM_USER + 401)

#endif

#ifdef Q_OS_WINCE_WM

#   define SHMBOF_NODEFAULT 0x00000001

#   define SHMBOF_NOTIFY    0x00000002

#   define SHCMBM_OVERRIDEKEY (WM_USER + 0x193)

#endif

extern bool qt_wince_is_smartphone();//defined in qguifunctions_wce.cpp

extern bool qt_wince_is_pocket_pc(); //defined in qguifunctions_wce.cpp

QT_BEGIN_NAMESPACE

static uint qt_wce_menu_static_cmd_id = 200;

static QList<QMenuBar*> nativeMenuBars;

struct qt_SHMENUBARINFO

{

    DWORD     cbSize;

    HWND      hwndParent;

    DWORD     dwFlags;

    UINT      nToolBarId;

    HINSTANCE hInstRes;

    int       nBmpId;

    int       cBmpImages;

    HWND      hwndMB;

    COLORREF  clrBk;

};

typedef int (WINAPI *superfunc)(int, int);

typedef BOOL (WINAPI *AygCreateMenuBar)(qt_SHMENUBARINFO*);

typedef HRESULT (WINAPI *AygEnableSoftKey)(HWND,UINT,BOOL,BOOL);

static bool aygResolved = false;

static AygCreateMenuBar ptrCreateMenuBar = 0;

static AygEnableSoftKey ptrEnableSoftKey = 0;

static void resolveAygLibs()

{

    if (!aygResolved) {

        aygResolved = true;

        QLibrary aygLib(QLatin1String("aygshell"));

        if (!aygLib.load())

            return;

        ptrCreateMenuBar = (AygCreateMenuBar) aygLib.resolve("SHCreateMenuBar");

        ptrEnableSoftKey = (AygEnableSoftKey) aygLib.resolve("SHEnableSoftkey");

    }

}

static void qt_wce_enable_soft_key(HWND handle, uint command) 

{

    resolveAygLibs();

    if (ptrEnableSoftKey)

        ptrEnableSoftKey(handle, command, false, true);

}

static void qt_wce_disable_soft_key(HWND handle, uint command) 

{

    resolveAygLibs();

    if (ptrEnableSoftKey)

        ptrEnableSoftKey(handle, command, false, false);

}

static void qt_wce_delete_action_list(QList<QWceMenuAction*> *list) {

    for(QList<QWceMenuAction*>::Iterator it = list->begin(); it != list->end(); ++it) {

        QWceMenuAction *action = (*it);

        delete action;

        action = 0;

    }

    list->clear();

}

//search for first QuitRole in QMenuBar

static QAction* qt_wce_get_quit_action(QList<QAction *> actionItems) {

    QAction *returnAction = 0;

    for (int i = 0; i < actionItems.size(); ++i) {

        QAction *action = actionItems.at(i);

        if (action->menuRole() == QAction::QuitRole)

            returnAction = action;

        else 

            if (action->menu())

                returnAction = qt_wce_get_quit_action(action->menu()->actions());

        if (returnAction)

            return returnAction; //return first action found

    }

    return 0; //nothing found;

}

static QAction* qt_wce_get_quit_action(QList<QWceMenuAction*> actionItems) {

    for (int i = 0; i < actionItems.size(); ++i) {

        if (actionItems.at(i)->action->menuRole() == QAction::QuitRole)

            return actionItems.at(i)->action;

        else if (actionItems.at(i)->action->menu()) {

            QAction *returnAction = qt_wce_get_quit_action(actionItems.at(i)->action->menu()->actions());

            if (returnAction)

                return returnAction;

        }

    }

    return 0;

}

static HMODULE qt_wce_get_module_handle() {

    HMODULE module =  0; //handle to resources

    if (!(module = GetModuleHandle(L"QtGui4"))) //release dynamic

        if (!(module = GetModuleHandle(L"QtGuid4"))) //debug dynamic

            module = (HINSTANCE)qWinAppInst(); //static

    Q_ASSERT_X(module, "qt_wce_get_module_handle()", "cannot get handle to module?");

    return module;

}

static void qt_wce_change_command(HWND menuHandle, int item, int command) {

TBBUTTONINFOA tbbi;

    memset(&tbbi,0,sizeof(tbbi));

    tbbi.cbSize = sizeof(tbbi);

    tbbi.dwMask = TBIF_COMMAND;

    tbbi.idCommand = command;

    SendMessage(menuHandle, TB_SETBUTTONINFO, item, (LPARAM)&tbbi);

}

static void qt_wce_rename_menu_item(HWND menuHandle, int item, const QString &newText) {

    TBBUTTONINFOA tbbi;

    memset(&tbbi,0,sizeof(tbbi));

    tbbi.cbSize = sizeof(tbbi);

    tbbi.dwMask = TBIF_TEXT;

    QString text = newText;

    text.remove(QChar::fromLatin1('&'));

    tbbi.pszText = (LPSTR) text.utf16();

    SendMessage(menuHandle, TB_SETBUTTONINFO, item, (LPARAM)&tbbi);

}

static HWND qt_wce_create_menubar(HWND parentHandle, HINSTANCE resourceHandle, int toolbarID, int flags = 0) {

    resolveAygLibs();

    if (ptrCreateMenuBar) {

        qt_SHMENUBARINFO mbi;

        memset(&mbi, 0, sizeof(qt_SHMENUBARINFO));

        mbi.cbSize     = sizeof(qt_SHMENUBARINFO);

        mbi.hwndParent = parentHandle;

        mbi.hInstRes   = resourceHandle;

        mbi.dwFlags = flags;

        mbi.nToolBarId = toolbarID;

        if (ptrCreateMenuBar(&mbi)) {

#ifdef Q_OS_WINCE_WM

            // Tell the menu bar that we want to override hot key behaviour.

            LPARAM lparam = MAKELPARAM(SHMBOF_NODEFAULT | SHMBOF_NOTIFY,

                                       SHMBOF_NODEFAULT | SHMBOF_NOTIFY);

            SendMessage(mbi.hwndMB, SHCMBM_OVERRIDEKEY, VK_TBACK, lparam);

#endif

            return mbi.hwndMB;

        }

    }

    return 0;

}

static void qt_wce_insert_action(HMENU menu, QWceMenuAction *action, bool created) {

    Q_ASSERT_X(menu, "AppendMenu", "menu is 0");

    if (action->action->isVisible()) {

        int flags;

        action->action->isEnabled() ? flags = MF_ENABLED : flags = MF_GRAYED;

        QString text = action->action->iconText();

        text.remove(QChar::fromLatin1('&'));

        if (action->action->isSeparator()) {

            AppendMenu (menu, MF_SEPARATOR , 0, 0);

        }

        else if (action->action->menu()) {

            text.remove(QChar::fromLatin1('&'));

            AppendMenu (menu, MF_STRING | flags | MF_POPUP,

            (UINT) action->action->menu()->wceMenu(created), reinterpret_cast<const wchar_t *> (text.utf16()));

        }

        else {

            AppendMenu (menu, MF_STRING | flags, action->command, reinterpret_cast<const wchar_t *> (text.utf16()));

        }

        if (action->action->isCheckable())

            if (action->action->isChecked())

                CheckMenuItem(menu, action->command, MF_BYCOMMAND | MF_CHECKED);

            else 

                CheckMenuItem(menu, action->command, MF_BYCOMMAND | MF_UNCHECKED);

    }

}

/*!

    \internal 

    This function refreshes the native Windows CE menu.

*/

void QMenuBar::wceRefresh() {

    for (int i = 0; i < nativeMenuBars.size(); ++i)

        nativeMenuBars.at(i)->d_func()->wceRefresh();

}

void QMenuBarPrivate::wceRefresh() {

    DrawMenuBar(wce_menubar->menubarHandle);

}

/*!

    \internal 

    This function sends native Windows CE commands to Qt menus.

*/

QAction* QMenu::wceCommands(uint command) { 

    Q_D(QMenu);

    return d->wceCommands(command);

}

/*!

    \internal 

    This function sends native Windows CE commands to Qt menu bars

    and all their child menus.

*/

void QMenuBar::wceCommands(uint command, HWND) {

    for (int i = 0; i < nativeMenuBars.size(); ++i)

            nativeMenuBars.at(i)->d_func()->wceCommands(command);

}

bool QMenuBarPrivate::wceEmitSignals(QList<QWceMenuAction*> actions, uint command) {

    QAction *foundAction = 0;

    for (int i = 0; i < actions.size(); ++i) {

        if (foundAction)

            break;

        QWceMenuAction *action = actions.at(i);

        if (action->action->menu()) {

            foundAction = action->action->menu()->wceCommands(command);

        }

        else if (action->command == command) {

            emit q_func()->triggered(action->action);

            action->action->activate(QAction::Trigger);

            return true;

        }

    }

    if (foundAction) {

        emit q_func()->triggered(foundAction);

        return true;

    }

    return false;

}

void QMenuBarPrivate::wceCommands(uint command) {

    if (wceClassicMenu) {

        for (int i = 0; i < wce_menubar->actionItemsClassic.size(); ++i)

            wceEmitSignals(wce_menubar->actionItemsClassic.at(i), command);

    } else {

        if (wceEmitSignals(wce_menubar->actionItems, command)) {

            return ;

        }

        else if (wce_menubar->leftButtonIsMenu) {//check if command is on the left quick button

            wceEmitSignals(wce_menubar->actionItemsLeftButton, command);

        }

        else if ((wce_menubar->leftButtonAction) && (command == wce_menubar->leftButtonCommand)) {

            emit q_func()->triggered(wce_menubar->leftButtonAction);

            wce_menubar->leftButtonAction->activate(QAction::Trigger);

        }

    }

}

QAction *QMenuPrivate::wceCommands(uint command) {

    QAction *foundAction = 0;

    for (int i  = 0; i < wce_menu->actionItems.size(); ++i) {

        if (foundAction)

            break;

        QWceMenuAction *action = wce_menu->actionItems.at(i);

        if (action->action->menu()) {

            foundAction = action->action->menu()->d_func()->wceCommands(command);

        }

        else if (action->command == command) {

            action->action->activate(QAction::Trigger);

            return action->action;

        }

    }

    if (foundAction)

        emit q_func()->triggered(foundAction);

    return foundAction;

}

void QMenuBarPrivate::wceCreateMenuBar(QWidget *parent) {

    Q_Q(QMenuBar);

    wce_menubar = new QWceMenuBarPrivate(this);

    wce_menubar->parentWindowHandle = parent ? parent->winId() : q->winId();

    wce_menubar->leftButtonAction = defaultAction;

    wce_menubar->menubarHandle = qt_wce_create_menubar(wce_menubar->parentWindowHandle, (HINSTANCE)qWinAppInst(), 0, SHCMBF_EMPTYBAR);

    Q_ASSERT_X(wce_menubar->menubarHandle, "wceCreateMenuBar", "cannot create empty menu bar");

    DrawMenuBar(wce_menubar->menubarHandle);

    nativeMenuBars.append(q);

    wceClassicMenu = (!qt_wince_is_smartphone() && !qt_wince_is_pocket_pc());

}

void QMenuBarPrivate::wceDestroyMenuBar() {

    Q_Q(QMenuBar);

    int index = nativeMenuBars.indexOf(q);

    nativeMenuBars.removeAt(index);

    if (wce_menubar)

      delete wce_menubar;

    wce_menubar = 0;

}

QMenuBarPrivate::QWceMenuBarPrivate::QWceMenuBarPrivate(QMenuBarPrivate *menubar) : 

                                     menubarHandle(0), menuHandle(0),leftButtonMenuHandle(0) , 

                                     leftButtonAction(0), leftButtonIsMenu(false), d(menubar) {

}

QMenuBarPrivate::QWceMenuBarPrivate::~QWceMenuBarPrivate() {

    if (menubarHandle)

        DestroyWindow(menubarHandle);

    qt_wce_delete_action_list(&actionItems);

    qt_wce_delete_action_list(&actionItemsLeftButton);

    for (int i=0; i<actionItemsClassic.size(); ++i)

        if (!actionItemsClassic.value(i).empty())

            qt_wce_delete_action_list(&actionItemsClassic[i]);

    actionItemsClassic.clear();

    menubarHandle = 0;

    menuHandle = 0;

    leftButtonMenuHandle = 0;

    leftButtonCommand = 0;

    QMenuBar::wceRefresh();

}

QMenuPrivate::QWceMenuPrivate::QWceMenuPrivate() {

    menuHandle = 0;

}

QMenuPrivate::QWceMenuPrivate::~QWceMenuPrivate() {

    qt_wce_delete_action_list(&actionItems);

    menuHandle = 0;

}

void QMenuPrivate::QWceMenuPrivate::addAction(QAction *a, QWceMenuAction *before) {

    QWceMenuAction *action = new QWceMenuAction;

    action->action = a;

    action->command = qt_wce_menu_static_cmd_id++;

    addAction(action, before);

}

void QMenuPrivate::QWceMenuPrivate::addAction(QWceMenuAction *action, QWceMenuAction *before) {

    if (!action)

        return;

    int before_index = actionItems.indexOf(before);

    if (before_index < 0) {

        before = 0;

        before_index = actionItems.size();

    }

    actionItems.insert(before_index, action);

    rebuild();

}

/*!

    \internal

    This function will return the HMENU used to create the native

    Windows CE menu bar bindings.

*/

HMENU QMenu::wceMenu(bool create) { return d_func()->wceMenu(create); }

HMENU QMenuPrivate::wceMenu(bool create) {

    if (!wce_menu)

        wce_menu = new QWceMenuPrivate;

    if (!wce_menu->menuHandle || create) 

        wce_menu->rebuild(create);

    return wce_menu->menuHandle;

}

void QMenuPrivate::QWceMenuPrivate::rebuild(bool reCreate) {

    if (menuHandle && !reCreate)

      DestroyMenu(menuHandle);

    menuHandle = CreatePopupMenu();

    for (int i = 0; i < actionItems.size(); ++i) {

        QWceMenuAction *action = actionItems.at(i);

        action->menuHandle = menuHandle;

        qt_wce_insert_action(menuHandle, action, true);

    }

    QMenuBar::wceRefresh();

}

void QMenuPrivate::QWceMenuPrivate::syncAction(QWceMenuAction *) {

    rebuild();

}

void QMenuPrivate::QWceMenuPrivate::removeAction(QWceMenuAction *action) {

        actionItems.removeAll(action);

        delete action;

        action = 0;

        rebuild();

}

void QMenuBarPrivate::QWceMenuBarPrivate::addAction(QAction *a, QWceMenuAction *before) {

    QWceMenuAction *action = new QWceMenuAction;

    action->action = a;

    action->command = qt_wce_menu_static_cmd_id++;

    addAction(action, before);

}

void QMenuBarPrivate::QWceMenuBarPrivate::addAction(QWceMenuAction *action, QWceMenuAction *before) {

    if (!action)

        return;

    int before_index = actionItems.indexOf(before);

    if (before_index < 0) {

        before = 0;

        before_index = actionItems.size();

    }

    actionItems.insert(before_index, action);

    rebuild();

}

void QMenuBarPrivate::QWceMenuBarPrivate::syncAction(QWceMenuAction*) {

    QMenuBar::wceRefresh();

    rebuild();

}

void QMenuBarPrivate::QWceMenuBarPrivate::removeAction(QWceMenuAction *action) {

    actionItems.removeAll(action);

    delete action;

    action = 0;

    rebuild();

}

void QMenuBarPrivate::_q_updateDefaultAction() {

    if (wce_menubar)

        wce_menubar->rebuild();

}

void QMenuBarPrivate::QWceMenuBarPrivate::rebuild() {

    d->q_func()->resize(0,0);

    parentWindowHandle = d->q_func()->parentWidget() ? d->q_func()->parentWidget()->winId() : d->q_func()->winId();

    if (d->wceClassicMenu) {

        QList<QAction*> actions = d->actions;

        int maxEntries;

        int resourceHandle;

        if (actions.size() < 5) {

            maxEntries = 4;

            resourceHandle = IDR_MAIN_MENU3;

        } else if (actions.size() < 7) {

            maxEntries = 6;

            resourceHandle = IDR_MAIN_MENU4;

        }

        else {

          maxEntries = 8;

          resourceHandle = IDR_MAIN_MENU5;

        }

        Q_ASSERT_X(menubarHandle, "rebuild !created", "menubar already deleted");

        DestroyWindow(menubarHandle);

        menubarHandle = qt_wce_create_menubar(parentWindowHandle, qt_wce_get_module_handle(), resourceHandle);

        Q_ASSERT_X(menubarHandle, "rebuild classic menu", "cannot create menubar from resource");

        DrawMenuBar(menubarHandle);