#include "alf/alf.h"

enum {
    ID_COMBO1,
    ID_COMBO2,
    ID_LBLCOMBOTEXT,
    ID_BTNCOMBOCLEAR,
    ID_NOTEBOOK,
    ID_HELLO,
    ID_B_TABBGSOLID,
    ID_B_TABBGTEXTURE,
    IDM_FILE,
    IDM_FILE_CLOSE,
    IDM_HELP,
    IDM_HELP_ABOUT,
    IDM_BACKGROUND,
    IDM_BACKGROUND_INHERIT,
    IDM_BACKGROUND_GRADIENT,
    IDM_BACKGROUND_GREEN,
    IDM_BACKGROUND_BLUE,
    ID__MAX
};

static HBRUSH red;
static HBRUSH green;
static HBRUSH blue;
static HBRUSH white;

BOOL (WINAPI *fnGradientFill)(HDC, PTRIVERTEX, ULONG, PVOID, ULONG, ULONG) = NULL;

enum PanelBackgroundMode {
    BG_INHERIT,
    BG_GRADIENT,
    BG_SOLID_GREEN,
    BG_SOLID_BLUE
};

#define FM_PANEL_SET_BGMODE     (ALF_WM_USER + 1)


static LRESULT
handleCommand(void *closure, HWND window, WORD notificationcode, WORD sourceid, HWND control)
{
    (void)closure;

    if (notificationcode == CBN_SELCHANGE && sourceid == ID_COMBO2) {
        TCHAR *text = ALF_ComboBoxCurrentText(control);

        ALF_SetWidgetText(window, ID_LBLCOMBOTEXT, text);

        ALF_Free(text);
    }
    if (control != NULL && sourceid == ID_BTNCOMBOCLEAR) {
        HWND combo = ALF_WidgetHwndById(window, ID_COMBO2);
        ALF_ComboBoxSetCurrentIndex(combo, -1);
    }
    if (sourceid == ID_HELLO) {
        MessageBox(window, TEXT("Hello World!"), TEXT("Hello"), MB_ICONASTERISK|MB_OK);
    }
    if (control != NULL && sourceid == ID_B_TABBGSOLID) {
        HWND nb = ALF_WidgetHwndById(window, ID_NOTEBOOK);
        ALF_NotebookAddFlag(nb, ALF_NOTEBOOK_SOLID_TAB_BACKGROUND);
    }
    if (control != NULL && sourceid == ID_B_TABBGTEXTURE) {
        HWND nb = ALF_WidgetHwndById(window, ID_NOTEBOOK);
        ALF_NotebookRemoveFlag(nb, ALF_NOTEBOOK_SOLID_TAB_BACKGROUND);
    }

    if (sourceid == IDM_FILE_CLOSE) {
        SendMessage(window, WM_CLOSE, 0, 0);
    }

    if (sourceid == IDM_BACKGROUND_BLUE) {
        HWND nb = ALF_WidgetHwndById(window, ID_NOTEBOOK);
        HWND panel = ALF_NotebookSelectedPanel(nb);
        SendMessage(panel, FM_PANEL_SET_BGMODE, 0, (LPARAM)BG_SOLID_BLUE);
    }

    if (sourceid == IDM_BACKGROUND_GREEN) {
        HWND nb = ALF_WidgetHwndById(window, ID_NOTEBOOK);
        HWND panel = ALF_NotebookSelectedPanel(nb);
        SendMessage(panel, FM_PANEL_SET_BGMODE, 0, (LPARAM)BG_SOLID_GREEN);
    }

    if (sourceid == IDM_BACKGROUND_INHERIT) {
        HWND nb = ALF_WidgetHwndById(window, ID_NOTEBOOK);
        HWND panel = ALF_NotebookSelectedPanel(nb);
        SendMessage(panel, FM_PANEL_SET_BGMODE, 0, (LPARAM)BG_INHERIT);
    }

    if (sourceid == IDM_BACKGROUND_GRADIENT) {
        HWND nb = ALF_WidgetHwndById(window, ID_NOTEBOOK);
        HWND panel = ALF_NotebookSelectedPanel(nb);
        SendMessage(panel, FM_PANEL_SET_BGMODE, 0, (LPARAM)BG_GRADIENT);
    }

    return 0;
}

/* common stuff */
typedef struct {
    DWORD bgmode;
} CommonPanelPriv;

static void commonPanelPaint(void *closure, HWND hwndPanel, HDC dc, RECT *rcPaint)
{
    CommonPanelPriv *priv = (CommonPanelPriv *)closure;

    if (priv->bgmode == BG_GRADIENT) {
        RECT rcClient;
        GetClientRect(hwndPanel, &rcClient);

        if (fnGradientFill) {
            TRIVERTEX vertex[6];
            vertex[0].x     = rcClient.left;
            vertex[0].y     = rcClient.top;
            vertex[0].Red   = 0xff00;
            vertex[0].Green = 0x8000;
            vertex[0].Blue  = 0x0000;
            vertex[0].Alpha = 0x0000;

            vertex[1].x     = rcClient.left;
            vertex[1].y     = rcClient.bottom;
            vertex[1].Red   = 0x9000;
            vertex[1].Green = 0x0000;
            vertex[1].Blue  = 0x9000;
            vertex[1].Alpha = 0x0000;

            vertex[2].x     = rcClient.right;
            vertex[2].y     = rcClient.top;
            vertex[2].Red   = 0x9000;
            vertex[2].Green = 0x0000;
            vertex[2].Blue  = 0x9000;
            vertex[2].Alpha = 0x0000;

            vertex[3].x     = rcClient.right;
            vertex[3].y     = rcClient.bottom;
            vertex[3].Red   = 0x0000;
            vertex[3].Green = 0xd000;
            vertex[3].Blue  = 0xd000;
            vertex[3].Alpha = 0x0000;

            vertex[4].x     = rcClient.left;
            vertex[4].y     = rcClient.bottom;
            vertex[4].Red   = 0x9000;
            vertex[4].Green = 0x0000;
            vertex[4].Blue  = 0x9000;
            vertex[4].Alpha = 0x0000;

            vertex[5].x     = rcClient.right;
            vertex[5].y     = rcClient.top;
            vertex[5].Red   = 0x9000;
            vertex[5].Green = 0x0000;
            vertex[5].Blue  = 0x9000;
            vertex[5].Alpha = 0x0000;

            GRADIENT_TRIANGLE gTriangle[2];
            gTriangle[0].Vertex1 = 0;
            gTriangle[0].Vertex2 = 1;
            gTriangle[0].Vertex3 = 2;
            gTriangle[1].Vertex1 = 3;
            gTriangle[1].Vertex2 = 4;
            gTriangle[1].Vertex3 = 5;

            fnGradientFill(dc, vertex, 6, gTriangle, 2, GRADIENT_FILL_TRIANGLE);
        } else {
            HBRUSH white = (HBRUSH)GetStockObject(WHITE_BRUSH);
            HBRUSH gray  = (HBRUSH)GetStockObject(GRAY_BRUSH);

            int s = 10;
            for (int y = rcClient.top; y < rcClient.bottom; y += 2*s) {
                for (int x = rcClient.left; x < rcClient.right; x += 2*s) {
                    RECT a = { x, y, x + s, y + s };
                    RECT b = { x + s, y, x + s + s, y + s };
                    RECT c = { x, y + s, x + s, y + s + s };
                    RECT d = { x + s, y + s, x + s + s, y + s + s };
                    FillRect(dc, &a, white);
                    FillRect(dc, &b, gray);
                    FillRect(dc, &c, gray);
                    FillRect(dc, &d, white);
                }
            }
        }
    } else {
        ALF_Panel_DefPaint(hwndPanel, dc, rcPaint);
    }
}

static LRESULT
commonPanelMessage(void *closure, HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam)
{
    CommonPanelPriv *priv = (CommonPanelPriv *)closure;

    if (msg == FM_PANEL_SET_BGMODE) {
        priv->bgmode = (DWORD)lparam;

        switch (priv->bgmode) {
        case BG_INHERIT:
            ALF_AddWidgetLayoutFlag(GetParent(hwnd), hwnd, ALF_LAYOUT_INHERITBGCOLOR);
            ALF_InvalidateBackground(hwnd);
            break;
        case BG_GRADIENT:
            ALF_SetBackgroundColor(hwnd, ALF_COLOR_TRANSPARENT);
            ALF_InvalidateBackground(hwnd);
            break;
        case BG_SOLID_BLUE:
            ALF_SetBackgroundColor(hwnd, ALF_COLOR_RGB(0, 0, 255));
            break;
        case BG_SOLID_GREEN:
            ALF_SetBackgroundColor(hwnd, ALF_COLOR_RGB(0, 255, 0));
            break;
        }
        return TRUE;
    }

    if (msg == WM_SIZE && priv->bgmode == BG_GRADIENT) {
        ALF_InvalidateBackground(hwnd);
    }

    return ALF_Panel_DefWindowProc(hwnd, msg, wparam, lparam);
}

static void
commonPanelDestroy(void *closure, HWND window)
{
    (void)window;
    ALF_Free(closure);
}

/* button panel */

static void
buttonPanelAttach(void *closure, HWND outerPanel)
{
    (void)closure;

    HWND b;
    HWND panel;

    ALF_PanelSetEdge(outerPanel, BDR_SUNKENOUTER);

    panel = ALF_AddPanel(outerPanel, (WORD)-1, 0, 0);

    ALF_AddLabel(panel, (WORD)-1, 0, 2, TEXT("normal"));
    ALF_AddLabel(panel, (WORD)-1, 0, 4, TEXT("disabled"));
    ALF_AddLabel(panel, (WORD)-1, 2, 0, TEXT("ALF"));
    ALF_AddLabel(panel, (WORD)-1, 4, 0, TEXT("native"));
    ALF_AddLabel(panel, (WORD)-1, 0, 6, TEXT("layout dummy"));

    b = ALF_AddButton(panel, ID_HELLO, 2, 2, TEXT("&Hello, World!"));
    ALF_SetWidgetLayoutMinSize(panel, b, 0, 0);
    b = ALF_AddButton(panel, (WORD)-1, 2, 4, TEXT("Hello, World!"));
    EnableWindow(b, FALSE);
    ALF_SetWidgetLayoutMinSize(panel, b, 0, 0);


    HWND hwndNb1  = CreateWindowEx(0,
                                   TEXT("BUTTON"),
                                   TEXT("H&ello, World!"),
                                   WS_CHILD | WS_TABSTOP | WS_VISIBLE | BS_PUSHBUTTON,
                                   0, 0, 100, 100,
                                   panel,
                                   (HMENU)(WORD)-1,
                                   (HINSTANCE)GetModuleHandle(NULL),
                                   NULL);
    HWND hwndNb2  = CreateWindowEx(0,
                                   TEXT("BUTTON"),
                                   TEXT("Hello, World!"),
                                   WS_CHILD | WS_TABSTOP | WS_VISIBLE | BS_PUSHBUTTON,
                                   0, 0, 100, 100,
                                   panel,
                                   (HMENU)(WORD)-1,
                                   (HINSTANCE)GetModuleHandle(NULL),
                                   NULL);
    EnableWindow(hwndNb2, FALSE);

    ALF_AddWidget(panel, 4, 2, hwndNb1, 0, 0, ALF_LAYOUT_INHERITFONT | ALF_LAYOUT_TRANSPARENTBG);
    ALF_AddWidget(panel, 4, 4, hwndNb2, 0, 0, ALF_LAYOUT_INHERITFONT | ALF_LAYOUT_TRANSPARENTBG);

    b = ALF_AddButton(panel, (WORD)-1, 4, 6, TEXT("Hello, World!"));
    ALF_SetWidgetLayoutMinSize(panel, b, 0, 0);

    b = ALF_AddButton(panel, (WORD)-1, 2, 8, TEXT("Multiline\r\nButton"));
    ALF_SetWidgetLayoutMinSize(panel, b, 0, 0);

    HWND hwndNb3  = CreateWindowEx(0,
                                   TEXT("BUTTON"),
                                   TEXT("Multiline\r\nButton"),
                                   WS_CHILD | WS_TABSTOP | WS_VISIBLE | BS_PUSHBUTTON | BS_MULTILINE,
                                   0, 0, 100, 100,
                                   panel,
                                   (HMENU)(WORD)-1,
                                   (HINSTANCE)GetModuleHandle(NULL),
                                   NULL);

    ALF_AddWidget(panel, 4, 8, hwndNb3, 0, 0, ALF_LAYOUT_INHERITFONT | ALF_LAYOUT_TRANSPARENTBG);

    ALF_LayoutSetRowMinSize(panel, 1, 825);
    ALF_LayoutSetRowMinSize(panel, 3, 825);
    ALF_LayoutSetRowMinSize(panel, 5, 825);
    ALF_LayoutSetRowMinSize(panel, 7, 825);
    ALF_LayoutSetRowMinSize(panel, 9, 825);
    ALF_LayoutSetColumnMinSize(panel, 1, 825);
    ALF_LayoutSetColumnMinSize(panel, 3, 825);

    ALF_LayoutSetColumnExpandNumerator(panel, 9, 1);

    ALF_PanelSetEdge(panel, BDR_RAISEDINNER);

    panel = ALF_AddPanel(outerPanel, (WORD)-1, 0, 1);

    ALF_AddButton(panel, (WORD)-1, 2, 2, TEXT("Standard"));

    HWND hwndNb4  = CreateWindowEx(0,
                                   TEXT("BUTTON"),
                                   TEXT("Standard"),
                                   WS_CHILD | WS_TABSTOP | WS_VISIBLE | BS_PUSHBUTTON,
                                   0, 0, 100, 100,
                                   panel,
                                   (HMENU)(WORD)-1,
                                   (HINSTANCE)GetModuleHandle(NULL),
                                   NULL);
    ALF_AddWidget(panel, 4, 2, hwndNb4, 5625, 1725, ALF_LAYOUT_INHERITFONT | ALF_LAYOUT_TRANSPARENTBG);

    ALF_AddButton(panel, (WORD)-1, 2, 4, TEXT("Expanding"));

    HWND hwndNb5  = CreateWindowEx(0,
                                   TEXT("BUTTON"),
                                   TEXT("Expanding"),
                                   WS_CHILD | WS_TABSTOP | WS_VISIBLE | BS_PUSHBUTTON,
                                   0, 0, 100, 100,
                                   panel,
                                   (HMENU)(WORD)-1,
                                   (HINSTANCE)GetModuleHandle(NULL),
                                   NULL);
    ALF_AddWidget(panel, 4, 4, hwndNb5, 0, 0, ALF_LAYOUT_INHERITFONT | ALF_LAYOUT_TRANSPARENTBG);

    ALF_AddButton(panel, (WORD)-1, 2, 6, TEXT("Expanding\r\nMultiline"));

    HWND hwndNb6  = CreateWindowEx(0,
                                   TEXT("BUTTON"),
                                   TEXT("Expanding\r\nMultiline"),
                                   WS_CHILD | WS_TABSTOP | WS_VISIBLE | BS_PUSHBUTTON | BS_MULTILINE,
                                   0, 0, 100, 100,
                                   panel,
                                   (HMENU)(WORD)-1,
                                   (HINSTANCE)GetModuleHandle(NULL),
                                   NULL);
    ALF_AddWidget(panel, 4, 6, hwndNb6, 0, 0, ALF_LAYOUT_INHERITFONT | ALF_LAYOUT_TRANSPARENTBG);

    ALF_LayoutSetRowMinSize(panel, 1, 825);
    ALF_LayoutSetRowMinSize(panel, 3, 825);
    ALF_LayoutSetRowMinSize(panel, 5, 825);
    ALF_LayoutSetRowMinSize(panel, 7, 825);
    ALF_LayoutSetColumnMinSize(panel, 1, 825);
    ALF_LayoutSetColumnMinSize(panel, 3, 825);

    ALF_LayoutSetColumnExpandNumerator(panel, 9, 1);
    ALF_LayoutSetRowExpandNumerator(panel, 4, 1);
    ALF_LayoutSetRowExpandNumerator(panel, 6, 1);

    ALF_PanelSetEdge(panel, BDR_RAISEDINNER);

    ALF_LayoutSetRowExpandNumerator(outerPanel, 1, 1);


    // TODO: recreate old button box
    /*HWND panel = ALF_AddPanel(win, (WORD)-1, 1, 2);
    ALF_AddButton(panel, ID_BC1, 0, 0, TEXT("1"));
    ALF_AddButton(panel, ID_BC2, 1, 0, TEXT("2"));
    ALF_AddButton(panel, ID_BC3, 2, 0, TEXT("3"));

    ALF_LayoutSetRowExpandNumerator(panel, 1, 1);

    HWND hwndBc4  = CreateWindowEx(0,
                                   TEXT("BUTTON"),
                                   TEXT("4"),
                                   WS_CHILD | WS_TABSTOP | WS_VISIBLE | BS_PUSHBUTTON,
                                   0, 0, 100, 100,
                                   panel,
                                   (HMENU)(int)ID_BC4,
                                   (HINSTANCE)GetWindowLongPtr(panel, GWLP_HINSTANCE),
                                   NULL);
    HWND hwndBc5  = CreateWindowEx(0,
                                   TEXT("BUTTON"),
                                   TEXT("5"),
                                   WS_CHILD | WS_TABSTOP | WS_VISIBLE | BS_PUSHBUTTON,
                                   0, 0, 100, 100,
                                   panel,
                                   (HMENU)(int)ID_BC5,
                                   (HINSTANCE)GetWindowLongPtr(panel, GWLP_HINSTANCE),
                                   NULL);
    EnableWindow(hwndBc5, FALSE);
    ALF_AddWidget(panel, 3, 0, hwndBc4, 1000, 0, ALF_LAYOUT_INHERITFONT);
    ALF_AddWidget(panel, 4, 0, hwndBc5, 1000, 0, ALF_LAYOUT_INHERITFONT);*/
}

static ALFPanelVTable buttonPanelVtbl = {
    buttonPanelAttach,
    commonPanelDestroy,
    commonPanelMessage,
    NULL,
    NULL,
    commonPanelPaint,
    NULL
};

static void
buttonPanelAddToNotebook(HWND hwndNotebook)
{
    HWND panel = ALF_NotebookAddTab(hwndNotebook, TEXT("Buttons"));
    CommonPanelPriv *priv = ALF_New(CommonPanelPriv, 1);
    ALF_PanelSetVTable(panel, &buttonPanelVtbl, priv);
}

/* label panel */

static void
labelPanelAttach(void *closure, HWND panel)
{
    (void)closure;

    ALF_AddLabel(panel, (WORD)-1, 0, 2, TEXT("N&ormal"));
    HWND l = ALF_AddLabel(panel, (WORD)-1, 0, 4, TEXT("Disabled"));
    EnableWindow(l, FALSE);

    ALF_AddEdit(panel, (WORD)-1, 3, 2, TEXT("Baseline Comparison"));
    l = ALF_AddLabel(panel, (WORD)-1, 3, 4, TEXT("Left Comparison"));
    ALF_LabelSetStyle(l, ALF_LABEL_ALIGN_LEFT_LIKE_EDIT | ALF_LABEL_ALIGN_TOP);

    l = ALF_AddLabel(panel, (WORD)-1, 0, 6, TEXT("Colored"));
    ALF_SetBackgroundColor(l, ALF_COLOR_RGB(0, 0, 255));
    ALF_SetTextColor(l, ALF_COLOR_RGB(255, 255, 255));

    // TODO: demo right, center, bottom alignment
}

static ALFPanelVTable labelPanelVtbl = {
    labelPanelAttach,
    commonPanelDestroy,
    commonPanelMessage,
    NULL,
    NULL,
    commonPanelPaint,
    NULL
};

static void
labelPanelAddToNotebook(HWND hwndNotebook)
{
    HWND panel = ALF_NotebookAddTab(hwndNotebook, TEXT("Label"));
    CommonPanelPriv *priv = ALF_New(CommonPanelPriv, 1);
    ALF_PanelSetVTable(panel, &labelPanelVtbl, priv);
}

/* combo box panel */

static void
comboPanelAttach(void *closure, HWND panel)
{
    (void)closure;

    ALF_AddLabel(panel, (WORD)-1, 0, 2, TEXT("&Editable Combo Box:"));
    HWND hwndCombo1 = ALF_AddEditableComboBox(panel, ID_COMBO1, 2, 2, TEXT("Hello!"));

    ALF_ComboBoxInsertString(hwndCombo1, 0, TEXT("Hello World!"));
    ALF_ComboBoxInsertString(hwndCombo1, -1, TEXT("Goodbye World!"));
    ALF_ComboBoxInsertString(hwndCombo1, 1, TEXT("The quick brown fox jumps over the lazy dog"));

    ALF_AddLabel(panel, (WORD)-1, 0, 4, TEXT("Selection-Only Combo Box:"));
    HWND hwndCombo2 = ALF_AddSelectionOnlyComboBox(panel, ID_COMBO2, 2, 4);
    ALF_AddButton(panel, ID_BTNCOMBOCLEAR, 4, 4, TEXT("Clear"));

    ALF_ComboBoxAddString(hwndCombo2, TEXT("Hello World!"));
    ALF_ComboBoxAddString(hwndCombo2, TEXT("Goodbye World!"));
    ALF_ComboBoxAddString(hwndCombo2, TEXT("The quick brown fox jumps over the lazy dog"));

    ALF_AddLabel(panel, ID_LBLCOMBOTEXT, 2, 6, TEXT("[ComboBox2 value]"));

    ALF_ComboBoxSetText(hwndCombo2, TEXT("Goodbye World!"));

    ALF_LayoutSetRowMinSize(panel, 1, 825);
    ALF_LayoutSetRowMinSize(panel, 3, 825);
    ALF_LayoutSetRowMinSize(panel, 5, 825);
    ALF_LayoutSetRowMinSize(panel, 7, 825);
    ALF_LayoutSetColumnMinSize(panel, 1, 825);
    ALF_LayoutSetColumnMinSize(panel, 3, 825);
    ALF_LayoutSetColumnExpandNumerator(panel, 2, 1);
    ALF_LayoutSetRowExpandNumerator(panel, 9, 1);
}

static ALFPanelVTable comboPanelVtbl = {
    comboPanelAttach,
    commonPanelDestroy,
    commonPanelMessage,
    NULL,
    NULL,
    commonPanelPaint,
    NULL
};

static void
comboPanelAddToNotebook(HWND hwndNotebook)
{
    HWND panel = ALF_NotebookAddTab(hwndNotebook, TEXT("Combo Box"));
    CommonPanelPriv *priv = ALF_New(CommonPanelPriv, 1);
    ALF_PanelSetVTable(panel, &comboPanelVtbl, priv);
}

/* notebook panel */

static void
notebookPanelAttach(void *closure, HWND panel)
{
    (void)closure;

    HWND hwndTab = ALF_AddNotebook(panel, (WORD)-1, 0, 0);
    HWND hwndTabPanel0 = ALF_NotebookAddTab(hwndTab, TEXT("Notebook Debug"));
    HWND hwndTabPanel1 = ALF_NotebookAddTab(hwndTab, TEXT("Tab 1"));
    HWND hwndTabPanel2 = ALF_NotebookAddTab(hwndTab, TEXT("Tab 2"));
    HWND hwndTabPanel3 = ALF_NotebookAddTab(hwndTab, TEXT("Another tab"));
    ALF_NotebookAddTab(hwndTab, TEXT("Yet another empty tab"));

    ALF_SetBackgroundColor(hwndTabPanel3, ALF_COLOR_RGB(0, 255, 0));

    ALF_AddButton(hwndTabPanel0, ID_B_TABBGSOLID, 0, 0, TEXT("Solid tab background"));
    ALF_AddButton(hwndTabPanel0, ID_B_TABBGTEXTURE, 0, 1, TEXT("Textured tab background"));
    ALF_LayoutSetRowExpandNumerator(hwndTabPanel0, 2, 1);
    ALF_LayoutSetColumnExpandNumerator(hwndTabPanel0, 1, 1);

    ALF_AddLabel(hwndTabPanel1, (WORD)-1, 0, 0, TEXT("Hello World!"));
    ALF_AddLabel(hwndTabPanel2, (WORD)-1, 0, 0, TEXT("Goodbye, &World!"));
    ALF_AddEdit(hwndTabPanel2, (WORD)-1, 1, 0, TEXT("lol"));

    ALF_AddLabel(hwndTabPanel1, (WORD)-1, 0, 1, TEXT("Blabla"));
    ALF_LayoutSetRowExpandNumerator(hwndTabPanel1, 1, 1);
    ALF_AddLabel(hwndTabPanel1, (WORD)-1, 0, 2, TEXT("No 3"));
    ALF_AddEdit(hwndTabPanel1, (WORD)-1, 0, 3, TEXT("Dummy"));

    ALF_SetText(hwndTabPanel2, TEXT("Panel Text Demo Test Test Test"));
}

static ALFPanelVTable notebookPanelVtbl = {
    notebookPanelAttach,
    commonPanelDestroy,
    commonPanelMessage,
    NULL,
    NULL,
    commonPanelPaint,
    NULL
};

static void
notebookPanelAddToNotebook(HWND hwndNotebook)
{
    HWND panel = ALF_NotebookAddTab(hwndNotebook, TEXT("Notebook"));
    CommonPanelPriv *priv = ALF_New(CommonPanelPriv, 1);
    ALF_PanelSetVTable(panel, &notebookPanelVtbl, priv);
}

/* checkbox panel */

static void
checkboxPanelAttach(void *closure, HWND panel)
{
    (void)closure;

    ALF_AddCheckbox(panel, (WORD)-1, 1, 2, TEXT("Some Checkbox with a very very really very very long text"));

    HWND l = ALF_AddLabel(panel, (WORD)-1, 1, 4, TEXT("Width checker"));
    ALF_SetBackgroundColor(l, ALF_COLOR_RGB(0, 0, 255));
    ALF_SetTextColor(l, ALF_COLOR_RGB(255, 255, 255));

    ALF_LayoutSetRowMinSize(panel, 1, 825);
    ALF_LayoutSetRowMinSize(panel, 3, 825);
    ALF_LayoutSetColumnExpandNumerator(panel, 9, 1);
    ALF_LayoutSetRowExpandNumerator(panel, 9, 1);
}

static ALFPanelVTable checkboxPanelVtbl = {
    checkboxPanelAttach,
    commonPanelDestroy,
    commonPanelMessage,
    NULL,
    NULL,
    commonPanelPaint,
    NULL
};

static void
checkboxPanelAddToNotebook(HWND hwndNotebook)
{
    HWND panel = ALF_NotebookAddTab(hwndNotebook, TEXT("Checkbox"));
    CommonPanelPriv *priv = ALF_New(CommonPanelPriv, 1);
    ALF_PanelSetVTable(panel, &checkboxPanelVtbl, priv);
}

/* groupbox panel */

static void
groupboxPanelAttach(void *closure, HWND panel)
{
    (void)closure;

    ALF_AddLabel(panel, (WORD)-1, 1, 1, TEXT("ALF"));
    ALF_AddLabel(panel, (WORD)-1, 3, 1, TEXT("native"));

    HWND hwndGb0 = ALF_AddGroupBox(panel, (WORD)-1, 1, 3, TEXT("Test Bo&x"));

    HWND hwndGb1  = CreateWindowEx(WS_EX_TRANSPARENT,
                                   TEXT("BUTTON"),
                                   TEXT("Test Box"),
                                   WS_CHILD | WS_TABSTOP | WS_VISIBLE | BS_GROUPBOX,
                                   0, 0, 100, 100,
                                   panel,
                                   (HMENU)(WORD)-1,
                                   (HINSTANCE)GetModuleHandle(NULL),
                                   NULL);
    ALF_AddWidget(panel, 3, 3, hwndGb1, 0, 0, ALF_LAYOUT_INHERITFONT | ALF_LAYOUT_TRANSPARENTBG);

    ALF_AddEdit(hwndGb0, (WORD)-1, 0, 0, TEXT("Dummy"));

    HWND hwndGb3 = ALF_AddGroupBox(panel, (WORD)-1, 1, 5, TEXT("Disabled"));
    EnableWindow(hwndGb3, FALSE);

    HWND hwndGb2  = CreateWindowEx(WS_EX_TRANSPARENT,
                                   TEXT("BUTTON"),
                                   TEXT("Disabled"),
                                   WS_CHILD | WS_TABSTOP | WS_VISIBLE | BS_GROUPBOX,
                                   0, 0, 100, 100,
                                   panel,
                                   (HMENU)(WORD)-1,
                                   (HINSTANCE)GetModuleHandle(NULL),
                                   NULL);
    ALF_AddWidget(panel, 3, 5, hwndGb2, 0, 0, ALF_LAYOUT_INHERITFONT | ALF_LAYOUT_TRANSPARENTBG);
    EnableWindow(hwndGb2, FALSE);

    ALF_LayoutSetRowMinSize(panel, 0, 825);
    ALF_LayoutSetRowMinSize(panel, 2, 825);
    ALF_LayoutSetRowMinSize(panel, 4, 825);
    ALF_LayoutSetRowMinSize(panel, 6, 825);
    ALF_LayoutSetColumnMinSize(panel, 0, 825);
    ALF_LayoutSetColumnMinSize(panel, 2, 825);
    ALF_LayoutSetColumnMinSize(panel, 4, 825);
    ALF_LayoutSetRowExpandNumerator(panel, 3, 1);
    ALF_LayoutSetRowExpandNumerator(panel, 5, 1);
    ALF_LayoutSetColumnExpandNumerator(panel, 1, 1);
    ALF_LayoutSetColumnExpandNumerator(panel, 3, 1);
}

static ALFPanelVTable groupboxPanelVtbl = {
    groupboxPanelAttach,
    commonPanelDestroy,
    commonPanelMessage,
    NULL,
    NULL,
    commonPanelPaint,
    NULL
};

static void
groupboxPanelAddToNotebook(HWND hwndNotebook)
{
    HWND panel = ALF_NotebookAddTab(hwndNotebook, TEXT("GroupBox"));
    CommonPanelPriv *priv = ALF_New(CommonPanelPriv, 1);
    ALF_PanelSetVTable(panel, &groupboxPanelVtbl, priv);
}

int CALLBACK
#ifdef UNICODE
wWinMain
#else
WinMain
#endif
(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPTSTR lpCmdLine, int nCmdShow)
{
    (void)hPrevInstance;
    (void)lpCmdLine;
    (void)nCmdShow;

    ALF_SetDpiAwareness(ALF_DPI_AWARENESS_PER_MONITOR_AWARE_V2);

    red = CreateSolidBrush(RGB(255,0,0));
    green = CreateSolidBrush(RGB(0,255,0));
    blue = CreateSolidBrush(RGB(0,0,255));
    white = CreateSolidBrush(RGB(255,255,255));

    if (LOBYTE(LOWORD(GetVersion())) >= 4) {
        HMODULE hMsimg32 = LoadLibraryA("msimg32.dll");
        if (hMsimg32) {
            *((void**)&fnGradientFill) = (void*)GetProcAddress(hMsimg32, "GradientFill");
        }
    }

    ALFWindowClassParams cparams;
    ZeroMemory(&cparams, sizeof(cparams));

    //cparams.className = TEXT("DummyClass");
    cparams.vtbl.command = handleCommand;

    ALF_Initialize();

    LPCTSTR clazz = ALF_RegisterWindowClass(hInstance, &cparams);
    if (!clazz)
        MessageBox(0, TEXT("couldn't create window class!"), 0, MB_ICONHAND|MB_OK);

    HWND win = ALF_InstantiateWindow(hInstance, clazz, NULL, NULL);
    if (!win)
        MessageBox(0, TEXT("couldn't create main window!"), 0, MB_ICONHAND|MB_OK);

    HWND hwndNtbk = ALF_AddNotebook(win, ID_NOTEBOOK, 0, 0);
    buttonPanelAddToNotebook(hwndNtbk);
    labelPanelAddToNotebook(hwndNtbk);
    comboPanelAddToNotebook(hwndNtbk);
    notebookPanelAddToNotebook(hwndNtbk);
    checkboxPanelAddToNotebook(hwndNtbk);
    groupboxPanelAddToNotebook(hwndNtbk);

    ALF_SetDefaultButton(win, ID_HELLO);

    ALF_ResizeWindow(win, 1, 1);

    HMENU mainmenu = CreateMenu();
    HMENU filemenu = CreateMenu();
    HMENU helpmenu = CreateMenu();
    HMENU bgmenu   = CreateMenu();

    AppendMenu(filemenu, MF_STRING, ID_HELLO, TEXT("Hello"));
    AppendMenu(filemenu, MF_SEPARATOR, 0, 0);
    AppendMenu(filemenu, MF_STRING, IDM_FILE_CLOSE, TEXT("&Close\tAlt+F4"));

    AppendMenu(helpmenu, MF_STRING, IDM_HELP_ABOUT, TEXT("&About"));

    AppendMenu(bgmenu, MF_STRING, IDM_BACKGROUND_INHERIT, TEXT("(Default)"));
    AppendMenu(bgmenu, MF_STRING, IDM_BACKGROUND_GRADIENT, TEXT("Gradient"));
    AppendMenu(bgmenu, MF_STRING, IDM_BACKGROUND_BLUE, TEXT("Blue"));
    AppendMenu(bgmenu, MF_STRING, IDM_BACKGROUND_GREEN, TEXT("Green"));

    AppendMenu(mainmenu, MF_POPUP, (UINT_PTR)filemenu, TEXT("&File"));
    AppendMenu(mainmenu, MF_POPUP, (UINT_PTR)bgmenu, TEXT("Background"));
    AppendMenu(mainmenu, MF_POPUP, (UINT_PTR)helpmenu, TEXT("&Help"));

    SetMenu(win, mainmenu);

    ALF_ShowModal(win);

    ALF_DestroyWindow(win);
    ALF_UnregisterWindowClass(hInstance, clazz);
    ALF_UnInitialize();

    return 0;
}

void WINAPI
_entry(void)
{
    ExitProcess((UINT)
#ifdef UNICODE
wWinMain
#else
WinMain
#endif
        (GetModuleHandle(NULL), NULL, GetCommandLine(), SW_SHOW));
}