#pragma once

#include "alf.h"
#include "alflist.h"

typedef struct {
    ALFListHeader list;
    HWND hwnd;
    UINT x;
    UINT y;
    UINT cptWidth;
    UINT cptHeight;
    UINT cptMarginTop;
    UINT cptMarginRight;
    UINT cptMarginBottom;
    UINT cptMarginLeft;
    DWORD flags;
} ALFWidgetPriv;

typedef struct {
    int minWidth;
    int allocatedWidth;
    int allocatedPosition;
    int expand : 1;
} ALFLayoutRowOrColumn;

#define ALF_LAYOUT_NEED_RECALC   ((DWORD)1)
#define ALF_LAYOUT_NEED_REAPPLY  ((DWORD)2)

typedef struct {
    ALFListHeader         widgets;
    ALFLayoutRowOrColumn *columns;
    ALFLayoutRowOrColumn *rows;
    int                   nColumns;
    int                   nRows;
    int                   totalMinWidth;
    int                   totalMinHeight;
    int                   expandoColumnCount;
    int                   expandoRowCount;
    DWORD                 layoutValididityFlags;
} ALFLayout;

void
ALF_Layout_Init(ALFLayout *layout);

void
ALF_Layout_Clear(ALFLayout *layout);

void
ALF_Layout_GetMinSize(ALFLayout *layout, HWND window, SIZE *size);

void
ALF_Layout_Apply(ALFLayout *layout, HWND window);

void
ALF_Layout_AddWidget(ALFLayout *layout, HWND window, const ALFWidgetLayoutParams *params);

BOOL
ALF_Layout_RemoveWidget(ALFLayout *layout, HWND window, HWND widget, BOOL destroy);

BOOL
ALF_Layout_SetWidgetParams(ALFLayout *layout, HWND window, const ALFWidgetLayoutParams *params, HWND widget);

BOOL
ALF_Layout_GetWidgetParams(ALFLayout *layout, ALFWidgetLayoutParams *params, HWND widget);

BOOL
ALF_Layout_HandleMessage(ALFLayout *layout, HWND window, UINT msg, WPARAM wparam, LPARAM lparam, LRESULT *ret);

HWND
ALF_Layout_WidgetAtPos(ALFLayout *layout, UINT x, UINT y);

void
ALF_Layout_Invalidate(ALFLayout *layout, HWND window);

BOOL
ALF_Layout_Validate(ALFLayout *layout, HWND window);