#include <windows.h>
#include <commctrl.h>
#include <uxtheme.h>

#include "resource.h"
#include "defs.h"

extern HFONT g_hfNormal;
extern HWND g_hWnd;
static LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

void
ListView::Create(HMENU hMenu, DWORD dwStyle)
{
	m_hWnd = CreateWindowEx(
	    WS_EX_CLIENTEDGE,
	    WC_LISTVIEW,
	    TEXT(""),
	    dwStyle
	    |WS_CHILD|WS_VISIBLE|WS_VSCROLL|WS_TABSTOP|LVS_REPORT|LVS_SHOWSELALWAYS,
	    0, 0, 0, 0,
	    g_hWnd, hMenu, GetModuleHandle(NULL), this
	);

	if (SetProp(m_hWnd, TEXT("this"), (HANDLE)this))
		m_prevProc = (WNDPROC)SetWindowLongPtr(m_hWnd,
		    GWLP_WNDPROC, (LONG_PTR)::WndProc);

	ListView_SetExtendedListViewStyle(m_hWnd, LVS_EX_FULLROWSELECT);

	SendMessage(m_hWnd, WM_SETFONT, (WPARAM)g_hfNormal, MAKELPARAM(FALSE, 0));
}

/* Naively calculate height of list view. */
int
ListView::Height(int bHeader)
{
	int iCount;
	iCount = ListView_GetItemCount(m_hWnd);
	return iCount? Dpi(bHeader? 27: 4)+iCount*Dpi(19): 0;
}

HWND
ListView::HWnd()
{
	return m_hWnd;
}

LRESULT CALLBACK
ListView::WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
	switch (uMsg) {
	case WM_NOTIFY:
		switch (((LPNMHDR)lParam)->code) {
		case HDN_ENDTRACK:
			UpdateLayout();
			return TRUE;
		}
		break;
	}

	return CallWindowProc(m_prevProc, hWnd, uMsg, wParam, lParam);
}

static LRESULT CALLBACK
WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
	switch (uMsg) {
	case WM_DESTROY:
		RemoveProp(hWnd, TEXT("this"));
		break;
	}

	ListView *lpThis = (ListView *)GetProp(hWnd, TEXT("this"));
	return lpThis? lpThis->WndProc(hWnd, uMsg, wParam, lParam): FALSE;
}