/*
	Copyright (C) 2008, kobake

	This software is provided 'as-is', without any express or implied
	warranty. In no event will the authors be held liable for any damages
	arising from the use of this software.

	Permission is granted to anyone to use this software for any purpose,
	including commercial applications, and to alter it and redistribute it
	freely, subject to the following restrictions:

		1. The origin of this software must not be misrepresented;
		   you must not claim that you wrote the original software.
		   If you use this software in a product, an acknowledgment
		   in the product documentation would be appreciated but is
		   not required.

		2. Altered source versions must be plainly marked as such,
		   and must not be misrepresented as being the original software.

		3. This notice may not be removed or altered from any source
		   distribution.
*/

#include "StdAfx.h"
#include "DLLSHAREDATA.h"
#include "_main/CMutex.h"
#include "dlg/CDlgCancel.h"
#include "uiparts/CWaitCursor.h"
#include "util/os.h"
#include "util/window.h"
#include "sakura_rc.h"

//GetDllShareData用グローバル変数
DLLSHAREDATA* g_theDLLSHAREDATA = NULL;

static CMutex g_cKeywordMutex( FALSE, GSTR_MUTEX_SAKURA_KEYWORD );

CShareDataLockCounter::CShareDataLockCounter(){
	LockGuard<CMutex> guard( g_cKeywordMutex );
	assert_warning( 0 <= GetDllShareData().m_nLockCount );
	GetDllShareData().m_nLockCount++;
}

CShareDataLockCounter::~CShareDataLockCounter(){
	LockGuard<CMutex> guard( g_cKeywordMutex );
	GetDllShareData().m_nLockCount--;
	assert_warning( 0 <= GetDllShareData().m_nLockCount );
}

int CShareDataLockCounter::GetLockCounter(){
	LockGuard<CMutex> guard( g_cKeywordMutex );
	assert_warning( 0 <= GetDllShareData().m_nLockCount );
	return GetDllShareData().m_nLockCount;
}


class CLockCancel: public CDlgCancel{
public:
	virtual BOOL OnInitDialog( HWND hwnd, WPARAM wParam, LPARAM lParam ){
		BOOL ret = CDlgCancel::OnInitDialog(hwnd, wParam, lParam);
		HWND hwndCancel = GetHwnd();
		HWND hwndMsg = ::GetDlgItem(hwndCancel, IDC_STATIC_MSG);
		HWND hwndCancelButton = ::GetDlgItem(hwndCancel, IDCANCEL);
		HWND hwndKensuu = ::GetDlgItem(hwndCancel, IDC_STATIC_KENSUU);
		LPCTSTR msg = LS(STR_PRINT_WAITING);
		CTextWidthCalc calc(hwndMsg);
		calc.SetTextWidthIfMax(msg);
		RECT rc;
		GetItemClientRect(IDC_STATIC_MSG, rc);
		rc.right = rc.left + calc.GetCx() + 2;
		::MoveWindow(hwndMsg, rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top, FALSE);
		::SetWindowText(hwndMsg, msg);
		::ShowWindow(hwndCancelButton, SW_HIDE);
		::ShowWindow(hwndKensuu, SW_HIDE);
		if( GetComctl32Version() >= PACKVERSION(6, 0) ){
			// マーキーにする(CommCtrl 6.0以上)
			HWND hwndProgress = GetItemHwnd(IDC_PROGRESS);
			// スタイル変更+メッセージでないと機能しない
			LONG_PTR style = ::GetWindowLongPtr(hwndProgress, GWL_STYLE);
			::SetWindowLongPtr(hwndProgress, GWL_STYLE, style | PBS_MARQUEE);
			Progress_SetMarquee(hwndProgress, TRUE, 100);
		}else{
			HWND hwndProgress = ::GetDlgItem(hwndCancel, IDC_PROGRESS);
			::ShowWindow(hwndProgress, SW_HIDE);
		}
		return ret;
	}
};

// countが0だったらLockして返す
static int GetCountIf0Lock( CShareDataLockCounter** ppLock )
{
	LockGuard<CMutex> guard(g_cKeywordMutex);
	int count = GetDllShareData().m_nLockCount;
	if( count <= 0 ){
		if( ppLock ){
			*ppLock = new CShareDataLockCounter();
		}
	}
	return count;
}

void CShareDataLockCounter::WaitLock( HWND hwndParent, CShareDataLockCounter** ppLock ){
	if( 0 < GetCountIf0Lock(ppLock) ){
		DWORD dwTime = ::GetTickCount();
		CWaitCursor cWaitCursor(hwndParent);
		CLockCancel* pDlg = NULL;
		HWND hwndCancel = NULL;
		::EnableWindow(hwndParent, FALSE);
		while( 0 < GetCountIf0Lock(ppLock) ){
			DWORD dwResult = MsgWaitForMultipleObjects(0, NULL, FALSE, 100, QS_ALLEVENTS);
			if( dwResult == 0xFFFFFFFF ){
				break;
			}
			if( !BlockingHook( hwndCancel ) ){
				break;
			}
			if( NULL == pDlg ){
				DWORD dwTimeNow = ::GetTickCount();
				if( 2000 < dwTimeNow - dwTime ){
					pDlg = new CLockCancel();
					hwndCancel = pDlg->DoModeless(::GetModuleHandle( NULL ), hwndParent, IDD_OPERATIONRUNNING);
				}
			}
		}
		if( pDlg ){
			pDlg->CloseDialog(0);
			delete pDlg;
		}
		::EnableWindow(hwndParent, TRUE);
	}
}