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#include "./loginStatus.h"
#include "./common.h"
LoginStatus::LoginStatus(HWND hTarget)
: ref(1), hwnd(hTarget)
{
InitializeCriticalSection(&lock);
}
LoginStatus::~LoginStatus()
{
DeleteCriticalSection(&lock);
}
HRESULT LoginStatus::CreateInstance(HWND hTarget, LoginStatus **instance)
{
if (NULL == instance)
return E_POINTER;
*instance = new LoginStatus(hTarget);
if (NULL == *instance) return E_OUTOFMEMORY;
return S_OK;
}
ULONG LoginStatus::AddRef()
{
return InterlockedIncrement((LONG*)&ref);
}
ULONG LoginStatus::Release()
{
if (0 == ref)
return ref;
LONG r = InterlockedDecrement((LONG*)&ref);
if (0 == r)
delete(this);
return r;
}
UINT LoginStatus::Add(BSTR status)
{
EnterCriticalSection(&lock);
Record r;
r.cookie = GetNextCookie();
r.text = status;
list.push_back(r);
LeaveCriticalSection(&lock);
UpdateWindowText();
return r.cookie;
}
BOOL LoginStatus::Set(UINT cookie, BSTR status)
{
BOOL foundOk = FALSE;
EnterCriticalSection(&lock);
size_t index = list.size();
while(index--)
{
if (cookie == list[index].cookie)
{
SysFreeString(list[index].text);
list[index].text = status;
foundOk = TRUE;
break;
}
}
LeaveCriticalSection(&lock);
UpdateWindowText();
return foundOk;
}
void LoginStatus::Remove(UINT cookie)
{
EnterCriticalSection(&lock);
size_t index = list.size();
while(index--)
{
if (cookie == list[index].cookie)
{
SysFreeString(list[index].text);
list.eraseAt(index);
break;
}
}
LeaveCriticalSection(&lock);
UpdateWindowText();
}
BOOL LoginStatus::AttachWindow(HWND hTarget)
{
DetachWindow();
hwnd = hTarget;
UpdateWindowText();
return TRUE;
}
BOOL LoginStatus::DetachWindow()
{
hwnd = NULL;
return TRUE;
}
UINT LoginStatus::GetNextCookie()
{
size_t i, count;
count = list.size();
UINT cookie = (UINT)count;
do
{
for (i = 0; i < count; i++)
{
if (list[i].cookie == cookie)
{
cookie++;
break;
}
}
} while(i != count);
return cookie;
}
BOOL LoginStatus::UpdateWindowText()
{
EnterCriticalSection(&lock);
BOOL resultOk = FALSE;
if (NULL != hwnd)
{
BSTR text = NULL;
size_t index = list.size();
while(index--)
{
if (NULL != list[index].text && L'\0' != list[index].text)
{
text = list[index].text;
break;
}
}
resultOk = (BOOL)SendMessage(hwnd, WM_SETTEXT, 0, (LPARAM)text);
}
LeaveCriticalSection(&lock);
return resultOk;
}
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