{

DECLARE_CLASS_SIMPLE( ProgressBox, Frame );

public:

// title - Text to be displayed in the title bar of the window

// text - Text message in the message box

// parent - parent panel of the message box, by default it has no parent.

ProgressBox(const char *title, const char *text, const char *pszUnknownTimeString, Panel *parent = NULL);

ProgressBox(const wchar_t *wszTitle, const wchar_t *wszText, const wchar_t *wszUnknownTimeString, Panel *parent = NULL);

~ProgressBox();

// Put the message box into a modal state

virtual void DoModal(Frame *pFrameOver = NULL);

// make the message box appear and in a modeless state

virtual void ShowWindow(Frame *pFrameOver = NULL);

// updates progress bar, range [0, 1]

virtual void SetProgress(float progress);

// sets the info text

virtual void SetText(const char *text);

// toggles visibility of the close box.

virtual void SetCancelButtonVisible(bool state);

// toggles the enabled state of the cancel button (for if it needs to be disabled part way through a process)

virtual void SetCancelButtonEnabled(bool state);

/* custom messages:

"ProgressBoxCancelled"

sent if the user pressed the cancel button (must be enabled & visible for this to happen)

*/

protected:

virtual void PerformLayout();

virtual void OnClose();

virtual void OnCloseFrameButtonPressed();

virtual void ApplySchemeSettings(IScheme *pScheme);

virtual void OnThink();

virtual void OnCommand(const char *command);

virtual void OnTick();

// called when the update has been cancelled

virtual void OnCancel();

private:

MESSAGE_FUNC( OnShutdownRequest, "ShutdownRequest" );

void Init();

void UpdateTitle();

Label *m_pMessageLabel;

ProgressBar *m_pProgressBar;

Button *m_pCancelButton;

wchar_t m_wszTitleString[128];

wchar_t m_wcsInfoString[128];

wchar_t m_wszUnknownTimeString[128];

float m_flFirstProgressUpdate;

float m_flLastProgressUpdate;

float m_flCurrentProgress;