C++ Panel::RequestFocus方法代码示例

//-----------------------------------------------------------------------------
// Purpose: Make the first buttons page get displayed when the menu becomes visible
//-----------------------------------------------------------------------------
void CDODTeamMenu::SetVisible( bool state )
{
	BaseClass::SetVisible( state );

	for( int i = 0; i< GetChildCount(); i++ ) // get all the buy buttons to performlayout
	{
		CDODMouseOverButton<EditablePanel> *button = dynamic_cast<CDODMouseOverButton<EditablePanel> *>(GetChild(i));
		if ( button )
		{
			if( button == m_pFirstButton && state == true )
				button->ShowPage();
			else
				button->HidePage();

			button->InvalidateLayout();
		}
	}

	if ( state )
	{
		Panel *pAutoButton = FindChildByName( "autobutton" );
		if ( pAutoButton )
		{
			pAutoButton->RequestFocus();
		}
	}
}

//-----------------------------------------------------------------------------
// Purpose: Pass the focus down onto the last used panel
//-----------------------------------------------------------------------------
void EditablePanel::OnSetFocus()
{
	Panel *focus = m_NavGroup.GetCurrentFocus();
	if (focus && focus != this)
	{
		focus->RequestFocus();
	}
	else
	{
		focus = m_NavGroup.GetDefaultPanel();
		if (focus)
		{
			focus->RequestFocus();
			focus->OnSetFocus();
		}
	}

	BaseClass::OnSetFocus();
}

//-----------------------------------------------------------------------------
// Purpose: 
//-----------------------------------------------------------------------------
void CSDKTeamMenu::SetVisible(bool state)
{
	BaseClass::SetVisible(state);

	if ( state )
	{
		Panel *pAutoButton = FindChildByName( "autobutton" );
		if ( pAutoButton )
		{
			pAutoButton->RequestFocus();
		}
	}
}

//-----------------------------------------------------------------------------
// Purpose: 
//---------------------------------------------------------------------------
void CTFTextWindow::SetVisible( bool state )
{
	BaseClass::SetVisible( state );

	if ( state )
	{
		Panel *pOK = FindChildByName( "ok" );
		if ( pOK )
		{
			pOK->RequestFocus();
		}
	}
}

//-----------------------------------------------------------------------------
// Purpose: Activates the dialog
//-----------------------------------------------------------------------------
void CDialogUserInfo::Open()
{
	Activate();
	Panel *panel = FindChildByName("OK");

	if (panel)
	{
		panel->RequestFocus();
	}
	RequestFocus();

	const char *firstName = GetDoc()->GetBuddy(m_iUserID)->Data()->GetString("FirstName", NULL);
	if (!firstName)
	{
		ServerSession().RequestUserInfoFromServer(m_iUserID);
	}
}

//-----------------------------------------------------------------------------
// Purpose: 
//-----------------------------------------------------------------------------
void WizardPanel::ResetKeyFocus()
{
	// set the focus on the default
	FocusNavGroup &navGroup = GetFocusNavGroup();
	Panel *def = navGroup.GetDefaultPanel();
	if (def)
	{
		if (def->IsEnabled() && def->IsVisible())
		{
			def->RequestFocus();
		}
		else
		{
			def->RequestFocusNext();
		}
	}

	ResetDefaultButton();
}

//-----------------------------------------------------------------------------
// Purpose: 
//-----------------------------------------------------------------------------
void CTFTextWindow::Update()
{
	CTFLabel *pTitle = dynamic_cast<CTFLabel *>( FindChildByName( "TFMessageTitle" ) );
	if ( pTitle )
	{
		pTitle->SetText( m_szTitle );
	}

	if ( m_pTFTextMessage )
	{
		m_pTFTextMessage->SetVisible( false );
	}

	BaseClass::Update();

	Panel *pOK = FindChildByName( "ok" );
	if ( pOK )
	{
		pOK->RequestFocus();
	}
}

//-----------------------------------------------------------------------------
// Purpose: Sets the focus to the previous panel in the tab order
// Input  : *panel - panel currently with focus
//-----------------------------------------------------------------------------
bool FocusNavGroup::RequestFocusPrev(VPANEL panel)
{
	if(panel==NULL)
		return false;

	_currentFocus = NULL;
	int newPosition = 9999999;
	if (panel)
	{
		newPosition = ipanel()->GetTabPosition(panel);
	}

	bool bFound = false;
	bool bRepeat = true;
	Panel *best = NULL;
	while (1)
	{
		newPosition--;
		if (newPosition > 0)
		{
			int bestPosition = 0;

			// look for the next tab position
			for (int i = 0; i < _mainPanel->GetChildCount(); i++)
			{
				Panel *child = _mainPanel->GetChild(i);
				if (child && child->IsVisible() && child->IsEnabled() && child->GetTabPosition())
				{
					int tabPosition = child->GetTabPosition();
					if (tabPosition == newPosition)
					{
						// we've found the right tab
						best = child;
						bestPosition = newPosition;

						// don't loop anymore since we've found the correct panel
						break;
					}
					else if (tabPosition < newPosition && tabPosition > bestPosition)
					{
						// record the match since this is the closest so far
						bestPosition = tabPosition;
						best = child;
					}
				}
			}

			if (!bRepeat)
				break;

			if (best)
				break;
		}
		else
		{
			// reset new position for next loop
			newPosition = 9999999;
		}

		// haven't found an item

		if (!_topLevelFocus)
		{
			// check to see if we should push the focus request up
			if (_mainPanel->GetVParent() && _mainPanel->GetVParent() != surface()->GetEmbeddedPanel())
			{
				// we're not a top level panel, so forward up the request instead of looping
				if (ipanel()->RequestFocusPrev(_mainPanel->GetVParent(), _mainPanel->GetVPanel()))
				{
					bFound = true;
					SetCurrentDefaultButton(NULL);
					break;
				}
			}
		}

		// not found an item, loop back
		newPosition = 9999999;
		bRepeat = false;
	}

	if (best)
	{
		_currentFocus = best->GetVPanel();
		best->RequestFocus(-1);
		bFound = true;

        if (!CanButtonBeDefault(best->GetVPanel()))
        {
            if (_defaultButton)
            {
                SetCurrentDefaultButton(_defaultButton);
            }
			else
			{
				SetCurrentDefaultButton(NULL);
//.........这里部分代码省略.........

//-----------------------------------------------------------------------------
// Purpose: Sets the focus to the previous panel in the tab order
// Input  : *panel - panel currently with focus
//-----------------------------------------------------------------------------
bool FocusNavGroup::RequestFocusNext(VPANEL panel)
{
	// basic recursion guard, in case user has set up a bad focus hierarchy
	static int stack_depth = 0;
	stack_depth++;

	_currentFocus = NULL;
	int newPosition = 0;
	if (panel)
	{
		newPosition = ipanel()->GetTabPosition(panel);
	}

	bool bFound = false;
	bool bRepeat = true;
	Panel *best = NULL;
	while (1)
	{
		newPosition++;
		int bestPosition = 999999;

		// look for the next tab position
		for (int i = 0; i < _mainPanel->GetChildCount(); i++)
		{
			Panel *child = _mainPanel->GetChild(i);
			if ( !child )
				continue;

			if (child && child->IsVisible() && child->IsEnabled() && child->GetTabPosition())
			{
				int tabPosition = child->GetTabPosition();
				if (tabPosition == newPosition)
				{
					// we've found the right tab
					best = child;
					bestPosition = newPosition;

					// don't loop anymore since we've found the correct panel
					break;
				}
				else if (tabPosition > newPosition && tabPosition < bestPosition)
				{
					// record the match since this is the closest so far
					bestPosition = tabPosition;
					best = child;
				}
			}
		}

		if (!bRepeat)
			break;

		if (best)
			break;

		// haven't found an item

		// check to see if we should push the focus request up
		if (!_topLevelFocus)
		{
			if (_mainPanel->GetVParent() && _mainPanel->GetVParent() != surface()->GetEmbeddedPanel())
			{
				// we're not a top level panel, so forward up the request instead of looping
				if (stack_depth < 15)
				{
					if (ipanel()->RequestFocusNext(_mainPanel->GetVParent(), _mainPanel->GetVPanel()))
					{
						bFound = true;
						SetCurrentDefaultButton(NULL);
						break;
					}

					// if we find one then we break, otherwise we loop
				}
			}
		}
		
		// loop back
		newPosition = 0;
		bRepeat = false;
	}

	if (best)
	{
		_currentFocus = best->GetVPanel();
		best->RequestFocus(1);
		bFound = true;

        if (!CanButtonBeDefault(best->GetVPanel()))
        {
            if (_defaultButton)
			{
                SetCurrentDefaultButton(_defaultButton);
			}
			else
			{
//.........这里部分代码省略.........