void DisplayList::DoButtonStateTransition(SObject* newButton, int transition)
{
FLASHASSERT(newButton);
switch ( transition ) {
case bsIdleToOverUp:
case bsOverDownToOverUp:
buttonState = bsOverUp;
break;
case bsOverUpToIdle:
case bsOutDownToIdle:
case bsOverDownToIdle:
buttonState = bsIdle;
break;
case bsOverUpToOverDown:
case bsOutDownToOverDown:
case bsIdleToOverDown:
buttonState = bsOverDown;
break;
case bsOverDownToOutDown:
buttonState = bsOutDown;
break;
default:
FLASHASSERT(false);
}
UpdateButton(newButton, buttonState);
DoButtonAction(newButton, transition);
if ( buttonState == bsIdle ) {
button = 0;
buttonParent = 0;
buttonCharacter = 0;
buttonDepth = 0;
buttonRatio = 0;
} else {
button = newButton;
buttonParent = newButton->parent;
buttonCharacter = newButton->character;
buttonDepth = newButton->depth;
buttonRatio = newButton->ratio;
}
}
PRBool
nsScrollbarButtonFrame::HandleButtonPress(nsPresContext* aPresContext,
nsGUIEvent* aEvent,
nsEventStatus* aEventStatus)
{
// Get the desired action for the scrollbar button.
nsILookAndFeel::nsMetricID tmpAction;
if (aEvent->eventStructType == NS_MOUSE_EVENT &&
aEvent->message == NS_MOUSE_BUTTON_DOWN) {
PRUint16 button = static_cast<nsMouseEvent*>(aEvent)->button;
if (button == nsMouseEvent::eLeftButton) {
tmpAction = nsILookAndFeel::eMetric_ScrollButtonLeftMouseButtonAction;
} else if (button == nsMouseEvent::eMiddleButton) {
tmpAction = nsILookAndFeel::eMetric_ScrollButtonMiddleMouseButtonAction;
} else if (button == nsMouseEvent::eRightButton) {
tmpAction = nsILookAndFeel::eMetric_ScrollButtonRightMouseButtonAction;
} else {
return PR_FALSE;
}
} else {
return PR_FALSE;
}
// Get the button action metric from the pres. shell.
PRInt32 pressedButtonAction;
if (NS_FAILED(aPresContext->LookAndFeel()->GetMetric(tmpAction,
pressedButtonAction)))
return PR_FALSE;
// get the scrollbar control
nsIFrame* scrollbar;
GetParentWithTag(nsGkAtoms::scrollbar, this, scrollbar);
if (scrollbar == nsnull)
return PR_FALSE;
// get the scrollbars content node
nsIContent* content = scrollbar->GetContent();
static nsIContent::AttrValuesArray strings[] = { &nsGkAtoms::increment,
&nsGkAtoms::decrement,
nsnull };
PRInt32 index = mContent->FindAttrValueIn(kNameSpaceID_None,
nsGkAtoms::type,
strings, eCaseMatters);
PRInt32 direction;
if (index == 0)
direction = 1;
else if (index == 1)
direction = -1;
else
return PR_FALSE;
// Whether or not to repeat the click action.
PRBool repeat = PR_TRUE;
// Use smooth scrolling by default.
PRBool smoothScroll = PR_TRUE;
switch (pressedButtonAction) {
case 0:
mIncrement = direction * nsSliderFrame::GetIncrement(content);
break;
case 1:
mIncrement = direction * nsSliderFrame::GetPageIncrement(content);
break;
case 2:
if (direction == -1)
mIncrement = -nsSliderFrame::GetCurrentPosition(content);
else
mIncrement = nsSliderFrame::GetMaxPosition(content) -
nsSliderFrame::GetCurrentPosition(content);
// Don't repeat or use smooth scrolling if scrolling to beginning or end
// of a page.
repeat = smoothScroll = PR_FALSE;
break;
case 3:
default:
// We were told to ignore this click, or someone assigned a non-standard
// value to the button's action.
return PR_FALSE;
}
// set this attribute so we can style it later
nsWeakFrame weakFrame(this);
mContent->SetAttr(kNameSpaceID_None, nsGkAtoms::active, NS_LITERAL_STRING("true"), PR_TRUE);
if (weakFrame.IsAlive()) {
DoButtonAction(smoothScroll);
}
if (repeat)
StartRepeat();
return PR_TRUE;
}
void nsScrollbarButtonFrame::Notify()
{
// Since this is only going to get called if we're scrolling a page length
// or a line increment, we will always use smooth scrolling.
DoButtonAction(PR_TRUE);
}
