void
nsSplitterFrameInner::UpdateState()
{
// State Transitions:
// Open -> Dragging
// Open -> CollapsedBefore
// Open -> CollapsedAfter
// CollapsedBefore -> Open
// CollapsedBefore -> Dragging
// CollapsedAfter -> Open
// CollapsedAfter -> Dragging
// Dragging -> Open
// Dragging -> CollapsedBefore (auto collapse)
// Dragging -> CollapsedAfter (auto collapse)
State newState = GetState();
if (newState == mState) {
// No change.
return;
}
if ((SupportsCollapseDirection(Before) || SupportsCollapseDirection(After)) &&
mOuter->GetParent()->IsBoxFrame()) {
// Find the splitter's immediate sibling.
nsIFrame* splitterSibling;
if (newState == CollapsedBefore || mState == CollapsedBefore) {
splitterSibling = mOuter->GetPrevSibling();
} else {
splitterSibling = mOuter->GetNextSibling();
}
if (splitterSibling) {
nsCOMPtr<nsIContent> sibling = splitterSibling->GetContent();
if (sibling) {
if (mState == CollapsedBefore || mState == CollapsedAfter) {
// CollapsedBefore -> Open
// CollapsedBefore -> Dragging
// CollapsedAfter -> Open
// CollapsedAfter -> Dragging
nsContentUtils::AddScriptRunner(
new nsUnsetAttrRunnable(sibling, nsGkAtoms::collapsed));
} else if ((mState == Open || mState == Dragging)
&& (newState == CollapsedBefore ||
newState == CollapsedAfter)) {
// Open -> CollapsedBefore / CollapsedAfter
// Dragging -> CollapsedBefore / CollapsedAfter
nsContentUtils::AddScriptRunner(
new nsSetAttrRunnable(sibling, nsGkAtoms::collapsed,
NS_LITERAL_STRING("true")));
}
}
}
}
mState = newState;
}
nsSplitterFrameInner::State
nsSplitterFrameInner::GetState()
{
static nsIContent::AttrValuesArray strings[] =
{&nsGkAtoms::dragging, &nsGkAtoms::collapsed, nullptr};
static nsIContent::AttrValuesArray strings_substate[] =
{&nsGkAtoms::before, &nsGkAtoms::after, nullptr};
switch (mOuter->GetContent()->FindAttrValueIn(kNameSpaceID_None,
nsGkAtoms::state,
strings, eCaseMatters)) {
case 0: return Dragging;
case 1:
switch (mOuter->GetContent()->FindAttrValueIn(kNameSpaceID_None,
nsGkAtoms::substate,
strings_substate,
eCaseMatters)) {
case 0: return CollapsedBefore;
case 1: return CollapsedAfter;
default:
if (SupportsCollapseDirection(After))
return CollapsedAfter;
return CollapsedBefore;
}
}
return Open;
}
void
nsSplitterFrameInner::MouseDrag(nsPresContext* aPresContext, nsGUIEvent* aEvent)
{
if (mDragging && mOuter) {
//printf("Dragging\n");
bool isHorizontal = !mOuter->IsHorizontal();
// convert coord to pixels
nsPoint pt = nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent,
mParentBox);
nscoord pos = isHorizontal ? pt.x : pt.y;
// mDragStart is in frame coordinates
nscoord start = mDragStart;
// take our current position and subtract the start location
pos -= start;
//printf("Diff=%d\n", pos);
ResizeType resizeAfter = GetResizeAfter();
bool bounded;
if (resizeAfter == nsSplitterFrameInner::Grow)
bounded = false;
else
bounded = true;
int i;
for (i=0; i < mChildInfosBeforeCount; i++)
mChildInfosBefore[i].changed = mChildInfosBefore[i].current;
for (i=0; i < mChildInfosAfterCount; i++)
mChildInfosAfter[i].changed = mChildInfosAfter[i].current;
nscoord oldPos = pos;
ResizeChildTo(aPresContext, pos, mChildInfosBefore, mChildInfosAfter, mChildInfosBeforeCount, mChildInfosAfterCount, bounded);
State currentState = GetState();
bool supportsBefore = SupportsCollapseDirection(Before);
bool supportsAfter = SupportsCollapseDirection(After);
const bool isRTL = mOuter->GetStyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL;
bool pastEnd = oldPos > 0 && oldPos > pos;
bool pastBegin = oldPos < 0 && oldPos < pos;
if (isRTL) {
// Swap the boundary checks in RTL mode
bool tmp = pastEnd;
pastEnd = pastBegin;
pastBegin = tmp;
}
const bool isCollapsedBefore = pastBegin && supportsBefore;
const bool isCollapsedAfter = pastEnd && supportsAfter;
// if we are in a collapsed position
if (isCollapsedBefore || isCollapsedAfter)
{
// and we are not collapsed then collapse
if (currentState == Dragging) {
if (pastEnd)
{
//printf("Collapse right\n");
if (supportsAfter)
{
nsCOMPtr<nsIContent> outer = mOuter->mContent;
outer->SetAttr(kNameSpaceID_None, nsGkAtoms::substate,
NS_LITERAL_STRING("after"),
true);
outer->SetAttr(kNameSpaceID_None, nsGkAtoms::state,
NS_LITERAL_STRING("collapsed"),
true);
}
} else if (pastBegin)
{
//printf("Collapse left\n");
if (supportsBefore)
{
nsCOMPtr<nsIContent> outer = mOuter->mContent;
outer->SetAttr(kNameSpaceID_None, nsGkAtoms::substate,
NS_LITERAL_STRING("before"),
true);
outer->SetAttr(kNameSpaceID_None, nsGkAtoms::state,
NS_LITERAL_STRING("collapsed"),
true);
}
}
}
} else {
// if we are not in a collapsed position and we are not dragging make sure
// we are dragging.
if (currentState != Dragging)
mOuter->mContent->SetAttr(kNameSpaceID_None, nsGkAtoms::state, NS_LITERAL_STRING("dragging"), true);
AdjustChildren(aPresContext);
}
mDidDrag = true;
}
}
void
nsSplitterFrameInner::MouseDrag(nsPresContext* aPresContext, nsGUIEvent* aEvent)
{
if (mDragging && mOuter) {
//printf("Dragging\n");
PRBool isHorizontal = !mOuter->IsHorizontal();
// convert coord to pixels
nsPoint pt = nsLayoutUtils::GetEventCoordinatesRelativeTo(aEvent,
mParentBox);
nscoord pos = isHorizontal ? pt.x : pt.y;
// mDragStart is in frame coordinates
nscoord start = mDragStart;
// take our current position and subtract the start location
pos -= start;
//printf("Diff=%d\n", pos);
ResizeType resizeAfter = GetResizeAfter();
PRBool bounded;
if (resizeAfter == nsSplitterFrameInner::Grow)
bounded = PR_FALSE;
else
bounded = PR_TRUE;
int i;
for (i=0; i < mChildInfosBeforeCount; i++)
mChildInfosBefore[i].changed = mChildInfosBefore[i].current;
for (i=0; i < mChildInfosAfterCount; i++)
mChildInfosAfter[i].changed = mChildInfosAfter[i].current;
nscoord oldPos = pos;
ResizeChildTo(aPresContext, pos, mChildInfosBefore, mChildInfosAfter, mChildInfosBeforeCount, mChildInfosAfterCount, bounded);
State currentState = GetState();
PRBool supportsBefore = SupportsCollapseDirection(Before);
PRBool supportsAfter = SupportsCollapseDirection(After);
// if we are in a collapsed position
if ((oldPos > 0 && oldPos > pos && supportsAfter) ||
(oldPos < 0 && oldPos < pos && supportsBefore))
{
// and we are not collapsed then collapse
if (currentState == Dragging) {
if (oldPos > 0 && oldPos > pos)
{
//printf("Collapse right\n");
if (supportsAfter)
{
nsCOMPtr<nsIContent> outer = mOuter->mContent;
outer->SetAttr(kNameSpaceID_None, nsGkAtoms::substate,
NS_LITERAL_STRING("after"),
PR_TRUE);
outer->SetAttr(kNameSpaceID_None, nsGkAtoms::state,
NS_LITERAL_STRING("collapsed"),
PR_TRUE);
}
} else if (oldPos < 0 && oldPos < pos)
{
//printf("Collapse left\n");
if (supportsBefore)
{
nsCOMPtr<nsIContent> outer = mOuter->mContent;
outer->SetAttr(kNameSpaceID_None, nsGkAtoms::substate,
NS_LITERAL_STRING("before"),
PR_TRUE);
outer->SetAttr(kNameSpaceID_None, nsGkAtoms::state,
NS_LITERAL_STRING("collapsed"),
PR_TRUE);
}
}
}
} else {
// if we are not in a collapsed position and we are not dragging make sure
// we are dragging.
if (currentState != Dragging)
mOuter->mContent->SetAttr(kNameSpaceID_None, nsGkAtoms::state, NS_LITERAL_STRING("dragging"), PR_TRUE);
AdjustChildren(aPresContext);
}
mDidDrag = PR_TRUE;
}
}
