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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsCOMPtr.h"
#include "nsTreeColFrame.h"
#include "nsGkAtoms.h"
#include "nsIContent.h"
#include "nsStyleContext.h"
#include "nsNameSpaceManager.h"
#include "nsIBoxObject.h"
#include "mozilla/dom/TreeBoxObject.h"
#include "nsIDOMElement.h"
#include "nsITreeColumns.h"
#include "nsIDOMXULTreeElement.h"
#include "nsDisplayList.h"
#include "nsTreeBodyFrame.h"
//
// NS_NewTreeColFrame
//
// Creates a new col frame
//
nsIFrame*
NS_NewTreeColFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) nsTreeColFrame(aContext);
}
NS_IMPL_FRAMEARENA_HELPERS(nsTreeColFrame)
// Destructor
nsTreeColFrame::~nsTreeColFrame()
{
}
void
nsTreeColFrame::Init(nsIContent* aContent,
nsContainerFrame* aParent,
nsIFrame* aPrevInFlow)
{
nsBoxFrame::Init(aContent, aParent, aPrevInFlow);
InvalidateColumns();
}
void
nsTreeColFrame::DestroyFrom(nsIFrame* aDestructRoot)
{
InvalidateColumns(false);
nsBoxFrame::DestroyFrom(aDestructRoot);
}
class nsDisplayXULTreeColSplitterTarget : public nsDisplayItem {
public:
nsDisplayXULTreeColSplitterTarget(nsDisplayListBuilder* aBuilder,
nsIFrame* aFrame) :
nsDisplayItem(aBuilder, aFrame) {
MOZ_COUNT_CTOR(nsDisplayXULTreeColSplitterTarget);
}
#ifdef NS_BUILD_REFCNT_LOGGING
virtual ~nsDisplayXULTreeColSplitterTarget() {
MOZ_COUNT_DTOR(nsDisplayXULTreeColSplitterTarget);
}
#endif
virtual void HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
HitTestState* aState,
nsTArray<nsIFrame*> *aOutFrames) override;
NS_DISPLAY_DECL_NAME("XULTreeColSplitterTarget", TYPE_XUL_TREE_COL_SPLITTER_TARGET)
};
void
nsDisplayXULTreeColSplitterTarget::HitTest(nsDisplayListBuilder* aBuilder, const nsRect& aRect,
HitTestState* aState, nsTArray<nsIFrame*> *aOutFrames)
{
nsRect rect = aRect - ToReferenceFrame();
// If we are in either in the first 4 pixels or the last 4 pixels, we're going to
// do something really strange. Check for an adjacent splitter.
bool left = false;
bool right = false;
if (mFrame->GetSize().width - nsPresContext::CSSPixelsToAppUnits(4) <= rect.XMost()) {
right = true;
} else if (nsPresContext::CSSPixelsToAppUnits(4) > rect.x) {
left = true;
}
// Swap left and right for RTL trees in order to find the correct splitter
if (mFrame->StyleVisibility()->mDirection == NS_STYLE_DIRECTION_RTL) {
bool tmp = left;
left = right;
right = tmp;
}
if (left || right) {
// We are a header. Look for the correct splitter.
nsIFrame* child;
if (left)
child = mFrame->GetPrevSibling();
else
child = mFrame->GetNextSibling();
if (child && child->GetContent()->NodeInfo()->Equals(nsGkAtoms::splitter,
kNameSpaceID_XUL)) {
aOutFrames->AppendElement(child);
}
}
}
void
nsTreeColFrame::BuildDisplayListForChildren(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists)
{
if (!aBuilder->IsForEventDelivery()) {
nsBoxFrame::BuildDisplayListForChildren(aBuilder, aDirtyRect, aLists);
return;
}
nsDisplayListCollection set;
nsBoxFrame::BuildDisplayListForChildren(aBuilder, aDirtyRect, set);
WrapListsInRedirector(aBuilder, set, aLists);
aLists.Content()->AppendNewToTop(new (aBuilder)
nsDisplayXULTreeColSplitterTarget(aBuilder, this));
}
nsresult
nsTreeColFrame::AttributeChanged(int32_t aNameSpaceID,
nsIAtom* aAttribute,
int32_t aModType)
{
nsresult rv = nsBoxFrame::AttributeChanged(aNameSpaceID, aAttribute,
aModType);
if (aAttribute == nsGkAtoms::ordinal || aAttribute == nsGkAtoms::primary) {
InvalidateColumns();
}
return rv;
}
void
nsTreeColFrame::SetXULBounds(nsBoxLayoutState& aBoxLayoutState,
const nsRect& aRect,
bool aRemoveOverflowArea)
{
nscoord oldWidth = mRect.width;
nsBoxFrame::SetXULBounds(aBoxLayoutState, aRect, aRemoveOverflowArea);
if (mRect.width != oldWidth) {
nsITreeBoxObject* treeBoxObject = GetTreeBoxObject();
if (treeBoxObject) {
treeBoxObject->Invalidate();
}
}
}
nsITreeBoxObject*
nsTreeColFrame::GetTreeBoxObject()
{
nsITreeBoxObject* result = nullptr;
nsIContent* parent = mContent->GetParent();
if (parent) {
nsIContent* grandParent = parent->GetParent();
nsCOMPtr<nsIDOMXULElement> treeElement = do_QueryInterface(grandParent);
if (treeElement) {
nsCOMPtr<nsIBoxObject> boxObject;
treeElement->GetBoxObject(getter_AddRefs(boxObject));
nsCOMPtr<nsITreeBoxObject> treeBoxObject = do_QueryInterface(boxObject);
result = treeBoxObject.get();
}
}
return result;
}
void
nsTreeColFrame::InvalidateColumns(bool aCanWalkFrameTree)
{
nsITreeBoxObject* treeBoxObject = GetTreeBoxObject();
if (treeBoxObject) {
nsCOMPtr<nsITreeColumns> columns;
if (aCanWalkFrameTree) {
treeBoxObject->GetColumns(getter_AddRefs(columns));
} else {
nsTreeBodyFrame* body = static_cast<mozilla::dom::TreeBoxObject*>
(treeBoxObject)->GetCachedTreeBodyFrame();
if (body) {
columns = body->Columns();
}
}
if (columns)
columns->InvalidateColumns();
}
}
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