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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "nsTreeColFrame.h"
#include "mozilla/ComputedStyle.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/PresShell.h"
#include "mozilla/dom/XULTreeElement.h"
#include "nsCOMPtr.h"
#include "nsGkAtoms.h"
#include "nsIContent.h"
#include "nsNameSpaceManager.h"
#include "nsTreeColumns.h"
#include "nsDisplayList.h"
#include "nsTreeBodyFrame.h"
#include "nsXULElement.h"
using namespace mozilla;
using namespace mozilla::dom;
//
// NS_NewTreeColFrame
//
// Creates a new col frame
//
nsIFrame* NS_NewTreeColFrame(PresShell* aPresShell, ComputedStyle* aStyle) {
return new (aPresShell) nsTreeColFrame(aStyle, aPresShell->GetPresContext());
}
NS_IMPL_FRAMEARENA_HELPERS(nsTreeColFrame)
// Destructor
nsTreeColFrame::~nsTreeColFrame() = default;
void nsTreeColFrame::Init(nsIContent* aContent, nsContainerFrame* aParent,
nsIFrame* aPrevInFlow) {
nsBoxFrame::Init(aContent, aParent, aPrevInFlow);
InvalidateColumns();
}
void nsTreeColFrame::DestroyFrom(nsIFrame* aDestructRoot,
PostDestroyData& aPostDestroyData) {
InvalidateColumns(false);
nsBoxFrame::DestroyFrom(aDestructRoot, aPostDestroyData);
}
class nsDisplayXULTreeColSplitterTarget final : public nsDisplayItem {
public:
nsDisplayXULTreeColSplitterTarget(nsDisplayListBuilder* aBuilder,
nsIFrame* aFrame)
: nsDisplayItem(aBuilder, aFrame) {
MOZ_COUNT_CTOR(nsDisplayXULTreeColSplitterTarget);
}
MOZ_COUNTED_DTOR_OVERRIDE(nsDisplayXULTreeColSplitterTarget)
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 == StyleDirection::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 nsDisplayListSet& aLists) {
if (!aBuilder->IsForEventDelivery()) {
nsBoxFrame::BuildDisplayListForChildren(aBuilder, aLists);
return;
}
nsDisplayListCollection set(aBuilder);
nsBoxFrame::BuildDisplayListForChildren(aBuilder, set);
WrapListsInRedirector(aBuilder, set, aLists);
aLists.Content()->AppendNewToTop<nsDisplayXULTreeColSplitterTarget>(aBuilder,
this);
}
nsresult nsTreeColFrame::AttributeChanged(int32_t aNameSpaceID,
nsAtom* aAttribute,
int32_t aModType) {
nsresult rv =
nsBoxFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType);
if (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) {
RefPtr<XULTreeElement> tree = GetTree();
if (tree) {
tree->Invalidate();
}
}
}
XULTreeElement* nsTreeColFrame::GetTree() {
nsIContent* parent = mContent->GetParent();
return parent ? XULTreeElement::FromNodeOrNull(parent->GetParent()) : nullptr;
}
void nsTreeColFrame::InvalidateColumns(bool aCanWalkFrameTree) {
RefPtr<XULTreeElement> tree = GetTree();
if (!tree) {
return;
}
nsTreeBodyFrame* body = aCanWalkFrameTree
? tree->GetTreeBodyFrame(FlushType::None)
: tree->GetCachedTreeBodyFrame();
if (!body) {
return;
}
RefPtr<nsTreeColumns> columns = body->Columns();
if (!columns) {
return;
}
columns->InvalidateColumns();
}
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