diff options
Diffstat (limited to 'layout/xul/tree/nsTreeColumns.cpp')
| -rw-r--r-- | layout/xul/tree/nsTreeColumns.cpp | 462 |
1 files changed, 462 insertions, 0 deletions
diff --git a/layout/xul/tree/nsTreeColumns.cpp b/layout/xul/tree/nsTreeColumns.cpp new file mode 100644 index 0000000000..e8fe7540bf --- /dev/null +++ b/layout/xul/tree/nsTreeColumns.cpp @@ -0,0 +1,462 @@ +/* -*- 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 "nsNameSpaceManager.h" +#include "nsGkAtoms.h" +#include "nsTreeColumns.h" +#include "nsTreeUtils.h" +#include "mozilla/ComputedStyle.h" +#include "nsContentUtils.h" +#include "nsTreeBodyFrame.h" +#include "mozilla/dom/Element.h" +#include "mozilla/CSSOrderAwareFrameIterator.h" +#include "mozilla/dom/TreeColumnBinding.h" +#include "mozilla/dom/TreeColumnsBinding.h" +#include "mozilla/dom/XULTreeElement.h" + +using namespace mozilla; +using namespace mozilla::dom; + +// Column class that caches all the info about our column. +nsTreeColumn::nsTreeColumn(nsTreeColumns* aColumns, dom::Element* aElement) + : mContent(aElement), mColumns(aColumns), mIndex(0), mPrevious(nullptr) { + NS_ASSERTION(aElement && aElement->NodeInfo()->Equals(nsGkAtoms::treecol, + kNameSpaceID_XUL), + "nsTreeColumn's content must be a <xul:treecol>"); + + Invalidate(IgnoreErrors()); +} + +nsTreeColumn::~nsTreeColumn() { + if (mNext) { + mNext->SetPrevious(nullptr); + } +} + +NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_CLASS(nsTreeColumn) + +NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(nsTreeColumn) + NS_IMPL_CYCLE_COLLECTION_UNLINK_PRESERVED_WRAPPER + NS_IMPL_CYCLE_COLLECTION_UNLINK(mContent) + if (tmp->mNext) { + tmp->mNext->SetPrevious(nullptr); + NS_IMPL_CYCLE_COLLECTION_UNLINK(mNext) + } +NS_IMPL_CYCLE_COLLECTION_UNLINK_END +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(nsTreeColumn) + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mContent) + NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mNext) +NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END + +NS_IMPL_CYCLE_COLLECTING_ADDREF(nsTreeColumn) +NS_IMPL_CYCLE_COLLECTING_RELEASE(nsTreeColumn) + +// QueryInterface implementation for nsTreeColumn +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsTreeColumn) + NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY + NS_INTERFACE_MAP_ENTRY(nsISupports) + NS_INTERFACE_MAP_ENTRY_CONCRETE(nsTreeColumn) +NS_INTERFACE_MAP_END + +nsIFrame* nsTreeColumn::GetFrame() { return mContent->GetPrimaryFrame(); } + +bool nsTreeColumn::IsLastVisible(nsTreeBodyFrame* aBodyFrame) { + NS_ASSERTION(GetFrame(), "should have checked for this already"); + + // cyclers are fixed width, don't adjust them + if (IsCycler()) return false; + + // we're certainly not the last visible if we're not visible + if (GetFrame()->GetRect().width == 0) return false; + + // try to find a visible successor + for (nsTreeColumn* next = GetNext(); next; next = next->GetNext()) { + nsIFrame* frame = next->GetFrame(); + if (frame && frame->GetRect().width > 0) return false; + } + return true; +} + +nsresult nsTreeColumn::GetRect(nsTreeBodyFrame* aBodyFrame, nscoord aY, + nscoord aHeight, nsRect* aResult) { + nsIFrame* frame = GetFrame(); + if (!frame) { + *aResult = nsRect(); + return NS_ERROR_FAILURE; + } + + const bool isRTL = + aBodyFrame->StyleVisibility()->mDirection == StyleDirection::Rtl; + *aResult = frame->GetRect(); + if (frame->StyleVisibility()->IsCollapse()) { + aResult->SizeTo(nsSize()); + } + aResult->y = aY; + aResult->height = aHeight; + if (isRTL) + aResult->x += aBodyFrame->mAdjustWidth; + else if (IsLastVisible(aBodyFrame)) + aResult->width += aBodyFrame->mAdjustWidth; + return NS_OK; +} + +nsresult nsTreeColumn::GetXInTwips(nsTreeBodyFrame* aBodyFrame, + nscoord* aResult) { + nsIFrame* frame = GetFrame(); + if (!frame) { + *aResult = 0; + return NS_ERROR_FAILURE; + } + *aResult = frame->GetRect().x; + return NS_OK; +} + +nsresult nsTreeColumn::GetWidthInTwips(nsTreeBodyFrame* aBodyFrame, + nscoord* aResult) { + nsIFrame* frame = GetFrame(); + if (!frame) { + *aResult = 0; + return NS_ERROR_FAILURE; + } + *aResult = frame->GetRect().width; + if (IsLastVisible(aBodyFrame)) *aResult += aBodyFrame->mAdjustWidth; + return NS_OK; +} + +void nsTreeColumn::GetId(nsAString& aId) const { aId = GetId(); } + +void nsTreeColumn::Invalidate(ErrorResult& aRv) { + nsIFrame* frame = GetFrame(); + if (NS_WARN_IF(!frame)) { + aRv.Throw(NS_ERROR_FAILURE); + return; + } + + // Fetch the Id. + mContent->GetAttr(nsGkAtoms::id, mId); + + // If we have an Id, cache the Id as an atom. + if (!mId.IsEmpty()) { + mAtom = NS_Atomize(mId); + } + + // Cache our index. + nsTreeUtils::GetColumnIndex(mContent, &mIndex); + + const nsStyleVisibility* vis = frame->StyleVisibility(); + + // Cache our text alignment policy. + const nsStyleText* textStyle = frame->StyleText(); + + mTextAlignment = textStyle->mTextAlign; + // START or END alignment sometimes means RIGHT + if ((mTextAlignment == StyleTextAlign::Start && + vis->mDirection == StyleDirection::Rtl) || + (mTextAlignment == StyleTextAlign::End && + vis->mDirection == StyleDirection::Ltr)) { + mTextAlignment = StyleTextAlign::Right; + } else if (mTextAlignment == StyleTextAlign::Start || + mTextAlignment == StyleTextAlign::End) { + mTextAlignment = StyleTextAlign::Left; + } + + // Figure out if we're the primary column (that has to have indentation + // and twisties drawn. + mIsPrimary = mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::primary, + nsGkAtoms::_true, eCaseMatters); + + // Figure out if we're a cycling column (one that doesn't cause a selection + // to happen). + mIsCycler = mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::cycler, + nsGkAtoms::_true, eCaseMatters); + + mIsEditable = mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::editable, + nsGkAtoms::_true, eCaseMatters); + + mOverflow = mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::overflow, + nsGkAtoms::_true, eCaseMatters); + + // Figure out our column type. Default type is text. + mType = TreeColumn_Binding::TYPE_TEXT; + static Element::AttrValuesArray typestrings[] = {nsGkAtoms::checkbox, + nullptr}; + switch (mContent->FindAttrValueIn(kNameSpaceID_None, nsGkAtoms::type, + typestrings, eCaseMatters)) { + case 0: + mType = TreeColumn_Binding::TYPE_CHECKBOX; + break; + } + + // Fetch the crop style. + mCropStyle = 0; + static Element::AttrValuesArray cropstrings[] = { + nsGkAtoms::center, nsGkAtoms::left, nsGkAtoms::start, nullptr}; + switch (mContent->FindAttrValueIn(kNameSpaceID_None, nsGkAtoms::crop, + cropstrings, eCaseMatters)) { + case 0: + mCropStyle = 1; + break; + case 1: + case 2: + mCropStyle = 2; + break; + } +} + +nsIContent* nsTreeColumn::GetParentObject() const { return mContent; } + +/* virtual */ +JSObject* nsTreeColumn::WrapObject(JSContext* aCx, + JS::Handle<JSObject*> aGivenProto) { + return dom::TreeColumn_Binding::Wrap(aCx, this, aGivenProto); +} + +Element* nsTreeColumn::Element() { return mContent; } + +int32_t nsTreeColumn::GetX(mozilla::ErrorResult& aRv) { + nsIFrame* frame = GetFrame(); + if (NS_WARN_IF(!frame)) { + aRv.Throw(NS_ERROR_FAILURE); + return 0; + } + + return nsPresContext::AppUnitsToIntCSSPixels(frame->GetRect().x); +} + +int32_t nsTreeColumn::GetWidth(mozilla::ErrorResult& aRv) { + nsIFrame* frame = GetFrame(); + if (NS_WARN_IF(!frame)) { + aRv.Throw(NS_ERROR_FAILURE); + return 0; + } + + return nsPresContext::AppUnitsToIntCSSPixels(frame->GetRect().width); +} + +already_AddRefed<nsTreeColumn> nsTreeColumn::GetPreviousColumn() { + return do_AddRef(mPrevious); +} + +nsTreeColumns::nsTreeColumns(nsTreeBodyFrame* aTree) : mTree(aTree) {} + +nsTreeColumns::~nsTreeColumns() { nsTreeColumns::InvalidateColumns(); } + +NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(nsTreeColumns) + +// QueryInterface implementation for nsTreeColumns +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsTreeColumns) + NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY + NS_INTERFACE_MAP_ENTRY(nsISupports) +NS_INTERFACE_MAP_END + +NS_IMPL_CYCLE_COLLECTING_ADDREF(nsTreeColumns) +NS_IMPL_CYCLE_COLLECTING_RELEASE(nsTreeColumns) + +nsIContent* nsTreeColumns::GetParentObject() const { + return mTree ? mTree->GetBaseElement() : nullptr; +} + +/* virtual */ +JSObject* nsTreeColumns::WrapObject(JSContext* aCx, + JS::Handle<JSObject*> aGivenProto) { + return dom::TreeColumns_Binding::Wrap(aCx, this, aGivenProto); +} + +XULTreeElement* nsTreeColumns::GetTree() const { + if (!mTree) { + return nullptr; + } + + return XULTreeElement::FromNodeOrNull(mTree->GetBaseElement()); +} + +uint32_t nsTreeColumns::Count() { + EnsureColumns(); + uint32_t count = 0; + for (nsTreeColumn* currCol = mFirstColumn; currCol; + currCol = currCol->GetNext()) { + ++count; + } + return count; +} + +nsTreeColumn* nsTreeColumns::GetLastColumn() { + EnsureColumns(); + nsTreeColumn* currCol = mFirstColumn; + while (currCol) { + nsTreeColumn* next = currCol->GetNext(); + if (!next) { + return currCol; + } + currCol = next; + } + return nullptr; +} + +nsTreeColumn* nsTreeColumns::GetSortedColumn() { + EnsureColumns(); + for (nsTreeColumn* currCol = mFirstColumn; currCol; + currCol = currCol->GetNext()) { + if (nsContentUtils::HasNonEmptyAttr(currCol->mContent, kNameSpaceID_None, + nsGkAtoms::sortDirection)) { + return currCol; + } + } + return nullptr; +} + +nsTreeColumn* nsTreeColumns::GetKeyColumn() { + EnsureColumns(); + + nsTreeColumn* first = nullptr; + nsTreeColumn* primary = nullptr; + nsTreeColumn* sorted = nullptr; + + for (nsTreeColumn* currCol = mFirstColumn; currCol; + currCol = currCol->GetNext()) { + // Skip hidden columns. + if (currCol->mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::hidden, + nsGkAtoms::_true, eCaseMatters)) + continue; + + // Skip non-text column + if (currCol->GetType() != TreeColumn_Binding::TYPE_TEXT) continue; + + if (!first) first = currCol; + + if (nsContentUtils::HasNonEmptyAttr(currCol->mContent, kNameSpaceID_None, + nsGkAtoms::sortDirection)) { + // Use sorted column as the key. + sorted = currCol; + break; + } + + if (currCol->IsPrimary()) + if (!primary) primary = currCol; + } + + if (sorted) return sorted; + if (primary) return primary; + return first; +} + +nsTreeColumn* nsTreeColumns::GetColumnFor(dom::Element* aElement) { + EnsureColumns(); + for (nsTreeColumn* currCol = mFirstColumn; currCol; + currCol = currCol->GetNext()) { + if (currCol->mContent == aElement) { + return currCol; + } + } + return nullptr; +} + +nsTreeColumn* nsTreeColumns::NamedGetter(const nsAString& aId, bool& aFound) { + EnsureColumns(); + for (nsTreeColumn* currCol = mFirstColumn; currCol; + currCol = currCol->GetNext()) { + if (currCol->GetId().Equals(aId)) { + aFound = true; + return currCol; + } + } + aFound = false; + return nullptr; +} + +nsTreeColumn* nsTreeColumns::GetNamedColumn(const nsAString& aId) { + bool dummy; + return NamedGetter(aId, dummy); +} + +void nsTreeColumns::GetSupportedNames(nsTArray<nsString>& aNames) { + for (nsTreeColumn* currCol = mFirstColumn; currCol; + currCol = currCol->GetNext()) { + aNames.AppendElement(currCol->GetId()); + } +} + +nsTreeColumn* nsTreeColumns::IndexedGetter(uint32_t aIndex, bool& aFound) { + EnsureColumns(); + for (nsTreeColumn* currCol = mFirstColumn; currCol; + currCol = currCol->GetNext()) { + if (currCol->GetIndex() == static_cast<int32_t>(aIndex)) { + aFound = true; + return currCol; + } + } + aFound = false; + return nullptr; +} + +nsTreeColumn* nsTreeColumns::GetColumnAt(uint32_t aIndex) { + bool dummy; + return IndexedGetter(aIndex, dummy); +} + +void nsTreeColumns::InvalidateColumns() { + for (nsTreeColumn* currCol = mFirstColumn; currCol; + currCol = currCol->GetNext()) { + currCol->SetColumns(nullptr); + } + mFirstColumn = nullptr; +} + +nsTreeColumn* nsTreeColumns::GetPrimaryColumn() { + EnsureColumns(); + for (nsTreeColumn* currCol = mFirstColumn; currCol; + currCol = currCol->GetNext()) { + if (currCol->IsPrimary()) { + return currCol; + } + } + return nullptr; +} + +void nsTreeColumns::EnsureColumns() { + if (mTree && !mFirstColumn) { + nsIContent* treeContent = mTree->GetBaseElement(); + if (!treeContent) return; + + nsIContent* colsContent = + nsTreeUtils::GetDescendantChild(treeContent, nsGkAtoms::treecols); + if (!colsContent) return; + + nsIContent* colContent = + nsTreeUtils::GetDescendantChild(colsContent, nsGkAtoms::treecol); + if (!colContent) return; + + nsIFrame* colFrame = colContent->GetPrimaryFrame(); + if (!colFrame) return; + + colFrame = colFrame->GetParent(); + if (!colFrame || !colFrame->GetContent()) return; + + nsTreeColumn* currCol = nullptr; + + // Enumerate the columns in visible order + CSSOrderAwareFrameIterator iter( + colFrame, FrameChildListID::Principal, + CSSOrderAwareFrameIterator::ChildFilter::IncludeAll); + for (; !iter.AtEnd(); iter.Next()) { + nsIFrame* colFrame = iter.get(); + nsIContent* colContent = colFrame->GetContent(); + if (!colContent->IsXULElement(nsGkAtoms::treecol)) { + continue; + } + // Create a new column structure. + nsTreeColumn* col = new nsTreeColumn(this, colContent->AsElement()); + + if (currCol) { + currCol->SetNext(col); + col->SetPrevious(currCol); + } else { + mFirstColumn = col; + } + currCol = col; + } + } +} |