summaryrefslogtreecommitdiffstats
path: root/layout/xul/tree/nsTreeColumns.cpp
diff options
context:
space:
mode:
Diffstat (limited to 'layout/xul/tree/nsTreeColumns.cpp')
-rw-r--r--layout/xul/tree/nsTreeColumns.cpp462
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..62a8299c6f
--- /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(kNameSpaceID_None, 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;
+ }
+ }
+}