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/*
* Copyright (C) 2004, 2008, 2009, 2010 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "third_party/blink/renderer/core/editing/drag_caret.h"
#include "third_party/blink/renderer/core/editing/caret_display_item_client.h"
#include "third_party/blink/renderer/core/editing/editing_utilities.h"
#include "third_party/blink/renderer/core/editing/visible_position.h"
#include "third_party/blink/renderer/core/frame/settings.h"
#include "third_party/blink/renderer/core/layout/layout_view.h"
#include "third_party/blink/renderer/core/paint/paint_layer.h"
namespace blink {
DragCaret::DragCaret()
: display_item_client_(MakeGarbageCollected<CaretDisplayItemClient>()) {}
void DragCaret::LayoutBlockWillBeDestroyed(const LayoutBlock& block) {
display_item_client_->LayoutBlockWillBeDestroyed(block);
}
void DragCaret::UpdateStyleAndLayoutIfNeeded() {
display_item_client_->UpdateStyleAndLayoutIfNeeded(
RootEditableElementOf(position_.GetPosition()) ? position_
: PositionWithAffinity());
}
void DragCaret::InvalidatePaint(const LayoutBlock& block,
const PaintInvalidatorContext& context) {
display_item_client_->InvalidatePaint(block, context);
}
bool DragCaret::IsContentRichlyEditable() const {
return IsRichlyEditablePosition(position_.GetPosition());
}
void DragCaret::SetCaretPosition(const PositionWithAffinity& position) {
position_ = position;
}
void DragCaret::NodeChildrenWillBeRemoved(ContainerNode& container) {
if (!HasCaret() || !container.InActiveDocument())
return;
Node* const anchor_node = position_.GetPosition().AnchorNode();
if (!anchor_node || anchor_node == container)
return;
if (container.GetDocument() != anchor_node->GetDocument() ||
!container.IsShadowIncludingInclusiveAncestorOf(*anchor_node)) {
return;
}
Clear();
}
void DragCaret::NodeWillBeRemoved(Node& node) {
if (!HasCaret() || !node.InActiveDocument())
return;
Node* const anchor_node = position_.GetPosition().AnchorNode();
if (!anchor_node)
return;
if (node.GetDocument() != anchor_node->GetDocument() ||
!node.IsShadowIncludingInclusiveAncestorOf(*anchor_node)) {
return;
}
Clear();
}
void DragCaret::Trace(Visitor* visitor) const {
visitor->Trace(position_);
visitor->Trace(display_item_client_);
}
bool DragCaret::ShouldPaintCaret(const LayoutBlock& block) const {
return display_item_client_->ShouldPaintCaret(block);
}
bool DragCaret::ShouldPaintCaret(
const PhysicalBoxFragment& box_fragment) const {
return display_item_client_->ShouldPaintCaret(box_fragment);
}
void DragCaret::PaintDragCaret(const LocalFrame* frame,
GraphicsContext& context,
const PhysicalOffset& paint_offset) const {
if (position_.AnchorNode()->GetDocument().GetFrame() != frame)
return;
display_item_client_->PaintCaret(context, paint_offset,
DisplayItem::kDragCaret);
}
} // namespace blink
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