Merge 'wip/next' into dev

Change-Id: Iff9ee5e23bb326c4371ec8ed81d56f2f05d680e9

1 files changed, 102 insertions, 0 deletions

diff --git a/Source/WebCore/html/HTMLSlotElement.cpp b/Source/WebCore/html/HTMLSlotElement.cpp
new file mode 100644
index 000000000..73cc9612d
--- /dev/null
+++ b/Source/WebCore/html/HTMLSlotElement.cpp
@@ -0,0 +1,102 @@
+/*
+ * Copyright (C) 2015 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 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 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 "config.h"
+#include "HTMLSlotElement.h"
+
+#if ENABLE(SHADOW_DOM) || ENABLE(DETAILS_ELEMENT)
+
+#include "ElementChildIterator.h"
+#include "HTMLNames.h"
+#include "ShadowRoot.h"
+
+namespace WebCore {
+
+using namespace HTMLNames;
+
+Ref<HTMLSlotElement> HTMLSlotElement::create(const QualifiedName& tagName, Document& document)
+{
+    return adoptRef(*new HTMLSlotElement(tagName, document));
+}
+
+HTMLSlotElement::HTMLSlotElement(const QualifiedName& tagName, Document& document)
+    : HTMLElement(tagName, document)
+{
+    ASSERT(hasTagName(slotTag));
+}
+
+HTMLSlotElement::InsertionNotificationRequest HTMLSlotElement::insertedInto(ContainerNode& insertionPoint)
+{
+    auto insertionResult = HTMLElement::insertedInto(insertionPoint);
+    ASSERT_UNUSED(insertionResult, insertionResult == InsertionDone);
+
+    // This function could be called when this element's shadow root's host or its ancestor is inserted.
+    // This element is new to the shadow tree (and its tree scope) only if the parent into which this element
+    // or its ancestor is inserted belongs to the same tree scope as this element's.
+    if (insertionPoint.isInShadowTree() && isInShadowTree() && &insertionPoint.treeScope() == &treeScope()) {
+        if (auto shadowRoot = containingShadowRoot())
+            shadowRoot->addSlotElementByName(fastGetAttribute(nameAttr), *this);
+    }
+
+    return InsertionDone;
+}
+
+void HTMLSlotElement::removedFrom(ContainerNode& insertionPoint)
+{
+    // ContainerNode::removeBetween always sets the removed chid's tree scope to Document's but InShadowRoot flag is unset in Node::removedFrom.
+    // So if InShadowRoot flag is set but this element's tree scope is Document's, this element has just been removed from a shadow root.
+    if (insertionPoint.isInShadowTree() && isInShadowTree() && &treeScope() == &document()) {
+        auto* oldShadowRoot = insertionPoint.containingShadowRoot();
+        ASSERT(oldShadowRoot);
+        oldShadowRoot->removeSlotElementByName(fastGetAttribute(nameAttr), *this);
+    }
+
+    HTMLElement::removedFrom(insertionPoint);
+}
+
+void HTMLSlotElement::attributeChanged(const QualifiedName& name, const AtomicString& oldValue, const AtomicString& newValue, AttributeModificationReason reason)
+{
+    HTMLElement::attributeChanged(name, oldValue, newValue, reason);
+
+    if (isInShadowTree() && name == nameAttr) {
+        if (auto* shadowRoot = containingShadowRoot()) {
+            shadowRoot->removeSlotElementByName(oldValue, *this);
+            shadowRoot->addSlotElementByName(newValue, *this);
+        }
+    }
+}
+
+const Vector<Node*>* HTMLSlotElement::assignedNodes() const
+{
+    auto* shadowRoot = containingShadowRoot();
+    if (!shadowRoot)
+        return nullptr;
+
+    return shadowRoot->assignedNodesForSlot(*this);
+}
+
+}
+
+#endif