Line data    Source code

       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : #include "DetailsFrame.h"
       7             : 
       8             : #include "mozilla/Attributes.h"
       9             : #include "mozilla/dom/HTMLDetailsElement.h"
      10             : #include "mozilla/dom/HTMLSummaryElement.h"
      11             : #include "nsContentUtils.h"
      12             : #include "nsPlaceholderFrame.h"
      13             : #include "nsTextNode.h"
      14             : 
      15             : using namespace mozilla;
      16             : using namespace mozilla::dom;
      17             : 
      18           0 : NS_IMPL_FRAMEARENA_HELPERS(DetailsFrame)
      19             : 
      20           0 : NS_QUERYFRAME_HEAD(DetailsFrame)
      21           0 :   NS_QUERYFRAME_ENTRY(DetailsFrame)
      22           0 :   NS_QUERYFRAME_ENTRY(nsIAnonymousContentCreator)
      23           0 : NS_QUERYFRAME_TAIL_INHERITING(nsBlockFrame)
      24             : 
      25             : nsBlockFrame*
      26           0 : NS_NewDetailsFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
      27             : {
      28           0 :   return new (aPresShell) DetailsFrame(aContext);
      29             : }
      30             : 
      31             : namespace mozilla {
      32             : 
      33           0 : DetailsFrame::DetailsFrame(nsStyleContext* aContext)
      34           0 :   : nsBlockFrame(aContext, kClassID)
      35             : {
      36           0 : }
      37             : 
      38           0 : DetailsFrame::~DetailsFrame()
      39             : {
      40           0 : }
      41             : 
      42             : void
      43           0 : DetailsFrame::SetInitialChildList(ChildListID aListID, nsFrameList& aChildList)
      44             : {
      45             : #ifdef DEBUG
      46           0 :   if (aListID == kPrincipalList) {
      47           0 :     CheckValidMainSummary(aChildList);
      48             :   }
      49             : #endif
      50             : 
      51           0 :   nsBlockFrame::SetInitialChildList(aListID, aChildList);
      52           0 : }
      53             : 
      54             : #ifdef DEBUG
      55             : bool
      56           0 : DetailsFrame::CheckValidMainSummary(const nsFrameList& aFrameList) const
      57             : {
      58           0 :   for (nsIFrame* child : aFrameList) {
      59             :     HTMLSummaryElement* summary =
      60           0 :       HTMLSummaryElement::FromContent(child->GetContent());
      61             : 
      62           0 :     if (child == aFrameList.FirstChild()) {
      63           0 :       if (summary && summary->IsMainSummary()) {
      64           0 :         return true;
      65           0 :       } else if (child->GetContent() == GetContent()) {
      66             :         // The child frame's content is the same as our content, which means
      67             :         // it's a kind of wrapper frame. Descend into its child list to find
      68             :         // main summary.
      69           0 :         if (CheckValidMainSummary(child->PrincipalChildList())) {
      70           0 :           return true;
      71             :         }
      72             :       }
      73             :     } else {
      74           0 :       NS_ASSERTION(!summary || !summary->IsMainSummary(),
      75             :                    "Rest of the children are either not summary element "
      76             :                    "or are not the main summary!");
      77             :     }
      78             :   }
      79           0 :   return false;
      80             : }
      81             : #endif
      82             : 
      83             : void
      84           0 : DetailsFrame::DestroyFrom(nsIFrame* aDestructRoot)
      85             : {
      86           0 :   nsContentUtils::DestroyAnonymousContent(&mDefaultSummary);
      87           0 :   nsBlockFrame::DestroyFrom(aDestructRoot);
      88           0 : }
      89             : 
      90             : nsresult
      91           0 : DetailsFrame::CreateAnonymousContent(nsTArray<ContentInfo>& aElements)
      92             : {
      93           0 :   auto* details = HTMLDetailsElement::FromContent(GetContent());
      94           0 :   if (details->GetFirstSummary()) {
      95           0 :     return NS_OK;
      96             :   }
      97             : 
      98             :   // The <details> element lacks any direct <summary> child. Create a default
      99             :   // <summary> element as an anonymous content.
     100             :   nsNodeInfoManager* nodeInfoManager =
     101           0 :     GetContent()->NodeInfo()->NodeInfoManager();
     102             : 
     103             :   already_AddRefed<NodeInfo> nodeInfo =
     104             :     nodeInfoManager->GetNodeInfo(nsGkAtoms::summary, nullptr, kNameSpaceID_XHTML,
     105           0 :                                  nsIDOMNode::ELEMENT_NODE);
     106           0 :   mDefaultSummary = new HTMLSummaryElement(nodeInfo);
     107             : 
     108           0 :   nsXPIDLString defaultSummaryText;
     109             :   nsContentUtils::GetLocalizedString(nsContentUtils::eFORMS_PROPERTIES,
     110           0 :                                      "DefaultSummary", defaultSummaryText);
     111           0 :   RefPtr<nsTextNode> description = new nsTextNode(nodeInfoManager);
     112           0 :   description->SetText(defaultSummaryText, false);
     113           0 :   mDefaultSummary->AppendChildTo(description, false);
     114             : 
     115           0 :   aElements.AppendElement(mDefaultSummary);
     116             : 
     117           0 :   return NS_OK;
     118             : }
     119             : 
     120             : void
     121           0 : DetailsFrame::AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
     122             :                                        uint32_t aFilter)
     123             : {
     124           0 :   if (mDefaultSummary) {
     125           0 :     aElements.AppendElement(mDefaultSummary);
     126             :   }
     127           0 : }
     128             : 
     129             : bool
     130           0 : DetailsFrame::HasMainSummaryFrame(nsIFrame* aSummaryFrame)
     131             : {
     132             :   nsIFrame* firstChild =
     133           0 :     nsPlaceholderFrame::GetRealFrameFor(mFrames.FirstChild());
     134             : 
     135           0 :   return aSummaryFrame == firstChild;
     136             : }
     137             : 
     138             : } // namespace mozilla