1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/xul/nsPopupSetFrame.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,160 @@
1.4 +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
1.5 +/* This Source Code Form is subject to the terms of the Mozilla Public
1.6 + * License, v. 2.0. If a copy of the MPL was not distributed with this
1.7 + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
1.8 +
1.9 +#include "nsPopupSetFrame.h"
1.10 +#include "nsGkAtoms.h"
1.11 +#include "nsCOMPtr.h"
1.12 +#include "nsIContent.h"
1.13 +#include "nsPresContext.h"
1.14 +#include "nsStyleContext.h"
1.15 +#include "nsBoxLayoutState.h"
1.16 +#include "nsIScrollableFrame.h"
1.17 +#include "nsIRootBox.h"
1.18 +#include "nsMenuPopupFrame.h"
1.19 +
1.20 +nsIFrame*
1.21 +NS_NewPopupSetFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
1.22 +{
1.23 + return new (aPresShell) nsPopupSetFrame (aPresShell, aContext);
1.24 +}
1.25 +
1.26 +NS_IMPL_FRAMEARENA_HELPERS(nsPopupSetFrame)
1.27 +
1.28 +void
1.29 +nsPopupSetFrame::Init(nsIContent* aContent,
1.30 + nsIFrame* aParent,
1.31 + nsIFrame* aPrevInFlow)
1.32 +{
1.33 + nsBoxFrame::Init(aContent, aParent, aPrevInFlow);
1.34 +
1.35 + // Normally the root box is our grandparent, but in case of wrapping
1.36 + // it can be our great-grandparent.
1.37 + nsIRootBox *rootBox = nsIRootBox::GetRootBox(PresContext()->GetPresShell());
1.38 + if (rootBox) {
1.39 + rootBox->SetPopupSetFrame(this);
1.40 + }
1.41 +}
1.42 +
1.43 +nsIAtom*
1.44 +nsPopupSetFrame::GetType() const
1.45 +{
1.46 + return nsGkAtoms::popupSetFrame;
1.47 +}
1.48 +
1.49 +nsresult
1.50 +nsPopupSetFrame::AppendFrames(ChildListID aListID,
1.51 + nsFrameList& aFrameList)
1.52 +{
1.53 + if (aListID == kPopupList) {
1.54 + AddPopupFrameList(aFrameList);
1.55 + return NS_OK;
1.56 + }
1.57 + return nsBoxFrame::AppendFrames(aListID, aFrameList);
1.58 +}
1.59 +
1.60 +nsresult
1.61 +nsPopupSetFrame::RemoveFrame(ChildListID aListID,
1.62 + nsIFrame* aOldFrame)
1.63 +{
1.64 + if (aListID == kPopupList) {
1.65 + RemovePopupFrame(aOldFrame);
1.66 + return NS_OK;
1.67 + }
1.68 + return nsBoxFrame::RemoveFrame(aListID, aOldFrame);
1.69 +}
1.70 +
1.71 +nsresult
1.72 +nsPopupSetFrame::InsertFrames(ChildListID aListID,
1.73 + nsIFrame* aPrevFrame,
1.74 + nsFrameList& aFrameList)
1.75 +{
1.76 + if (aListID == kPopupList) {
1.77 + AddPopupFrameList(aFrameList);
1.78 + return NS_OK;
1.79 + }
1.80 + return nsBoxFrame::InsertFrames(aListID, aPrevFrame, aFrameList);
1.81 +}
1.82 +
1.83 +nsresult
1.84 +nsPopupSetFrame::SetInitialChildList(ChildListID aListID,
1.85 + nsFrameList& aChildList)
1.86 +{
1.87 + if (aListID == kPopupList) {
1.88 + NS_ASSERTION(mPopupList.IsEmpty(),
1.89 + "SetInitialChildList on non-empty child list");
1.90 + AddPopupFrameList(aChildList);
1.91 + return NS_OK;
1.92 + }
1.93 + return nsBoxFrame::SetInitialChildList(aListID, aChildList);
1.94 +}
1.95 +
1.96 +const nsFrameList&
1.97 +nsPopupSetFrame::GetChildList(ChildListID aListID) const
1.98 +{
1.99 + if (kPopupList == aListID) {
1.100 + return mPopupList;
1.101 + }
1.102 + return nsBoxFrame::GetChildList(aListID);
1.103 +}
1.104 +
1.105 +void
1.106 +nsPopupSetFrame::GetChildLists(nsTArray<ChildList>* aLists) const
1.107 +{
1.108 + nsBoxFrame::GetChildLists(aLists);
1.109 + mPopupList.AppendIfNonempty(aLists, kPopupList);
1.110 +}
1.111 +
1.112 +void
1.113 +nsPopupSetFrame::DestroyFrom(nsIFrame* aDestructRoot)
1.114 +{
1.115 + mPopupList.DestroyFramesFrom(aDestructRoot);
1.116 +
1.117 + // Normally the root box is our grandparent, but in case of wrapping
1.118 + // it can be our great-grandparent.
1.119 + nsIRootBox *rootBox = nsIRootBox::GetRootBox(PresContext()->GetPresShell());
1.120 + if (rootBox) {
1.121 + rootBox->SetPopupSetFrame(nullptr);
1.122 + }
1.123 +
1.124 + nsBoxFrame::DestroyFrom(aDestructRoot);
1.125 +}
1.126 +
1.127 +NS_IMETHODIMP
1.128 +nsPopupSetFrame::DoLayout(nsBoxLayoutState& aState)
1.129 +{
1.130 + // lay us out
1.131 + nsresult rv = nsBoxFrame::DoLayout(aState);
1.132 +
1.133 + // lay out all of our currently open popups.
1.134 + for (nsFrameList::Enumerator e(mPopupList); !e.AtEnd(); e.Next()) {
1.135 + nsMenuPopupFrame* popupChild = static_cast<nsMenuPopupFrame*>(e.get());
1.136 + popupChild->LayoutPopup(aState, nullptr, nullptr, false);
1.137 + }
1.138 +
1.139 + return rv;
1.140 +}
1.141 +
1.142 +void
1.143 +nsPopupSetFrame::RemovePopupFrame(nsIFrame* aPopup)
1.144 +{
1.145 + NS_PRECONDITION((aPopup->GetStateBits() & NS_FRAME_OUT_OF_FLOW) &&
1.146 + aPopup->GetType() == nsGkAtoms::menuPopupFrame,
1.147 + "removing wrong type of frame in popupset's ::popupList");
1.148 +
1.149 + mPopupList.DestroyFrame(aPopup);
1.150 +}
1.151 +
1.152 +void
1.153 +nsPopupSetFrame::AddPopupFrameList(nsFrameList& aPopupFrameList)
1.154 +{
1.155 +#ifdef DEBUG
1.156 + for (nsFrameList::Enumerator e(aPopupFrameList); !e.AtEnd(); e.Next()) {
1.157 + NS_ASSERTION((e.get()->GetStateBits() & NS_FRAME_OUT_OF_FLOW) &&
1.158 + e.get()->GetType() == nsGkAtoms::menuPopupFrame,
1.159 + "adding wrong type of frame in popupset's ::popupList");
1.160 + }
1.161 +#endif
1.162 + mPopupList.InsertFrames(nullptr, nullptr, aPopupFrameList);
1.163 +}
