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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-28 14:29:10 +0000 |
commit | 2aa4a82499d4becd2284cdb482213d541b8804dd (patch) | |
tree | b80bf8bf13c3766139fbacc530efd0dd9d54394c /layout/xul/nsXULLabelFrame.cpp | |
parent | Initial commit. (diff) | |
download | firefox-upstream.tar.xz firefox-upstream.zip |
Adding upstream version 86.0.1.upstream/86.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'layout/xul/nsXULLabelFrame.cpp')
-rw-r--r-- | layout/xul/nsXULLabelFrame.cpp | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/layout/xul/nsXULLabelFrame.cpp b/layout/xul/nsXULLabelFrame.cpp new file mode 100644 index 0000000000..b2f187dcd4 --- /dev/null +++ b/layout/xul/nsXULLabelFrame.cpp @@ -0,0 +1,96 @@ +/* -*- 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/. */ + +/* derived class of nsBlockFrame used for xul:label elements */ + +#include "nsXULLabelFrame.h" + +#include "mozilla/EventStateManager.h" +#include "mozilla/PresShell.h" +#include "nsHTMLParts.h" +#include "nsNameSpaceManager.h" + +using namespace mozilla; + +nsIFrame* NS_NewXULLabelFrame(PresShell* aPresShell, ComputedStyle* aStyle) { + nsXULLabelFrame* it = + new (aPresShell) nsXULLabelFrame(aStyle, aPresShell->GetPresContext()); + it->AddStateBits(NS_BLOCK_FORMATTING_CONTEXT_STATE_BITS); + return it; +} + +NS_IMPL_FRAMEARENA_HELPERS(nsXULLabelFrame) + +// If you make changes to this function, check its counterparts +// in nsBoxFrame and nsTextBoxFrame +nsresult nsXULLabelFrame::RegUnregAccessKey(bool aDoReg) { + // To filter out <label>s without a control attribute. + // XXXjag a side-effect is that we filter out anonymous <label>s + // in e.g. <menu>, <menuitem>, <button>. These <label>s inherit + // |accesskey| and would otherwise register themselves, overwriting + // the content we really meant to be registered. + if (!mContent->AsElement()->HasAttr(kNameSpaceID_None, nsGkAtoms::control)) + return NS_OK; + + nsAutoString accessKey; + mContent->AsElement()->GetAttr(kNameSpaceID_None, nsGkAtoms::accesskey, + accessKey); + + if (accessKey.IsEmpty()) return NS_OK; + + // With a valid PresContext we can get the ESM + // and register the access key + EventStateManager* esm = PresContext()->EventStateManager(); + + uint32_t key = accessKey.First(); + if (aDoReg) + esm->RegisterAccessKey(mContent->AsElement(), key); + else + esm->UnregisterAccessKey(mContent->AsElement(), key); + + return NS_OK; +} + +///////////////////////////////////////////////////////////////////////////// +// nsIFrame + +void nsXULLabelFrame::Init(nsIContent* aContent, nsContainerFrame* aParent, + nsIFrame* aPrevInFlow) { + nsBlockFrame::Init(aContent, aParent, aPrevInFlow); + + // register access key + RegUnregAccessKey(true); +} + +void nsXULLabelFrame::DestroyFrom(nsIFrame* aDestructRoot, + PostDestroyData& aPostDestroyData) { + // unregister access key + RegUnregAccessKey(false); + nsBlockFrame::DestroyFrom(aDestructRoot, aPostDestroyData); +} + +nsresult nsXULLabelFrame::AttributeChanged(int32_t aNameSpaceID, + nsAtom* aAttribute, + int32_t aModType) { + nsresult rv = + nsBlockFrame::AttributeChanged(aNameSpaceID, aAttribute, aModType); + + // If the accesskey changed, register for the new value + // The old value has been unregistered in nsXULElement::SetAttr + if (aAttribute == nsGkAtoms::accesskey || aAttribute == nsGkAtoms::control) + RegUnregAccessKey(true); + + return rv; +} + +///////////////////////////////////////////////////////////////////////////// +// Diagnostics + +#ifdef DEBUG_FRAME_DUMP +nsresult nsXULLabelFrame::GetFrameName(nsAString& aResult) const { + return MakeFrameName(u"XULLabel"_ns, aResult); +} +#endif |