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authorMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
committerMatt A. Tobin <mattatobin@localhost.localdomain>2018-02-02 04:16:08 -0500
commit5f8de423f190bbb79a62f804151bc24824fa32d8 (patch)
tree10027f336435511475e392454359edea8e25895d /layout/xul/nsXULLabelFrame.cpp
parent49ee0794b5d912db1f95dce6eb52d781dc210db5 (diff)
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Add m-esr52 at 52.6.0
Diffstat (limited to 'layout/xul/nsXULLabelFrame.cpp')
-rw-r--r--layout/xul/nsXULLabelFrame.cpp116
1 files changed, 116 insertions, 0 deletions
diff --git a/layout/xul/nsXULLabelFrame.cpp b/layout/xul/nsXULLabelFrame.cpp
new file mode 100644
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+++ b/layout/xul/nsXULLabelFrame.cpp
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "mozilla/EventStateManager.h"
+#include "nsXULLabelFrame.h"
+#include "nsHTMLParts.h"
+#include "nsNameSpaceManager.h"
+
+using namespace mozilla;
+
+nsIFrame*
+NS_NewXULLabelFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
+{
+ nsXULLabelFrame* it = new (aPresShell) nsXULLabelFrame(aContext);
+
+ it->AddStateBits(NS_BLOCK_FLOAT_MGR | NS_BLOCK_MARGIN_ROOT);
+
+ 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)
+{
+ // if we have no content, we can't do anything
+ if (!mContent)
+ return NS_ERROR_FAILURE;
+
+ // 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->HasAttr(kNameSpaceID_None, nsGkAtoms::control))
+ return NS_OK;
+
+ nsAutoString accessKey;
+ mContent->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, key);
+ else
+ esm->UnregisterAccessKey(mContent, 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)
+{
+ // unregister access key
+ RegUnregAccessKey(false);
+ nsBlockFrame::DestroyFrom(aDestructRoot);
+}
+
+nsresult
+nsXULLabelFrame::AttributeChanged(int32_t aNameSpaceID,
+ nsIAtom* 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;
+}
+
+nsIAtom*
+nsXULLabelFrame::GetType() const
+{
+ return nsGkAtoms::XULLabelFrame;
+}
+
+/////////////////////////////////////////////////////////////////////////////
+// Diagnostics
+
+#ifdef DEBUG_FRAME_DUMP
+nsresult
+nsXULLabelFrame::GetFrameName(nsAString& aResult) const
+{
+ return MakeFrameName(NS_LITERAL_STRING("XULLabel"), aResult);
+}
+#endif