1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/xul/nsXULLabelFrame.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,116 @@
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 +/* derived class of nsBlockFrame used for xul:label elements */
1.10 +
1.11 +#include "mozilla/EventStateManager.h"
1.12 +#include "nsXULLabelFrame.h"
1.13 +#include "nsHTMLParts.h"
1.14 +#include "nsNameSpaceManager.h"
1.15 +
1.16 +using namespace mozilla;
1.17 +
1.18 +nsIFrame*
1.19 +NS_NewXULLabelFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
1.20 +{
1.21 + nsXULLabelFrame* it = new (aPresShell) nsXULLabelFrame(aContext);
1.22 +
1.23 + it->SetFlags(NS_BLOCK_FLOAT_MGR | NS_BLOCK_MARGIN_ROOT);
1.24 +
1.25 + return it;
1.26 +}
1.27 +
1.28 +NS_IMPL_FRAMEARENA_HELPERS(nsXULLabelFrame)
1.29 +
1.30 +// If you make changes to this function, check its counterparts
1.31 +// in nsBoxFrame and nsTextBoxFrame
1.32 +nsresult
1.33 +nsXULLabelFrame::RegUnregAccessKey(bool aDoReg)
1.34 +{
1.35 + // if we have no content, we can't do anything
1.36 + if (!mContent)
1.37 + return NS_ERROR_FAILURE;
1.38 +
1.39 + // To filter out <label>s without a control attribute.
1.40 + // XXXjag a side-effect is that we filter out anonymous <label>s
1.41 + // in e.g. <menu>, <menuitem>, <button>. These <label>s inherit
1.42 + // |accesskey| and would otherwise register themselves, overwriting
1.43 + // the content we really meant to be registered.
1.44 + if (!mContent->HasAttr(kNameSpaceID_None, nsGkAtoms::control))
1.45 + return NS_OK;
1.46 +
1.47 + nsAutoString accessKey;
1.48 + mContent->GetAttr(kNameSpaceID_None, nsGkAtoms::accesskey, accessKey);
1.49 +
1.50 + if (accessKey.IsEmpty())
1.51 + return NS_OK;
1.52 +
1.53 + // With a valid PresContext we can get the ESM
1.54 + // and register the access key
1.55 + EventStateManager* esm = PresContext()->EventStateManager();
1.56 +
1.57 + uint32_t key = accessKey.First();
1.58 + if (aDoReg)
1.59 + esm->RegisterAccessKey(mContent, key);
1.60 + else
1.61 + esm->UnregisterAccessKey(mContent, key);
1.62 +
1.63 + return NS_OK;
1.64 +}
1.65 +
1.66 +/////////////////////////////////////////////////////////////////////////////
1.67 +// nsIFrame
1.68 +
1.69 +void
1.70 +nsXULLabelFrame::Init(nsIContent* aContent,
1.71 + nsIFrame* aParent,
1.72 + nsIFrame* aPrevInFlow)
1.73 +{
1.74 + nsBlockFrame::Init(aContent, aParent, aPrevInFlow);
1.75 +
1.76 + // register access key
1.77 + RegUnregAccessKey(true);
1.78 +}
1.79 +
1.80 +void
1.81 +nsXULLabelFrame::DestroyFrom(nsIFrame* aDestructRoot)
1.82 +{
1.83 + // unregister access key
1.84 + RegUnregAccessKey(false);
1.85 + nsBlockFrame::DestroyFrom(aDestructRoot);
1.86 +}
1.87 +
1.88 +nsresult
1.89 +nsXULLabelFrame::AttributeChanged(int32_t aNameSpaceID,
1.90 + nsIAtom* aAttribute,
1.91 + int32_t aModType)
1.92 +{
1.93 + nsresult rv = nsBlockFrame::AttributeChanged(aNameSpaceID,
1.94 + aAttribute, aModType);
1.95 +
1.96 + // If the accesskey changed, register for the new value
1.97 + // The old value has been unregistered in nsXULElement::SetAttr
1.98 + if (aAttribute == nsGkAtoms::accesskey || aAttribute == nsGkAtoms::control)
1.99 + RegUnregAccessKey(true);
1.100 +
1.101 + return rv;
1.102 +}
1.103 +
1.104 +nsIAtom*
1.105 +nsXULLabelFrame::GetType() const
1.106 +{
1.107 + return nsGkAtoms::XULLabelFrame;
1.108 +}
1.109 +
1.110 +/////////////////////////////////////////////////////////////////////////////
1.111 +// Diagnostics
1.112 +
1.113 +#ifdef DEBUG_FRAME_DUMP
1.114 +nsresult
1.115 +nsXULLabelFrame::GetFrameName(nsAString& aResult) const
1.116 +{
1.117 + return MakeFrameName(NS_LITERAL_STRING("XULLabel"), aResult);
1.118 +}
1.119 +#endif
