зеркало из https://github.com/mozilla/gecko-dev.git
97 строки
3.3 KiB
C++
97 строки
3.3 KiB
C++
/* -*- 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(NS_LITERAL_STRING("XULLabel"), aResult);
|
|
}
|
|
#endif
|