1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/layout/xul/nsScrollBoxFrame.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,176 @@
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 "nsCOMPtr.h"
1.10 +#include "nsPresContext.h"
1.11 +#include "nsGkAtoms.h"
1.12 +#include "nsButtonBoxFrame.h"
1.13 +#include "nsITimer.h"
1.14 +#include "nsRepeatService.h"
1.15 +#include "mozilla/MouseEvents.h"
1.16 +#include "nsIContent.h"
1.17 +
1.18 +using namespace mozilla;
1.19 +
1.20 +class nsAutoRepeatBoxFrame : public nsButtonBoxFrame
1.21 +{
1.22 +public:
1.23 + NS_DECL_FRAMEARENA_HELPERS
1.24 +
1.25 + friend nsIFrame* NS_NewAutoRepeatBoxFrame(nsIPresShell* aPresShell,
1.26 + nsStyleContext* aContext);
1.27 +
1.28 + virtual void DestroyFrom(nsIFrame* aDestructRoot) MOZ_OVERRIDE;
1.29 +
1.30 + virtual nsresult AttributeChanged(int32_t aNameSpaceID,
1.31 + nsIAtom* aAttribute,
1.32 + int32_t aModType) MOZ_OVERRIDE;
1.33 +
1.34 + virtual nsresult HandleEvent(nsPresContext* aPresContext,
1.35 + WidgetGUIEvent* aEvent,
1.36 + nsEventStatus* aEventStatus) MOZ_OVERRIDE;
1.37 +
1.38 + NS_IMETHOD HandlePress(nsPresContext* aPresContext,
1.39 + WidgetGUIEvent* aEvent,
1.40 + nsEventStatus* aEventStatus) MOZ_OVERRIDE;
1.41 +
1.42 + NS_IMETHOD HandleRelease(nsPresContext* aPresContext,
1.43 + WidgetGUIEvent* aEvent,
1.44 + nsEventStatus* aEventStatus) MOZ_OVERRIDE;
1.45 +
1.46 +protected:
1.47 + nsAutoRepeatBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext):
1.48 + nsButtonBoxFrame(aPresShell, aContext) {}
1.49 +
1.50 + void StartRepeat() {
1.51 + if (IsActivatedOnHover()) {
1.52 + // No initial delay on hover.
1.53 + nsRepeatService::GetInstance()->Start(Notify, this, 0);
1.54 + } else {
1.55 + nsRepeatService::GetInstance()->Start(Notify, this);
1.56 + }
1.57 + }
1.58 + void StopRepeat() {
1.59 + nsRepeatService::GetInstance()->Stop(Notify, this);
1.60 + }
1.61 + void Notify();
1.62 + static void Notify(void* aData) {
1.63 + static_cast<nsAutoRepeatBoxFrame*>(aData)->Notify();
1.64 + }
1.65 +
1.66 + bool mTrustedEvent;
1.67 +
1.68 + bool IsActivatedOnHover();
1.69 +};
1.70 +
1.71 +nsIFrame*
1.72 +NS_NewAutoRepeatBoxFrame (nsIPresShell* aPresShell, nsStyleContext* aContext)
1.73 +{
1.74 + return new (aPresShell) nsAutoRepeatBoxFrame (aPresShell, aContext);
1.75 +}
1.76 +
1.77 +NS_IMPL_FRAMEARENA_HELPERS(nsAutoRepeatBoxFrame)
1.78 +
1.79 +nsresult
1.80 +nsAutoRepeatBoxFrame::HandleEvent(nsPresContext* aPresContext,
1.81 + WidgetGUIEvent* aEvent,
1.82 + nsEventStatus* aEventStatus)
1.83 +{
1.84 + NS_ENSURE_ARG_POINTER(aEventStatus);
1.85 + if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
1.86 + return NS_OK;
1.87 + }
1.88 +
1.89 + switch(aEvent->message)
1.90 + {
1.91 + // repeat mode may be "hover" for repeating while the mouse is hovering
1.92 + // over the element, otherwise repetition is done while the element is
1.93 + // active (pressed).
1.94 + case NS_MOUSE_ENTER:
1.95 + case NS_MOUSE_ENTER_SYNTH:
1.96 + if (IsActivatedOnHover()) {
1.97 + StartRepeat();
1.98 + mTrustedEvent = aEvent->mFlags.mIsTrusted;
1.99 + }
1.100 + break;
1.101 +
1.102 + case NS_MOUSE_EXIT:
1.103 + case NS_MOUSE_EXIT_SYNTH:
1.104 + // always stop on mouse exit
1.105 + StopRepeat();
1.106 + // Not really necessary but do this to be safe
1.107 + mTrustedEvent = false;
1.108 + break;
1.109 +
1.110 + case NS_MOUSE_CLICK: {
1.111 + WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
1.112 + if (mouseEvent->IsLeftClickEvent()) {
1.113 + // skip button frame handling to prevent click handling
1.114 + return nsBoxFrame::HandleEvent(aPresContext, mouseEvent, aEventStatus);
1.115 + }
1.116 + break;
1.117 + }
1.118 + }
1.119 +
1.120 + return nsButtonBoxFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
1.121 +}
1.122 +
1.123 +NS_IMETHODIMP
1.124 +nsAutoRepeatBoxFrame::HandlePress(nsPresContext* aPresContext,
1.125 + WidgetGUIEvent* aEvent,
1.126 + nsEventStatus* aEventStatus)
1.127 +{
1.128 + if (!IsActivatedOnHover()) {
1.129 + StartRepeat();
1.130 + mTrustedEvent = aEvent->mFlags.mIsTrusted;
1.131 + DoMouseClick(aEvent, mTrustedEvent);
1.132 + }
1.133 +
1.134 + return NS_OK;
1.135 +}
1.136 +
1.137 +NS_IMETHODIMP
1.138 +nsAutoRepeatBoxFrame::HandleRelease(nsPresContext* aPresContext,
1.139 + WidgetGUIEvent* aEvent,
1.140 + nsEventStatus* aEventStatus)
1.141 +{
1.142 + if (!IsActivatedOnHover()) {
1.143 + StopRepeat();
1.144 + }
1.145 + return NS_OK;
1.146 +}
1.147 +
1.148 +nsresult
1.149 +nsAutoRepeatBoxFrame::AttributeChanged(int32_t aNameSpaceID,
1.150 + nsIAtom* aAttribute,
1.151 + int32_t aModType)
1.152 +{
1.153 + if (aAttribute == nsGkAtoms::type) {
1.154 + StopRepeat();
1.155 + }
1.156 + return NS_OK;
1.157 +}
1.158 +
1.159 +void
1.160 +nsAutoRepeatBoxFrame::Notify()
1.161 +{
1.162 + DoMouseClick(nullptr, mTrustedEvent);
1.163 +}
1.164 +
1.165 +void
1.166 +nsAutoRepeatBoxFrame::DestroyFrom(nsIFrame* aDestructRoot)
1.167 +{
1.168 + // Ensure our repeat service isn't going... it's possible that a scrollbar can disappear out
1.169 + // from under you while you're in the process of scrolling.
1.170 + StopRepeat();
1.171 + nsButtonBoxFrame::DestroyFrom(aDestructRoot);
1.172 +}
1.173 +
1.174 +bool
1.175 +nsAutoRepeatBoxFrame::IsActivatedOnHover()
1.176 +{
1.177 + return mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::repeat,
1.178 + nsGkAtoms::hover, eCaseMatters);
1.179 +}
