The Tor Browser / annotate

layout/xul/nsScrollBoxFrame.cpp@7e26c7da4463 (annotated)

layout/xul/nsScrollBoxFrame.cpp

Wed, 31 Dec 2014 06:55:50 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Wed, 31 Dec 2014 06:55:50 +0100
changeset 2
7e26c7da4463
permissions
-rw-r--r--

Added tag UPSTREAM_283F7C6 for changeset ca08bd8f51b2

michael@0 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0 2 /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0 3 * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0 5
michael@0 6 #include "nsCOMPtr.h"
michael@0 7 #include "nsPresContext.h"
michael@0 8 #include "nsGkAtoms.h"
michael@0 9 #include "nsButtonBoxFrame.h"
michael@0 10 #include "nsITimer.h"
michael@0 11 #include "nsRepeatService.h"
michael@0 12 #include "mozilla/MouseEvents.h"
michael@0 13 #include "nsIContent.h"
michael@0 14
michael@0 15 using namespace mozilla;
michael@0 16
michael@0 17 class nsAutoRepeatBoxFrame : public nsButtonBoxFrame
michael@0 18 {
michael@0 19 public:
michael@0 20 NS_DECL_FRAMEARENA_HELPERS
michael@0 21
michael@0 22 friend nsIFrame* NS_NewAutoRepeatBoxFrame(nsIPresShell* aPresShell,
michael@0 23 nsStyleContext* aContext);
michael@0 24
michael@0 25 virtual void DestroyFrom(nsIFrame* aDestructRoot) MOZ_OVERRIDE;
michael@0 26
michael@0 27 virtual nsresult AttributeChanged(int32_t aNameSpaceID,
michael@0 28 nsIAtom* aAttribute,
michael@0 29 int32_t aModType) MOZ_OVERRIDE;
michael@0 30
michael@0 31 virtual nsresult HandleEvent(nsPresContext* aPresContext,
michael@0 32 WidgetGUIEvent* aEvent,
michael@0 33 nsEventStatus* aEventStatus) MOZ_OVERRIDE;
michael@0 34
michael@0 35 NS_IMETHOD HandlePress(nsPresContext* aPresContext,
michael@0 36 WidgetGUIEvent* aEvent,
michael@0 37 nsEventStatus* aEventStatus) MOZ_OVERRIDE;
michael@0 38
michael@0 39 NS_IMETHOD HandleRelease(nsPresContext* aPresContext,
michael@0 40 WidgetGUIEvent* aEvent,
michael@0 41 nsEventStatus* aEventStatus) MOZ_OVERRIDE;
michael@0 42
michael@0 43 protected:
michael@0 44 nsAutoRepeatBoxFrame(nsIPresShell* aPresShell, nsStyleContext* aContext):
michael@0 45 nsButtonBoxFrame(aPresShell, aContext) {}
michael@0 46
michael@0 47 void StartRepeat() {
michael@0 48 if (IsActivatedOnHover()) {
michael@0 49 // No initial delay on hover.
michael@0 50 nsRepeatService::GetInstance()->Start(Notify, this, 0);
michael@0 51 } else {
michael@0 52 nsRepeatService::GetInstance()->Start(Notify, this);
michael@0 53 }
michael@0 54 }
michael@0 55 void StopRepeat() {
michael@0 56 nsRepeatService::GetInstance()->Stop(Notify, this);
michael@0 57 }
michael@0 58 void Notify();
michael@0 59 static void Notify(void* aData) {
michael@0 60 static_cast<nsAutoRepeatBoxFrame*>(aData)->Notify();
michael@0 61 }
michael@0 62
michael@0 63 bool mTrustedEvent;
michael@0 64
michael@0 65 bool IsActivatedOnHover();
michael@0 66 };
michael@0 67
michael@0 68 nsIFrame*
michael@0 69 NS_NewAutoRepeatBoxFrame (nsIPresShell* aPresShell, nsStyleContext* aContext)
michael@0 70 {
michael@0 71 return new (aPresShell) nsAutoRepeatBoxFrame (aPresShell, aContext);
michael@0 72 }
michael@0 73
michael@0 74 NS_IMPL_FRAMEARENA_HELPERS(nsAutoRepeatBoxFrame)
michael@0 75
michael@0 76 nsresult
michael@0 77 nsAutoRepeatBoxFrame::HandleEvent(nsPresContext* aPresContext,
michael@0 78 WidgetGUIEvent* aEvent,
michael@0 79 nsEventStatus* aEventStatus)
michael@0 80 {
michael@0 81 NS_ENSURE_ARG_POINTER(aEventStatus);
michael@0 82 if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
michael@0 83 return NS_OK;
michael@0 84 }
michael@0 85
michael@0 86 switch(aEvent->message)
michael@0 87 {
michael@0 88 // repeat mode may be "hover" for repeating while the mouse is hovering
michael@0 89 // over the element, otherwise repetition is done while the element is
michael@0 90 // active (pressed).
michael@0 91 case NS_MOUSE_ENTER:
michael@0 92 case NS_MOUSE_ENTER_SYNTH:
michael@0 93 if (IsActivatedOnHover()) {
michael@0 94 StartRepeat();
michael@0 95 mTrustedEvent = aEvent->mFlags.mIsTrusted;
michael@0 96 }
michael@0 97 break;
michael@0 98
michael@0 99 case NS_MOUSE_EXIT:
michael@0 100 case NS_MOUSE_EXIT_SYNTH:
michael@0 101 // always stop on mouse exit
michael@0 102 StopRepeat();
michael@0 103 // Not really necessary but do this to be safe
michael@0 104 mTrustedEvent = false;
michael@0 105 break;
michael@0 106
michael@0 107 case NS_MOUSE_CLICK: {
michael@0 108 WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
michael@0 109 if (mouseEvent->IsLeftClickEvent()) {
michael@0 110 // skip button frame handling to prevent click handling
michael@0 111 return nsBoxFrame::HandleEvent(aPresContext, mouseEvent, aEventStatus);
michael@0 112 }
michael@0 113 break;
michael@0 114 }
michael@0 115 }
michael@0 116
michael@0 117 return nsButtonBoxFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
michael@0 118 }
michael@0 119
michael@0 120 NS_IMETHODIMP
michael@0 121 nsAutoRepeatBoxFrame::HandlePress(nsPresContext* aPresContext,
michael@0 122 WidgetGUIEvent* aEvent,
michael@0 123 nsEventStatus* aEventStatus)
michael@0 124 {
michael@0 125 if (!IsActivatedOnHover()) {
michael@0 126 StartRepeat();
michael@0 127 mTrustedEvent = aEvent->mFlags.mIsTrusted;
michael@0 128 DoMouseClick(aEvent, mTrustedEvent);
michael@0 129 }
michael@0 130
michael@0 131 return NS_OK;
michael@0 132 }
michael@0 133
michael@0 134 NS_IMETHODIMP
michael@0 135 nsAutoRepeatBoxFrame::HandleRelease(nsPresContext* aPresContext,
michael@0 136 WidgetGUIEvent* aEvent,
michael@0 137 nsEventStatus* aEventStatus)
michael@0 138 {
michael@0 139 if (!IsActivatedOnHover()) {
michael@0 140 StopRepeat();
michael@0 141 }
michael@0 142 return NS_OK;
michael@0 143 }
michael@0 144
michael@0 145 nsresult
michael@0 146 nsAutoRepeatBoxFrame::AttributeChanged(int32_t aNameSpaceID,
michael@0 147 nsIAtom* aAttribute,
michael@0 148 int32_t aModType)
michael@0 149 {
michael@0 150 if (aAttribute == nsGkAtoms::type) {
michael@0 151 StopRepeat();
michael@0 152 }
michael@0 153 return NS_OK;
michael@0 154 }
michael@0 155
michael@0 156 void
michael@0 157 nsAutoRepeatBoxFrame::Notify()
michael@0 158 {
michael@0 159 DoMouseClick(nullptr, mTrustedEvent);
michael@0 160 }
michael@0 161
michael@0 162 void
michael@0 163 nsAutoRepeatBoxFrame::DestroyFrom(nsIFrame* aDestructRoot)
michael@0 164 {
michael@0 165 // Ensure our repeat service isn't going... it's possible that a scrollbar can disappear out
michael@0 166 // from under you while you're in the process of scrolling.
michael@0 167 StopRepeat();
michael@0 168 nsButtonBoxFrame::DestroyFrom(aDestructRoot);
michael@0 169 }
michael@0 170
michael@0 171 bool
michael@0 172 nsAutoRepeatBoxFrame::IsActivatedOnHover()
michael@0 173 {
michael@0 174 return mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::repeat,
michael@0 175 nsGkAtoms::hover, eCaseMatters);
michael@0 176 }

Mercurial Repository: The Tor Browser

Europalab SCM Repository Server

mercurial