1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
/* -*- 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/. */
#include "nsCOMPtr.h"
#include "nsButtonBoxFrame.h"
#include "nsIContent.h"
#include "nsIDOMNodeList.h"
#include "nsIDOMXULButtonElement.h"
#include "nsGkAtoms.h"
#include "nsNameSpaceManager.h"
#include "nsPresContext.h"
#include "nsIPresShell.h"
#include "nsIDOMElement.h"
#include "nsIDOMEvent.h"
#include "nsDisplayList.h"
#include "nsContentUtils.h"
#include "mozilla/dom/Element.h"
#include "mozilla/EventStateManager.h"
#include "mozilla/EventStates.h"
#include "mozilla/MouseEvents.h"
#include "mozilla/TextEvents.h"
using namespace mozilla;
NS_IMPL_ISUPPORTS(nsButtonBoxFrame::nsButtonBoxListener, nsIDOMEventListener)
nsresult
nsButtonBoxFrame::nsButtonBoxListener::HandleEvent(nsIDOMEvent* aEvent)
{
if (!mButtonBoxFrame) {
return NS_OK;
}
nsAutoString eventType;
aEvent->GetType(eventType);
if (eventType.EqualsLiteral("blur")) {
mButtonBoxFrame->Blurred();
return NS_OK;
}
NS_ABORT();
return NS_OK;
}
//
// NS_NewXULButtonFrame
//
// Creates a new Button frame and returns it
//
nsIFrame*
NS_NewButtonBoxFrame (nsIPresShell* aPresShell, nsStyleContext* aContext)
{
return new (aPresShell) nsButtonBoxFrame(aContext);
}
NS_IMPL_FRAMEARENA_HELPERS(nsButtonBoxFrame)
nsButtonBoxFrame::nsButtonBoxFrame(nsStyleContext* aContext) :
nsBoxFrame(aContext, false),
mButtonBoxListener(nullptr),
mIsHandlingKeyEvent(false)
{
UpdateMouseThrough();
}
void
nsButtonBoxFrame::Init(nsIContent* aContent,
nsContainerFrame* aParent,
nsIFrame* aPrevInFlow)
{
nsBoxFrame::Init(aContent, aParent, aPrevInFlow);
mButtonBoxListener = new nsButtonBoxListener(this);
mContent->AddSystemEventListener(NS_LITERAL_STRING("blur"), mButtonBoxListener, false);
}
void
nsButtonBoxFrame::DestroyFrom(nsIFrame* aDestructRoot)
{
mContent->RemoveSystemEventListener(NS_LITERAL_STRING("blur"), mButtonBoxListener, false);
mButtonBoxListener->mButtonBoxFrame = nullptr;
mButtonBoxListener = nullptr;
nsBoxFrame::DestroyFrom(aDestructRoot);
}
void
nsButtonBoxFrame::BuildDisplayListForChildren(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists)
{
// override, since we don't want children to get events
if (aBuilder->IsForEventDelivery())
return;
nsBoxFrame::BuildDisplayListForChildren(aBuilder, aLists);
}
nsresult
nsButtonBoxFrame::HandleEvent(nsPresContext* aPresContext,
WidgetGUIEvent* aEvent,
nsEventStatus* aEventStatus)
{
NS_ENSURE_ARG_POINTER(aEventStatus);
if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
return NS_OK;
}
switch (aEvent->mMessage) {
case eKeyDown: {
WidgetKeyboardEvent* keyEvent = aEvent->AsKeyboardEvent();
if (!keyEvent) {
break;
}
if (NS_VK_SPACE == keyEvent->mKeyCode) {
EventStateManager* esm = aPresContext->EventStateManager();
// :hover:active state
esm->SetContentState(mContent, NS_EVENT_STATE_HOVER);
esm->SetContentState(mContent, NS_EVENT_STATE_ACTIVE);
mIsHandlingKeyEvent = true;
}
break;
}
case eKeyPress: {
WidgetKeyboardEvent* keyEvent = aEvent->AsKeyboardEvent();
if (!keyEvent) {
break;
}
if (NS_VK_RETURN == keyEvent->mKeyCode) {
nsCOMPtr<nsIDOMXULButtonElement> buttonEl(do_QueryInterface(mContent));
if (buttonEl) {
MouseClicked(aEvent);
*aEventStatus = nsEventStatus_eConsumeNoDefault;
}
}
break;
}
case eKeyUp: {
WidgetKeyboardEvent* keyEvent = aEvent->AsKeyboardEvent();
if (!keyEvent) {
break;
}
if (NS_VK_SPACE == keyEvent->mKeyCode) {
mIsHandlingKeyEvent = false;
// only activate on keyup if we're already in the :hover:active state
NS_ASSERTION(mContent->IsElement(), "How do we have a non-element?");
EventStates buttonState = mContent->AsElement()->State();
if (buttonState.HasAllStates(NS_EVENT_STATE_ACTIVE |
NS_EVENT_STATE_HOVER)) {
// return to normal state
EventStateManager* esm = aPresContext->EventStateManager();
esm->SetContentState(nullptr, NS_EVENT_STATE_ACTIVE);
esm->SetContentState(nullptr, NS_EVENT_STATE_HOVER);
MouseClicked(aEvent);
}
}
break;
}
case eMouseClick: {
WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
if (mouseEvent->IsLeftClickEvent()) {
MouseClicked(mouseEvent);
}
break;
}
default:
break;
}
return nsBoxFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
}
void
nsButtonBoxFrame::Blurred()
{
NS_ASSERTION(mContent->IsElement(), "How do we have a non-element?");
EventStates buttonState = mContent->AsElement()->State();
if (mIsHandlingKeyEvent &&
buttonState.HasAllStates(NS_EVENT_STATE_ACTIVE |
NS_EVENT_STATE_HOVER)) {
// return to normal state
EventStateManager* esm = PresContext()->EventStateManager();
esm->SetContentState(nullptr, NS_EVENT_STATE_ACTIVE);
esm->SetContentState(nullptr, NS_EVENT_STATE_HOVER);
}
mIsHandlingKeyEvent = false;
}
void
nsButtonBoxFrame::DoMouseClick(WidgetGUIEvent* aEvent, bool aTrustEvent)
{
// Don't execute if we're disabled.
if (mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::disabled,
nsGkAtoms::_true, eCaseMatters))
return;
// Execute the oncommand event handler.
bool isShift = false;
bool isControl = false;
bool isAlt = false;
bool isMeta = false;
if(aEvent) {
WidgetInputEvent* inputEvent = aEvent->AsInputEvent();
isShift = inputEvent->IsShift();
isControl = inputEvent->IsControl();
isAlt = inputEvent->IsAlt();
isMeta = inputEvent->IsMeta();
}
// Have the content handle the event, propagating it according to normal DOM rules.
nsCOMPtr<nsIPresShell> shell = PresContext()->GetPresShell();
if (shell) {
nsContentUtils::DispatchXULCommand(mContent,
aEvent ?
aEvent->IsTrusted() : aTrustEvent,
nullptr, shell,
isControl, isAlt, isShift, isMeta);
}
}
|
