1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/dom/xbl/nsXBLEventHandler.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,183 @@
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 "nsIAtom.h"
1.11 +#include "nsIDOMEventListener.h"
1.12 +#include "nsIDOMKeyEvent.h"
1.13 +#include "nsIDOMMouseEvent.h"
1.14 +#include "nsXBLPrototypeHandler.h"
1.15 +#include "nsContentUtils.h"
1.16 +#include "mozilla/dom/Event.h" // for nsIDOMEvent::InternalDOMEvent()
1.17 +#include "mozilla/dom/EventTarget.h"
1.18 +
1.19 +using namespace mozilla::dom;
1.20 +
1.21 +nsXBLEventHandler::nsXBLEventHandler(nsXBLPrototypeHandler* aHandler)
1.22 + : mProtoHandler(aHandler)
1.23 +{
1.24 +}
1.25 +
1.26 +nsXBLEventHandler::~nsXBLEventHandler()
1.27 +{
1.28 +}
1.29 +
1.30 +NS_IMPL_ISUPPORTS(nsXBLEventHandler, nsIDOMEventListener)
1.31 +
1.32 +NS_IMETHODIMP
1.33 +nsXBLEventHandler::HandleEvent(nsIDOMEvent* aEvent)
1.34 +{
1.35 + if (!mProtoHandler)
1.36 + return NS_ERROR_FAILURE;
1.37 +
1.38 + uint8_t phase = mProtoHandler->GetPhase();
1.39 + if (phase == NS_PHASE_TARGET) {
1.40 + uint16_t eventPhase;
1.41 + aEvent->GetEventPhase(&eventPhase);
1.42 + if (eventPhase != nsIDOMEvent::AT_TARGET)
1.43 + return NS_OK;
1.44 + }
1.45 +
1.46 + if (!EventMatched(aEvent))
1.47 + return NS_OK;
1.48 +
1.49 + mProtoHandler->ExecuteHandler(aEvent->InternalDOMEvent()->GetCurrentTarget(),
1.50 + aEvent);
1.51 +
1.52 + return NS_OK;
1.53 +}
1.54 +
1.55 +nsXBLMouseEventHandler::nsXBLMouseEventHandler(nsXBLPrototypeHandler* aHandler)
1.56 + : nsXBLEventHandler(aHandler)
1.57 +{
1.58 +}
1.59 +
1.60 +nsXBLMouseEventHandler::~nsXBLMouseEventHandler()
1.61 +{
1.62 +}
1.63 +
1.64 +bool
1.65 +nsXBLMouseEventHandler::EventMatched(nsIDOMEvent* aEvent)
1.66 +{
1.67 + nsCOMPtr<nsIDOMMouseEvent> mouse(do_QueryInterface(aEvent));
1.68 + return mouse && mProtoHandler->MouseEventMatched(mouse);
1.69 +}
1.70 +
1.71 +nsXBLKeyEventHandler::nsXBLKeyEventHandler(nsIAtom* aEventType, uint8_t aPhase,
1.72 + uint8_t aType)
1.73 + : mEventType(aEventType),
1.74 + mPhase(aPhase),
1.75 + mType(aType),
1.76 + mIsBoundToChrome(false),
1.77 + mUsingXBLScope(false)
1.78 +{
1.79 +}
1.80 +
1.81 +nsXBLKeyEventHandler::~nsXBLKeyEventHandler()
1.82 +{
1.83 +}
1.84 +
1.85 +NS_IMPL_ISUPPORTS(nsXBLKeyEventHandler, nsIDOMEventListener)
1.86 +
1.87 +bool
1.88 +nsXBLKeyEventHandler::ExecuteMatchedHandlers(nsIDOMKeyEvent* aKeyEvent,
1.89 + uint32_t aCharCode,
1.90 + bool aIgnoreShiftKey)
1.91 +{
1.92 + bool trustedEvent = false;
1.93 + aKeyEvent->GetIsTrusted(&trustedEvent);
1.94 +
1.95 + nsCOMPtr<EventTarget> target = aKeyEvent->InternalDOMEvent()->GetCurrentTarget();
1.96 +
1.97 + bool executed = false;
1.98 + for (uint32_t i = 0; i < mProtoHandlers.Length(); ++i) {
1.99 + nsXBLPrototypeHandler* handler = mProtoHandlers[i];
1.100 + bool hasAllowUntrustedAttr = handler->HasAllowUntrustedAttr();
1.101 + if ((trustedEvent ||
1.102 + (hasAllowUntrustedAttr && handler->AllowUntrustedEvents()) ||
1.103 + (!hasAllowUntrustedAttr && !mIsBoundToChrome && !mUsingXBLScope)) &&
1.104 + handler->KeyEventMatched(aKeyEvent, aCharCode, aIgnoreShiftKey)) {
1.105 + handler->ExecuteHandler(target, aKeyEvent);
1.106 + executed = true;
1.107 + }
1.108 + }
1.109 + return executed;
1.110 +}
1.111 +
1.112 +NS_IMETHODIMP
1.113 +nsXBLKeyEventHandler::HandleEvent(nsIDOMEvent* aEvent)
1.114 +{
1.115 + uint32_t count = mProtoHandlers.Length();
1.116 + if (count == 0)
1.117 + return NS_ERROR_FAILURE;
1.118 +
1.119 + if (mPhase == NS_PHASE_TARGET) {
1.120 + uint16_t eventPhase;
1.121 + aEvent->GetEventPhase(&eventPhase);
1.122 + if (eventPhase != nsIDOMEvent::AT_TARGET)
1.123 + return NS_OK;
1.124 + }
1.125 +
1.126 + nsCOMPtr<nsIDOMKeyEvent> key(do_QueryInterface(aEvent));
1.127 + if (!key)
1.128 + return NS_OK;
1.129 +
1.130 + nsAutoTArray<nsShortcutCandidate, 10> accessKeys;
1.131 + nsContentUtils::GetAccelKeyCandidates(key, accessKeys);
1.132 +
1.133 + if (accessKeys.IsEmpty()) {
1.134 + ExecuteMatchedHandlers(key, 0, false);
1.135 + return NS_OK;
1.136 + }
1.137 +
1.138 + for (uint32_t i = 0; i < accessKeys.Length(); ++i) {
1.139 + if (ExecuteMatchedHandlers(key, accessKeys[i].mCharCode,
1.140 + accessKeys[i].mIgnoreShift))
1.141 + return NS_OK;
1.142 + }
1.143 + return NS_OK;
1.144 +}
1.145 +
1.146 +///////////////////////////////////////////////////////////////////////////////////
1.147 +
1.148 +nsresult
1.149 +NS_NewXBLEventHandler(nsXBLPrototypeHandler* aHandler,
1.150 + nsIAtom* aEventType,
1.151 + nsXBLEventHandler** aResult)
1.152 +{
1.153 + switch (nsContentUtils::GetEventCategory(nsDependentAtomString(aEventType))) {
1.154 + case NS_DRAG_EVENT:
1.155 + case NS_MOUSE_EVENT:
1.156 + case NS_MOUSE_SCROLL_EVENT:
1.157 + case NS_WHEEL_EVENT:
1.158 + case NS_SIMPLE_GESTURE_EVENT:
1.159 + *aResult = new nsXBLMouseEventHandler(aHandler);
1.160 + break;
1.161 + default:
1.162 + *aResult = new nsXBLEventHandler(aHandler);
1.163 + break;
1.164 + }
1.165 +
1.166 + if (!*aResult)
1.167 + return NS_ERROR_OUT_OF_MEMORY;
1.168 +
1.169 + NS_ADDREF(*aResult);
1.170 +
1.171 + return NS_OK;
1.172 +}
1.173 +
1.174 +nsresult
1.175 +NS_NewXBLKeyEventHandler(nsIAtom* aEventType, uint8_t aPhase, uint8_t aType,
1.176 + nsXBLKeyEventHandler** aResult)
1.177 +{
1.178 + *aResult = new nsXBLKeyEventHandler(aEventType, aPhase, aType);
1.179 +
1.180 + if (!*aResult)
1.181 + return NS_ERROR_OUT_OF_MEMORY;
1.182 +
1.183 + NS_ADDREF(*aResult);
1.184 +
1.185 + return NS_OK;
1.186 +}
