forked from mirrors/gecko-dev
e9d6280e92
For inserting text from OS in special cases, e.g., when inserting 2 or more characters per keydown or inserting text without key press, we use a set of composition events on macOS, but the other browsers don't use composition events. Instead, they expose only `beforeinput` event and `input` event. We should follow their behavior for web-compat because `beforeinput` events for IME composition are never cancelable, but the `beforeinput` events for the cases are cancelable of the other browsers. Differential Revision: https://phabricator.services.mozilla.com/D114826
148 lines
4.7 KiB
C++
148 lines
4.7 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_MiscEvents_h__
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#define mozilla_MiscEvents_h__
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#include <stdint.h>
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#include "mozilla/BasicEvents.h"
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#include "mozilla/Maybe.h"
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#include "nsCOMPtr.h"
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#include "nsAtom.h"
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#include "nsGkAtoms.h"
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#include "nsITransferable.h"
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#include "nsString.h"
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namespace mozilla {
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namespace dom {
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class PBrowserParent;
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class PBrowserChild;
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} // namespace dom
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/******************************************************************************
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* mozilla::WidgetContentCommandEvent
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******************************************************************************/
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class WidgetContentCommandEvent : public WidgetGUIEvent {
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public:
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virtual WidgetContentCommandEvent* AsContentCommandEvent() override {
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return this;
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}
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WidgetContentCommandEvent(bool aIsTrusted, EventMessage aMessage,
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nsIWidget* aWidget, bool aOnlyEnabledCheck = false)
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: WidgetGUIEvent(aIsTrusted, aMessage, aWidget,
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eContentCommandEventClass),
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mOnlyEnabledCheck(aOnlyEnabledCheck),
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mSucceeded(false),
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mIsEnabled(false) {}
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virtual WidgetEvent* Duplicate() const override {
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// This event isn't an internal event of any DOM event.
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NS_ASSERTION(!IsAllowedToDispatchDOMEvent(),
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"WidgetQueryContentEvent needs to support Duplicate()");
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MOZ_CRASH("WidgetQueryContentEvent doesn't support Duplicate()");
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return nullptr;
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}
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// eContentCommandInsertText
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mozilla::Maybe<nsString> mString; // [in]
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// eContentCommandPasteTransferable
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nsCOMPtr<nsITransferable> mTransferable; // [in]
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// eContentCommandScroll
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// for mScroll.mUnit
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enum { eCmdScrollUnit_Line, eCmdScrollUnit_Page, eCmdScrollUnit_Whole };
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struct ScrollInfo {
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ScrollInfo()
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: mAmount(0), mUnit(eCmdScrollUnit_Line), mIsHorizontal(false) {}
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int32_t mAmount; // [in]
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uint8_t mUnit; // [in]
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bool mIsHorizontal; // [in]
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} mScroll;
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bool mOnlyEnabledCheck; // [in]
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bool mSucceeded; // [out]
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bool mIsEnabled; // [out]
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void AssignContentCommandEventData(const WidgetContentCommandEvent& aEvent,
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bool aCopyTargets) {
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AssignGUIEventData(aEvent, aCopyTargets);
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mString = aEvent.mString;
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mScroll = aEvent.mScroll;
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mOnlyEnabledCheck = aEvent.mOnlyEnabledCheck;
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mSucceeded = aEvent.mSucceeded;
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mIsEnabled = aEvent.mIsEnabled;
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}
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};
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/******************************************************************************
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* mozilla::WidgetCommandEvent
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*
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* This sends a command to chrome. If you want to request what is performed
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* in focused content, you should use WidgetContentCommandEvent instead.
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*
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* XXX Should be |WidgetChromeCommandEvent|?
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******************************************************************************/
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class WidgetCommandEvent : public WidgetGUIEvent {
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public:
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virtual WidgetCommandEvent* AsCommandEvent() override { return this; }
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protected:
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WidgetCommandEvent(bool aIsTrusted, nsAtom* aEventType, nsAtom* aCommand,
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nsIWidget* aWidget)
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: WidgetGUIEvent(aIsTrusted, eUnidentifiedEvent, aWidget,
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eCommandEventClass),
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mCommand(aCommand) {
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mSpecifiedEventType = aEventType;
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}
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public:
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/**
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* Constructor to initialize an app command. This is the only case to
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* initialize this class as a command in C++ stack.
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*/
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WidgetCommandEvent(bool aIsTrusted, nsAtom* aCommand, nsIWidget* aWidget)
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: WidgetCommandEvent(aIsTrusted, nsGkAtoms::onAppCommand, aCommand,
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aWidget) {}
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/**
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* Constructor to initialize as internal event of dom::CommandEvent.
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*/
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WidgetCommandEvent() : WidgetCommandEvent(false, nullptr, nullptr, nullptr) {}
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virtual WidgetEvent* Duplicate() const override {
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MOZ_ASSERT(mClass == eCommandEventClass,
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"Duplicate() must be overridden by sub class");
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// Not copying widget, it is a weak reference.
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WidgetCommandEvent* result =
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new WidgetCommandEvent(false, mSpecifiedEventType, mCommand, nullptr);
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result->AssignCommandEventData(*this, true);
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result->mFlags = mFlags;
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return result;
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}
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RefPtr<nsAtom> mCommand;
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// XXX Not tested by test_assign_event_data.html
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void AssignCommandEventData(const WidgetCommandEvent& aEvent,
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bool aCopyTargets) {
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AssignGUIEventData(aEvent, aCopyTargets);
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// mCommand must have been initialized with the constructor.
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}
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};
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} // namespace mozilla
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#endif // mozilla_MiscEvents_h__
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