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/* -*- 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/. */
#ifndef mozilla_MiscEvents_h__
#define mozilla_MiscEvents_h__
#include <stdint.h>
#include "mozilla/BasicEvents.h"
#include "mozilla/Maybe.h"
#include "nsCOMPtr.h"
#include "nsAtom.h"
#include "nsGkAtoms.h"
#include "nsITransferable.h"
#include "nsString.h"
namespace mozilla {
namespace dom {
class PBrowserParent;
class PBrowserChild;
} // namespace dom
/******************************************************************************
* mozilla::WidgetContentCommandEvent
******************************************************************************/
class WidgetContentCommandEvent : public WidgetGUIEvent {
public:
virtual WidgetContentCommandEvent* AsContentCommandEvent() override {
return this;
}
WidgetContentCommandEvent(bool aIsTrusted, EventMessage aMessage,
nsIWidget* aWidget, bool aOnlyEnabledCheck = false)
: WidgetGUIEvent(aIsTrusted, aMessage, aWidget,
eContentCommandEventClass),
mOnlyEnabledCheck(aOnlyEnabledCheck),
mSucceeded(false),
mIsEnabled(false) {}
virtual WidgetEvent* Duplicate() const override {
// This event isn't an internal event of any DOM event.
NS_ASSERTION(!IsAllowedToDispatchDOMEvent(),
"WidgetQueryContentEvent needs to support Duplicate()");
MOZ_CRASH("WidgetQueryContentEvent doesn't support Duplicate()");
return nullptr;
}
// eContentCommandInsertText and eContentCommandReplaceText
mozilla::Maybe<nsString> mString; // [in]
// eContentCommandPasteTransferable
nsCOMPtr<nsITransferable> mTransferable; // [in]
// eContentCommandScroll
// for mScroll.mUnit
enum { eCmdScrollUnit_Line, eCmdScrollUnit_Page, eCmdScrollUnit_Whole };
struct ScrollInfo {
ScrollInfo()
: mAmount(0), mUnit(eCmdScrollUnit_Line), mIsHorizontal(false) {}
int32_t mAmount; // [in]
uint8_t mUnit; // [in]
bool mIsHorizontal; // [in]
} mScroll;
// eContentCommandReplaceText
struct Selection {
// Replacement source string. If not matched, failed
nsString mReplaceSrcString; // [in]
// Start offset of selection
uint32_t mOffset = 0; // [in]
// false if selection is end of replaced string
bool mPreventSetSelection = false; // [in]
} mSelection;
// If set to true, the event checks whether the command is enabled in the
// process or not without executing the command. I.e., if it's in the parent
// process when a remote process has focus, mIsEnabled may be different from
// the latest state of the command in the remote process.
bool mOnlyEnabledCheck; // [in]
bool mSucceeded; // [out]
// If the command is enabled, set to true. Otherwise, false. This is set
// synchronously in the process. If it's in the parent process when a remote
// process has focus, this returns the command state in the parent process
// which may be different from the remote process.
// XXX When mOnlyEnabledCheck is set to true, this may be always set to true
// even when the command is disabled in the parent process.
bool mIsEnabled; // [out]
void AssignContentCommandEventData(const WidgetContentCommandEvent& aEvent,
bool aCopyTargets) {
AssignGUIEventData(aEvent, aCopyTargets);
mString = aEvent.mString;
mScroll = aEvent.mScroll;
mSelection = aEvent.mSelection;
mOnlyEnabledCheck = aEvent.mOnlyEnabledCheck;
mSucceeded = aEvent.mSucceeded;
mIsEnabled = aEvent.mIsEnabled;
}
};
/******************************************************************************
* mozilla::WidgetCommandEvent
*
* This sends a command to chrome. If you want to request what is performed
* in focused content, you should use WidgetContentCommandEvent instead.
*
* XXX Should be |WidgetChromeCommandEvent|?
******************************************************************************/
class WidgetCommandEvent : public WidgetGUIEvent {
public:
virtual WidgetCommandEvent* AsCommandEvent() override { return this; }
protected:
WidgetCommandEvent(bool aIsTrusted, nsAtom* aEventType, nsAtom* aCommand,
nsIWidget* aWidget, const WidgetEventTime* aTime = nullptr)
: WidgetGUIEvent(aIsTrusted, eUnidentifiedEvent, aWidget,
eCommandEventClass, aTime),
mCommand(aCommand) {
mSpecifiedEventType = aEventType;
}
public:
/**
* Constructor to initialize an app command. This is the only case to
* initialize this class as a command in C++ stack.
*/
WidgetCommandEvent(bool aIsTrusted, nsAtom* aCommand, nsIWidget* aWidget,
const WidgetEventTime* aTime = nullptr)
: WidgetCommandEvent(aIsTrusted, nsGkAtoms::onAppCommand, aCommand,
aWidget, aTime) {}
/**
* Constructor to initialize as internal event of dom::CommandEvent.
*/
WidgetCommandEvent()
: WidgetCommandEvent(false, nullptr, nullptr, nullptr, nullptr) {}
virtual WidgetEvent* Duplicate() const override {
MOZ_ASSERT(mClass == eCommandEventClass,
"Duplicate() must be overridden by sub class");
// Not copying widget, it is a weak reference.
WidgetCommandEvent* result = new WidgetCommandEvent(
false, mSpecifiedEventType, mCommand, nullptr, this);
result->AssignCommandEventData(*this, true);
result->mFlags = mFlags;
return result;
}
RefPtr<nsAtom> mCommand;
// XXX Not tested by test_assign_event_data.html
void AssignCommandEventData(const WidgetCommandEvent& aEvent,
bool aCopyTargets) {
AssignGUIEventData(aEvent, aCopyTargets);
// mCommand must have been initialized with the constructor.
}
};
} // namespace mozilla
#endif // mozilla_MiscEvents_h__
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