gecko-dev/lib/mac/UserInterface/CApplicationEventAttachment.cp
2004-04-25 16:36:22 +00:00

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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either the GNU General Public License Version 2 or later (the "GPL"), or
* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
// Usage Notes:
//
// (1) Add this attachment as the first attachment to the application object.
// (2) The EventRecord from ProcessNextEvent *must* persist across calls to
// ProcessNextEvent in order to prevent dangling references to the event.
#include "CApplicationEventAttachment.h"
#include <LPeriodical.h>
#include "nspr.h"
#include "CMochaHacks.h"
enum {
kPrivateNSPREventType = 13
};
// ---------------------------------------------------------------------------------
// <09> [Static data members]
// ---------------------------------------------------------------------------------
LApplication* CApplicationEventAttachment::sApplication = nil;
EventRecord* CApplicationEventAttachment::sCurrentEvent = nil;
EventRecord CApplicationEventAttachment::sFakeNullEvent;
Boolean CApplicationEventAttachment::sFakeNullEventInitialized = false;
// ---------------------------------------------------------------------------
// <09> CApplicationEventAttachment
// ---------------------------------------------------------------------------
CApplicationEventAttachment::CApplicationEventAttachment()
: LAttachment(msg_Event)
{
}
// ---------------------------------------------------------------------------
// <09> ~CApplicationEventAttachment
// ---------------------------------------------------------------------------
CApplicationEventAttachment::~CApplicationEventAttachment()
{
}
// ---------------------------------------------------------------------------
// <09> ExecuteSelf
// ---------------------------------------------------------------------------
// Remember the current event and the application object
void
CApplicationEventAttachment::ExecuteSelf(
MessageT inMessage,
void* ioParam)
{
#pragma unused(inMessage)
sCurrentEvent = static_cast<EventRecord*>(ioParam);
if (!sApplication)
{
sApplication = dynamic_cast<LApplication*>(mOwnerHost);
}
}
// ---------------------------------------------------------------------------
// <09> GetApplication
// ---------------------------------------------------------------------------
LApplication&
CApplicationEventAttachment::GetApplication()
{
ThrowIfNil_(sApplication);
return *sApplication;
}
// ---------------------------------------------------------------------------
// <09> GetCurrentEvent
// ---------------------------------------------------------------------------
EventRecord&
CApplicationEventAttachment::GetCurrentEvent()
{
if (!sCurrentEvent)
{
if (!sFakeNullEventInitialized)
{
sFakeNullEvent.what = nullEvent;
sFakeNullEvent.message = 0;
sFakeNullEvent.when = 0;
sFakeNullEvent.where.h = sFakeNullEvent.where.v = 0;
sFakeNullEvent.modifiers = 0;
sFakeNullEventInitialized = true;
}
return sFakeNullEvent;
}
return *sCurrentEvent;
}
// ---------------------------------------------------------------------------
// <09> CurrentEventHasModifiers
// ---------------------------------------------------------------------------
Boolean
CApplicationEventAttachment::CurrentEventHasModifiers(
EventModifiers inModifiers)
{
Boolean hasModifier = false;
EventModifiers hackedModifiers = inModifiers;
if (GetCurrentEvent().what == kPrivateNSPREventType)
{
// This is ridiculous. Sometimes when event.what is kPrivateNSPREventType
// the modifiers are mapped to the mocha stuff and sometimes they're
// native mac. So we have to first see if it seems to be mapped as mocha
// before arbitrarily mapping inModifiers. And to make matters worse,
// the darn mocha event mask stuff overlaps native mac modifiers for
// the alt (option) modifier - so we're snookered in that case. TODO: is this
// the best we can do short of fixing mocha event masks to match
// the mac (at lease in the case of the Mac - we could #ifdef it).
if ((GetCurrentEvent().modifiers & EVENT_ALT_MASK) ||
(GetCurrentEvent().modifiers & EVENT_CONTROL_MASK) ||
(GetCurrentEvent().modifiers & EVENT_SHIFT_MASK) ||
(GetCurrentEvent().modifiers & EVENT_META_MASK))
{
hackedModifiers = CMochaHacks::MochaModifiers(inModifiers);
}
}
return ((GetCurrentEvent().modifiers & hackedModifiers) ? true : false);
}
// ---------------------------------------------------------------------------
// <09> ProcessNextEvent
// ---------------------------------------------------------------------------
void
CApplicationEventAttachment::ProcessNextEvent()
{
GetApplication().ProcessNextEvent();
}