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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "nsTitleBarFrame.h"
#include "nsIContent.h"
#include "mozilla/dom/Document.h"
#include "nsGkAtoms.h"
#include "nsIWidget.h"
#include "nsMenuPopupFrame.h"
#include "nsPresContext.h"
#include "nsIDocShell.h"
#include "nsPIDOMWindow.h"
#include "nsDisplayList.h"
#include "nsContentUtils.h"
#include "mozilla/MouseEvents.h"
#include "mozilla/PresShell.h"
#include "mozilla/dom/MouseEventBinding.h"
using namespace mozilla;
//
// NS_NewTitleBarFrame
//
// Creates a new TitleBar frame and returns it
//
nsIFrame* NS_NewTitleBarFrame(PresShell* aPresShell, ComputedStyle* aStyle) {
return new (aPresShell) nsTitleBarFrame(aStyle, aPresShell->GetPresContext());
}
NS_IMPL_FRAMEARENA_HELPERS(nsTitleBarFrame)
nsTitleBarFrame::nsTitleBarFrame(ComputedStyle* aStyle,
nsPresContext* aPresContext, ClassID aID)
: nsBoxFrame(aStyle, aPresContext, aID, false) {
mTrackingMouseMove = false;
}
void nsTitleBarFrame::BuildDisplayListForChildren(
nsDisplayListBuilder* aBuilder, const nsDisplayListSet& aLists) {
// override, since we don't want children to get events
if (aBuilder->IsForEventDelivery()) {
if (!mContent->AsElement()->AttrValueIs(kNameSpaceID_None,
nsGkAtoms::allowevents,
nsGkAtoms::_true, eCaseMatters))
return;
}
nsBoxFrame::BuildDisplayListForChildren(aBuilder, aLists);
}
nsresult nsTitleBarFrame::HandleEvent(nsPresContext* aPresContext,
WidgetGUIEvent* aEvent,
nsEventStatus* aEventStatus) {
NS_ENSURE_ARG_POINTER(aEventStatus);
if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
return NS_OK;
}
bool doDefault = true;
switch (aEvent->mMessage) {
case eMouseDown: {
if (aEvent->AsMouseEvent()->mButton == MouseButton::ePrimary) {
// titlebar has no effect in non-chrome shells
if (aPresContext->IsChrome()) {
// we're tracking.
mTrackingMouseMove = true;
// start capture.
PresShell::SetCapturingContent(GetContent(),
CaptureFlags::IgnoreAllowedState);
// remember current mouse coordinates.
mLastPoint = aEvent->mRefPoint;
}
*aEventStatus = nsEventStatus_eConsumeNoDefault;
doDefault = false;
}
} break;
case eMouseUp: {
if (mTrackingMouseMove &&
aEvent->AsMouseEvent()->mButton == MouseButton::ePrimary) {
// we're done tracking.
mTrackingMouseMove = false;
// end capture
PresShell::ReleaseCapturingContent();
*aEventStatus = nsEventStatus_eConsumeNoDefault;
doDefault = false;
}
} break;
case eMouseMove: {
if (mTrackingMouseMove) {
LayoutDeviceIntPoint nsMoveBy = aEvent->mRefPoint - mLastPoint;
nsIFrame* parent = GetParent();
while (parent) {
nsMenuPopupFrame* popupFrame = do_QueryFrame(parent);
if (popupFrame) break;
parent = parent->GetParent();
}
// if the titlebar is in a popup, move the popup frame, otherwise
// move the widget associated with the window
if (parent) {
nsMenuPopupFrame* menuPopupFrame =
static_cast<nsMenuPopupFrame*>(parent);
nsCOMPtr<nsIWidget> widget = menuPopupFrame->GetWidget();
LayoutDeviceIntRect bounds = widget->GetScreenBounds();
CSSPoint cssPos = (bounds.TopLeft() + nsMoveBy) /
aPresContext->CSSToDevPixelScale();
menuPopupFrame->MoveTo(RoundedToInt(cssPos), false);
} else {
mozilla::PresShell* presShell = aPresContext->PresShell();
nsPIDOMWindowOuter* window = presShell->GetDocument()->GetWindow();
if (window) {
window->MoveBy(nsMoveBy.x, nsMoveBy.y);
}
}
*aEventStatus = nsEventStatus_eConsumeNoDefault;
doDefault = false;
}
} break;
case eMouseClick: {
WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
if (mouseEvent->IsLeftClickEvent()
#ifdef XP_MACOSX
// On Mac, ctrl-click will send a context menu event from the widget,
// so we don't want to dispatch widget command if it is redispatched
// from the mouse event with ctrl key is pressed.
&& !mouseEvent->IsControl()
#endif
) {
MouseClicked(mouseEvent);
}
break;
}
default:
break;
}
if (doDefault)
return nsBoxFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
else
return NS_OK;
}
void nsTitleBarFrame::MouseClicked(WidgetMouseEvent* aEvent) {
// Execute the oncommand event handler.
nsCOMPtr<nsIContent> content = mContent;
nsContentUtils::DispatchXULCommand(
content, false, nullptr, nullptr, aEvent->IsControl(), aEvent->IsAlt(),
aEvent->IsShift(), aEvent->IsMeta(), aEvent->mInputSource);
}
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