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-rw-r--r--layout/xul/nsTitleBarFrame.cpp172
1 files changed, 172 insertions, 0 deletions
diff --git a/layout/xul/nsTitleBarFrame.cpp b/layout/xul/nsTitleBarFrame.cpp
new file mode 100644
index 000000000..2792403dc
--- /dev/null
+++ b/layout/xul/nsTitleBarFrame.cpp
@@ -0,0 +1,172 @@
+/* -*- 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/. */
+
+#include "nsCOMPtr.h"
+#include "nsTitleBarFrame.h"
+#include "nsIContent.h"
+#include "nsIDocument.h"
+#include "nsIDOMNodeList.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"
+
+using namespace mozilla;
+
+//
+// NS_NewTitleBarFrame
+//
+// Creates a new TitleBar frame and returns it
+//
+nsIFrame*
+NS_NewTitleBarFrame(nsIPresShell* aPresShell, nsStyleContext* aContext)
+{
+ return new (aPresShell) nsTitleBarFrame(aContext);
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(nsTitleBarFrame)
+
+nsTitleBarFrame::nsTitleBarFrame(nsStyleContext* aContext)
+:nsBoxFrame(aContext, false)
+{
+ mTrackingMouseMove = false;
+ UpdateMouseThrough();
+}
+
+void
+nsTitleBarFrame::BuildDisplayListForChildren(nsDisplayListBuilder* aBuilder,
+ const nsRect& aDirtyRect,
+ const nsDisplayListSet& aLists)
+{
+ // override, since we don't want children to get events
+ if (aBuilder->IsForEventDelivery()) {
+ if (!mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::allowevents,
+ nsGkAtoms::_true, eCaseMatters))
+ return;
+ }
+ nsBoxFrame::BuildDisplayListForChildren(aBuilder, aDirtyRect, 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()->button == WidgetMouseEvent::eLeftButton) {
+ // titlebar has no effect in non-chrome shells
+ nsCOMPtr<nsIDocShellTreeItem> dsti = aPresContext->GetDocShell();
+ if (dsti) {
+ if (dsti->ItemType() == nsIDocShellTreeItem::typeChrome) {
+ // we're tracking.
+ mTrackingMouseMove = true;
+
+ // start capture.
+ nsIPresShell::SetCapturingContent(GetContent(), CAPTURE_IGNOREALLOWED);
+
+ // remember current mouse coordinates.
+ mLastPoint = aEvent->mRefPoint;
+ }
+ }
+
+ *aEventStatus = nsEventStatus_eConsumeNoDefault;
+ doDefault = false;
+ }
+ }
+ break;
+
+
+ case eMouseUp: {
+ if (mTrackingMouseMove &&
+ aEvent->AsMouseEvent()->button == WidgetMouseEvent::eLeftButton) {
+ // we're done tracking.
+ mTrackingMouseMove = false;
+
+ // end capture
+ nsIPresShell::SetCapturingContent(nullptr, 0);
+
+ *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 {
+ nsIPresShell* 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()) {
+ 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.
+ nsContentUtils::DispatchXULCommand(mContent, aEvent && aEvent->IsTrusted());
+}