Add m-esr52 at 52.6.0

1 files changed, 230 insertions, 0 deletions

diff --git a/layout/xul/nsButtonBoxFrame.cpp b/layout/xul/nsButtonBoxFrame.cpp
new file mode 100644
index 000000000..45d934516
--- /dev/null
+++ b/layout/xul/nsButtonBoxFrame.cpp
@@ -0,0 +1,230 @@
+/* -*- 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 "nsButtonBoxFrame.h"
+#include "nsIContent.h"
+#include "nsIDOMNodeList.h"
+#include "nsIDOMXULButtonElement.h"
+#include "nsGkAtoms.h"
+#include "nsNameSpaceManager.h"
+#include "nsPresContext.h"
+#include "nsIPresShell.h"
+#include "nsIDOMElement.h"
+#include "nsDisplayList.h"
+#include "nsContentUtils.h"
+#include "mozilla/dom/Element.h"
+#include "mozilla/EventStateManager.h"
+#include "mozilla/EventStates.h"
+#include "mozilla/MouseEvents.h"
+#include "mozilla/TextEvents.h"
+
+using namespace mozilla;
+
+
+NS_IMPL_ISUPPORTS(nsButtonBoxFrame::nsButtonBoxListener, nsIDOMEventListener)
+
+nsresult
+nsButtonBoxFrame::nsButtonBoxListener::HandleEvent(nsIDOMEvent* aEvent)
+{
+  if (!mButtonBoxFrame) {
+    return NS_OK;
+  }
+
+  nsAutoString eventType;
+  aEvent->GetType(eventType);
+
+  if (eventType.EqualsLiteral("blur")) {
+    mButtonBoxFrame->Blurred();
+    return NS_OK;
+  }
+
+  NS_ABORT();
+
+  return NS_OK;
+}
+
+//
+// NS_NewXULButtonFrame
+//
+// Creates a new Button frame and returns it
+//
+nsIFrame*
+NS_NewButtonBoxFrame (nsIPresShell* aPresShell, nsStyleContext* aContext)
+{
+  return new (aPresShell) nsButtonBoxFrame(aContext);
+}
+
+NS_IMPL_FRAMEARENA_HELPERS(nsButtonBoxFrame)
+
+nsButtonBoxFrame::nsButtonBoxFrame(nsStyleContext* aContext) :
+  nsBoxFrame(aContext, false),
+  mButtonBoxListener(nullptr),
+  mIsHandlingKeyEvent(false)
+{
+  UpdateMouseThrough();
+}
+
+void
+nsButtonBoxFrame::Init(nsIContent*       aContent,
+                       nsContainerFrame* aParent,
+                       nsIFrame*         aPrevInFlow)
+{
+  nsBoxFrame::Init(aContent, aParent, aPrevInFlow);
+
+  mButtonBoxListener = new nsButtonBoxListener(this);
+
+  mContent->AddSystemEventListener(NS_LITERAL_STRING("blur"), mButtonBoxListener, false);
+}
+
+void
+nsButtonBoxFrame::DestroyFrom(nsIFrame* aDestructRoot)
+{
+  mContent->RemoveSystemEventListener(NS_LITERAL_STRING("blur"), mButtonBoxListener, false);
+
+  mButtonBoxListener->mButtonBoxFrame = nullptr;
+  mButtonBoxListener = nullptr;
+
+  nsBoxFrame::DestroyFrom(aDestructRoot);
+}
+
+void
+nsButtonBoxFrame::BuildDisplayListForChildren(nsDisplayListBuilder*   aBuilder,
+                                              const nsRect&           aDirtyRect,
+                                              const nsDisplayListSet& aLists)
+{
+  // override, since we don't want children to get events
+  if (aBuilder->IsForEventDelivery())
+    return;
+  nsBoxFrame::BuildDisplayListForChildren(aBuilder, aDirtyRect, aLists);
+}
+
+nsresult
+nsButtonBoxFrame::HandleEvent(nsPresContext* aPresContext, 
+                              WidgetGUIEvent* aEvent,
+                              nsEventStatus* aEventStatus)
+{
+  NS_ENSURE_ARG_POINTER(aEventStatus);
+  if (nsEventStatus_eConsumeNoDefault == *aEventStatus) {
+    return NS_OK;
+  }
+
+  switch (aEvent->mMessage) {
+    case eKeyDown: {
+      WidgetKeyboardEvent* keyEvent = aEvent->AsKeyboardEvent();
+      if (!keyEvent) {
+        break;
+      }
+      if (NS_VK_SPACE == keyEvent->mKeyCode) {
+        EventStateManager* esm = aPresContext->EventStateManager();
+        // :hover:active state
+        esm->SetContentState(mContent, NS_EVENT_STATE_HOVER);
+        esm->SetContentState(mContent, NS_EVENT_STATE_ACTIVE);
+        mIsHandlingKeyEvent = true;
+      }
+      break;
+    }
+
+// On mac, Return fires the default button, not the focused one.
+#ifndef XP_MACOSX
+    case eKeyPress: {
+      WidgetKeyboardEvent* keyEvent = aEvent->AsKeyboardEvent();
+      if (!keyEvent) {
+        break;
+      }
+      if (NS_VK_RETURN == keyEvent->mKeyCode) {
+        nsCOMPtr<nsIDOMXULButtonElement> buttonEl(do_QueryInterface(mContent));
+        if (buttonEl) {
+          MouseClicked(aEvent);
+          *aEventStatus = nsEventStatus_eConsumeNoDefault;
+        }
+      }
+      break;
+    }
+#endif
+
+    case eKeyUp: {
+      WidgetKeyboardEvent* keyEvent = aEvent->AsKeyboardEvent();
+      if (!keyEvent) {
+        break;
+      }
+      if (NS_VK_SPACE == keyEvent->mKeyCode) {
+        mIsHandlingKeyEvent = false;
+        // only activate on keyup if we're already in the :hover:active state
+        NS_ASSERTION(mContent->IsElement(), "How do we have a non-element?");
+        EventStates buttonState = mContent->AsElement()->State();
+        if (buttonState.HasAllStates(NS_EVENT_STATE_ACTIVE |
+                                     NS_EVENT_STATE_HOVER)) {
+          // return to normal state
+          EventStateManager* esm = aPresContext->EventStateManager();
+          esm->SetContentState(nullptr, NS_EVENT_STATE_ACTIVE);
+          esm->SetContentState(nullptr, NS_EVENT_STATE_HOVER);
+          MouseClicked(aEvent);
+        }
+      }
+      break;
+    }
+
+    case eMouseClick: {
+      WidgetMouseEvent* mouseEvent = aEvent->AsMouseEvent();
+      if (mouseEvent->IsLeftClickEvent()) {
+        MouseClicked(mouseEvent);
+      }
+      break;
+    }
+
+    default:
+      break;
+  }
+
+  return nsBoxFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
+}
+
+void
+nsButtonBoxFrame::Blurred()
+{
+  NS_ASSERTION(mContent->IsElement(), "How do we have a non-element?");
+  EventStates buttonState = mContent->AsElement()->State();
+  if (mIsHandlingKeyEvent &&
+      buttonState.HasAllStates(NS_EVENT_STATE_ACTIVE |
+                               NS_EVENT_STATE_HOVER)) {
+    // return to normal state
+    EventStateManager* esm = PresContext()->EventStateManager();
+    esm->SetContentState(nullptr, NS_EVENT_STATE_ACTIVE);
+    esm->SetContentState(nullptr, NS_EVENT_STATE_HOVER);
+  }
+  mIsHandlingKeyEvent = false;
+}
+
+void
+nsButtonBoxFrame::DoMouseClick(WidgetGUIEvent* aEvent, bool aTrustEvent)
+{
+  // Don't execute if we're disabled.
+  if (mContent->AttrValueIs(kNameSpaceID_None, nsGkAtoms::disabled,
+                            nsGkAtoms::_true, eCaseMatters))
+    return;
+
+  // Execute the oncommand event handler.
+  bool isShift = false;
+  bool isControl = false;
+  bool isAlt = false;
+  bool isMeta = false;
+  if(aEvent) {
+    WidgetInputEvent* inputEvent = aEvent->AsInputEvent();
+    isShift = inputEvent->IsShift();
+    isControl = inputEvent->IsControl();
+    isAlt = inputEvent->IsAlt();
+    isMeta = inputEvent->IsMeta();
+  }
+
+  // Have the content handle the event, propagating it according to normal DOM rules.
+  nsCOMPtr<nsIPresShell> shell = PresContext()->GetPresShell();
+  if (shell) {
+    nsContentUtils::DispatchXULCommand(mContent,
+                                       aEvent ?
+                                         aEvent->IsTrusted() : aTrustEvent,
+                                       nullptr, shell,
+                                       isControl, isAlt, isShift, isMeta);
+  }
+}