Issue #1557 - Allow event dispatch on disabled form controls. (uplift)

14 files changed, 35 insertions, 26 deletions

diff --git a/dom/base/nsDOMWindowUtils.cpp b/dom/base/nsDOMWindowUtils.cpp
index 2ab5937ac..adb407a04 100644
--- a/dom/base/nsDOMWindowUtils.cpp
+++ b/dom/base/nsDOMWindowUtils.cpp
@@ -3577,7 +3577,8 @@ nsDOMWindowUtils::IsNodeDisabledForEvents(nsIDOMNode* aNode, bool* aRetVal)
   while (node) {
     if (node->IsNodeOfType(nsINode::eHTML_FORM_CONTROL)) {
       nsCOMPtr<nsIFormControl> fc = do_QueryInterface(node);
-      if (fc && fc->IsDisabledForEvents(eVoidEvent)) {
+      WidgetEvent event(true, eVoidEvent);
+      if (fc && fc->IsDisabledForEvents(&event)) {
         *aRetVal = true;
         break;
       }
diff --git a/dom/html/HTMLButtonElement.cpp b/dom/html/HTMLButtonElement.cpp
index 435aa9f7f..609eb7a66 100644
--- a/dom/html/HTMLButtonElement.cpp
+++ b/dom/html/HTMLButtonElement.cpp
@@ -199,18 +199,18 @@ HTMLButtonElement::ParseAttribute(int32_t aNamespaceID,
 }
 
 bool
-HTMLButtonElement::IsDisabledForEvents(EventMessage aMessage)
+HTMLButtonElement::IsDisabledForEvents(WidgetEvent* aEvent)
 {
   nsIFormControlFrame* formControlFrame = GetFormControlFrame(false);
   nsIFrame* formFrame = do_QueryFrame(formControlFrame);
-  return IsElementDisabledForEvents(aMessage, formFrame);
+  return IsElementDisabledForEvents(aEvent, formFrame);
 }
 
 nsresult
 HTMLButtonElement::PreHandleEvent(EventChainPreVisitor& aVisitor)
 {
   aVisitor.mCanHandle = false;
-  if (IsDisabledForEvents(aVisitor.mEvent->mMessage)) {
+  if (IsDisabledForEvents(aVisitor.mEvent)) {
     return NS_OK;
   }
 
diff --git a/dom/html/HTMLButtonElement.h b/dom/html/HTMLButtonElement.h
index ecd9e03d7..d15d11b6d 100644
--- a/dom/html/HTMLButtonElement.h
+++ b/dom/html/HTMLButtonElement.h
@@ -52,7 +52,7 @@ public:
   NS_IMETHOD SubmitNamesValues(HTMLFormSubmission* aFormSubmission) override;
   NS_IMETHOD SaveState() override;
   bool RestoreState(nsPresState* aState) override;
-  virtual bool IsDisabledForEvents(EventMessage aMessage) override;
+  virtual bool IsDisabledForEvents(WidgetEvent* aEvent) override;
 
   virtual void FieldSetDisabledChanged(bool aNotify) override;
 
diff --git a/dom/html/HTMLFieldSetElement.cpp b/dom/html/HTMLFieldSetElement.cpp
index d72fd1061..788d88791 100644
--- a/dom/html/HTMLFieldSetElement.cpp
+++ b/dom/html/HTMLFieldSetElement.cpp
@@ -63,9 +63,9 @@ NS_IMPL_STRING_ATTR(HTMLFieldSetElement, Name, name)
 NS_IMPL_NSICONSTRAINTVALIDATION(HTMLFieldSetElement)
 
 bool
-HTMLFieldSetElement::IsDisabledForEvents(EventMessage aMessage)
+HTMLFieldSetElement::IsDisabledForEvents(WidgetEvent* aEvent)
 {
-  return IsElementDisabledForEvents(aMessage, nullptr);
+  return IsElementDisabledForEvents(aEvent, nullptr);
 }
 
 // nsIContent
@@ -74,7 +74,7 @@ HTMLFieldSetElement::PreHandleEvent(EventChainPreVisitor& aVisitor)
 {
   // Do not process any DOM events if the element is disabled.
   aVisitor.mCanHandle = false;
-  if (IsDisabledForEvents(aVisitor.mEvent->mMessage)) {
+  if (IsDisabledForEvents(aVisitor.mEvent)) {
     return NS_OK;
   }
 
diff --git a/dom/html/HTMLFieldSetElement.h b/dom/html/HTMLFieldSetElement.h
index 96fff4582..4a4ab71e4 100644
--- a/dom/html/HTMLFieldSetElement.h
+++ b/dom/html/HTMLFieldSetElement.h
@@ -52,7 +52,7 @@ public:
   NS_IMETHOD_(uint32_t) GetType() const override { return NS_FORM_FIELDSET; }
   NS_IMETHOD Reset() override;
   NS_IMETHOD SubmitNamesValues(HTMLFormSubmission* aFormSubmission) override;
-  virtual bool IsDisabledForEvents(EventMessage aMessage) override;
+  virtual bool IsDisabledForEvents(WidgetEvent* aEvent) override;
   virtual nsresult Clone(mozilla::dom::NodeInfo *aNodeInfo, nsINode **aResult) const override;
 
   const nsIContent* GetFirstLegend() const { return mFirstLegend; }
diff --git a/dom/html/HTMLInputElement.cpp b/dom/html/HTMLInputElement.cpp
index 0b879bb9b..7a07994f7 100644
--- a/dom/html/HTMLInputElement.cpp
+++ b/dom/html/HTMLInputElement.cpp
@@ -3732,9 +3732,9 @@ HTMLInputElement::NeedToInitializeEditorForEvent(
 }
 
 bool
-HTMLInputElement::IsDisabledForEvents(EventMessage aMessage)
+HTMLInputElement::IsDisabledForEvents(WidgetEvent* aEvent)
 {
-  return IsElementDisabledForEvents(aMessage, GetPrimaryFrame());
+  return IsElementDisabledForEvents(aEvent, GetPrimaryFrame());
 }
 
 nsresult
@@ -3742,7 +3742,7 @@ HTMLInputElement::PreHandleEvent(EventChainPreVisitor& aVisitor)
 {
   // Do not process any DOM events if the element is disabled
   aVisitor.mCanHandle = false;
-  if (IsDisabledForEvents(aVisitor.mEvent->mMessage)) {
+  if (IsDisabledForEvents(aVisitor.mEvent)) {
     return NS_OK;
   }
 
diff --git a/dom/html/HTMLInputElement.h b/dom/html/HTMLInputElement.h
index 98a590443..a000aa21d 100644
--- a/dom/html/HTMLInputElement.h
+++ b/dom/html/HTMLInputElement.h
@@ -169,7 +169,7 @@ public:
   NS_IMETHOD SaveState() override;
   virtual bool RestoreState(nsPresState* aState) override;
   virtual bool AllowDrop() override;
-  virtual bool IsDisabledForEvents(EventMessage aMessage) override;
+  virtual bool IsDisabledForEvents(WidgetEvent* aEvent) override;
 
   virtual void FieldSetDisabledChanged(bool aNotify) override;
 
diff --git a/dom/html/HTMLSelectElement.cpp b/dom/html/HTMLSelectElement.cpp
index 9ba0a1efe..e1bc0ca62 100644
--- a/dom/html/HTMLSelectElement.cpp
+++ b/dom/html/HTMLSelectElement.cpp
@@ -1431,21 +1431,21 @@ HTMLSelectElement::GetAttributeMappingFunction() const
 }
 
 bool
-HTMLSelectElement::IsDisabledForEvents(EventMessage aMessage)
+HTMLSelectElement::IsDisabledForEvents(WidgetEvent* aEvent)
 {
   nsIFormControlFrame* formControlFrame = GetFormControlFrame(false);
   nsIFrame* formFrame = nullptr;
   if (formControlFrame) {
     formFrame = do_QueryFrame(formControlFrame);
   }
-  return IsElementDisabledForEvents(aMessage, formFrame);
+  return IsElementDisabledForEvents(aEvent, formFrame);
 }
 
 nsresult
 HTMLSelectElement::PreHandleEvent(EventChainPreVisitor& aVisitor)
 {
   aVisitor.mCanHandle = false;
-  if (IsDisabledForEvents(aVisitor.mEvent->mMessage)) {
+  if (IsDisabledForEvents(aVisitor.mEvent)) {
     return NS_OK;
   }
 
diff --git a/dom/html/HTMLSelectElement.h b/dom/html/HTMLSelectElement.h
index dc1075cd7..b9041c885 100644
--- a/dom/html/HTMLSelectElement.h
+++ b/dom/html/HTMLSelectElement.h
@@ -293,7 +293,7 @@ public:
   NS_IMETHOD SubmitNamesValues(HTMLFormSubmission* aFormSubmission) override;
   NS_IMETHOD SaveState() override;
   virtual bool RestoreState(nsPresState* aState) override;
-  virtual bool IsDisabledForEvents(EventMessage aMessage) override;
+  virtual bool IsDisabledForEvents(WidgetEvent* aEvent) override;
 
   virtual void FieldSetDisabledChanged(bool aNotify) override;
 
diff --git a/dom/html/HTMLTextAreaElement.cpp b/dom/html/HTMLTextAreaElement.cpp
index 42bc02435..4c40c16f3 100644
--- a/dom/html/HTMLTextAreaElement.cpp
+++ b/dom/html/HTMLTextAreaElement.cpp
@@ -498,18 +498,18 @@ HTMLTextAreaElement::GetAttributeMappingFunction() const
 }
 
 bool
-HTMLTextAreaElement::IsDisabledForEvents(EventMessage aMessage)
+HTMLTextAreaElement::IsDisabledForEvents(WidgetEvent* aEvent)
 {
   nsIFormControlFrame* formControlFrame = GetFormControlFrame(false);
   nsIFrame* formFrame = do_QueryFrame(formControlFrame);
-  return IsElementDisabledForEvents(aMessage, formFrame);
+  return IsElementDisabledForEvents(aEvent, formFrame);
 }
 
 nsresult
 HTMLTextAreaElement::PreHandleEvent(EventChainPreVisitor& aVisitor)
 {
   aVisitor.mCanHandle = false;
-  if (IsDisabledForEvents(aVisitor.mEvent->mMessage)) {
+  if (IsDisabledForEvents(aVisitor.mEvent)) {
     return NS_OK;
   }
 
diff --git a/dom/html/HTMLTextAreaElement.h b/dom/html/HTMLTextAreaElement.h
index 039082818..90fb680c5 100644
--- a/dom/html/HTMLTextAreaElement.h
+++ b/dom/html/HTMLTextAreaElement.h
@@ -77,7 +77,7 @@ public:
   NS_IMETHOD SubmitNamesValues(HTMLFormSubmission* aFormSubmission) override;
   NS_IMETHOD SaveState() override;
   virtual bool RestoreState(nsPresState* aState) override;
-  virtual bool IsDisabledForEvents(EventMessage aMessage) override;
+  virtual bool IsDisabledForEvents(WidgetEvent* aEvent) override;
 
   virtual void FieldSetDisabledChanged(bool aNotify) override;
 
diff --git a/dom/html/nsGenericHTMLElement.cpp b/dom/html/nsGenericHTMLElement.cpp
index 2f890325a..1e2f1c186 100644
--- a/dom/html/nsGenericHTMLElement.cpp
+++ b/dom/html/nsGenericHTMLElement.cpp
@@ -2286,10 +2286,17 @@ nsGenericHTMLFormElement::FormIdUpdated(Element* aOldElement,
 }
 
 bool 
-nsGenericHTMLFormElement::IsElementDisabledForEvents(EventMessage aMessage,
+nsGenericHTMLFormElement::IsElementDisabledForEvents(WidgetEvent* aEvent,
                                                      nsIFrame* aFrame)
 {
-  switch (aMessage) {
+  MOZ_ASSERT(aEvent);
+
+  // Allow dispatch of CustomEvent and untrusted Events.
+  if (!aEvent->IsTrusted()) {
+    return false;
+  }
+
+  switch (aEvent->mMessage) {
     case eMouseMove:
     case eMouseOver:
     case eMouseOut:
@@ -2455,8 +2462,9 @@ nsGenericHTMLFormElement::IsLabelable() const
 void
 nsGenericHTMLElement::Click()
 {
-  if (HandlingClick())
+  if (IsDisabled() || HandlingClick()) {
     return;
+  }
 
   // Strong in case the event kills it
   nsCOMPtr<nsIDocument> doc = GetComposedDoc();
diff --git a/dom/html/nsGenericHTMLElement.h b/dom/html/nsGenericHTMLElement.h
index 72039f266..23fabc4e8 100644
--- a/dom/html/nsGenericHTMLElement.h
+++ b/dom/html/nsGenericHTMLElement.h
@@ -1308,7 +1308,7 @@ protected:
                               void* aData);
 
   // Returns true if the event should not be handled from PreHandleEvent
-  bool IsElementDisabledForEvents(mozilla::EventMessage aMessage,
+  bool IsElementDisabledForEvents(mozilla::WidgetEvent* aEvent,
                                   nsIFrame* aFrame);
 
   // The focusability state of this form control.  eUnfocusable means that it
diff --git a/dom/html/nsIFormControl.h b/dom/html/nsIFormControl.h
index 34380bc67..22f1d08b3 100644
--- a/dom/html/nsIFormControl.h
+++ b/dom/html/nsIFormControl.h
@@ -207,7 +207,7 @@ public:
    */
   inline bool AllowDraggableChildren() const;
 
-  virtual bool IsDisabledForEvents(mozilla::EventMessage aMessage)
+  virtual bool IsDisabledForEvents(mozilla::WidgetEvent* aEvent)
   {
     return false;
   }