Issue #1356 - Remove -moz-user-input disabled to improve event handling.

12 files changed, 29 insertions, 35 deletions

diff --git a/layout/base/nsCaret.cpp b/layout/base/nsCaret.cpp
index eca22f3ba..8396726c6 100644
--- a/layout/base/nsCaret.cpp
+++ b/layout/base/nsCaret.cpp
@@ -511,7 +511,7 @@ nsCaret::GetPaintGeometry(nsRect* aRect)
   CheckSelectionLanguageChange();
 
   int32_t frameOffset;
-  nsIFrame *frame = GetFrameAndOffset(GetSelectionInternal(),
+  nsIFrame* frame = GetFrameAndOffset(GetSelectionInternal(),
       mOverrideContent, mOverrideOffset, &frameOffset);
   if (!frame) {
     return nullptr;
@@ -521,8 +521,7 @@ nsCaret::GetPaintGeometry(nsRect* aRect)
   const nsStyleUserInterface* userinterface = frame->StyleUserInterface();
   if ((!mIgnoreUserModify &&
        userinterface->mUserModify == StyleUserModify::ReadOnly) ||
-      userinterface->mUserInput == StyleUserInput::None ||
-      userinterface->mUserInput == StyleUserInput::Disabled) {
+      frame->IsContentDisabled()){
     return nullptr;
   }
 
diff --git a/layout/forms/nsComboboxControlFrame.cpp b/layout/forms/nsComboboxControlFrame.cpp
index 5a9438939..78185616f 100644
--- a/layout/forms/nsComboboxControlFrame.cpp
+++ b/layout/forms/nsComboboxControlFrame.cpp
@@ -1165,9 +1165,7 @@ nsComboboxControlFrame::HandleEvent(nsPresContext* aPresContext,
 
   // If we have style that affects how we are selected, feed event down to
   // nsFrame::HandleEvent so that selection takes place when appropriate.
-  const nsStyleUserInterface* uiStyle = StyleUserInterface();
-  if (uiStyle->mUserInput == StyleUserInput::None ||
-      uiStyle->mUserInput == StyleUserInput::Disabled) {
+  if (IsContentDisabled()) {
     return nsBlockFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
   }
   return NS_OK;
diff --git a/layout/forms/nsFormControlFrame.cpp b/layout/forms/nsFormControlFrame.cpp
index 4ee62acbf..8dbe564dd 100644
--- a/layout/forms/nsFormControlFrame.cpp
+++ b/layout/forms/nsFormControlFrame.cpp
@@ -183,10 +183,8 @@ nsFormControlFrame::HandleEvent(nsPresContext* aPresContext,
                                 WidgetGUIEvent* aEvent,
                                 nsEventStatus* aEventStatus)
 {
-  // Check for user-input:none style
-  const nsStyleUserInterface* uiStyle = StyleUserInterface();
-  if (uiStyle->mUserInput == StyleUserInput::None ||
-      uiStyle->mUserInput == StyleUserInput::Disabled) {
+  // Check for disabled content so that selection works properly (?).
+  if (IsContentDisabled()) {
     return nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
   }
   return NS_OK;
diff --git a/layout/forms/nsGfxButtonControlFrame.cpp b/layout/forms/nsGfxButtonControlFrame.cpp
index 90da437f7..393145e0b 100644
--- a/layout/forms/nsGfxButtonControlFrame.cpp
+++ b/layout/forms/nsGfxButtonControlFrame.cpp
@@ -227,10 +227,7 @@ nsGfxButtonControlFrame::HandleEvent(nsPresContext* aPresContext,
   // from being called. The nsFrame::HandleEvent causes the button label
   // to be selected (Drawn with an XOR rectangle over the label)
 
-  // do we have user-input style?
-  const nsStyleUserInterface* uiStyle = StyleUserInterface();
-  if (uiStyle->mUserInput == StyleUserInput::None ||
-      uiStyle->mUserInput == StyleUserInput::Disabled) {
+  if (IsContentDisabled()) {
     return nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
   }
   return NS_OK;
diff --git a/layout/forms/nsImageControlFrame.cpp b/layout/forms/nsImageControlFrame.cpp
index 212fa9356..8aef41538 100644
--- a/layout/forms/nsImageControlFrame.cpp
+++ b/layout/forms/nsImageControlFrame.cpp
@@ -150,15 +150,9 @@ nsImageControlFrame::HandleEvent(nsPresContext* aPresContext,
     return NS_OK;
   }
 
-  // do we have user-input style?
-  const nsStyleUserInterface* uiStyle = StyleUserInterface();
-  if (uiStyle->mUserInput == StyleUserInput::None ||
-      uiStyle->mUserInput == StyleUserInput::Disabled) {
+  if (IsContentDisabled()) {
     return nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
   }
-  if (mContent->HasAttr(kNameSpaceID_None, nsGkAtoms::disabled)) { // XXX cache disabled
-    return NS_OK;
-  }
 
   *aEventStatus = nsEventStatus_eIgnore;
 
diff --git a/layout/forms/nsListControlFrame.cpp b/layout/forms/nsListControlFrame.cpp
index cc5f37f9a..58e81039f 100644
--- a/layout/forms/nsListControlFrame.cpp
+++ b/layout/forms/nsListControlFrame.cpp
@@ -920,16 +920,11 @@ nsListControlFrame::HandleEvent(nsPresContext* aPresContext,
   if (nsEventStatus_eConsumeNoDefault == *aEventStatus)
     return NS_OK;
 
-  // do we have style that affects how we are selected?
-  // do we have user-input style?
-  const nsStyleUserInterface* uiStyle = StyleUserInterface();
-  if (uiStyle->mUserInput == StyleUserInput::None ||
-      uiStyle->mUserInput == StyleUserInput::Disabled) {
+  // disabled state affects how we're selected, but we don't want to go through
+  // nsHTMLScrollFrame if we're disabled.
+  if (IsContentDisabled()) {
     return nsFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
   }
-  EventStates eventStates = mContent->AsElement()->State();
-  if (eventStates.HasState(NS_EVENT_STATE_DISABLED))
-    return NS_OK;
 
   return nsHTMLScrollFrame::HandleEvent(aPresContext, aEvent, aEventStatus);
 }
diff --git a/layout/generic/nsFrame.cpp b/layout/generic/nsFrame.cpp
index bbbb5c332..8d4ea8754 100644
--- a/layout/generic/nsFrame.cpp
+++ b/layout/generic/nsFrame.cpp
@@ -5557,6 +5557,19 @@ nsFrame::Reflow(nsPresContext*          aPresContext,
   NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aDesiredSize);
 }
 
+bool
+nsIFrame::IsContentDisabled() const
+{
+  // FIXME(emilio): Doing this via CSS means callers must ensure the style is up
+  // to date, and they don't!
+  if (StyleUserInterface()->mUserInput == StyleUserInput::None) {
+    return true;
+  }
+
+  auto* element = nsGenericHTMLElement::FromContentOrNull(GetContent());
+  return element && element->IsDisabled();
+}
+
 nsresult
 nsFrame::CharacterDataChanged(CharacterDataChangeInfo* aInfo)
 {
diff --git a/layout/generic/nsIFrame.h b/layout/generic/nsIFrame.h
index 57f5c460c..93eb95099 100644
--- a/layout/generic/nsIFrame.h
+++ b/layout/generic/nsIFrame.h
@@ -2436,6 +2436,11 @@ public:
   nsIWidget* GetNearestWidget(nsPoint& aOffset) const;
 
   /**
+   * Whether the content for this frame is disabled, used for event handling.
+   */
+  bool IsContentDisabled() const;
+
+  /**
    * Get the "type" of the frame. May return nullptr.
    *
    * @see nsGkAtoms
diff --git a/layout/style/nsCSSProps.cpp b/layout/style/nsCSSProps.cpp
index ac2978c27..289a16ecd 100644
--- a/layout/style/nsCSSProps.cpp
+++ b/layout/style/nsCSSProps.cpp
@@ -2189,8 +2189,6 @@ const KTableEntry nsCSSProps::kUserFocusKTable[] = {
 
 const KTableEntry nsCSSProps::kUserInputKTable[] = {
   { eCSSKeyword_none,     StyleUserInput::None },
-  { eCSSKeyword_enabled,  StyleUserInput::Enabled },
-  { eCSSKeyword_disabled, StyleUserInput::Disabled },
   { eCSSKeyword_auto,     StyleUserInput::Auto },
   { eCSSKeyword_UNKNOWN,  -1 }
 };
diff --git a/layout/style/nsStyleConsts.h b/layout/style/nsStyleConsts.h
index 6d207aec9..5412eed26 100644
--- a/layout/style/nsStyleConsts.h
+++ b/layout/style/nsStyleConsts.h
@@ -241,8 +241,6 @@ enum class StyleUserSelect : uint8_t {
 // user-input
 enum class StyleUserInput : uint8_t {
   None,
-  Enabled,
-  Disabled,
   Auto,
 };
 
diff --git a/layout/style/res/forms.css b/layout/style/res/forms.css
index e7566e183..95025221d 100644
--- a/layout/style/res/forms.css
+++ b/layout/style/res/forms.css
@@ -425,7 +425,6 @@ optgroup:disabled,
 select:disabled:disabled /* Need the pseudo-class twice to have the specificity
                             be at least the same as select[size][multiple] above */
 {
-  -moz-user-input: disabled;
   color: GrayText;
   background-color: ThreeDLightShadow;
   cursor: inherit;
diff --git a/layout/style/test/property_database.js b/layout/style/test/property_database.js
index c75f7b498..3486d15d0 100644
--- a/layout/style/test/property_database.js
+++ b/layout/style/test/property_database.js
@@ -2203,7 +2203,7 @@ var gCSSProperties = {
     inherited: true,
     type: CSS_TYPE_LONGHAND,
     initial_values: [ "auto" ],
-    other_values: [ "none", "enabled", "disabled" ],
+    other_values: [ "none" ],
     invalid_values: []
   },
   "-moz-user-modify": {