Bug 1155493 - Part 3: Dispatch event when carets are updated, pressed, released, tap, longpressonemptycontent, hidden. r=roc

--HG--
extra : source : ca51748d62b232c8312ff9d8decaf1a16aebf0a2

layout/base/AccessibleCaretManager.cpp

@@ -90,6 +90,7 @@ AccessibleCaretManager::HideCarets()
     AC_LOG("%s", __FUNCTION__);
     mFirstCaret->SetAppearance(Appearance::None);
     mSecondCaret->SetAppearance(Appearance::None);
+    DispatchCaretStateChangedEvent(CaretChangedReason::Visibilitychange);
     CancelCaretTimeoutTimer();
   }
 }
@@ -154,7 +155,8 @@ AccessibleCaretManager::UpdateCaretsForCursorMode()
   // No need to consider whether the caret's position is out of scrollport.
   // According to the spec, we need to explicitly hide it after the scrolling is
   // ended.
-  mFirstCaret->SetPosition(frame, offset);
+  bool oldSecondCaretVisible = mSecondCaret->IsLogicallyVisible();
+  PositionChangedResult caretResult = mFirstCaret->SetPosition(frame, offset);
   mFirstCaret->SetSelectionBarEnabled(false);
   if (nsContentUtils::HasNonEmptyTextContent(
         editingHost, nsContentUtils::eRecurseIntoChildren)) {
@@ -164,6 +166,11 @@ AccessibleCaretManager::UpdateCaretsForCursorMode()
     mFirstCaret->SetAppearance(Appearance::NormalNotShown);
   }
   mSecondCaret->SetAppearance(Appearance::None);
+
+  if ((caretResult == PositionChangedResult::Changed ||
+      oldSecondCaretVisible) && !mActiveCaret) {
+    DispatchCaretStateChangedEvent(CaretChangedReason::Updateposition);
+  }
 }
 
 void
@@ -214,6 +221,14 @@ AccessibleCaretManager::UpdateCaretsForSelectionMode()
   }
 
   UpdateCaretsForTilt();
+
+  if ((firstCaretResult == PositionChangedResult::Changed ||
+       secondCaretResult == PositionChangedResult::Changed ||
+       firstCaretResult == PositionChangedResult::Invisible ||
+       secondCaretResult == PositionChangedResult::Invisible) &&
+      !mActiveCaret) {
+    DispatchCaretStateChangedEvent(CaretChangedReason::Updateposition);
+  }
 }
 
 void
@@ -253,6 +268,7 @@ AccessibleCaretManager::PressCaret(const nsPoint& aPoint)
     mOffsetYToCaretLogicalPosition =
       mActiveCaret->LogicalPosition().y - aPoint.y;
     SetSelectionDragState(true);
+    DispatchCaretStateChangedEvent(CaretChangedReason::Presscaret);
     CancelCaretTimeoutTimer();
     rv = NS_OK;
   }
@@ -279,6 +295,7 @@ AccessibleCaretManager::ReleaseCaret()
 
   mActiveCaret = nullptr;
   SetSelectionDragState(false);
+  DispatchCaretStateChangedEvent(CaretChangedReason::Releasecaret);
   LaunchCaretTimeoutTimer();
   return NS_OK;
 }
@@ -291,6 +308,7 @@ AccessibleCaretManager::TapCaret(const nsPoint& aPoint)
   nsresult rv = NS_ERROR_FAILURE;
 
   if (GetCaretMode() == CaretMode::Cursor) {
+    DispatchCaretStateChangedEvent(CaretChangedReason::Taponcaret);
     rv = NS_OK;
   }
 
@@ -331,6 +349,7 @@ AccessibleCaretManager::SelectWordOrShortcut(const nsPoint& aPoint)
                          editingHost, nsContentUtils::eRecurseIntoChildren))) {
     // Content is empty. No need to select word.
     AC_LOG("%s, Cannot select word bacause content is empty", __FUNCTION__);
+    DispatchCaretStateChangedEvent(CaretChangedReason::Longpressonemptycontent);
     return NS_OK;
   }