Convert USERSELECT_ALL to a runtime enabled feature.

Source/core/page/EventHandler.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Alexey Proskuryakov (ap@webkit.org)
  * Copyright (C) 2012 Digia Plc. and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 11 matching lines @@
  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "core/page/EventHandler.h"
 
 #include "HTMLNames.h"
+#include "RuntimeEnabledFeatures.h"
 #include "SVGNames.h"
 #include "bindings/v8/ExceptionStatePlaceholder.h"
 #include "core/dom/Document.h"
 #include "core/dom/DocumentEventQueue.h"
 #include "core/dom/DocumentMarkerController.h"
 #include "core/dom/EventNames.h"
 #include "core/dom/EventPathWalker.h"
 #include "core/dom/FullscreenElementStack.h"
 #include "core/dom/KeyboardEvent.h"
 #include "core/dom/MouseEvent.h"
@@ skipping 333 matching lines @@
 static inline bool dispatchSelectStart(Node* node)
 {
     if (!node || !node->renderer())
         return true;
 
     return node->dispatchEvent(Event::create(eventNames().selectstartEvent, true, true));
 }
 
 static VisibleSelection expandSelectionToRespectUserSelectAll(Node* targetNode, const VisibleSelection& selection)
 {
-#if ENABLE(USERSELECT_ALL)
     Node* rootUserSelectAll = Position::rootUserSelectAllForNode(targetNode);
     if (!rootUserSelectAll)
         return selection;
 
     VisibleSelection newSelection(selection);
     newSelection.setBase(positionBeforeNode(rootUserSelectAll).upstream(CanCrossEditingBoundary));
     newSelection.setExtent(positionAfterNode(rootUserSelectAll).downstream(CanCrossEditingBoundary));
 
     return newSelection;
-#else
-    UNUSED_PARAM(targetNode);
-    return selection;
-#endif
 }
 
 bool EventHandler::updateSelectionForMouseDownDispatchingSelectStart(Node* targetNode, const VisibleSelection& selection, TextGranularity granularity)
 {
     if (Position::nodeIsUserSelectNone(targetNode))
         return false;
 
     if (!dispatchSelectStart(targetNode))
         return false;
 
@@ skipping 355 matching lines @@
 
     if (m_selectionInitiationState == HaveNotStartedSelection && !dispatchSelectStart(target))
         return;
 
     if (m_selectionInitiationState != ExtendedSelection) {
         // Always extend selection here because it's caused by a mouse drag
         m_selectionInitiationState = ExtendedSelection;
         newSelection = VisibleSelection(targetPosition);
     }
 
-#if ENABLE(USERSELECT_ALL)
-    Node* rootUserSelectAllForMousePressNode = Position::rootUserSelectAllForNode(m_mousePressNode.get());
-    if (rootUserSelectAllForMousePressNode && rootUserSelectAllForMousePressNode == Position::rootUserSelectAllForNode(target)) {
-        newSelection.setBase(positionBeforeNode(rootUserSelectAllForMousePressNode).upstream(CanCrossEditingBoundary));
-        newSelection.setExtent(positionAfterNode(rootUserSelectAllForMousePressNode).downstream(CanCrossEditingBoundary));
+    if (RuntimeEnabledFeatures::userSelectAllEnabled()) {
+        Node* rootUserSelectAllForMousePressNode = Position::rootUserSelectAllForNode(m_mousePressNode.get());
+        if (rootUserSelectAllForMousePressNode && rootUserSelectAllForMousePressNode == Position::rootUserSelectAllForNode(target)) {
+            newSelection.setBase(positionBeforeNode(rootUserSelectAllForMousePressNode).upstream(CanCrossEditingBoundary));
+            newSelection.setExtent(positionAfterNode(rootUserSelectAllForMousePressNode).downstream(CanCrossEditingBoundary));
+        } else {
+            // Reset base for user select all when base is inside user-select-all area and extent < base.
+            if (rootUserSelectAllForMousePressNode && comparePositions(target->renderer()->positionForPoint(hitTestResult.localPoint()), m_mousePressNode->renderer()->positionForPoint(m_dragStartPos)) < 0)
+                newSelection.setBase(positionAfterNode(rootUserSelectAllForMousePressNode).downstream(CanCrossEditingBoundary));
+
+            Node* rootUserSelectAllForTarget = Position::rootUserSelectAllForNode(target);
+            if (rootUserSelectAllForTarget && m_mousePressNode->renderer() && comparePositions(target->renderer()->positionForPoint(hitTestResult.localPoint()), m_mousePressNode->renderer()->positionForPoint(m_dragStartPos)) < 0)
+                newSelection.setExtent(positionBeforeNode(rootUserSelectAllForTarget).upstream(CanCrossEditingBoundary));
+            else if (rootUserSelectAllForTarget && m_mousePressNode->renderer())
+                newSelection.setExtent(positionAfterNode(rootUserSelectAllForTarget).downstream(CanCrossEditingBoundary));
+            else
+                newSelection.setExtent(targetPosition);
+        }
     } else {
-        // Reset base for user select all when base is inside user-select-all area and extent < base.
-        if (rootUserSelectAllForMousePressNode && comparePositions(target->renderer()->positionForPoint(hitTestResult.localPoint()), m_mousePressNode->renderer()->positionForPoint(m_dragStartPos)) < 0)
-            newSelection.setBase(positionAfterNode(rootUserSelectAllForMousePressNode).downstream(CanCrossEditingBoundary));
-
-        Node* rootUserSelectAllForTarget = Position::rootUserSelectAllForNode(target);
-        if (rootUserSelectAllForTarget && m_mousePressNode->renderer() && comparePositions(target->renderer()->positionForPoint(hitTestResult.localPoint()), m_mousePressNode->renderer()->positionForPoint(m_dragStartPos)) < 0)
-            newSelection.setExtent(positionBeforeNode(rootUserSelectAllForTarget).upstream(CanCrossEditingBoundary));
-        else if (rootUserSelectAllForTarget && m_mousePressNode->renderer())
-            newSelection.setExtent(positionAfterNode(rootUserSelectAllForTarget).downstream(CanCrossEditingBoundary));
-        else
-            newSelection.setExtent(targetPosition);
+        newSelection.setExtent(targetPosition);
     }
-#else
-    newSelection.setExtent(targetPosition);
-#endif
 
     if (m_frame->selection()->granularity() != CharacterGranularity)
         newSelection.expandUsingGranularity(m_frame->selection()->granularity());
 
     m_frame->selection()->setNonDirectionalSelectionIfNeeded(newSelection, m_frame->selection()->granularity(),
         FrameSelection::AdjustEndpointsAtBidiBoundary);
 }
 
 void EventHandler::lostMouseCapture()
 {
@@ skipping 3035 matching lines @@
 unsigned EventHandler::accessKeyModifiers()
 {
 #if OS(DARWIN)
     return PlatformEvent::CtrlKey | PlatformEvent::AltKey;
 #else
     return PlatformEvent::AltKey;
 #endif
 }
 
 } // namespace WebCore