Look Up on Force Touch

third_party/WebKit/Source/core/editing/SelectionController.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)
  * Copyright (C) 2015 Google Inc. All rights reserved.
  *
  * 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
@@ skipping 525 matching lines @@
     return handled;
 }
 
 bool SelectionController::handleMouseReleaseEvent(const MouseEventWithHitTestResults& event, const LayoutPoint& dragStartPos)
 {
     if (RuntimeEnabledFeatures::selectionForComposedTreeEnabled())
         return handleMouseReleaseEventAlgorithm<EditingInComposedTreeStrategy>(event, dragStartPos);
     return handleMouseReleaseEventAlgorithm<EditingStrategy>(event, dragStartPos);
 }
 
+bool SelectionController::selectWordAtPositionIfAny(const IntPoint& position)
+{
+    HitTestRequest request(HitTestRequest::Active);
+    HitTestResult result(request, position);
+    m_frame->document()->layoutView()->hitTest(result);

[Rick Byers, 2015/12/21 16:31:08]

You just did a hit-test up in WebViewImpl, it's a shame to do another one (hit
tests are expensive).  Can you instead do a single hit-test in WebViewImpl and
take a HitTestResults in your SelectionController API?  That would also make it
a lot closer to existing APIs like selectClosestWordFromMouseEvent and
handleMousePressEventDoubleClick.  I think there's been some effort to eliminate
unnecessary hit tests from inside the editing code.

[spqchan, 2016/01/06 22:52:31]

Done.

+
+    if (result.scrollbar()
+        || result.isLiveLink()
+        || !(selection().isContentEditable()
+        || (result.innerNode() && result.innerNode()->isTextNode())))
+        return false;
+
+    selectClosestWordFromHitTestResult<EditingStrategy>(result, AppendTrailingWhitespace::DontAppend);
+    return true;
+}
+
 bool SelectionController::handlePasteGlobalSelection(const PlatformMouseEvent& mouseEvent)
 {
     // If the event was a middle click, attempt to copy global selection in after
     // the newly set caret position.
     //
     // This code is called from either the mouse up or mouse down handling. There
     // is some debate about when the global selection is pasted:
     //   xterm: pastes on up.
     //   GTK: pastes on down.
     //   Qt: pastes on up.
@@ skipping 123 matching lines @@
     else
         m_selectionState = SelectionState::HaveNotStartedSelection;
 }
 
 FrameSelection& SelectionController::selection() const
 {
     return m_frame->selection();
 }
 
 } // namespace blink