MacViews: Allow force touch in views::Textfield

ui/views/cocoa/bridged_content_view.mm

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "ui/views/cocoa/bridged_content_view.h"
 
 #include "base/logging.h"
 #import "base/mac/mac_util.h"
 #import "base/mac/scoped_nsobject.h"
 #include "base/strings/sys_string_conversions.h"
@@ skipping 142 matching lines @@
     } else {
       *actual_range =
           gfx::Range(requested_range.start(), i + composition_range.start());
       return union_rect;
     }
   }
   *actual_range = requested_range;
   return union_rect;
 }
 
+NSAttributedString* AttributedStringFromRenderText(
+    const gfx::RenderText* render_text,
+    const gfx::Range& range) {
+  return ...
+}
+
 }  // namespace
 
 @interface BridgedContentView ()
 
 // Translates keycodes and modifiers on |theEvent| to ui::KeyEvents and passes
 // the event to the InputMethod for dispatch.
 - (void)handleKeyEvent:(NSEvent*)theEvent;
 
 // Handles an NSResponder Action Message by mapping it to a corresponding text
 // editing command from ui_strings.grd and, when not being sent to a
@@ skipping 223 matching lines @@
 
   ui::MouseEvent event(theEvent);
 
   // Aura updates tooltips with the help of aura::Window::AddPreTargetHandler().
   // Mac hooks in here.
   [self updateTooltipIfRequiredAt:event.location()];
 
   hostedView_->GetWidget()->OnMouseEvent(&event);
 }
 
+- (void)forceTouchEvent:(NSEvent*)theEvent {
+  if (!textInputClient_ || !ui::ForceTouchInvokesQuickLook())
+    return;
+
+  ui::MouseEvent event(theEvent);
+  gfx::Range range;
+  gfx::Point baselinePoint;
+  const gfx::RenderText* renderText =
+      textInputClient_->GetStringAtPointInWindow(event.location(), &range,
+                                                 &baselinePoint);
+  if (!renderText)
+    return;
+
+  NSAttributedString* attributedString =
+      AttributedStringFromRenderText(renderText, range);
+
+  dispatch_async(dispatch_get_main_queue(), ^{
+    [self showDefinitionForAttributedString:attributedString
+                                    atPoint:baselinePoint];
+  });
+}
+
 // NSView implementation.
 
 - (BOOL)acceptsFirstResponder {
   return YES;
 }
 
 - (BOOL)becomeFirstResponder {
   BOOL result = [super becomeFirstResponder];
   if (result && hostedView_)
     hostedView_->GetWidget()->GetFocusManager()->RestoreFocusedView();
@@ skipping 511 matching lines @@
   }
 
   return [super accessibilityAttributeValue:attribute];
 }
 
 - (id)accessibilityHitTest:(NSPoint)point {
   return [hostedView_->GetNativeViewAccessible() accessibilityHitTest:point];
 }
 
 @end