Prevent the context menu from showing when long pressing the window controls

ui/views/view.cc

 // Copyright (c) 2012 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.
 
 #define _USE_MATH_DEFINES // For VC++ to get M_PI. This has to be first.
 
 #include "ui/views/view.h"
 
 #include <algorithm>
 #include <cmath>
 
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "third_party/skia/include/core/SkRect.h"
 #include "ui/accessibility/ax_enums.h"
 #include "ui/base/cursor/cursor.h"
 #include "ui/base/dragdrop/drag_drop_types.h"
-#include "ui/base/ui_base_switches_util.h"
 #include "ui/compositor/compositor.h"
 #include "ui/compositor/layer.h"
 #include "ui/compositor/layer_animator.h"
 #include "ui/events/event_target_iterator.h"
 #include "ui/gfx/canvas.h"
 #include "ui/gfx/interpolated_transform.h"
 #include "ui/gfx/path.h"
 #include "ui/gfx/point3_f.h"
 #include "ui/gfx/point_conversions.h"
 #include "ui/gfx/rect_conversions.h"
@@ skipping 48 matching lines @@
     root = root->parent();
   return root;
 }
 
 }  // namespace
 
 namespace views {
 
 namespace internal {
 
-// This event handler receives events in the post-target phase and takes care of
-// the following:
-//   - Generates context menu, or initiates drag-and-drop, from gesture events.
-class PostEventDispatchHandler : public ui::EventHandler {
- public:
-  explicit PostEventDispatchHandler(View* owner)
-      : owner_(owner),
-        touch_dnd_enabled_(switches::IsTouchDragDropEnabled()) {
-  }
-  virtual ~PostEventDispatchHandler() {}
-
- private:
-  // Overridden from ui::EventHandler:
-  virtual void OnGestureEvent(ui::GestureEvent* event) OVERRIDE {
-    DCHECK_EQ(ui::EP_POSTTARGET, event->phase());
-    if (event->handled())
-      return;
-
-    if (touch_dnd_enabled_) {
-      if (event->type() == ui::ET_GESTURE_LONG_PRESS &&
-          (!owner_->drag_controller() ||
-           owner_->drag_controller()->CanStartDragForView(
-              owner_, event->location(), event->location()))) {
-        if (owner_->DoDrag(*event, event->location(),
-            ui::DragDropTypes::DRAG_EVENT_SOURCE_TOUCH)) {
-          event->StopPropagation();
-          return;
-        }
-      }
-    }
-
-    if (owner_->context_menu_controller() &&
-        (event->type() == ui::ET_GESTURE_LONG_PRESS ||
-         event->type() == ui::ET_GESTURE_LONG_TAP ||
-         event->type() == ui::ET_GESTURE_TWO_FINGER_TAP)) {
-      gfx::Point location(event->location());
-      View::ConvertPointToScreen(owner_, &location);
-      owner_->ShowContextMenu(location, ui::MENU_SOURCE_TOUCH);
-      event->StopPropagation();
-    }
-  }
-
-  View* owner_;
-  bool touch_dnd_enabled_;
-
-  DISALLOW_COPY_AND_ASSIGN(PostEventDispatchHandler);
-};
-
 }  // namespace internal
 
 // static
 ViewsDelegate* ViewsDelegate::views_delegate = NULL;
 
 // static
 const char View::kViewClassName[] = "View";
 
 ////////////////////////////////////////////////////////////////////////////////
 // View, public:
@@ skipping 15 matching lines @@
       flip_canvas_on_paint_for_rtl_ui_(false),
       paint_to_layer_(false),
       accelerator_focus_manager_(NULL),
       registered_accelerator_count_(0),
       next_focusable_view_(NULL),
       previous_focusable_view_(NULL),
       focusable_(false),
       accessibility_focusable_(false),
       context_menu_controller_(NULL),
       drag_controller_(NULL),
-      post_dispatch_handler_(new internal::PostEventDispatchHandler(this)),
       native_view_accessibility_(NULL) {
-  AddPostTargetHandler(post_dispatch_handler_.get());
 }
 
 View::~View() {
   if (parent_)
     parent_->RemoveChildView(this);
 
   ViewStorage::GetInstance()->ViewRemoved(this);
 
   for (Views::const_iterator i(children_.begin()); i != children_.end(); ++i) {
     (*i)->parent_ = NULL;
@@ skipping 2348 matching lines @@
   // Message the RootView to do the drag and drop. That way if we're removed
   // the RootView can detect it and avoid calling us back.
   gfx::Point widget_location(event.location());
   ConvertPointToWidget(this, &widget_location);
   widget->RunShellDrag(this, data, widget_location, drag_operations, source);
   // WARNING: we may have been deleted.
   return true;
 }
 
 }  // namespace views