Move OverscrollController to RenderWidgetHostViewAura

content/browser/renderer_host/render_widget_host_impl.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.
 
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 
 #include <math.h>
 #include <set>
 #include <utility>
 
@@ skipping 20 matching lines @@
 #include "content/browser/gpu/gpu_process_host_ui_shim.h"
 #include "content/browser/gpu/gpu_surface_tracker.h"
 #include "content/browser/renderer_host/dip_util.h"
 #include "content/browser/renderer_host/input/input_router_config_helper.h"
 #include "content/browser/renderer_host/input/input_router_impl.h"
 #include "content/browser/renderer_host/input/synthetic_gesture.h"
 #include "content/browser/renderer_host/input/synthetic_gesture_controller.h"
 #include "content/browser/renderer_host/input/synthetic_gesture_target.h"
 #include "content/browser/renderer_host/input/timeout_monitor.h"
 #include "content/browser/renderer_host/input/touch_emulator.h"
-#include "content/browser/renderer_host/overscroll_controller.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/render_widget_helper.h"
 #include "content/browser/renderer_host/render_widget_host_delegate.h"
 #include "content/browser/renderer_host/render_widget_host_view_base.h"
 #include "content/common/accessibility_messages.h"
 #include "content/common/content_constants_internal.h"
 #include "content/common/cursors/webcursor.h"
 #include "content/common/gpu/gpu_messages.h"
 #include "content/common/host_shared_bitmap_manager.h"
@@ skipping 173 matching lines @@
     process_->WidgetRestored();
 
   accessibility_mode_ =
       BrowserAccessibilityStateImpl::GetInstance()->accessibility_mode();
 
   input_router_.reset(new InputRouterImpl(
       process_, this, this, routing_id_, GetInputRouterConfigForPlatform()));
 
   touch_emulator_.reset();
 
-#if defined(USE_AURA)
-  bool overscroll_enabled = CommandLine::ForCurrentProcess()->
-      GetSwitchValueASCII(switches::kOverscrollHistoryNavigation) != "0";
-  SetOverscrollControllerEnabled(overscroll_enabled);
-#endif
-
   if (GetProcess()->IsGuest() || !CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kDisableHangMonitor)) {
     hang_monitor_timeout_.reset(new TimeoutMonitor(
         base::Bind(&RenderWidgetHostImpl::RendererIsUnresponsive,
                    weak_factory_.GetWeakPtr())));
   }
 }
 
 RenderWidgetHostImpl::~RenderWidgetHostImpl() {
   SetView(NULL);
@@ skipping 132 matching lines @@
 
   last_view_screen_rect_ = view_->GetViewBounds();
   last_window_screen_rect_ = view_->GetBoundsInRootWindow();
   Send(new ViewMsg_UpdateScreenRects(
       GetRoutingID(), last_view_screen_rect_, last_window_screen_rect_));
   if (delegate_)
     delegate_->DidSendScreenRects(this);
   waiting_for_screen_rects_ack_ = true;
 }
 
-void RenderWidgetHostImpl::SetOverscrollControllerEnabled(bool enabled) {
-  if (!enabled)
-    overscroll_controller_.reset();
-  else if (!overscroll_controller_)
-    overscroll_controller_.reset(new OverscrollController());
-}
-
 void RenderWidgetHostImpl::SuppressNextCharEvents() {
   suppress_next_char_events_ = true;
 }
 
 void RenderWidgetHostImpl::FlushInput() {
   input_router_->Flush();
   if (synthetic_gesture_controller_)
     synthetic_gesture_controller_->Flush(base::TimeTicks::Now());
 }
 
@@ skipping 230 matching lines @@
   Send(new InputMsg_SetFocus(routing_id_, true));
 }
 
 void RenderWidgetHostImpl::Blur() {
   // If there is a pending mouse lock request, we don't want to reject it at
   // this point. The user can switch focus back to this view and approve the
   // request later.
   if (IsMouseLocked())
     view_->UnlockMouse();
 
-  // If there is a pending overscroll, then that should be cancelled.
-  if (overscroll_controller_)
-    overscroll_controller_->Cancel();
-
   if (touch_emulator_)
     touch_emulator_->CancelTouch();
 
   Send(new InputMsg_SetFocus(routing_id_, false));
 }
 
 void RenderWidgetHostImpl::LostCapture() {
   if (touch_emulator_)
     touch_emulator_->CancelTouch();
 
@@ skipping 536 matching lines @@
   // Clearing this flag causes us to re-create the renderer when recovering
   // from a crashed renderer.
   renderer_initialized_ = false;
 
   waiting_for_screen_rects_ack_ = false;
 
   // Reset to ensure that input routing works with a new renderer.
   input_router_.reset(new InputRouterImpl(
       process_, this, this, routing_id_, GetInputRouterConfigForPlatform()));
 
-  if (overscroll_controller_)
-    overscroll_controller_->Reset();
-
- // Must reset these to ensure that keyboard events work with a new renderer.
+  // Must reset these to ensure that keyboard events work with a new renderer.
   suppress_next_char_events_ = false;
 
   // Reset some fields in preparation for recovering from a crash.
   ResetSizeAndRepaintPendingFlags();
   current_size_.SetSize(0, 0);
   is_hidden_ = false;
 
   // Reset this to ensure the hung renderer mechanism is working properly.
   in_flight_event_count_ = 0;
 
@@ skipping 575 matching lines @@
                : INPUT_EVENT_ACK_STATE_NOT_CONSUMED;
 }
 
 void RenderWidgetHostImpl::IncrementInFlightEventCount() {
   StartHangMonitorTimeout(
       TimeDelta::FromMilliseconds(hung_renderer_delay_ms_));
   increment_in_flight_event_count();
 }
 
 void RenderWidgetHostImpl::DecrementInFlightEventCount() {
-  DCHECK(in_flight_event_count_ >= 0);
+  DCHECK_GT(in_flight_event_count_, 0);
   // Cancel pending hung renderer checks since the renderer is responsive.
   if (decrement_in_flight_event_count() <= 0)
     StopHangMonitorTimeout();
 }
 
 void RenderWidgetHostImpl::OnHasTouchEventHandlers(bool has_handlers) {
   has_touch_handler_ = has_handlers;
 }
 
-OverscrollController* RenderWidgetHostImpl::GetOverscrollController() const {
-  return overscroll_controller_.get();
-}
-
 void RenderWidgetHostImpl::DidFlush() {
   if (synthetic_gesture_controller_)
     synthetic_gesture_controller_->OnDidFlushInput();
   if (view_)
     view_->OnDidFlushInput();
 }
 
 void RenderWidgetHostImpl::DidOverscroll(const DidOverscrollParams& params) {
   if (view_)
     view_->DidOverscroll(params);
@@ skipping 25 matching lines @@
     InputEventAckState ack_result) {
   if (!wheel_event.latency.FindLatency(
           ui::INPUT_EVENT_LATENCY_RENDERING_SCHEDULED_COMPONENT, 0, NULL)) {
     // MouseWheelEvent latency ends when it is acked but does not cause any
     // rendering scheduled.
     ui::LatencyInfo latency = wheel_event.latency;
     latency.AddLatencyNumber(
         ui::INPUT_EVENT_LATENCY_TERMINATED_MOUSE_COMPONENT, 0, 0);
   }
 
-  const bool processed = (INPUT_EVENT_ACK_STATE_CONSUMED == ack_result);
-  if (!processed && !is_hidden() && view_) {
-    if (!delegate_->HandleWheelEvent(wheel_event.event))
-      view_->UnhandledWheelEvent(wheel_event.event);
+  if (!is_hidden() && view_) {
+    if (ack_result != INPUT_EVENT_ACK_STATE_CONSUMED &&
+        delegate_->HandleWheelEvent(wheel_event.event)) {
+      ack_result = INPUT_EVENT_ACK_STATE_CONSUMED;
+    }
+    view_->WheelEventAck(wheel_event.event, ack_result);
   }
 }
 
 void RenderWidgetHostImpl::OnGestureEventAck(
     const GestureEventWithLatencyInfo& event,
     InputEventAckState ack_result) {
   if (!event.latency.FindLatency(
           ui::INPUT_EVENT_LATENCY_RENDERING_SCHEDULED_COMPONENT, 0, NULL)) {
     // GestureEvent latency ends when it is acked but does not cause any
     // rendering scheduled.
@@ skipping 441 matching lines @@
   }
 }
 
 SkBitmap::Config RenderWidgetHostImpl::PreferredReadbackFormat() {
   if (view_)
     return view_->PreferredReadbackFormat();
   return SkBitmap::kARGB_8888_Config;
 }
 
 }  // namespace content