Extract minimal RenderViewHost interface for embedders, leaving

content/browser/renderer_host/render_widget_host_view_gtk.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_view_gtk.h"
 
 // If this gets included after the gtk headers, then a bunch of compiler
 // errors happen because of a "#define Status int" in Xlib.h, which interacts
 // badly with net::URLRequestStatus::Status.
 #include "content/common/view_messages.h"
@@ skipping 210 matching lines @@
     // We return TRUE because we did handle the event. If it turns out webkit
     // can't handle the event, we'll deal with it in
     // RenderView::UnhandledKeyboardEvent().
     return TRUE;
   }
 
   static gboolean OnFocusIn(GtkWidget* widget,
                             GdkEventFocus* focus,
                             RenderWidgetHostViewGtk* host_view) {
     host_view->ShowCurrentCursor();
-    RenderWidgetHostImpl::FromRWHV(host_view)->GotFocus();
-    RenderWidgetHostImpl::FromRWHV(host_view)->SetActive(true);
+    RenderWidgetHostImpl* host =
+        RenderWidgetHostImpl::From(host_view->GetRenderWidgetHost());
+    host->GotFocus();
+    host->SetActive(true);
 
     // The only way to enable a GtkIMContext object is to call its focus in
     // handler.
     host_view->im_context_->OnFocusIn();
 
     return TRUE;
   }
 
   static gboolean OnFocusOut(GtkWidget* widget,
                              GdkEventFocus* focus,
                              RenderWidgetHostViewGtk* host_view) {
     // Whenever we lose focus, set the cursor back to that of our parent window,
     // which should be the default arrow.
     gdk_window_set_cursor(gtk_widget_get_window(widget), NULL);
     // If we are showing a context menu, maintain the illusion that webkit has
     // focus.
     if (!host_view->IsShowingContextMenu()) {
-      RenderWidgetHostImpl::FromRWHV(host_view)->SetActive(false);
-      RenderWidgetHostImpl::FromRWHV(host_view)->Blur();
+      RenderWidgetHostImpl* host =
+          RenderWidgetHostImpl::From(host_view->GetRenderWidgetHost());
+      host->SetActive(false);
+      host->Blur();
     }
 
     // Prevents us from stealing input context focus in OnGrabNotify() handler.
     host_view->was_imcontext_focused_before_grab_ = false;
 
     // Disable the GtkIMContext object.
     host_view->im_context_->OnFocusOut();
 
     return TRUE;
   }
@@ skipping 42 matching lines @@
             event->button == 8 ? GDK_SCROLL_LEFT : GDK_SCROLL_RIGHT;
       } else {
         scroll_event.direction =
             event->button == 8 ? GDK_SCROLL_UP : GDK_SCROLL_DOWN;
       }
       scroll_event.device = event->device;
       scroll_event.x_root = event->x_root;
       scroll_event.y_root = event->y_root;
       WebMouseWheelEvent web_event =
           WebInputEventFactory::mouseWheelEvent(&scroll_event);
-      RenderWidgetHostImpl::FromRWHV(
-          host_view)->ForwardWheelEvent(web_event);
+      RenderWidgetHostImpl::From(
+          host_view->GetRenderWidgetHost())->ForwardWheelEvent(web_event);
     }
 #endif
 
     if (event->type != GDK_BUTTON_RELEASE)
       host_view->set_last_mouse_down(event);
 
     if (!(event->button == 1 || event->button == 2 || event->button == 3))
       return FALSE;  // We do not forward any other buttons to the renderer.
     if (event->type == GDK_2BUTTON_PRESS || event->type == GDK_3BUTTON_PRESS)
       return FALSE;
@@ skipping 34 matching lines @@
       event->y = y;
     }
 
     // TODO(evanm): why is this necessary here but not in test shell?
     // This logic is the same as GtkButton.
     if (event->type == GDK_BUTTON_PRESS && !gtk_widget_has_focus(widget))
       gtk_widget_grab_focus(widget);
 
     host_view->is_popup_first_mouse_release_ = false;
     RenderWidgetHostImpl* widget_host =
-        RenderWidgetHostImpl::FromRWHV(host_view);
+        RenderWidgetHostImpl::From(host_view->GetRenderWidgetHost());
     if (widget_host)
       widget_host->ForwardMouseEvent(WebInputEventFactory::mouseEvent(event));
 
     // Although we did handle the mouse event, we need to let other handlers
     // run (in particular the one installed by TabContentsViewGtk).
     return FALSE;
   }
 
   static gboolean OnMouseMoveEvent(GtkWidget* widget,
                                    GdkEventMotion* event,
@@ skipping 23 matching lines @@
         host_view->mouse_has_been_warped_to_new_center_ = true;
 
       host_view->ModifyEventMovementAndCoords(&mouse_event);
 
       if (!moved_to_center &&
           (mouse_event.movementX || mouse_event.movementY)) {
         GdkDisplay* display = gtk_widget_get_display(widget);
         GdkScreen* screen = gtk_widget_get_screen(widget);
         gdk_display_warp_pointer(display, screen, center.x(), center.y());
         if (host_view->mouse_has_been_warped_to_new_center_)
-          RenderWidgetHostImpl::FromRWHV(
-              host_view)->ForwardMouseEvent(mouse_event);
+          RenderWidgetHostImpl::From(
+              host_view->GetRenderWidgetHost())->ForwardMouseEvent(mouse_event);
       }
     } else {  // Mouse is not locked.
       host_view->ModifyEventMovementAndCoords(&mouse_event);
-      RenderWidgetHostImpl::FromRWHV(
-          host_view)->ForwardMouseEvent(mouse_event);
+      RenderWidgetHostImpl::From(
+          host_view->GetRenderWidgetHost())->ForwardMouseEvent(mouse_event);
     }
     return FALSE;
   }
 
   static gboolean OnCrossingEvent(GtkWidget* widget,
                                   GdkEventCrossing* event,
                                   RenderWidgetHostViewGtk* host_view) {
     const int any_button_mask =
         GDK_BUTTON1_MASK |
         GDK_BUTTON2_MASK |
         GDK_BUTTON3_MASK |
         GDK_BUTTON4_MASK |
         GDK_BUTTON5_MASK;
 
     // Only forward crossing events if the mouse button is not down.
     // (When the mouse button is down, the proper events are already being
     // sent by ButtonPressReleaseEvent and MouseMoveEvent, above, and if we
     // additionally send this crossing event with the state indicating the
     // button is down, it causes problems with drag and drop in WebKit.)
     if (!(event->state & any_button_mask)) {
       WebKit::WebMouseEvent mouse_event =
           WebInputEventFactory::mouseEvent(event);
       host_view->ModifyEventMovementAndCoords(&mouse_event);
       // When crossing out and back into a render view the movement values
       // must represent the instantaneous movement of the mouse, not the jump
       // from the exit to re-entry point.
       mouse_event.movementX = 0;
       mouse_event.movementY = 0;
-      RenderWidgetHostImpl::FromRWHV(
-          host_view)->ForwardMouseEvent(mouse_event);
+      RenderWidgetHostImpl::From(
+          host_view->GetRenderWidgetHost())->ForwardMouseEvent(mouse_event);
     }
 
     return FALSE;
   }
 
   static gboolean OnClientEvent(GtkWidget* widget,
                                 GdkEventClient* event,
                                 RenderWidgetHostViewGtk* host_view) {
     VLOG(1) << "client event type: " << event->message_type
             << " data_format: " << event->data_format
@@ skipping 93 matching lines @@
       else
         web_event.deltaY = -GetScrollPixelsPerTick();
       web_event.deltaY += GetPendingScrollDelta(true, event->state);
     } else {
       if (event->direction == GDK_SCROLL_LEFT)
         web_event.deltaX = GetScrollPixelsPerTick();
       else
         web_event.deltaX = -GetScrollPixelsPerTick();
       web_event.deltaX += GetPendingScrollDelta(false, event->state);
     }
-    RenderWidgetHostImpl::FromRWHV(host_view)->ForwardWheelEvent(web_event);
+    RenderWidgetHostImpl::From(
+        host_view->GetRenderWidgetHost())->ForwardWheelEvent(web_event);
     return FALSE;
   }
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(RenderWidgetHostViewGtkWidget);
 };
 
 RenderWidgetHostViewGtk::RenderWidgetHostViewGtk(RenderWidgetHost* widget_host)
-    : about_to_validate_and_paint_(false),
+    : host_(RenderWidgetHostImpl::From(widget_host)),
+      about_to_validate_and_paint_(false),
       is_hidden_(false),
       is_loading_(false),
       parent_(NULL),
       is_popup_first_mouse_release_(true),
       was_imcontext_focused_before_grab_(false),
       do_x_grab_(false),
       is_fullscreen_(false),
       destroy_handler_id_(0),
       dragged_at_horizontal_edge_(0),
       dragged_at_vertical_edge_(0),
       compositing_surface_(gfx::kNullPluginWindow),
       last_mouse_down_(NULL) {
-  host_ = static_cast<RenderWidgetHostImpl*>(widget_host);
   host_->SetView(this);
 }
 
 RenderWidgetHostViewGtk::~RenderWidgetHostViewGtk() {
   UnlockMouse();
   set_last_mouse_down(NULL);
   view_.Destroy();
 }
 
 void RenderWidgetHostViewGtk::InitAsChild(
@@ skipping 432 matching lines @@
     int gpu_host_id) {
   RenderWidgetHostImpl::AcknowledgePostSubBuffer(params.route_id, gpu_host_id);
 }
 
 void RenderWidgetHostViewGtk::AcceleratedSurfaceSuspend() {
 }
 
 
 void RenderWidgetHostViewGtk::SetBackground(const SkBitmap& background) {
   content::RenderWidgetHostViewBase::SetBackground(background);
-  host_->Send(new ViewMsg_SetBackground(host_->routing_id(), background));
+  host_->Send(new ViewMsg_SetBackground(host_->GetRoutingID(), background));
 }
 
 void RenderWidgetHostViewGtk::ModifyEventForEdgeDragging(
     GtkWidget* widget, GdkEventMotion* event) {
   // If the widget is aligned with an edge of the monitor its on and the user
   // attempts to drag past that edge we track the number of times it has
   // occurred, so that we can force the widget to scroll when it otherwise
   // would be unable to, by modifying the (x,y) position in the drag
   // event that we forward on to webkit. If we get a move that's no longer a
   // drag or a drag indicating the user is no longer at that edge we stop
@@ skipping 41 matching lines @@
   dragged_at_horizontal_edge_ = new_dragged_at_horizontal_edge;
   dragged_at_vertical_edge_ = new_dragged_at_vertical_edge;
 }
 
 void RenderWidgetHostViewGtk::Paint(const gfx::Rect& damage_rect) {
   TRACE_EVENT0("ui::gtk", "RenderWidgetHostViewGtk::Paint");
 
   // If the GPU process is rendering directly into the View,
   // call the compositor directly.
   RenderWidgetHostImpl* render_widget_host =
-      static_cast<RenderWidgetHostImpl*>(GetRenderWidgetHost());
+      RenderWidgetHostImpl::From(GetRenderWidgetHost());
   if (render_widget_host->is_accelerated_compositing_active()) {
     host_->ScheduleComposite();
     return;
   }
 
   GdkWindow* window = gtk_widget_get_window(view_.get());
   DCHECK(!about_to_validate_and_paint_);
 
   invalid_rect_ = damage_rect;
   about_to_validate_and_paint_ = true;
@@ skipping 198 matching lines @@
 void RenderWidgetHostViewGtk::ForwardKeyboardEvent(
     const NativeWebKeyboardEvent& event) {
   if (!host_)
     return;
 
 #if !defined(OS_CHROMEOS)
   EditCommands edit_commands;
   if (!event.skip_in_browser &&
       key_bindings_handler_->Match(event, &edit_commands)) {
     host_->Send(new ViewMsg_SetEditCommandsForNextKeyEvent(
-        host_->routing_id(), edit_commands));
+        host_->GetRoutingID(), edit_commands));
     NativeWebKeyboardEvent copy_event(event);
     copy_event.match_edit_command = true;
     host_->ForwardKeyboardEvent(copy_event);
     return;
   }
 #endif
 
   host_->ForwardKeyboardEvent(event);
 }
 
@@ skipping 87 matching lines @@
   return new RenderWidgetHostViewGtk(widget);
 }
 
 // static
 void content::RenderWidgetHostViewPort::GetDefaultScreenInfo(
     WebKit::WebScreenInfo* results) {
   GdkWindow* gdk_window =
       gdk_display_get_default_group(gdk_display_get_default());
   content::GetScreenInfoFromNativeWindow(gdk_window, results);
 }