Enable touch based selection and editing for webpages behind a flag.

content/browser/renderer_host/render_widget_host_view_aura.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_aura.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
@@ skipping 611 matching lines @@
       popup_child_host_view_(NULL),
       is_loading_(false),
       text_input_type_(ui::TEXT_INPUT_TYPE_NONE),
       can_compose_inline_(true),
       has_composition_text_(false),
       paint_canvas_(NULL),
       synthetic_move_sent_(false),
       accelerated_compositing_state_changed_(false),
       can_lock_compositor_(YES),
       paint_observer_(NULL),
-      accessible_parent_(NULL) {
+      accessible_parent_(NULL),
+      touch_editing_client_(NULL) {
   host_->SetView(this);
   window_observer_.reset(new WindowObserver(this));
   aura::client::SetTooltipText(window_, &tooltip_);
   aura::client::SetActivationDelegate(window_, this);
   aura::client::SetActivationChangeObserver(window_, this);
   aura::client::SetFocusChangeObserver(window_, this);
   gfx::Screen::GetScreenFor(window_)->AddObserver(this);
 #if defined(OS_WIN)
   transient_observer_.reset(new TransientWindowObserver(this));
 #endif
@@ skipping 141 matching lines @@
       if (can_lock_compositor_ == YES)
         can_lock_compositor_ = YES_DID_LOCK;
 
       resize_locks_.push_back(make_linked_ptr(
           new ResizeLock(root_window, rect.size(), defer_compositor_lock)));
 #endif
     }
   }
   window_->SetBounds(rect);
   host_->WasResized();
+  if (touch_editing_client_) {
+    touch_editing_client_->OnSelectionOrCursorChanged(selection_anchor_rect_,
+        selection_focus_rect_);
+  }
 }
 
 gfx::NativeView RenderWidgetHostViewAura::GetNativeView() const {
   return window_;
 }
 
 gfx::NativeViewId RenderWidgetHostViewAura::GetNativeViewId() const {
 #if defined(OS_WIN)
   aura::RootWindow* root_window = window_->GetRootWindow();
   if (root_window) {
@@ skipping 185 matching lines @@
 }
 
 void RenderWidgetHostViewAura::TextInputStateChanged(
     const ViewHostMsg_TextInputState_Params& params) {
   if (text_input_type_ != params.type ||
       can_compose_inline_ != params.can_compose_inline) {
     text_input_type_ = params.type;
     can_compose_inline_ = params.can_compose_inline;
     if (GetInputMethod())
       GetInputMethod()->OnTextInputTypeChanged(this);
+    if (touch_editing_client_)
+      touch_editing_client_->OnTextInputTypeChanged(text_input_type_);
   }
 }
 
 void RenderWidgetHostViewAura::ImeCancelComposition() {
   if (GetInputMethod())
     GetInputMethod()->CancelComposition(this);
   has_composition_text_ = false;
 }
 
 void RenderWidgetHostViewAura::ImeCompositionRangeChanged(
@@ skipping 95 matching lines @@
     const ViewHostMsg_SelectionBounds_Params& params) {
   if (selection_anchor_rect_ == params.anchor_rect &&
       selection_focus_rect_ == params.focus_rect)
     return;
 
   selection_anchor_rect_ = params.anchor_rect;
   selection_focus_rect_ = params.focus_rect;
 
   if (GetInputMethod())
     GetInputMethod()->OnCaretBoundsChanged(this);
+
+  if (touch_editing_client_) {
+    touch_editing_client_->OnSelectionOrCursorChanged(selection_anchor_rect_,
+        selection_focus_rect_);
+  }
 }
 
 void RenderWidgetHostViewAura::ScrollOffsetChanged() {
   aura::RootWindow* root = window_->GetRootWindow();
   if (!root)
     return;
   aura::client::CursorClient* cursor_client =
       aura::client::GetCursorClient(root);
   if (cursor_client && !cursor_client->IsCursorVisible())
     cursor_client->DisableMouseEvents();
@@ skipping 587 matching lines @@
 }
 
 void RenderWidgetHostViewAura::GetScreenInfo(WebScreenInfo* results) {
   GetScreenInfoForWindow(results, window_->GetRootWindow() ? window_ : NULL);
 }
 
 gfx::Rect RenderWidgetHostViewAura::GetBoundsInRootWindow() {
   return window_->GetToplevelWindow()->GetBoundsInScreen();
 }
 
+void RenderWidgetHostViewAura::GestureEventAck(int gesture_event_type) {
+  if (touch_editing_client_)
+    touch_editing_client_->GestureEventAck(gesture_event_type);
+}
+
 void RenderWidgetHostViewAura::ProcessAckedTouchEvent(
     const WebKit::WebTouchEvent& touch_event, InputEventAckState ack_result) {
   ScopedVector<ui::TouchEvent> events;
   if (!MakeUITouchEventsFromWebTouchEvents(touch_event, &events,
                                            SCREEN_COORDINATES))
     return;
 
   aura::RootWindow* root = window_->GetRootWindow();
   // |root| is NULL during tests.
   if (!root)
@@ skipping 321 matching lines @@
     const gfx::Point& location) {
   return true;
 }
 
 bool RenderWidgetHostViewAura::CanFocus() {
   return popup_type_ == WebKit::WebPopupTypeNone;
 }
 
 void RenderWidgetHostViewAura::OnCaptureLost() {
   host_->LostCapture();
+  if (touch_editing_client_)
+    touch_editing_client_->EndTouchEditing();
 }
 
 void RenderWidgetHostViewAura::OnPaint(gfx::Canvas* canvas) {
   bool is_compositing_active = host_->is_accelerated_compositing_active();
   bool has_backing_store = !!host_->GetBackingStore(false);
   if (is_compositing_active && current_dib_) {
     const gfx::Size window_size = window_->bounds().size();
     const gfx::Size& frame_size = last_swapped_surface_size_;
 
     SkBitmap bitmap;
@@ skipping 99 matching lines @@
   return scoped_refptr<ui::Texture>(
       factory->CreateOwnedTexture(
           current_surface_->size(), current_device_scale_factor_, texture_id));
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // RenderWidgetHostViewAura, ui::EventHandler implementation:
 
 void RenderWidgetHostViewAura::OnKeyEvent(ui::KeyEvent* event) {
   TRACE_EVENT0("browser", "RenderWidgetHostViewAura::OnKeyEvent");
+  if (touch_editing_client_ && touch_editing_client_->HandleInputEvent(event))
+    return;
+
   if (popup_child_host_view_ && popup_child_host_view_->NeedsInputGrab()) {
     popup_child_host_view_->OnKeyEvent(event);
     if (event->handled())
       return;
   }
 
   // We need to handle the Escape key for Pepper Flash.
   if (is_fullscreen_ && event->key_code() == ui::VKEY_ESCAPE) {
     // Focus the window we were created from.
     if (host_tracker_.get() && !host_tracker_->windows().empty()) {
@@ skipping 29 matching lines @@
       NativeWebKeyboardEvent webkit_event(event);
       host_->ForwardKeyboardEvent(webkit_event);
     }
   }
   event->SetHandled();
 }
 
 void RenderWidgetHostViewAura::OnMouseEvent(ui::MouseEvent* event) {
   TRACE_EVENT0("browser", "RenderWidgetHostViewAura::OnMouseEvent");
 
+  if (touch_editing_client_ && touch_editing_client_->HandleInputEvent(event))
+    return;
+
   if (mouse_locked_) {
     // Hide the cursor if someone else has shown it.
     aura::client::CursorClient* cursor_client =
         aura::client::GetCursorClient(window_->GetRootWindow());
     if (cursor_client && cursor_client->IsCursorVisible())
       cursor_client->DisableMouseEvents();
 
     WebKit::WebMouseEvent mouse_event = MakeWebMouseEvent(event);
     gfx::Point center(gfx::Rect(window_->bounds().size()).CenterPoint());
 
@@ skipping 84 matching lines @@
   if (!is_fullscreen_ && window_->parent()->delegate() &&
       !(event->flags() & ui::EF_FROM_TOUCH))
     window_->parent()->delegate()->OnMouseEvent(event);
 
   if (!IsXButtonUpEvent(event))
     event->SetHandled();
 }
 
 void RenderWidgetHostViewAura::OnScrollEvent(ui::ScrollEvent* event) {
   TRACE_EVENT0("browser", "RenderWidgetHostViewAura::OnScrollEvent");
+  if (touch_editing_client_ && touch_editing_client_->HandleInputEvent(event))
+    return;
+
   if (event->type() == ui::ET_SCROLL) {
     if (event->finger_count() != 2)
       return;
     WebKit::WebGestureEvent gesture_event =
         MakeWebGestureEventFlingCancel();
     host_->ForwardGestureEvent(gesture_event);
     WebKit::WebMouseWheelEvent mouse_wheel_event =
         MakeWebMouseWheelEvent(static_cast<ui::ScrollEvent*>(event));
     host_->ForwardWheelEvent(mouse_wheel_event);
     RecordAction(UserMetricsAction("TrackpadScroll"));
   } else if (event->type() == ui::ET_SCROLL_FLING_START ||
       event->type() == ui::ET_SCROLL_FLING_CANCEL) {
     WebKit::WebGestureEvent gesture_event =
         MakeWebGestureEvent(static_cast<ui::ScrollEvent*>(event));
     host_->ForwardGestureEvent(gesture_event);
     if (event->type() == ui::ET_SCROLL_FLING_START)
       RecordAction(UserMetricsAction("TrackpadScrollFling"));
   }
 
   event->SetHandled();
 }
 
 void RenderWidgetHostViewAura::OnTouchEvent(ui::TouchEvent* event) {
   TRACE_EVENT0("browser", "RenderWidgetHostViewAura::OnTouchEvent");
+  if (touch_editing_client_ && touch_editing_client_->HandleInputEvent(event))
+    return;
+
   // Update the touch event first.
   WebKit::WebTouchPoint* point = UpdateWebTouchEventFromUIEvent(*event,
                                                                 &touch_event_);
 
   // Forward the touch event only if a touch point was updated, and there's a
   // touch-event handler in the page, and no other touch-event is in the queue.
   // It is important to always consume the event if there is a touch-event
   // handler in the page, or some touch-event is already in the queue, even if
   // no point has been updated, to make sure that this event does not get
   // processed by the gesture recognizer before the events in the queue.
@@ skipping 10 matching lines @@
 void RenderWidgetHostViewAura::OnGestureEvent(ui::GestureEvent* event) {
   TRACE_EVENT0("browser", "RenderWidgetHostViewAura::OnGestureEvent");
   // Pinch gestures are currently disabled by default. See crbug.com/128477.
   if ((event->type() == ui::ET_GESTURE_PINCH_BEGIN ||
       event->type() == ui::ET_GESTURE_PINCH_UPDATE ||
       event->type() == ui::ET_GESTURE_PINCH_END) && !ShouldSendPinchGesture()) {
     event->SetHandled();
     return;
   }
 
+  if (touch_editing_client_ && touch_editing_client_->HandleInputEvent(event))
+    return;
+
   RenderViewHostDelegate* delegate = NULL;
   if (popup_type_ == WebKit::WebPopupTypeNone && !is_fullscreen_)
     delegate = RenderViewHost::From(host_)->GetDelegate();
 
   if (delegate && event->type() == ui::ET_GESTURE_BEGIN &&
       event->details().touch_points() == 1) {
     delegate->HandleGestureBegin();
   }
 
   WebKit::WebGestureEvent gesture = MakeWebGestureEvent(event);
@@ skipping 97 matching lines @@
     // window if we lose the focus to a window on another display.
     gfx::Screen* screen = gfx::Screen::GetScreenFor(window_);
     bool focusing_other_display =
         gained_focus && screen->GetNumDisplays() > 1 &&
         (screen->GetDisplayNearestWindow(window_).id() !=
          screen->GetDisplayNearestWindow(gained_focus).id());
     if (is_fullscreen_ && !in_shutdown_ && !focusing_other_display) {
       in_shutdown_ = true;
       host_->Shutdown();
     }
+    if (touch_editing_client_)
+      touch_editing_client_->EndTouchEditing();
   }
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // RenderWidgetHostViewAura, aura::RootWindowObserver implementation:
 
 void RenderWidgetHostViewAura::OnRootWindowMoved(const aura::RootWindow* root,
                                                  const gfx::Point& new_origin) {
   UpdateScreenInfo(window_);
 }
@@ skipping 118 matching lines @@
   host_->CompositingSurfaceUpdated();
   host_->ScheduleComposite();
 }
 
 ////////////////////////////////////////////////////////////////////////////////
 // RenderWidgetHostViewAura, private:
 
 RenderWidgetHostViewAura::~RenderWidgetHostViewAura() {
   if (paint_observer_)
     paint_observer_->OnViewDestroyed();
+  if (touch_editing_client_)
+    touch_editing_client_->OnViewDestroyed();
   if (!shared_surface_handle_.is_null()) {
     ImageTransportFactory* factory = ImageTransportFactory::GetInstance();
     factory->DestroySharedSurfaceHandle(shared_surface_handle_);
     factory->RemoveObserver(this);
   }
   window_observer_.reset();
 #if defined(OS_WIN)
   transient_observer_.reset();
 #endif
   if (window_->GetRootWindow())
@@ skipping 192 matching lines @@
     RenderWidgetHost* widget) {
   return new RenderWidgetHostViewAura(widget);
 }
 
 // static
 void RenderWidgetHostViewPort::GetDefaultScreenInfo(WebScreenInfo* results) {
   GetScreenInfoForWindow(results, NULL);
 }
 
 }  // namespace content