Let ImeAdapterAndroid have the same lifecycle as its Java peer

content/browser/renderer_host/render_widget_host_view_android.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_android.h"
 
 #include <android/bitmap.h>
 
 #include <utility>
 
@@ skipping 35 matching lines @@
 #include "content/browser/compositor/surface_utils.h"
 #include "content/browser/devtools/render_frame_devtools_agent_host.h"
 #include "content/browser/gpu/browser_gpu_channel_host_factory.h"
 #include "content/browser/gpu/compositor_util.h"
 #include "content/browser/gpu/gpu_data_manager_impl.h"
 #include "content/browser/gpu/gpu_process_host.h"
 #include "content/browser/media/android/media_web_contents_observer_android.h"
 #include "content/browser/renderer_host/compositor_impl_android.h"
 #include "content/browser/renderer_host/dip_util.h"
 #include "content/browser/renderer_host/frame_metadata_util.h"
+#include "content/browser/renderer_host/ime_adapter_android.h"
 #include "content/browser/renderer_host/input/input_router_impl.h"
 #include "content/browser/renderer_host/input/synthetic_gesture_target_android.h"
 #include "content/browser/renderer_host/input/web_input_event_builders_android.h"
 #include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/renderer_host/render_view_host_delegate_view.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_input_event_router.h"
 #include "content/common/gpu_host_messages.h"
 #include "content/common/input_messages.h"
@@ skipping 376 matching lines @@
     RenderWidgetHostImpl* widget_host,
     ContentViewCoreImpl* content_view_core)
     : host_(widget_host),
       begin_frame_source_(nullptr),
       outstanding_begin_frame_requests_(0),
       is_showing_(!widget_host->is_hidden()),
       is_window_visible_(true),
       is_window_activity_started_(true),
       is_in_vr_(false),
       content_view_core_(nullptr),
-      ime_adapter_android_(this),
+      ime_adapter_android_(nullptr),
       cached_background_color_(SK_ColorWHITE),
       view_(this),
       last_compositor_frame_sink_id_(kUndefinedCompositorFrameSinkId),
       gesture_provider_(ui::GetGestureProviderConfig(
                             ui::GestureProviderConfigType::CURRENT_PLATFORM),
                         this),
       stylus_text_selector_(this),
       using_browser_compositor_(CompositorImpl::IsInitialized()),
       synchronous_compositor_client_(nullptr),
       frame_evictor_(new DelegatedFrameEvictor(this)),
@@ skipping 26 matching lines @@
   CreateOverscrollControllerIfPossible();
 
   if (GetTextInputManager())
     GetTextInputManager()->AddObserver(this);
 }
 
 RenderWidgetHostViewAndroid::~RenderWidgetHostViewAndroid() {
   if (content_view_core_)
     content_view_core_->RemoveObserver(this);
   SetContentViewCore(NULL);
+  ime_adapter_android_ = nullptr;
   DCHECK(ack_callbacks_.empty());
   DCHECK(!delegated_frame_host_);
 }
 
 void RenderWidgetHostViewAndroid::Blur() {
   host_->Blur();
   if (overscroll_controller_)
     overscroll_controller_->Disable();
 }
 
@@ skipping 187 matching lines @@
 
 void RenderWidgetHostViewAndroid::UpdateCursor(const WebCursor& cursor) {
   // There are no cursors on Android.
 }
 
 void RenderWidgetHostViewAndroid::SetIsLoading(bool is_loading) {
   // Do nothing. The UI notification is handled through ContentViewClient which
   // is TabContentsDelegate.
 }
 
-long RenderWidgetHostViewAndroid::GetNativeImeAdapter() {
-  return reinterpret_cast<intptr_t>(&ime_adapter_android_);
+void RenderWidgetHostViewAndroid::ConnectImeAdapter(
+    ImeAdapterAndroid* ime_adapter) {
+  ime_adapter_android_ = ime_adapter;
+  if (ime_adapter)
+    ime_adapter->SetRenderWidgetHostViewAndroid(weak_ptr_factory_.GetWeakPtr());
 }
 
 // -----------------------------------------------------------------------------
 // TextInputManager::Observer implementations.
 void RenderWidgetHostViewAndroid::OnUpdateTextInputStateCalled(
     TextInputManager* text_input_manager,
     RenderWidgetHostViewBase* updated_view,
     bool did_change_state) {
   DCHECK_EQ(text_input_manager_, text_input_manager);
   // If there are no active widgets, the TextInputState.type should be reported
   // as none.
   const TextInputState& state =
       GetTextInputManager()->GetActiveWidget()
           ? *GetTextInputManager()->GetTextInputState()
           : TextInputState();
 
   if (!content_view_core_ || is_in_vr_)
     return;
 
   content_view_core_->UpdateImeAdapter(
-      GetNativeImeAdapter(), static_cast<int>(state.type), state.flags,
-      state.mode, state.value, state.selection_start, state.selection_end,
-      state.composition_start, state.composition_end, state.show_ime_if_needed,
-      state.reply_to_request);
+      static_cast<int>(state.type), state.flags, state.mode, state.value,
+      state.selection_start, state.selection_end, state.composition_start,
+      state.composition_end, state.show_ime_if_needed, state.reply_to_request);
 }
 
 void RenderWidgetHostViewAndroid::OnImeCompositionRangeChanged(
     TextInputManager* text_input_manager,
     RenderWidgetHostViewBase* updated_view) {
   DCHECK_EQ(text_input_manager_, text_input_manager);
   const TextInputManager::CompositionRangeInfo* info =
       text_input_manager_->GetCompositionRangeInfo();
   if (!info)
     return;
 
   std::vector<gfx::RectF> character_bounds;
   for (const gfx::Rect& rect : info->character_bounds)
     character_bounds.emplace_back(rect);
 
-  ime_adapter_android_.SetCharacterBounds(character_bounds);
+  DCHECK(ime_adapter_android_);

[boliu, 2017/03/24 17:13:16]

what makes these DCHECKs hold?

[Jinsuk Kim, 2017/03/27 03:19:33]

It should always be set by the time any Ime calls come in here. In fact I don't
think I need DCHECK at all. Removed.

[boliu, 2017/03/27 17:18:12]

The is not answering my question.

In the pop up flow where RWHVA is created before CVC/WC, so it's not clear to me
this will hold in that case.

[Jinsuk Kim, 2017/03/27 22:38:19]

Hm, haven't checked such case. It would have been checked at java-native
boundary before this CL. Then I think it is safe to add the null checking here
to the same effect.

+  ime_adapter_android_->SetCharacterBounds(character_bounds);
 }
 
 void RenderWidgetHostViewAndroid::OnImeCancelComposition(
     TextInputManager* text_input_manager,
     RenderWidgetHostViewBase* updated_view) {
   DCHECK_EQ(text_input_manager_, text_input_manager);
-  ime_adapter_android_.CancelComposition();
+  DCHECK(ime_adapter_android_);
+  ime_adapter_android_->CancelComposition();
 }
 
 void RenderWidgetHostViewAndroid::OnTextSelectionChanged(
     TextInputManager* text_input_manager,
     RenderWidgetHostViewBase* updated_view) {
   DCHECK_EQ(text_input_manager_, text_input_manager);
 
   // TODO(asimjour): remove the flag and fix text selection popup for
   // virtual reality mode.
   if (is_in_vr_)
@@ skipping 232 matching lines @@
 }
 
 void RenderWidgetHostViewAndroid::SetMultiTouchZoomSupportEnabled(
     bool enabled) {
   gesture_provider_.SetMultiTouchZoomSupportEnabled(enabled);
 }
 
 void RenderWidgetHostViewAndroid::FocusedNodeChanged(
     bool is_editable_node,
     const gfx::Rect& node_bounds_in_screen) {
-  ime_adapter_android_.FocusedNodeChanged(is_editable_node);
+  DCHECK(ime_adapter_android_);
+  ime_adapter_android_->FocusedNodeChanged(is_editable_node);
 }
 
 void RenderWidgetHostViewAndroid::RenderProcessGone(
     base::TerminationStatus status, int error_code) {
   Destroy();
 }
 
 void RenderWidgetHostViewAndroid::Destroy() {
   host_->ViewDestroyed();
   SetContentViewCore(NULL);
@@ skipping 847 matching lines @@
       view_.RemoveFromParent();
       view_.GetLayer()->RemoveFromParent();
     }
     if (content_view_core) {
       content_view_core->AddObserver(this);
       ui::ViewAndroid* parent_view = content_view_core->GetViewAndroid();
       parent_view->AddChild(&view_);
       parent_view->GetLayer()->AddChild(view_.GetLayer());
     }
     content_view_core_ = content_view_core;
+    ConnectImeAdapter(content_view_core ? content_view_core->ime_adapter()

[boliu, 2017/03/24 17:13:16]

is this call still needed? if so, can we move this somewhere to where the rest
of ConnectImeAdapter calls are?

[Jinsuk Kim, 2017/03/27 03:19:33]

Not necessary any more as IAA is now observing web contents directly. Removed.

+                                        : nullptr);
   }
 
   BrowserAccessibilityManager* manager = NULL;
   if (host_)
     manager = host_->GetRootBrowserAccessibilityManager();
   if (manager) {
     base::android::ScopedJavaLocalRef<jobject> obj;
     if (content_view_core_)
       obj = content_view_core_->GetJavaObject();
     manager->ToBrowserAccessibilityManagerAndroid()->SetContentViewCore(obj);
@@ skipping 255 matching lines @@
 
   ui::WindowAndroidCompositor* compositor = window_android->GetCompositor();
   if (!compositor)
     return;
 
   overscroll_controller_ = base::MakeUnique<OverscrollControllerAndroid>(
       overscroll_refresh_handler, compositor, view_.GetDipScale());
 }
 
 }  // namespace content