Test for Pepper IME events.

This patch adds a way to simulate IME composition events
inside the renderer process, and tests that IME events are
properly passed between the renderer and plugins.

ppapi/tests/test_ime_input_event.cc:
is the actual test case

ppapi/{api,c,cpp}/dev/*ime_input_event_dev*:
implements an API to create IME events from plugins for testing.

other files:
wire necessary stuff for simulating IME events.
Since Pepper IME events are not delivered through WebKit/DOM layer
but rather directly sent from renderer to plugins,
the simulation part also follows the similar code path.

BUG=126714
TEST=browser_tests PPAPITest.ImeInputEvent

Review URL: https://chromiumcodereview.appspot.com/10391101

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@138080 0039d316-1c4b-4281-b951-d872f2087c98

7 files changed, 113 insertions, 48 deletions

diff --git a/webkit/plugins/ppapi/mock_plugin_delegate.cc b/webkit/plugins/ppapi/mock_plugin_delegate.cc
index 971754c..7c7329f 100644
--- a/webkit/plugins/ppapi/mock_plugin_delegate.cc
+++ b/webkit/plugins/ppapi/mock_plugin_delegate.cc
@@ -37,6 +37,16 @@ void MockPluginDelegate::PluginRequestedCancelComposition(
 void MockPluginDelegate::PluginSelectionChanged(PluginInstance* instance) {
 }
 
+void MockPluginDelegate::SimulateImeSetComposition(
+    const string16& text,
+    const std::vector<WebKit::WebCompositionUnderline>& underlines,
+    int selection_start,
+    int selection_end) {
+}
+
+void MockPluginDelegate::SimulateImeConfirmComposition(const string16& text) {
+}
+
 void MockPluginDelegate::PluginCrashed(PluginInstance* instance) {
 }
 
diff --git a/webkit/plugins/ppapi/mock_plugin_delegate.h b/webkit/plugins/ppapi/mock_plugin_delegate.h
index 91c62e0..3136847 100644
--- a/webkit/plugins/ppapi/mock_plugin_delegate.h
+++ b/webkit/plugins/ppapi/mock_plugin_delegate.h
@@ -24,6 +24,12 @@ class MockPluginDelegate : public PluginDelegate {
   virtual void PluginCaretPositionChanged(PluginInstance* instance);
   virtual void PluginRequestedCancelComposition(PluginInstance* instance);
   virtual void PluginSelectionChanged(PluginInstance* instance);
+  virtual void SimulateImeSetComposition(
+      const string16& text,
+      const std::vector<WebKit::WebCompositionUnderline>& underlines,
+      int selection_start,
+      int selection_end);
+  virtual void SimulateImeConfirmComposition(const string16& text);
   virtual void PluginCrashed(PluginInstance* instance);
   virtual void InstanceCreated(PluginInstance* instance);
   virtual void InstanceDeleted(PluginInstance* instance);
diff --git a/webkit/plugins/ppapi/plugin_delegate.h b/webkit/plugins/ppapi/plugin_delegate.h
index 304cb09..9229143 100644
--- a/webkit/plugins/ppapi/plugin_delegate.h
+++ b/webkit/plugins/ppapi/plugin_delegate.h
@@ -70,6 +70,7 @@ namespace WebKit {
 class WebFileChooserCompletion;
 class WebGamepads;
 class WebPlugin;
+struct WebCompositionUnderline;
 struct WebCursorInfo;
 struct WebFileChooserParams;
 }
@@ -316,6 +317,13 @@ class PluginDelegate {
   // Notification that the text selection in the given plugin is changed.
   virtual void PluginSelectionChanged(
       webkit::ppapi::PluginInstance* instance) = 0;
+  // Requests simulating IME events for testing purpose.
+  virtual void SimulateImeSetComposition(
+      const string16& text,
+      const std::vector<WebKit::WebCompositionUnderline>& underlines,
+      int selection_start,
+      int selection_end) = 0;
+  virtual void SimulateImeConfirmComposition(const string16& text) = 0;
 
   // Notification that the given plugin has crashed. When a plugin crashes, all
   // instances associated with that plugin will notify that they've crashed via
diff --git a/webkit/plugins/ppapi/ppapi_plugin_instance.cc b/webkit/plugins/ppapi/ppapi_plugin_instance.cc
index 390f8dc..429dd03 100644
--- a/webkit/plugins/ppapi/ppapi_plugin_instance.cc
+++ b/webkit/plugins/ppapi/ppapi_plugin_instance.cc
@@ -1611,6 +1611,10 @@ void PluginInstance::SimulateInputEvent(const InputEventData& input_event) {
     return;
   }
 
+  bool handled = SimulateIMEEvent(input_event);
+  if (handled)
+    return;
+
   std::vector<linked_ptr<WebInputEvent> > events =
       CreateSimulatedWebInputEvents(
           input_event,
@@ -1622,6 +1626,52 @@ void PluginInstance::SimulateInputEvent(const InputEventData& input_event) {
   }
 }
 
+bool PluginInstance::SimulateIMEEvent(const InputEventData& input_event) {
+  switch (input_event.event_type) {
+    case PP_INPUTEVENT_TYPE_IME_COMPOSITION_START:
+    case PP_INPUTEVENT_TYPE_IME_COMPOSITION_UPDATE:
+      SimulateImeSetCompositionEvent(input_event);
+      break;
+    case PP_INPUTEVENT_TYPE_IME_COMPOSITION_END:
+      DCHECK(input_event.character_text.empty());
+      SimulateImeSetCompositionEvent(input_event);
+      break;
+    case PP_INPUTEVENT_TYPE_IME_TEXT:
+      delegate()->SimulateImeConfirmComposition(
+          UTF8ToUTF16(input_event.character_text));
+      break;
+    default:
+      return false;
+  }
+  return true;
+}
+
+void PluginInstance::SimulateImeSetCompositionEvent(
+    const InputEventData& input_event) {
+  std::vector<size_t> offsets;
+  offsets.push_back(input_event.composition_selection_start);
+  offsets.push_back(input_event.composition_selection_end);
+  offsets.insert(offsets.end(),
+                 input_event.composition_segment_offsets.begin(),
+                 input_event.composition_segment_offsets.end());
+
+  string16 utf16_text =
+      UTF8ToUTF16AndAdjustOffsets(input_event.character_text, &offsets);
+
+  std::vector<WebKit::WebCompositionUnderline> underlines;
+  for (size_t i = 2; i + 1 < offsets.size(); ++i) {
+    WebKit::WebCompositionUnderline underline;
+    underline.startOffset = offsets[i];
+    underline.endOffset = offsets[i + 1];
+    if (input_event.composition_target_segment == static_cast<int32_t>(i - 2))
+      underline.thick = true;
+    underlines.push_back(underline);
+  }
+
+  delegate()->SimulateImeSetComposition(
+      utf16_text, underlines, offsets[0], offsets[1]);
+}
+
 void PluginInstance::ClosePendingUserGesture(PP_Instance instance,
                                              PP_TimeTicks timestamp) {
   // Close the pending user gesture if the plugin had a chance to respond.
diff --git a/webkit/plugins/ppapi/ppapi_plugin_instance.h b/webkit/plugins/ppapi/ppapi_plugin_instance.h
index 63b742f..ffd184b 100644
--- a/webkit/plugins/ppapi/ppapi_plugin_instance.h
+++ b/webkit/plugins/ppapi/ppapi_plugin_instance.h
@@ -326,6 +326,12 @@ class WEBKIT_PLUGINS_EXPORT PluginInstance :
   // which sends it back up to the plugin as if it came from the user.
   void SimulateInputEvent(const ::ppapi::InputEventData& input_event);
 
+  // Simulates an IME event at the level of RenderView which sends it back up to
+  // the plugin as if it came from the user.
+  bool SimulateIMEEvent(const ::ppapi::InputEventData& input_event);
+  void SimulateImeSetCompositionEvent(
+      const ::ppapi::InputEventData& input_event);
+
   // PPB_Instance_API implementation.
   virtual PP_Bool BindGraphics(PP_Instance instance,
                                PP_Resource device) OVERRIDE;
diff --git a/webkit/plugins/ppapi/resource_creation_impl.cc b/webkit/plugins/ppapi/resource_creation_impl.cc
index 17ef13b..077e247 100644
--- a/webkit/plugins/ppapi/resource_creation_impl.cc
+++ b/webkit/plugins/ppapi/resource_creation_impl.cc
@@ -182,6 +182,21 @@ PP_Resource ResourceCreationImpl::CreateImageData(PP_Instance instance,
   return PPB_ImageData_Impl::Create(instance, format, size, init_to_zero);
 }
 
+PP_Resource ResourceCreationImpl::CreateIMEInputEvent(
+    PP_Instance instance,
+    PP_InputEvent_Type type,
+    PP_TimeTicks time_stamp,
+    struct PP_Var text,
+    uint32_t segment_number,
+    const uint32_t* segment_offsets,
+    int32_t target_segment,
+    uint32_t selection_start,
+    uint32_t selection_end) {
+  return PPB_InputEvent_Shared::CreateIMEInputEvent(
+      ::ppapi::OBJECT_IS_IMPL, instance, type, time_stamp, text, segment_number,
+      segment_offsets, target_segment, selection_start, selection_end);
+}
+
 PP_Resource ResourceCreationImpl::CreateKeyboardInputEvent(
     PP_Instance instance,
     PP_InputEvent_Type type,
@@ -189,26 +204,9 @@ PP_Resource ResourceCreationImpl::CreateKeyboardInputEvent(
     uint32_t modifiers,
     uint32_t key_code,
     struct PP_Var character_text) {
-  if (type != PP_INPUTEVENT_TYPE_RAWKEYDOWN &&
-      type != PP_INPUTEVENT_TYPE_KEYDOWN &&
-      type != PP_INPUTEVENT_TYPE_KEYUP &&
-      type != PP_INPUTEVENT_TYPE_CHAR)
-    return 0;
-
-  InputEventData data;
-  data.event_type = type;
-  data.event_time_stamp = time_stamp;
-  data.event_modifiers = modifiers;
-  data.key_code = key_code;
-  if (character_text.type == PP_VARTYPE_STRING) {
-    StringVar* string_var = StringVar::FromPPVar(character_text);
-    if (!string_var)
-      return 0;
-    data.character_text = string_var->value();
-  }
-
-  return (new PPB_InputEvent_Shared(::ppapi::OBJECT_IS_IMPL,
-                                    instance, data))->GetReference();
+  return PPB_InputEvent_Shared::CreateKeyboardInputEvent(
+      ::ppapi::OBJECT_IS_IMPL, instance, type, time_stamp, modifiers, key_code,
+      character_text);
 }
 
 PP_Resource ResourceCreationImpl::CreateMouseInputEvent(
@@ -220,24 +218,9 @@ PP_Resource ResourceCreationImpl::CreateMouseInputEvent(
     const PP_Point* mouse_position,
     int32_t click_count,
     const PP_Point* mouse_movement) {
-  if (type != PP_INPUTEVENT_TYPE_MOUSEDOWN &&
-      type != PP_INPUTEVENT_TYPE_MOUSEUP &&
-      type != PP_INPUTEVENT_TYPE_MOUSEMOVE &&
-      type != PP_INPUTEVENT_TYPE_MOUSEENTER &&
-      type != PP_INPUTEVENT_TYPE_MOUSELEAVE)
-    return 0;
-
-  InputEventData data;
-  data.event_type = type;
-  data.event_time_stamp = time_stamp;
-  data.event_modifiers = modifiers;
-  data.mouse_button = mouse_button;
-  data.mouse_position = *mouse_position;
-  data.mouse_click_count = click_count;
-  data.mouse_movement = *mouse_movement;
-
-  return (new PPB_InputEvent_Shared(::ppapi::OBJECT_IS_IMPL,
-                                    instance, data))->GetReference();
+  return PPB_InputEvent_Shared::CreateMouseInputEvent(
+      ::ppapi::OBJECT_IS_IMPL, instance, type, time_stamp, modifiers,
+      mouse_button, mouse_position, click_count, mouse_movement);
 }
 
 PP_Resource ResourceCreationImpl::CreateNetworkMonitor(
@@ -330,16 +313,9 @@ PP_Resource ResourceCreationImpl::CreateWheelInputEvent(
     const PP_FloatPoint* wheel_delta,
     const PP_FloatPoint* wheel_ticks,
     PP_Bool scroll_by_page) {
-  InputEventData data;
-  data.event_type = PP_INPUTEVENT_TYPE_WHEEL;
-  data.event_time_stamp = time_stamp;
-  data.event_modifiers = modifiers;
-  data.wheel_delta = *wheel_delta;
-  data.wheel_ticks = *wheel_ticks;
-  data.wheel_scroll_by_page = PP_ToBool(scroll_by_page);
-
-  return (new PPB_InputEvent_Shared(::ppapi::OBJECT_IS_IMPL,
-                                    instance, data))->GetReference();
+  return PPB_InputEvent_Shared::CreateWheelInputEvent(
+      ::ppapi::OBJECT_IS_IMPL, instance, time_stamp, modifiers,
+      wheel_delta, wheel_ticks, scroll_by_page);
 }
 
 PP_Resource ResourceCreationImpl::CreateX509CertificatePrivate(
diff --git a/webkit/plugins/ppapi/resource_creation_impl.h b/webkit/plugins/ppapi/resource_creation_impl.h
index 44dae8e..ca8bb54 100644
--- a/webkit/plugins/ppapi/resource_creation_impl.h
+++ b/webkit/plugins/ppapi/resource_creation_impl.h
@@ -67,6 +67,15 @@ class ResourceCreationImpl : public ::ppapi::thunk::ResourceCreationAPI {
                                       PP_ImageDataFormat format,
                                       const PP_Size& size,
                                       PP_Bool init_to_zero) OVERRIDE;
+  virtual PP_Resource CreateIMEInputEvent(PP_Instance instance,
+                                          PP_InputEvent_Type type,
+                                          PP_TimeTicks time_stamp,
+                                          struct PP_Var text,
+                                          uint32_t segment_number,
+                                          const uint32_t* segment_offsets,
+                                          int32_t target_segment,
+                                          uint32_t selection_start,
+                                          uint32_t selection_end) OVERRIDE;
   virtual PP_Resource CreateKeyboardInputEvent(
       PP_Instance instance,
       PP_InputEvent_Type type,