Upstream Android IME support (ImeAdapter).

content/browser/renderer_host/ime_adapter_android.cc

Index: content/browser/renderer_host/ime_adapter_android.cc
diff --git a/content/browser/renderer_host/ime_adapter_android.cc b/content/browser/renderer_host/ime_adapter_android.cc
index a848dccf91a6f9b73b897f27976c42bd59da709f..c8bb0e3f2d11e5d163915b3ed35495902bd38a23 100644
--- a/content/browser/renderer_host/ime_adapter_android.cc
+++ b/content/browser/renderer_host/ime_adapter_android.cc
@@ -4,12 +4,52 @@
 
 #include "content/browser/renderer_host/ime_adapter_android.h"
 
+#include <android/input.h>
+
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
+#include "base/time.h"
+#include "base/utf_string_conversions.h"
 #include "content/browser/renderer_host/render_widget_host_impl.h"
 #include "content/browser/renderer_host/render_widget_host_view_android.h"
 #include "content/common/view_messages.h"
+#include "content/public/browser/native_web_keyboard_event.h"
 #include "jni/ImeAdapter_jni.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebCompositionUnderline.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
+
+using base::android::AttachCurrentThread;
+using base::android::ConvertJavaStringToUTF16;
+using content::NativeWebKeyboardEvent;
+using content::RenderWidgetHostImpl;
+
+namespace {
+
+// Maps a java KeyEvent into a NativeWebKeyboardEvent.
+// |java_key_event| is used to maintain a globalref for KeyEvent.
+// |action| will help determine the WebInputEvent type.
+// type, |modifiers|, |time_ms|, |key_code|, |unicode_char| is used to create
+// WebKeyboardEvent. |key_code| is also needed ad need to treat the enter key
+// as a key press of character \r.
+NativeWebKeyboardEvent NativeWebKeyboardEventFromKeyEvent(
+    JNIEnv* env,
+    jobject java_key_event,
+    int action,
+    int modifiers,
+    long time_ms,
+    int key_code,
+    bool is_system_key,
+    int unicode_char) {
+  WebKit::WebInputEvent::Type type = WebKit::WebInputEvent::Undefined;
+  if (action == AKEY_EVENT_ACTION_DOWN)
+    type = WebKit::WebInputEvent::RawKeyDown;
+  else if (action == AKEY_EVENT_ACTION_UP)
+    type = WebKit::WebInputEvent::KeyUp;
+  return NativeWebKeyboardEvent(java_key_event, type, modifiers,
+      time_ms, key_code, unicode_char, is_system_key);
+}
+
+}  // anonymous namespace
 
 namespace content {
 
@@ -17,6 +57,33 @@ bool RegisterImeAdapter(JNIEnv* env) {
   if (!RegisterNativesImpl(env))
     return false;
 
+  Java_ImeAdapter_initializeWebInputEvents(env,
+                                           WebKit::WebInputEvent::RawKeyDown,
+                                           WebKit::WebInputEvent::KeyUp,
+                                           WebKit::WebInputEvent::Char,
+                                           WebKit::WebInputEvent::ShiftKey,
+                                           WebKit::WebInputEvent::AltKey,
+                                           WebKit::WebInputEvent::ControlKey,
+                                           WebKit::WebInputEvent::CapsLockOn,
+                                           WebKit::WebInputEvent::NumLockOn);
+  Java_ImeAdapter_initializeTextInputTypes(
+      env,
+      ui::TEXT_INPUT_TYPE_NONE,
+      ui::TEXT_INPUT_TYPE_TEXT,
+      ui::TEXT_INPUT_TYPE_TEXT_AREA,
+      ui::TEXT_INPUT_TYPE_PASSWORD,
+      ui::TEXT_INPUT_TYPE_SEARCH,
+      ui::TEXT_INPUT_TYPE_URL,
+      ui::TEXT_INPUT_TYPE_EMAIL,
+      ui::TEXT_INPUT_TYPE_TELEPHONE,
+      ui::TEXT_INPUT_TYPE_NUMBER,
+      ui::TEXT_INPUT_TYPE_DATE,
+      ui::TEXT_INPUT_TYPE_DATE_TIME,
+      ui::TEXT_INPUT_TYPE_DATE_TIME_LOCAL,
+      ui::TEXT_INPUT_TYPE_MONTH,
+      ui::TEXT_INPUT_TYPE_TIME,
+      ui::TEXT_INPUT_TYPE_WEEK,
+      ui::TEXT_INPUT_TYPE_CONTENT_EDITABLE);
   return true;
 }
 
@@ -33,6 +100,135 @@ ImeAdapterAndroid::~ImeAdapterAndroid() {
   }
 }
 
+bool ImeAdapterAndroid::SendSyntheticKeyEvent(JNIEnv*,
+                                              jobject,
+                                              int type,
+                                              long time_ms,
+                                              int key_code,
+                                              int text) {
+  NativeWebKeyboardEvent event(static_cast<WebKit::WebInputEvent::Type>(type),
+                               0 /* modifiers */, time_ms / 1000.0, key_code,
+                               text, false /* is_system_key */);
+  rwhva_->SendKeyEvent(event);
+  return true;
+}
+
+bool ImeAdapterAndroid::SendKeyEvent(JNIEnv* env, jobject,
+                                     jobject original_key_event,
+                                     int action, int modifiers,
+                                     long time_ms, int key_code,
+                                     bool is_system_key, int unicode_char) {
+  NativeWebKeyboardEvent event = NativeWebKeyboardEventFromKeyEvent(
+          env, original_key_event, action, modifiers,
+          time_ms, key_code, is_system_key, unicode_char);
+  rwhva_->SendKeyEvent(event);
+  if (event.type == WebKit::WebInputEvent::RawKeyDown && event.text[0]) {
+    // Send a Char event, but without an os_event since we don't want to
+    // roundtrip back to java such synthetic event.
+    NativeWebKeyboardEvent char_event(event);
+    char_event.os_event = NULL;
+    event.type = WebKit::WebInputEvent::Char;
+    rwhva_->SendKeyEvent(event);
+  }
+  return true;
+}
+
+void ImeAdapterAndroid::SetComposingText(JNIEnv* env, jobject, jstring text,
+                                         int new_cursor_pos) {
+  RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(
+      rwhva_->GetRenderWidgetHost());
+  if (!rwhi)
+    return;
+
+  string16 text16 = ConvertJavaStringToUTF16(env, text);
+  std::vector<WebKit::WebCompositionUnderline> underlines;
+  underlines.push_back(
+      WebKit::WebCompositionUnderline(0, text16.length(), SK_ColorBLACK,
+                                      false));
+  // new_cursor_position is as described in the Android API for
+  // InputConnection#setComposingText, whereas the parameters for
+  // ImeSetComposition are relative to the start of the composition.
+  if (new_cursor_pos > 0)
+    new_cursor_pos = text16.length() + new_cursor_pos - 1;
+
+  rwhi->ImeSetComposition(text16, underlines, new_cursor_pos, new_cursor_pos);
+}
+
+
+void ImeAdapterAndroid::CommitText(JNIEnv* env, jobject, jstring text) {
+  RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(
+      rwhva_->GetRenderWidgetHost());
+  if (!rwhi)
+    return;
+
+  string16 text16 = ConvertJavaStringToUTF16(env, text);
+  rwhi->ImeConfirmComposition(text16);
+}
+
+void ImeAdapterAndroid::AttachImeAdapter(JNIEnv* env, jobject java_object) {
+  java_ime_adapter_ = AttachCurrentThread()->NewGlobalRef(java_object);
+}
+
+void ImeAdapterAndroid::CancelComposition() {
+  Java_ImeAdapter_cancelComposition(AttachCurrentThread(), java_ime_adapter_);
+}
+
+void ImeAdapterAndroid::ReplaceText(JNIEnv* env, jobject, jstring text) {
+  RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(
+      rwhva_->GetRenderWidgetHost());
+  if (!rwhi)
+    return;
+
+  string16 text16 = ConvertJavaStringToUTF16(env, text);
+  rwhi->Send(new ViewMsg_ReplaceAll(rwhi->GetRoutingID(), text16));
+}
+
+void ImeAdapterAndroid::ClearFocus(JNIEnv* env, jobject) {
+  RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(
+      rwhva_->GetRenderWidgetHost());
+  if (!rwhi)
+    return;
+
+  rwhi->Send(new ViewMsg_ClearFocusedNode(rwhi->GetRoutingID()));
+}
+
+void ImeAdapterAndroid::SetEditableSelectionOffsets(JNIEnv*, jobject,
+                                                    int start, int end) {
+  RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(
+      rwhva_->GetRenderWidgetHost());
+  if (!rwhi)
+    return;
+
+  rwhi->Send(new ViewMsg_SetEditableSelectionOffsets(rwhi->GetRoutingID(),
+                                                     start, end));
+}
+
+void ImeAdapterAndroid::SetComposingRegion(JNIEnv*, jobject,
+                                           int start, int end) {
+  RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(
+      rwhva_->GetRenderWidgetHost());
+  if (!rwhi)
+    return;
+
+  std::vector<WebKit::WebCompositionUnderline> underlines;
+  underlines.push_back(
+      WebKit::WebCompositionUnderline(0, end - start, SK_ColorBLACK, false));
+
+  rwhi->Send(new ViewMsg_SetCompositionFromExistingText(
+      rwhi->GetRoutingID(), start, end, underlines));
+}
+
+void ImeAdapterAndroid::DeleteSurroundingText(JNIEnv*, jobject,
+                                              int before, int after) {
+  RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(
+      rwhva_->GetRenderWidgetHost());
+  if (!rwhi)
+    return;
+
+  rwhi->Send(new ViewMsg_ExtendSelectionAndDelete(rwhi->GetRoutingID(),
+                                                  before, after));
+}
+
 void ImeAdapterAndroid::Unselect(JNIEnv* env, jobject) {
   RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(
       rwhva_->GetRenderWidgetHost());
@@ -78,4 +274,4 @@ void ImeAdapterAndroid::Paste(JNIEnv* env, jobject) {
   rwhi->Send(new ViewMsg_Paste(rwhi->GetRoutingID()));
 }
 
-}  // namespace content
+}  // namespace content