[WIP] Add support for Android SuggestionSpans when editing text

content/browser/renderer_host/ime_adapter_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/ime_adapter_android.h"
 
 #include <algorithm>
 #include <android/input.h>
 #include <vector>
 
@@ skipping 12 matching lines @@
 #include "content/browser/renderer_host/render_widget_host_view_android.h"
 #include "content/common/input_messages.h"
 #include "content/common/view_messages.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/native_web_keyboard_event.h"
 #include "content/public/browser/web_contents.h"
 #include "jni/ImeAdapter_jni.h"
 #include "third_party/WebKit/public/platform/WebInputEvent.h"
 #include "third_party/WebKit/public/platform/WebTextInputType.h"
 #include "third_party/WebKit/public/web/WebCompositionUnderline.h"
+#include "third_party/WebKit/public/web/WebTextSuggestionInfo.h"

[rlanday, 2017/01/25 02:27:23]

One thing I'm curious about is that there's a lint rule complaining about me
adding an include from third_party/WebKit here (and in a couple other files as
well)...but clearly there are already three other WebKit includes here, so I'm
not sure what I'm supposed to do...

 
 using base::android::AttachCurrentThread;
 using base::android::ConvertJavaStringToUTF16;
+using base::android::ConvertUTF8ToJavaString;
+using base::android::GetClass;
+using base::android::MethodID;
 using base::android::JavaParamRef;
+using base::android::ScopedJavaLocalRef;
 
 namespace content {
 namespace {
 
 // Maps a java KeyEvent into a NativeWebKeyboardEvent.
 // |java_key_event| is used to maintain a globalref for KeyEvent.
 // |type| will 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.
@@ skipping 34 matching lines @@
       reinterpret_cast<std::vector<blink::WebCompositionUnderline>*>(
           underlines_ptr);
   underlines->push_back(
       blink::WebCompositionUnderline(static_cast<unsigned>(start),
                                      static_cast<unsigned>(end),
                                      SK_ColorTRANSPARENT,
                                      false,
                                      static_cast<unsigned>(background_color)));
 }
 
+// Callback from Java to convert SuggestionSpan data to a
+// blink::WebCompositionUnderline instance, and append it to |underlines_ptr|.
+void AppendSuggestionSpan(JNIEnv* env,
+                          const JavaParamRef<jclass>&,
+                          jlong underlines_ptr,
+                          jint start,
+                          jint end,
+                          jint underline_color,
+                          jint flags,
+                          const JavaParamRef<jobjectArray>& suggestions) {
+  DCHECK_GE(start, 0);
+  DCHECK_GE(end, 0);
+  std::vector<blink::WebCompositionUnderline>* underlines =
+      reinterpret_cast<std::vector<blink::WebCompositionUnderline>*>(
+          underlines_ptr);
+
+  std::vector<std::string> suggestions_vec;
+  AppendJavaStringArrayToStringVector(env, suggestions, &suggestions_vec);
+
+  underlines->push_back(blink::WebCompositionUnderline(
+      static_cast<unsigned>(start), static_cast<unsigned>(end),
+      static_cast<unsigned>(underline_color), true, SK_ColorTRANSPARENT,
+      suggestions_vec));
+}
+
 // Callback from Java to convert UnderlineSpan data to a
 // blink::WebCompositionUnderline instance, and append it to |underlines_ptr|.
 void AppendUnderlineSpan(JNIEnv*,
                          const JavaParamRef<jclass>&,
                          jlong underlines_ptr,
                          jint start,
                          jint end) {
   DCHECK_GE(start, 0);
   DCHECK_GE(end, 0);
   std::vector<blink::WebCompositionUnderline>* underlines =
@@ skipping 151 matching lines @@
     coordinates_array[coordinates_array_index + 0] = rect.x();
     coordinates_array[coordinates_array_index + 1] = rect.y();
     coordinates_array[coordinates_array_index + 2] = rect.right();
     coordinates_array[coordinates_array_index + 3] = rect.bottom();
   }
   Java_ImeAdapter_setCharacterBounds(
       env, obj, base::android::ToJavaFloatArray(env, coordinates_array.get(),
                                                 coordinates_array_size));
 }
 
+void ImeAdapterAndroid::ShowTextSuggestionMenu(
+    const std::vector<blink::WebTextSuggestionInfo>& suggestion_infos) {
+  JNIEnv* env = AttachCurrentThread();
+  ScopedJavaLocalRef<jobject> obj = java_ime_adapter_.get(env);
+
+  ScopedJavaLocalRef<jclass> clazz = GetClass(
+      env, "org/chromium/content/browser/input/ImeAdapter$SuggestionInfo");
+  jmethodID constructor = MethodID::Get<MethodID::TYPE_INSTANCE>(
+      env, clazz.obj(), "<init>",
+      "(Lorg/chromium/content/browser/input/ImeAdapter;IILjava/lang/"
+      "String;Ljava/lang/String;Ljava/lang/String;)V");
+  ScopedJavaLocalRef<jobjectArray> suggestion_infos_for_java(
+      env, env->NewObjectArray(suggestion_infos.size(), clazz.obj(), nullptr));
+
+  for (size_t i = 0; i < suggestion_infos.size(); i++) {
+    const blink::WebTextSuggestionInfo& suggestion_info = suggestion_infos[i];
+    ScopedJavaLocalRef<jobject> suggestion_info_for_java(
+        env,
+        env->NewObject(
+            clazz.obj(), constructor, obj.obj(),
+            suggestion_info.documentMarkerID, suggestion_info.suggestionIndex,
+            ConvertUTF8ToJavaString(env, suggestion_info.prefix).obj(),
+            ConvertUTF8ToJavaString(env, suggestion_info.suggestion).obj(),
+            ConvertUTF8ToJavaString(env, suggestion_info.suffix).obj()));
+    env->SetObjectArrayElement(suggestion_infos_for_java.obj(), i,
+                               suggestion_info_for_java.obj());
+  }
+
+  Java_ImeAdapter_showSuggestionMenu(env, obj, suggestion_infos_for_java.obj());
+}
+
 void ImeAdapterAndroid::SetComposingRegion(JNIEnv*,
                                            const JavaParamRef<jobject>&,
                                            int start,
                                            int end) {
   RenderFrameHost* rfh = GetFocusedFrame();
   if (!rfh)
     return;
 
   std::vector<blink::WebCompositionUnderline> underlines;
   underlines.push_back(blink::WebCompositionUnderline(
@@ skipping 28 matching lines @@
     const base::android::JavaParamRef<jobject>& obj,
     bool immediate_request,
     bool monitor_request) {
   RenderWidgetHostImpl* rwhi = GetRenderWidgetHostImpl();
   if (!rwhi)
     return;
   rwhi->Send(new InputMsg_RequestCompositionUpdate(
       rwhi->GetRoutingID(), immediate_request, monitor_request));
 }
 
+void ImeAdapterAndroid::ApplySuggestionReplacement(JNIEnv*,
+                                                   const JavaParamRef<jobject>&,
+                                                   int documentMarkerID,
+                                                   int suggestionIndex) {
+  RenderWidgetHostImpl* rwhi = GetRenderWidgetHostImpl();
+  if (!rwhi)
+    return;
+
+  rwhi->ImeApplySuggestionReplacement(documentMarkerID, suggestionIndex);
+}
+
+void ImeAdapterAndroid::DeleteSuggestionHighlight(
+    JNIEnv*,
+    const JavaParamRef<jobject>&) {
+  RenderWidgetHostImpl* rwhi = GetRenderWidgetHostImpl();
+  if (!rwhi)
+    return;
+
+  rwhi->ImeDeleteSuggestionHighlight();
+}
+
+void ImeAdapterAndroid::CloseSuggestionMenu(JNIEnv*,
+                                            const JavaParamRef<jobject>&) {
+  RenderWidgetHostImpl* rwhi = GetRenderWidgetHostImpl();
+  if (!rwhi)
+    return;
+
+  rwhi->ImeCloseSuggestionMenu();
+}
+
 void ImeAdapterAndroid::ResetImeAdapter(JNIEnv* env,
                                         const JavaParamRef<jobject>&) {
   java_ime_adapter_.reset();
 }
 
 RenderWidgetHostImpl* ImeAdapterAndroid::GetRenderWidgetHostImpl() {
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   DCHECK(rwhva_);
   RenderWidgetHost* rwh = rwhva_->GetRenderWidgetHost();
   if (!rwh)
@@ skipping 37 matching lines @@
   Java_ImeAdapter_populateUnderlinesFromSpans(
       env, obj, text, reinterpret_cast<jlong>(&underlines));
 
   // Sort spans by |.startOffset|.
   std::sort(underlines.begin(), underlines.end());
 
   return underlines;
 }
 
 }  // namespace content