Passing BackgroundColorSpan and UnderlineSpan from Clank to Blink.

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>
 
 #include "base/android/jni_android.h"
 #include "base/android/jni_string.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/time/time.h"
 #include "content/browser/frame_host/frame_tree.h"
 #include "content/browser/frame_host/frame_tree_node.h"
 #include "content/browser/frame_host/render_frame_host_impl.h"
 #include "content/browser/renderer_host/render_view_host_delegate.h"
@@ skipping 62 matching lines @@
       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_CONTENT_EDITABLE);
   return true;
 }
 
+// Callback from Java to convert BackgroundColorSpan data to a
+// blink::WebCompositionUnderline instance, and append it to |underlines_ptr|.
+void AppendBackgroundColorSpan(JNIEnv*,
+                               jclass,
+                               jlong underlines_ptr,
+                               jint start,
+                               jint end,
+                               jint background_color) {
+  DCHECK(start >= 0);
+  DCHECK(end >= 0);
+  // Do not check |background_color|.
+  std::vector<blink::WebCompositionUnderline>* underlines =
+      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 UnderlineSpan data to a
+// blink::WebCompositionUnderline instance, and append it to |underlines_ptr|.
+void AppendUnderlineSpan(JNIEnv*,
+                         jclass,
+                         jlong underlines_ptr,
+                         jint start,
+                         jint end) {
+  DCHECK(start >= 0);
+  DCHECK(end >= 0);
+  std::vector<blink::WebCompositionUnderline>* underlines =
+      reinterpret_cast<std::vector<blink::WebCompositionUnderline>*>(
+          underlines_ptr);
+  underlines->push_back(
+      blink::WebCompositionUnderline(static_cast<unsigned>(start),
+                                     static_cast<unsigned>(end),
+                                     SK_ColorBLACK,
+                                     false,
+                                     SK_ColorTRANSPARENT));
+}
+
 ImeAdapterAndroid::ImeAdapterAndroid(RenderWidgetHostViewAndroid* rwhva)
     : rwhva_(rwhva) {
 }
 
 ImeAdapterAndroid::~ImeAdapterAndroid() {
   JNIEnv* env = AttachCurrentThread();
   base::android::ScopedJavaLocalRef<jobject> obj = java_ime_adapter_.get(env);
   if (!obj.is_null())
     Java_ImeAdapter_detach(env, obj.obj());
 }
@@ skipping 31 matching lines @@
     // roundtrip back to java such synthetic event.
     NativeWebKeyboardEvent char_event(blink::WebInputEvent::Char, modifiers,
                                       time_ms / 1000.0, key_code, unicode_char,
                                       is_system_key);
     char_event.skip_in_browser = key_down_text_insertion;
     rwhva_->SendKeyEvent(char_event);
   }
   return true;
 }
 
-void ImeAdapterAndroid::SetComposingText(JNIEnv* env, jobject, jstring text,
+void ImeAdapterAndroid::SetComposingText(JNIEnv* env,
+                                         jobject obj,
+                                         jobject text,
+                                         jstring text_str,
                                          int new_cursor_pos) {
   RenderWidgetHostImpl* rwhi = GetRenderWidgetHostImpl();
   if (!rwhi)
     return;
 
-  base::string16 text16 = ConvertJavaStringToUTF16(env, text);
+  base::string16 text16 = ConvertJavaStringToUTF16(env, text_str);
+
   std::vector<blink::WebCompositionUnderline> underlines;
-  underlines.push_back(
-      blink::WebCompositionUnderline(0, text16.length(), SK_ColorBLACK,
-                                      false));
+  // Iterate over spans in |text|, dispatch those that we care about (e.g.,
+  // BackgroundColorSpan) to a matching callback (e.g.,
+  // AppendBackgroundColorSpan()), and populate |underlines|.
+  Java_ImeAdapter_populateUnderlinesFromSpans(
+      env, obj, text, reinterpret_cast<jlong>(&underlines));
+
+  // Default to plain underline if we didn't find any span that we care about.
+  if (underlines.empty()) {
+    underlines.push_back(blink::WebCompositionUnderline(
+        0, text16.length(), SK_ColorBLACK, false, SK_ColorTRANSPARENT));
+  }
+  // Sort spans by |.startOffset|.
+  std::sort(underlines.begin(), underlines.end());
+
   // 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) {
+void ImeAdapterAndroid::CommitText(JNIEnv* env, jobject, jstring text_str) {
   RenderWidgetHostImpl* rwhi = GetRenderWidgetHostImpl();
   if (!rwhi)
     return;
 
-  base::string16 text16 = ConvertJavaStringToUTF16(env, text);
+  base::string16 text16 = ConvertJavaStringToUTF16(env, text_str);
   rwhi->ImeConfirmComposition(text16, gfx::Range::InvalidRange(), false);
 }
 
 void ImeAdapterAndroid::FinishComposingText(JNIEnv* env, jobject) {
   RenderWidgetHostImpl* rwhi = GetRenderWidgetHostImpl();
   if (!rwhi)
     return;
 
   rwhi->ImeConfirmComposition(base::string16(), gfx::Range::InvalidRange(),
                               true);
@@ skipping 30 matching lines @@
                                                      start, end));
 }
 
 void ImeAdapterAndroid::SetComposingRegion(JNIEnv*, jobject,
                                            int start, int end) {
   RenderFrameHost* rfh = GetFocusedFrame();
   if (!rfh)
     return;
 
   std::vector<blink::WebCompositionUnderline> underlines;
-  underlines.push_back(
-      blink::WebCompositionUnderline(0, end - start, SK_ColorBLACK, false));
+  underlines.push_back(blink::WebCompositionUnderline(
+      0, end - start, SK_ColorBLACK, false, SK_ColorTRANSPARENT));
 
   rfh->Send(new FrameMsg_SetCompositionFromExistingText(
       rfh->GetRoutingID(), start, end, underlines));
 }
 
 void ImeAdapterAndroid::DeleteSurroundingText(JNIEnv*, jobject,
                                               int before, int after) {
   RenderFrameHostImpl* rfh =
       static_cast<RenderFrameHostImpl*>(GetFocusedFrame());
   if (rfh)
@@ skipping 62 matching lines @@
 WebContents* ImeAdapterAndroid::GetWebContents() {
   RenderWidgetHostImpl* rwh = GetRenderWidgetHostImpl();
   if (!rwh)
     return NULL;
   if (!rwh->IsRenderView())
     return NULL;
   return WebContents::FromRenderViewHost(RenderViewHost::From(rwh));
 }
 
 }  // namespace content