// Copyright 2017 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "content/browser/android/ime_adapter_android.h"
#include <android/input.h>
#include <algorithm>
#include <vector>
#include "base/android/jni_android.h"
#include "base/android/jni_array.h"
#include "base/android/jni_bytebuffer.h"
#include "base/android/jni_string.h"
#include "base/android/scoped_java_ref.h"
#include "base/containers/span.h"
#include "base/strings/utf_string_conversions.h"
#include "base/time/time.h"
#include "components/input/native_web_keyboard_event.h"
#include "content/browser/android/text_suggestion_host_android.h"
#include "content/browser/renderer_host/render_frame_host_impl.h"
#include "content/browser/renderer_host/render_view_host_delegate.h"
#include "content/browser/renderer_host/render_widget_host_impl.h"
#include "content/browser/renderer_host/render_widget_host_view_android.h"
#include "content/browser/web_contents/web_contents_impl.h"
#include "content/public/browser/browser_thread.h"
#include "third_party/blink/public/common/input/web_input_event.h"
#include "third_party/blink/public/mojom/input/ime_host.mojom.h"
#include "third_party/blink/public/mojom/input/stylus_writing_gesture.mojom.h"
#include "third_party/blink/public/platform/web_text_input_type.h"
#include "ui/base/ime/ime_text_span.h"
// Must come after all headers that specialize FromJniType() / ToJniType().
#include "content/public/android/content_jni_headers/ImeAdapterImpl_jni.h"
using base::android::AppendJavaStringArrayToStringVector;
using base::android::AttachCurrentThread;
using base::android::ConvertJavaStringToUTF16;
using base::android::ConvertUTF16ToJavaString;
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.
input::NativeWebKeyboardEvent NativeWebKeyboardEventFromKeyEvent(
JNIEnv* env,
const base::android::JavaRef<jobject>& java_key_event,
int type,
int modifiers,
jlong time_ms,
int key_code,
int scan_code,
bool is_system_key,
int unicode_char) {
return input::NativeWebKeyboardEvent(
env, java_key_event, static_cast<blink::WebInputEvent::Type>(type),
modifiers, base::TimeTicks() + base::Milliseconds(time_ms), key_code,
scan_code, unicode_char, is_system_key);
}
// Takes a std::vector of Rect objects and populates a float vector with each
// rectangle's left, top, right and bottom points.
std::vector<float> RectVectorToFloatVector(
const std::vector<gfx::Rect>& rects) {
std::vector<float> points;
points.reserve(rects.size() * 4);
for (auto& rect : rects) {
points.push_back(rect.x());
points.push_back(rect.y());
points.push_back(rect.right());
points.push_back(rect.bottom());
}
return points;
}
} // anonymous namespace
jlong JNI_ImeAdapterImpl_Init(JNIEnv* env,
const JavaParamRef<jobject>& obj,
const JavaParamRef<jobject>& jweb_contents) {
WebContents* web_contents = WebContents::FromJavaWebContents(jweb_contents);
DCHECK(web_contents);
auto* ime_adapter = new ImeAdapterAndroid(env, obj, web_contents);
ime_adapter->Initialize();
return reinterpret_cast<intptr_t>(ime_adapter);
}
// Callback from Java to convert BackgroundColorSpan data to a
// ui::ImeTextSpan instance, and append it to |ime_text_spans_ptr|.
void JNI_ImeAdapterImpl_AppendBackgroundColorSpan(JNIEnv*,
jlong ime_text_spans_ptr,
jint start,
jint end,
jint background_color) {
DCHECK_GE(start, 0);
DCHECK_GE(end, 0);
// Do not check |background_color|.
std::vector<ui::ImeTextSpan>* ime_text_spans =
reinterpret_cast<std::vector<ui::ImeTextSpan>*>(ime_text_spans_ptr);
ime_text_spans->push_back(ui::ImeTextSpan(
ui::ImeTextSpan::Type::kComposition, static_cast<unsigned>(start),
static_cast<unsigned>(end), ui::ImeTextSpan::Thickness::kNone,
ui::ImeTextSpan::UnderlineStyle::kNone,
static_cast<unsigned>(background_color), SK_ColorTRANSPARENT,
std::vector<std::string>()));
}
// Callback from Java to convert ForegroundColorSpan data to a
// ui::ImeTextSpan instance, and append it to |ime_text_spans_ptr|.
void JNI_ImeAdapterImpl_AppendForegroundColorSpan(JNIEnv*,
jlong ime_text_spans_ptr,
jint start,
jint end,
jint foreground_color) {
DCHECK_GE(start, 0);
DCHECK_GE(end, 0);
// Do not check |foreground_color|.
std::vector<ui::ImeTextSpan>* ime_text_spans =
reinterpret_cast<std::vector<ui::ImeTextSpan>*>(ime_text_spans_ptr);
ime_text_spans->push_back(ui::ImeTextSpan(
ui::ImeTextSpan::Type::kComposition, static_cast<unsigned>(start),
static_cast<unsigned>(end), ui::ImeTextSpan::Thickness::kNone,
ui::ImeTextSpan::UnderlineStyle::kNone, SK_ColorTRANSPARENT,
SK_ColorTRANSPARENT, std::vector<std::string>(),
static_cast<unsigned>(foreground_color)));
}
// Callback from Java to convert SuggestionSpan data to a
// ui::ImeTextSpan instance, and append it to |ime_text_spans_ptr|.
void JNI_ImeAdapterImpl_AppendSuggestionSpan(
JNIEnv* env,
jlong ime_text_spans_ptr,
jint start,
jint end,
jboolean is_misspelling,
jboolean remove_on_finish_composing,
jint underline_color,
jint suggestion_highlight_color,
const JavaParamRef<jobjectArray>& suggestions) {
DCHECK_GE(start, 0);
DCHECK_GE(end, 0);
ui::ImeTextSpan::Type type =
is_misspelling ? ui::ImeTextSpan::Type::kMisspellingSuggestion
: ui::ImeTextSpan::Type::kSuggestion;
std::vector<ui::ImeTextSpan>* ime_text_spans =
reinterpret_cast<std::vector<ui::ImeTextSpan>*>(ime_text_spans_ptr);
std::vector<std::string> suggestions_vec;
AppendJavaStringArrayToStringVector(env, suggestions, &suggestions_vec);
ui::ImeTextSpan ime_text_span = ui::ImeTextSpan(
type, static_cast<unsigned>(start), static_cast<unsigned>(end),
ui::ImeTextSpan::Thickness::kThick,
ui::ImeTextSpan::UnderlineStyle::kSolid, SK_ColorTRANSPARENT,
static_cast<unsigned>(suggestion_highlight_color), suggestions_vec);
ime_text_span.remove_on_finish_composing = remove_on_finish_composing;
ime_text_span.underline_color = static_cast<unsigned>(underline_color);
ime_text_spans->push_back(ime_text_span);
}
// Callback from Java to convert UnderlineSpan data to a
// ui::ImeTextSpan instance, and append it to |ime_text_spans_ptr|.
void JNI_ImeAdapterImpl_AppendUnderlineSpan(JNIEnv*,
jlong ime_text_spans_ptr,
jint start,
jint end) {
DCHECK_GE(start, 0);
DCHECK_GE(end, 0);
std::vector<ui::ImeTextSpan>* ime_text_spans =
reinterpret_cast<std::vector<ui::ImeTextSpan>*>(ime_text_spans_ptr);
ime_text_spans->push_back(ui::ImeTextSpan(
ui::ImeTextSpan::Type::kComposition, static_cast<unsigned>(start),
static_cast<unsigned>(end), ui::ImeTextSpan::Thickness::kThin,
ui::ImeTextSpan::UnderlineStyle::kSolid, SK_ColorTRANSPARENT,
SK_ColorTRANSPARENT, std::vector<std::string>()));
}
ImeAdapterAndroid::ImeAdapterAndroid(JNIEnv* env,
const JavaParamRef<jobject>& obj,
WebContents* web_contents)
: RenderWidgetHostConnector(web_contents), rwhva_(nullptr) {
java_ime_adapter_ = JavaObjectWeakGlobalRef(env, obj);
// Set up mojo client for TextSuggestionHost in advance. Java side is
// initialized lazily right before showing the menu first time.
TextSuggestionHostAndroid::Create(env, web_contents);
}
ImeAdapterAndroid::~ImeAdapterAndroid() {
JNIEnv* env = AttachCurrentThread();
ScopedJavaLocalRef<jobject> obj = java_ime_adapter_.get(env);
if (!obj.is_null())
Java_ImeAdapterImpl_onNativeDestroyed(env, obj);
}
void ImeAdapterAndroid::UpdateRenderProcessConnection(
RenderWidgetHostViewAndroid* old_rwhva,
RenderWidgetHostViewAndroid* new_rwhva) {
if (old_rwhva)
old_rwhva->set_ime_adapter(nullptr);
if (new_rwhva) {
new_rwhva->set_ime_adapter(this);
if (!old_rwhva && new_rwhva) {
JNIEnv* env = AttachCurrentThread();
ScopedJavaLocalRef<jobject> obj = java_ime_adapter_.get(env);
if (!obj.is_null())
Java_ImeAdapterImpl_onConnectedToRenderProcess(env, obj);
}
}
rwhva_ = new_rwhva;
// Must be called after the new rwhva has been set.
SetImeRenderWidgetHost();
}
void ImeAdapterAndroid::UpdateState(const ui::mojom::TextInputState& state) {
JNIEnv* env = AttachCurrentThread();
ScopedJavaLocalRef<jobject> obj = java_ime_adapter_.get(env);
if (obj.is_null())
return;
ScopedJavaLocalRef<jstring> jstring_text =
ConvertUTF16ToJavaString(env, state.value.value_or(std::u16string()));
Java_ImeAdapterImpl_updateState(
env, obj, static_cast<int>(state.type), state.flags, state.mode,
static_cast<int>(state.action), state.show_ime_if_needed,
state.always_hide_ime, jstring_text, state.selection.start(),
state.selection.end(),
state.composition ? state.composition.value().start() : -1,
state.composition ? state.composition.value().end() : -1,
state.reply_to_request,
static_cast<int>(state.last_vk_visibility_request),
static_cast<int>(state.vk_policy));
}
void ImeAdapterAndroid::UpdateOnTouchDown() {
JNIEnv* env = AttachCurrentThread();
ScopedJavaLocalRef<jobject> obj = java_ime_adapter_.get(env);
if (obj.is_null())
return;
Java_ImeAdapterImpl_updateOnTouchDown(env, obj);
}
void ImeAdapterAndroid::UpdateFrameInfo(
const gfx::SelectionBound& selection_start,
float dip_scale,
float content_offset_ypix) {
JNIEnv* env = AttachCurrentThread();
ScopedJavaLocalRef<jobject> obj = java_ime_adapter_.get(env);
if (obj.is_null())
return;
const jboolean has_insertion_marker =
selection_start.type() != gfx::SelectionBound::EMPTY;
const jboolean is_insertion_marker_visible = selection_start.visible();
const jfloat insertion_marker_horizontal =
has_insertion_marker ? selection_start.edge_start().x() : 0.0f;
const jfloat insertion_marker_top =
has_insertion_marker ? selection_start.edge_start().y() : 0.0f;
const jfloat insertion_marker_bottom =
has_insertion_marker ? selection_start.edge_end().y() : 0.0f;
Java_ImeAdapterImpl_updateFrameInfo(
env, obj, dip_scale, content_offset_ypix, has_insertion_marker,
is_insertion_marker_visible, insertion_marker_horizontal,
insertion_marker_top, insertion_marker_bottom);
}
void ImeAdapterAndroid::OnRenderFrameMetadataChangedAfterActivation(
const gfx::SizeF& new_viewport_size) {
if (old_viewport_size_ == new_viewport_size)
return;
JNIEnv* env = AttachCurrentThread();
ScopedJavaLocalRef<jobject> obj = java_ime_adapter_.get(env);
if (obj.is_null())
return;
const jboolean surface_height_reduced =
new_viewport_size.width() == old_viewport_size_.width() &&
new_viewport_size.height() < old_viewport_size_.height();
old_viewport_size_ = new_viewport_size;
Java_ImeAdapterImpl_onResizeScrollableViewport(env, obj,
surface_height_reduced);
}
bool ImeAdapterAndroid::SendKeyEvent(
JNIEnv* env,
const JavaParamRef<jobject>&,
const JavaParamRef<jobject>& original_key_event,
int type,
int modifiers,
jlong time_ms,
int key_code,
int scan_code,
bool is_system_key,
int unicode_char) {
if (!rwhva_)
return false;
input::NativeWebKeyboardEvent event = NativeWebKeyboardEventFromKeyEvent(
env, original_key_event, type, modifiers, time_ms, key_code, scan_code,
is_system_key, unicode_char);
rwhva_->SendKeyEvent(event);
return true;
}
void ImeAdapterAndroid::SetComposingText(JNIEnv* env,
const JavaParamRef<jobject>& obj,
const JavaParamRef<jobject>& text,
const JavaParamRef<jstring>& text_str,
int relative_cursor_pos) {
RenderWidgetHostImpl* rwhi = GetFocusedWidget();
if (!rwhi)
return;
std::u16string text16 = ConvertJavaStringToUTF16(env, text_str);
std::vector<ui::ImeTextSpan> ime_text_spans =
GetImeTextSpansFromJava(env, obj, text, text16);
// Default to plain underline if we didn't find any span that we care about.
if (ime_text_spans.empty()) {
ime_text_spans.push_back(ui::ImeTextSpan(
ui::ImeTextSpan::Type::kComposition, 0, text16.length(),
ui::ImeTextSpan::Thickness::kThin,
ui::ImeTextSpan::UnderlineStyle::kSolid, SK_ColorTRANSPARENT,
SK_ColorTRANSPARENT, std::vector<std::string>()));
}
// relative_cursor_pos is as described in the Android API for
// InputConnection#setComposingText, whereas the parameters for
// ImeSetComposition are relative to the start of the composition.
if (relative_cursor_pos > 0)
relative_cursor_pos = text16.length() + relative_cursor_pos - 1;
rwhi->ImeSetComposition(text16, ime_text_spans, gfx::Range::InvalidRange(),
relative_cursor_pos, relative_cursor_pos);
}
void ImeAdapterAndroid::CommitText(JNIEnv* env,
const JavaParamRef<jobject>& obj,
const JavaParamRef<jobject>& text,
const JavaParamRef<jstring>& text_str,
int relative_cursor_pos) {
RenderWidgetHostImpl* rwhi = GetFocusedWidget();
if (!rwhi)
return;
std::u16string text16 = ConvertJavaStringToUTF16(env, text_str);
std::vector<ui::ImeTextSpan> ime_text_spans =
GetImeTextSpansFromJava(env, obj, text, text16);
// relative_cursor_pos is as described in the Android API for
// InputConnection#commitText, whereas the parameters for
// ImeConfirmComposition are relative to the end of the composition.
if (relative_cursor_pos > 0)
relative_cursor_pos--;
else
relative_cursor_pos -= text16.length();
rwhi->ImeCommitText(text16, ime_text_spans, gfx::Range::InvalidRange(),
relative_cursor_pos);
}
void ImeAdapterAndroid::FinishComposingText(JNIEnv* env,
const JavaParamRef<jobject>&) {
RenderWidgetHostImpl* rwhi = GetFocusedWidget();
if (!rwhi)
return;
rwhi->ImeFinishComposingText(true);
}
void ImeAdapterAndroid::CancelComposition() {
JNIEnv* env = AttachCurrentThread();
ScopedJavaLocalRef<jobject> obj = java_ime_adapter_.get(env);
if (!obj.is_null())
Java_ImeAdapterImpl_cancelComposition(env, obj);
}
void ImeAdapterAndroid::FocusedNodeChanged(
bool is_editable_node,
const gfx::Rect& node_bounds_in_screen) {
JNIEnv* env = AttachCurrentThread();
ScopedJavaLocalRef<jobject> obj = java_ime_adapter_.get(env);
if (!obj.is_null()) {
Java_ImeAdapterImpl_focusedNodeChanged(
env, obj, is_editable_node, node_bounds_in_screen.x(),
node_bounds_in_screen.y(), node_bounds_in_screen.right(),
node_bounds_in_screen.bottom());
}
}
bool ImeAdapterAndroid::ShouldInitiateStylusWriting() {
JNIEnv* env = AttachCurrentThread();
ScopedJavaLocalRef<jobject> obj = java_ime_adapter_.get(env);
if (!obj.is_null()) {
return Java_ImeAdapterImpl_shouldInitiateStylusWriting(env, obj);
}
return false;
}
void ImeAdapterAndroid::OnEditElementFocusedForStylusWriting(
const gfx::Rect& focused_edit_bounds,
const gfx::Rect& caret_bounds) {
JNIEnv* env = AttachCurrentThread();
ScopedJavaLocalRef<jobject> obj = java_ime_adapter_.get(env);
if (!obj.is_null()) {
gfx::Point caret_center = caret_bounds.CenterPoint();
Java_ImeAdapterImpl_onEditElementFocusedForStylusWriting(
env, obj, focused_edit_bounds.x(), focused_edit_bounds.y(),
focused_edit_bounds.right(), focused_edit_bounds.bottom(),
caret_center.x(), caret_center.y());
}
}
void ImeAdapterAndroid::HandleStylusWritingGestureAction(
JNIEnv* env,
const base::android::JavaParamRef<jobject>&,
const jint id,
const base::android::JavaParamRef<jobject>& jgesture_data_byte_buffer) {
auto* input_handler = GetFocusedFrameWidgetInputHandler();
if (!input_handler)
return;
blink::mojom::StylusWritingGestureDataPtr gesture_data;
if (!blink::mojom::StylusWritingGestureData::Deserialize(
base::android::JavaByteBufferToSpan(env,
jgesture_data_byte_buffer.obj()),
&gesture_data)) {
NOTREACHED_IN_MIGRATION();
return;
}
input_handler->HandleStylusWritingGestureAction(
std::move(gesture_data),
base::BindOnce(&ImeAdapterAndroid::OnStylusWritingGestureActionCompleted,
weak_factory_.GetWeakPtr(), id));
}
void ImeAdapterAndroid::OnStylusWritingGestureActionCompleted(
int id,
blink::mojom::HandwritingGestureResult result) {
JNIEnv* env = AttachCurrentThread();
ScopedJavaLocalRef<jobject> obj = java_ime_adapter_.get(env);
if (!obj.is_null()) {
Java_ImeAdapterImpl_onStylusWritingGestureActionCompleted(env, obj, id,
(int)result);
}
}
void ImeAdapterAndroid::SetImeRenderWidgetHost() {
if (!base::FeatureList::IsEnabled(
blink::features::kCursorAnchorInfoMojoPipe)) {
return;
}
if (!rwhva_) {
return;
}
JNIEnv* env = AttachCurrentThread();
ScopedJavaLocalRef<jobject> obj = java_ime_adapter_.get(env);
if (obj.is_null()) {
return;
}
// Use a pending remote so we can pass it to Blink.
mojo::PendingRemote<blink::mojom::ImeRenderWidgetHost> ime_render_widget_host;
auto receiver = ime_render_widget_host.InitWithNewPipeAndPassReceiver();
Java_ImeAdapterImpl_bindImeRenderHost(env, obj,
receiver.PassPipe().release().value());
rwhva_->PassImeRenderWidgetHost(std::move(ime_render_widget_host));
}
void ImeAdapterAndroid::AdvanceFocusForIME(JNIEnv* env,
const JavaParamRef<jobject>& obj,
jint focus_type) {
RenderFrameHostImpl* rfh =
static_cast<RenderFrameHostImpl*>(GetFocusedFrame());
if (!rfh)
return;
rfh->GetAssociatedLocalFrame()->AdvanceFocusForIME(
static_cast<blink::mojom::FocusType>(focus_type));
}
void ImeAdapterAndroid::SetEditableSelectionOffsets(
JNIEnv*,
const JavaParamRef<jobject>&,
int start,
int end) {
auto* input_handler = GetFocusedFrameWidgetInputHandler();
if (!input_handler)
return;
input_handler->SetEditableSelectionOffsets(start, end);
}
void ImeAdapterAndroid::SetBounds(
const std::vector<gfx::Rect>& character_bounds,
const bool character_bounds_changed,
const std::optional<std::vector<gfx::Rect>>& line_bounds) {
if (!character_bounds_changed && !line_bounds.has_value()) {
return;
}
JNIEnv* env = AttachCurrentThread();
ScopedJavaLocalRef<jobject> obj = java_ime_adapter_.get(env);
if (obj.is_null()) {
return;
}
Java_ImeAdapterImpl_setBounds(
env, obj,
character_bounds_changed
? base::android::ToJavaFloatArray(
env, RectVectorToFloatVector(character_bounds))
: nullptr,
line_bounds.has_value()
? base::android::ToJavaFloatArray(
env, RectVectorToFloatVector(line_bounds.value()))
: nullptr);
}
void ImeAdapterAndroid::SetComposingRegion(JNIEnv*,
const JavaParamRef<jobject>&,
int start,
int end) {
auto* input_handler = GetFocusedFrameWidgetInputHandler();
if (!input_handler)
return;
std::vector<ui::ImeTextSpan> ime_text_spans;
ime_text_spans.push_back(ui::ImeTextSpan(
ui::ImeTextSpan::Type::kComposition, 0, end - start,
ui::ImeTextSpan::Thickness::kThin,
ui::ImeTextSpan::UnderlineStyle::kSolid, SK_ColorTRANSPARENT,
SK_ColorTRANSPARENT, std::vector<std::string>()));
input_handler->SetCompositionFromExistingText(start, end, ime_text_spans);
}
void ImeAdapterAndroid::DeleteSurroundingText(JNIEnv*,
const JavaParamRef<jobject>&,
int before,
int after) {
auto* input_handler = GetFocusedFrameWidgetInputHandler();
if (!input_handler)
return;
input_handler->DeleteSurroundingText(before, after);
}
void ImeAdapterAndroid::DeleteSurroundingTextInCodePoints(
JNIEnv*,
const JavaParamRef<jobject>&,
int before,
int after) {
auto* input_handler = GetFocusedFrameWidgetInputHandler();
if (!input_handler)
return;
input_handler->DeleteSurroundingTextInCodePoints(before, after);
}
bool ImeAdapterAndroid::RequestTextInputStateUpdate(
JNIEnv* env,
const JavaParamRef<jobject>&) {
RenderWidgetHostImpl* rwhi = GetFocusedWidget();
if (!rwhi)
return false;
rwhi->GetWidgetInputHandler()->RequestTextInputStateUpdate();
return true;
}
void ImeAdapterAndroid::RequestCursorUpdate(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& obj,
bool immediate_request,
bool monitor_request) {
RenderWidgetHostImpl* rwhi = GetFocusedWidget();
if (!rwhi)
return;
rwhi->GetWidgetInputHandler()->RequestCompositionUpdates(immediate_request,
monitor_request);
}
RenderWidgetHostImpl* ImeAdapterAndroid::GetFocusedWidget() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
return rwhva_ ? rwhva_->GetFocusedWidget() : nullptr;
}
RenderFrameHost* ImeAdapterAndroid::GetFocusedFrame() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
// We get the focused frame from the WebContents of the page. Although
// |rwhva_->GetFocusedWidget()| does a similar thing, there is no direct way
// to get a RenderFrameHost from its RWH.
if (!rwhva_)
return nullptr;
RenderWidgetHostImpl* rwh =
RenderWidgetHostImpl::From(rwhva_->GetRenderWidgetHost());
if (auto* contents = WebContentsImpl::FromRenderWidgetHostImpl(rwh))
return contents->GetFocusedFrame();
return nullptr;
}
blink::mojom::FrameWidgetInputHandler*
ImeAdapterAndroid::GetFocusedFrameWidgetInputHandler() {
RenderWidgetHostImpl* rwhi = GetFocusedWidget();
if (!rwhi)
return nullptr;
return rwhi->GetFrameWidgetInputHandler();
}
std::vector<ui::ImeTextSpan> ImeAdapterAndroid::GetImeTextSpansFromJava(
JNIEnv* env,
const base::android::JavaParamRef<jobject>& obj,
const base::android::JavaParamRef<jobject>& text,
const std::u16string& text16) {
std::vector<ui::ImeTextSpan> ime_text_spans;
// Iterate over spans in |text|, dispatch those that we care about (e.g.,
// BackgroundColorSpan) to a matching callback (e.g.,
// AppendBackgroundColorSpan()), and populate |ime_text_spans|.
Java_ImeAdapterImpl_populateImeTextSpansFromJava(
env, obj, text, reinterpret_cast<jlong>(&ime_text_spans));
std::sort(ime_text_spans.begin(), ime_text_spans.end(),
[](const ui::ImeTextSpan& span1, const ui::ImeTextSpan& span2) {
return span1.start_offset < span2.start_offset;
});
return ime_text_spans;
}
} // namespace content
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