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| 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #include "content/browser/renderer_host/ime_adapter_android.h" |
| 6 |
| 7 #include <algorithm> |
| 8 #include <android/input.h> |
| 9 #include <vector> |
| 10 |
| 11 #include "base/android/jni_android.h" |
| 12 #include "base/android/jni_array.h" |
| 13 #include "base/android/jni_string.h" |
| 14 #include "base/android/scoped_java_ref.h" |
| 15 #include "base/strings/utf_string_conversions.h" |
| 16 #include "base/time/time.h" |
| 17 #include "content/browser/frame_host/render_frame_host_impl.h" |
| 18 #include "content/browser/renderer_host/render_view_host_delegate.h" |
| 19 #include "content/browser/renderer_host/render_widget_host_impl.h" |
| 20 #include "content/browser/renderer_host/render_widget_host_view_android.h" |
| 21 #include "content/common/input_messages.h" |
| 22 #include "content/common/view_messages.h" |
| 23 #include "content/public/browser/browser_thread.h" |
| 24 #include "content/public/browser/native_web_keyboard_event.h" |
| 25 #include "content/public/browser/web_contents.h" |
| 26 #include "jni/ImeAdapter_jni.h" |
| 27 #include "third_party/WebKit/public/platform/WebInputEvent.h" |
| 28 #include "third_party/WebKit/public/platform/WebTextInputType.h" |
| 29 #include "third_party/WebKit/public/web/WebCompositionUnderline.h" |
| 30 |
| 31 using base::android::AttachCurrentThread; |
| 32 using base::android::ConvertJavaStringToUTF16; |
| 33 using base::android::JavaParamRef; |
| 34 |
| 35 namespace content { |
| 36 namespace { |
| 37 |
| 38 // Maps a java KeyEvent into a NativeWebKeyboardEvent. |
| 39 // |java_key_event| is used to maintain a globalref for KeyEvent. |
| 40 // |type| will determine the WebInputEvent type. |
| 41 // type, |modifiers|, |time_ms|, |key_code|, |unicode_char| is used to create |
| 42 // WebKeyboardEvent. |key_code| is also needed ad need to treat the enter key |
| 43 // as a key press of character \r. |
| 44 NativeWebKeyboardEvent NativeWebKeyboardEventFromKeyEvent( |
| 45 JNIEnv* env, |
| 46 const base::android::JavaRef<jobject>& java_key_event, |
| 47 int type, |
| 48 int modifiers, |
| 49 jlong time_ms, |
| 50 int key_code, |
| 51 int scan_code, |
| 52 bool is_system_key, |
| 53 int unicode_char) { |
| 54 return NativeWebKeyboardEvent(env, java_key_event, |
| 55 static_cast<blink::WebInputEvent::Type>(type), |
| 56 modifiers, time_ms / 1000.0, key_code, |
| 57 scan_code, unicode_char, is_system_key); |
| 58 } |
| 59 |
| 60 } // anonymous namespace |
| 61 |
| 62 bool RegisterImeAdapter(JNIEnv* env) { |
| 63 return RegisterNativesImpl(env); |
| 64 } |
| 65 |
| 66 // Callback from Java to convert BackgroundColorSpan data to a |
| 67 // blink::WebCompositionUnderline instance, and append it to |underlines_ptr|. |
| 68 void AppendBackgroundColorSpan(JNIEnv*, |
| 69 const JavaParamRef<jclass>&, |
| 70 jlong underlines_ptr, |
| 71 jint start, |
| 72 jint end, |
| 73 jint background_color) { |
| 74 DCHECK_GE(start, 0); |
| 75 DCHECK_GE(end, 0); |
| 76 // Do not check |background_color|. |
| 77 std::vector<blink::WebCompositionUnderline>* underlines = |
| 78 reinterpret_cast<std::vector<blink::WebCompositionUnderline>*>( |
| 79 underlines_ptr); |
| 80 underlines->push_back( |
| 81 blink::WebCompositionUnderline(static_cast<unsigned>(start), |
| 82 static_cast<unsigned>(end), |
| 83 SK_ColorTRANSPARENT, |
| 84 false, |
| 85 static_cast<unsigned>(background_color))); |
| 86 } |
| 87 |
| 88 // Callback from Java to convert UnderlineSpan data to a |
| 89 // blink::WebCompositionUnderline instance, and append it to |underlines_ptr|. |
| 90 void AppendUnderlineSpan(JNIEnv*, |
| 91 const JavaParamRef<jclass>&, |
| 92 jlong underlines_ptr, |
| 93 jint start, |
| 94 jint end) { |
| 95 DCHECK_GE(start, 0); |
| 96 DCHECK_GE(end, 0); |
| 97 std::vector<blink::WebCompositionUnderline>* underlines = |
| 98 reinterpret_cast<std::vector<blink::WebCompositionUnderline>*>( |
| 99 underlines_ptr); |
| 100 underlines->push_back( |
| 101 blink::WebCompositionUnderline(static_cast<unsigned>(start), |
| 102 static_cast<unsigned>(end), |
| 103 SK_ColorBLACK, |
| 104 false, |
| 105 SK_ColorTRANSPARENT)); |
| 106 } |
| 107 |
| 108 ImeAdapterAndroid::ImeAdapterAndroid(RenderWidgetHostViewAndroid* rwhva) |
| 109 : rwhva_(rwhva) { |
| 110 DCHECK(rwhva_); |
| 111 } |
| 112 |
| 113 ImeAdapterAndroid::~ImeAdapterAndroid() { |
| 114 JNIEnv* env = AttachCurrentThread(); |
| 115 base::android::ScopedJavaLocalRef<jobject> obj = java_ime_adapter_.get(env); |
| 116 if (!obj.is_null()) |
| 117 Java_ImeAdapter_detach(env, obj); |
| 118 } |
| 119 |
| 120 bool ImeAdapterAndroid::SendKeyEvent( |
| 121 JNIEnv* env, |
| 122 const JavaParamRef<jobject>&, |
| 123 const JavaParamRef<jobject>& original_key_event, |
| 124 int type, |
| 125 int modifiers, |
| 126 jlong time_ms, |
| 127 int key_code, |
| 128 int scan_code, |
| 129 bool is_system_key, |
| 130 int unicode_char) { |
| 131 NativeWebKeyboardEvent event = NativeWebKeyboardEventFromKeyEvent( |
| 132 env, original_key_event, type, modifiers, time_ms, key_code, scan_code, |
| 133 is_system_key, unicode_char); |
| 134 rwhva_->SendKeyEvent(event); |
| 135 return true; |
| 136 } |
| 137 |
| 138 void ImeAdapterAndroid::SetComposingText(JNIEnv* env, |
| 139 const JavaParamRef<jobject>& obj, |
| 140 const JavaParamRef<jobject>& text, |
| 141 const JavaParamRef<jstring>& text_str, |
| 142 int relative_cursor_pos) { |
| 143 RenderWidgetHostImpl* rwhi = GetFocusedWidget(); |
| 144 if (!rwhi) |
| 145 return; |
| 146 |
| 147 base::string16 text16 = ConvertJavaStringToUTF16(env, text_str); |
| 148 |
| 149 std::vector<blink::WebCompositionUnderline> underlines = |
| 150 GetUnderlinesFromSpans(env, obj, text, text16); |
| 151 |
| 152 // Default to plain underline if we didn't find any span that we care about. |
| 153 if (underlines.empty()) { |
| 154 underlines.push_back(blink::WebCompositionUnderline( |
| 155 0, text16.length(), SK_ColorBLACK, false, SK_ColorTRANSPARENT)); |
| 156 } |
| 157 |
| 158 // relative_cursor_pos is as described in the Android API for |
| 159 // InputConnection#setComposingText, whereas the parameters for |
| 160 // ImeSetComposition are relative to the start of the composition. |
| 161 if (relative_cursor_pos > 0) |
| 162 relative_cursor_pos = text16.length() + relative_cursor_pos - 1; |
| 163 |
| 164 rwhi->ImeSetComposition(text16, underlines, gfx::Range::InvalidRange(), |
| 165 relative_cursor_pos, relative_cursor_pos); |
| 166 } |
| 167 |
| 168 void ImeAdapterAndroid::CommitText(JNIEnv* env, |
| 169 const JavaParamRef<jobject>& obj, |
| 170 const JavaParamRef<jobject>& text, |
| 171 const JavaParamRef<jstring>& text_str, |
| 172 int relative_cursor_pos) { |
| 173 RenderWidgetHostImpl* rwhi = GetFocusedWidget(); |
| 174 if (!rwhi) |
| 175 return; |
| 176 |
| 177 base::string16 text16 = ConvertJavaStringToUTF16(env, text_str); |
| 178 |
| 179 std::vector<blink::WebCompositionUnderline> underlines = |
| 180 GetUnderlinesFromSpans(env, obj, text, text16); |
| 181 |
| 182 // relative_cursor_pos is as described in the Android API for |
| 183 // InputConnection#commitText, whereas the parameters for |
| 184 // ImeConfirmComposition are relative to the end of the composition. |
| 185 if (relative_cursor_pos > 0) |
| 186 relative_cursor_pos--; |
| 187 else |
| 188 relative_cursor_pos -= text16.length(); |
| 189 |
| 190 rwhi->ImeCommitText(text16, underlines, gfx::Range::InvalidRange(), |
| 191 relative_cursor_pos); |
| 192 } |
| 193 |
| 194 void ImeAdapterAndroid::FinishComposingText(JNIEnv* env, |
| 195 const JavaParamRef<jobject>&) { |
| 196 RenderWidgetHostImpl* rwhi = GetFocusedWidget(); |
| 197 if (!rwhi) |
| 198 return; |
| 199 |
| 200 rwhi->ImeFinishComposingText(true); |
| 201 } |
| 202 |
| 203 void ImeAdapterAndroid::AttachImeAdapter( |
| 204 JNIEnv* env, |
| 205 const JavaParamRef<jobject>& java_object) { |
| 206 java_ime_adapter_ = JavaObjectWeakGlobalRef(env, java_object); |
| 207 } |
| 208 |
| 209 void ImeAdapterAndroid::CancelComposition() { |
| 210 base::android::ScopedJavaLocalRef<jobject> obj = |
| 211 java_ime_adapter_.get(AttachCurrentThread()); |
| 212 if (!obj.is_null()) |
| 213 Java_ImeAdapter_cancelComposition(AttachCurrentThread(), obj); |
| 214 } |
| 215 |
| 216 void ImeAdapterAndroid::FocusedNodeChanged(bool is_editable_node) { |
| 217 base::android::ScopedJavaLocalRef<jobject> obj = |
| 218 java_ime_adapter_.get(AttachCurrentThread()); |
| 219 if (!obj.is_null()) { |
| 220 Java_ImeAdapter_focusedNodeChanged(AttachCurrentThread(), obj, |
| 221 is_editable_node); |
| 222 } |
| 223 } |
| 224 |
| 225 void ImeAdapterAndroid::SetEditableSelectionOffsets( |
| 226 JNIEnv*, |
| 227 const JavaParamRef<jobject>&, |
| 228 int start, |
| 229 int end) { |
| 230 RenderFrameHost* rfh = GetFocusedFrame(); |
| 231 if (!rfh) |
| 232 return; |
| 233 |
| 234 rfh->Send(new InputMsg_SetEditableSelectionOffsets(rfh->GetRoutingID(), start, |
| 235 end)); |
| 236 } |
| 237 |
| 238 void ImeAdapterAndroid::SetCharacterBounds( |
| 239 const std::vector<gfx::RectF>& character_bounds) { |
| 240 JNIEnv* env = AttachCurrentThread(); |
| 241 base::android::ScopedJavaLocalRef<jobject> obj = java_ime_adapter_.get(env); |
| 242 if (obj.is_null()) |
| 243 return; |
| 244 |
| 245 const size_t coordinates_array_size = character_bounds.size() * 4; |
| 246 std::unique_ptr<float[]> coordinates_array(new float[coordinates_array_size]); |
| 247 for (size_t i = 0; i < character_bounds.size(); ++i) { |
| 248 const gfx::RectF& rect = character_bounds[i]; |
| 249 const size_t coordinates_array_index = i * 4; |
| 250 coordinates_array[coordinates_array_index + 0] = rect.x(); |
| 251 coordinates_array[coordinates_array_index + 1] = rect.y(); |
| 252 coordinates_array[coordinates_array_index + 2] = rect.right(); |
| 253 coordinates_array[coordinates_array_index + 3] = rect.bottom(); |
| 254 } |
| 255 Java_ImeAdapter_setCharacterBounds( |
| 256 env, obj, base::android::ToJavaFloatArray(env, coordinates_array.get(), |
| 257 coordinates_array_size)); |
| 258 } |
| 259 |
| 260 void ImeAdapterAndroid::SetComposingRegion(JNIEnv*, |
| 261 const JavaParamRef<jobject>&, |
| 262 int start, |
| 263 int end) { |
| 264 RenderFrameHost* rfh = GetFocusedFrame(); |
| 265 if (!rfh) |
| 266 return; |
| 267 |
| 268 std::vector<blink::WebCompositionUnderline> underlines; |
| 269 underlines.push_back(blink::WebCompositionUnderline( |
| 270 0, end - start, SK_ColorBLACK, false, SK_ColorTRANSPARENT)); |
| 271 |
| 272 rfh->Send(new InputMsg_SetCompositionFromExistingText( |
| 273 rfh->GetRoutingID(), start, end, underlines)); |
| 274 } |
| 275 |
| 276 void ImeAdapterAndroid::DeleteSurroundingText(JNIEnv*, |
| 277 const JavaParamRef<jobject>&, |
| 278 int before, |
| 279 int after) { |
| 280 RenderFrameHostImpl* rfh = |
| 281 static_cast<RenderFrameHostImpl*>(GetFocusedFrame()); |
| 282 if (rfh) |
| 283 rfh->DeleteSurroundingText(before, after); |
| 284 } |
| 285 |
| 286 void ImeAdapterAndroid::DeleteSurroundingTextInCodePoints( |
| 287 JNIEnv*, |
| 288 const JavaParamRef<jobject>&, |
| 289 int before, |
| 290 int after) { |
| 291 RenderFrameHostImpl* rfh = |
| 292 static_cast<RenderFrameHostImpl*>(GetFocusedFrame()); |
| 293 if (rfh) |
| 294 rfh->DeleteSurroundingTextInCodePoints(before, after); |
| 295 } |
| 296 |
| 297 bool ImeAdapterAndroid::RequestTextInputStateUpdate( |
| 298 JNIEnv* env, |
| 299 const JavaParamRef<jobject>&) { |
| 300 RenderWidgetHostImpl* rwhi = GetFocusedWidget(); |
| 301 if (!rwhi) |
| 302 return false; |
| 303 rwhi->Send(new InputMsg_RequestTextInputStateUpdate(rwhi->GetRoutingID())); |
| 304 return true; |
| 305 } |
| 306 |
| 307 void ImeAdapterAndroid::RequestCursorUpdate( |
| 308 JNIEnv* env, |
| 309 const base::android::JavaParamRef<jobject>& obj, |
| 310 bool immediate_request, |
| 311 bool monitor_request) { |
| 312 RenderWidgetHostImpl* rwhi = GetFocusedWidget(); |
| 313 if (!rwhi) |
| 314 return; |
| 315 rwhi->Send(new InputMsg_RequestCompositionUpdates( |
| 316 rwhi->GetRoutingID(), immediate_request, monitor_request)); |
| 317 } |
| 318 |
| 319 void ImeAdapterAndroid::ResetImeAdapter(JNIEnv* env, |
| 320 const JavaParamRef<jobject>&) { |
| 321 java_ime_adapter_.reset(); |
| 322 } |
| 323 |
| 324 RenderWidgetHostImpl* ImeAdapterAndroid::GetFocusedWidget() { |
| 325 DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| 326 return rwhva_->GetFocusedWidget(); |
| 327 } |
| 328 |
| 329 RenderFrameHost* ImeAdapterAndroid::GetFocusedFrame() { |
| 330 DCHECK_CURRENTLY_ON(BrowserThread::UI); |
| 331 // We get the focused frame from the WebContents of the page. Although |
| 332 // |rwhva_->GetFocusedWidget()| does a similar thing, there is no direct way |
| 333 // to get a RenderFrameHost from its RWH. |
| 334 RenderWidgetHostImpl* rwh = |
| 335 RenderWidgetHostImpl::From(rwhva_->GetRenderWidgetHost()); |
| 336 if (!rwh || !rwh->delegate()) |
| 337 return nullptr; |
| 338 |
| 339 if (auto* contents = rwh->delegate()->GetAsWebContents()) |
| 340 return contents->GetFocusedFrame(); |
| 341 |
| 342 return nullptr; |
| 343 } |
| 344 |
| 345 std::vector<blink::WebCompositionUnderline> |
| 346 ImeAdapterAndroid::GetUnderlinesFromSpans( |
| 347 JNIEnv* env, |
| 348 const base::android::JavaParamRef<jobject>& obj, |
| 349 const base::android::JavaParamRef<jobject>& text, |
| 350 const base::string16& text16) { |
| 351 std::vector<blink::WebCompositionUnderline> underlines; |
| 352 // Iterate over spans in |text|, dispatch those that we care about (e.g., |
| 353 // BackgroundColorSpan) to a matching callback (e.g., |
| 354 // AppendBackgroundColorSpan()), and populate |underlines|. |
| 355 Java_ImeAdapter_populateUnderlinesFromSpans( |
| 356 env, obj, text, reinterpret_cast<jlong>(&underlines)); |
| 357 |
| 358 // Sort spans by |.startOffset|. |
| 359 std::sort(underlines.begin(), underlines.end()); |
| 360 |
| 361 return underlines; |
| 362 } |
| 363 |
| 364 } // namespace content |
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