content/browser/renderer_host/ime_adapter_android.cc

   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 <android/input.h>
   8
   9 #include "base/android/jni_android.h"
  10 #include "base/android/jni_string.h"
  11 #include "base/time.h"
  12 #include "base/utf_string_conversions.h"
  13 #include "content/browser/renderer_host/render_widget_host_impl.h"
  14 #include "content/browser/renderer_host/render_widget_host_view_android.h"
  15 #include "content/common/view_messages.h"
  16 #include "content/public/browser/native_web_keyboard_event.h"
  17 #include "jni/ImeAdapter_jni.h"
  18 #include "third_party/WebKit/Source/WebKit/chromium/public/WebCompositionUnderline.h"
  19 #include "third_party/WebKit/Source/WebKit/chromium/public/WebInputEvent.h"
  20
  21 using base::android::AttachCurrentThread;
  22 using base::android::ConvertJavaStringToUTF16;
  23
  24 namespace content {
  25 namespace {
  26
  27 // Maps a java KeyEvent into a NativeWebKeyboardEvent.
  28 // |java_key_event| is used to maintain a globalref for KeyEvent.
  29 // |action| will help determine the WebInputEvent type.
  30 // type, |modifiers|, |time_ms|, |key_code|, |unicode_char| is used to create
  31 // WebKeyboardEvent. |key_code| is also needed ad need to treat the enter key
  32 // as a key press of character \r.
  33 NativeWebKeyboardEvent NativeWebKeyboardEventFromKeyEvent(
  34     JNIEnv* env,
  35     jobject java_key_event,
  36     int action,
  37     int modifiers,
  38     long time_ms,
  39     int key_code,
  40     bool is_system_key,
  41     int unicode_char) {
  42   WebKit::WebInputEvent::Type type = WebKit::WebInputEvent::Undefined;
  43   if (action == AKEY_EVENT_ACTION_DOWN)
  44     type = WebKit::WebInputEvent::RawKeyDown;
  45   else if (action == AKEY_EVENT_ACTION_UP)
  46     type = WebKit::WebInputEvent::KeyUp;
  47   return NativeWebKeyboardEvent(java_key_event, type, modifiers,
  48       time_ms, key_code, unicode_char, is_system_key);
  49 }
  50
  51 }  // anonymous namespace
  52
  53 bool RegisterImeAdapter(JNIEnv* env) {
  54   if (!RegisterNativesImpl(env))
  55     return false;
  56
  57   Java_ImeAdapter_initializeWebInputEvents(env,
  58                                            WebKit::WebInputEvent::RawKeyDown,
  59                                            WebKit::WebInputEvent::KeyUp,
  60                                            WebKit::WebInputEvent::Char,
  61                                            WebKit::WebInputEvent::ShiftKey,
  62                                            WebKit::WebInputEvent::AltKey,
  63                                            WebKit::WebInputEvent::ControlKey,
  64                                            WebKit::WebInputEvent::CapsLockOn,
  65                                            WebKit::WebInputEvent::NumLockOn);
  66   Java_ImeAdapter_initializeTextInputTypes(
  67       env,
  68       ui::TEXT_INPUT_TYPE_NONE,
  69       ui::TEXT_INPUT_TYPE_TEXT,
  70       ui::TEXT_INPUT_TYPE_TEXT_AREA,
  71       ui::TEXT_INPUT_TYPE_PASSWORD,
  72       ui::TEXT_INPUT_TYPE_SEARCH,
  73       ui::TEXT_INPUT_TYPE_URL,
  74       ui::TEXT_INPUT_TYPE_EMAIL,
  75       ui::TEXT_INPUT_TYPE_TELEPHONE,
  76       ui::TEXT_INPUT_TYPE_NUMBER,
  77       ui::TEXT_INPUT_TYPE_DATE,
  78       ui::TEXT_INPUT_TYPE_DATE_TIME,
  79       ui::TEXT_INPUT_TYPE_DATE_TIME_LOCAL,
  80       ui::TEXT_INPUT_TYPE_MONTH,
  81       ui::TEXT_INPUT_TYPE_TIME,
  82       ui::TEXT_INPUT_TYPE_WEEK,
  83       ui::TEXT_INPUT_TYPE_CONTENT_EDITABLE);
  84   return true;
  85 }
  86
  87 ImeAdapterAndroid::ImeAdapterAndroid(RenderWidgetHostViewAndroid* rwhva)
  88     : rwhva_(rwhva),
  89       java_ime_adapter_(NULL) {
  90 }
  91
  92 ImeAdapterAndroid::~ImeAdapterAndroid() {
  93   if (java_ime_adapter_) {
  94     JNIEnv* env = base::android::AttachCurrentThread();
  95     Java_ImeAdapter_detach(env, java_ime_adapter_);
  96     env->DeleteGlobalRef(java_ime_adapter_);
  97   }
  98 }
  99
 100 bool ImeAdapterAndroid::SendSyntheticKeyEvent(JNIEnv*,
 101                                               jobject,
 102                                               int type,
 103                                               long time_ms,
 104                                               int key_code,
 105                                               int text) {
 106   NativeWebKeyboardEvent event(static_cast<WebKit::WebInputEvent::Type>(type),
 107                                0 /* modifiers */, time_ms / 1000.0, key_code,
 108                                text, false /* is_system_key */);
 109   rwhva_->SendKeyEvent(event);
 110   return true;
 111 }
 112
 113 bool ImeAdapterAndroid::SendKeyEvent(JNIEnv* env, jobject,
 114                                      jobject original_key_event,
 115                                      int action, int modifiers,
 116                                      long time_ms, int key_code,
 117                                      bool is_system_key, int unicode_char) {
 118   NativeWebKeyboardEvent event = NativeWebKeyboardEventFromKeyEvent(
 119           env, original_key_event, action, modifiers,
 120           time_ms, key_code, is_system_key, unicode_char);
 121   rwhva_->SendKeyEvent(event);
 122   if (event.type == WebKit::WebInputEvent::RawKeyDown && event.text[0]) {
 123     // Send a Char event, but without an os_event since we don't want to
 124     // roundtrip back to java such synthetic event.
 125     NativeWebKeyboardEvent char_event(event);
 126     char_event.os_event = NULL;
 127     event.type = WebKit::WebInputEvent::Char;
 128     rwhva_->SendKeyEvent(event);
 129   }
 130   return true;
 131 }
 132
 133 void ImeAdapterAndroid::SetComposingText(JNIEnv* env, jobject, jstring text,
 134                                          int new_cursor_pos) {
 135   RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(
 136       rwhva_->GetRenderWidgetHost());
 137   if (!rwhi)
 138     return;
 139
 140   string16 text16 = ConvertJavaStringToUTF16(env, text);
 141   std::vector<WebKit::WebCompositionUnderline> underlines;
 142   underlines.push_back(
 143       WebKit::WebCompositionUnderline(0, text16.length(), SK_ColorBLACK,
 144                                       false));
 145   // new_cursor_position is as described in the Android API for
 146   // InputConnection#setComposingText, whereas the parameters for
 147   // ImeSetComposition are relative to the start of the composition.
 148   if (new_cursor_pos > 0)
 149     new_cursor_pos = text16.length() + new_cursor_pos - 1;
 150
 151   rwhi->ImeSetComposition(text16, underlines, new_cursor_pos, new_cursor_pos);
 152 }
 153
 154
 155 void ImeAdapterAndroid::CommitText(JNIEnv* env, jobject, jstring text) {
 156   RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(
 157       rwhva_->GetRenderWidgetHost());
 158   if (!rwhi)
 159     return;
 160
 161   string16 text16 = ConvertJavaStringToUTF16(env, text);
 162   rwhi->ImeConfirmComposition(text16);
 163 }
 164
 165 void ImeAdapterAndroid::AttachImeAdapter(JNIEnv* env, jobject java_object) {
 166   java_ime_adapter_ = AttachCurrentThread()->NewGlobalRef(java_object);
 167 }
 168
 169 void ImeAdapterAndroid::CancelComposition() {
 170   Java_ImeAdapter_cancelComposition(AttachCurrentThread(), java_ime_adapter_);
 171 }
 172
 173 void ImeAdapterAndroid::ReplaceText(JNIEnv* env, jobject, jstring text) {
 174   RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(
 175       rwhva_->GetRenderWidgetHost());
 176   if (!rwhi)
 177     return;
 178
 179   string16 text16 = ConvertJavaStringToUTF16(env, text);
 180   rwhi->Send(new ViewMsg_ReplaceAll(rwhi->GetRoutingID(), text16));
 181 }
 182
 183 void ImeAdapterAndroid::ClearFocus(JNIEnv* env, jobject) {
 184   RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(
 185       rwhva_->GetRenderWidgetHost());
 186   if (!rwhi)
 187     return;
 188
 189   rwhi->Send(new ViewMsg_ClearFocusedNode(rwhi->GetRoutingID()));
 190 }
 191
 192 void ImeAdapterAndroid::SetEditableSelectionOffsets(JNIEnv*, jobject,
 193                                                     int start, int end) {
 194   RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(
 195       rwhva_->GetRenderWidgetHost());
 196   if (!rwhi)
 197     return;
 198
 199   rwhi->Send(new ViewMsg_SetEditableSelectionOffsets(rwhi->GetRoutingID(),
 200                                                      start, end));
 201 }
 202
 203 void ImeAdapterAndroid::SetComposingRegion(JNIEnv*, jobject,
 204                                            int start, int end) {
 205   RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(
 206       rwhva_->GetRenderWidgetHost());
 207   if (!rwhi)
 208     return;
 209
 210   std::vector<WebKit::WebCompositionUnderline> underlines;
 211   underlines.push_back(
 212       WebKit::WebCompositionUnderline(0, end - start, SK_ColorBLACK, false));
 213
 214   rwhi->Send(new ViewMsg_SetCompositionFromExistingText(
 215       rwhi->GetRoutingID(), start, end, underlines));
 216 }
 217
 218 void ImeAdapterAndroid::DeleteSurroundingText(JNIEnv*, jobject,
 219                                               int before, int after) {
 220   RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(
 221       rwhva_->GetRenderWidgetHost());
 222   if (!rwhi)
 223     return;
 224
 225   rwhi->Send(new ViewMsg_ExtendSelectionAndDelete(rwhi->GetRoutingID(),
 226                                                   before, after));
 227 }
 228
 229 void ImeAdapterAndroid::Unselect(JNIEnv* env, jobject) {
 230   RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(
 231       rwhva_->GetRenderWidgetHost());
 232   if (!rwhi)
 233     return;
 234
 235   rwhi->Send(new ViewMsg_Unselect(rwhi->GetRoutingID()));
 236 }
 237
 238 void ImeAdapterAndroid::SelectAll(JNIEnv* env, jobject) {
 239   RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(
 240       rwhva_->GetRenderWidgetHost());
 241   if (!rwhi)
 242     return;
 243
 244   rwhi->Send(new ViewMsg_SelectAll(rwhi->GetRoutingID()));
 245 }
 246
 247 void ImeAdapterAndroid::Cut(JNIEnv* env, jobject) {
 248   RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(
 249       rwhva_->GetRenderWidgetHost());
 250   if (!rwhi)
 251     return;
 252
 253   rwhi->Send(new ViewMsg_Cut(rwhi->GetRoutingID()));
 254 }
 255
 256 void ImeAdapterAndroid::Copy(JNIEnv* env, jobject) {
 257   RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(
 258       rwhva_->GetRenderWidgetHost());
 259   if (!rwhi)
 260     return;
 261
 262   rwhi->Send(new ViewMsg_Copy(rwhi->GetRoutingID()));
 263 }
 264
 265 void ImeAdapterAndroid::Paste(JNIEnv* env, jobject) {
 266   RenderWidgetHostImpl* rwhi = RenderWidgetHostImpl::From(
 267       rwhva_->GetRenderWidgetHost());
 268   if (!rwhi)
 269     return;
 270
 271   rwhi->Send(new ViewMsg_Paste(rwhi->GetRoutingID()));
 272 }
 273
 274 }  // namespace content