components/test_runner/text_input_controller.cc

   1 // Copyright 2014 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 "components/test_runner/text_input_controller.h"
   6
   7 #include "gin/arguments.h"
   8 #include "gin/handle.h"
   9 #include "gin/object_template_builder.h"
  10 #include "gin/wrappable.h"
  11 #include "third_party/WebKit/public/web/WebCompositionUnderline.h"
  12 #include "third_party/WebKit/public/web/WebFrame.h"
  13 #include "third_party/WebKit/public/web/WebInputEvent.h"
  14 #include "third_party/WebKit/public/web/WebKit.h"
  15 #include "third_party/WebKit/public/web/WebRange.h"
  16 #include "third_party/WebKit/public/web/WebView.h"
  17 #include "v8/include/v8.h"
  18
  19 namespace test_runner {
  20
  21 class TextInputControllerBindings
  22     : public gin::Wrappable<TextInputControllerBindings> {
  23  public:
  24   static gin::WrapperInfo kWrapperInfo;
  25
  26   static void Install(base::WeakPtr<TextInputController> controller,
  27                       blink::WebFrame* frame);
  28
  29  private:
  30   explicit TextInputControllerBindings(
  31       base::WeakPtr<TextInputController> controller);
  32   ~TextInputControllerBindings() override;
  33
  34   // gin::Wrappable:
  35   gin::ObjectTemplateBuilder GetObjectTemplateBuilder(
  36       v8::Isolate* isolate) override;
  37
  38   void InsertText(const std::string& text);
  39   void UnmarkText();
  40   void DoCommand(const std::string& text);
  41   void SetMarkedText(const std::string& text, int start, int length);
  42   bool HasMarkedText();
  43   std::vector<int> MarkedRange();
  44   std::vector<int> SelectedRange();
  45   std::vector<int> FirstRectForCharacterRange(unsigned location,
  46                                               unsigned length);
  47   void SetComposition(const std::string& text);
  48
  49   base::WeakPtr<TextInputController> controller_;
  50
  51   DISALLOW_COPY_AND_ASSIGN(TextInputControllerBindings);
  52 };
  53
  54 gin::WrapperInfo TextInputControllerBindings::kWrapperInfo = {
  55     gin::kEmbedderNativeGin};
  56
  57 // static
  58 void TextInputControllerBindings::Install(
  59     base::WeakPtr<TextInputController> controller,
  60     blink::WebFrame* frame) {
  61   v8::Isolate* isolate = blink::mainThreadIsolate();
  62   v8::HandleScope handle_scope(isolate);
  63   v8::Local<v8::Context> context = frame->mainWorldScriptContext();
  64   if (context.IsEmpty())
  65     return;
  66
  67   v8::Context::Scope context_scope(context);
  68
  69   gin::Handle<TextInputControllerBindings> bindings =
  70       gin::CreateHandle(isolate, new TextInputControllerBindings(controller));
  71   if (bindings.IsEmpty())
  72     return;
  73   v8::Local<v8::Object> global = context->Global();
  74   global->Set(gin::StringToV8(isolate, "textInputController"), bindings.ToV8());
  75 }
  76
  77 TextInputControllerBindings::TextInputControllerBindings(
  78     base::WeakPtr<TextInputController> controller)
  79     : controller_(controller) {}
  80
  81 TextInputControllerBindings::~TextInputControllerBindings() {}
  82
  83 gin::ObjectTemplateBuilder
  84 TextInputControllerBindings::GetObjectTemplateBuilder(v8::Isolate* isolate) {
  85   return gin::Wrappable<TextInputControllerBindings>::GetObjectTemplateBuilder(
  86              isolate)
  87       .SetMethod("insertText", &TextInputControllerBindings::InsertText)
  88       .SetMethod("unmarkText", &TextInputControllerBindings::UnmarkText)
  89       .SetMethod("doCommand", &TextInputControllerBindings::DoCommand)
  90       .SetMethod("setMarkedText", &TextInputControllerBindings::SetMarkedText)
  91       .SetMethod("hasMarkedText", &TextInputControllerBindings::HasMarkedText)
  92       .SetMethod("markedRange", &TextInputControllerBindings::MarkedRange)
  93       .SetMethod("selectedRange", &TextInputControllerBindings::SelectedRange)
  94       .SetMethod("firstRectForCharacterRange",
  95                  &TextInputControllerBindings::FirstRectForCharacterRange)
  96       .SetMethod("setComposition",
  97                  &TextInputControllerBindings::SetComposition);
  98 }
  99
 100 void TextInputControllerBindings::InsertText(const std::string& text) {
 101   if (controller_)
 102     controller_->InsertText(text);
 103 }
 104
 105 void TextInputControllerBindings::UnmarkText() {
 106   if (controller_)
 107     controller_->UnmarkText();
 108 }
 109
 110 void TextInputControllerBindings::DoCommand(const std::string& text) {
 111   if (controller_)
 112     controller_->DoCommand(text);
 113 }
 114
 115 void TextInputControllerBindings::SetMarkedText(const std::string& text,
 116                                                 int start,
 117                                                 int length) {
 118   if (controller_)
 119     controller_->SetMarkedText(text, start, length);
 120 }
 121
 122 bool TextInputControllerBindings::HasMarkedText() {
 123   return controller_ ? controller_->HasMarkedText() : false;
 124 }
 125
 126 std::vector<int> TextInputControllerBindings::MarkedRange() {
 127   return controller_ ? controller_->MarkedRange() : std::vector<int>();
 128 }
 129
 130 std::vector<int> TextInputControllerBindings::SelectedRange() {
 131   return controller_ ? controller_->SelectedRange() : std::vector<int>();
 132 }
 133
 134 std::vector<int> TextInputControllerBindings::FirstRectForCharacterRange(
 135     unsigned location,
 136     unsigned length) {
 137   return controller_ ? controller_->FirstRectForCharacterRange(location, length)
 138                      : std::vector<int>();
 139 }
 140
 141 void TextInputControllerBindings::SetComposition(const std::string& text) {
 142   if (controller_)
 143     controller_->SetComposition(text);
 144 }
 145
 146 // TextInputController ---------------------------------------------------------
 147
 148 TextInputController::TextInputController()
 149     : view_(NULL), weak_factory_(this) {}
 150
 151 TextInputController::~TextInputController() {}
 152
 153 void TextInputController::Install(blink::WebFrame* frame) {
 154   TextInputControllerBindings::Install(weak_factory_.GetWeakPtr(), frame);
 155 }
 156
 157 void TextInputController::SetWebView(blink::WebView* view) {
 158   view_ = view;
 159 }
 160
 161 void TextInputController::InsertText(const std::string& text) {
 162   view_->confirmComposition(blink::WebString::fromUTF8(text));
 163 }
 164
 165 void TextInputController::UnmarkText() {
 166   view_->confirmComposition();
 167 }
 168
 169 void TextInputController::DoCommand(const std::string& text) {
 170   if (view_->mainFrame())
 171     view_->mainFrame()->executeCommand(blink::WebString::fromUTF8(text));
 172 }
 173
 174 void TextInputController::SetMarkedText(const std::string& text,
 175                                         int start,
 176                                         int length) {
 177   blink::WebString web_text(blink::WebString::fromUTF8(text));
 178
 179   // Split underline into up to 3 elements (before, selection, and after).
 180   std::vector<blink::WebCompositionUnderline> underlines;
 181   blink::WebCompositionUnderline underline;
 182   if (!start) {
 183     underline.endOffset = length;
 184   } else {
 185     underline.endOffset = start;
 186     underlines.push_back(underline);
 187     underline.startOffset = start;
 188     underline.endOffset = start + length;
 189   }
 190   underline.thick = true;
 191   underlines.push_back(underline);
 192   if (start + length < static_cast<int>(web_text.length())) {
 193     underline.startOffset = underline.endOffset;
 194     underline.endOffset = web_text.length();
 195     underline.thick = false;
 196     underlines.push_back(underline);
 197   }
 198
 199   view_->setComposition(web_text, underlines, start, start + length);
 200 }
 201
 202 bool TextInputController::HasMarkedText() {
 203   return view_->mainFrame() && view_->mainFrame()->hasMarkedText();
 204 }
 205
 206 std::vector<int> TextInputController::MarkedRange() {
 207   if (!view_->mainFrame())
 208     return std::vector<int>();
 209
 210   blink::WebRange range = view_->mainFrame()->markedRange();
 211   std::vector<int> int_array(2);
 212   int_array[0] = range.startOffset();
 213   int_array[1] = range.endOffset();
 214
 215   return int_array;
 216 }
 217
 218 std::vector<int> TextInputController::SelectedRange() {
 219   if (!view_->mainFrame())
 220     return std::vector<int>();
 221
 222   blink::WebRange range = view_->mainFrame()->selectionRange();
 223   std::vector<int> int_array(2);
 224   int_array[0] = range.startOffset();
 225   int_array[1] = range.endOffset();
 226
 227   return int_array;
 228 }
 229
 230 std::vector<int> TextInputController::FirstRectForCharacterRange(
 231     unsigned location,
 232     unsigned length) {
 233   blink::WebRect rect;
 234   if (!view_->focusedFrame() ||
 235       !view_->focusedFrame()->firstRectForCharacterRange(
 236           location, length, rect)) {
 237     return std::vector<int>();
 238   }
 239
 240   std::vector<int> int_array(4);
 241   int_array[0] = rect.x;
 242   int_array[1] = rect.y;
 243   int_array[2] = rect.width;
 244   int_array[3] = rect.height;
 245
 246   return int_array;
 247 }
 248
 249 void TextInputController::SetComposition(const std::string& text) {
 250   // Sends a keydown event with key code = 0xE5 to emulate input method
 251   // behavior.
 252   blink::WebKeyboardEvent key_down;
 253   key_down.type = blink::WebInputEvent::RawKeyDown;
 254   key_down.modifiers = 0;
 255   key_down.windowsKeyCode = 0xE5;  // VKEY_PROCESSKEY
 256   key_down.setKeyIdentifierFromWindowsKeyCode();
 257   view_->handleInputEvent(key_down);
 258
 259   blink::WebVector<blink::WebCompositionUnderline> underlines;
 260   blink::WebString web_text(blink::WebString::fromUTF8(text));
 261   view_->setComposition(web_text, underlines, 0, web_text.length());
 262 }
 263
 264 }  // namespace test_runner