Reland "Move TextInputController from CppBoundClass to gin::Wrappable."

content/shell/renderer/test_runner/text_input_controller.cc

+// Copyright 2014 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/shell/renderer/test_runner/text_input_controller.h"
+
+#include "gin/arguments.h"
+#include "gin/handle.h"
+#include "gin/object_template_builder.h"
+#include "gin/wrappable.h"
+#include "third_party/WebKit/public/web/WebCompositionUnderline.h"
+#include "third_party/WebKit/public/web/WebFrame.h"
+#include "third_party/WebKit/public/web/WebInputEvent.h"
+#include "third_party/WebKit/public/web/WebKit.h"
+#include "third_party/WebKit/public/web/WebRange.h"
+#include "third_party/WebKit/public/web/WebView.h"
+#include "v8/include/v8.h"
+
+namespace content {
+
+class TextInputControllerBindings
+    : public gin::Wrappable<TextInputControllerBindings> {
+ public:
+  static gin::WrapperInfo kWrapperInfo;
+
+  static void Install(base::WeakPtr<TextInputController> controller,
+                      blink::WebFrame* frame);
+
+ private:
+  explicit TextInputControllerBindings(
+      base::WeakPtr<TextInputController> controller);
+  virtual ~TextInputControllerBindings();
+
+  // gin::Wrappable:
+  virtual gin::ObjectTemplateBuilder GetObjectTemplateBuilder(
+      v8::Isolate* isolate) OVERRIDE;
+
+  void InsertText(const std::string& text);
+  void UnmarkText();
+  void DoCommand(const std::string& text);
+  void SetMarkedText(const std::string& text, int start, int length);
+  bool HasMarkedText();
+  std::vector<int> MarkedRange();
+  std::vector<int> SelectedRange();
+  std::vector<int> FirstRectForCharacterRange(unsigned location,
+                                              unsigned length);
+  void SetComposition(const std::string& text);
+
+  base::WeakPtr<TextInputController> controller_;
+
+  DISALLOW_COPY_AND_ASSIGN(TextInputControllerBindings);
+};
+
+gin::WrapperInfo TextInputControllerBindings::kWrapperInfo = {
+    gin::kEmbedderNativeGin};
+
+// static
+void TextInputControllerBindings::Install(
+    base::WeakPtr<TextInputController> controller,
+    blink::WebFrame* frame) {
+  v8::Isolate* isolate = blink::mainThreadIsolate();
+  v8::HandleScope handle_scope(isolate);
+  v8::Handle<v8::Context> context = frame->mainWorldScriptContext();
+  if (context.IsEmpty())
+    return;
+
+  v8::Context::Scope context_scope(context);
+
+  gin::Handle<TextInputControllerBindings> bindings =
+      gin::CreateHandle(isolate, new TextInputControllerBindings(controller));
+  v8::Handle<v8::Object> global = context->Global();
+  global->Set(gin::StringToV8(isolate, "textInputController"), bindings.ToV8());
+}
+
+TextInputControllerBindings::TextInputControllerBindings(
+    base::WeakPtr<TextInputController> controller)
+    : controller_(controller) {}
+
+TextInputControllerBindings::~TextInputControllerBindings() {}
+
+gin::ObjectTemplateBuilder
+TextInputControllerBindings::GetObjectTemplateBuilder(v8::Isolate* isolate) {
+  return gin::Wrappable<TextInputControllerBindings>::GetObjectTemplateBuilder(
+             isolate)
+      .SetMethod("insertText", &TextInputControllerBindings::InsertText)
+      .SetMethod("unmarkText", &TextInputControllerBindings::UnmarkText)
+      .SetMethod("doCommand", &TextInputControllerBindings::DoCommand)
+      .SetMethod("setMarkedText", &TextInputControllerBindings::SetMarkedText)
+      .SetMethod("hasMarkedText", &TextInputControllerBindings::HasMarkedText)
+      .SetMethod("markedRange", &TextInputControllerBindings::MarkedRange)
+      .SetMethod("selectedRange", &TextInputControllerBindings::SelectedRange)
+      .SetMethod("firstRectForCharacterRange",
+                 &TextInputControllerBindings::FirstRectForCharacterRange)
+      .SetMethod("setComposition",
+                 &TextInputControllerBindings::SetComposition);
+}
+
+void TextInputControllerBindings::InsertText(const std::string& text) {
+  if (controller_)
+    controller_->InsertText(text);
+}
+
+void TextInputControllerBindings::UnmarkText() {
+  if (controller_)
+    controller_->UnmarkText();
+}
+
+void TextInputControllerBindings::DoCommand(const std::string& text) {
+  if (controller_)
+    controller_->DoCommand(text);
+}
+
+void TextInputControllerBindings::SetMarkedText(const std::string& text,
+                                                int start,
+                                                int length) {
+  if (controller_)
+    controller_->SetMarkedText(text, start, length);
+}
+
+bool TextInputControllerBindings::HasMarkedText() {
+  return controller_ ? controller_->HasMarkedText() : false;
+}
+
+std::vector<int> TextInputControllerBindings::MarkedRange() {
+  return controller_ ? controller_->MarkedRange() : std::vector<int>();
+}
+
+std::vector<int> TextInputControllerBindings::SelectedRange() {
+  return controller_ ? controller_->SelectedRange() : std::vector<int>();
+}
+
+std::vector<int> TextInputControllerBindings::FirstRectForCharacterRange(
+    unsigned location,
+    unsigned length) {
+  return controller_ ? controller_->FirstRectForCharacterRange(location, length)
+                     : std::vector<int>();
+}
+
+void TextInputControllerBindings::SetComposition(const std::string& text) {
+  if (controller_)
+    controller_->SetComposition(text);
+}
+
+// TextInputController ---------------------------------------------------------
+
+TextInputController::TextInputController()
+    : view_(NULL), weak_factory_(this) {}
+
+TextInputController::~TextInputController() {}
+
+void TextInputController::Install(blink::WebFrame* frame) {
+  TextInputControllerBindings::Install(weak_factory_.GetWeakPtr(), frame);
+}
+
+void TextInputController::SetWebView(blink::WebView* view) {
+  view_ = view;
+}
+
+void TextInputController::InsertText(const std::string& text) {
+  view_->confirmComposition(blink::WebString::fromUTF8(text));
+}
+
+void TextInputController::UnmarkText() {
+  view_->confirmComposition();
+}
+
+void TextInputController::DoCommand(const std::string& text) {
+  view_->mainFrame()->executeCommand(blink::WebString::fromUTF8(text));
+}
+
+void TextInputController::SetMarkedText(const std::string& text,
+                                        int start,
+                                        int length) {
+  blink::WebString web_text(blink::WebString::fromUTF8(text));
+
+  // Split underline into up to 3 elements (before, selection, and after).
+  std::vector<blink::WebCompositionUnderline> underlines;
+  blink::WebCompositionUnderline underline;
+  if (!start) {
+    underline.endOffset = length;
+  } else {
+    underline.endOffset = start;
+    underlines.push_back(underline);
+    underline.startOffset = start;
+    underline.endOffset = start + length;
+  }
+  underline.thick = true;
+  underlines.push_back(underline);
+  if (start + length < static_cast<int>(web_text.length())) {
+    underline.startOffset = underline.endOffset;
+    underline.endOffset = web_text.length();
+    underline.thick = false;
+    underlines.push_back(underline);
+  }
+
+  view_->setComposition(web_text, underlines, start, start + length);
+}
+
+bool TextInputController::HasMarkedText() {
+  return view_->mainFrame()->hasMarkedText();
+}
+
+std::vector<int> TextInputController::MarkedRange() {
+  blink::WebRange range = view_->mainFrame()->markedRange();
+  std::vector<int> int_array(2);
+  int_array[0] = range.startOffset();
+  int_array[1] = range.endOffset();
+
+  return int_array;
+}
+
+std::vector<int> TextInputController::SelectedRange() {
+  blink::WebRange range = view_->mainFrame()->selectionRange();
+  std::vector<int> int_array(2);
+  int_array[0] = range.startOffset();
+  int_array[1] = range.endOffset();
+
+  return int_array;
+}
+
+std::vector<int> TextInputController::FirstRectForCharacterRange(
+    unsigned location,
+    unsigned length) {
+  blink::WebRect rect;
+  if (!view_->focusedFrame()->firstRectForCharacterRange(location, length, rect))
+    return std::vector<int>();
+
+  std::vector<int> int_array(4);
+  int_array[0] = rect.x;
+  int_array[1] = rect.y;
+  int_array[2] = rect.width;
+  int_array[3] = rect.height;
+
+  return int_array;
+}
+
+void TextInputController::SetComposition(const std::string& text) {
+  // Sends a keydown event with key code = 0xE5 to emulate input method
+  // behavior.
+  blink::WebKeyboardEvent key_down;
+  key_down.type = blink::WebInputEvent::RawKeyDown;
+  key_down.modifiers = 0;
+  key_down.windowsKeyCode = 0xE5;  // VKEY_PROCESSKEY
+  key_down.setKeyIdentifierFromWindowsKeyCode();
+  view_->handleInputEvent(key_down);
+
+  blink::WebVector<blink::WebCompositionUnderline> underlines;
+  blink::WebString web_text(blink::WebString::fromUTF8(text));
+  view_->setComposition(web_text, underlines, 0, web_text.length());
+}
+
+}  // namespace content