src/content/renderer/text_input_client_observer.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/renderer/text_input_client_observer.h"
   6
   7 #include "base/memory/scoped_ptr.h"
   8 #include "content/common/text_input_client_messages.h"
   9 #include "content/renderer/render_view_impl.h"
  10 #include "third_party/WebKit/public/platform/WebPoint.h"
  11 #include "third_party/WebKit/public/platform/WebRect.h"
  12 #include "third_party/WebKit/public/platform/WebString.h"
  13 #include "third_party/WebKit/public/web/mac/WebSubstringUtil.h"
  14 #include "third_party/WebKit/public/web/WebFrame.h"
  15 #include "third_party/WebKit/public/web/WebView.h"
  16 #include "ui/gfx/rect.h"
  17
  18 namespace content {
  19
  20 TextInputClientObserver::TextInputClientObserver(RenderViewImpl* render_view)
  21     : RenderViewObserver(render_view),
  22       render_view_impl_(render_view) {
  23 }
  24
  25 TextInputClientObserver::~TextInputClientObserver() {
  26 }
  27
  28 bool TextInputClientObserver::OnMessageReceived(const IPC::Message& message) {
  29   bool handled = true;
  30   IPC_BEGIN_MESSAGE_MAP(TextInputClientObserver, message)
  31     IPC_MESSAGE_HANDLER(TextInputClientMsg_CharacterIndexForPoint,
  32                         OnCharacterIndexForPoint)
  33     IPC_MESSAGE_HANDLER(TextInputClientMsg_FirstRectForCharacterRange,
  34                         OnFirstRectForCharacterRange)
  35     IPC_MESSAGE_HANDLER(TextInputClientMsg_StringForRange, OnStringForRange)
  36     IPC_MESSAGE_UNHANDLED(handled = false)
  37   IPC_END_MESSAGE_MAP()
  38   return handled;
  39 }
  40
  41 WebKit::WebView* TextInputClientObserver::webview() {
  42   return render_view()->GetWebView();
  43 }
  44
  45 void TextInputClientObserver::OnCharacterIndexForPoint(gfx::Point point) {
  46   WebKit::WebPoint web_point(point);
  47   size_t index = webview()->focusedFrame()->characterIndexForPoint(web_point);
  48   Send(new TextInputClientReplyMsg_GotCharacterIndexForPoint(routing_id(),
  49       index));
  50 }
  51
  52 void TextInputClientObserver::OnFirstRectForCharacterRange(gfx::Range range) {
  53   gfx::Rect rect;
  54 #if defined(ENABLE_PLUGINS)
  55   if (!render_view_impl_->GetPepperCaretBounds(&rect))
  56 #endif
  57   {
  58     WebKit::WebFrame* frame = webview()->focusedFrame();
  59     if (frame) {
  60       WebKit::WebRect web_rect;
  61       frame->firstRectForCharacterRange(range.start(), range.length(),
  62                                         web_rect);
  63       rect = web_rect;
  64     }
  65   }
  66   Send(new TextInputClientReplyMsg_GotFirstRectForRange(routing_id(), rect));
  67 }
  68
  69 void TextInputClientObserver::OnStringForRange(gfx::Range range) {
  70 #if defined(OS_MACOSX)
  71   NSAttributedString* string = nil;
  72   WebKit::WebFrame* frame = webview()->focusedFrame();
  73   if (frame) {
  74     string = WebKit::WebSubstringUtil::attributedSubstringInRange(
  75         frame, range.start(), range.length());
  76   }
  77   scoped_ptr<const mac::AttributedStringCoder::EncodedString> encoded(
  78       mac::AttributedStringCoder::Encode(string));
  79   Send(new TextInputClientReplyMsg_GotStringForRange(routing_id(),
  80       *encoded.get()));
  81 #else
  82   NOTIMPLEMENTED();
  83 #endif
  84 }
  85
  86 }  // namespace content