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/pepper/pepper_plugin_instance_impl.h"
  10 #include "content/renderer/render_view_impl.h"
  11 #include "third_party/WebKit/public/platform/WebPoint.h"
  12 #include "third_party/WebKit/public/platform/WebRect.h"
  13 #include "third_party/WebKit/public/platform/WebString.h"
  14 #include "third_party/WebKit/public/web/WebLocalFrame.h"
  15 #include "third_party/WebKit/public/web/WebView.h"
  16 #include "third_party/WebKit/public/web/mac/WebSubstringUtil.h"
  17 #include "ui/gfx/rect.h"
  18
  19 namespace content {
  20
  21 TextInputClientObserver::TextInputClientObserver(RenderViewImpl* render_view)
  22     : RenderViewObserver(render_view),
  23       render_view_impl_(render_view) {
  24 }
  25
  26 TextInputClientObserver::~TextInputClientObserver() {
  27 }
  28
  29 bool TextInputClientObserver::OnMessageReceived(const IPC::Message& message) {
  30   bool handled = true;
  31   IPC_BEGIN_MESSAGE_MAP(TextInputClientObserver, message)
  32     IPC_MESSAGE_HANDLER(TextInputClientMsg_StringAtPoint,
  33                         OnStringAtPoint)
  34     IPC_MESSAGE_HANDLER(TextInputClientMsg_CharacterIndexForPoint,
  35                         OnCharacterIndexForPoint)
  36     IPC_MESSAGE_HANDLER(TextInputClientMsg_FirstRectForCharacterRange,
  37                         OnFirstRectForCharacterRange)
  38     IPC_MESSAGE_HANDLER(TextInputClientMsg_StringForRange, OnStringForRange)
  39     IPC_MESSAGE_UNHANDLED(handled = false)
  40   IPC_END_MESSAGE_MAP()
  41   return handled;
  42 }
  43
  44 blink::WebView* TextInputClientObserver::webview() {
  45   return render_view()->GetWebView();
  46 }
  47
  48 void TextInputClientObserver::OnStringAtPoint(gfx::Point point) {
  49 #if defined(OS_MACOSX)
  50   blink::WebPoint baselinePoint;
  51   NSAttributedString* string = blink::WebSubstringUtil::attributedWordAtPoint(
  52       webview(), point, baselinePoint);
  53
  54   scoped_ptr<const mac::AttributedStringCoder::EncodedString> encoded(
  55       mac::AttributedStringCoder::Encode(string));
  56   Send(new TextInputClientReplyMsg_GotStringAtPoint(
  57       routing_id(), *encoded.get(), baselinePoint));
  58 #else
  59   NOTIMPLEMENTED();
  60 #endif
  61 }
  62
  63 void TextInputClientObserver::OnCharacterIndexForPoint(gfx::Point point) {
  64   blink::WebPoint web_point(point);
  65   size_t index = webview()->focusedFrame()->characterIndexForPoint(web_point);
  66   Send(new TextInputClientReplyMsg_GotCharacterIndexForPoint(routing_id(),
  67       index));
  68 }
  69
  70 void TextInputClientObserver::OnFirstRectForCharacterRange(gfx::Range range) {
  71   gfx::Rect rect;
  72 #if defined(ENABLE_PLUGINS)
  73   if (render_view_impl_->focused_pepper_plugin()) {
  74     rect = render_view_impl_->focused_pepper_plugin()->GetCaretBounds();
  75   } else
  76 #endif
  77   {
  78     blink::WebFrame* frame = webview()->focusedFrame();
  79     if (frame) {
  80       blink::WebRect web_rect;
  81       frame->firstRectForCharacterRange(range.start(), range.length(),
  82                                         web_rect);
  83       rect = web_rect;
  84     }
  85   }
  86   Send(new TextInputClientReplyMsg_GotFirstRectForRange(routing_id(), rect));
  87 }
  88
  89 void TextInputClientObserver::OnStringForRange(gfx::Range range) {
  90 #if defined(OS_MACOSX)
  91   NSAttributedString* string = nil;
  92   blink::WebLocalFrame* frame = webview()->focusedFrame()->toWebLocalFrame();
  93   if (frame) {
  94     string = blink::WebSubstringUtil::attributedSubstringInRange(
  95         frame, range.start(), range.length());
  96   }
  97   scoped_ptr<const mac::AttributedStringCoder::EncodedString> encoded(
  98       mac::AttributedStringCoder::Encode(string));
  99   Send(new TextInputClientReplyMsg_GotStringForRange(routing_id(),
 100       *encoded.get()));
 101 #else
 102   NOTIMPLEMENTED();
 103 #endif
 104 }
 105
 106 }  // namespace content