Home | History | Annotate | Download | only in renderer 
      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
    107