In-te-grate hy-phen-ator to con-tent.

content/renderer/renderer_webkitplatformsupport_impl.cc

 // Copyright (c) 2012 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/renderer/renderer_webkitplatformsupport_impl.h"
 
 #include "base/command_line.h"
 #include "base/file_path.h"
 #include "base/file_util.h"
 #include "base/metrics/histogram.h"
 #include "base/platform_file.h"
 #include "base/shared_memory.h"
 #include "base/utf_string_conversions.h"
 #include "content/common/database_util.h"
 #include "content/common/fileapi/webblobregistry_impl.h"
 #include "content/common/fileapi/webfilesystem_impl.h"
 #include "content/common/file_utilities_messages.h"
 #include "content/common/indexed_db/proxy_webidbfactory_impl.h"
 #include "content/common/mime_registry_messages.h"
 #include "content/common/npobject_util.h"
 #include "content/common/view_messages.h"
 #include "content/common/webmessageportchannel_impl.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/gpu_info.h"
 #include "content/public/renderer/content_renderer_client.h"
 #include "content/renderer/dom_storage/webstoragenamespace_impl.h"
 #include "content/renderer/gamepad_shared_memory_reader.h"
+#include "content/renderer/hyphenator/hyphenator.h"
 #include "content/renderer/media/audio_hardware.h"
 #include "content/renderer/media/renderer_webaudiodevice_impl.h"
 #include "content/renderer/render_thread_impl.h"
 #include "content/renderer/render_view_impl.h"
 #include "content/renderer/renderer_clipboard_client.h"
 #include "content/renderer/websharedworkerrepository_impl.h"
 #include "googleurl/src/gurl.h"
 #include "ipc/ipc_sync_message_filter.h"
 #include "media/audio/audio_output_device.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/platform/WebBlobRegistry.h"
@@ skipping 692 matching lines @@
     bool enable) {
   bool was_enabled = g_sandbox_enabled;
   g_sandbox_enabled = enable;
   return was_enabled;
 }
 
 GpuChannelHostFactory*
 RendererWebKitPlatformSupportImpl::GetGpuChannelHostFactory() {
   return RenderThreadImpl::current();
 }
+
+//------------------------------------------------------------------------------
+
+bool RendererWebKitPlatformSupportImpl::canHyphenate(
+    const WebKit::WebString& locale) {
+  // Return false unless WebKit asks for US English dictionaries because WebKit
+  // can currently hyphenate only English words.
+  if (!locale.isEmpty() && !locale.equals("en-US"))
+    return false;
+
+  // Create a hyphenator object and attach it to the render thread so it can
+  // receive a dictionary file opened by a browser. (As of today, there are few
+  // pages that use the hyphens property and it is good to create this object
+  // only when WebKit finds a page that needs hyphenation.)

[tony, 2012/08/22 19:05:50]

Nit: I would remove the sentence in ()s.  I don't think you need to explain or
justify lazy initialization.

[Hironori Bono, 2012/08/27 06:57:28]

Done. Thanks for your suggestion.

+  if (!hyphenator_.get()) {
+    hyphenator_.reset(new content::Hyphenator(base::kInvalidPlatformFileValue));
+    if (!hyphenator_.get())
+      return false;
+    return hyphenator_->Attach(RenderThreadImpl::current(), locale);
+  }
+  return hyphenator_->CanHyphenate(locale);
+}
+
+size_t RendererWebKitPlatformSupportImpl::computeLastHyphenLocation(
+    const char16* characters,
+    size_t length,
+    size_t before_index,
+    const WebKit::WebString& locale) {
+  // Crash if WebKit calls this function when canHyphenate returns false.
+  DCHECK(locale.isEmpty() || locale.equals("en-US"));
+  DCHECK(hyphenator_.get());
+  return hyphenator_->ComputeLastHyphenLocation(string16(characters, length),
+                                                before_index);
+}