Add spell checking support (issue #137).

This includes:
- Red underline of misspelled words in html text areas.
- Right-click context menu options to correct the misspelled word.
- New CefBrowser::ReplaceMisspelling method for accepting a word replacement.
- Methods added to CefContextMenuParams for retrieving spelling-related information.
- Uses the unified text checker when auto-correct is not enabled to match Google Chrome behavior.
- On Windows and Linux a hunspell dictionary file will be downloaded to the "<cache_path>/Dictionaries" directory as needed, or used from the <cache_path> directory if the file already exists there. The dictionary file will be downloaded from http://cache.pack.google.com/edgedl/chrome/dict/<LANG>-3-0.bdic where <LANG> is the language abbreviation.
- On OS X the spell checking implementation will use the system NSSpellChecker implementation.

The following command-line flags have been added:
--disable-spell-checking => Disable spell-checking support (no red underline, no dictionary file download, etc).
--enable-spelling-auto-correct => Automatically correct common misspellings while typing (like 'omre' to 'more' on Windows/Linux or 'ehlo' to 'helo' on OS X).
--enable-spelling-service => Enable use of the remote Google spelling service (this requires Google API keys).
--override-spell-check-lang=<LANG> => Use the specified dictionary language <LANG> instead of the language specified in the locales.pak file. To see the default/supported dictionary languages: https://code.google.com/p/chromium/codesearch#search/&q=IDS_SPELLCHECK_DICTIONARY%20xtb&sq=package:chromium


git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@1859 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

libcef_dll/cpptoc/browser_host_cpptoc.cc

@@ -411,6 +411,23 @@ int CEF_CALLBACK browser_host_is_mouse_cursor_change_disabled(
   return _retval;
 }
 
+void CEF_CALLBACK browser_host_replace_misspelling(
+    struct _cef_browser_host_t* self, const cef_string_t* word) {
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  DCHECK(self);
+  if (!self)
+    return;
+  // Verify param: word; type: string_byref_const
+  DCHECK(word);
+  if (!word)
+    return;
+
+  // Execute
+  CefBrowserHostCppToC::Get(self)->ReplaceMisspelling(
+      CefString(word));
+}
+
 int CEF_CALLBACK browser_host_is_window_rendering_disabled(
     struct _cef_browser_host_t* self) {
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
@@ -782,6 +799,7 @@ CefBrowserHostCppToC::CefBrowserHostCppToC(CefBrowserHost* cls)
       browser_host_set_mouse_cursor_change_disabled;
   struct_.struct_.is_mouse_cursor_change_disabled =
       browser_host_is_mouse_cursor_change_disabled;
+  struct_.struct_.replace_misspelling = browser_host_replace_misspelling;
   struct_.struct_.is_window_rendering_disabled =
       browser_host_is_window_rendering_disabled;
   struct_.struct_.was_resized = browser_host_was_resized;

libcef_dll/cpptoc/context_menu_params_cpptoc.cc

@@ -11,6 +11,7 @@
 //
 
 #include "libcef_dll/cpptoc/context_menu_params_cpptoc.h"
+#include "libcef_dll/transfer_util.h"
 
 
 // MEMBER FUNCTIONS - Body may be edited by hand.
@@ -214,6 +215,66 @@ cef_string_userfree_t CEF_CALLBACK context_menu_params_get_selection_text(
   return _retval.DetachToUserFree();
 }
 
+cef_string_userfree_t CEF_CALLBACK context_menu_params_get_misspelled_word(
+    struct _cef_context_menu_params_t* self) {
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  DCHECK(self);
+  if (!self)
+    return NULL;
+
+  // Execute
+  CefString _retval = CefContextMenuParamsCppToC::Get(self)->GetMisspelledWord(
+      );
+
+  // Return type: string
+  return _retval.DetachToUserFree();
+}
+
+int CEF_CALLBACK context_menu_params_get_misspelling_hash(
+    struct _cef_context_menu_params_t* self) {
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  DCHECK(self);
+  if (!self)
+    return 0;
+
+  // Execute
+  int _retval = CefContextMenuParamsCppToC::Get(self)->GetMisspellingHash();
+
+  // Return type: simple
+  return _retval;
+}
+
+int CEF_CALLBACK context_menu_params_get_dictionary_suggestions(
+    struct _cef_context_menu_params_t* self, cef_string_list_t suggestions) {
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  DCHECK(self);
+  if (!self)
+    return 0;
+  // Verify param: suggestions; type: string_vec_byref
+  DCHECK(suggestions);
+  if (!suggestions)
+    return 0;
+
+  // Translate param: suggestions; type: string_vec_byref
+  std::vector<CefString> suggestionsList;
+  transfer_string_list_contents(suggestions, suggestionsList);
+
+  // Execute
+  bool _retval = CefContextMenuParamsCppToC::Get(
+      self)->GetDictionarySuggestions(
+      suggestionsList);
+
+  // Restore param: suggestions; type: string_vec_byref
+  cef_string_list_clear(suggestions);
+  transfer_string_list_contents(suggestionsList, suggestions);
+
+  // Return type: bool
+  return _retval;
+}
+
 int CEF_CALLBACK context_menu_params_is_editable(
     struct _cef_context_menu_params_t* self) {
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
@@ -229,6 +290,21 @@ int CEF_CALLBACK context_menu_params_is_editable(
   return _retval;
 }
 
+int CEF_CALLBACK context_menu_params_is_spell_check_enabled(
+    struct _cef_context_menu_params_t* self) {
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  DCHECK(self);
+  if (!self)
+    return 0;
+
+  // Execute
+  bool _retval = CefContextMenuParamsCppToC::Get(self)->IsSpellCheckEnabled();
+
+  // Return type: bool
+  return _retval;
+}
+
 cef_context_menu_edit_state_flags_t CEF_CALLBACK context_menu_params_get_edit_state_flags(
     struct _cef_context_menu_params_t* self) {
   // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
@@ -267,7 +343,14 @@ CefContextMenuParamsCppToC::CefContextMenuParamsCppToC(
   struct_.struct_.get_media_state_flags =
       context_menu_params_get_media_state_flags;
   struct_.struct_.get_selection_text = context_menu_params_get_selection_text;
+  struct_.struct_.get_misspelled_word = context_menu_params_get_misspelled_word;
+  struct_.struct_.get_misspelling_hash =
+      context_menu_params_get_misspelling_hash;
+  struct_.struct_.get_dictionary_suggestions =
+      context_menu_params_get_dictionary_suggestions;
   struct_.struct_.is_editable = context_menu_params_is_editable;
+  struct_.struct_.is_spell_check_enabled =
+      context_menu_params_is_spell_check_enabled;
   struct_.struct_.get_edit_state_flags =
       context_menu_params_get_edit_state_flags;
 }

libcef_dll/cpptoc/render_handler_cpptoc.cc

@@ -315,6 +315,23 @@ void CEF_CALLBACK render_handler_update_drag_cursor(
       operation);
 }
 
+void CEF_CALLBACK render_handler_on_scroll_offset_changed(
+    struct _cef_render_handler_t* self, cef_browser_t* browser) {
+  // AUTO-GENERATED CONTENT - DELETE THIS COMMENT BEFORE MODIFYING
+
+  DCHECK(self);
+  if (!self)
+    return;
+  // Verify param: browser; type: refptr_diff
+  DCHECK(browser);
+  if (!browser)
+    return;
+
+  // Execute
+  CefRenderHandlerCppToC::Get(self)->OnScrollOffsetChanged(
+      CefBrowserCToCpp::Wrap(browser));
+}
+
 
 // CONSTRUCTOR - Do not edit by hand.
 
@@ -331,6 +348,8 @@ CefRenderHandlerCppToC::CefRenderHandlerCppToC(CefRenderHandler* cls)
   struct_.struct_.on_cursor_change = render_handler_on_cursor_change;
   struct_.struct_.start_dragging = render_handler_start_dragging;
   struct_.struct_.update_drag_cursor = render_handler_update_drag_cursor;
+  struct_.struct_.on_scroll_offset_changed =
+      render_handler_on_scroll_offset_changed;
 }
 
 #ifndef NDEBUG