Add spell checker support

Integrate chromium spell checker:
* add spellchecker and dependencies to build
* underline misspelled words in html text areas
* right-click context menu shows up to 4 options to
  correct the misspelled word
* toggle spell check from context menu
* add new qml and widget api calls to qwebengineprofile
  to enable/disable spell check, select spell check language,
  get list of supported languages/dictionaries
* register new qml spell check properties for QtWebEngine 1.3
* CONFIG+="no_spellcheck" to remove spellcheck support

Change-Id: Ie61434ab9493597d7759a6f33794f6859c4e3a4c
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@theqtcompany.com>

1 files changed, 16 insertions, 1 deletions

diff --git a/src/core/web_contents_view_qt.cpp b/src/core/web_contents_view_qt.cpp
index 926e159df..9614aa0f8 100644
--- a/src/core/web_contents_view_qt.cpp
+++ b/src/core/web_contents_view_qt.cpp
@@ -39,7 +39,7 @@
 
 #include "web_contents_view_qt.h"
 
-#include "browser_context_qt.h"
+#include "browser_context_adapter.h"
 #include "content_browser_client_qt.h"
 #include "render_widget_host_view_qt_delegate.h"
 #include "type_conversion.h"
@@ -162,12 +162,27 @@ static WebEngineContextMenuData fromParams(const content::ContextMenuParams &par
     ret.hasImageContent = params.has_image_contents;
     ret.mediaFlags = params.media_flags;
     ret.suggestedFileName = toQt(params.suggested_filename.data());
+#if defined(ENABLE_SPELLCHECK)
+    ret.isEditable = params.is_editable;
+    ret.misspelledWord = toQt(params.misspelled_word);
+    ret.spellCheckerSuggestions = fromVector(params.dictionary_suggestions);
+#endif
     return ret;
 }
 
 void WebContentsViewQt::ShowContextMenu(content::RenderFrameHost *, const content::ContextMenuParams &params)
 {
     WebEngineContextMenuData contextMenuData(fromParams(params));
+#if defined(ENABLE_SPELLCHECK)
+    // Do not use params.spellcheck_enabled, since it is never
+    // correctly initialized for chrome asynchronous spellchecking.
+    // Even fixing the initialization in ContextMenuClientImpl::showContextMenu
+    // will not work. By default SpellCheck::spellcheck_enabled_
+    // must be initialized to true due to the way how the initialization sequence
+    // in SpellCheck works ie. typing the first word triggers the creation
+    // of the SpellcheckService. Use user preference store instead.
+    contextMenuData.isSpellCheckerEnabled = m_client->browserContextAdapter()->isSpellCheckEnabled();
+#endif
     m_client->contextMenuRequested(contextMenuData);
 }