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, 30 insertions, 0 deletions

diff --git a/src/core/web_engine_library_info.cpp b/src/core/web_engine_library_info.cpp
index aae86dce8..ee8174af7 100644
--- a/src/core/web_engine_library_info.cpp
+++ b/src/core/web_engine_library_info.cpp
@@ -205,6 +205,32 @@ QString localesPath()
 #endif
 }
 
+#if defined(ENABLE_SPELLCHECK)
+QString dictionariesPath()
+{
+#if defined(OS_MACOSX) && defined(QT_MAC_FRAMEWORK_BUILD)
+    return getResourcesPath(frameworkBundle()) % QLatin1String("/qtwebengine_dictionaries");
+#else
+    static bool initialized = false;
+    static QString potentialDictionariesPath = QLibraryInfo::location(QLibraryInfo::DataPath) % QDir::separator() % QLatin1String("qtwebengine_dictionaries");
+
+    if (!initialized) {
+        initialized = true;
+        if (!QFileInfo::exists(potentialDictionariesPath)) {
+            qWarning("Installed Qt WebEngine dictionaries directory not found at location %s. Trying application directory...", qPrintable(potentialDictionariesPath));
+            potentialDictionariesPath = QCoreApplication::applicationDirPath() % QDir::separator() % QLatin1String("qtwebengine_dictionaries");
+        }
+        if (!QFileInfo::exists(potentialDictionariesPath)) {
+            qWarning("Qt WebEngine dictionaries directory not found at location %s. Trying fallback directory... Spellcheck MAY NOT work.", qPrintable(potentialDictionariesPath));
+            potentialDictionariesPath = fallbackDir();
+        }
+    }
+
+    return potentialDictionariesPath;
+#endif
+}
+#endif // ENABLE_SPELLCHECK
+
 QString icuDataPath()
 {
 #if defined(OS_MACOSX) && defined(QT_MAC_FRAMEWORK_BUILD)
@@ -292,6 +318,10 @@ base::FilePath WebEngineLibraryInfo::getPath(int key)
         return toFilePath(pluginsPath());
     case ui::DIR_LOCALES:
         return toFilePath(localesPath());
+#if defined(ENABLE_SPELLCHECK)
+    case base::DIR_APP_DICTIONARIES:
+        return toFilePath(dictionariesPath());
+#endif
     default:
         // Note: the path system expects this function to override the default
         // behavior. So no need to log an error if we don't support a given