Help: Provide native WebView backend on Mac

Run Qt Creator with environment variable QTC_HELPVIEWER_BACKEND to
* 'native' to get the WebView based one on Mac
* 'textbrowser' to get the QTextBrowser based one

Defaults to use QWebView if QtWebKit is available, or QTextBrowser if
not, like before.

Change-Id: If0660782b18ff3d89301fa7bcaf4e2e2fb69627d
Reviewed-by: Eike Ziller <eike.ziller@digia.com>

1 files changed, 23 insertions, 1 deletions

diff --git a/src/plugins/help/localhelpmanager.cpp b/src/plugins/help/localhelpmanager.cpp
index 9bce86ce87d..424bdbe52f4 100644
--- a/src/plugins/help/localhelpmanager.cpp
+++ b/src/plugins/help/localhelpmanager.cpp
@@ -29,7 +29,8 @@
 
 #include "localhelpmanager.h"
 
-#include <bookmarkmanager.h>
+#include "bookmarkmanager.h"
+#include "helpconstants.h"
 
 #include <app/app_version.h>
 #include <coreplugin/helpmanager.h>
@@ -40,6 +41,8 @@
 
 using namespace Help::Internal;
 
+static LocalHelpManager *m_instance = 0;
+
 QMutex LocalHelpManager::m_guiMutex;
 QHelpEngine* LocalHelpManager::m_guiEngine = 0;
 
@@ -51,6 +54,7 @@ LocalHelpManager::LocalHelpManager(QObject *parent)
     , m_guiNeedsSetup(true)
     , m_needsCollectionFile(true)
 {
+    m_instance = this;
 }
 
 LocalHelpManager::~LocalHelpManager()
@@ -65,6 +69,11 @@ LocalHelpManager::~LocalHelpManager()
     m_guiEngine = 0;
 }
 
+LocalHelpManager *LocalHelpManager::instance()
+{
+    return m_instance;
+}
+
 void LocalHelpManager::setupGuiHelpEngine()
 {
     if (m_needsCollectionFile) {
@@ -110,3 +119,16 @@ BookmarkManager& LocalHelpManager::bookmarkManager()
     }
     return *m_bookmarkManager;
 }
+
+QVariant LocalHelpManager::engineFontSettings()
+{
+    return helpEngine().customValue(Constants::FontKey, QVariant());
+}
+
+QByteArray LocalHelpManager::helpData(const QUrl &url)
+{
+    const QHelpEngineCore &engine = helpEngine();
+
+    return engine.findFile(url).isValid() ? engine.fileData(url)
+            : tr("Could not load \"%1\".").arg(url.toString()).toUtf8();
+}