QmlPreview: Register previewAction properly

To make Alt+p shortcut for live preview work, it must be registered
to ActionManager. We use global context for this action as it should
work regardless of which view is active.

Shortcut is now also available in Settings/Environment/Keyboard, since
it is properly registered.

Fixes: QDS-9229
Change-Id: Iee9671acd58f264bdb7b035d0ff1a343bcbd223e
Reviewed-by: Thomas Hartmann <thomas.hartmann@qt.io>

src/plugins/qmldesigner/qmlpreviewplugin/qmlpreviewplugin.cpp

@@ -19,6 +19,9 @@
 #include <utils/qtcassert.h>
 #include <utils/utilsicons.h>
 
+#include <coreplugin/actionmanager/actionmanager.h>
+#include <coreplugin/icore.h>
+
 #include <projectexplorer/projectexplorer.h>
 #include <projectexplorer/runconfiguration.h>
 #include <projectexplorer/runcontrol.h>
@@ -61,6 +64,22 @@ QmlPreviewWidgetPlugin::QmlPreviewWidgetPlugin()
 
     m_previewToggleAction = previewAction->action();
 
+    Core::Context globalContext;
+    auto registerCommand = [&globalContext](ActionInterface *action){
+        const QString id = QStringLiteral("QmlPreview.%1").arg(QString::fromLatin1(action->menuId()));
+        Core::Command *cmd = Core::ActionManager::registerAction(action->action(),
+                                                                 id.toLatin1().constData(),
+                                                                 globalContext);
+
+        cmd->setDefaultKeySequence(action->action()->shortcut());
+        cmd->setDescription(action->action()->toolTip());
+
+        action->action()->setToolTip(cmd->action()->toolTip());
+        action->action()->setShortcut(cmd->action()->shortcut());
+    };
+    // Only register previewAction as others don't have keyboard shortcuts for them
+    registerCommand(previewAction);
+
     if (s_previewPlugin) {
         auto fpsAction = new FpsAction;
         designerActionManager.addDesignerAction(fpsAction);