[InformationPanel] Hide the video when the preview is disabled, avoid computing the preview when it is disabled

Summary:
Bug symptom : {F6698879}

Fix the bugs and allow to avoid launching a PreviewJob with all files even when the preview is disabled.

Test Plan:
 # In dolphin with an information panel with preview on
 # launch the video preview
 # Disable the preview

  ->bug 1: the video player control is still visible (this bug fix this)

 # re-enable preview

 -> bug 2: the video stays visible and the preview is displayed above (this bug fix this)

Reviewers: #dolphin, elvisangelaccio, ngraham

Reviewed By: #dolphin, elvisangelaccio, ngraham

Subscribers: ngraham, kfm-devel

Tags: #dolphin

Differential Revision: https://phabricator.kde.org/D19844

1 files changed, 7 insertions, 4 deletions

diff --git a/src/panels/information/informationpanelcontent.h b/src/panels/information/informationpanelcontent.h
index a80775aaa..83fb3d80b 100644
--- a/src/panels/information/informationpanelcontent.h
+++ b/src/panels/information/informationpanelcontent.h
@@ -68,21 +68,24 @@ public:
     void showItem(const KFileItem& item);
 
     /**
-     * Shows the meta information for the items \p items.
+     * Shows the meta information for the items \p items and its preview
      */
     void showItems(const KFileItemList& items);
 
-    void setPreviewVisible(bool visible);
-
     KFileItemList items();
 
+    /**
+     * Refreshes the preview display, hiding it if needed
+     */
+    void refreshPreview();
+
 signals:
     void urlActivated( const QUrl& url );
 
 public slots:
     /**
      * Is invoked after the file meta data configuration dialog has been
-     * closed and refreshes the visibility of the meta data.
+     * closed and refreshes the displayed meta data by the panel.
      */
     void refreshMetaData();