optimization: don't try to show the meta information if the widget is invisible

svn path=/trunk/KDE/kdebase/apps/; revision=661864

2 files changed, 14 insertions, 0 deletions

diff --git a/src/infosidebarpage.cpp b/src/infosidebarpage.cpp
index 530d1fb30..d900945e8 100644
--- a/src/infosidebarpage.cpp
+++ b/src/infosidebarpage.cpp
@@ -130,6 +130,12 @@ void InfoSidebarPage::setSelection(const KFileItemList& selection)
     showItemInfo();
 }
 
+void InfoSidebarPage::showEvent(QShowEvent* event)
+{
+    SidebarPage::showEvent(event);
+    showItemInfo();
+}
+
 void InfoSidebarPage::requestDelayedItemInfo(const KUrl& url)
 {
     cancelRequest();
@@ -143,6 +149,10 @@ void InfoSidebarPage::requestDelayedItemInfo(const KUrl& url)
 
 void InfoSidebarPage::showItemInfo()
 {
+    if (!isVisible()) {
+        return;
+    }
+
     cancelRequest();
 
     const KFileItemList& selectedItems = selection();
diff --git a/src/infosidebarpage.h b/src/infosidebarpage.h
index ffa18d497..2a0f2ead7 100644
--- a/src/infosidebarpage.h
+++ b/src/infosidebarpage.h
@@ -63,6 +63,10 @@ public slots:
     virtual void setUrl(const KUrl& url);
     virtual void setSelection(const KFileItemList& selection);
 
+protected:
+    /** @see QWidget::showEvent() */
+    virtual void showEvent(QShowEvent* event);
+
 private slots:
     /**
      * Does a delayed request of information for the item of the given Url and