Added clearing sources of any UBGraphicsWidget.

Added new system util method: deleteFile.

src/board/UBBoardController.cpp

@@ -1802,6 +1802,7 @@ UBGraphicsWidgetItem *UBBoardController::addW3cWidget(const QUrl &pUrl, const QP
 
         QString struuid = UBStringUtils::toCanonicalUuid(uuid);
         QString snapshotPath = mActiveDocument->persistencePath() +  "/" + UBPersistenceManager::widgetDirectory + "/" + struuid + ".png";
+        w3cWidgetItem->setSnapshotPath(QUrl::fromLocalFile(snapshotPath));
         UBGraphicsWidgetItem *tmpItem = dynamic_cast<UBGraphicsWidgetItem*>(w3cWidgetItem);
         if (tmpItem)
            tmpItem->widgetWebView()->takeSnapshot().save(snapshotPath, "PNG");

src/domain/UBGraphicsMediaItem.cpp

@@ -25,6 +25,8 @@
 
 #include "core/memcheck.h"
 
+#include "frameworks/UBFileSystemUtils.h"
+
 bool UBGraphicsMediaItem::sIsMutedByDefault = false;
 
 UBGraphicsMediaItem::UBGraphicsMediaItem(const QUrl& pMediaFileUrl, QGraphicsItem *parent)
@@ -85,15 +87,11 @@ QVariant UBGraphicsMediaItem::itemChange(GraphicsItemChange change, const QVaria
 void UBGraphicsMediaItem::clearSource()
 {
     QString path = mediaFileUrl().path();
-
     //if path is absolute clean duplicated path string
     if (!path.contains(UBApplication::boardController->activeDocument()->persistencePath()))
         path = UBApplication::boardController->activeDocument()->persistencePath() + "/" + path;
 
-    QFile f(path);
-    f.setPermissions(path, QFile::ReadOwner | QFile::WriteOwner);
-    f.remove();
-
+    UBFileSystemUtils::deleteFile(path);
 }
 
 void UBGraphicsMediaItem::toggleMute()

src/domain/UBGraphicsWidgetItem.cpp

@@ -25,6 +25,7 @@
 #include "UBW3CWidget.h"
 #include "UBGraphicsScene.h"
 #include "UBAppleWidget.h"
+#include "frameworks/UBFileSystemUtils.h"
 
 #include "core/memcheck.h"
 
@@ -246,6 +247,13 @@ void UBGraphicsWidgetItem::removeScript()
         mWebKitWidget->page()->mainFrame()->evaluateJavaScript("if(widget && widget.onremove) { widget.onremove();}");
     }
 }
+
+void UBGraphicsWidgetItem::clearSource()
+{
+    UBFileSystemUtils::deleteDir(getOwnFolder().toLocalFile());
+    UBFileSystemUtils::deleteFile(getSnapshotPath().toLocalFile());
+}
+
 QString UBGraphicsWidgetItem::downloadUrl(const QString &fileUrl, const QString &extention)
 {
     return mUniboardAPI->downloadUrl(fileUrl, extention);

src/domain/UBGraphicsWidgetItem.h

@@ -70,9 +70,10 @@ class UBGraphicsWidgetItem : public UBGraphicsProxyWidget
 
         virtual void setOwnFolder(const QUrl &newFolder) {ownFolder = newFolder;}
         virtual QUrl getOwnFolder() const {return ownFolder;}
+        virtual void setSnapshotPath(const QUrl &newFilePath){SnapshotFile = newFilePath;}
+        virtual QUrl getSnapshotPath(){return SnapshotFile;}
 
-
-        virtual void clearSource(){;}
+        virtual void clearSource();
 
     protected:
 
@@ -95,6 +96,7 @@ class UBGraphicsWidgetItem : public UBGraphicsProxyWidget
         bool mShouldMoveWidget;
         UBWidgetUniboardAPI* mUniboardAPI;
         QUrl ownFolder;
+        QUrl SnapshotFile;
 };
 
 class UBGraphicsAppleWidgetItem : public UBGraphicsWidgetItem

src/frameworks/UBCoreGraphicsScene.cpp

@@ -19,6 +19,7 @@
 #include "domain/UBGraphicsAudioItem.h"
 #include "domain/UBGraphicsVideoItem.h"
 #include "domain/UBGraphicsMediaItem.h"
+#include "domain/UBGraphicsWidgetItem.h"
 
 UBCoreGraphicsScene::UBCoreGraphicsScene(QObject * parent)
     : QGraphicsScene ( parent  )
@@ -70,6 +71,9 @@ bool UBCoreGraphicsScene::deleteItem(QGraphicsItem* item)
         case UBGraphicsVideoItem::Type:
                 item_casted = dynamic_cast<UBGraphicsVideoItem*>(item);
                 break;
+        case UBGraphicsW3CWidgetItem::Type:
+                item_casted = dynamic_cast<UBGraphicsWidgetItem*>(item);
+                break;
         }
 
         if (0 != item_casted)

src/frameworks/UBFileSystemUtils.cpp

@@ -79,6 +79,13 @@ bool UBFileSystemUtils::copyFile(const QString &source, const QString &Destinati
     return QFile::copy(source, normalizedDestination);
 }
 
+bool UBFileSystemUtils::deleteFile(const QString &path)
+{
+    QFile f(path);
+    f.setPermissions(path, QFile::ReadOwner | QFile::WriteOwner);
+    return f.remove();
+}
+
 QString UBFileSystemUtils::defaultTempDirPath()
 {
     return QDesktopServices::storageLocation(QDesktopServices::TempLocation) + "/" + defaultTempDirName();

src/frameworks/UBFileSystemUtils.h

@@ -67,6 +67,7 @@ class UBFileSystemUtils
 
         static bool copyFile(const QString &source, const QString &Destination, bool overwrite = false);
         
+        static bool deleteFile(const QString &path);
         /**
          * Compress a source directory in a zip file.
          * @arg pDir the directory to add in zip