Minor changes.

[modules/hydro.git] / src / HYDROGUI / HYDROGUI_Operation.cxx

diff --git a/src/HYDROGUI/HYDROGUI_Operation.cxx b/src/HYDROGUI/HYDROGUI_Operation.cxx
index bdbd6fa05ffd1c86b4ea310a681dbf3f63b3ac1a..761083b8b64e90628ba81754c8d740b1d8119a6c 100644 (file)
--- a/src/HYDROGUI/HYDROGUI_Operation.cxx
+++ b/src/HYDROGUI/HYDROGUI_Operation.cxx
@@ -25,6 +25,8 @@
 #include "HYDROGUI_InputPanel.h"
 #include "HYDROGUI_Module.h"
 #include "HYDROGUI_Tool.h"
+#include "HYDROGUI_OCCDisplayer.h"
+#include "HYDROGUI_Shape.h"
 
 #include <HYDROData_Document.h>
 #include <HYDROData_Iterator.h>
@@ -42,7 +44,10 @@ HYDROGUI_Operation::HYDROGUI_Operation( HYDROGUI_Module* theModule )
 : LightApp_Operation(),
   myModule( theModule ),
   myPanel( 0 ),
-  myIsPrintErrorMessage( true )
+  myIsPrintErrorMessage( true ),
+  myIsTransactionOpened( false ),
+  myPreviewManager( 0 ),
+  myPreviewZLayer( -1 )
 {
   connect( this, SIGNAL( helpContextModule( const QString&, const QString&,
                                             const QString& ) ),
@@ -86,9 +91,72 @@ HYDROGUI_Module* HYDROGUI_Operation::module() const
   return myModule;
 }
 
+/**
+  * Returns Z layer of the operation preview.
+   \ returns a layer position
+ */
+int HYDROGUI_Operation::getPreviewZLayer() const
+{
+  return myPreviewZLayer;
+}
+
+/**
+ * Update Z layer for the operation preview.
+   \param theLayer a layer position
+ */
+void HYDROGUI_Operation::updatePreviewZLayer( int theLayer )
+{
+  setPreviewZLayer( theLayer );
+
+  HYDROGUI_Shape* aPreview = getPreviewShape();
+  if ( aPreview )
+    aPreview->setZLayer( getPreviewZLayer() );
+}
+
+/**
+ * Set Z layer for the operation preview.
+ \param theLayer a layer position
+ */
+void HYDROGUI_Operation::setPreviewZLayer( int theLayer )
+{
+  if ( theLayer != myPreviewZLayer )
+    myPreviewZLayer = theLayer;
+}
+
+/**
+ * Returns a shape preview of the operation
+ */
+HYDROGUI_Shape* HYDROGUI_Operation::getPreviewShape() const
+{
+  return 0;
+}
+
+/**
+ * Return the operation preview manager
+ */
+OCCViewer_ViewManager* HYDROGUI_Operation::getPreviewManager()
+{
+  return myPreviewManager;
+}
+
+/**
+ * Set the preview manager
+ */
+void HYDROGUI_Operation::setPreviewManager( OCCViewer_ViewManager* theManager )
+{
+  if ( !theManager && myPreviewManager )
+    module()->getOCCDisplayer()->RemoveZLayer( myPreviewManager, getPreviewZLayer() );
+
+  myPreviewManager = theManager;
+
+  if ( myPreviewManager )
+    setPreviewZLayer( module()->getOCCDisplayer()->AddTopZLayer( myPreviewManager ) );
+}
+
 void HYDROGUI_Operation::startOperation()
 {
   LightApp_Operation::startOperation();
+  myModule->getActiveOperations().push( this );
 
   if( inputPanel() )
   {
@@ -109,6 +177,33 @@ void HYDROGUI_Operation::commitOperation()
   closeInputPanel();
 }
 
+void HYDROGUI_Operation::stopOperation()
+{
+  LightApp_Operation::stopOperation();
+
+  // pop the operation from the cached map of active operations
+  QStack<HYDROGUI_Operation*>& anOperations = myModule->getActiveOperations();
+  if ( !anOperations.empty() ) {
+    if ( anOperations.top() == this )
+      anOperations.pop();
+    else
+    {
+      // find in the stack the current operation and remove it from the stack
+      QVectorIterator<HYDROGUI_Operation*> aVIt( anOperations );
+      aVIt.toBack();
+      aVIt.previous(); // skip the top show/hide operation
+      while ( aVIt.hasPrevious() )
+      {
+        HYDROGUI_Operation* anOp = aVIt.previous();
+        if ( anOp == this )
+          anOperations.remove( anOperations.lastIndexOf( anOp ) );
+      }
+    }
+  }
+  // release the preview manager with removing the added preview Z layer
+  setPreviewManager( 0 );
+}
+
 void HYDROGUI_Operation::setDialogActive( const bool active )
 {
   LightApp_Operation::setDialogActive( active );
@@ -148,23 +243,35 @@ void HYDROGUI_Operation::processCancel()
 
 void HYDROGUI_Operation::startDocOperation()
 {
-  // Open transaction in the model document
+  // Open transaction in the model document only if it not
+  // already opened by other operation (intended for nested operations)
   if ( !doc()->IsOperation() )
+  {
     doc()->StartOperation();
+    myIsTransactionOpened = true;
+  }
 }
 
 void HYDROGUI_Operation::abortDocOperation()
 {
-  // Abort transaction in the model document
-  if ( doc()->IsOperation() )
+  // Abort transaction in the model document only if it was 
+  // opened by this operation (intended for nested operations)
+  if ( myIsTransactionOpened && doc()->IsOperation() )
+  {
     doc()->AbortOperation();
+    myIsTransactionOpened = false;
+  }
 }
 
 void HYDROGUI_Operation::commitDocOperation()
 {
-  // Commit transaction in the model document
-  if ( doc()->IsOperation() )
+  // Commit transaction in the model document only if it was 
+  // opened by this operation (intended for nested operations)
+  if ( myIsTransactionOpened && doc()->IsOperation() )
+  {
     doc()->CommitOperation( HYDROGUI_Tool::ToExtString( getName() ) );
+    myIsTransactionOpened = false;
+  }
 }
 
 Handle_HYDROData_Document HYDROGUI_Operation::doc() const
@@ -208,7 +315,10 @@ void HYDROGUI_Operation::onApply()
   }
   else
   {
-    abortDocOperation();
+    // Abort document opeartion only if requested
+    if ( isToAbortOnApply() )
+      abortDocOperation();
+
     printErrorMessage( anErrorMsg );
  
     // If the operation has no input panel - do abort