- Main Page
- Related Pages
- Modules
- Namespaces
- Classes
- Examples

# NodeMonitor.h

    #ifndef __NodeMonitor_h__
    #define __NodeMonitor_h__

    //-
    // ==========================================================================
    // Copyright (C) 1995 - 2006 Autodesk, Inc. and/or its licensors.  All
    // rights reserved.
    //
    // The coded instructions, statements, computer programs, and/or related
    // material (collectively the "Data") in these files contain unpublished
    // information proprietary to Autodesk, Inc. ("Autodesk") and/or its
    // licensors, which is protected by U.S. and Canadian federal copyright
    // law and by international treaties.
    //
    // The Data is provided for use exclusively by You. You have the right
    // to use, modify, and incorporate this Data into other products for
    // purposes authorized by the Autodesk software license agreement,
    // without fee.
    //
    // The copyright notices in the Software and this entire statement,
    // including the above license grant, this restriction and the
    // following disclaimer, must be included in all copies of the
    // Software, in whole or in part, and all derivative works of
    // the Software, unless such copies or derivative works are solely
    // in the form of machine-executable object code generated by a
    // source language processor.
    //
    // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND.
    // AUTODESK DOES NOT MAKE AND HEREBY DISCLAIMS ANY EXPRESS OR IMPLIED
    // WARRANTIES INCLUDING, BUT NOT LIMITED TO, THE WARRANTIES OF
    // NON-INFRINGEMENT, MERCHANTABILITY OR FITNESS FOR A PARTICULAR
    // PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE, OR
    // TRADE PRACTICE. IN NO EVENT WILL AUTODESK AND/OR ITS LICENSORS
    // BE LIABLE FOR ANY LOST REVENUES, DATA, OR PROFITS, OR SPECIAL,
    // DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES, EVEN IF AUTODESK
    // AND/OR ITS LICENSORS HAS BEEN ADVISED OF THE POSSIBILITY
    // OR PROBABILITY OF SUCH DAMAGES.
    //
    // ==========================================================================
    //+

    // NodeMonitor.h

    //
    //
    // DESCRIPTION:  This class monitors a given node.
    //
    // AUTHOR: Christian Laforte
    //
    //

    #include <maya/MFnDagNode.h>
    #include <maya/MFnDependencyNode.h>
    #include <maya/MString.h>
    #include <maya/MNodeMessage.h>
    #include <maya/MObject.h>
    #include <maya/MSelectionList.h>
    #include <maya/MStatus.h>

    MObject getObjFromName(MString name, MStatus& stat);

    // If a problem occurs, this function returns an empty string.
    MString getNameFromObj(MObject obj);

    // Classes that implement the NodeMonitorManager interfaces
    // can be called back when a node is renamed.
    class NodeMonitorManager
    {
    public:
        virtual void onNodeRenamed(MObject& node, MString oldName, MString newName) = 0;
    };

    class NodeMonitor
    {
    public:
        NodeMonitor(NodeMonitorManager* manager = NULL);

        ~NodeMonitor();

        bool watch(MString nodeName);
        bool watch(MObject nodeObj);

        void stopWatching();

        bool dirty();

        void cleanIt();

        void setManager(NodeMonitorManager* manager) { fManager = manager; }

    private:
        bool attachCallbacks();

        void detachCallbacks();

        void callbackOccured();

        // Callback functions. Those are called, respectively, when a node is dirty (has changed substantially),
        // or when a node is renamed.
        static void watchedObjectDirtyCallback(void* clientData);

        static void watchedObjectRenamedCallback(MObject & node, void* clientData);

    private:
        MString fNodeName;
        bool fIsDirty;

        MCallbackId fRenamedCallbackId;
        MCallbackId fDirtyCallbackId;

        NodeMonitorManager* fManager;
    };

    #endif // MAYA_ShadingConnection