OP_GalleryEntry.h

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/*
 * PROPRIETARY INFORMATION.  This software is proprietary to
 * Side Effects Software Inc., and is not to be reproduced,
 * transmitted, or disclosed in any way without written permission.
 *
 * NAME:        OP_GalleryEntry.h ( OP Library, C++)
 *
 * COMMENTS:    Class that defines an OP_Gallery entry.
 */

#ifndef __OP_GalleryEntry__
#define __OP_GalleryEntry__

#include "OP_API.h"
#include <UT/UT_Options.h>
#include <UT/UT_ValArray.h>
#include <UT/UT_Compression.h>
#include <FS/FS_IndexFile.h>

#define OP_GALLERY_ENTRY_PREFIX     "gallery::"

class UT_StringArray;
class OP_Gallery;
class OP_Node;
class OP_Network;

class OP_API OP_GalleryEntry
{
public:
    // This simple constructor creates a gallery entry in memory only. It
    // has no connection to the Gallery Manager or any Gallery.
                                 OP_GalleryEntry();
    virtual                     ~OP_GalleryEntry();

    bool                         getEntryIsValid() const;
    bool                         match(const char *namepattern,
                                       const char *labelpattern,
                                       const char *keywordpattern,
                                       const char *category,
                                       const char *optable,
                                       const char *optype) const;

    const UT_String             &getFilePath() const;
    const UT_String             &getEntryName() const;
    void                         setEntryName(const char *entryname);

    void                         getLabel(UT_String &label) const;
    void                         setLabel(const char *label);

    void                         getDescription(UT_String &description) const;
    void                         setDescription(const char *description);

    void                         getIcon(UT_String &icon) const;
    void                         setIcon(const char *icon);

    bool                         getAllowIconRegeneration() const;
    void                         setAllowIconRegeneration(bool flag);

    void                         getHelpUrl(UT_String &helpurl) const;
    void                         setHelpUrl(const char *helpurl);

    void                         getOTLPath(UT_String &otlpath) const;
    void                         setOTLPath(const char *otlpath);

    void                         getOpTable(UT_String &optable) const;
    void                         setOpTable(const char *optable);

    void                         getOpTypes(UT_String &optypes) const;
    void                         getOpTypes(UT_StringArray &optypes) const;
    void                         setOpTypes(const char *optypes);
    void                         setOpTypes(const UT_StringArray &optypes);

    void                         getKeywords(UT_String &keywords) const;
    void                         getKeywords(UT_StringArray &keywords) const;
    void                         setKeywords(const char *keywords);
    void                         setKeywords(const UT_StringArray &keywords);

    void                         getCategories(UT_String &cats) const;
    void                         getCategories(UT_StringArray &cats) const;
    void                         setCategories(const char *cats);
    void                         setCategories(const UT_StringArray &cats);

    bool                         hasContents() const;
    bool                         applyContents(OP_Node *destnode) const;
    void                         setContents(OP_Node *srcnode);

    bool                         hasParms() const;
    bool                         applyParms(OP_Node *destnode) const;
    void                         getParms(UT_String &script) const;
    void                         setParms(OP_Node *srcnode);
    void                         setParms(const UT_WorkBuffer &data);

    // Applies information other than parms and contents. Right now this
    // means setting the node comment to the gallery entry description.
    bool                         applyOther(OP_Node *destnode) const;

    // Applies the parms and contents from this gallery entry to the
    // supplied node.
    bool                         canApplyToNode(OP_Node *node) const;
    bool                         applyToNode(OP_Node *node) const;

    // Finds the "natural" manager in which it can be instantiated:
    OP_Network                  *getNaturalOpManager() const;

    // Creates a new node and applies this entry to that new node. The
    // net parameter specifies the network that should be the parent of
    // the new node. If no network is given, the node is created in the
    // "natural" network type for that gallery entry.
    bool                         canCreateChildNode(OP_Network *net=0) const;
    OP_Node                     *createChildNode(OP_Network *net=0,
                                            bool move_to_good_pos=true) const;

    // Finds the name of the best operator type acceptable to this entry.
    void                         getBestOpType(UT_String &optype, 
                                        OP_Network *parent_net = NULL) const;

    // Uses the specified node to initialize the entry. All previous
    // information is removed first.
    void                         setInformationFromNode(OP_Node *node);

    // Clears all information from this entry.
    void                         clearAllInformation();

    // Set one gallery entry equal to another. This copies the options, name,
    // and index file contents, but not the gallery pointer.
    const OP_GalleryEntry       &operator=(const OP_GalleryEntry &src);

    // This compare function can be used with the various UT_ValArray
    // sorting functions to sort gallery entries based on the entry name.
    static int                   compareEntries(OP_GalleryEntry * const *a,
                                                OP_GalleryEntry * const *b);

    /// Returns ture if the gallery entry is in the process of creating
    /// a node, before it even applies the parameters, contents, or other
    /// changes.
    static bool                  isCreatingNode();

protected:
    // This constructor form is used by Gallery objects loading from the
    // gallery file.
                                 OP_GalleryEntry(OP_Gallery *owner,
                                                 const char *entryname,
                                                 bool newentry);

    void                         clear();
    bool                         getOption(const char *optionname,
                                           UT_String &optionvalue) const;
    bool                         getOption(const char *optionname,
                                           UT_StringArray &optionvalues,
                                           bool spaceisseparator) const;
    bool                         getOptionBool(const char *optionname,
                                           bool &optionvalue) const;
    void                         setOption(const char *optionname,
                                           const UT_String &optionvalue);
    void                         setOption(const char *optionname,
                                           const UT_StringArray &optionvalues);
    void                         setOptionBool(const char *optionname,
                                           bool optionvalue);

    void                         saveCompressedSection(const char *section,
                                                       const UT_WorkBuffer &data,
                                                       UT_CompressionType type);
    bool                         loadCompressedSection(const char *section,
                                                       char *&buffer,
                                                       int &buflen) const;
    void                         allowEditing();

private:
    void                         createDefault();
    void                         loadFromGallery();

    OP_Gallery                  *myGallery;
    FS_IndexFile                *myIndexFile;
    UT_String                    myEntryName;
    UT_Options                   myOptions;
    bool                         myEditableIndexFile;
    static bool                  theCreatingNodeFlag;

    friend class                 OP_Gallery;
};

typedef UT_ValArray<OP_GalleryEntry *> OP_GalleryEntryList;

#endif