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+/* This file is part of the KDE project
+   Copyright (C) 2004 by Alexander Dymo <cloudtemple@mksat.net>
+
+   This library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public
+   License as published by the Free Software Foundation; either
+   version 2 of the License, or (at your option) any later version.
+
+   This library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public License
+   along with this library; see the file COPYING.LIB.  If not, write to
+   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.
+*/
+#ifndef KDEV_DOC_PLUGIN_H
+#define KDEV_DOC_PLUGIN_H
+
+#include <tqmap.h>
+#include <tqvaluelist.h>
+#include <tqpair.h>
+
+#include <tdelistbox.h>
+#include <tdelistview.h>
+#include <kurl.h>
+#include <tdefile.h>
+
+#define CACHE_VERSION "3"
+
+/**Documentation list item.
+Stores the type of a documentation it represents and an URL.*/
+class DocumentationItem: public TDEListViewItem
+{
+public:
+    /**Type of documentation which is represented by this item.*/
+    enum Type {
+        Collection    /**<Collection - a collection of catalogs, folder with catalogs.*/,
+        Catalog       /**<Catalog - a term which defines a document or a group of documents.*/,
+        Book          /**<Book - a document with nested documents.*/,
+        Document      /**<Document.*/
+    };
+
+    DocumentationItem(Type type, TDEListView *parent, const TQString &name);
+    DocumentationItem(Type type, TDEListView *parent, TDEListViewItem *after, const TQString &name);
+    DocumentationItem(Type type, TDEListViewItem *parent, const TQString &name);
+    DocumentationItem(Type type, TDEListViewItem *parent, TDEListViewItem *after, const TQString &name);
+
+    virtual void setURL(const KURL &url) { m_url = url; }
+    virtual KURL url() const { return m_url; }
+
+    Type type() const { return m_type; }
+
+    void setType(Type t) { 
+        if(t != m_type) {
+            m_type = t;
+            init();
+        }
+    }
+private:
+    void init();
+
+    KURL m_url;
+    Type m_type;
+};
+
+class DocumentationPlugin;
+
+/**Documentation catalog list item.*/
+class DocumentationCatalogItem: public DocumentationItem
+{
+public:
+    DocumentationCatalogItem(DocumentationPlugin* plugin, TDEListView *parent, const TQString &name);
+    DocumentationCatalogItem(DocumentationPlugin* plugin, DocumentationItem *parent, const TQString &name);
+    virtual ~DocumentationCatalogItem();
+
+    DocumentationPlugin* plugin() const { return m_plugin; }
+
+    virtual void setOpen(bool o);
+    void load();
+
+    virtual bool isProjectDocumentationItem() const { return m_isProjectDocumentationItem; }
+    virtual void setProjectDocumentationItem(bool b) { m_isProjectDocumentationItem = b; }
+
+    virtual TQString cacheVersion() const { return ""; } /// should return a short string that identifies the version of the catalog
+    
+protected:
+    virtual void activate();
+
+private:
+    DocumentationPlugin* m_plugin;
+    bool isLoaded;
+    bool isActivated;
+    bool m_isProjectDocumentationItem;
+};
+
+class IndexBox;
+
+/**Prototype of index item.
+Prototypes represent an index are used to build index items after index generation.*/
+class IndexItemProto
+{
+public:
+    IndexItemProto(DocumentationPlugin *plugin, DocumentationCatalogItem *catalog, IndexBox *listbox,
+        const TQString &text, const TQString &description);
+    ~IndexItemProto();
+
+    void addURL(const KURL &url) { m_url = url; }
+    KURL url() const { return m_url; }
+    TQString text() const { return m_text; }
+    TQString description() const { return m_description; }
+
+private:
+    KURL m_url;
+    IndexBox *m_listbox;
+    TQString m_text;
+    TQString m_description;
+};
+
+/**Documentation index item.*/
+class IndexItem: public TQListBoxText {
+public:
+    typedef TQPair<TQString, KURL> URL;
+    typedef TQValueList<URL> List;
+
+    IndexItem(IndexBox *listbox, const TQString &text);
+
+    List urls() const;
+
+private:
+    IndexBox *m_listbox;
+};
+
+/**Documentation index view.*/
+class IndexBox: public TDEListBox{
+public:
+    IndexBox(TQWidget *parent = 0, const char *name = 0);
+
+    virtual void addIndexItem(IndexItemProto *item);
+    virtual void removeIndexItem(IndexItemProto *item);
+    virtual void fill();
+    virtual void refill();
+    virtual void setDirty(bool dirty);
+//    virtual void refill(TQValueList<IndexItemProto*> &items);
+
+private:
+    TQMap<TQString, TQValueList<IndexItemProto*> > items;
+    friend class IndexItem;
+
+    bool m_dirty;
+};
+
+class TQPainter;
+class TQColorGroup;
+class TQFontMetrics;
+class DocumentationPlugin;
+
+/**Documentation configuration item.*/
+class ConfigurationItem: public TQCheckListItem
+{
+public:
+    ConfigurationItem(TQListView *parent, DocumentationPlugin * plugin, const TQString &title, const TQString &url,
+        bool indexPossible, bool fullTextSearchPossible);
+
+    virtual TQString title() const { return m_title; }
+    virtual void setTitle(const TQString title) { setText(3, m_title = title); }
+    virtual TQString url() const { return m_url; }
+    virtual void setURL(const TQString url) { setText(4, m_url = url); }
+
+    virtual bool isChanged() const { return m_title == m_origTitle; }
+    virtual TQString origTitle() const {return m_origTitle; }
+
+    virtual void paintCell(TQPainter *p, const TQColorGroup &cg, int column, int width, int align);
+    virtual int width(const TQFontMetrics &fm, const TQListView *lv, int c) const;
+
+    bool contents() const { return m_contents; }
+    void setContents(bool contents) { m_contents = contents; }
+    bool index() const { return m_index; }
+    void setIndex(bool index) { m_index = index; }
+    bool fullTextSearch() const { return m_fullTextSearch; }
+    void setFullTextSearch(bool fullTextSearch) { m_fullTextSearch = fullTextSearch; }
+
+    bool indexPossible() const { return m_indexPossible; }
+    bool fullTextSearchPossible() const { return m_fullTextSearchPossible; }
+
+    DocumentationPlugin * docPlugin() { return m_docPlugin; }
+
+private:
+    TQString m_title;
+    TQString m_url;
+    TQString m_origTitle;
+
+    bool m_contents;
+    bool m_index;
+    bool m_fullTextSearch;
+
+    bool m_indexPossible;
+    bool m_fullTextSearchPossible;
+
+    DocumentationPlugin * m_docPlugin;
+};
+
+
+class ProjectDocumentationPlugin;
+
+/**
+@short Documentation Plugin Interface
+
+All KDevelop documentation plugins must implement this interface.
+Documentation plugin handles certain documentation type. It provides
+methods to load documentation catalogs and indexes for a documentation
+of that type. It also has methods to configure catalogs and provides
+a list of URL's for the full text search tool.
+*/
+class DocumentationPlugin: public TQObject
+{
+    Q_OBJECT
+  
+public:
+    /**Capability of documentation plugin.*/
+    enum Capability { Index=1 /**<index can be built for catalogs*/,
+                      FullTextSearch=2 /**<full text search is possible in catalog locations*/,
+                      CustomDocumentationTitles=4 /**<user can specify titles for documentation catalogs*/,
+                      ProjectDocumentation=8 /**<plugin can handle project API documentation*/,
+                      ProjectUserManual=16 /**<plugin can handle project user manual*/ };
+    /**Possible project documentation types.*/
+    enum ProjectDocType { APIDocs, UserManual };
+
+    /**Constructor. Should initialize capabilities of the plugin by using setCapabilities
+    protected method. For example,
+    @code
+    setCapabilities(Index | FullTextSearch);
+    @endcode
+    */
+    DocumentationPlugin(TDEConfig *pluginConfig, TQObject *parent =0, const char *name =0);
+    virtual ~DocumentationPlugin();
+
+    /**Returns the i18n name of the plugin.*/
+    virtual TQString pluginName() const = 0;
+
+    /**Creates documentation catalog with given title and url.*/
+    virtual DocumentationCatalogItem *createCatalog(TDEListView *contents, const TQString &title, const TQString &url) = 0;
+
+    /**Initialize a list of catalogs.
+    @param contents the listview to fill with catalogs
+    */
+    virtual void init(TDEListView *contents);
+    /**Reloads a list of catalogs. This method should add missing catalogs to the view,
+    update index for added catalogs and also delete restricted catalogs.
+    @param contents the listview to fill with catalogs
+    @param index the listbox with index to update
+    @param restrictions the list of catalogs names to remove
+    */
+    virtual void reinit(TDEListView *contents, IndexBox *index, TQStringList restrictions);
+    /**Initializes plugin configuration. Documentation plugins should be able to
+    initialize the default configuration on startup without any user interaction.
+    Call this in the constructor of your plugin.*/
+    virtual void autoSetup();
+    /**Plugin specific automatic setup code. This method is called by @ref autoSetup.*/
+    virtual void autoSetupPlugin() = 0;
+
+    /**Indicates if a catalog with specified name is enabled. Documentation plugin
+    should check this and do not load catalogs disabled in configuration.
+    All catalogs are enabled by default.*/
+    virtual bool catalogEnabled(const TQString &name) const;
+    /**Enables or disables documentation catalog.*/
+    virtual void setCatalogEnabled(const TQString &name, bool e);
+
+    /**Indicates if an index of given catalog should be rebuilt. This method
+    is used by index caching algorythm to make a descision to rebuild index
+    or to load it from cache.*/
+    virtual bool needRefreshIndex(DocumentationCatalogItem *item) = 0;
+    /**Indicates if an index is enabled for given catalog. If documentation plugin
+    has Index capability, indices for it's catalogs can be enabled/disabled
+    in configuration dialog.*/
+    virtual bool indexEnabled(DocumentationCatalogItem *item) const;
+    /**Enables or disables index for documentation catalog.*/
+    virtual void setIndexEnabled(DocumentationCatalogItem *item, bool e);
+    /**Builds index for given catalog. This method should fill index with
+    IndexItem objects.
+    @param index the listbox which contains index items
+    @param item the catalog item that holds an index being built
+    */
+    virtual void createIndex(IndexBox *index, DocumentationCatalogItem *item) = 0;
+
+    /**Creates a table of contents for given catalog. Documentation part uses
+    lazy loading of toc's to reduce startup time. This means that createTOC
+    will be called on expand event of catalog item.*/
+    virtual void createTOC(DocumentationCatalogItem *item) = 0;
+    /**Sets the URL to the catalog. This method will be called each time user
+    clicks the documentation item. If it is too much overhead to determine the
+    documentation catalog url in @ref createCatalog method then you can set it here.*/
+    virtual void setCatalogURL(DocumentationCatalogItem *item) = 0;
+    virtual TQStringList fullTextSearchLocations() = 0;
+
+    /**Loads catalog configuration and fills configurationView with ConfigurationItem objects.*/
+    virtual void loadCatalogConfiguration(TDEListView *configurationView);
+    /**Saves catalog configuration basing on configurationView and
+    deletedConfigurationItems contents. If you use TDEConfig to store configuration,
+    it is important that you call TDEConfig::sync() method after saving.*/
+    virtual void saveCatalogConfiguration(TDEListView *configurationView);
+    /**Adds new catalog to a configuration.*/
+    virtual void addCatalogConfiguration(TDEListView *configurationView,
+        const TQString &title, const TQString &url);
+    /**Edits catalog configuration.*/
+    virtual void editCatalogConfiguration(ConfigurationItem *configurationItem,
+        const TQString &title, const TQString &url);
+    /**Removes catalog from configuration. configurationItem should not be removed here.*/
+    virtual void deleteCatalogConfiguration(const ConfigurationItem *const configurationItem);
+
+    /**Returns a mode and a filter for catalog locator dialogs.*/
+    virtual TQPair<KFile::Mode, TQString> catalogLocatorProps() = 0;
+    /**Returns a title of catalog defined by an url parameter.*/
+    virtual TQString catalogTitle(const TQString &url) = 0;
+
+    /**Reloads documentation catalogs and indices.*/
+    virtual void reload();
+    /**Clears documentation catalogs and indices.*/
+    virtual void clear();
+
+    /**Checks if documentation plugin has given capability.*/
+    bool hasCapability(Capability cap) const { return m_capabilities & cap; }
+
+    /**Sets dirty flag for all indices. Index caching algorythm will update
+    the cache next time @ref createIndex is called.*/
+    void setDirtyIndex(bool dirty) { m_indexCreated = dirty; }
+
+    /**Caches index for documentation catalog. Reimplement this only if custom
+    caching algorythm is used (do not forget to reimplement also @ref loadCachedIndex
+    and @ref createIndex).*/
+    virtual void cacheIndex(DocumentationCatalogItem *item);
+    /**Loads index from the cache. Reimplement this only if custom
+    caching algorythm is used (do not forget to reimplement also @ref cacheIndex
+    and @ref createIndex).*/
+    virtual bool loadCachedIndex(IndexBox *index, DocumentationCatalogItem *item);
+
+    /**Returns associated project documentation plugin. Default implementation returns zero.
+    Reimplement this if the documentation plugin can also handle project documentation.*/
+    virtual ProjectDocumentationPlugin *projectDocumentationPlugin(ProjectDocType /* type */) { return 0; }
+
+public slots:
+    /**Creates index and fills index listbox. Reimplement this only if custom
+    caching algorythm is used (do not forget to reimplement also @ref cacheIndex
+    and @ref loadCachedIndex).*/
+    virtual void createIndex(IndexBox *index);
+
+protected:
+    /**A list of loaded documentation catalogs.*/
+    TQValueList<DocumentationCatalogItem*> catalogs;
+    /**A map of names of loaded documentation catalogs.*/
+    TQMap<TQString, DocumentationCatalogItem*> namedCatalogs;
+    /**A map of indices of loaded documentation catalogs.*/
+    TQMap<DocumentationCatalogItem*, TQValueList<IndexItemProto*> > indexes;
+
+    /**Sets capabilities of documentation plugin.*/
+    void setCapabilities(int caps) { m_capabilities = caps; }
+    /**Clears index of given catalog.*/
+    virtual void clearCatalogIndex(DocumentationCatalogItem *item);
+    /**Loads index from cache or creates and caches it if does not exist.*/
+    void loadIndex(IndexBox *index, DocumentationCatalogItem *item);
+
+    /**Stores items deleted from configuration. @ref saveCatalogConfiguration
+    uses this to remove entries from configuration file.*/
+    TQStringList deletedConfigurationItems;
+
+    /**Configuration object used by a plugin.*/
+    TDEConfig *config;
+
+private:
+    /**Adds catalog item to catalogs, namedCatalogs and indexes lists and maps.*/
+    virtual void addCatalog(DocumentationCatalogItem *item);
+    /**Removes catalog item from catalogs, namedCatalogs and indexes lists and maps.*/
+    virtual void clearCatalog(DocumentationCatalogItem *item);
+
+    int m_capabilities;
+    bool m_indexCreated;
+
+
+friend class IndexItemProto;
+friend class DocumentationCatalogItem;
+};
+
+
+/**
+@short Project documentation plugin
+
+Represents functionality to display project documentation catalog and index in documentation browser.
+*/
+class ProjectDocumentationPlugin: public TQObject {
+    Q_OBJECT
+  
+public:
+    ProjectDocumentationPlugin(DocumentationPlugin *docPlugin, DocumentationPlugin::ProjectDocType type);
+    virtual ~ProjectDocumentationPlugin();
+
+    /**Initializes project documentation plugin - creates documentation catalog.*/
+    virtual void init(TDEListView *contents, IndexBox *index, const TQString &url);
+    /**Deinitializes project documentation plugin - removes documentation catalog.*/
+    virtual void deinit();
+
+    TQString pluginName() const;
+    TQString catalogURL() const;
+
+public slots:
+    /**Performs reinitialization if project documentation has changed (after building api documentation).*/
+    virtual void reinit();
+
+protected:
+    DocumentationPlugin *m_docPlugin;
+    DocumentationCatalogItem *m_catalog;
+
+private:
+    DocumentationPlugin::ProjectDocType m_type;
+
+    class KDirWatch *m_watch;
+    class TDEListView *m_contents;
+    class IndexBox *m_index;
+    TQString m_url;
+};
+
+#endif