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+/* This file is part of the KDE project
+   Copyright (C) 2001-2002 Matthias Hoelzer-Kluepfel <hoelzer@kde.org>
+   Copyright (C) 2001-2002 Bernd Gehrmann <bernd@kdevelop.org>
+   Copyright (C) 2001 Sandy Meier <smeier@kdevelop.org>
+   Copyright (C) 2002 Daniel Engelschalt <daniel.engelschalt@gmx.net>
+   Copyright (C) 2002 Simon Hausmann <hausmann@kde.org>
+   Copyright (C) 2002-2003 Roberto Raggi <roberto@kdevelop.org>
+   Copyright (C) 2003 Mario Scalas <mario.scalas@libero.it>
+   Copyright (C) 2003 Harald Fernengel <harry@kdevelop.org>
+   Copyright (C) 2003 Hamish Rodda <rodda@kde.org>
+   Copyright (C) 2004 Alexander Dymo <adymo@kdevelop.org>
+
+   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 TDEVCORE_H
+#define TDEVCORE_H
+
+/**
+@file tdevcore.h
+The interface to the application core and context menu classes.
+*/
+
+#include <tqstringlist.h>
+#include <tqdict.h>
+#include <tqobject.h>
+
+#include <kurl.h>
+
+class KDialogBase;
+class TDevPlugin;
+class CodeModelItem;
+class ProjectModelItem;
+
+namespace KParts
+{
+    class Part;
+}
+
+class TQStatusBar;
+class TQPopupMenu;
+
+/**
+Base class for every context.
+Think of a Context-based class as "useful
+info associated to a context menu". Several context menu can be defined,
+each defining different information: because of these context menus being
+used in many modules, they are defined here.
+
+When context menu with a certain "context" associated appears, KDevelop core 
+sends a notification signal and all plugins which receive this signal have
+the ability to add own items into the menu. For example, VCS plugin could
+add "commit" and "update" menu items to the context menu of a file.
+
+<b>How to use context from a plugin:</b>
+-# Create a popup menu in context menu event handler: @code TDEPopupMenu menu(this); @endcode
+-# Create a context: @code MyContext context(param). @endcode
+-# Fill a context menu: @code core()->fillContextMenu(&menu, &context); @endcode
+-# Show the popup menu: @code menu.exec(event->globalPos()); @endcode
+.
+In this example @em event is an object of TQContextMenuEvent class which you have access
+to if you reimplement TQWidget::contextMenuEvent method.
+
+<b>How to fill context menu from a plugin:</b>
+-# Create a @code contextMenu(TQPopupMenu *, const Context *) @endcode slot in your plugin class.
+-# Connect TDevCore::contextMenu(TQPopupMenu *, const Context *) signal to that slot in
+the constructor of your plugin:\n 
+@code
+connect(core(), TQT_SIGNAL(contextMenu(TQPopupMenu *, const Context *)),
+    this, TQT_SLOT(contextMenu(TQPopupMenu *, const Context *)));
+@endcode
+-# Fill the menu in the slot you created, for example:\n
+@code
+if (context->hasType(Context::EditorContext))
+{
+    const EditorContext *econtext = static_cast<const EditorContext*>(context);
+    int id = popup->insertItem(i18n("My Menu Item 1"), this, TQT_SLOT(myMenuAction1()));
+    popup->setWhatsThis(id, i18n("What's this for my menu item 1"));
+}
+else if context->hasType(MyContext))
+{
+    int id = popup->insertItem(...
+    ...
+}
+...
+@endcode
+*/
+class Context
+{
+public:
+    /**Pre-defined context types. More may be added so it is possible to add custom
+    contexts. <strong>We reserve enum values until 1000 (yeah, it is one thousand )
+    for tdevelop official context types.</strong>*/
+    enum Type
+    { 
+        EditorContext,            /**<Editor context menu.*/
+        DocumentationContext,     /**<Documentation browser context menu.*/
+        FileContext,              /**<File context menu.*/
+        ProjectModelItemContext,  /**<Project tree context menu.*/
+        CodeModelItemContext      /**<Class tree context menu.*/
+    };
+
+    /**Implement this in the context so we can provide rtti.*/
+    virtual int type() const = 0;
+
+    /**@return The type of this Context, so clients can discriminate
+    between different file contexts.*/
+    virtual bool hasType(int type) const;
+
+protected:
+    /**Constructor.*/
+    Context();
+
+    /**Destructor.*/
+    virtual ~Context();
+};
+
+/**A context for the popup menu in the editor.*/
+class EditorContext: public Context
+{
+public:
+    /**Builds a context for an editor part.
+    @param url The url of a file in the editor.
+    @param line The line number where the cursor is.
+    @param col The column number where the cursor is.
+    @param linestr The content of the line where the cursor is.
+    @param wordstr The current word under the cursor.*/
+    EditorContext(const KURL &url, int line, int col,
+        const TQString &linestr, const TQString &wordstr);
+    
+    /**Destructor.*/
+    virtual ~EditorContext();
+
+    virtual int type() const;
+
+    /**@return The url for the file which this context was invoked for.*/
+    const KURL &url() const;
+
+    /**@return The line number for the cursor position.*/
+    int line() const;
+
+    /**@return The column number for the cursor position.*/
+    int col() const;
+
+    /**@return A TQString with the content of the line which this context was
+    invoked for.*/
+    TQString currentLine() const;
+
+    /**@return A TQString containing the word near to the cursor when this
+    context object was created.*/
+    TQString currentWord() const;
+
+private:
+    class Private;
+    Private *d;
+
+    EditorContext( const EditorContext &);
+    EditorContext &operator=( const EditorContext &);
+};
+
+
+/**
+A context for the popup menu in the documentation browser widget.
+*/
+class DocumentationContext: public Context
+{
+public:
+
+    /**Builds a DocumentationContext.
+    @param url The URL that the context will be for.
+    @param selection Selected text.*/
+    DocumentationContext(const TQString &url, const TQString &selection );
+
+    /**Copy constructor.*/
+    DocumentationContext(const DocumentationContext &);
+    DocumentationContext &operator=(const DocumentationContext &);
+
+    /**Destructor.*/
+    virtual ~DocumentationContext();
+
+    virtual int type() const;
+
+    /**@return The url of the document this context was invoked for.*/
+    TQString url() const;
+
+    /**@return The selected text in the document.*/
+    TQString selection() const;
+
+private:
+    class Private;
+    Private *d;
+};
+
+/**
+A context for the popup menu in file views and other parts that show files.
+Context allows multiple selections of files.
+*/
+class FileContext : public Context
+{
+public:
+    /**Builds the file context using a @ref KURL::List
+    @param someURLs The list of selected files URLs.*/
+    FileContext(const KURL::List &someURLs);
+    
+    /**Destructor.*/
+    virtual ~FileContext();
+
+    virtual int type() const;
+
+    /**@return A reference to the selected of URLs.*/
+    const KURL::List &urls() const;
+
+private:
+    class Private;
+    Private *d;
+
+    FileContext( const FileContext &);
+    FileContext &operator=( const FileContext &);
+};
+
+/**
+A context for the popup menu in class views.
+*/
+class CodeModelItemContext: public Context
+{
+public:
+    /**Builds the context.
+    @param item Selected code model item representation. Usually a symbol from the code
+    like class, function, etc.*/
+    CodeModelItemContext(const CodeModelItem* item);
+
+    /**Destructor.*/
+    virtual ~CodeModelItemContext();
+
+    virtual int type() const;
+
+    /**@return The code model item for the selected item.*/
+    const CodeModelItem* item() const;
+
+private:
+    class Private;
+    Private *d;
+
+    CodeModelItemContext( const CodeModelItemContext &);
+    CodeModelItemContext &operator=( const CodeModelItemContext &);
+};
+
+/**
+A context for the popup menu in project views.
+*/
+class ProjectModelItemContext : public Context
+{
+public:
+    /**Builds the context.
+    @param item The item to build the context from.*/
+    ProjectModelItemContext(const ProjectModelItem* item);
+
+    /**Destructor.*/
+    virtual ~ProjectModelItemContext();
+
+    virtual int type() const;
+
+    /**@return The code model item for the selected item.*/
+    const ProjectModelItem* item() const;
+
+private:
+    class Private;
+    Private *d;
+
+    ProjectModelItemContext( const ProjectModelItemContext &);
+    ProjectModelItemContext &operator=( const ProjectModelItemContext &);
+};
+
+
+
+
+/**
+A TDevCore class defines an object which takes care about the cooperation
+between the various plug-in which compose KDevelop.
+It defines:
+- signals that can be captured for menu customization;
+- notifications about opening / closing projects;
+- methods to access functionality of KDevelop core;
+- requests to fill project and global settings widgets;
+- etc.
+.
+*/
+class TDevCore: public TQObject
+{
+    Q_OBJECT
+  
+public:
+    /**Constructor
+    @param parent The TQObject that's the parent of this class.
+    @param name The name of the class.*/
+    TDevCore(TQObject *parent=0, const char *name=0);
+
+    /**Destructor.*/
+    virtual ~TDevCore();
+
+    /**Fills the context menu.
+    This method should be called by a part that wants to show a
+    context menu. The parameter @p context should be filled with
+    information about the context in which this happens (see
+    EditorContext, DocumentationContext, ClassContext, ...).
+    Essentially, this method emits the signal contextMenu()
+    which other parts can use to hook in.
+    @sa Context for a detailed explanation of context menu initializations and usage.
+    @param popup The popup menu to fill.
+    @param context The pointer to a Context object of this popup menu.*/
+    virtual void fillContextMenu(TQPopupMenu *popup, const Context *context) = 0;
+
+    /**Closes the current project and open the new one. You cannot use the @ref TDevPlugin::project() 
+    * method right after opening a new project, as it will return a null pointer.
+    *You must wait for the eventloop to be reentered, so use a signleshot timer
+    *to do the job needed after the project is opened or connect a slot to the
+    *@ref projectOpened signal.
+    * @param projectFileName The file name of the project to open.*/
+    virtual void openProject(const TQString& projectFileName) = 0;
+
+    /**Marks the component as running (or not running). As long as at least one
+    component is running, the stop button is enabled. When it is pressed,
+    component get a stopButtonClicked(). This is usable for plugins which 
+    run certain commands and want KDevelop core to be notified of that.
+    If core is notified, it can allow the user to stop(interrupt) the command
+    manually by means of stop button.
+    @param which The plugin to mark.
+    @param runs true if plugin is running something, false if it is not.*/
+    virtual void running(TDevPlugin *which, bool runs) = 0;
+
+signals:
+    /**Emitted after the core has done all initializations and
+    the main window has been shown.*/
+    void coreInitialized();
+
+    /**A project has been opened.*/
+    void projectOpened();
+
+    /**The project is about to be closed.*/
+    void projectClosed();
+
+    /**The language support part has been changed.*/
+    void languageChanged();
+
+    /**The user has clicked the stop button.
+    If all actions should be cancelled, pass 0 to @p which
+    @param which The TDevPlugin object to stop.*/
+    void stopButtonClicked(TDevPlugin *which);
+
+    /**A context menu has been requested somewhere. Components
+    may hook some entries into it. More information on the
+    context can be obtained by looking for the type of
+    @p context and casting it accordingly.
+    @sa Context for a detailed explanation of context menu initializations and usage.
+    @param popupMenu The popup menu to fill.
+    @param context The Context of this popup menu.*/
+    void contextMenu(TQPopupMenu *popupMenu, const Context *context);
+
+    /**Expects that a configuration page for use in the
+    KDevelop settings dialog is created by the component.
+    The configuration page is not demand-loading, it will be created before
+    global settings dialog is shown. Use @ref ConfigWidgetProxy in your plugin
+    to create demand-loading configuration pages.
+    @param dlg The dialog which the configuration widget should be added to.*/
+    void configWidget(KDialogBase *dlg);
+
+    /**Expects that a configuration page for use in the
+    Project settings dialog is created by the component.
+    The configuration page is not demand-loading, it will be created before
+    project settings dialog is shown. Use @ref ConfigWidgetProxy in your plugin
+    to create demand-loading configuration pages.
+    @param dlg The dialog which the configuration widget should be added to.*/
+    void projectConfigWidget(KDialogBase *dlg);
+};
+
+#endif