/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2014 Jean-Pierre Charras, jp.charras at wanadoo.fr
 * Copyright (C) 2008 Wayne Stambaugh <stambaughw@gmail.com>
 * Copyright (C) 2004-2020 KiCad Developers, see AUTHORS.txt for contributors.
 * Copyright (C) 2017 CERN
 * @author Maciej Suminski <maciej.suminski@cern.ch>
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 */

#ifndef SYMBOL_EDIT_FRAME_H
#define SYMBOL_EDIT_FRAME_H

#include <sch_base_frame.h>
#include <sch_screen.h>
#include <lib_item.h>
#include <ee_collectors.h>
#include <core/optional.h>

class SCH_EDIT_FRAME;
class SYMBOL_LIB_TABLE;
class LIB_PART;
class LIB_FIELD;
class DIALOG_LIB_EDIT_TEXT;
class SYMBOL_TREE_PANE;
class LIB_TREE_NODE;
class LIB_ID;
class SYMBOL_LIBRARY_MANAGER;
class SYMBOL_EDITOR_SETTINGS;


/**
 * The symbol library editor main window.
 */
class SYMBOL_EDIT_FRAME : public SCH_BASE_FRAME
{
    LIB_PART*               m_my_part;           // a part I own, it is not in any library, but a
                                                 // copy could be.
    wxComboBox*             m_unitSelectBox;     // a ComboBox to select a unit to edit (if the
                                                 // part has multiple units)
    SYMBOL_TREE_PANE*       m_treePane;          // component search tree widget
    SYMBOL_LIBRARY_MANAGER* m_libMgr;            // manager taking care of temporary modifications
    SYMBOL_EDITOR_SETTINGS* m_settings;          // Handle to the settings

    // The unit number to edit and show
    int m_unit;

    // Show the normal shape ( m_convert <= 1 ) or the converted shape ( m_convert > 1 )
    int m_convert;

    ///< Flag if the symbol being edited was loaded directly from a schematic.
    bool m_isSymbolFromSchematic;

    /**
     * The reference of the symbol.
     *
     * @note This is only valid when the current symbol was loaded from the schematic.
     */
    wxString m_reference;

    // True to force DeMorgan/normal tools selection enabled.
    // They are enabled when the loaded symbol has graphic items for converted shape
    // But under some circumstances (New symbol created) these tools must left enabled
    static bool m_showDeMorgan;

public:
    /**
     * Set to true to synchronize pins at the same position when editing symbols with multiple
     * units or multiple body styles.  Deleting or moving pins will affect all pins at the same
     * location.
     * When units are interchangeable, synchronizing editing of pins is usually the best way,
     * because if units are interchangeable, it implies that all similar pins are at the same
     * location.
     * When units are not interchangeable, do not synchronize editing of pins, because each part
     * is specific, and there are no (or few) similar pins between units.
     *
     * Setting this to false allows editing each pin per part or body style regardless other
     * pins at the same location. This requires the user to open each part or body style to make
     * changes to the other pins at the same location.
     *
     * To know if others pins must be coupled when editing a pin, use SynchronizePins() instead
     * of m_syncPinEdit, because SynchronizePins() is more reliable (takes in account the fact
     * units are interchangeable, there are more than one unit).
     */
    bool          m_SyncPinEdit;

public:
    SYMBOL_EDIT_FRAME( KIWAY* aKiway, wxWindow* aParent );

    ~SYMBOL_EDIT_FRAME() override;

    /**
     * switches currently used canvas ( Cairo / OpenGL).
     */
    void SwitchCanvas( EDA_DRAW_PANEL_GAL::GAL_TYPE aCanvasType ) override;

    /**
     * Get if any parts or libraries have been modified but not saved.
     *
     * @return true if the any changes have not been saved
     */
    bool IsContentModified() override;

    /**
     * Check if any pending libraries have been modified.
     *
     * This only checks for modified libraries.  If a new symbol was created and modified
     * and no libraries have been modified, the return value will be false.
     *
     * @return True if there are any pending library modifications.
     */
    bool HasLibModifications() const;

    /** The nickname of the current library being edited and empty string if none. */
    wxString GetCurLib() const;

    /** Sets the current library nickname and returns the old library nickname. */
    wxString SetCurLib( const wxString& aLibNickname );

    LIB_TREE_NODE* GetCurrentTreeNode() const;

    /**
     * Return the LIB_ID of the library or symbol selected in the symbol tree.
     */
    LIB_ID GetTreeLIBID( int* aUnit = nullptr ) const;

    /**
     * Return the current part being edited or NULL if none selected.
     *
     * This is a LIB_PART that I own, it is at best a copy of one in a library.
     */
    LIB_PART* GetCurPart() { return m_my_part; }

    /**
     * Take ownership of aPart and notes that it is the one currently being edited.
     */
    void SetCurPart( LIB_PART* aPart );

    SYMBOL_LIBRARY_MANAGER& GetLibManager();

    SELECTION& GetCurrentSelection() override;

    void ReCreateMenuBar() override;

    // See comments for m_SyncPinEdit.
    bool SynchronizePins();

    void OnImportBody( wxCommandEvent& aEvent );
    void OnExportBody( wxCommandEvent& aEvent );

    /**
     * Creates or adds an existing library to the symbol library table.
     */
    bool AddLibraryFile( bool aCreateNew );

    /**
     * Creates a new part in the selected library.
     */
    void CreateNewPart();

    void ImportPart();
    void ExportPart();

    /**
     * Saves the selected part or library.
     */
    void Save();

    /**
     * Saves the selected part or library to a new name and/or location.
     */
    void SaveAs();

    /**
     * Saves all modified parts and libraries.
     */
    void SaveAll();

    /**
     * Reverts unsaved changes in a part, restoring to the last saved state.
     */
    void Revert( bool aConfirm = true );
    void RevertAll();

    void DeletePartFromLibrary();

    void CopyPartToClipboard();

    void LoadPart( const wxString& aLibrary, const wxString& aPart, int Unit );

    /**
     * Inserts a duplicate part.  If aFromClipboard is true then action is a paste.
     */
    void DuplicatePart( bool aFromClipboard );

    void OnSelectUnit( wxCommandEvent& event );

    void OnToggleSearchTree( wxCommandEvent& event );

    bool IsSearchTreeShown();
    void FreezeSearchTree();
    void ThawSearchTree();

    void OnUpdatePartNumber( wxUpdateUIEvent& event );

    void UpdateAfterSymbolProperties( wxString* aOldName = nullptr );
    void RebuildSymbolUnitsList();

    bool canCloseWindow( wxCloseEvent& aCloseEvent ) override;
    void doCloseWindow() override;
    void OnExitKiCad( wxCommandEvent& event );
    void ReCreateHToolbar() override;
    void ReCreateVToolbar() override;
    void ReCreateOptToolbar() override;

    void LoadSettings( APP_SETTINGS_BASE* aCfg ) override;
    void SaveSettings( APP_SETTINGS_BASE* aCfg ) override;

    SYMBOL_EDITOR_SETTINGS* GetSettings()
    {
        return m_settings;
    }

    COLOR_SETTINGS* GetColorSettings() override;

    /**
     * Trigger the wxCloseEvent, which is handled by the function given to EVT_CLOSE() macro:
     * <p>
     * EVT_CLOSE( SYMBOL_EDIT_FRAME::OnCloseWindow )
     * </p>
     */
    void CloseWindow( wxCommandEvent& event )
    {
        // Generate a wxCloseEvent
        Close( false );
    }

    /**
     * Must be called after a schematic change in order to set the "modify" flag of the
     * current symbol.
     */
    void OnModify() override;

    int GetUnit() const { return m_unit; }
    void SetUnit( int aUnit ) { m_unit = aUnit; }

    int GetConvert() const { return m_convert; }
    void SetConvert( int aConvert ) { m_convert = aConvert; }

    bool GetShowDeMorgan() const { return m_showDeMorgan; }
    void SetShowDeMorgan( bool show ) { m_showDeMorgan = show; }

    void ClearMsgPanel() override
    {
        DisplaySymbolDatasheet();
    }

    bool IsSymbolFromSchematic() const { return m_isSymbolFromSchematic; }

protected:
    void setupUIConditions() override;

private:
    // Sets up the tool framework
    void setupTools();

    void savePartAs();

    /**
     * Saves the changes to the current library.
     *
     * A backup file of the current library is saved with the .bak extension before the
     * changes made to the library are saved.
     * @param aLibrary is the library name.
     * @param aNewFile Ask for a new file name to save the library.
     * @return True if the library was successfully saved.
     */
    bool saveLibrary( const wxString& aLibrary, bool aNewFile );

    /**
     * Updates the main window title bar with the current library name and read only status
     * of the library.
     */
    void updateTitle();

    /**
     * Set the current active library to \a aLibrary.
     *
     * @param aLibrary the nickname of the library in the symbol library table.  If empty,
     *                 display list of available libraries to select from.
     */
    void SelectActiveLibrary( const wxString& aLibrary = wxEmptyString );

    /**
     * Display a list of loaded libraries in the symbol library and allows the user to select
     * a library.
     *
     * This list is sorted, with the library cache always at end of the list
     *
     * @return the library nickname used in the symbol library table.
     */
    wxString SelectLibraryFromList();

    /**
     * Loads a symbol from the current active library, optionally setting the selected unit
     * and convert.
     *
     * @param aAliasName The symbol alias name to load from the current library.
     * @param aUnit Unit to be selected
     * @param aConvert Convert to be selected
     * @return true if the symbol loaded correctly.
     */
    bool LoadSymbolFromCurrentLib( const wxString& aAliasName, int aUnit = 0, int aConvert = 0 );

    /**
     * Create a copy of \a aLibEntry into memory.
     *
     * @param aLibEntry A pointer to the LIB_PART object to an already loaded symbol.
     * @param aLibrary the path to the library file that \a aLibEntry was loaded from.  This is
     *                 for error messaging purposes only.
     * @param aUnit the initial unit to show.
     * @param aConvert the initial DeMorgan variant to show.
     * @return True if a copy of \a aLibEntry was successfully copied.
     */
    bool LoadOneLibraryPartAux( LIB_PART* aLibEntry, const wxString& aLibrary, int aUnit,
                                int aConvert );

public:
    /**
     * Display the documentation of the selected symbol.
     */
    void DisplaySymbolDatasheet();

    // General editing
    /**
     * Create a copy of the current symbol, and save it in the undo list.
     *
     * Because a symbol in library editor does not have a lot of primitives, the full data is
     * duplicated. It is not worth to try to optimize this save function.
     */
    void SaveCopyInUndoList( EDA_ITEM* aItem, UNDO_REDO aUndoType = UNDO_REDO::LIBEDIT,
                             bool aAppend = false );

    void GetSymbolFromUndoList();
    void GetSymbolFromRedoList();

    void RollbackSymbolFromUndo();

    /**
     * Free the undo or redo list from \a aList element.
     *
     * - Wrappers are deleted.
     * - data pointed by wrappers are deleted if not in use in schematic
     *   i.e. when they are copy of a schematic item or they are no more in use (DELETED)
     *
     * @param whichList = the UNDO_REDO_CONTAINER to clear
     * @param aItemCount = the count of items to remove. < 0 for all items
     * items are removed from the beginning of the list.
     * So this function can be called to remove old commands
     */
    void ClearUndoORRedoList( UNDO_REDO_LIST whichList, int aItemCount = -1 ) override;

private:
    /**
     * Read a symbol file (*.sym ) and add graphic items to the current symbol.
     *
     * A symbol file *.sym has the same format as a library, and contains only one symbol.
     */
    void LoadOneSymbol();

    /**
     * Saves the current symbol to a symbol file.
     *
     * The symbol file format is similar to the standard symbol library file format, but
     * there is only one symbol.  Invisible pins are not saved.
     */
    void SaveOneSymbol();

    void refreshSchematic();

public:
    /**
     * Selects the currently active library and loads the symbol from \a aLibId.
     *
     * @param aLibId is the #LIB_ID of the symbol to select.
     * @param aUnit the unit to show
     * @param aConvert the DeMorgan variant to show
     * @return true if the symbol defined by \a aLibId was loaded.
     */
    bool LoadSymbolAndSelectLib( const LIB_ID& aLibId, int aUnit, int aConvert );

    /**
     * Print a page
     *
     * @param aDC = wxDC given by the calling print function
     */
    void PrintPage( RENDER_SETTINGS* aSettings ) override;

    /**
     * Creates the SVG print file for the current edited symbol.
     */
    void SVGPlotSymbol( const wxString& aFullFileName );

    /**
     * Synchronize the library manager to the symbol library table, and then the symbol tree
     * to the library manager.  Optionally displays a progress dialog.
     */
    void SyncLibraries( bool aShowProgress );

    /**
     * Filter, sort, and redisplay the library tree.  Does NOT synchronize it with libraries
     * in disk.
     */
    void RegenerateLibraryTree();

    /**
     * Allows Libedit to install its preferences panel into the preferences dialog.
     */
    void InstallPreferences( PAGED_DIALOG* aParent, PANEL_HOTKEYS_EDITOR* aHotkeysPanel ) override;

    /**
     * Called after the preferences dialog is run.
     */
    void CommonSettingsChanged( bool aEnvVarsChanged, bool aTextVarsChanged ) override;

    void ShowChangedLanguage() override;

    void SetScreen( BASE_SCREEN* aScreen ) override;

    const BOX2I GetDocumentExtents( bool aIncludeAllVisible = true ) const override;

    void RebuildView();

    /**
     * Rebuild the GAL and redraw the screen.  Call when something went wrong.
     */
    void HardRedraw() override;

    void KiwayMailIn( KIWAY_EXPRESS& mail ) override;

    /**
     * Load a symbol from the schematic to edit in place.
     *
     * @param aSymbol the symbol to edit.
     * @param aReference the reference of the symbol to edit.
     * @param aUnit the unit of the symbol to edit.
     * @param aConvert the alternate body style of the symbol to edit.
     */
    void LoadSymbolFromSchematic( const std::unique_ptr<LIB_PART>& aSymbol,
                                  const wxString& aReference, int aUnit, int aConvert );

    ///> Restores the empty editor screen, without any part or library selected.
    void emptyScreen();

private:
    ///> Helper screen used when no part is loaded
    SCH_SCREEN* m_dummyScreen;

    /**
     * Displays a dialog asking the user to select a symbol library table.
     * @param aOptional if set the Cancel button will be relabelled "Skip".
     * @return Pointer to the selected symbol library table or nullptr if canceled.
     */
    SYMBOL_LIB_TABLE* selectSymLibTable( bool aOptional = false );

    ///> Creates a backup copy of a file with requested extension
    bool backupFile( const wxFileName& aOriginalFile, const wxString& aBackupExt );

    ///> Returns currently edited part.
    LIB_PART* getTargetPart() const;

    ///> Returns either the part selected in the symbol tree, if context menu is active or the
    ///> currently modified part.
    LIB_ID getTargetLibId() const;

    ///> Returns either the library selected in the symbol tree, if context menu is active or
    ///> the library that is currently modified.
    wxString getTargetLib() const;

    /*
     * Returns true when the operation has succeeded (all requested libraries have been saved
     * or none was selected and confirmed by OK).
     * @param aRequireConfirmation when true, the user must be asked to confirm.
     */
    bool saveAllLibraries( bool aRequireConfirmation );

    ///> Saves the current part.
    bool saveCurrentPart();

    ///> Stores the currently modified part in the library manager buffer.
    void storeCurrentPart();

    ///> Returns true if \a aLibId is an alias for the editor screen part.
    bool isCurrentPart( const LIB_ID& aLibId ) const;

    ///> Renames LIB_PART aliases to avoid conflicts before adding a symbol to a library
    void ensureUniqueName( LIB_PART* aPart, const wxString& aLibrary );

    DECLARE_EVENT_TABLE()
};

#endif  // SYMBOL_EDIT_FRAME_H