/*
	Copyright 2006-2017 The QElectroTech Team
	This file is part of QElectroTech.
	
	QElectroTech 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.
	
	QElectroTech 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 QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef CUSTOM_ELEMENT_EDITOR_H
#define CUSTOM_ELEMENT_EDITOR_H
#include <QtWidgets>
#include "qetmainwindow.h"
#include "qet.h"
#include "elementscene.h"
#include "elementslocation.h"


class ElementItemEditor;
class ElementView;

/**
	This class represents an element editor, allowing users to draw, change and
	configure a particular electrical element.
*/
class QETElementEditor : public QETMainWindow {
	Q_OBJECT
	
	// constructor, destructor
	public:
		QETElementEditor(QWidget * = nullptr);
		~QETElementEditor() override;
	private:
		QETElementEditor(const QETElementEditor &);
		void setupActions();
		void setupMenus();
		void setupInterface();
	
	// attributes
	private:
	/// whether the editor is "read-only"
	bool read_only;
	/// menus
	QMenu *file_menu, *edit_menu, *paste_from_menu, *display_menu, *tools_menu;
	/// view widget for the editing scene
	ElementView *m_view;
	/// editing scene
	ElementScene *m_elmt_scene;
	/// container for widgets dedicated to primitive edition
	QDockWidget *m_tools_dock;
	/// Stack of widgets for tools_dock
	QStackedWidget *m_tools_dock_stack;
	/// label displayed when several primitives are selected
	QLabel *m_default_informations;
	/// Hash associating primitive names with their matching edition widget
	QHash<QString, ElementItemEditor *> m_editors;
	/// ScrollArea for the tools_dock DockWidget
	QScrollArea *m_tools_dock_scroll_area;
	/// container for the undo list
	QDockWidget *m_undo_dock;
	/// Container for the list of existing primitives
	QDockWidget *m_parts_dock;
	/// List of primitives
	QListWidget *m_parts_list;
	/// actions for the "file" menu
	QAction *new_element, *open, *open_dxf, *open_file, *save, *save_as, *save_as_file, *reload, *quit;
	/// actions for the "edit" menu
	QAction *selectall, *deselectall, *inv_select;
	QAction *cut, *copy, *paste, *paste_in_area, *paste_from_file, *paste_from_elmt;
	QAction *undo, *redo;
	QAction *edit_delete, *edit_size_hs, *edit_names, *edit_author, *m_edit_properties;
	/// toolbars
	QToolBar *parts_toolbar, *main_toolbar, *view_toolbar, *depth_toolbar, *element_toolbar;
	/// Action group
	QActionGroup *parts, *m_zoom_ag, *m_depth_ag;
	/// minimum window title
	QString min_title;
	/// filename of the currently edited element
	QString filename_;
	/// location of the currently edited element
	ElementsLocation location_;
	/// whether the currently edited element comes from a file or a location
	bool opened_from_file;
	
	// methods
	public:
	void setNames(const NamesList &);
	void setLocation(const ElementsLocation &);
	ElementsLocation location() const;
	void setFileName(const QString &);
	QString fileName() const;
	void setReadOnly(bool);
	bool isReadOnly() const;
	void fromFile(const QString &);
	void fromLocation(const ElementsLocation &);
	bool toFile(const QString &);
	bool toLocation(const ElementsLocation &location);
	bool isEditing(const ElementsLocation &);
	bool isEditing(const QString &);
	ElementScene *elementScene() const;
	void readSettings();
	void writeSettings();
	static QPointF pasteOffset();
	static QString getOpenElementFileName(QWidget * = nullptr, const QString & = QString());
	void contextMenu(QPoint p);

	signals:
		void saveToLocation(ElementsLocation loc);

	protected:
	void closeEvent(QCloseEvent *) override;
	void firstActivation(QEvent *) override;

	private:
		bool canClose();
		QWidget *clearToolsDock();
		void copyAndPasteXml(const QDomDocument &);
	
	public slots:
		void addLine();
		void addRect();
		void addEllipse();
		void addPolygon();
		void addArc();
		void addText();
		void addTextField();
		void addTerminal();
		void addDynamicTextField();
		void UncheckAddPrimitive();

	void slot_new();
	void slot_open();
	void slot_openDxf();
	void slot_openFile();
	void openRecentFile(const QString &);
	void openElement(const QString &);
	void slot_reload();
	bool slot_save();
	bool slot_saveAs();
	bool slot_saveAsFile();
	void slot_setRubberBandToView();
	void slot_setNoDragToView();
	void slot_updateInformations();
	void slot_updateMenus();
	void slot_updateTitle();
	void slot_createPartsList();
	void slot_updatePartsList();
	void slot_updateSelectionFromPartsList();
	bool checkElement();
	void pasteFromFile();
	void pasteFromElement();
	void updateCurrentPartEditor();
};

/**
	@param nameslist the new list of names for the currently edited element
*/
inline void QETElementEditor::setNames(const NamesList &nameslist) {
	m_elmt_scene -> setNames(nameslist);
}

/**
	@return the location of the currently edited element
*/
inline ElementsLocation QETElementEditor::location() const {
	return(location_);
}

/**
	@return the filename of the currently edited element
*/
inline QString QETElementEditor::fileName() const {
	return(filename_);
}

/**
	@return the editing scene
*/
inline ElementScene *QETElementEditor::elementScene() const {
	return(m_elmt_scene);
}

#endif