package isac.gui.treetable;

import isac.gui.Worksheet;

import isac.gui.mawen.editor.EditorListener;

import isac.gui.mawen.syntax.Ast;

import isac.interfaces.IEditor;

import isac.util.formulae.Formula;

import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.Component;

import java.awt.Dimension;

import java.awt.Rectangle;

import java.util.ArrayList;

import java.util.EventObject;

import java.util.Iterator;

import javax.swing.JPanel;

import javax.swing.JTextField;

import javax.swing.JTree;

import javax.swing.UIManager;

import javax.swing.border.LineBorder;

import javax.swing.event.CellEditorListener;

import javax.swing.event.ChangeEvent;

import javax.swing.tree.TreeCellRenderer;

public class CalcTreeCellEditor implements javax.swing.tree.TreeCellEditor {

	protected ArrayList<CellEditorListener> listeners_;

	protected Worksheet worksheet_;

	protected Object editedNode_;

	protected TreeCellRenderer renderer_;

	protected IEditor editor_;

	protected JTextField tacticText_;

	protected JPanel editorPanel_;

	private int subCell_;

	public static final int SUBCELL_FORMULA = 1;

	public static final int SUBCELL_TACTIC = 2;

	public CalcTreeCellEditor( TreeCellRenderer renderer, Worksheet ws ) {

		listeners_ = new ArrayList<CellEditorListener>();

		editedNode_ = null;

		subCell_ = 0;

		renderer_ = renderer;

		editor_ = EditorFactory.getFormulaEditor();

		editor_.addEditorListener(new EditorListener() {

      @Override

      public void notifyLocalCheck() {

        System.out.println("notifyLocalCheck");

      }

      @Override

      public void notifyIsaCheck() {

/*err*/ editedNode_ = new Formula(editor_.getMathText(), editor_.getFormula());

        notifyWorksheet();

      }

/*err*/public void notifyBraille(Ast.Ast formula) {

			System.out.println("output to Braille display");

			System.out.println(Ast.math_string_of(formula));

      }

    });

		tacticText_ = new JTextField();

		editorPanel_ = new JPanel();

		editorPanel_.setOpaque(true);

		editorPanel_.setBackground(UIManager.getColor("Tree.background"));

//		GridBagLayout gbl = new GridBagLayout();

		editorPanel_.setLayout(new BorderLayout());

//    GridBagConstraints gbc = new GridBagConstraints();

//    gbc.gridwidth = GridBagConstraints.REMAINDER;

//    gbc.fill = GridBagConstraints.BOTH;

//    gbc.weightx = 1.0;

//    gbc.weighty = 1.0;

//        

//    gbc.anchor = GridBagConstraints.WEST;

//    gbl.setConstraints( ep, gbc );		    

    editorPanel_.add(editor_.getComponent(), BorderLayout.CENTER);	

//    gbc.anchor = GridBagConstraints.EAST;

//    gbc.insets = new Insets( 0, 30, 0, 0 );

//    gbl.setConstraints( tacticText_, gbc );

    editorPanel_.add(tacticText_, BorderLayout.SOUTH);

    worksheet_ = ws;

	}

	public void activateSubCell( int subcell ) {

		subCell_ = subcell;

	}

	public int getSubCell() {

		return subCell_;

	}

	public void addCellEditorListener(CellEditorListener listener) {

		if( !listeners_.contains( listener ) )

			listeners_.add( listener ); 

		System.out.println("### Listeners : " + listeners_.size() );

		Iterator<CellEditorListener> it = listeners_.iterator();

		while(it.hasNext())

			System.out.println( it.next().toString() );

	}

	public void notifyWorksheet() {

		if( worksheet_ != null )

			worksheet_.editingStopped( new ChangeEvent( this ) );

	}

	public Object getCellEditorValue() {

		return editedNode_;

	}

	public boolean isCellEditable(EventObject e) {

		return true;

	}

	public void removeCellEditorListener(CellEditorListener listener) {

		listeners_.remove( listener ); 

	}

	public boolean shouldSelectCell(EventObject e) {

		return true;

	}

	public boolean stopCellEditing() {

		for( int i = 0; i < listeners_.size(); i++ )

			((CellEditorListener)(listeners_.get(i))).editingStopped( new ChangeEvent( this ) );

		return true;

	}

	public void cancelCellEditing() {

		for( int i = 0; i < listeners_.size(); i++ )

			((CellEditorListener)(listeners_.get(i))).editingCanceled( new ChangeEvent( this ) );

	}	

	/**called by double-clicking TreeTextPanel (which includes formula and tactic textfield)*/	

        @Override

	public Component getTreeCellEditorComponent(JTree tree, Object value, 

			boolean isSelected, boolean expanded, boolean leaf, int row) {

		if( !isSelected ) {

			return renderer_.getTreeCellRendererComponent(tree, value, true, expanded, leaf, row, true);

		}

		editedNode_ = value;

		if( !(value instanceof CalcModelNode ) )

			return null; 

		CalcModelNode current_node = (CalcModelNode) value;

		//

		if (editor_ instanceof JTextField) {

		  editor_.setFormula( current_node.toString() );

		}else {

		  if (current_node.getFormula() == null) {

		    // new Ast

/*err*/editor_.setFormula(new Ast.Constant("GAP"));

		  }else {

/*err*/editor_.setFormula(current_node.getFormula().getFormula().getTerm()   );

		  }

		}

		try {

			tacticText_.setText(((CalcModelNode)value).getSecondaryString() + "  ");

		} 

		catch (Exception e) {

			tacticText_.setText("");

		}

		if( subCell_ == SUBCELL_TACTIC ) {

		  if (editor_ instanceof JTextField) {

		    ((JTextField)editor_).setEditable( false );

		    ((JTextField)editor_).setEnabled( false );

		  }

			tacticText_.setBorder(new LineBorder( Color.BLACK  ) );			

			tacticText_.setEditable( true );

			tacticText_.setEnabled( true );

			tacticText_.requestFocusInWindow();

		}

		if( subCell_ == SUBCELL_FORMULA ) {

			tacticText_.setEditable( false );

			tacticText_.setEnabled( false );

			if (editor_ instanceof JTextField) {

  			((JTextField)editor_).setBorder(new LineBorder( Color.BLACK  ) );

  			((JTextField)editor_).setEditable( true );

  			((JTextField)editor_).setEnabled( true );

  			((JTextField)editor_).requestFocusInWindow();

			}

		}

		editorPanel_.revalidate();

		editorPanel_.setBackground(Color.RED);

		Rectangle worksheet_rect = this.worksheet_.getBounds();

		editorPanel_.setPreferredSize(new Dimension(worksheet_rect.width - 50, editor_.getExpressionSize().height + 25));

		editorPanel_.revalidate();

		tree.revalidate();

		return editorPanel_;

	}

}