package application.actions;

import application.editor.stages.ControlFlowModelingStage;
import application.editor.stages.ControlFlowModelingStageStatus;
import com.mxgraph.model.mxCell;
import com.mxgraph.swing.mxGraphComponent;
import models.controlFlowModel.ObjectNodeAttribute;

import javax.swing.*;
import java.awt.event.ActionEvent;

public class IntroduceMediatorObjectAction extends AbstractPopupAction {
	
	private ControlFlowModelingStage stage = null;
	
	public IntroduceMediatorObjectAction(final ControlFlowModelingStage stage, final mxGraphComponent graphComponent, final mxCell cell) {
		super(/*propName*/"insertMediator", cell, graphComponent);
		this.stage = stage;
	}
	
	@Override
	public void actionPerformed(ActionEvent e) {
		super.actionPerformed(e);
		insertObjectNode(targetCell);
		this.stage.setState(ControlFlowModelingStageStatus.SELECTING_AN_EDGE);
	}
	
	/**
	 * 仲介者オブジェクトの導入を実行する.
	 *
	 * @param cellObj 選択されたエッジのセル
	 */
	private void insertObjectNode(final Object cellObj) {
		if (cellObj == null) return;
		
		mxCell edgeCell = null;
		if (cellObj instanceof mxCell) edgeCell = (mxCell) cellObj;
		else return;
		
		// Inputing name to the dialog.
		String objName = JOptionPane.showInputDialog("Object Name:");
		if (objName == null) return;
		
		if (objName.isEmpty()) {
			JOptionPane.showMessageDialog(graphComponent, "You must input a name. \nIt mustn't be empty.");
			return;
		}
		
		if (isDuplicatedName(objName)) {
			JOptionPane.showMessageDialog(graphComponent, "The named object has already existed.");
			return;
		}
		
		stage.insertObjectNodeCellInControlFlowLayer(edgeCell, objName);
	}
	
	/**
	 * 同名のノードがすでにあるか判定する
	 *
	 * @param name つけたいノード名
	 */
	private boolean isDuplicatedName(final String name) {
		mxCell root = (mxCell) graphComponent.getGraph().getDefaultParent();
		
		for (int i = 0; i < root.getChildCount(); i++) {
			mxCell layerCell = (mxCell) root.getChildAt(i);
			
			for (int j = 0; j < layerCell.getChildCount(); j++) {
				mxCell cell = (mxCell) layerCell.getChildAt(j);
				
				ObjectNodeAttribute attr = null;
				if (cell.getValue() instanceof ObjectNodeAttribute)
					attr = (ObjectNodeAttribute) cell.getValue();
				else continue;
				
				if (!(attr.getObjectNode().getName().equals(name))) continue;
				return true;
			}
		}
		return false;
	}
}