SelectedNodeConfigController.java

/*
 * Copyright (c) 2008-2014 EMC Corporation
 * All Rights Reserved
 */
package com.emc.storageos.installer.controller;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import charva.awt.Component;
import charva.awt.event.ItemEvent;
import charva.awt.event.ItemListener;
import charvax.swing.JRadioButton;

import com.emc.storageos.services.util.Configuration;
import com.emc.storageos.installer.util.ClusterType;
import com.emc.storageos.installer.util.InstallerConstants;
import com.emc.storageos.installer.widget.SelectButtonPanel;

/**
 * Class implements the control for Node configuration page for rejoin case.
 * 
 */
public class SelectedNodeConfigController implements IConfigPanelController {
    private static final Logger log = LoggerFactory.getLogger(SelectedNodeConfigController.class);
    private int nodeCount = 0;
    private String nodeId;
    private Configuration config;
    private SelectButtonPanel panel;

    public SelectedNodeConfigController(Configuration config, SelectButtonPanel panel) {
        this.panel = panel;
        this.config = config;
        setupEventListener();
    }

    private void setupEventListener() {
        panel.selectList1ItemListener(new SelectNodeCountListener());
        panel.selectList2ItemListener(new SelectNodeIdListener());
    }

    class SelectNodeCountListener implements ItemListener {
        @Override
        public void itemStateChanged(ItemEvent ie) {
            int statechange = ie.getStateChange();
            Component source = (Component) ie.getSource();
            if (statechange == ItemEvent.SELECTED) {
                String buttonLabel = ((JRadioButton) source).getText();

                if (buttonLabel.equals(ClusterType.NODE_COUNT_1.getLabel())) {
                    nodeCount = ClusterType.NODE_COUNT_1.getCount();
                } else if (buttonLabel.equals(ClusterType.NODE_COUNT_3.getLabel())) {
                    nodeCount = ClusterType.NODE_COUNT_3.getCount();
                } else if (buttonLabel.equals(ClusterType.NODE_COUNT_5.getLabel())) {
                    nodeCount = ClusterType.NODE_COUNT_5.getCount();
                }
                resetVisibility();
                resetEnableDisable();
            }
        }

        /*
         * Disable/gray out the node id already taken
         */
        private void resetEnableDisable() {
            // get the node already taken and disable it
            for (int i = 0; i < nodeCount; i++) {
                JRadioButton node = panel.getButtonList2().get(i);
                if (config.getAliveNodes().contains(node.getText())) {
                    // this node already taken, disable it
                    node.setEnabled(false);
                } else {
                    node.setEnabled(true);
                }
            }
        }

        /*
         * Reset the visibility of the node id based on the node count of selected cluster.
         */
        private void resetVisibility() {
            // reset all buttons to invisible and clear the selection made
            // before first
            for (JRadioButton node : panel.getButtonList2()) {
                node.setSelected(false);
                node.setVisible(false);
            }
            // set the label back visible
            panel.getEastLabel().setVisible(true);
            // enable buttons based on node count
            for (int i = 0; i < nodeCount; i++) {
                panel.getButtonList2().get(i).setVisible(true);
            }
        }
    }

    class SelectNodeIdListener implements ItemListener {
        @Override
        public void itemStateChanged(ItemEvent ie) {
            int statechange = ie.getStateChange();
            Component source = (Component) ie.getSource();
            if (statechange == ItemEvent.SELECTED) {
                JRadioButton button = (JRadioButton) source;
                nodeId = button.getText();
            }
        }
    }

    @Override
    public String[] configurationIsCompleted() {
        String err = null;
        if (nodeId == null) {
            err = InstallerConstants.CLUSTER_CONFIG_WARN_MSG;
        } else {
            log.info("Saving node id {} into the config", nodeId);
            config.setNodeId(nodeId);
        }
        return (err == null) ? null : new String[] { err };
    }

}