com.google.gwt.sample.stockwatcher.client.NavigationHandler.java Source code

Introduction

Here is the source code for com.google.gwt.sample.stockwatcher.client.NavigationHandler.java

Source

package com.google.gwt.sample.stockwatcher.client;

import java.util.logging.Level;
import java.util.logging.Logger;

import com.google.gwt.event.logical.shared.ValueChangeEvent;
import com.google.gwt.event.logical.shared.ValueChangeHandler;

public class NavigationHandler implements ValueChangeHandler<String> {

    final FoundPage foundpage = new FoundPage();
    final HomePage homepage = new HomePage();
    final MarketPage marketpage = new MarketPage();
    final Logger logger = Logger.getLogger("NavigationHandler");

    String appPage;
    String[] args;
    Content appPageReference;

    String command = "";

    /**
     * Currently supports:
     * 
     * found!{command}!... where command can be "newplayer" to show new player form
     * homepage
     * market
     * TODO: manual
     */
    @Override
    public void onValueChange(ValueChangeEvent<String> event) {
        // We've extended ValueChangeEvent<String> so we can be sure event is a String (right?)
        String historyToken = event.getValue();

        logger.log(Level.INFO, "NavigationHandler.onValueChange(" + historyToken + ") running");

        appPage = "";
        args = new String[] {};
        appPageReference = null;
        command = "";

        if (historyToken.contains("!")) {
            String[] parts = historyToken.split("!");
            appPage = parts[0];

            command = parts[1];
        } else {
            appPage = historyToken;
            command = "";
        }

        logger.log(Level.INFO, "appPage = " + appPage);
        logger.log(Level.INFO, "command = " + command);

        // Get a reference to the singleton ContentController
        ContentContainer contentContainer = ContentContainer.getInstance();

        // Parse the history token
        if (appPage == "found") {

            logger.log(Level.INFO, "loading found page");

            if (command == "newplayer") {
                logger.log(Level.INFO, "Revealing new player form");
                foundpage.showNewPlayer();

            } else {
                logger.log(Level.INFO, "Hiding new player form");
                foundpage.hideNewPlayer();
            }

            appPageReference = foundpage;
        } else if (historyToken == "homepage") {
            appPageReference = homepage;
        } // TODO: UN NULL THIS
        else if (historyToken == "manual") {
        } // TODO: UN NULL THIS
        else if (historyToken == "market") {
            appPageReference = marketpage;
        }

        logger.log(Level.INFO, "NavigationHandler redrawing content div");
        contentContainer.setDivContent(appPageReference, "content");
    }

}