localmidlet.java

fantastic j2me user interface designer for midp2.0 cldcd 1.1. Works on many phones as a generic appl

package com.sun.me.web.sample.local;

import com.sun.lwuit.Button;
import com.sun.lwuit.ComboBox;
import com.sun.lwuit.Command;
import com.sun.lwuit.Component;
import com.sun.lwuit.Container;
import com.sun.lwuit.Dialog;
import com.sun.lwuit.events.DataChangedListener;
import com.sun.lwuit.events.SelectionListener;
import com.sun.me.web.request.Response;
import java.io.IOException;
import javax.microedition.midlet.MIDlet;
import com.sun.lwuit.Display;
import com.sun.lwuit.Font;
import com.sun.lwuit.Form;
import com.sun.lwuit.Graphics;
import com.sun.lwuit.Image;
import com.sun.lwuit.Label;
import com.sun.lwuit.List;
import com.sun.lwuit.TextField;
import com.sun.lwuit.animations.CommonTransitions;
import com.sun.lwuit.animations.Transition3D;
import com.sun.lwuit.events.ActionEvent;
import com.sun.lwuit.events.FocusListener;
import com.sun.lwuit.layouts.BorderLayout;
import com.sun.lwuit.layouts.BoxLayout;
import com.sun.lwuit.list.DefaultListCellRenderer;
import com.sun.lwuit.list.ListCellRenderer;
import com.sun.lwuit.list.ListModel;
import com.sun.lwuit.plaf.Border;
import com.sun.lwuit.plaf.Style;
import com.sun.me.web.path.Result;
import com.sun.me.web.path.ResultException;
import com.sun.me.web.request.Arg;
import com.sun.me.web.request.Request;
import com.sun.me.web.request.RequestListener;
import java.io.InputStream;
import java.util.Enumeration;
import java.util.Vector;
import javax.microedition.io.Connector;
import javax.microedition.io.HttpConnection;

/**
 * Implements the local business search UI of the makeover demo
 *
 * @author  Shai Almog
 */
public class LocalMIDlet extends MIDlet {
    /* Demo mode is activiated if network connection fails */
    private boolean demoMode = false;

    private static final int DEFAULT_MAP_ZOOM = 6;
    private int zoom = DEFAULT_MAP_ZOOM;

    /* TODO: Get own APP ID for Yahoo Local and Maps APIs */
    private static final String APPID = "VS2gtQrV34ElS4obpTabGJ0lxYxDjwPzrjgaj_xTo.VbdnpA24586Jul4oDCXpO3UVN7";

    private static final String LOCAL_BASE = "http://local.yahooapis.com/LocalSearchService/V2/localSearch";
    
    private static final String MAP_BASE = "http://api.local.yahoo.com/MapsService/V1/mapImage";

    static final Object LOADING_MARKER = new Object();
    
    private boolean started;
    private Command exitCommand = new Command("Exit") {
        public void actionPerformed(ActionEvent ev) {
            notifyDestroyed();
        }
    };
    
    private Command defaultThemeCommand = new Command("Default Theme") {
        public void actionPerformed(ActionEvent ev) {
            setTheme("/theme.res");
        }
    };
    
    private Command javaThemeCommand = new Command("Java Theme") {
        public void actionPerformed(ActionEvent ev) {
            setTheme("/javaTheme.res");
        }
    };

    private void setTheme(String name) {
        try {
            com.sun.lwuit.util.Resources res = com.sun.lwuit.util.Resources.open(name);
            com.sun.lwuit.plaf.UIManager.getInstance().setThemeProps(res.getTheme(res.getThemeResourceNames()[0]));
            Display.getInstance().getCurrent().refreshTheme();
        } catch(java.io.IOException err) {
             err.printStackTrace();
        }
    }
    
    private static Image getImage(String name) {
        try {
            return Image.createImage(name);
        } catch (IOException ex) {
            ex.printStackTrace();
            return null;
        }
    }
    
    protected void startApp() {
        Display.init(this);

        // distinguish between start and resume from pause
        if(!started) {
            started = true;
                        
            // show your LWUIT form here e.g.: new MyForm().show();
            // this is a good place to set your default theme using
            // the UIManager class e.g.:
            try {
                com.sun.lwuit.util.Resources res = com.sun.lwuit.util.Resources.open("/theme.res");
                com.sun.lwuit.plaf.UIManager.getInstance().setThemeProps(res.getTheme(res.getThemeResourceNames()[0]));
            } catch(java.io.IOException err) {
                 err.printStackTrace();
            }
            showMainForm();
        }
    }
    
    private void showMainForm() {
        Form mainForm = createForm("Local Search");
        mainForm.setTransitionInAnimator(Transition3D.createCube(500, false));
        mainForm.setTransitionOutAnimator(Transition3D.createCube(500, true));
        mainForm.setLayout(new BoxLayout(BoxLayout.Y_AXIS));
        mainForm.addComponent(new Label("search for:"));
        final TextField searchFor = new TextField("coffee", 50);
        mainForm.addComponent(searchFor);
        mainForm.addComponent(new Label("location:"));
        final TextField location = new TextField("95054", 50);
        mainForm.addComponent(location);
        mainForm.addComponent(new Label("street:"));
        final TextField street = new TextField(50);
        mainForm.addComponent(street);
        mainForm.addComponent(new Label("sort results by:"));
        final ComboBox sortResults = new ComboBox(new String[] {"Distance", "Title", "Rating", "Relevance"});
        mainForm.addComponent(sortResults);
        mainForm.addCommand(exitCommand);
        mainForm.addCommand(defaultThemeCommand);
        mainForm.addCommand(javaThemeCommand);
        mainForm.addCommand(new Command("Search") {
            public void actionPerformed(ActionEvent ev) {
                showSearchResultForm(searchFor.getText(), location.getText(), street.getText(), (String) sortResults.getSelectedItem());
            }
        });
        mainForm.show();
    }
    
    private void exception(Exception ex) {
        ex.printStackTrace();
        Dialog.show("Error", "Error connecting to search service - Turning on DEMO MODE", "OK", null);
        demoMode = true;
        showMainForm();
    }
    
    private void showSearchResultForm(String searchFor, String location, String street, String sortOrder) {
        final Form resultForm = createForm("result list");
        resultForm.setScrollable(false);
        resultForm.setLayout(new BorderLayout());
        InfiniteProgressIndicator tempIndicator = null;
        try {
            tempIndicator = new InfiniteProgressIndicator(Image.createImage("/wait-circle.png"));
        } catch (IOException ex) {
            tempIndicator = null;
            ex.printStackTrace();
        }
        final InfiniteProgressIndicator indicator = tempIndicator;
        final List resultList = new List(new LocalResultModel(searchFor, location, sortOrder, street)) {
            public boolean animate() {
                boolean val = super.animate();
                
                // return true of animate only if there is data loading, this saves battery and CPU
                if(indicator.animate()) {
                    int index = getSelectedIndex();
                    index = Math.max(0, index - 4);
                    ListModel model = getModel();
                    int dest = Math.min(index + 4, model.getSize());
                    for(int iter = index ; iter < dest ; iter++) {
                        if(model.getItemAt(index) == LOADING_MARKER) {
                            return true;
                        }
                    }
                }
                return val;
            }
        };
        Links pro = new Links();
        pro.title = "prototype";
        pro.tel = "9999999999";
        pro.distance = "9999999";
        pro.address = "Long address string";
        pro.rating = "5";
        resultList.setRenderingPrototype(pro);
        resultList.setFixedSelection(List.FIXED_NONE_CYCLIC);
        resultList.getStyle().setBorder(null);

        resultList.setListCellRenderer(new DefaultListCellRenderer(false) {
            private Label focus;
            private Container selected;
            private Label firstLine;
            private Label secondLine;
            private boolean loading;
            
            {
                selected = new Container(new BoxLayout(BoxLayout.Y_AXIS));
                firstLine = new Label("First Line");
                secondLine = new Label("Second Line");
                int iconWidth = 20;
                firstLine.getStyle().setMargin(LEFT, iconWidth);
                secondLine.getStyle().setMargin(LEFT, iconWidth);
                selected.addComponent(firstLine);
                selected.addComponent(secondLine);
            }
            
            public Component getListCellRendererComponent(List list, Object value, int index, boolean isSelected) {
                if(value == null || value == LOADING_MARKER) {
                    loading = true;
                    if(isSelected) {
                        firstLine.setText("Loading...");
                        secondLine.setText("Loading...");
                        return selected;
                    }
                    return indicator;
                }
                loading = false;
                if(isSelected) {
                    int listSelectionColor = list.getStyle().getFgSelectionColor();
                    firstLine.getStyle().setFgColor(listSelectionColor);
                    secondLine.getStyle().setFgColor(listSelectionColor);
                    firstLine.getStyle().setBgTransparency(0);
                    secondLine.getStyle().setBgTransparency(0);
                    Links l = (Links)value;
                    firstLine.setText(l.address + " " + l.tel);
                    secondLine.setText(l.distance + " miles " + ("".equals(l.rating) ? "" : ", " + l.rating + "*"));
                    return selected;
                }
                super.getListCellRendererComponent(list, ((Links)value).title, index, isSelected);
                return this;
            }
            
            public void paint(Graphics g) {
                if(loading) {
                    indicator.setX(getX());
                    indicator.setY(getY());
                    indicator.setWidth(getWidth());
                    indicator.setHeight(getHeight());
                    indicator.paint(g);
                } else {
                    super.paint(g);
                }
            }
            
            public Component getListFocusComponent(List list) {
                if(focus == null) {
                    try {
                        focus = new Label(Image.createImage("/svgSelectionMarker.png"));
                        focus.getStyle().setBgTransparency(0);
                    } catch (IOException ex1) {
                        ex1.printStackTrace();
                    }
                }
                return focus;
            }
        });
        resultForm.addComponent(BorderLayout.CENTER, resultList);
        resultForm.addCommand(new Command("Map") {
            public void actionPerformed(ActionEvent ev) {
                showMap(resultForm, resultList.getSelectedItem());
            }
        });
        resultForm.addCommand(new Command("Details") {
            public void actionPerformed(ActionEvent ev) {
                showDetails(resultForm, resultList.getSelectedItem());
            }
        });
        resultForm.addCommand(new Command("Back") {
            public void actionPerformed(ActionEvent ev) {
                showMainForm();
            }
        });
        resultForm.addCommand(exitCommand);
        resultForm.show();
    }
    
    private Label createSubLabel(String text, int fgColor, Font f) {
        Label l = new Label(text);
        Style s = l.getStyle();
        s.setFgColor(fgColor);
        s.setFont(f);
        return l;
    }
    
    private void showDetails(final Form resultForm, final Object selectedItem) {
        if(selectedItem != null && selectedItem instanceof Links) {
            Links l = (Links)selectedItem;
            int fgColor = resultForm.getStyle().getFgColor();
            Font standardFont = resultForm.getStyle().getFont();
            Form details = createForm(l.title);
            details.setLayout(new BoxLayout(BoxLayout.Y_AXIS));
            details.addComponent(createSubLabel("address", fgColor, standardFont));
            details.addComponent(new Label(l.address));
            details.addComponent(createSubLabel("distance", fgColor, standardFont));
            details.addComponent(new Label(l.distance + " mi."));
            details.addComponent(createSubLabel("average rating", fgColor, standardFont));
            details.addComponent(new Label(l.rating + "*"));
            details.addComponent(createSubLabel("telephone", fgColor, standardFont));
            details.addComponent(new Label(l.tel));
            details.addCommand(exitCommand);
            details.addCommand(new Command("Back") {
                public void actionPerformed(ActionEvent ev) {
                    resultForm.show();
                }
            });