Stanford CS106A #7 Assignment7 讨论帖

yiyiyaya

时间：2012.8.22-2012.8.31

课程：
23. Searching and sorting
24. programming in the large data
25. additional topics
26. Stanford Java
27. life after CS106A
28. Review for final exam

作业：
Assignment 7 FacePamphlet.java
due: 2012.8.31

zhuolinliu8

FacePamphlet.java

/*
* File: FacePamphlet.java
* -----------------------
* When it is finished, this program will implement a basic social network
* management system.
*/
import acm.program.*;
import acm.graphics.*;
import acm.util.*;
import java.awt.event.*;
import javax.swing.*;
public class FacePamphlet extends Program
implements FacePamphletConstants {
/**
* This method has the responsibility for initializing the
* interactors in the application, and taking care of any other
* initialization that needs to be performed.
*/
public void init() {
/* Initialzing the interactors */
add(new JLabel("Name"),NORTH);
input_name.addActionListener(this);
add(input_name,NORTH);
add(new JButton("Add"),NORTH);
add(new JButton("Delete"),NORTH);
add(new JButton("Lookup"),NORTH);
/* West */
change_status.setActionCommand("Change Status");
change_status.addActionListener(this);
add(change_status,WEST);
add(new JButton("Change Status"),WEST);
add(new JLabel(EMPTY_LABEL_TEXT),WEST);
change_picture.setActionCommand("Change Picture");
change_picture.addActionListener(this);
add(change_picture,WEST);
add(new JButton("Change Picture"),WEST);
add(new JLabel(EMPTY_LABEL_TEXT),WEST);
add_friend.setActionCommand("Add Friend");
add_friend.addActionListener(this);
add(add_friend,WEST);
add(new JButton("Add Friend"),WEST);
addActionListeners();
/* Canvas and Database */
fpdata = new FacePamphletDatabase();
canvas = new FacePamphletCanvas();
add(canvas);
}
/**
* This class is responsible for detecting when the buttons are
* clicked or interactors are used, so you will have to add code
* to respond to these actions.
*/
public void actionPerformed(ActionEvent e) {
String cmd = e.getActionCommand();
if(cmd.equals("Add")){
String text = input_name.getText();
if(text != null){
boolean f = true;
if(fpdata.containsProfile(text)) f = false;
current_profile = new FacePamphletProfile(text);
fpdata.addProfile(current_profile);
canvas.displayProfile(current_profile);
if(!f)
canvas.showMessage("A profile with the name "+text+" already exists");
else canvas.showMessage("New profile created");
}
}else if(cmd.equals("Delete")){
String text = input_name.getText();
if(text != null) {
canvas.removeAll();
if(fpdata.containsProfile(text)){
canvas.showMessage("Profile of "+ text+" deleted");
current_profile = null;
}
else canvas.showMessage("A profile with the name "+ text+" does not exist");
fpdata.deleteProfile(text);
}
}else if(cmd.equals("Lookup")){
String text = input_name.getText();
if(text != null){
if(fpdata.containsProfile(text))
{
current_profile = fpdata.getProfile(text);
canvas.displayProfile(current_profile);
canvas.showMessage("Displaying " + current_profile.getName());
}else {
canvas.removeAll();
current_profile = null;
canvas.showMessage(text +" does not exist");
}
}
}else if(cmd.equals("Change Status")){
String text = change_status.getText();
if(text != null)
if(current_profile != null) {
current_profile.setStatus(text);
canvas.displayProfile(current_profile);
canvas.showMessage("Status updated to " + text);
}else {
canvas.removeAll();
canvas.showMessage("Please select a profile to change status");
}
}else if(cmd.equals("Change Picture")){
String text = change_picture.getText();
if(text != null)
if(current_profile != null) {
GImage image = null;
try{
image = new GImage(text);
current_profile.setImage(image);
canvas.displayProfile(current_profile);
canvas.showMessage("Picture updated");
}catch(ErrorException ex){
canvas.showMessage("Unable to open image file: "+ text);
};
}else {
canvas.removeAll();
canvas.showMessage("Please select a profile to change picture");
}
}else if(cmd.equals("Add Friend")){
String text = add_friend.getText();
int f = 0;
if(text != null)
if(current_profile != null){
if(fpdata.containsProfile(text)){
if(!current_profile.addFriend(text))
f = 1;
else if(!fpdata.getProfile(text).addFriend(current_profile.getName()))
f = 2;
canvas.displayProfile(current_profile);
if(f == 1)
canvas.showMessage(current_profile.getName()+" already has " +
text + "as a friend");
else if(f == 2)
canvas.showMessage(text +" already has " +
current_profile.getName() + "as a friend");
else
canvas.showMessage(text +" added as a friend");
}else{
canvas.showMessage(text + " does not exist");
}
}else {
canvas.removeAll();
canvas.showMessage("Please select a profile to add friend");
}
}
}
/** TextField initiate */
private JTextField input_name = new JTextField(TEXT_FIELD_SIZE);
private JTextField change_status = new JTextField(TEXT_FIELD_SIZE);
private JTextField change_picture = new JTextField(TEXT_FIELD_SIZE);
private JTextField add_friend = new JTextField(TEXT_FIELD_SIZE);
private FacePamphletDatabase fpdata;
private FacePamphletProfile current_profile;
private FacePamphletCanvas canvas;
}

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FacePamphletCanvas.java

/*
* File: FacePamphletCanvas.java
* -----------------------------
* This class represents the canvas on which the profiles in the social
* network are displayed. NOTE: This class does NOT need to update the
* display when the window is resized.
*/
import acm.graphics.*;
import java.awt.*;
import java.util.*;
public class FacePamphletCanvas extends GCanvas
implements FacePamphletConstants {
/**
* Constructor
* This method takes care of any initialization needed for
* the display
*/
public FacePamphletCanvas() {
}
/**
* This method displays a message string near the bottom of the
* canvas. Every time this method is called, the previously
* displayed message (if any) is replaced by the new message text
* passed in.
*/
public void showMessage(String msg) {
GLabel ms= new GLabel(msg,getWidth()/2,getHeight()-BOTTOM_MESSAGE_MARGIN);
ms.move(-ms.getWidth()/2, 0);
ms.setFont(MESSAGE_FONT);
if(getElementAt(getWidth()/2,getHeight()-BOTTOM_MESSAGE_MARGIN)!= null)
remove(getElementAt(getWidth()/2,getHeight()-BOTTOM_MESSAGE_MARGIN));
add(ms);
}
/**
* This method displays the given profile on the canvas. The
* canvas is first cleared of all existing items (including
* messages displayed near the bottom of the screen) and then the
* given profile is displayed. The profile display includes the
* name of the user from the profile, the corresponding image
* (or an indication that an image does not exist), the status of
* the user, and a list of the user's friends in the social network.
*/
public void displayProfile(FacePamphletProfile profile) {
removeAll();
/* Name */
GLabel name = new GLabel(profile.getName(),LEFT_MARGIN,TOP_MARGIN);
name.setFont(PROFILE_NAME_FONT);
name.setColor(Color.BLUE);
add(name);
/* Picture */
add(new GRect(LEFT_MARGIN,TOP_MARGIN+IMAGE_MARGIN,IMAGE_WIDTH,IMAGE_HEIGHT));
if(profile.getImage() == null){
GLabel nopic = new GLabel("No Image", LEFT_MARGIN+IMAGE_WIDTH/2,
TOP_MARGIN+IMAGE_MARGIN+IMAGE_HEIGHT/2);
nopic.setFont(PROFILE_IMAGE_FONT);
nopic.move(-nopic.getWidth()/2, -nopic.getAscent()/2);
add(nopic);
}else {
GImage pic = profile.getImage();
pic.scale(IMAGE_WIDTH/pic.getWidth(),IMAGE_HEIGHT/pic.getHeight());
add(pic,LEFT_MARGIN,TOP_MARGIN+IMAGE_MARGIN);
}
/* Status */
String status = profile.getName()+" is "+profile.getStatus();
if( profile.getStatus() == "" ) status = "No current status";
GLabel st = new GLabel(status,
LEFT_MARGIN,TOP_MARGIN+IMAGE_MARGIN+IMAGE_HEIGHT+STATUS_MARGIN);
st.setFont(PROFILE_STATUS_FONT);
add(st);
/* Friends */
double x =getWidth()/2, y=TOP_MARGIN+IMAGE_MARGIN;
GLabel friend_label = new GLabel("Friends:",x,y);
friend_label.setFont(PROFILE_FRIEND_LABEL_FONT);
add(friend_label);
Iterator<String> it = profile.getFriends();
while(it.hasNext()){
GLabel friend = new GLabel(it.next(),x,y);
y += friend.getHeight();
friend.move(0,friend.getHeight());
friend.setFont(PROFILE_FRIEND_FONT);
add(friend);
}
}
}

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File: FacePamphletConstants.java

/*
* File: FacePamphletConstants.java
* --------------------------------
* This file declares several constants that are shared by the
* different modules in the FacePamphlet application. Any class
* that implements this interface can use these constants.
*/
public interface FacePamphletConstants {
/** The width of the application window */
public static final int APPLICATION_WIDTH = 800;
/** The height of the application window */
public static final int APPLICATION_HEIGHT = 500;
/** Number of characters for each of the text input fields */
public static final int TEXT_FIELD_SIZE = 15;
/** Text to be used to create an "empty" label to put space
* between interactors on EAST border of application. Note this
* label is not actually the empty string, but rather a single space */
public static final String EMPTY_LABEL_TEXT = " ";
/** Name of font used to display the application message at the
* bottom of the display canvas */
public static final String MESSAGE_FONT = "Dialog-18";
/** Name of font used to display the name in a user's profile */
public static final String PROFILE_NAME_FONT = "Dialog-24";
/** Name of font used to display the text "No Image" in user
* profiles that do not contain an actual image */
public static final String PROFILE_IMAGE_FONT = "Dialog-24";
/** Name of font used to display the status in a user's profile */
public static final String PROFILE_STATUS_FONT = "Dialog-16-bold";
/** Name of font used to display the label "Friends" above the
* user's list of friends in a profile */
public static final String PROFILE_FRIEND_LABEL_FONT = "Dialog-16-bold";
/** Name of font used to display the names from the user's list
* of friends in a profile */
public static final String PROFILE_FRIEND_FONT = "Dialog-16";
/** The width (in pixels) that profile images should be displayed */
public static final double IMAGE_WIDTH = 200;
/** The height (in pixels) that profile images should be displayed */
public static final double IMAGE_HEIGHT = 200;
/** The number of pixels in the vertical margin between the bottom
* of the canvas display area and the baseline for the message
* text that appears near the bottom of the display */
public static final double BOTTOM_MESSAGE_MARGIN = 20;
/** The number of pixels in the hortizontal margin between the
* left side of the canvas display area and the Name, Image, and
* Status components that are display in the profile */
public static final double LEFT_MARGIN = 20;
/** The number of pixels in the vertical margin between the top
* of the canvas display area and the top (NOT the baseline) of
* the Name component that is displayed in the profile */
public static final double TOP_MARGIN = 30;
/** The number of pixels in the vertical margin between the
* baseline of the Name component and the top of the Image
* displayed in the profile */
public static final double IMAGE_MARGIN = 20;
/** The number of vertical pixels in the vertical margin between
* the bottom of the Image and the top of the Status component
* in the profile */
public static final double STATUS_MARGIN = 20;
}

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FacePamphletDatabase.java

/*
* File: FacePamphletDatabase.java
* -------------------------------
* This class keeps track of the profiles of all users in the
* FacePamphlet application. Note that profile names are case
* sensitive, so that "ALICE" and "alice" are NOT the same name.
*/
import java.util.*;
public class FacePamphletDatabase implements FacePamphletConstants {
/**
* Constructor
* This method takes care of any initialization needed for
* the database.
*/
public FacePamphletDatabase() {
database = new HashMap<String,FacePamphletProfile>();
}
/**
* This method adds the given profile to the database. If the
* name associated with the profile is the same as an existing
* name in the database, the existing profile is replaced by
* the new profile passed in.
*/
public void addProfile(FacePamphletProfile profile) {
if(database.containsKey(profile.getName()))
database.remove(profile.getName());
database.put(profile.getName(), profile);
}
/**
* This method returns the profile associated with the given name
* in the database. If there is no profile in the database with
* the given name, the method returns null.
*/
public FacePamphletProfile getProfile(String name) {
if(database.containsKey(name))
return database.get(name);
return null;
}
/**
* This method removes the profile associated with the given name
* from the database. It also updates the list of friends of all
* other profiles in the database to make sure that this name is
* removed from the list of friends of any other profile.
*
* If there is no profile in the database with the given name, then
* the database is unchanged after calling this method.
*/
public void deleteProfile(String name) {
if(database.containsKey(name)){
/* Remove name from friend list */
Iterator<String> it = database.get(name).getFriends();
while(it.hasNext()) database.get(it.next()).removeFriend(name);
/* Remove profile */
database.remove(name);
}
}
/**
* This method returns true if there is a profile in the database
* that has the given name. It returns false otherwise.
*/
public boolean containsProfile(String name) {
if(database.containsKey(name))
return true;
return false;
}
private HashMap<String, FacePamphletProfile> database;
}

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FacePamphletProfile.java

/*
* File: FacePamphletProfile.java
* ------------------------------
* This class keeps track of all the information for one profile
* in the FacePamphlet social network. Each profile contains a
* name, an image (which may not always be set), a status (what
* the person is currently doing, which may not always be set),
* and a list of friends.
*/
import acm.graphics.*;
import java.util.*;
public class FacePamphletProfile implements FacePamphletConstants {
/**
* Constructor
* This method takes care of any initialization needed for
* the profile.
*/
public FacePamphletProfile(String name) {
this.name = name;
this.status = "";
this.friends = new ArrayList<String>();
}
/** This method returns the name associated with the profile. */
public String getName() {
return this.name;
}
/**
* This method returns the image associated with the profile.
* If there is no image associated with the profile, the method
* returns null. */
public GImage getImage() {
return this.picture;
}
/** This method sets the image associated with the profile. */
public void setImage(GImage image) {
this.picture = image;
}
/**
* This method returns the status associated with the profile.
* If there is no status associated with the profile, the method
* returns the empty string ("").
*/
public String getStatus() {
return this.status;
}
/** This method sets the status associated with the profile. */
public void setStatus(String status) {
this.status = status;
}
/**
* This method adds the named friend to this profile's list of
* friends. It returns true if the friend's name was not already
* in the list of friends for this profile (and the name is added
* to the list). The method returns false if the given friend name
* was already in the list of friends for this profile (in which
* case, the given friend name is not added to the list of friends
* a second time.)
*/
public boolean addFriend(String friend) {
if(this.friends.contains(friend)) return false;
this.friends.add(friend);
return true;
}
/**
* This method removes the named friend from this profile's list
* of friends. It returns true if the friend's name was in the
* list of friends for this profile (and the name was removed from
* the list). The method returns false if the given friend name
* was not in the list of friends for this profile (in which case,
* the given friend name could not be removed.)
*/
public boolean removeFriend(String friend) {
if(this.friends.contains(friend)) return this.friends.remove(friend);
return false;
}
/**
* This method returns an iterator over the list of friends
* associated with the profile.
*/
public Iterator<String> getFriends() {
return this.friends.iterator();
}
/**
* This method returns a string representation of the profile.
* This string is of the form: "name (status): list of friends",
* where name and status are set accordingly and the list of
* friends is a comma separated list of the names of all of the
* friends in this profile.
*
* For example, in a profile with name "Alice" whose status is
* "coding" and who has friends Don, Chelsea, and Bob, this method
* would return the string: "Alice (coding): Don, Chelsea, Bob"
*/
public String toString() {
String result = name + " (" + status + "): ";
Iterator<String> it = this.getFriends();
if(it.hasNext()) result +=it.next();
while(it.hasNext()){result = result + ", " +it.next();}
return result;
}
/* Person's information */
private String name, status;
private ArrayList<String> friends;
private GImage picture = null;
}

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wangtieguo

好东西，值得学习~

jasonilove

FacePamphletProfile

/*
* File: FacePamphletProfile.java
* ------------------------------
* This class keeps track of all the information for one profile
* in the FacePamphlet social network. Each profile contains a
* name, an image (which may not always be set), a status (what
* the person is currently doing, which may not always be set),
* and a list of friends.
*/
import acm.graphics.*;
import java.util.*;
public class FacePamphletProfile implements FacePamphletConstants {
/**
* Constructor
* This method takes care of any initialization needed for
* the profile.
*/
public FacePamphletProfile(String name) {
nameOfProfile=name;
statusOfProfile=null;
imageOfProfile=null;
friendsOfProfile=new ArrayList<String>();
}
/** This method returns the name associated with the profile. */
public String getName() {
return nameOfProfile;
}
/**
* This method returns the image associated with the profile.
* If there is no image associated with the profile, the method
* returns null. */
public GImage getImage() {
return imageOfProfile;
}
/** This method sets the image associated with the profile. */
public void setImage(GImage image) {
imageOfProfile=image;
}
/**
* This method returns the status associated with the profile.
* If there is no status associated with the profile, the method
* returns the empty string ("").
*/
public String getStatus() {
return statusOfProfile;
}
/** This method sets the status associated with the profile. */
public void setStatus(String status) {
statusOfProfile=status;
}
/**
* This method adds the named friend to this profile's list of
* friends. It returns true if the friend's name was not already
* in the list of friends for this profile (and the name is added
* to the list). The method returns false if the given friend name
* was already in the list of friends for this profile (in which
* case, the given friend name is not added to the list of friends
* a second time.)
*/
public boolean addFriend(String friend) {
if(friendsOfProfile.contains(friend)){
return false;
}
else{
friendsOfProfile.add(friend);
return true;
}
}
/**
* This method removes the named friend from this profile's list
* of friends. It returns true if the friend's name was in the
* list of friends for this profile (and the name was removed from
* the list). The method returns false if the given friend name
* was not in the list of friends for this profile (in which case,
* the given friend name could not be removed.)
*/
public boolean removeFriend(String friend) {
if(friendsOfProfile.contains(friend)){
friendsOfProfile.remove(friend);
return true;
}
else{
return false;
}
}
/**
* This method returns an iterator over the list of friends
* associated with the profile.
*/
public Iterator<String> getFriends() {
//if(friendsOfProfile.size()==0){
//return null;
//}
return friendsOfProfile.iterator();
}
/**
* This method returns a string representation of the profile.
* This string is of the form: "name (status): list of friends",
* where name and status are set accordingly and the list of
* friends is a comma separated list of the names of all of the
* friends in this profile.
*
* For example, in a profile with name "Alice" whose status is
* "coding" and who has friends Don, Chelsea, and Bob, this method
* would return the string: "Alice (coding): Don, Chelsea, Bob"
*/
public String toString() {
String friends="";
for(String name:friendsOfProfile){
friends=friends+" "+name;
}
return nameOfProfile+" ("+statusOfProfile+") :"+friends;
}
private String nameOfProfile;
private String statusOfProfile;
private GImage imageOfProfile;
private ArrayList<String> friendsOfProfile;
}

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FacePamphletDatabase

/*
* File: FacePamphletDatabase.java
* -------------------------------
* This class keeps track of the profiles of all users in the
* FacePamphlet application. Note that profile names are case
* sensitive, so that "ALICE" and "alice" are NOT the same name.
*/
import java.util.*;
public class FacePamphletDatabase implements FacePamphletConstants {
/**
* Constructor
* This method takes care of any initialization needed for
* the database.
*/
public FacePamphletDatabase() {
}
/**
* This method adds the given profile to the database. If the
* name associated with the profile is the same as an existing
* name in the database, the existing profile is replaced by
* the new profile passed in.
*/
public void addProfile(FacePamphletProfile profile) {
if(dataBase.containsKey(profile.getName())){
dataBase.remove(profile.getName());
}
dataBase.put(profile.getName(), profile);
}
/**
* This method returns the profile associated with the given name
* in the database. If there is no profile in the database with
* the given name, the method returns null.
*/
public FacePamphletProfile getProfile(String name) {
return dataBase.get(name);
}
/**
* This method removes the profile associated with the given name
* from the database. It also updates the list of friends of all
* other profiles in the database to make sure that this name is
* removed from the list of friends of any other profile.
*
* If there is no profile in the database with the given name, then
* the database is unchanged after calling this method.
*/
public void deleteProfile(String name) {
dataBase.remove(name);
}
/**
* This method returns true if there is a profile in the database
* that has the given name. It returns false otherwise.
*/
public boolean containsProfile(String name) {
return dataBase.containsKey(name);
}
private HashMap<String,FacePamphletProfile> dataBase=new HashMap<String,FacePamphletProfile>();
}

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FacePamphletConstants

/*
* File: FacePamphletConstants.java
* --------------------------------
* This file declares several constants that are shared by the
* different modules in the FacePamphlet application. Any class
* that implements this interface can use these constants.
*/
public interface FacePamphletConstants {
/** The width of the application window */
public static final int APPLICATION_WIDTH = 800;
/** The height of the application window */
public static final int APPLICATION_HEIGHT = 500;
/** Number of characters for each of the text input fields */
public static final int TEXT_FIELD_SIZE = 15;
/** Text to be used to create an "empty" label to put space
* between interactors on EAST border of application. Note this
* label is not actually the empty string, but rather a single space */
public static final String EMPTY_LABEL_TEXT = " ";
/** Name of font used to display the application message at the
* bottom of the display canvas */
public static final String MESSAGE_FONT = "Dialog-18";
/** Name of font used to display the name in a user's profile */
public static final String PROFILE_NAME_FONT = "Dialog-24";
/** Name of font used to display the text "No Image" in user
* profiles that do not contain an actual image */
public static final String PROFILE_IMAGE_FONT = "Dialog-24";
/** Name of font used to display the status in a user's profile */
public static final String PROFILE_STATUS_FONT = "Dialog-16-bold";
/** Name of font used to display the label "Friends" above the
* user's list of friends in a profile */
public static final String PROFILE_FRIEND_LABEL_FONT = "Dialog-16-bold";
/** Name of font used to display the names from the user's list
* of friends in a profile */
public static final String PROFILE_FRIEND_FONT = "Dialog-16";
/** The width (in pixels) that profile images should be displayed */
public static final double IMAGE_WIDTH = 200;
/** The height (in pixels) that profile images should be displayed */
public static final double IMAGE_HEIGHT = 200;
/** The number of pixels in the vertical margin between the bottom
* of the canvas display area and the baseline for the message
* text that appears near the bottom of the display */
public static final double BOTTOM_MESSAGE_MARGIN = 20;
/** The number of pixels in the hortizontal margin between the
* left side of the canvas display area and the Name, Image, and
* Status components that are display in the profile */
public static final double LEFT_MARGIN = 20;
/** The number of pixels in the vertical margin between the top
* of the canvas display area and the top (NOT the baseline) of
* the Name component that is displayed in the profile */
public static final double TOP_MARGIN = 20;
/** The number of pixels in the vertical margin between the
* baseline of the Name component and the top of the Image
* displayed in the profile */
public static final double IMAGE_MARGIN = 20;
/** The number of vertical pixels in the vertical margin between
* the bottom of the Image and the top of the Status component
* in the profile */
public static final double STATUS_MARGIN = 20;
}

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FacePamphletCanvas

/*
* File: FacePamphletCanvas.java
* -----------------------------
* This class represents the canvas on which the profiles in the social
* network are displayed. NOTE: This class does NOT need to update the
* display when the window is resized.
*/
import acm.graphics.*;
import java.awt.*;
import java.util.*;
public class FacePamphletCanvas extends GCanvas
implements FacePamphletConstants {
/**
* Constructor
* This method takes care of any initialization needed for
* the display
*/
public FacePamphletCanvas() {
message=null;
}
public void removeProfile(){
removeAll();
message=null;
}
/**
* This method displays a message string near the bottom of the
* canvas. Every time this method is called, the previously
* displayed message (if any) is replaced by the new message text
* passed in.
*/
public void showMessage(String msg) {
if(message!=null){
remove(message);
}
message=new GLabel(msg);
message.setFont(MESSAGE_FONT);
message.setLocation((getWidth()-message.getWidth())/2,getHeight()-BOTTOM_MESSAGE_MARGIN);
add(message);
}
/**
* This method displays the given profile on the canvas. The
* canvas is first cleared of all existing items (including
* messages displayed near the bottom of the screen) and then the
* given profile is displayed. The profile display includes the
* name of the user from the profile, the corresponding image
* (or an indication that an image does not exist), the status of
* the user, and a list of the user's friends in the social network.
*/
public void displayProfile(FacePamphletProfile profile) {
removeAll();
displayNameOfProfile(profile.getName());
if(profile.getImage()==null){
displayNoImage();
}
else{
displayImage(profile.getImage());
}
displayStatusOfProfile(profile);
displayFriendsOfProfile(profile.getFriends());
showMessage("Displaying "+profile.getName());
}
private void displayFriendsOfProfile(Iterator<String> friends){
GLabel friend=new GLabel("Friends:");
friend.setFont(PROFILE_FRIEND_LABEL_FONT);
add(friend,getWidth()/2,IMAGE_MARGIN+TOP_MARGIN+gname.getAscent());
int i=0;
while(friends.hasNext()){
GLabel newFriend=new GLabel(friends.next());
newFriend.setFont(PROFILE_FRIEND_FONT);
newFriend.setLocation(getWidth()/2,IMAGE_MARGIN+TOP_MARGIN+gname.getAscent()+friend.getAscent()*2);
newFriend.move(0,2*i*newFriend.getAscent());
add(newFriend);
i++;
}
}
private void displayStatusOfProfile(FacePamphletProfile profile){
String status;
if(profile.getStatus()==null){
status="No current status";
}
else{
status=profile.getName()+" is "+profile.getStatus();
}
GLabel gstatus=new GLabel(status);
gstatus.setFont(PROFILE_STATUS_FONT);
add(gstatus,LEFT_MARGIN,IMAGE_MARGIN+TOP_MARGIN+gname.getAscent()+IMAGE_HEIGHT+STATUS_MARGIN);
}
private void displayNoImage(){
add(new GRect(LEFT_MARGIN,IMAGE_MARGIN+TOP_MARGIN+gname.getAscent(),IMAGE_WIDTH,IMAGE_HEIGHT));
GLabel noImage=new GLabel("No Image");
noImage.setFont( PROFILE_IMAGE_FONT);
add(noImage,LEFT_MARGIN+(IMAGE_WIDTH-noImage.getWidth())/2,IMAGE_MARGIN+TOP_MARGIN+gname.getAscent()+(IMAGE_HEIGHT+noImage.getAscent())/2);
}
private void displayImage(GImage image){
image.scale(IMAGE_WIDTH/image.getWidth(), IMAGE_HEIGHT/image.getHeight());
add(image,LEFT_MARGIN,IMAGE_MARGIN+TOP_MARGIN+gname.getAscent());
}
private void displayNameOfProfile(String name){
gname=new GLabel(name);
gname.setFont(PROFILE_NAME_FONT);
gname.setLocation(LEFT_MARGIN,TOP_MARGIN+gname.getAscent());
add(gname);
}
private GLabel gname;
private GLabel message;
}

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FacePamphlet

/*
* File: FacePamphlet.java
* -----------------------
* When it is finished, this program will implement a basic social network
* management system.
*/
import acm.program.*;
import acm.graphics.*;
import acm.util.*;
import java.awt.event.*;
import java.util.ArrayList;
import java.util.*;
import javax.swing.*;
public class FacePamphlet extends Program
implements FacePamphletConstants {
/**
* This method has the responsibility for initializing the
* interactors in the application, and taking care of any other
* initialization that needs to be performed.
*/
public void init() {
database=new FacePamphletDatabase();
add(new JLabel("Name"),NORTH);
name=new JTextField(TEXT_FIELD_SIZE);
add(name,NORTH);
add(new JButton("Add"),NORTH);
add(new JButton("Delete"),NORTH);
add(new JButton("Look up"),NORTH);
changeStatus=new JTextField(TEXT_FIELD_SIZE);
changeStatus.setActionCommand("Change Status");
changePicture=new JTextField(TEXT_FIELD_SIZE);
changePicture.setActionCommand("Change Picture");
addFriend=new JTextField(TEXT_FIELD_SIZE);
addFriend.setActionCommand("Add Friend");
add(changeStatus,WEST);
add(new JButton("Change Status"),WEST);
add(new JLabel(EMPTY_LABEL_TEXT),WEST);
add(changePicture,WEST);
add(new JButton("Change Picture"),WEST);
add(new JLabel(EMPTY_LABEL_TEXT),WEST);
add(addFriend,WEST);
add(new JButton("Add Friend"),WEST);
addActionListeners();
name.addActionListener(this);
changeStatus.addActionListener(this);
changePicture.addActionListener(this);
addFriend.addActionListener(this);
canvas=new FacePamphletCanvas();
add(canvas);
}
/**
* This class is responsible for detecting when the buttons are
* clicked or interactors are used, so you will have to add code
* to respond to these actions.
*/
public void actionPerformed(ActionEvent e) {
if(e.getActionCommand().equals("Add")){
if(!database.containsProfile(name.getText())){
FacePamphletProfile profile=new FacePamphletProfile(name.getText());
database.addProfile(profile);
dealingWith=profile;
canvas.displayProfile(dealingWith);
canvas.showMessage("New profile created");
}
else{
dealingWith=database.getProfile(name.getText());
canvas.displayProfile(dealingWith);
canvas.showMessage("A profile with the name "+dealingWith.getName()+" already exists");
}
}
if(e.getActionCommand().equals("Delete")){
dealingWith=database.getProfile(name.getText());
if(database.getProfile(name.getText())!=null){
Iterator<String> it=dealingWith.getFriends();
while(it.hasNext()){
String nameOfFriend=it.next();
FacePamphletProfile friendProfile=database.getProfile(nameOfFriend);
friendProfile.removeFriend(name.getText());
}
database.deleteProfile(name.getText());
dealingWith=null;
canvas.removeProfile();
canvas.showMessage("Profile of "+name.getText()+" deleted");
}
else{
canvas.showMessage("A profile with the name "+name.getText()+" does not exist");
}
}
if(e.getActionCommand().equals("Look up")){
if(database.containsProfile(name.getText())){
dealingWith=database.getProfile(name.getText());
canvas.displayProfile(dealingWith);
}
else{
canvas.removeProfile();
canvas.showMessage("A profile with the name "+name.getText()+" does not exist");
}
}
if(e.getActionCommand().equals("Change Status")){
if(dealingWith!=null){
dealingWith.setStatus(changeStatus.getText());
canvas.displayProfile(dealingWith);
canvas.showMessage("Status updated to "+changeStatus.getText());
}
else{
canvas.removeProfile();
canvas.showMessage("Please select a profile to change status");
}
}
if(e.getActionCommand().equals("Change Picture")){
if(dealingWith!=null){
try{
dealingWith.setImage(new GImage(changePicture.getText()));
canvas.displayProfile(dealingWith);
canvas.showMessage("Picture updated");
}
catch(ErrorException ex){
canvas.showMessage("Unable to open image file: "+changePicture.getText());
}
}
else{
canvas.removeProfile();
canvas.showMessage("Please select a profile to change picture");
}
}
if(e.getActionCommand().equals("Add Friend")){
if(dealingWith!=null){
if(database.containsProfile(addFriend.getText())&&!(dealingWith.getName().equals(addFriend.getText()))){
dealingWith.addFriend(addFriend.getText());
FacePamphletProfile profile=database.getProfile(addFriend.getText());
boolean notContainsFriend=profile.addFriend(dealingWith.getName());
canvas.displayProfile(dealingWith);
canvas.showMessage(dealingWith.getName()+" added a friend");
if(!notContainsFriend){
canvas.showMessage(dealingWith.getName()+" already has "+addFriend.getText()+" as a friend");
}
}
if(!(database.containsProfile(addFriend.getText()))){
canvas.showMessage(addFriend.getText()+" does not exist");
}
if(dealingWith.getName().equals(addFriend.getText())){
canvas.showMessage("Can not add yourself as a friend.");
}
}
else{
canvas.showMessage("Please select a profile to add friend");
}
}
}
private JTextField name;
private JTextField changeStatus;
private JTextField changePicture;
private JTextField addFriend;
private FacePamphletDatabase database;
private FacePamphletProfile dealingWith;
private FacePamphletCanvas canvas;
}

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nprotect

这次作业依然考察了类之间方法的调用，强调了分解程序的思想，同时也考察了数据库的基本思想，这里就是hashmap。和上一次作业大致相同，不过因为功能更复杂，所以程序更麻烦一些。

nprotect

FacePamphlet.java：

/*
* File: FacePamphlet.java
* -----------------------
* When it is finished, this program will implement a basic social network
* management system.
*/
import acm.program.*;
import acm.graphics.*;
import acm.util.*;
import java.awt.event.*;
import javax.swing.*;
public class FacePamphlet extends Program implements FacePamphletConstants {
/**
* This method has the responsibility for initializing the
* interactors in the application, and taking care of any other
* initialization that needs to be performed.
*/
public void init() {
// NORTH
name = new JLabel ("Name");
add (name, NORTH);
textFieldNorth = new JTextField(TEXT_FIELD_SIZE);
add (textFieldNorth, NORTH);
add = new JButton ("Add");
add (add, NORTH);
delete = new JButton ("Delete");
add (delete, NORTH);
lookup = new JButton ("Lookup");
add (lookup, NORTH);
// WEST
// Change Status
textFieldWest1 = new JTextField (TEXT_FIELD_SIZE);
add (textFieldWest1, WEST);
status = new JButton ("Change Status");
add (status, WEST);
add( new JLabel(EMPTY_LABEL_TEXT), WEST);
// Change Picture
textFieldWest2 = new JTextField (TEXT_FIELD_SIZE);
add (textFieldWest2, WEST);
picture = new JButton ("Change Picture");
add (picture, WEST);
add( new JLabel(EMPTY_LABEL_TEXT), WEST);
// Add Friend
textFieldWest3 = new JTextField (TEXT_FIELD_SIZE);
add (textFieldWest3, WEST);
friend = new JButton ("Add Friend");
add (friend, WEST);
add( new JLabel(EMPTY_LABEL_TEXT), WEST);
// West region need "Enter" function
textFieldWest1.addActionListener(this);
textFieldWest2.addActionListener(this);
textFieldWest3.addActionListener(this);
// ActionListerners
addActionListeners();
// canvas
add(canvas);
}
/**
* This class is responsible for detecting when the buttons are
* clicked or interactors are used, so you will have to add code
* to respond to these actions.
*/
public void actionPerformed(ActionEvent e) {
String cmd = e.getActionCommand();
// North region
// Add button
if (cmd.equals("Add")) {
if (data.containsProfile(textFieldNorth.getText())){
currentProfile = data.getProfile(textFieldNorth.getText()); // if exist, add = look up
canvas.displayProfile(currentProfile);
canvas.showMessage("A profile with the name<" + currentProfile.getName() + ">already exists");
}
else {
currentProfile = new FacePamphletProfile(textFieldNorth.getText());// if do not exist, new a FacePamphletProfile
data.addProfile(currentProfile);
canvas.displayProfile(currentProfile);
canvas.showMessage("New profile created");
}
}
// Delete button
if (cmd.equals("Delete")) {
if (data.containsProfile(textFieldNorth.getText())){
data.deleteProfile(textFieldNorth.getText());
canvas.removeAll(); // clear any existing profile from the display
canvas.showMessage("Profile of <" +textFieldNorth.getText()+ ">deleted");
currentProfile = null;
} else {
canvas.removeAll();
canvas.showMessage("A profile with the name<" + textFieldNorth.getText() + ">does not exist");
currentProfile = null;
}
}
// Lookup button
if (cmd.equals("Lookup")) {
if (data.containsProfile(textFieldNorth.getText())) {
currentProfile = data.getProfile(textFieldNorth.getText());
canvas.displayProfile(currentProfile);
canvas.showMessage("Displaying<" + currentProfile.getName() + ">");
} else {
canvas.removeAll();
canvas.showMessage("A profile with the name<" + textFieldNorth.getText() + ">does not exist");
currentProfile = null;
}
}
// West region
// Change Status button
if ((cmd.equals("Change Status"))||(e.getSource() == textFieldWest1)) { // Change status button
if (currentProfile != null){
currentProfile.setStatus(textFieldWest1.getText());
canvas.displayProfile(currentProfile);
canvas.showMessage("Status updated to<" + currentProfile.getStatus() + ">");
}
else {
canvas.showMessage("Please select a profile to change status");
}
}
// Change Picture button
if ((cmd.equals("Change Picture"))||(e.getSource() == textFieldWest2)) { // Change picture button
if (currentProfile != null){
GImage image = null;
try{
image = new GImage (textFieldWest2.getText());
currentProfile.setImage(image);
canvas.displayProfile(currentProfile);
canvas.showMessage("Picture updated");
} catch (ErrorException ex) {
canvas.showMessage("Unable to open image file:<" + textFieldWest2.getText() + ">");
}
} else {
canvas.removeAll();
canvas.showMessage("Please select a profile to change picture");
}
}
// Add Friend button
if ((cmd.equals("Add Friend"))||(e.getSource() == textFieldWest3)) {
if (currentProfile != null) {
if (data.containsProfile(textFieldWest3.getText())){ // judge the status of added profile
boolean b = currentProfile.addFriend(textFieldWest3.getText());
if (b == false) {
canvas.showMessage("<" + currentProfile.getName() + ">already has " + "<" + textFieldWest3.getText() + ">as a friend");
}
if (b == true) {
(data.getProfile(textFieldWest3.getText())).addFriend(currentProfile.getName()); // revise adding friend! IMPORTANT
canvas.displayProfile(currentProfile);
canvas.showMessage ("<" + textFieldWest3.getText() + ">added as a friend");
}
} else {
canvas.showMessage("<" + textFieldWest3.getText() + ">does not exist");
}
} else {
canvas.removeAll();
canvas.showMessage("Please select a profile to add friend");
}
}
}
/** instance variable*/
// North
private JLabel name;
private JTextField textFieldNorth;
private JButton add;
private JButton delete;
private JButton lookup;
// West
private JTextField textFieldWest1;
private JTextField textFieldWest2;
private JTextField textFieldWest3;
private JButton status;
private JButton picture;
private JButton friend;
// Current Profile
private FacePamphletProfile currentProfile;
private FacePamphletDatabase data = new FacePamphletDatabase();
// Canvas
private FacePamphletCanvas canvas = new FacePamphletCanvas();
}

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FacePamphletProfile.java：

/*
* File: FacePamphletProfile.java
* ------------------------------
* This class keeps track of all the information for one profile
* in the FacePamphlet social network. Each profile contains a
* name, an image (which may not always be set), a status (what
* the person is currently doing, which may not always be set),
* and a list of friends.
*/
import acm.graphics.*;
import java.util.*;
public class FacePamphletProfile implements FacePamphletConstants {
/**
* Constructor
* This method takes care of any initialization needed for
* the profile.
*/
public FacePamphletProfile(String name) { // input name,
this.name = name; // left "name" is defined in this class, right "name" is passed in
this.status = "";
this.image = null;
}
/** This method returns the name associated with the profile. */
public String getName() {
return this.name;
}
/**
* This method returns the image associated with the profile.
* If there is no image associated with the profile, the method
* returns null. */
public GImage getImage() {
return this.image;
}
/** This method sets the image associated with the profile. */
public void setImage(GImage image) {
this.image = image;
}
/**
* This method returns the status associated with the profile.
* If there is no status associated with the profile, the method
* returns the empty string ("").
*/
public String getStatus() {
return this.status;
}
/** This method sets the status associated with the profile. */
public void setStatus(String status) {
this.status = status;
}
/**
* This method adds the named friend to this profile's list of
* friends. It returns true if the friend's name was not already
* in the list of friends for this profile (and the name is added
* to the list). The method returns false if the given friend name
* was already in the list of friends for this profile (in which
* case, the given friend name is not added to the list of friends
* a second time.)
*/
public boolean addFriend(String friend) {
if (friendsList.contains(friend)) return false;
friendsList.add(friend); return true;
}
/**
* This method removes the named friend from this profile's list
* of friends. It returns true if the friend's name was in the
* list of friends for this profile (and the name was removed from
* the list). The method returns false if the given friend name
* was not in the list of friends for this profile (in which case,
* the given friend name could not be removed.)
*/
public boolean removeFriend(String friend) { // remove one friend from the list
if (friendsList.contains(friend)) {
friendsList.remove(friend);
return true;
}
return false;
}
/**
* This method returns an iterator over the list of friends
* associated with the profile.
*/
public Iterator<String> getFriends() {
return friendsList.iterator(); // return an iterator
}
/**
* This method returns a string representation of the profile.
* This string is of the form: "name (status): list of friends",
* where name and status are set accordingly and the list of
* friends is a comma separated list of the names of all of the
* friends in this profile.
*
* For example, in a profile with name "Alice" whose status is
* "coding" and who has friends Don, Chelsea, and Bob, this method
* would return the string: "Alice (coding): Don, Chelsea, Bob"
*/
public String toString() {
String line = "";
line = "\"" + name + " (" + status + "): ";
Iterator<String> it = getFriends(); // object of the Iterator: "it"
if (it.hasNext()) line = line + it.next();
while (it.hasNext()){
line = line + "," + it.next();
}
line = line + "\"";
return line;
}
/** instance variable*/
private String name;
private String status;
private GImage image;
ArrayList<String> friendsList = new ArrayList <String>(); // each people's list of friends store in "friendList"
}

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FacePamphletDatabase.java：

/*
* File: FacePamphletDatabase.java
* -------------------------------
* This class keeps track of the profiles of all users in the
* FacePamphlet application. Note that profile names are case
* sensitive, so that "ALICE" and "alice" are NOT the same name.
*/
import java.util.*;
/** this class has 4 methods: "add, delete,get, contains" */
public class FacePamphletDatabase implements FacePamphletConstants {
/**
* Constructor
* This method takes care of any initialization needed for
* the database.
*/
public FacePamphletDatabase() {
// null
}
/**
* This method adds the given profile to the database. If the
* name associated with the profile is the same as an existing
* name in the database, the existing profile is replaced by
* the new profile passed in.
*/
public void addProfile(FacePamphletProfile profile) {
if (database.containsKey(profile.getName())) database.remove(profile.getName());
database.put(profile.getName(), profile);
}
/**
* This method returns the profile associated with the given name
* in the database. If there is no profile in the database with
* the given name, the method returns null.
*/
public FacePamphletProfile getProfile(String name) {
if (database.containsKey(name)) return database.get(name);
return null;
}
/**
* This method removes the profile associated with the given name
* from the database. It also updates the list of friends of all
* other profiles in the database to make sure that this name is
* removed from the list of friends of any other profile.
*
* If there is no profile in the database with the given name, then
* the database is unchanged after calling this method.
*/
public void deleteProfile(String name) { // THIS IS IMPORTANT!
if (database.containsKey(name)){
Iterator<String> it = database.get(name).getFriends(); // set an iterator "it" which represents all of input name's friends
while (it.hasNext()){ // it.hasNext() is a String of input name's friend's name
database.get(it.next()).removeFriend(name);
}
}
database.remove(name);
}
/**
* This method returns true if there is a profile in the database
* that has the given name. It returns false otherwise.
*/
public boolean containsProfile(String name) {
if (database.containsKey(name)) return true;
return false;
}
/** instance variable*/
private HashMap<String, FacePamphletProfile> database = new HashMap<String, FacePamphletProfile>(); // correspond name & Profile in HashMap
}

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FacePamphletCanvas.java：

/*
* File: FacePamphletCanvas.java
* -----------------------------
* This class represents the canvas on which the profiles in the social
* network are displayed. NOTE: This class does NOT need to update the
* display when the window is resized.
*/
import acm.graphics.*;
import java.awt.*;
import java.util.*;
public class FacePamphletCanvas extends GCanvas implements FacePamphletConstants {
/**
* Constructor
* This method takes care of any initialization needed for
* the display
*/
public FacePamphletCanvas() {
// null
}
/**
* This method displays a message string near the bottom of the
* canvas. Every time this method is called, the previously
* displayed message (if any) is replaced by the new message text
* passed in.
*/
public void showMessage(String msg) { // if called, delete current message and add the new one
message = new GLabel(msg,getWidth()/2, getHeight()-BOTTOM_MESSAGE_MARGIN);
message.move(-message.getWidth()/2, 0);
message.setFont(MESSAGE_FONT);
if (getElementAt(getWidth()/2,getHeight()-BOTTOM_MESSAGE_MARGIN) != null) {
remove(getElementAt(getWidth()/2,getHeight()-BOTTOM_MESSAGE_MARGIN));
}
add(message);
}
/**
* This method displays the given profile on the canvas. The
* canvas is first cleared of all existing items (including
* messages displayed near the bottom of the screen) and then the
* given profile is displayed. The profile display includes the
* name of the user from the profile, the corresponding image
* (or an indication that an image does not exist), the status of
* the user, and a list of the user's friends in the social network.
*/
public void displayProfile(FacePamphletProfile profile) {
removeAll();
// update name
name = new GLabel(profile.getName(), LEFT_MARGIN, TOP_MARGIN);
name.move(0, name.getHeight());
name.setFont(PROFILE_NAME_FONT);
name.setColor(Color.blue);
add(name);
// update picture
add(new GRect(LEFT_MARGIN, TOP_MARGIN+IMAGE_MARGIN+name.getHeight(), IMAGE_WIDTH, IMAGE_HEIGHT));
if (profile.getImage() == null){
noPicture = new GLabel ("NO IMAGE!", LEFT_MARGIN+IMAGE_WIDTH/2, TOP_MARGIN+IMAGE_MARGIN+name.getHeight()+IMAGE_HEIGHT/2);
noPicture.move(-noPicture.getWidth(), 0);
noPicture.setFont(PROFILE_IMAGE_FONT);
add(noPicture);
} else {
image = profile.getImage();
add(image, LEFT_MARGIN, TOP_MARGIN+IMAGE_MARGIN+name.getHeight());
}
// update status
if (profile.getStatus()== ""){
status = new GLabel("No current status", LEFT_MARGIN, TOP_MARGIN+IMAGE_MARGIN+name.getHeight()+IMAGE_HEIGHT+STATUS_MARGIN);
status.move(0, status.getHeight());
status.setFont(PROFILE_STATUS_FONT);
add(status);
} else {
status = new GLabel(profile.getName()+" is "+profile.getStatus(), LEFT_MARGIN, TOP_MARGIN+IMAGE_MARGIN+name.getHeight()+IMAGE_HEIGHT+STATUS_MARGIN);
status.move(0, status.getHeight());
add(status);
}
// Friends Label
friendsLabel = new GLabel("Friends: ", getWidth()/2, TOP_MARGIN+IMAGE_MARGIN+name.getHeight());
friendsLabel.setFont(PROFILE_FRIEND_LABEL_FONT);
add(friendsLabel);
// update friend
Iterator<String> it = profile.getFriends();
double y = TOP_MARGIN+IMAGE_MARGIN+name.getHeight();
while (it.hasNext()){
friends = new GLabel (it.next());
friends.setFont(PROFILE_FRIEND_FONT);
y = y + friends.getHeight();
add(friends, getWidth()/2,y);
}
}
/** instance variable*/
private GLabel message;
private GLabel name;
private GLabel noPicture;
private GImage image;
private GLabel status;
private GLabel friendsLabel;
private GLabel friends;
}

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FacePamphletConstants.java：

/*
* File: FacePamphletConstants.java
* --------------------------------
* This file declares several constants that are shared by the
* different modules in the FacePamphlet application. Any class
* that implements this interface can use these constants.
*/
public interface FacePamphletConstants {
/** The width of the application window */
public static final int APPLICATION_WIDTH = 800;
/** The height of the application window */
public static final int APPLICATION_HEIGHT = 500;
/** Number of characters for each of the text input fields */
public static final int TEXT_FIELD_SIZE = 15;
/** Text to be used to create an "empty" label to put space
* between interactors on EAST border of application. Note this
* label is not actually the empty string, but rather a single space */
public static final String EMPTY_LABEL_TEXT = " ";
/** Name of font used to display the application message at the
* bottom of the display canvas */
public static final String MESSAGE_FONT = "Dialog-18";
/** Name of font used to display the name in a user's profile */
public static final String PROFILE_NAME_FONT = "Dialog-24";
/** Name of font used to display the text "No Image" in user
* profiles that do not contain an actual image */
public static final String PROFILE_IMAGE_FONT = "Dialog-24";
/** Name of font used to display the status in a user's profile */
public static final String PROFILE_STATUS_FONT = "Dialog-16-bold";
/** Name of font used to display the label "Friends" above the
* user's list of friends in a profile */
public static final String PROFILE_FRIEND_LABEL_FONT = "Dialog-16-bold";
/** Name of font used to display the names from the user's list
* of friends in a profile */
public static final String PROFILE_FRIEND_FONT = "Dialog-16";
/** The width (in pixels) that profile images should be displayed */
public static final double IMAGE_WIDTH = 200;
/** The height (in pixels) that profile images should be displayed */
public static final double IMAGE_HEIGHT = 200;
/** The number of pixels in the vertical margin between the bottom
* of the canvas display area and the baseline for the message
* text that appears near the bottom of the display */
public static final double BOTTOM_MESSAGE_MARGIN = 20;
/** The number of pixels in the hortizontal margin between the
* left side of the canvas display area and the Name, Image, and
* Status components that are display in the profile */
public static final double LEFT_MARGIN = 20;
/** The number of pixels in the vertical margin between the top
* of the canvas display area and the top (NOT the baseline) of
* the Name component that is displayed in the profile */
public static final double TOP_MARGIN = 20;
/** The number of pixels in the vertical margin between the
* baseline of the Name component and the top of the Image
* displayed in the profile */
public static final double IMAGE_MARGIN = 20;
/** The number of vertical pixels in the vertical margin between
* the bottom of the Image and the top of the Status component
* in the profile */
public static final double STATUS_MARGIN = 20;
}

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西红柿鸡蛋

这次写的各种犯智障，时间远远超出预期，一脸血和泪和一股想死的冲动

/*
* File: FacePamphlet.java
* -----------------------
* When it is finished, this program will implement a basic social network
* management system.
*/
import acm.program.*;
import acm.graphics.*;
import acm.util.*;
import java.awt.GridLayout;
import java.awt.event.*;
import javax.swing.*;
public class FacePamphlet extends Program
implements FacePamphletConstants {
/**
* This method has the responsibility for initializing the
* interactors in the application, and taking care of any other
* initialization that needs to be performed.
*/
public void init() {
database=new FacePamphletDatabase();
// You fill this in
Name=new JTextField(TEXT_FIELD_SIZE);
Name.addActionListener(this);
add(new JLabel ("Name"),NORTH);
add(Name,NORTH);
Add=new JButton("Add");
Delete=new JButton("Delete");
Lookup=new JButton("Lookup");
add(Add,NORTH);
add(Delete,NORTH);
add(Lookup,NORTH);
status=new JTextField(TEXT_FIELD_SIZE);
status.setActionCommand("Change Status");
status.addActionListener(this);
picture=new JTextField(TEXT_FIELD_SIZE);
picture.setActionCommand("Change Picture");
picture.addActionListener(this);
addfriend=new JTextField(TEXT_FIELD_SIZE);
addfriend.setActionCommand("Add Friend");
addfriend.addActionListener(this);
Status=new JButton("Change Status");
Picture=new JButton("Change Picture");
AddFriend=new JButton("Add Friend");
add(status,WEST);
add(Status,WEST);
add(new JLabel(EMPTY_LABEL_TEXT), WEST);
add(picture,WEST);
add(Picture,WEST);
add(new JLabel(EMPTY_LABEL_TEXT), WEST);
add(addfriend,WEST);
add(AddFriend,WEST);
addActionListeners();
setLayout(new GridLayout(1,1));
canvas=new FacePamphletCanvas();
add(canvas);
}
/**
* This class is responsible for detecting when the buttons are
* clicked or interactors are used, so you will have to add code
* to respond to these actions.
*/
public void actionPerformed(ActionEvent e) {
// You fill this in as well as add any additional methods
String cmd=e.getActionCommand();
if(cmd.equals("Add")){
if(Name.getText().equals("")==false){
if(!database.containsProfile(Name.getText())){
FacePamphletProfile NAME=new FacePamphletProfile(Name.getText());
database.addProfile(NAME);
canvas.displayProfile(NAME);
canvas.showMessage("User "+Name.getText()+" added");
} else {
canvas.showMessage("User "+Name.getText()+" already exists,try again");
}
}
}
if(cmd.equals("Delete")){
if(Name.getText().equals("")==false){
if(database.containsProfile(Name.getText())){
database.deleteProfile(Name.getText());
canvas.showMessage("User "+Name.getText()+" deleted");
} else {
canvas.showMessage("User "+Name.getText()+" not exists");
}
}
}
if(cmd.equals("Lookup")){
if(Name.getText().equals("")==false){
if(database.containsProfile(Name.getText())){
canvas.displayProfile(database.getProfile(Name.getText()));
canvas.showMessage("Displaying "+Name.getText());
//println("lookup:"+Name.getText());
}
else{
canvas.showMessage("User "+Name.getText()+" not exists");
}
}
}
if(cmd.equals("Change Status")){
if(status.getText().equals("")==false){
if(database.getProfile(Name.getText())!=null){
database.getProfile(Name.getText()).setStatus(status.getText());
canvas.displayProfile(database.getProfile(Name.getText()));
canvas.showMessage("Status changed");
} else {
canvas.showMessage("User does not exist");
}
}
}
if(cmd.equals("Change Picture")){
GImage image=null;
if(picture.getText().equals("")==false){
if(database.getProfile(Name.getText())!=null){
//println("changepic:"+picture.getText());
try{
image=new GImage(picture.getText());
} catch (ErrorException ex){
canvas.showMessage("image not found");
}
database.getProfile(Name.getText()).setImage(image);
canvas.displayProfile(database.getProfile(Name.getText()));
} else {
canvas.showMessage("User does not exist");
}
//since the thing transfer is Gimage, need rewrite
}
}
if(cmd.equals("Add Friend")){
if(addfriend.getText().equals("")==false){
//println("addfriend:"+addfriend.getText());
if(database.getProfile(Name.getText())!=null && database.getProfile(addfriend.getText()) !=null){
database.getProfile(Name.getText()).addFriend(addfriend.getText());
database.getProfile(addfriend.getText()).addFriend(Name.getText());
canvas.displayProfile(database.getProfile(Name.getText()));
} else {
canvas.showMessage("Either of the names does not exist");
}
}
}
}
private FacePamphletCanvas canvas;
private FacePamphletDatabase database;
private JTextField status;
private JButton Status;
private JTextField picture;
private JButton Picture;
private JTextField addfriend;
private JButton AddFriend;
private JTextField Name;
private JButton Add;
private JButton Delete;
private JButton Lookup;
}

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/*
* File: FacePamphletCanvas.java
* -----------------------------
* This class represents the canvas on which the profiles in the social
* network are displayed. NOTE: This class does NOT need to update the
* display when the window is resized.
*/
import acm.graphics.*;
import java.awt.*;
import java.util.*;
public class FacePamphletCanvas extends GCanvas
implements FacePamphletConstants {
/**
* Constructor
* This method takes care of any initialization needed for
* the display
*/
public FacePamphletCanvas() {
// You fill this in
name=new GLabel("");
status=new GLabel("");
Friends=new GLabel("Friends:");
}
/**
* This method displays a message string near the bottom of the
* canvas. Every time this method is called, the previously
* displayed message (if any) is replaced by the new message text
* passed in.
*/
public void showMessage(String msg) {
if(message!=null){
remove(message);
}
// You fill this in
message=new GLabel(msg);
message.setFont(MESSAGE_FONT);
add(message,getWidth()/2,getHeight()-message.getAscent()-BOTTOM_MESSAGE_MARGIN);
}
/**
* This method displays the given profile on the canvas. The
* canvas is first cleared of all existing items (including
* messages displayed near the bottom of the screen) and then the
* given profile is displayed. The profile display includes the
* name of the user from the profile, the corresponding image
* (or an indication that an image does not exist), the status of
* the user, and a list of the user's friends in the social network.
*/
public void displayProfile(FacePamphletProfile profile) {
removeAll();
name=new GLabel(profile.getName());
name.setColor(Color.BLUE);
name.setFont(PROFILE_NAME_FONT);
add(name,LEFT_MARGIN,TOP_MARGIN+name.getAscent());
if(profile.getImage()!=null){
profile.getImage().scale(IMAGE_WIDTH/profile.getImage().getWidth(),IMAGE_HEIGHT/profile.getImage().getHeight());
add(profile.getImage(),LEFT_MARGIN,IMAGE_MARGIN+TOP_MARGIN+name.getAscent());
} else {
GRect rect=new GRect(LEFT_MARGIN,IMAGE_MARGIN+TOP_MARGIN+name.getAscent(),IMAGE_WIDTH,IMAGE_HEIGHT);
add(rect);
GLabel noim=new GLabel("No Image");
noim.setFont(PROFILE_IMAGE_FONT);
add(noim,LEFT_MARGIN+IMAGE_WIDTH/2-noim.getWidth()/2,IMAGE_MARGIN+IMAGE_HEIGHT/2-noim.getHeight()/2+TOP_MARGIN+name.getAscent());
}
if(profile.getStatus()!=null){
status=new GLabel(profile.getName()+ " is "+profile.getStatus());
}
status.setFont(PROFILE_STATUS_FONT);
add(status,LEFT_MARGIN,STATUS_MARGIN+IMAGE_MARGIN+IMAGE_HEIGHT+TOP_MARGIN+name.getAscent());
Friends.setFont(PROFILE_FRIEND_LABEL_FONT);
add(Friends, getWidth()/2,IMAGE_MARGIN-Friends.getAscent()+TOP_MARGIN+name.getAscent());
int i=0;
Iterator <String> it=profile.getFriends();
while(it.hasNext()){
GLabel friend=new GLabel(it.next());
friend.setLocation(getWidth()/2,IMAGE_MARGIN+TOP_MARGIN+name.getAscent()+i*friend.getHeight());
i++;
add(friend);
}
// You fill this in
}
private GLabel Friends;
private GLabel status;
private GLabel name;
private GLabel message;
}

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/*
* File: FacePamphletProfile.java
* ------------------------------
* This class keeps track of all the information for one profile
* in the FacePamphlet social network. Each profile contains a
* name, an image (which may not always be set), a status (what
* the person is currently doing, which may not always be set),
* and a list of friends.
*/
import acm.graphics.*;
import java.util.*;
public class FacePamphletProfile implements FacePamphletConstants {
/**
* Constructor
* This method takes care of any initialization needed for
* the profile.
*/
public FacePamphletProfile(String Name) {
// You fill this in
name=Name;
status="null";
image=null;
friends=new ArrayList<String>();
}
/** This method returns the name associated with the profile. */
public String getName() {
// You fill this in. Currently always returns the empty string.
return name;
}
/**
* This method returns the image associated with the profile.
* If there is no image associated with the profile, the method
* returns null. */
public GImage getImage() {
// You fill this in. Currently always returns null.
return image;
}
/** This method sets the image associated with the profile. */
public void setImage(GImage Image) {
// You fill this in
image=Image;
}
/**
* This method returns the status associated with the profile.
* If there is no status associated with the profile, the method
* returns the empty string ("").
*/
public String getStatus() {
// You fill this in. Currently always returns the empty string.
return status;
}
/** This method sets the status associated with the profile. */
public void setStatus(String Status) {
// You fill this in
status=Status;
}
/**
* This method adds the named friend to this profile's list of
* friends. It returns true if the friend's name was not already
* in the list of friends for this profile (and the name is added
* to the list). The method returns false if the given friend name
* was already in the list of friends for this profile (in which
* case, the given friend name is not added to the list of friends
* a second time.)
*/
public boolean addFriend(String friend) {
// You fill this in. Currently always returns true.
it=friends.iterator();
while(it.hasNext()){
String test=it.next();
if(test.equals(friend)) return false;
}
friends.add(friend);
return true;
// need to ask whether it will return false for any case, or return false for some point and iterate until
//finish, then return true; same for removeFriend()
}
/**
* This method removes the named friend from this profile's list
* of friends. It returns true if the friend's name was in the
* list of friends for this profile (and the name was removed from
* the list). The method returns false if the given friend name
* was not in the list of friends for this profile (in which case,
* the given friend name could not be removed.)
*/
public boolean removeFriend(String friend) {
// You fill this in. Currently always returns false.
it=friends.iterator();
while(it.hasNext()){
String test=it.next();
if(friend.equals(test)){
friends.remove(friend);
return true;
}
}
return false;
}
/**
* This method returns an iterator over the list of friends
* associated with the profile.
*/
public Iterator<String> getFriends() {
// You fill this in. Currently always returns null.
return friends.iterator();
}
/**
* This method returns a string representation of the profile.
* This string is of the form: "name (status): list of friends",
* where name and status are set accordingly and the list of
* friends is a comma separated list of the names of all of the
* friends in this profile.
*
* For example, in a profile with name "Alice" whose status is
* "coding" and who has friends Don, Chelsea, and Bob, this method
* would return the string: "Alice (coding): Don, Chelsea, Bob"
*/
public String toString() {
// You fill this in. Currently always returns the empty string.
String friendlist="";
it=friends.iterator();
while(it.hasNext()){
String temp=it.next();
friendlist=temp+", "+friendlist;
}
return name+" ("+status+"): "+friendlist;
}
public ArrayList<String> friends;
private Iterator<String> it;
private GImage image;
private String name;
private String status;
}

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/*
* File: FacePamphletDatabase.java
* -------------------------------
* This class keeps track of the profiles of all users in the
* FacePamphlet application. Note that profile names are case
* sensitive, so that "ALICE" and "alice" are NOT the same name.
*/
import java.util.*;
public class FacePamphletDatabase implements FacePamphletConstants {
/**
* Constructor
* This method takes care of any initialization needed for
* the database.
*/
public FacePamphletDatabase() {
// You fill this in
//namelist=new ArrayList<FacePamphletProfile>();
}
/**
* This method adds the given profile to the database. If the
* name associated with the profile is the same as an existing
* name in the database, the existing profile is replaced by
* the new profile passed in.
*/
public void addProfile(FacePamphletProfile Profile) {
namelist.put(Profile.getName(),Profile);
// You fill this in
}
/**
* This method returns the profile associated with the given name
* in the database. If there is no profile in the database with
* the given name, the method returns null.
*/
public FacePamphletProfile getProfile(String name) {
if(namelist.containsKey(name)){
return(namelist.get(name));
}
return null;
}
/**
* This method removes the profile associated with the given name
* from the database. It also updates the list of friends of all
* other profiles in the database to make sure that this name is
* removed from the list of friends of any other profile.
*
* If there is no profile in the database with the given name, then
* the database is unchanged after calling this method.
*/
public void deleteProfile(String name) {
if(namelist.containsKey(name)) namelist.remove(name);
it=namelist.keySet().iterator();
while(it.hasNext()){
String temp=it.next();
while(namelist.get(temp).getFriends().hasNext()){
String friend=namelist.get(temp).getFriends().next();
if(name.equals(friend)) namelist.get(temp).removeFriend(name);
}
}
}
/**
* This method returns true if there is a profile in the database
* that has the given name. It returns false otherwise.
*/
public boolean containsProfile(String name) {
if(namelist.containsKey(name)) return true;
else return false;
}
private HashMap <String,FacePamphletProfile> namelist=new HashMap<String,FacePamphletProfile>();
//private ArrayList <FacePamphletProfile> namelist;
private Iterator<String> it;
}

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