| /* |
| * Copyright 2010 Google Inc. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); you may not |
| * use this file except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT |
| * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the |
| * License for the specific language governing permissions and limitations under |
| * the License. |
| */ |
| package com.google.gwt.sample.showcase.client.content.cell; |
| |
| import com.google.gwt.core.client.GWT; |
| import com.google.gwt.i18n.client.Constants; |
| import com.google.gwt.user.client.Random; |
| import com.google.gwt.view.client.HasData; |
| import com.google.gwt.view.client.ListDataProvider; |
| import com.google.gwt.view.client.ProvidesKey; |
| |
| import java.util.ArrayList; |
| import java.util.Date; |
| import java.util.HashMap; |
| import java.util.HashSet; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| /** |
| * The data source for contact information used in the sample. |
| */ |
| public class ContactDatabase { |
| |
| /** |
| * A contact category. |
| */ |
| public static class Category { |
| |
| private final String displayName; |
| |
| private Category(String displayName) { |
| this.displayName = displayName; |
| } |
| |
| public String getDisplayName() { |
| return displayName; |
| } |
| } |
| |
| /** |
| * Information about a contact. |
| */ |
| public static class ContactInfo implements Comparable<ContactInfo> { |
| |
| /** |
| * The key provider that provides the unique ID of a contact. |
| */ |
| public static final ProvidesKey<ContactInfo> KEY_PROVIDER = new ProvidesKey<ContactInfo>() { |
| @Override |
| public Object getKey(ContactInfo item) { |
| return item == null ? null : item.getId(); |
| } |
| }; |
| |
| private static int nextId = 0; |
| |
| private String address; |
| private int age; |
| private Date birthday; |
| private Category category; |
| private String firstName; |
| private final int id; |
| private String lastName; |
| |
| public ContactInfo(Category category) { |
| this.id = nextId; |
| nextId++; |
| setCategory(category); |
| } |
| |
| @Override |
| public int compareTo(ContactInfo o) { |
| return (o == null || o.firstName == null) ? -1 : -o.firstName.compareTo(firstName); |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (o instanceof ContactInfo) { |
| return id == ((ContactInfo) o).id; |
| } |
| return false; |
| } |
| |
| /** |
| * @return the contact's address |
| */ |
| public String getAddress() { |
| return address; |
| } |
| |
| /** |
| * @return the contact's age |
| */ |
| public int getAge() { |
| return age; |
| } |
| |
| /** |
| * @return the contact's birthday |
| */ |
| public Date getBirthday() { |
| return birthday; |
| } |
| |
| /** |
| * @return the category of the conteact |
| */ |
| public Category getCategory() { |
| return category; |
| } |
| |
| /** |
| * @return the contact's firstName |
| */ |
| public String getFirstName() { |
| return firstName; |
| } |
| |
| /** |
| * @return the contact's full name |
| */ |
| public final String getFullName() { |
| return firstName + " " + lastName; |
| } |
| |
| /** |
| * @return the unique ID of the contact |
| */ |
| public int getId() { |
| return this.id; |
| } |
| |
| /** |
| * @return the contact's lastName |
| */ |
| public String getLastName() { |
| return lastName; |
| } |
| |
| @Override |
| public int hashCode() { |
| return id; |
| } |
| |
| /** |
| * Set the contact's address. |
| * |
| * @param address the address |
| */ |
| public void setAddress(String address) { |
| this.address = address; |
| } |
| |
| /** |
| * Set the contact's birthday. |
| * |
| * @param birthday the birthday |
| */ |
| @SuppressWarnings("deprecation") |
| public void setBirthday(Date birthday) { |
| this.birthday = birthday; |
| |
| // Recalculate the age. |
| Date today = new Date(); |
| this.age = today.getYear() - birthday.getYear(); |
| if (today.getMonth() > birthday.getMonth() |
| || (today.getMonth() == birthday.getMonth() && today.getDate() > birthday.getDate())) { |
| this.age--; |
| } |
| } |
| |
| /** |
| * Set the contact's category. |
| * |
| * @param category the category to set |
| */ |
| public void setCategory(Category category) { |
| assert category != null : "category cannot be null"; |
| this.category = category; |
| } |
| |
| /** |
| * Set the contact's first name. |
| * |
| * @param firstName the firstName to set |
| */ |
| public void setFirstName(String firstName) { |
| this.firstName = firstName; |
| } |
| |
| /** |
| * Set the contact's last name. |
| * |
| * @param lastName the lastName to set |
| */ |
| public void setLastName(String lastName) { |
| this.lastName = lastName; |
| } |
| } |
| |
| /** |
| * The constants used in this Content Widget. |
| */ |
| static interface DatabaseConstants extends Constants { |
| String[] contactDatabaseCategories(); |
| } |
| |
| private static final String[] FEMALE_FIRST_NAMES = { |
| "Mary", "Patricia", "Linda", "Barbara", "Elizabeth", "Jennifer", "Maria", "Susan", |
| "Margaret", "Dorothy", "Lisa", "Nancy", "Karen", "Betty", "Helen", "Sandra", "Donna", |
| "Carol", "Ruth", "Sharon", "Michelle", "Laura", "Sarah", "Kimberly", "Deborah", "Jessica", |
| "Shirley", "Cynthia", "Angela", "Melissa", "Brenda", "Amy", "Anna", "Rebecca", "Virginia", |
| "Kathleen", "Pamela", "Martha", "Debra", "Amanda", "Stephanie", "Carolyn", "Christine", |
| "Marie", "Janet", "Catherine", "Frances", "Ann", "Joyce", "Diane", "Alice", "Julie", |
| "Heather", "Teresa", "Doris", "Gloria", "Evelyn", "Jean", "Cheryl", "Mildred", "Katherine", |
| "Joan", "Ashley", "Judith", "Rose", "Janice", "Kelly", "Nicole", "Judy", "Christina", |
| "Kathy", "Theresa", "Beverly", "Denise", "Tammy", "Irene", "Jane", "Lori", "Rachel", |
| "Marilyn", "Andrea", "Kathryn", "Louise", "Sara", "Anne", "Jacqueline", "Wanda", "Bonnie", |
| "Julia", "Ruby", "Lois", "Tina", "Phyllis", "Norma", "Paula", "Diana", "Annie", "Lillian", |
| "Emily", "Robin", "Peggy", "Crystal", "Gladys", "Rita", "Dawn", "Connie", "Florence", |
| "Tracy", "Edna", "Tiffany", "Carmen", "Rosa", "Cindy", "Grace", "Wendy", "Victoria", "Edith", |
| "Kim", "Sherry", "Sylvia", "Josephine", "Thelma", "Shannon", "Sheila", "Ethel", "Ellen", |
| "Elaine", "Marjorie", "Carrie", "Charlotte", "Monica", "Esther", "Pauline", "Emma", |
| "Juanita", "Anita", "Rhonda", "Hazel", "Amber", "Eva", "Debbie", "April", "Leslie", "Clara", |
| "Lucille", "Jamie", "Joanne", "Eleanor", "Valerie", "Danielle", "Megan", "Alicia", "Suzanne", |
| "Michele", "Gail", "Bertha", "Darlene", "Veronica", "Jill", "Erin", "Geraldine", "Lauren", |
| "Cathy", "Joann", "Lorraine", "Lynn", "Sally", "Regina", "Erica", "Beatrice", "Dolores", |
| "Bernice", "Audrey", "Yvonne", "Annette", "June", "Samantha", "Marion", "Dana", "Stacy", |
| "Ana", "Renee", "Ida", "Vivian", "Roberta", "Holly", "Brittany", "Melanie", "Loretta", |
| "Yolanda", "Jeanette", "Laurie", "Katie", "Kristen", "Vanessa", "Alma", "Sue", "Elsie", |
| "Beth", "Jeanne"}; |
| private static final String[] MALE_FIRST_NAMES = { |
| "James", "John", "Robert", "Michael", "William", "David", "Richard", "Charles", "Joseph", |
| "Thomas", "Christopher", "Daniel", "Paul", "Mark", "Donald", "George", "Kenneth", "Steven", |
| "Edward", "Brian", "Ronald", "Anthony", "Kevin", "Jason", "Matthew", "Gary", "Timothy", |
| "Jose", "Larry", "Jeffrey", "Frank", "Scott", "Eric", "Stephen", "Andrew", "Raymond", |
| "Gregory", "Joshua", "Jerry", "Dennis", "Walter", "Patrick", "Peter", "Harold", "Douglas", |
| "Henry", "Carl", "Arthur", "Ryan", "Roger", "Joe", "Juan", "Jack", "Albert", "Jonathan", |
| "Justin", "Terry", "Gerald", "Keith", "Samuel", "Willie", "Ralph", "Lawrence", "Nicholas", |
| "Roy", "Benjamin", "Bruce", "Brandon", "Adam", "Harry", "Fred", "Wayne", "Billy", "Steve", |
| "Louis", "Jeremy", "Aaron", "Randy", "Howard", "Eugene", "Carlos", "Russell", "Bobby", |
| "Victor", "Martin", "Ernest", "Phillip", "Todd", "Jesse", "Craig", "Alan", "Shawn", |
| "Clarence", "Sean", "Philip", "Chris", "Johnny", "Earl", "Jimmy", "Antonio", "Danny", |
| "Bryan", "Tony", "Luis", "Mike", "Stanley", "Leonard", "Nathan", "Dale", "Manuel", "Rodney", |
| "Curtis", "Norman", "Allen", "Marvin", "Vincent", "Glenn", "Jeffery", "Travis", "Jeff", |
| "Chad", "Jacob", "Lee", "Melvin", "Alfred", "Kyle", "Francis", "Bradley", "Jesus", "Herbert", |
| "Frederick", "Ray", "Joel", "Edwin", "Don", "Eddie", "Ricky", "Troy", "Randall", "Barry", |
| "Alexander", "Bernard", "Mario", "Leroy", "Francisco", "Marcus", "Micheal", "Theodore", |
| "Clifford", "Miguel", "Oscar", "Jay", "Jim", "Tom", "Calvin", "Alex", "Jon", "Ronnie", |
| "Bill", "Lloyd", "Tommy", "Leon", "Derek", "Warren", "Darrell", "Jerome", "Floyd", "Leo", |
| "Alvin", "Tim", "Wesley", "Gordon", "Dean", "Greg", "Jorge", "Dustin", "Pedro", "Derrick", |
| "Dan", "Lewis", "Zachary", "Corey", "Herman", "Maurice", "Vernon", "Roberto", "Clyde", |
| "Glen", "Hector", "Shane", "Ricardo", "Sam", "Rick", "Lester", "Brent", "Ramon", "Charlie", |
| "Tyler", "Gilbert", "Gene"}; |
| private static final String[] LAST_NAMES = { |
| "Smith", "Johnson", "Williams", "Jones", "Brown", "Davis", "Miller", "Wilson", "Moore", |
| "Taylor", "Anderson", "Thomas", "Jackson", "White", "Harris", "Martin", "Thompson", "Garcia", |
| "Martinez", "Robinson", "Clark", "Rodriguez", "Lewis", "Lee", "Walker", "Hall", "Allen", |
| "Young", "Hernandez", "King", "Wright", "Lopez", "Hill", "Scott", "Green", "Adams", "Baker", |
| "Gonzalez", "Nelson", "Carter", "Mitchell", "Perez", "Roberts", "Turner", "Phillips", |
| "Campbell", "Parker", "Evans", "Edwards", "Collins", "Stewart", "Sanchez", "Morris", |
| "Rogers", "Reed", "Cook", "Morgan", "Bell", "Murphy", "Bailey", "Rivera", "Cooper", |
| "Richardson", "Cox", "Howard", "Ward", "Torres", "Peterson", "Gray", "Ramirez", "James", |
| "Watson", "Brooks", "Kelly", "Sanders", "Price", "Bennett", "Wood", "Barnes", "Ross", |
| "Henderson", "Coleman", "Jenkins", "Perry", "Powell", "Long", "Patterson", "Hughes", |
| "Flores", "Washington", "Butler", "Simmons", "Foster", "Gonzales", "Bryant", "Alexander", |
| "Russell", "Griffin", "Diaz", "Hayes", "Myers", "Ford", "Hamilton", "Graham", "Sullivan", |
| "Wallace", "Woods", "Cole", "West", "Jordan", "Owens", "Reynolds", "Fisher", "Ellis", |
| "Harrison", "Gibson", "Mcdonald", "Cruz", "Marshall", "Ortiz", "Gomez", "Murray", "Freeman", |
| "Wells", "Webb", "Simpson", "Stevens", "Tucker", "Porter", "Hunter", "Hicks", "Crawford", |
| "Henry", "Boyd", "Mason", "Morales", "Kennedy", "Warren", "Dixon", "Ramos", "Reyes", "Burns", |
| "Gordon", "Shaw", "Holmes", "Rice", "Robertson", "Hunt", "Black", "Daniels", "Palmer", |
| "Mills", "Nichols", "Grant", "Knight", "Ferguson", "Rose", "Stone", "Hawkins", "Dunn", |
| "Perkins", "Hudson", "Spencer", "Gardner", "Stephens", "Payne", "Pierce", "Berry", |
| "Matthews", "Arnold", "Wagner", "Willis", "Ray", "Watkins", "Olson", "Carroll", "Duncan", |
| "Snyder", "Hart", "Cunningham", "Bradley", "Lane", "Andrews", "Ruiz", "Harper", "Fox", |
| "Riley", "Armstrong", "Carpenter", "Weaver", "Greene", "Lawrence", "Elliott", "Chavez", |
| "Sims", "Austin", "Peters", "Kelley", "Franklin", "Lawson"}; |
| private static final String[] STREET_NAMES = |
| { |
| "Peachtree", "First", "Second", "Third", "Fourth", "Fifth", "Sixth", "Tenth", |
| "Fourteenth", "Spring", "Techwood", "West Peachtree", "Juniper", "Cypress", "Fowler", |
| "Piedmont", "Juniper", "Main", "Central", "Currier", "Courtland", "Williams", |
| "Centennial", "Olympic", "Baker", "Highland", "Pryor", "Decatur", "Bell", "Edgewood", |
| "Mitchell", "Forsyth", "Capital"}; |
| private static final String[] STREET_SUFFIX = { |
| "St", "Rd", "Ln", "Blvd", "Way", "Pkwy", "Cir", "Ave"}; |
| |
| /** |
| * The singleton instance of the database. |
| */ |
| private static ContactDatabase instance; |
| |
| /** |
| * Get the singleton instance of the contact database. |
| * |
| * @return the singleton instance |
| */ |
| public static ContactDatabase get() { |
| if (instance == null) { |
| instance = new ContactDatabase(); |
| } |
| return instance; |
| } |
| |
| /** |
| * The provider that holds the list of contacts in the database. |
| */ |
| private ListDataProvider<ContactInfo> dataProvider = new ListDataProvider<ContactInfo>(); |
| |
| private final Category[] categories; |
| |
| /** |
| * The map of contacts to her friends. |
| */ |
| private final Map<Integer, Set<ContactInfo>> friendsMap = |
| new HashMap<Integer, Set<ContactInfo>>(); |
| |
| /** |
| * Construct a new contact database. |
| */ |
| private ContactDatabase() { |
| // Initialize the categories. |
| DatabaseConstants constants = GWT.create(DatabaseConstants.class); |
| String[] catNames = constants.contactDatabaseCategories(); |
| categories = new Category[catNames.length]; |
| for (int i = 0; i < catNames.length; i++) { |
| categories[i] = new Category(catNames[i]); |
| } |
| |
| // Generate initial data. |
| generateContacts(250); |
| } |
| |
| /** |
| * Add a new contact. |
| * |
| * @param contact the contact to add. |
| */ |
| public void addContact(ContactInfo contact) { |
| List<ContactInfo> contacts = dataProvider.getList(); |
| // Remove the contact first so we don't add a duplicate. |
| contacts.remove(contact); |
| contacts.add(contact); |
| } |
| |
| /** |
| * Add a display to the database. The current range of interest of the display |
| * will be populated with data. |
| * |
| * @param display a {@Link HasData}. |
| */ |
| public void addDataDisplay(HasData<ContactInfo> display) { |
| dataProvider.addDataDisplay(display); |
| } |
| |
| /** |
| * Generate the specified number of contacts and add them to the data |
| * provider. |
| * |
| * @param count the number of contacts to generate. |
| */ |
| public void generateContacts(int count) { |
| List<ContactInfo> contacts = dataProvider.getList(); |
| for (int i = 0; i < count; i++) { |
| contacts.add(createContactInfo()); |
| } |
| } |
| |
| public ListDataProvider<ContactInfo> getDataProvider() { |
| return dataProvider; |
| } |
| |
| /** |
| * Get the categories in the database. |
| * |
| * @return the categories in the database |
| */ |
| public Category[] queryCategories() { |
| return categories; |
| } |
| |
| /** |
| * Query all contacts for the specified category. |
| * |
| * @param category the category |
| * @return the list of contacts in the category |
| */ |
| public List<ContactInfo> queryContactsByCategory(Category category) { |
| List<ContactInfo> matches = new ArrayList<ContactInfo>(); |
| for (ContactInfo contact : dataProvider.getList()) { |
| if (contact.getCategory() == category) { |
| matches.add(contact); |
| } |
| } |
| return matches; |
| } |
| |
| /** |
| * Query all contacts for the specified category that begin with the specified |
| * first name prefix. |
| * |
| * @param category the category |
| * @param firstNamePrefix the prefix of the first name |
| * @return the list of contacts in the category |
| */ |
| public List<ContactInfo> queryContactsByCategoryAndFirstName(Category category, |
| String firstNamePrefix) { |
| List<ContactInfo> matches = new ArrayList<ContactInfo>(); |
| for (ContactInfo contact : dataProvider.getList()) { |
| if (contact.getCategory() == category && contact.getFirstName().startsWith(firstNamePrefix)) { |
| matches.add(contact); |
| } |
| } |
| return matches; |
| } |
| |
| /** |
| * Query the list of friends for the specified contact. |
| * |
| * @param contact the contact |
| * @return the friends of the contact |
| */ |
| public Set<ContactInfo> queryFriends(ContactInfo contact) { |
| Set<ContactInfo> friends = friendsMap.get(contact.getId()); |
| if (friends == null) { |
| // Assign some random friends. |
| friends = new HashSet<ContactInfo>(); |
| int numContacts = dataProvider.getList().size(); |
| int friendCount = 2 + Random.nextInt(8); |
| for (int i = 0; i < friendCount; i++) { |
| friends.add(dataProvider.getList().get(Random.nextInt(numContacts))); |
| } |
| friendsMap.put(contact.getId(), friends); |
| } |
| return friends; |
| } |
| |
| /** |
| * Refresh all displays. |
| */ |
| public void refreshDisplays() { |
| dataProvider.refresh(); |
| } |
| |
| /** |
| * Create a new random {@link ContactInfo}. |
| * |
| * @return the new {@link ContactInfo}. |
| */ |
| @SuppressWarnings("deprecation") |
| private ContactInfo createContactInfo() { |
| ContactInfo contact = new ContactInfo(nextValue(categories)); |
| contact.setLastName(nextValue(LAST_NAMES)); |
| if (Random.nextBoolean()) { |
| // Male. |
| contact.setFirstName(nextValue(MALE_FIRST_NAMES)); |
| } else { |
| // Female. |
| contact.setFirstName(nextValue(FEMALE_FIRST_NAMES)); |
| } |
| |
| // Create a birthday between 20-80 years ago. |
| int year = (new Date()).getYear() - 21 - Random.nextInt(61); |
| contact.setBirthday(new Date(year, Random.nextInt(12), 1 + Random.nextInt(31))); |
| |
| // Create an address. |
| int addrNum = 1 + Random.nextInt(999); |
| String addrStreet = nextValue(STREET_NAMES); |
| String addrSuffix = nextValue(STREET_SUFFIX); |
| contact.setAddress(addrNum + " " + addrStreet + " " + addrSuffix); |
| return contact; |
| } |
| |
| /** |
| * Get the next random value from an array. |
| * |
| * @param array the array |
| * @return a random value in the array |
| */ |
| private <T> T nextValue(T[] array) { |
| return array[Random.nextInt(array.length)]; |
| } |
| |
| } |