Design Patterns · Elements of Reusable Object-Oriented Software by Erich Gamma, Richard Helm, Ralph Johnson, John Vlissides -- Read -- Imperial Library of Trantor

Index

Contents Preface to CD Preface to Book Foreword Guide to Readers 1. Introduction

What is a Design Pattern? Design Patterns in Smalltalk MVC Describing Design Patterns The Catalog of Design Patterns Organizing the Catalog How Design Patterns Solve Design Problems

Finding Appropriate Objects Determining Object Granularity Specifying Object Interfaces Specifying Object Implementations Putting Reuse Mechanisms to Work Designing for Change

How to Select a Design Pattern How to Use a Design Pattern

2. A Case Study: Design a Document Editor

Design Problems Document Structure

Recursive Composition Glyphs Composite Pattern

Formatting

Encapsulating the Formatting Algorithm Compositor and Composition Strategy Pattern

Embellishing the User Interface

Transparent Enclosure Monoglyph Decorator Pattern

Supporting Multiple Look-and-Feel Standards

Abstracting Object Creation Factories and Product Classes Abstract Factory Pattern

Supporting Multiple Window Systems

Can We Use an Abstract Factory? Encapsulating Implementation Dependencies Window and WindowImp WindowImp Subclasses Configuring Windows with WindowImps Bridge Pattern

User Operations

Encapsulating a Request Command Class and Subclasses Undoability Command History Command Pattern

Spelling Checking and Hyphenation

Accessing Scattered Information Encapsulating Access and Traversal Iterator Class and Subclasses Iterator Pattern Traversal versus Traversal Actions Encapsulating the Analysis Visitor Class and Subclasses Visitor Pattern

Summary

3. Creational Patterns

Abstract Factory

Intent Also Known As Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Builder

Intent Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Factory Method

Intent Also Known As Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Prototype

Intent Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Singleton

Intent Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Discussion of Creational Patterns

4. Structural Patterns

Adapter

Intent Also Known As Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Bridge

Intent Also Known As Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Composite

Intent Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Decorator

Intent Also Known As Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Facade

Intent Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Flyweight

Intent Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Proxy

Intent Also Known As Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Discussion of Structural Patterns

Adapter versus Bridge Composite versus Decorator versus Proxy

5. Behavioral Patterns

Chain of Responsibility

Intent Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Command

Intent Also Known As Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Interpreter

Intent Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Iterator

Intent Also Known As Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Mediator

Intent Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Memento

Intent Also Known As Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Observer

Intent Also Known As Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

State

Intent Also Known As Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Strategy

Intent Also Known As Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Template Method

Intent Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Visitor

Intent Motivation Applicability Structure Participants Collaborations Consequences Implementation Sample Code Known Uses Related Patterns

Discussion of Behavioral Patterns

Encapsulating Variation Objects as Arguments Should Communication be Encapsulated or Distributed? Decoupling Senders and Receivers Summary

6. Conclusion

What to Expect from Design Patterns

A Common Design Vocabulary A Documentation and Learning Aid An Adjunct to Existing Methods A Target for Refactoring

A Brief History The Pattern Community

Alexander's Pattern Languages Patterns in Software

An Invitation A Parting Thought

Appendix A: Glossary Appendix B: Guide to Notation

Class Diagram Object Diagram Interaction Diagram

Appendix C: Foundation Classes

List

Construction, Destruction, Initialization, and Assignment Accessing Adding Removing Stack Interface

Iterator ListIterator Point Rect

Bibliography

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