Mercurial > jhg

comparison src/org/tmatesoft/hg/util/ProgressSupport.java @ 356:91d75e1bac9f

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Consistent approach to deal with adaptable objects. Give adaptable precedence over instanceof to allow conditional response when classes do implement desired interface
author Artem Tikhomirov <tikhomirov.artem@gmail.com>
date Tue, 06 Dec 2011 14:25:52 +0100
parents 41a778e3fd31
children 48f993aa2f41
comparison
equal deleted inserted replaced
355:f2c11fe7f3e9 356:91d75e1bac9f
35 /** 35 /**
36 * @param target object that might be capable to report progress. Can be <code>null</code> 36 * @param target object that might be capable to report progress. Can be <code>null</code>
37 * @return support object extracted from target or an empty, no-op implementation 37 * @return support object extracted from target or an empty, no-op implementation
38 */ 38 */
39 public static ProgressSupport get(Object target) { 39 public static ProgressSupport get(Object target) {
40 if (target instanceof ProgressSupport) { 40 ProgressSupport ps = Adaptable.Factory.getAdapter(target, ProgressSupport.class, null);
41 return (ProgressSupport) target; 41 if (ps != null) {
42 } 42 return ps;
43 if (target instanceof Adaptable) {
44 ProgressSupport ps = ((Adaptable) target).getAdapter(ProgressSupport.class);
45 if (ps != null) {
46 return ps;
47 }
48 } 43 }
49 return new ProgressSupport() { 44 return new ProgressSupport() {
50 public void start(int totalUnits) { 45 public void start(int totalUnits) {
51 } 46 }
52 public void worked(int units) { 47 public void worked(int units) {