1 package com.github.celldynamics.quimp;
2
3 import java.util.List;
4
5 import org.scijava.vecmath.Point2d;
6 import org.slf4j.Logger;
7 import org.slf4j.LoggerFactory;
8
9 /**
10 * Accessor that masks all public methods from object it holds except those manually exposed.
11 *
12 * <p>This class is used for limiting access to public methods of QuimP from external plugins. It
13 * prevents calling those methods in unchecked way.
14 *
15 * <p>Support bi-directional communication. Plugin can call: -# updateView() for updating view (and
16 * recalculating all plugins) -# getSnakeasXX() for current snake (only for previewing purposes).
17 *
18 * @author p.baniukiewicz
19 *
20 */
21 public class ViewUpdater {
22
23 /**
24 * The Constant LOGGER.
25 */
26 static final Logger LOGGER = LoggerFactory.getLogger(ViewUpdater.class.getName());
27 private Object ob;
28 private Snake snake; //!< Hold one snake from main view that can be requested by plugin
29
30 /**
31 * Connect object to accessor.
32 *
33 * @param ob Object
34 */
35 public ViewUpdater(Object ob) {
36 this.ob = ob;
37 }
38
39 /**
40 * Connect current snake (on current frame) to this object.
41 *
42 * <p>Connected snake can be requested by plugins (always as copy)
43 *
44 * @param snake Snake to be connected. I can be null when user e.g. deleted last object
45 */
46 protected void connectSnakeObject(final Snake snake) {
47 if (snake != null) {
48 LOGGER.trace("Remembered snake: " + snake.getSnakeID());
49 } else {
50 LOGGER.trace("Remembered snake: " + "null");
51 }
52 this.snake = snake;
53 }
54
55 /**
56 * Calls updateView method from object ob.
57 *
58 * <p>Also stores current plugin configuration locally in QuimP.
59 *
60 * @see SnakePluginList
61 */
62 public void updateView() {
63 if (ob instanceof BOA_) {
64 ((BOA_) ob).recalculatePlugins();
65 } else {
66 throw new RuntimeException("Class not supported");
67 }
68 }
69
70 /**
71 * Request copy of connected snake for previewing purposes.
72 *
73 * @return copy of connected snake as list of points or empty list if snake is not connected
74 */
75 public List<Point2d> getSnakeasPoints() {
76 if (snake != null) {
77 return snake.asList();
78 } else {
79 return null;
80 }
81 }
82
83 /**
84 * Request copy of connected snake for previewing purposes.
85 *
86 * @return copy of connected snake as Snake
87 */
88 public Snake getSnakeasSnake() {
89 Snake ret = null;
90 if (snake != null) {
91 ret = new Snake(snake, snake.getSnakeID());
92 }
93 return ret;
94 }
95
96 }