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23 
24 /*
25   @test %I% %E%
26   @bug 6315717
27   @summary verifies that InputEvents button masks arrays are the same
28   @author Andrei Dmitriev : area=awt.event
29   @run main ButtonArraysEquality
30  */
31 
32 import java.awt.*;
33 import java.awt.event.*;
34 import java.lang.reflect.*;
35 import java.security.AccessController;
36 import java.security.PrivilegedAction;
37 
38 // get array InputEvent.BUTTON_MASK via reflection
39 // get array InputEvent.BUTTON_DOWN_MASK via reflection
40 // compare their lengths and values
41 
42 public class ButtonArraysEquality {
43     static int [] eventDownMask = new int []{InputEvent.BUTTON1_DOWN_MASK, InputEvent.BUTTON2_DOWN_MASK, InputEvent.BUTTON3_DOWN_MASK};
44 
main(String []s)45     public static void main(String []s){
46         int [] buttonDownMasksAPI = new int [MouseInfo.getNumberOfButtons()];
47         for (int i = 0; i < MouseInfo.getNumberOfButtons(); i++){
48             buttonDownMasksAPI[i] = InputEvent.getMaskForButton(i+1);
49             System.out.println("TEST: "+buttonDownMasksAPI[i]);
50         }
51 
52         // getButtonDownMasks()
53         Object obj = AccessController.doPrivileged(
54                                             new PrivilegedAction() {
55                                                 public Object run() {
56                                                     try {
57                                                         Class clazz = Class.forName("java.awt.event.InputEvent");
58                                                         Method method  = clazz.getDeclaredMethod("getButtonDownMasks",new Class [] {});
59                                                         if (method != null) {
60                                                             method.setAccessible(true);
61                                                             return method.invoke(null, (Object[])null);
62                                                         }
63                                                     }catch (Exception e){
64                                                         throw new RuntimeException("Test failed. Exception occured:", e);
65                                                     }
66                                                     return null;
67                                                 }
68                                             });
69 
70         int [] buttonDownMasks = new int [Array.getLength(obj)];
71         checkNullAndPutValuesToArray(buttonDownMasks, obj);
72 
73         //check lengths: array shouldn't contain less elements then the number of buttons on a mouse
74         if (buttonDownMasks.length < buttonDownMasksAPI.length){
75             throw new RuntimeException("Test failed. The lengths array is less then the number of buttons");
76         }
77 
78         // verify values for first three buttons
79         for (int i = 0; i < 3; i++) {
80             if (eventDownMask[i] != buttonDownMasks[i])
81             {
82                 System.out.println("Test : "+ i + " | " + " | " +eventDownMask[i] + " | "+ buttonDownMasks[i]);
83                 throw new RuntimeException("Failure: masks are not correct for standard buttons");
84             }
85         }
86 
87         // verify values for extra buttons if any
88         for (int i = 3; i < MouseInfo.getNumberOfButtons(); i++) {
89             if (buttonDownMasksAPI[i] != buttonDownMasks[i]) {
90                 throw new RuntimeException("Failure: masks are not the same for extra buttons");
91             }
92         }
93         System.out.println("Test passed.");
94     }
95 
checkNullAndPutValuesToArray(int [] array, Object obj)96     public static void checkNullAndPutValuesToArray(int [] array, Object obj){
97         if (obj == null){
98             throw new RuntimeException("Test failed. The array obtained via reflection is "+obj);
99         }
100 
101         for (int i = 0; i < Array.getLength(obj); i++){
102             System.out.println("Test (Reflection): "+ Array.getInt(obj, i));
103             array[i] = Array.getInt(obj, i);
104         }
105     }
106 }
107