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1
2
23
24 package javax.microedition.lcdui;
25
26
27 public class Alert extends Screen
28 {
29
30 public static final int FOREVER = -2;
31
32 ImageStringItem alertContent;
33 AlertType type;
34 static final Command OK = new Command("OK", Command.OK, 0);
35 int time;
36
37
38 CommandListener alertListener = new CommandListener()
39 {
40
41 public void commandAction(Command cmd, Displayable d)
42 {
43 currentDisplay.clearAlert();
44 }
45
46 };
47
48
49 public Alert(String title)
50 {
51 this(title, null, null, null);
52 }
53
54
55 public Alert(String title, String alertText, Image alertImage, AlertType alertType)
56 {
57 super(title);
58 setTimeout(getDefaultTimeout());
59 this.alertContent = new ImageStringItem(null, alertImage, alertText);
60 setType(alertType);
61 super.setCommandListener(alertListener);
62 }
63
64
65 public void addCommand(Command cmd)
66 {
67 throw new IllegalStateException("Alert does not accept commands");
68 }
69
70
71 public int getDefaultTimeout()
72 {
73 return Alert.FOREVER;
74 }
75
76
77 public String getString()
78 {
79 return alertContent.getText();
80 }
81
82
83 public int getTimeout()
84 {
85 return time;
86 }
87
88
89 public AlertType getType()
90 {
91 return type;
92 }
93
94
95 public void setType(AlertType type)
96 {
97 this.type = type;
98 }
99
100
101 public void setCommandListener(CommandListener l)
102 {
103 throw new IllegalStateException("Alert does not accept listeners");
104 }
105
106
107 public Image getImage()
108 {
109 return alertContent.getImage();
110 }
111
112
113 public void setImage(Image img)
114 {
115 if (img.isMutable()) {
116 throw new IllegalArgumentException("Image cannot be mutable");
117 }
118 alertContent.setImage(img);
119 repaint();
120 }
121
122
123 public void setString(String str)
124 {
125 alertContent.setText(str);
126 repaint();
127 }
128
129
130 public void setTimeout(int time)
131 {
132 if (time != FOREVER && time <= 0) {
133 throw new IllegalArgumentException();
134 }
135 this.time = time;
136 super.removeCommand(OK);
137 if (getTimeout() == Alert.FOREVER) {
138 super.addCommand(OK);
139 }
140
141 }
142
143
144 int getHeight()
145 {
146 return alertContent.getHeight();
147 }
148
149
150 int paintContent(Graphics g)
151 {
152 return alertContent.paint(g);
153 }
154
155
156 void showNotify()
157 {
158 super.showNotify();
159
160 viewPortY = 0;
161 }
162
163
164 int traverse(int gameKeyCode, int top, int bottom)
165 {
166 Font f = Font.getDefaultFont();
167
168 if (gameKeyCode == 1 && top != 0) {
169 return -f.getHeight();
170 }
171 if (gameKeyCode == 6 && bottom < getHeight()) {
172 return f.getHeight();
173 }
174
175 return 0;
176 }
177
178 }
179 |
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