1 package net.sf.bibkeeper;
2
3 import java.awt;
4 import java.awt.event;
5 import javax.swing;
6 import javax.swing.event.HyperlinkListener;
7 import javax.swing.event.HyperlinkEvent;
8 import java.net.URL;
9
10 /**
11 * This is a non-modal help Dialog. The contents of the help is specified
12 * by calling
13 */
14 public class HelpDialog extends JDialog implements HyperlinkListener {
15
16 private BibtexBaseFrame parent;
17 private HelpContent content;
18 private BackAction back = new BackAction();
19 private ForwardAction forward = new ForwardAction();
20 private ContentsAction contents = new ContentsAction();
21
22 // Initializes, but does not show the help dialog.
23 public HelpDialog(BibtexBaseFrame bf) {
24 super(bf, GUIGlobals.helpTitle, false);
25 content = new HelpContent();
26 content.addHyperlinkListener(this);
27 setSize(GUIGlobals.helpSize);
28 Dimension ds = GUIGlobals.helpSize,
29 df = bf.getSetSize();
30 Point pf = bf.getSetLocation();
31 setLocation(new Point(Math.max(0,(pf.x+(df.width-ds.width)/2)),
32 Math.max(0,(pf.y+(df.height-ds.height)/2))));
33 /* There is probably no need for a window listener now, so it's commented out.
34 diag.addWindowListener(new WindowAdapter() {
35 public void windowClosing(WindowEvent e) {
36 open = null;
37 }
38 });*/
39 JToolBar tlb = new JToolBar();
40 //tlb.add(new CloseAction());
41 //tlb.addSeparator();
42 tlb.add(back);
43 tlb.add(forward);
44 tlb.addSeparator();
45 tlb.add(contents);
46 tlb.setFloatable(false);
47
48 // Make ESC close dialog, and set shortkeys for back and forward.
49 InputMap im = tlb.getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW);
50 ActionMap am = tlb.getActionMap();
51 im.put(GUIGlobals.exitDialog, "close");
52 am.put("close", new CloseAction());
53 im.put(GUIGlobals.switchPanelLeft, "left");
54 am.put("left", back);
55 im.put(GUIGlobals.switchPanelRight, "right");
56 am.put("right", forward);
57
58 // Set shortkeys for back and forward specifically for the EditorPane.
59 im = content.getInputMap(JComponent.WHEN_FOCUSED);
60 am = content.getActionMap();
61 im.put(GUIGlobals.switchPanelLeft, "left");
62 am.put("left", back);
63 im.put(GUIGlobals.switchPanelRight, "right");
64 am.put("right", forward);
65
66 getContentPane().add(tlb, BorderLayout.NORTH);
67 getContentPane().add(content.getPane());
68 forward.setEnabled(false);
69 back.setEnabled(false);
70 }
71
72 public void showPage(URL url) {
73 if (!isVisible()) {
74 setVisible(true);
75 content.reset();
76 forward.setEnabled(false);
77 back.setEnabled(false);
78 } else {
79 setVisible(true);
80 forward.setEnabled(false);
81 back.setEnabled(true);
82 }
83 content.setPage(url);
84 content.requestFocus();
85 //setVisible(true);
86 }
87
88 public void hyperlinkUpdate(HyperlinkEvent e) {
89 if (e.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
90 content.setPage(e.getURL());
91 back.setEnabled(true);
92 forward.setEnabled(false);
93 }
94 }
95
96 class CloseAction extends AbstractAction {
97 public CloseAction() {
98 super("Close", new ImageIcon(GUIGlobals.closeIconFile));
99 putValue(SHORT_DESCRIPTION, "Close this help window");
100 }
101
102 public void actionPerformed(ActionEvent e) {
103 dispose();
104 }
105 }
106
107 class BackAction extends AbstractAction {
108 public BackAction() {
109 super("Back", new ImageIcon(GUIGlobals.backIconFile));
110 //putValue(SHORT_DESCRIPTION, "Show the previous page");
111 }
112
113 public void actionPerformed(ActionEvent e) {
114 setEnabled(content.back());
115 forward.setEnabled(true);
116 }
117 }
118
119 class ForwardAction extends AbstractAction {
120 public ForwardAction() {
121 super("Forward", new ImageIcon(GUIGlobals.forwardIconFile));
122 }
123
124 public void actionPerformed(ActionEvent e) {
125 setEnabled(content.forward());
126 back.setEnabled(true);
127 }
128 }
129
130 class ContentsAction extends AbstractAction {
131 public ContentsAction() {
132 super("Contents", new ImageIcon(GUIGlobals.contentsIconFile));
133 }
134
135 public void actionPerformed(ActionEvent e) {
136 content.setPage(GUIGlobals.helpContents);
137 back.setEnabled(true);
138 }
139 }
140 }
Save This Page