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a917f100 NR |
1 | |
2 | package be.nikiroo.utils.ui; | |
3 | ||
4 | import java.awt.BorderLayout; | |
5 | import java.awt.Dimension; | |
6 | import java.awt.FlowLayout; | |
7 | import java.awt.event.ActionEvent; | |
8 | import java.awt.event.ActionListener; | |
9 | import java.awt.event.ComponentAdapter; | |
10 | import java.awt.event.ComponentEvent; | |
11 | import java.util.ArrayList; | |
12 | import java.util.List; | |
13 | ||
14 | import javax.swing.AbstractAction; | |
15 | import javax.swing.BoxLayout; | |
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16 | import javax.swing.JPanel; |
17 | import javax.swing.JPopupMenu; | |
18 | import javax.swing.JToggleButton; | |
19 | import javax.swing.SwingWorker; | |
20 | import javax.swing.event.PopupMenuEvent; | |
21 | import javax.swing.event.PopupMenuListener; | |
22 | ||
23 | public class BreadCrumbsBar<T> extends ListenerPanel { | |
24 | private class BreadCrumb extends JPanel { | |
416741f5 | 25 | private JToggleButton button; |
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26 | private JToggleButton down; |
27 | ||
28 | public BreadCrumb(final DataNode<T> node) { | |
29 | this.setLayout(new BorderLayout()); | |
30 | ||
a917f100 | 31 | if (!node.isRoot()) { |
416741f5 | 32 | button = new JToggleButton(node.toString()); |
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33 | button.addActionListener(new ActionListener() { |
34 | @Override | |
35 | public void actionPerformed(ActionEvent e) { | |
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36 | button.setSelected(false); |
37 | if (!node.isRoot()) { | |
38 | // TODO: allow clicking on root? option? | |
39 | setSelectedNode(node); | |
40 | } | |
a917f100 NR |
41 | } |
42 | }); | |
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43 | |
44 | this.add(button, BorderLayout.CENTER); | |
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45 | } |
46 | ||
a917f100 NR |
47 | if (!node.getChildren().isEmpty()) { |
48 | // TODO (see things with icons included in viewer) | |
49 | down = new JToggleButton(">"); | |
50 | final JPopupMenu popup = new JPopupMenu(); | |
51 | ||
52 | for (final DataNode<T> child : node.getChildren()) { | |
53 | popup.add(new AbstractAction(child.toString()) { | |
a917f100 NR |
54 | private static final long serialVersionUID = 1L; |
55 | ||
56 | @Override | |
57 | public void actionPerformed(ActionEvent e) { | |
58 | setSelectedNode(child); | |
59 | } | |
60 | }); | |
61 | } | |
62 | ||
63 | down.addActionListener(new ActionListener() { | |
a917f100 NR |
64 | @Override |
65 | public void actionPerformed(ActionEvent ev) { | |
66 | if (down.isSelected()) { | |
67 | popup.show(down, 0, down.getBounds().height); | |
68 | } else { | |
69 | popup.setVisible(false); | |
70 | } | |
71 | } | |
72 | }); | |
73 | ||
74 | popup.addPopupMenuListener(new PopupMenuListener() { | |
75 | @Override | |
76 | public void popupMenuWillBecomeVisible(PopupMenuEvent e) { | |
77 | } | |
78 | ||
79 | @Override | |
80 | public void popupMenuWillBecomeInvisible(PopupMenuEvent e) { | |
81 | down.setSelected(false); | |
82 | } | |
83 | ||
84 | @Override | |
85 | public void popupMenuCanceled(PopupMenuEvent e) { | |
86 | } | |
87 | }); | |
88 | ||
89 | this.add(down, BorderLayout.EAST); | |
90 | } | |
91 | } | |
92 | } | |
93 | ||
94 | static public final String CHANGE_ACTION = "change"; | |
95 | ||
96 | private boolean vertical; | |
97 | private DataNode<T> node; | |
98 | private List<BreadCrumb> crumbs = new ArrayList<BreadCrumb>(); | |
99 | ||
100 | public BreadCrumbsBar(final DataTree<T> tree) { | |
101 | vertical = true; // to force an update | |
102 | setVertical(false); | |
103 | ||
104 | addComponentListener(new ComponentAdapter() { | |
105 | @Override | |
106 | public void componentResized(ComponentEvent e) { | |
107 | super.componentResized(e); | |
108 | synchronized (crumbs) { | |
109 | for (BreadCrumb crumb : crumbs) { | |
110 | setCrumbSize(crumb); | |
111 | } | |
112 | } | |
113 | } | |
114 | }); | |
115 | ||
116 | new SwingWorker<DataNode<T>, Void>() { | |
117 | @Override | |
118 | protected DataNode<T> doInBackground() throws Exception { | |
119 | tree.loadData(); | |
120 | return tree.getRoot(); | |
121 | } | |
122 | ||
123 | @Override | |
124 | protected void done() { | |
125 | try { | |
126 | node = get(); | |
127 | addCrumb(node); | |
128 | ||
129 | // TODO: option? | |
130 | if (node.size() > 0) { | |
131 | setSelectedNode(node.getChildren().get(0)); | |
132 | } else { | |
133 | revalidate(); | |
134 | repaint(); | |
135 | } | |
136 | } catch (Exception e) { | |
137 | e.printStackTrace(); | |
138 | } | |
139 | } | |
140 | }.execute(); | |
141 | } | |
142 | ||
143 | public void setVertical(boolean vertical) { | |
144 | if (vertical != this.vertical) { | |
145 | synchronized (crumbs) { | |
146 | this.vertical = vertical; | |
147 | ||
148 | for (BreadCrumb crumb : crumbs) { | |
149 | this.remove(crumb); | |
150 | } | |
151 | ||
152 | if (vertical) { | |
153 | this.setLayout(new BoxLayout(this, BoxLayout.Y_AXIS)); | |
154 | } else { | |
e7437397 | 155 | this.setLayout(new WrapLayout(WrapLayout.LEADING)); |
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156 | } |
157 | ||
158 | for (BreadCrumb crumb : crumbs) { | |
159 | this.add(crumb); | |
160 | setCrumbSize(crumb); | |
161 | } | |
162 | } | |
163 | ||
164 | this.revalidate(); | |
165 | this.repaint(); | |
166 | } | |
167 | } | |
168 | ||
169 | public DataNode<T> getSelectedNode() { | |
170 | return node; | |
171 | } | |
172 | ||
173 | public void setSelectedNode(DataNode<T> node) { | |
174 | if (this.node == node) { | |
175 | return; | |
176 | } | |
177 | ||
178 | synchronized (crumbs) { | |
179 | // clear until common ancestor (can clear all!) | |
180 | while (this.node != null && !this.node.isParentOf(node)) { | |
181 | this.node = this.node.getParent(); | |
182 | this.remove(crumbs.remove(crumbs.size() - 1)); | |
183 | } | |
184 | ||
185 | // switch root if needed and possible | |
186 | if (this.node == null && node != null) { | |
187 | this.node = node.getRoot(); | |
188 | addCrumb(this.node); | |
189 | } | |
190 | ||
191 | // re-create until node | |
192 | while (node != null && this.node != node) { | |
193 | DataNode<T> ancestorOrNode = node; | |
194 | for (DataNode<T> child : this.node.getChildren()) { | |
195 | if (child.isParentOf(node)) | |
196 | ancestorOrNode = child; | |
197 | } | |
198 | ||
199 | this.node = ancestorOrNode; | |
200 | addCrumb(this.node); | |
201 | } | |
202 | } | |
203 | ||
204 | this.revalidate(); | |
205 | this.repaint(); | |
206 | ||
207 | fireActionPerformed(CHANGE_ACTION); | |
208 | } | |
209 | ||
210 | private void addCrumb(DataNode<T> node) { | |
211 | BreadCrumb crumb = new BreadCrumb(node); | |
212 | this.crumbs.add(crumb); | |
213 | setCrumbSize(crumb); | |
214 | this.add(crumb); | |
215 | } | |
216 | ||
217 | private void setCrumbSize(BreadCrumb crumb) { | |
218 | if (vertical) { | |
219 | crumb.setMaximumSize(new Dimension(this.getWidth(), | |
220 | crumb.getMinimumSize().height)); | |
221 | } else { | |
222 | crumb.setMaximumSize(null); | |
223 | } | |
224 | } | |
225 | } |