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