| 1 | package be.nikiroo.fanfix_swing.gui.browser; |
| 2 | |
| 3 | import java.awt.BorderLayout; |
| 4 | import java.awt.Component; |
| 5 | import java.awt.event.ActionEvent; |
| 6 | import java.awt.event.ActionListener; |
| 7 | import java.util.ArrayList; |
| 8 | import java.util.List; |
| 9 | import java.util.Map; |
| 10 | |
| 11 | import javax.swing.JTree; |
| 12 | import javax.swing.SwingWorker; |
| 13 | import javax.swing.event.TreeSelectionEvent; |
| 14 | import javax.swing.event.TreeSelectionListener; |
| 15 | import javax.swing.plaf.basic.BasicTreeUI; |
| 16 | import javax.swing.tree.DefaultMutableTreeNode; |
| 17 | import javax.swing.tree.DefaultTreeCellRenderer; |
| 18 | import javax.swing.tree.DefaultTreeModel; |
| 19 | import javax.swing.tree.TreeCellRenderer; |
| 20 | import javax.swing.tree.TreePath; |
| 21 | |
| 22 | import be.nikiroo.fanfix_swing.gui.SearchBar; |
| 23 | import be.nikiroo.fanfix_swing.gui.utils.ListenerPanel; |
| 24 | import be.nikiroo.fanfix_swing.gui.utils.TreeCellSpanner; |
| 25 | import be.nikiroo.fanfix_swing.gui.utils.TreeSnapshot; |
| 26 | import be.nikiroo.fanfix_swing.gui.utils.UiHelper; |
| 27 | import be.nikiroo.fanfix_swing.images.IconGenerator; |
| 28 | import be.nikiroo.fanfix_swing.images.IconGenerator.Icon; |
| 29 | import be.nikiroo.fanfix_swing.images.IconGenerator.Size; |
| 30 | |
| 31 | public abstract class BasicTab<T> extends ListenerPanel { |
| 32 | private int totalCount = 0; |
| 33 | private List<String> selectedElements = new ArrayList<String>(); |
| 34 | private T data; |
| 35 | private String baseTitle; |
| 36 | private String listenerCommand; |
| 37 | private int index; |
| 38 | |
| 39 | private JTree tree; |
| 40 | private DefaultMutableTreeNode root; |
| 41 | private SearchBar searchBar; |
| 42 | |
| 43 | public BasicTab(int index, String listenerCommand) { |
| 44 | setLayout(new BorderLayout()); |
| 45 | |
| 46 | this.index = index; |
| 47 | this.listenerCommand = listenerCommand; |
| 48 | |
| 49 | data = createEmptyData(); |
| 50 | totalCount = 0; |
| 51 | |
| 52 | root = new DefaultMutableTreeNode(); |
| 53 | |
| 54 | tree = new JTree(root); |
| 55 | tree.setUI(new BasicTreeUI()); |
| 56 | TreeCellSpanner spanner = new TreeCellSpanner(tree, generateCellRenderer()); |
| 57 | tree.setCellRenderer(spanner); |
| 58 | tree.setRootVisible(false); |
| 59 | tree.setShowsRootHandles(false); |
| 60 | |
| 61 | tree.addTreeSelectionListener(new TreeSelectionListener() { |
| 62 | @Override |
| 63 | public void valueChanged(TreeSelectionEvent e) { |
| 64 | List<String> elements = new ArrayList<String>(); |
| 65 | TreePath[] paths = tree.getSelectionPaths(); |
| 66 | if (paths != null) { |
| 67 | for (TreePath path : paths) { |
| 68 | String key = path.getLastPathComponent().toString(); |
| 69 | elements.add(keyToElement(key)); |
| 70 | } |
| 71 | } |
| 72 | |
| 73 | List<String> selectedElements = new ArrayList<String>(); |
| 74 | for (String element : elements) { |
| 75 | if (!selectedElements.contains(element)) { |
| 76 | selectedElements.add(element); |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | BasicTab.this.selectedElements = selectedElements; |
| 81 | |
| 82 | fireActionPerformed(BasicTab.this.listenerCommand); |
| 83 | } |
| 84 | }); |
| 85 | |
| 86 | add(UiHelper.scroll(tree), BorderLayout.CENTER); |
| 87 | |
| 88 | searchBar = new SearchBar(); |
| 89 | add(searchBar, BorderLayout.NORTH); |
| 90 | searchBar.addActionListener(new ActionListener() { |
| 91 | @Override |
| 92 | public void actionPerformed(ActionEvent e) { |
| 93 | reloadData(); |
| 94 | } |
| 95 | }); |
| 96 | |
| 97 | reloadData(); |
| 98 | } |
| 99 | |
| 100 | public void reloadData() { |
| 101 | final TreeSnapshot snapshot = new TreeSnapshot(tree); |
| 102 | SwingWorker<Map<String, List<String>>, Integer> worker = new SwingWorker<Map<String, List<String>>, Integer>() { |
| 103 | @Override |
| 104 | protected Map<String, List<String>> doInBackground() throws Exception { |
| 105 | fillData(data); |
| 106 | return null; |
| 107 | } |
| 108 | |
| 109 | @Override |
| 110 | protected void done() { |
| 111 | try { |
| 112 | get(); |
| 113 | } catch (Exception e) { |
| 114 | // TODO: error |
| 115 | } |
| 116 | |
| 117 | // TODO: update is flickering... |
| 118 | |
| 119 | root.removeAllChildren(); |
| 120 | totalCount = loadData(root, data, searchBar.getText()); |
| 121 | ((DefaultTreeModel) tree.getModel()).reload(); |
| 122 | |
| 123 | snapshot.apply(); |
| 124 | |
| 125 | fireActionPerformed(listenerCommand); |
| 126 | } |
| 127 | }; |
| 128 | worker.execute(); |
| 129 | } |
| 130 | |
| 131 | /** |
| 132 | * The currently selected elements, or an empty list. |
| 133 | * |
| 134 | * @return the sources (cannot be NULL) |
| 135 | */ |
| 136 | public List<String> getSelectedElements() { |
| 137 | return selectedElements; |
| 138 | } |
| 139 | |
| 140 | public int getTotalCount() { |
| 141 | return totalCount; |
| 142 | } |
| 143 | |
| 144 | public String getBaseTitle() { |
| 145 | return baseTitle; |
| 146 | } |
| 147 | |
| 148 | public void setBaseTitle(String baseTitle) { |
| 149 | this.baseTitle = baseTitle; |
| 150 | } |
| 151 | |
| 152 | public String getTitle() { |
| 153 | String title = getBaseTitle(); |
| 154 | String count = ""; |
| 155 | if (totalCount > 0) { |
| 156 | int selected = selectedElements.size(); |
| 157 | count = " (" + (selected > 0 ? selected + "/" : "") + totalCount + ")"; |
| 158 | } |
| 159 | |
| 160 | return title + count; |
| 161 | } |
| 162 | |
| 163 | public int getIndex() { |
| 164 | return index; |
| 165 | } |
| 166 | |
| 167 | public void unselect() { |
| 168 | tree.clearSelection(); |
| 169 | } |
| 170 | |
| 171 | protected boolean checkFilter(String filter, String value) { |
| 172 | return (filter == null || filter.isEmpty() || value.toLowerCase().contains(filter.toLowerCase())); |
| 173 | } |
| 174 | |
| 175 | protected boolean checkFilter(String filter, List<String> list) { |
| 176 | for (String value : list) { |
| 177 | if (checkFilter(filter, value)) |
| 178 | return true; |
| 179 | } |
| 180 | return false; |
| 181 | } |
| 182 | |
| 183 | protected abstract T createEmptyData(); |
| 184 | |
| 185 | protected abstract void fillData(T data); |
| 186 | |
| 187 | protected abstract String keyToElement(String key); |
| 188 | |
| 189 | protected abstract String keyToDisplay(String key); |
| 190 | |
| 191 | protected abstract int loadData(DefaultMutableTreeNode root, T data, String filter); |
| 192 | |
| 193 | private TreeCellRenderer generateCellRenderer() { |
| 194 | DefaultTreeCellRenderer renderer = new DefaultTreeCellRenderer() { |
| 195 | @Override |
| 196 | public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected, boolean expanded, |
| 197 | boolean leaf, int row, boolean hasFocus) { |
| 198 | if (value instanceof DefaultMutableTreeNode) { |
| 199 | if (((DefaultMutableTreeNode) value).getLevel() > 1) { |
| 200 | setLeafIcon(null); |
| 201 | setLeafIcon(IconGenerator.get(Icon.empty, Size.x4)); |
| 202 | } else { |
| 203 | setLeafIcon(IconGenerator.get(Icon.empty, Size.x16)); |
| 204 | } |
| 205 | } |
| 206 | |
| 207 | String display = value == null ? "" : value.toString(); |
| 208 | if (!display.isEmpty()) |
| 209 | display = keyToDisplay(display); |
| 210 | |
| 211 | return super.getTreeCellRendererComponent(tree, display, selected, expanded, leaf, row, hasFocus); |
| 212 | } |
| 213 | }; |
| 214 | |
| 215 | renderer.setClosedIcon(IconGenerator.get(Icon.arrow_right, Size.x16)); |
| 216 | renderer.setOpenIcon(IconGenerator.get(Icon.arrow_down, Size.x16)); |
| 217 | renderer.setLeafIcon(IconGenerator.get(Icon.empty, Size.x16)); |
| 218 | |
| 219 | return renderer; |
| 220 | } |
| 221 | } |