| Clover coverage report - DrJava Test Coverage (drjava-20120304-r5456) |
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| Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
| JListNavigator.java | 76.7% | 71.9% | 54.2% | 68.2% |
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| 1 | /*BEGIN_COPYRIGHT_BLOCK | |
| 2 | * | |
| 3 | * Copyright (c) 2001-2010, JavaPLT group at Rice University (drjava@rice.edu) | |
| 4 | * All rights reserved. | |
| 5 | * | |
| 6 | * Redistribution and use in source and binary forms, with or without | |
| 7 | * modification, are permitted provided that the following conditions are met: | |
| 8 | * * Redistributions of source code must retain the above copyright | |
| 9 | * notice, this list of conditions and the following disclaimer. | |
| 10 | * * Redistributions in binary form must reproduce the above copyright | |
| 11 | * notice, this list of conditions and the following disclaimer in the | |
| 12 | * documentation and/or other materials provided with the distribution. | |
| 13 | * * Neither the names of DrJava, the JavaPLT group, Rice University, nor the | |
| 14 | * names of its contributors may be used to endorse or promote products | |
| 15 | * derived from this software without specific prior written permission. | |
| 16 | * | |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 18 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 19 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 20 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | |
| 21 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
| 22 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
| 23 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 24 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| 25 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| 26 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 27 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 28 | * | |
| 29 | * This software is Open Source Initiative approved Open Source Software. | |
| 30 | * Open Source Initative Approved is a trademark of the Open Source Initiative. | |
| 31 | * | |
| 32 | * This file is part of DrJava. Download the current version of this project | |
| 33 | * from http://www.drjava.org/ or http://sourceforge.net/projects/drjava/ | |
| 34 | * | |
| 35 | * END_COPYRIGHT_BLOCK*/ | |
| 36 | ||
| 37 | package edu.rice.cs.util.docnavigation; | |
| 38 | ||
| 39 | import java.io.File; | |
| 40 | import java.awt.*; | |
| 41 | import javax.swing.*; | |
| 42 | import javax.swing.event.*; | |
| 43 | import java.util.*; | |
| 44 | import edu.rice.cs.util.swing.Utilities; | |
| 45 | //import edu.rice.cs.util.swing.RightClickMouseAdapter; | |
| 46 | ||
| 47 | /** This class is an extension of JList that adds data shadowing the model embedded in a JList. | |
| 48 | * Since all changes to the model (except for the selected item!) must go through this interface, | |
| 49 | * we can support access to methods from non-event threads as long as these methods do not modify | |
| 50 | * the model. However, all of the public methods that access and modify the model (the latter only running | |
| 51 | * in the event thread) must be atomic relative to each other, so synchronization is required in most | |
| 52 | * cases. | |
| 53 | * | |
| 54 | * TODO: generify this class and IDocumentNavigator with respect to its element type once JList is. | |
| 55 | */ | |
| 56 | ||
| 57 | class JListNavigator<ItemT extends INavigatorItem> extends JList implements IDocumentNavigator<ItemT> { | |
| 58 | ||
| 59 | /** The list model (extending AbstractListModel) for this JList. */ | |
| 60 | protected DefaultListModel _model; | |
| 61 | ||
| 62 | /** The current selection value. A cached copy of getSelectedValue(). */ | |
| 63 | private volatile ItemT _current = null; | |
| 64 | ||
| 65 | // /** The index of _current */ | |
| 66 | // private int _currentIndex = -1; | |
| 67 | ||
| 68 | /** The cell renderer for this JList */ | |
| 69 | private volatile CustomListCellRenderer _renderer; | |
| 70 | ||
| 71 | /** the collection of INavigationListeners listening to this JListNavigator */ | |
| 72 | private final ArrayList<INavigationListener<? super ItemT>> navListeners = new ArrayList<INavigationListener<? super ItemT>>(); | |
| 73 | ||
| 74 | /** Standard constructor. */ | |
| 75 | 162 | public JListNavigator() { |
| 76 | 162 | super(); |
| 77 | 162 | init(new DefaultListModel()); |
| 78 | } | |
| 79 | ||
| 80 | 162 | private void init(DefaultListModel m) { |
| 81 | 162 | _model = m; |
| 82 | 162 | setModel(m); |
| 83 | 162 | setSelectionMode(ListSelectionModel.SINGLE_SELECTION); |
| 84 | 162 | addListSelectionListener(new ListSelectionListener() { |
| 85 | /** Called when the list value has changed. Should only run in the event thread. | |
| 86 | * @param e the event corresponding to the change | |
| 87 | */ | |
| 88 | 768 | public void valueChanged(final ListSelectionEvent e) { |
| 89 | // assert EventQueue.isDispatchThread(); | |
| 90 | // Utilities.invokeLater( new Runnable() { | |
| 91 | // public void run() { | |
| 92 | 768 | if (!e.getValueIsAdjusting() && !_model.isEmpty()) { |
| 93 | 764 | @SuppressWarnings("unchecked") final ItemT newItem = (ItemT) getSelectedValue(); |
| 94 | // final int newIndex = getSelectedIndex(); | |
| 95 | 764 | if (_current != newItem) { |
| 96 | 489 | final ItemT oldItem = _current; |
| 97 | 489 | NodeData<ItemT> oldData = new NodeData<ItemT>() { |
| 98 | 0 | public <Ret> Ret execute(NodeDataVisitor<? super ItemT, Ret> v, Object... p) { |
| 99 | 0 | return v.itemCase(oldItem, p); |
| 100 | } | |
| 101 | }; | |
| 102 | 489 | NodeData<ItemT> newData = new NodeData<ItemT>() { |
| 103 | 389 | public <Ret> Ret execute(NodeDataVisitor<? super ItemT, Ret> v, Object... p) { |
| 104 | 389 | return v.itemCase(newItem, p); |
| 105 | } | |
| 106 | }; | |
| 107 | 489 | for(INavigationListener<? super ItemT> listener: navListeners) { |
| 108 | 284 | if (oldItem != null) listener.lostSelection(oldData, isNextChangeModelInitiated()); |
| 109 | 389 | if (newItem != null) listener.gainedSelection(newData, isNextChangeModelInitiated()); |
| 110 | } | |
| 111 | 489 | setNextChangeModelInitiated(false); |
| 112 | 489 | _current = newItem; |
| 113 | // _currentIndex = newIndex; | |
| 114 | } | |
| 115 | } | |
| 116 | // } | |
| 117 | // }); | |
| 118 | } | |
| 119 | }); | |
| 120 | ||
| 121 | 162 | _renderer = new CustomListCellRenderer(); |
| 122 | 162 | _renderer.setOpaque(true); |
| 123 | 162 | this.setCellRenderer(_renderer); |
| 124 | } | |
| 125 | ||
| 126 | /** Adds the document doc to this navigator. Should only be executed in event thread. | |
| 127 | * @param doc the document to add | |
| 128 | */ | |
| 129 | 0 | public void addDocument(ItemT doc) { synchronized(_model) { _model.addElement(doc); } } |
| 130 | ||
| 131 | /** Adds the document to this navigator and ignores the specified path. Should only be | |
| 132 | * executed in event thread. | |
| 133 | * @param doc the document to add -- assumed to be of type T | |
| 134 | * @param path unused parameter in this class | |
| 135 | */ | |
| 136 | 68 | public void addDocument(ItemT doc, String path) { addDocument(doc); } |
| 137 | ||
| 138 | /** A typesafe version of {@code _model.get(i)}. This is a workaround for the | |
| 139 | * non-generic implementation of DefaultListModel, and should be removed once that | |
| 140 | * is fixed. | |
| 141 | */ | |
| 142 | 835 | protected ItemT getFromModel(int i) { |
| 143 | 835 | @SuppressWarnings("unchecked") ItemT result = (ItemT) _model.get(i); |
| 144 | 835 | return result; |
| 145 | } | |
| 146 | ||
| 147 | /** Gets the next document after doc in the series. | |
| 148 | * @param doc the document to reference from | |
| 149 | * @return the document after doc in the list; if doc is the last document, returns doc | |
| 150 | */ | |
| 151 | 31 | public ItemT getNext(ItemT doc) { |
| 152 | 31 | synchronized(_model) { |
| 153 | 31 | int i = _model.indexOf(doc); |
| 154 | 31 | if (i == -1) |
| 155 | 0 | throw new IllegalArgumentException("No such document " + doc.toString() + " found in collection of open documents"); |
| 156 | 7 | if ( i + 1 == _model.size()) return doc; |
| 157 | ||
| 158 | 24 | return getFromModel(i + 1); |
| 159 | } | |
| 160 | } | |
| 161 | ||
| 162 | /** Gets the previous document in the series. | |
| 163 | * @param doc to reference from | |
| 164 | * @return the document which comes before doc in the list | |
| 165 | */ | |
| 166 | 10 | public ItemT getPrevious(ItemT doc) { |
| 167 | 10 | synchronized(_model) { |
| 168 | 10 | int i = _model.indexOf(doc); |
| 169 | 10 | if (i == -1) |
| 170 | 0 | throw new IllegalArgumentException("No such document " + doc.toString() + " found in collection of open documents"); |
| 171 | 2 | if (i == 0) return doc; |
| 172 | 8 | return getFromModel(i - 1); |
| 173 | } | |
| 174 | } | |
| 175 | ||
| 176 | /** Gets the first document in the series. | |
| 177 | * @return the first document in the collection | |
| 178 | */ | |
| 179 | 7 | public ItemT getFirst() { synchronized(_model) { return getFromModel(0); } } |
| 180 | ||
| 181 | /** Gets the first document in the series. | |
| 182 | * @return the first document in the collection | |
| 183 | */ | |
| 184 | 3 | public ItemT getLast() { synchronized(_model) { return getFromModel(_model.size() - 1); } } |
| 185 | ||
| 186 | /** Returns the currently selected item, or null if none. */ | |
| 187 | 1 | public ItemT getCurrent() { return _current; } |
| 188 | ||
| 189 | /** Returns the model lock. */ | |
| 190 | 0 | public Object getModelLock() { return _model; } |
| 191 | ||
| 192 | /** Removes the document from the navigator. Should only be executed in event thread. | |
| 193 | * @param doc the document to remove | |
| 194 | */ | |
| 195 | 263 | public ItemT removeDocument(ItemT doc) { |
| 196 | 263 | synchronized(_model) { |
| 197 | // System.err.println("removing from old list " + doc); | |
| 198 | 263 | int i = _model.indexOf(doc); |
| 199 | 263 | if( i == -1 ) |
| 200 | 0 | throw new IllegalArgumentException("Document " + doc + " not found in Document Navigator"); |
| 201 | 263 | ItemT result = getFromModel(i); |
| 202 | 263 | _model.remove(i); |
| 203 | 263 | return result; |
| 204 | } | |
| 205 | } | |
| 206 | ||
| 207 | /** Resets a given <code>INavigatorItem<code> in the tree. This may affect the placement of the item or its | |
| 208 | * display to reflect any changes made in the model. Should only be executed in event thread. | |
| 209 | * @param doc the docment to be refreshed | |
| 210 | * @throws IllegalArgumentException if this navigator contains no document that is equal to the passed document. | |
| 211 | */ | |
| 212 | 86 | public void refreshDocument(ItemT doc, String path) { |
| 213 | 86 | synchronized(_model) { |
| 214 | 86 | removeDocument(doc); |
| 215 | 86 | addDocument(doc); |
| 216 | } | |
| 217 | } | |
| 218 | ||
| 219 | /** Sets the specified document as selected in the navigator. Only executes in event thread. | |
| 220 | * @param doc the document to select | |
| 221 | */ | |
| 222 | 398 | public void selectDocument(ItemT doc) { |
| 223 | 398 | /* */ assert Utilities.TEST_MODE || EventQueue.isDispatchThread(); |
| 224 | 398 | boolean found; |
| 225 | // synchronized(_model) { | |
| 226 | 8 | if (_current == doc) return; // doc is already _current (the active doc) |
| 227 | 390 | found = _model.contains(doc); |
| 228 | // } | |
| 229 | 390 | if (found) setSelectedValue(doc, true); |
| 230 | // _current = doc; // already done by ListSelectionEvent listener created in init() | |
| 231 | // } | |
| 232 | } | |
| 233 | ||
| 234 | /** Returns whether or not the navigator contains the document | |
| 235 | * @param doc the document to find | |
| 236 | * @return true if this list contains doc (using identity as equality measure), false if not. | |
| 237 | */ | |
| 238 | 5 | public boolean contains(ItemT doc) { |
| 239 | 5 | synchronized(_model) { return _model.contains(doc); } |
| 240 | } | |
| 241 | ||
| 242 | /** @return an Enumeration of the documents in this list (ordering is consistent with getNext() and getPrev()). | |
| 243 | * This cast in this method required to work around the stupid partial generification of DefaultListModel in Java 1.5. | |
| 244 | * The class should be generic: DefaultListModel<T> { ... Enumeration<T> elements() {...} ... } instead of | |
| 245 | * DefaultListModel { ... Enumeration<?> elements() {...} ... }. | |
| 246 | */ | |
| 247 | 6 | public ArrayList<ItemT> getDocuments() { |
| 248 | 6 | synchronized(_model) { |
| 249 | // Cast forced by lousy generic typing of DefaultListModel in Java 1.5 | |
| 250 | 6 | @SuppressWarnings("unchecked") Enumeration<ItemT> items = (Enumeration<ItemT>) _model.elements(); |
| 251 | 6 | ArrayList<ItemT> result = new ArrayList<ItemT>(_model.size()); |
| 252 | 9 | while (items.hasMoreElements()) result.add(items.nextElement()); |
| 253 | 6 | return result; |
| 254 | } | |
| 255 | } | |
| 256 | ||
| 257 | /** Returns all the <code>IDocuments</code> contained in the specified bin. Always empty. | |
| 258 | * @param binName name of bin | |
| 259 | * @return an <code>INavigatorItem<code> enumeration of this navigator's contents. | |
| 260 | */ | |
| 261 | 0 | public ArrayList<ItemT> getDocumentsInBin(String binName) { return new ArrayList<ItemT>(0); } |
| 262 | ||
| 263 | /** @return the number of documents in the navigator. */ | |
| 264 | 1 | public int getDocumentCount() { return _model.size(); } |
| 265 | ||
| 266 | /** @return whether or not the navigator is empty. */ | |
| 267 | 0 | public boolean isEmpty() { return _model.isEmpty(); } |
| 268 | ||
| 269 | /** Adds listener to the collection of listeners. | |
| 270 | * @param listener | |
| 271 | */ | |
| 272 | 161 | public void addNavigationListener(INavigationListener<? super ItemT> listener) { |
| 273 | 161 | synchronized(_model) { navListeners.add(listener); } |
| 274 | } | |
| 275 | ||
| 276 | /** Unregisters the listener listener | |
| 277 | * @param listener | |
| 278 | */ | |
| 279 | 0 | public void removeNavigationListener(INavigationListener<? super ItemT> listener) { |
| 280 | 0 | synchronized(_model) { navListeners.remove(listener); } |
| 281 | } | |
| 282 | ||
| 283 | /** @return the navigator listeners. */ | |
| 284 | 3 | public Collection<INavigationListener<? super ItemT>> getNavigatorListeners() { return navListeners; } |
| 285 | ||
| 286 | /** Clears the navigator and removes all documents. Should only be executed from event thread. */ | |
| 287 | 3 | public void clear() { synchronized(_model) { _model.clear(); } } |
| 288 | ||
| 289 | /** Executes the list case of the visitor. | |
| 290 | * @param algo the visitor to execute | |
| 291 | * @param input the input to run on the visitor | |
| 292 | */ | |
| 293 | 0 | public <InType, ReturnType> ReturnType execute(IDocumentNavigatorAlgo<ItemT, InType, ReturnType> algo, InType input) { |
| 294 | 0 | return algo.forList(this, input); |
| 295 | } | |
| 296 | ||
| 297 | /** Returns a Container representation of this navigator */ | |
| 298 | 402 | public Container asContainer() { return this; } |
| 299 | ||
| 300 | /** Selects the document at the x,y coordinate of the navigator pane and sets it to be | |
| 301 | * the currently active document. Should only be called from event-handling thread. | |
| 302 | * @param x the x coordinate of the navigator pane | |
| 303 | * @param y the y coordinate of the navigator pane | |
| 304 | */ | |
| 305 | 0 | public boolean selectDocumentAt(final int x, final int y) { |
| 306 | 0 | synchronized(_model) { |
| 307 | 0 | final int idx = locationToIndex(new java.awt.Point(x,y)); |
| 308 | 0 | java.awt.Rectangle rect = getCellBounds(idx, idx); |
| 309 | 0 | if (rect.contains(x, y)) { |
| 310 | 0 | selectDocument(getFromModel(idx)); |
| 311 | 0 | return true; |
| 312 | } | |
| 313 | 0 | return false; |
| 314 | } | |
| 315 | } | |
| 316 | ||
| 317 | /** Returns true if the item at the x,y coordinate of the navigator pane is currently selected. | |
| 318 | * Always false for JListSortNavigator | |
| 319 | * Only runs in event thread. | |
| 320 | * @param x the x coordinate of the navigator pane | |
| 321 | * @param y the y coordinate of the navigator pane | |
| 322 | * @return true if the item is currently selected | |
| 323 | */ | |
| 324 | 0 | public boolean isSelectedAt(int x, int y) { return false; |
| 325 | // synchronized(_model) { | |
| 326 | // final int idx = locationToIndex(new java.awt.Point(x,y)); | |
| 327 | // if (idx == -1) return false; | |
| 328 | // return isSelectedIndex(idx); | |
| 329 | // } | |
| 330 | } | |
| 331 | ||
| 332 | /** @return the renderer for this object. */ | |
| 333 | 2 | public Component getRenderer() { return _renderer; } |
| 334 | ||
| 335 | /** @return the number of selected items. Always 1 for JListNavigator */ | |
| 336 | 0 | public int getSelectionCount() { return 1; } // return getSelectedIndices().length; } |
| 337 | ||
| 338 | /** @return true if at least one group of INavigatorItems is selected; always false for JListNavigator */ | |
| 339 | 0 | public boolean isGroupSelected() { return false; } |
| 340 | ||
| 341 | /** @return the number of groups selected. Always 0 for JListSortNavigator */ | |
| 342 | 0 | public int getGroupSelectedCount() { return 0; } |
| 343 | ||
| 344 | /** @return the folders currently selected. Always empty for JListSortNavigator */ | |
| 345 | 0 | public java.util.List<File> getSelectedFolders() { return new ArrayList<File>(); } |
| 346 | ||
| 347 | /** @return true if at least one document is selected; always true for JListNavigator */ | |
| 348 | 0 | public boolean isDocumentSelected() { return true; } |
| 349 | ||
| 350 | /** @return the number of documents selected. Same as getSelectionCount for JListSortNavigator. */ | |
| 351 | 0 | public int getDocumentSelectedCount() { return getSelectionCount(); } |
| 352 | ||
| 353 | /** @return the documents currently selected. Only runs in event thread. */ | |
| 354 | 1 | @SuppressWarnings("unchecked") public java.util.List<ItemT> getSelectedDocuments() { |
| 355 | // Object[] selected = getSelectedValues(); | |
| 356 | // ArrayList<ItemT> l = new ArrayList<ItemT>(selected.length); | |
| 357 | // for (Object o: selected) { l.add((ItemT)o); } | |
| 358 | 1 | ArrayList<ItemT> l = new ArrayList<ItemT>(1); |
| 359 | 1 | l.add((ItemT)getSelectedValue()); |
| 360 | 1 | return l; |
| 361 | } | |
| 362 | ||
| 363 | /** Returns true if the root is selected. Only runs in event thread. */ | |
| 364 | 0 | public boolean isRootSelected() { return false; } |
| 365 | ||
| 366 | /** @return true if the INavigatorItem is in the selected group, if a group is selected. */ | |
| 367 | 0 | public boolean isSelectedInGroup(ItemT i) { return false; } |
| 368 | ||
| 369 | 0 | public void addTopLevelGroup(String name, INavigatorItemFilter<? super ItemT> f) { /* noop */ } |
| 370 | ||
| 371 | 0 | public boolean isTopLevelGroupSelected() { return false; } |
| 372 | ||
| 373 | /** Returns the names of the top level groups that the selected items descend from. | |
| 374 | * Always throws a GroupNotSelectedException for JListSortNavigator | |
| 375 | */ | |
| 376 | 0 | public java.util.Set<String> getNamesOfSelectedTopLevelGroup() throws GroupNotSelectedException{ |
| 377 | 0 | throw new GroupNotSelectedException("A top level group is not selected"); |
| 378 | } | |
| 379 | ||
| 380 | /** Since in the JListNavigator it is impossible to select anything but an INavigatorItem, | |
| 381 | * this method doesn't need to do anything. See JTreeSortNavigator and IDocumentNavigator. | |
| 382 | */ | |
| 383 | 0 | public void requestSelectionUpdate(ItemT doc) { /* nothing */ } |
| 384 | ||
| 385 | // /** Notify this ListModel that doc has changed and may need updating (if it has changed | |
| 386 | // * from modified to unmodified). Should only be performed in the event thread | |
| 387 | // */ | |
| 388 | // public void activeDocumentModified() { | |
| 389 | // synchronized(_model) { | |
| 390 | // int current = _currentIndex; | |
| 391 | // fireSelectionValueChanged(current, current, false); | |
| 392 | // } | |
| 393 | // } | |
| 394 | // | |
| 395 | 0 | public String toString() { synchronized(_model) { return _model.toString(); } } |
| 396 | ||
| 397 | /** The cell renderer for this list. */ | |
| 398 | private static class CustomListCellRenderer extends DefaultListCellRenderer { | |
| 399 | ||
| 400 | /** Rreturns the renderer component for a cell | |
| 401 | * @param list | |
| 402 | * @param value | |
| 403 | * @param index | |
| 404 | * @param isSelected | |
| 405 | * @param hasFocus | |
| 406 | */ | |
| 407 | 1150 | public Component getListCellRendererComponent(JList list, Object value, int index, boolean isSelected, boolean hasFocus) { |
| 408 | ||
| 409 | 1150 | super.getListCellRendererComponent(list, value, index, isSelected, hasFocus); |
| 410 | 1150 | setText(((INavigatorItem)value).getName()); |
| 411 | 1150 | return this; |
| 412 | } | |
| 413 | } | |
| 414 | ||
| 415 | /** Marks the next selection change as model-initiated (true) or user-initiated (false; default). */ | |
| 416 | 881 | public void setNextChangeModelInitiated(boolean b) { |
| 417 | 881 | putClientProperty(MODEL_INITIATED_PROPERTY_NAME, b?Boolean.TRUE:null); |
| 418 | } | |
| 419 | ||
| 420 | /** @return whether the next selection change is model-initiated (true) or user-initiated (false). */ | |
| 421 | 673 | public boolean isNextChangeModelInitiated() { |
| 422 | 673 | return getClientProperty(MODEL_INITIATED_PROPERTY_NAME) != null; |
| 423 | } | |
| 424 | } |
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