Skip to main content
aboutsummaryrefslogtreecommitdiffstats
blob: ee4844d3543f8c806d4208f931b1b311503a021b (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
/*******************************************************************************
 * Copyright (c) 2000, 2006 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/

package org.eclipse.team.internal.ui.history;

import com.ibm.icu.text.DateFormat;
import java.util.Date;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.IAdaptable;
import org.eclipse.jface.resource.JFaceResources;
import org.eclipse.jface.viewers.*;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.DisposeEvent;
import org.eclipse.swt.events.DisposeListener;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.graphics.Color;
import org.eclipse.swt.graphics.Font;
import org.eclipse.swt.graphics.FontData;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.team.core.RepositoryProvider;
import org.eclipse.team.core.history.IFileHistory;
import org.eclipse.team.core.history.IFileRevision;
import org.eclipse.team.internal.ui.TeamUIMessages;

public class GenericHistoryTableProvider {
	private IFileHistory currentFileHistory;
	private IFile currentFile;
	private String currentRevision;
	private TableViewer viewer;
	private Font currentRevisionFont;

	//column constants
	private static final int COL_REVISIONID = 0;
	private static final int COL_DATE= 1;
	private static final int COL_AUTHOR = 2;
	private static final int COL_COMMENT = 3;

	/**
	 * The history label provider.
	 */
	class HistoryLabelProvider extends LabelProvider implements ITableLabelProvider, IColorProvider, IFontProvider {
		private DateFormat dateFormat;
		@Override
		public Image getColumnImage(Object element, int columnIndex) {
			return null;
		}
		@Override
		public String getColumnText(Object element, int columnIndex) {
			IFileRevision entry = adaptToFileRevision(element);
			if (entry == null) return ""; //$NON-NLS-1$
			switch (columnIndex) {
				case COL_REVISIONID:
					String revision = entry.getContentIdentifier();
					return revision;
				case COL_DATE:
					long date = entry.getTimestamp();
					Date dateFromLong = new Date(date);
					return getDateFormat().format(dateFromLong);
				case COL_AUTHOR:
					return entry.getAuthor();
				case COL_COMMENT:
					String comment = entry.getComment();
					return comment;
				default:
					return ""; //$NON-NLS-1$
			}
		}

		private synchronized DateFormat getDateFormat() {
			if (dateFormat == null)
				dateFormat = DateFormat.getInstance();
			return dateFormat;
		}

		/* (non-Javadoc)
		 * @see org.eclipse.jface.viewers.IColorProvider#getForeground(java.lang.Object)
		 */
		@Override
		public Color getForeground(Object element) {
			IFileRevision entry = adaptToFileRevision(element);
			if (!entry.exists())  {
				return Display.getCurrent().getSystemColor(SWT.COLOR_WIDGET_NORMAL_SHADOW);
			}

			return null;
		}
		/* (non-Javadoc)
		 * @see org.eclipse.jface.viewers.IColorProvider#getBackground(java.lang.Object)
		 */
		@Override
		public Color getBackground(Object element) {
			return null;
		}
		/*
		 * (non-Javadoc)
		 * @see org.eclipse.jface.viewers.IFontProvider#getFont(java.lang.Object)
		 */
		@Override
		public Font getFont(Object element) {
			IFileRevision entry = adaptToFileRevision(element);
			if (entry == null)
				return null;
			String revision = entry.getContentIdentifier();
			String tempCurrentRevision = getCurrentRevision();
			if (tempCurrentRevision != null && tempCurrentRevision.equals(revision)) {
				if (currentRevisionFont == null) {
					Font defaultFont = JFaceResources.getDefaultFont();
					FontData[] data = defaultFont.getFontData();
					for (int i = 0; i < data.length; i++) {
						data[i].setStyle(SWT.BOLD);
					}
					currentRevisionFont = new Font(viewer.getTable().getDisplay(), data);
				}
				return currentRevisionFont;
			}
			return null;
		}
	}

	/**
	 * The history sorter
	 */
	class HistoryComparator extends ViewerComparator {
		private boolean reversed = false;
		private int columnNumber;

		// column headings:	"Revision" "Tags" "Date" "Author" "Comment"
		private int[][] SORT_ORDERS_BY_COLUMN = {
			{COL_REVISIONID, COL_DATE, COL_AUTHOR, COL_COMMENT},	/* revision */
			{COL_REVISIONID, COL_DATE, COL_AUTHOR, COL_COMMENT},	/* tags */
			{COL_DATE, COL_REVISIONID, COL_AUTHOR, COL_COMMENT},	/* date */
			{COL_AUTHOR, COL_REVISIONID, COL_DATE, COL_COMMENT},	/* author */
			{COL_COMMENT, COL_REVISIONID, COL_DATE, COL_AUTHOR}		/* comment */
		};

		/**
		 * The constructor.
		 */
		public HistoryComparator(int columnNumber) {
			this.columnNumber = columnNumber;
		}
		/**
		 * Compares two log entries, sorting first by the main column of this sorter,
		 * then by subsequent columns, depending on the column sort order.
		 */
		@Override
		public int compare(Viewer viewer, Object o1, Object o2) {
			IFileRevision e1 = adaptToFileRevision(o1);
			IFileRevision e2 = adaptToFileRevision(o2);
			int result = 0;
			if (e1 == null || e2 == null) {
				result = super.compare(viewer, o1, o2);
			} else {
				int[] columnSortOrder = SORT_ORDERS_BY_COLUMN[columnNumber];
				for (int i = 0; i < columnSortOrder.length; ++i) {
					result = compareColumnValue(columnSortOrder[i], e1, e2);
					if (result != 0)
						break;
				}
			}
			if (reversed)
				result = -result;
			return result;
		}
		/**
		 * Compares two markers, based only on the value of the specified column.
		 */
		int compareColumnValue(int columnNumber, IFileRevision e1, IFileRevision e2) {
			switch (columnNumber) {
				case 0: /* revision */
					return e1.getContentIdentifier().compareTo(e2.getContentIdentifier());
				case 1: /* date */
					long date1 = e1.getTimestamp();
					long date2 = e2.getTimestamp();
					if (date1 == date2)
						return 0;

					return date1>date2 ? -1 : 1;

				case 2: /* author */
					return getComparator().compare(e1.getAuthor(), e2.getAuthor());
				case 3: /* comment */
					return getComparator().compare(e1.getComment(), e2.getComment());
				default:
					return 0;
			}
		}
		/**
		 * Returns the number of the column by which this is sorting.
		 */
		public int getColumnNumber() {
			return columnNumber;
		}
		/**
		 * Returns true for descending, or false
		 * for ascending sorting order.
		 */
		public boolean isReversed() {
			return reversed;
		}
		/**
		 * Sets the sorting order.
		 */
		public void setReversed(boolean newReversed) {
			reversed = newReversed;
		}
	}
	protected IFileRevision adaptToFileRevision(Object element) {
		// Get the log entry for the provided object
		IFileRevision entry = null;
		if (element instanceof IFileRevision) {
			entry = (IFileRevision) element;
		} else if (element instanceof IAdaptable) {
			entry = ((IAdaptable) element).getAdapter(IFileRevision.class);
		}
		return entry;
	}

	/**
	 * Create a TableViewer that can be used to display a list of IFileRevision instances.
	 * This method provides the labels and sorter but does not provide a content provider
	 *
	 * @param parent
	 * @return TableViewer
	 */
	public TableViewer createTable(Composite parent) {
		Table table = new Table(parent, SWT.H_SCROLL | SWT.V_SCROLL | SWT.MULTI | SWT.FULL_SELECTION);
		table.setHeaderVisible(true);
		table.setLinesVisible(true);
		GridData data = new GridData(GridData.FILL_BOTH);
		table.setLayoutData(data);

		TableLayout layout = new TableLayout();
		table.setLayout(layout);

		TableViewer viewer = new TableViewer(table);

		createColumns(table, layout, viewer);

		viewer.setLabelProvider(new HistoryLabelProvider());

		// By default, reverse sort by revision.
		HistoryComparator sorter = new HistoryComparator(COL_REVISIONID);
		sorter.setReversed(true);
		viewer.setComparator(sorter);

		table.addDisposeListener(new DisposeListener() {
			@Override
			public void widgetDisposed(DisposeEvent e) {
				if(currentRevisionFont != null) {
					currentRevisionFont.dispose();
				}
			}
		});

		this.viewer = viewer;
		return viewer;
	}


	/**
	 * Creates the columns for the history table.
	 */
	private void createColumns(Table table, TableLayout layout, TableViewer viewer) {
		SelectionListener headerListener = getColumnListener(viewer);
		// revision
		TableColumn col = new TableColumn(table, SWT.NONE);
		col.setResizable(true);
		col.setText(TeamUIMessages.GenericHistoryTableProvider_Revision);
		col.addSelectionListener(headerListener);
		layout.addColumnData(new ColumnWeightData(20, true));

		// creation date
		col = new TableColumn(table, SWT.NONE);
		col.setResizable(true);
		col.setText(TeamUIMessages.GenericHistoryTableProvider_RevisionTime);
		col.addSelectionListener(headerListener);
		layout.addColumnData(new ColumnWeightData(20, true));

		// author
		col = new TableColumn(table, SWT.NONE);
		col.setResizable(true);
		col.setText(TeamUIMessages.GenericHistoryTableProvider_Author);
		col.addSelectionListener(headerListener);
		layout.addColumnData(new ColumnWeightData(20, true));

		//comment
		col = new TableColumn(table, SWT.NONE);
		col.setResizable(true);
		col.setText(TeamUIMessages.GenericHistoryTableProvider_Comment);
		col.addSelectionListener(headerListener);
		layout.addColumnData(new ColumnWeightData(50, true));
	}

	/**
	 * Adds the listener that sets the sorter.
	 */
	private SelectionListener getColumnListener(final TableViewer tableViewer) {
		/**
	 	 * This class handles selections of the column headers.
		 * Selection of the column header will cause resorting
		 * of the shown tasks using that column's sorter.
		 * Repeated selection of the header will toggle
		 * sorting order (ascending versus descending).
		 */
		return new SelectionAdapter() {
			/**
			 * Handles the case of user selecting the
			 * header area.
			 * <p>If the column has not been selected previously,
			 * it will set the sorter of that column to be
			 * the current tasklist sorter. Repeated
			 * presses on the same column header will
			 * toggle sorting order (ascending/descending).
			 */
			@Override
			public void widgetSelected(SelectionEvent e) {
				// column selected - need to sort
				int column = tableViewer.getTable().indexOf((TableColumn) e.widget);
				HistoryComparator oldSorter = (HistoryComparator)tableViewer.getComparator();
				if (oldSorter != null && column == oldSorter.getColumnNumber()) {
					oldSorter.setReversed(!oldSorter.isReversed());
					tableViewer.refresh();
				} else {
					tableViewer.setComparator(new HistoryComparator(column));
				}
			}
		};
	}

	public void setFile(IFileHistory fileHistory, IFile file)  {
		this.currentFileHistory = fileHistory;
		this.currentFile= file;
		this.currentRevision = findCurrentRevision();
	}

	private String findCurrentRevision() {

		RepositoryProvider teamProvider = RepositoryProvider.getProvider(currentFile.getProject());
		IFileRevision fileRevision = teamProvider.getFileHistoryProvider().getWorkspaceFileRevision(currentFile);

		if (fileRevision != null )
			return fileRevision.getContentIdentifier();

		return null;
	}

	public IFileHistory getIFileHistory() {
		return this.currentFileHistory;
	}

	public String getCurrentRevision() {
		return currentRevision;
	}
}

Back to the top