| /******************************************************************************* |
| * Copyright (c) 2000, 2004 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.ui.views.bookmarkexplorer; |
| |
| import org.eclipse.core.resources.IMarker; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.jface.dialogs.IDialogSettings; |
| import org.eclipse.jface.viewers.Viewer; |
| import org.eclipse.jface.viewers.ViewerSorter; |
| |
| class BookmarkSorter extends ViewerSorter { |
| |
| private int[] directions; |
| |
| private int[] priorities; |
| |
| final static int ASCENDING = 1; |
| |
| final static int DESCENDING = -1; |
| |
| final static int DESCRIPTION = 0; |
| |
| final static int RESOURCE = 1; |
| |
| final static int FOLDER = 2; |
| |
| final static int LOCATION = 3; |
| |
| final static int CREATION_TIME = 4; |
| |
| final static int[] DEFAULT_PRIORITIES = { FOLDER, RESOURCE, LOCATION, |
| DESCRIPTION, CREATION_TIME }; |
| |
| final static int[] DEFAULT_DIRECTIONS = { ASCENDING, //description |
| ASCENDING, //resource |
| ASCENDING, //folder |
| ASCENDING, //location |
| ASCENDING, }; //creation time |
| |
| public BookmarkSorter() { |
| resetState(); |
| } |
| |
| public void reverseTopPriority() { |
| directions[priorities[0]] *= -1; |
| } |
| |
| public void setTopPriority(int priority) { |
| if (priority < 0 || priority >= priorities.length) |
| return; |
| |
| int index = -1; |
| for (int i = 0; i < priorities.length; i++) { |
| if (priorities[i] == priority) |
| index = i; |
| } |
| |
| if (index == -1) { |
| resetState(); |
| return; |
| } |
| |
| //shift the array |
| for (int i = index; i > 0; i--) { |
| priorities[i] = priorities[i - 1]; |
| } |
| priorities[0] = priority; |
| directions[priority] = DEFAULT_DIRECTIONS[priority]; |
| } |
| |
| public void setTopPriorityDirection(int direction) { |
| if (direction == ASCENDING || direction == DESCENDING) |
| directions[priorities[0]] = direction; |
| } |
| |
| public int getTopPriorityDirection() { |
| return directions[priorities[0]]; |
| } |
| |
| public int getTopPriority() { |
| return priorities[0]; |
| } |
| |
| public int[] getPriorities() { |
| return priorities; |
| } |
| |
| public void resetState() { |
| priorities = new int[DEFAULT_PRIORITIES.length]; |
| System.arraycopy(DEFAULT_PRIORITIES, 0, priorities, 0, |
| priorities.length); |
| directions = new int[DEFAULT_DIRECTIONS.length]; |
| System.arraycopy(DEFAULT_DIRECTIONS, 0, directions, 0, |
| directions.length); |
| } |
| |
| private int compare(IMarker marker1, IMarker marker2, int depth) { |
| if (depth >= priorities.length) |
| return 0; |
| |
| int column = priorities[depth]; |
| switch (column) { |
| case DESCRIPTION: { |
| String desc1 = marker1.getAttribute(IMarker.MESSAGE, "");//$NON-NLS-1$ |
| String desc2 = marker2.getAttribute(IMarker.MESSAGE, "");//$NON-NLS-1$ |
| int result = collator.compare(desc1, desc2); |
| if (result == 0) |
| return compare(marker1, marker2, depth + 1); |
| return result * directions[column]; |
| } |
| case RESOURCE: { |
| String res1 = marker1.getResource().getName(); |
| String res2 = marker2.getResource().getName(); |
| int result = collator.compare(res1, res2); |
| if (result == 0) |
| return compare(marker1, marker2, depth + 1); |
| return result * directions[column]; |
| } |
| case FOLDER: { |
| String folder1 = BookmarkLabelProvider.getContainerName(marker1); |
| String folder2 = BookmarkLabelProvider.getContainerName(marker2); |
| int result = collator.compare(folder1, folder2); |
| if (result == 0) |
| return compare(marker1, marker2, depth + 1); |
| return result * directions[column]; |
| } |
| case LOCATION: { |
| int line1 = marker1.getAttribute(IMarker.LINE_NUMBER, -1); |
| int line2 = marker2.getAttribute(IMarker.LINE_NUMBER, -1); |
| int result = line1 - line2; |
| if (result == 0) |
| return compare(marker1, marker2, depth + 1); |
| return result * directions[column]; |
| } |
| case CREATION_TIME: { |
| long result; |
| try { |
| result = marker1.getCreationTime() - marker2.getCreationTime(); |
| } catch (CoreException e) { |
| result = 0; |
| } |
| if (result == 0) |
| return compare(marker1, marker2, depth + 1); |
| return ((int) result) * directions[column]; |
| } |
| } |
| |
| return 0; |
| } |
| |
| public int compare(Viewer viewer, Object e1, Object e2) { |
| IMarker marker1 = (IMarker) e1; |
| IMarker marker2 = (IMarker) e2; |
| |
| return compare(marker1, marker2, 0); |
| } |
| |
| public void saveState(IDialogSettings settings) { |
| if (settings == null) |
| return; |
| |
| for (int i = 0; i < priorities.length; i++) { |
| settings.put("priority" + i, priorities[i]);//$NON-NLS-1$ |
| settings.put("direction" + i, directions[i]);//$NON-NLS-1$ |
| } |
| } |
| |
| public void restoreState(IDialogSettings settings) { |
| if (settings == null) |
| return; |
| |
| try { |
| for (int i = 0; i < priorities.length; i++) { |
| priorities[i] = settings.getInt("priority" + i);//$NON-NLS-1$ |
| directions[i] = settings.getInt("direction" + i);//$NON-NLS-1$ |
| } |
| } catch (NumberFormatException e) { |
| resetState(); |
| } |
| } |
| } |