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package org.seasar.uruma.viewer; |
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import java.util.HashMap; |
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import java.util.Map; |
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import org.eclipse.jface.viewers.IBaseLabelProvider; |
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import org.eclipse.jface.viewers.ITableLabelProvider; |
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import org.eclipse.jface.viewers.TableViewer; |
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import org.eclipse.jface.viewers.Viewer; |
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import org.eclipse.jface.viewers.ViewerComparator; |
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import org.eclipse.swt.SWT; |
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import org.eclipse.swt.events.SelectionEvent; |
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import org.eclipse.swt.events.SelectionListener; |
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import org.eclipse.swt.widgets.Table; |
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import org.eclipse.swt.widgets.TableColumn; |
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public class GenericTableViewerComparator extends ViewerComparator { |
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private Table table; |
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40 | 8 | private Map<TableColumn, Integer> columnMap = new HashMap<TableColumn, Integer>(); |
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private TableColumn sortKey; |
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44 | 8 | private SortingState sortingState = SortingState.NONE; |
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public GenericTableViewerComparator() { |
50 | 8 | super(new StringAndNumberComparator()); |
51 | 8 | } |
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protected void setupColumnMap(final TableViewer viewer) { |
54 | 8 | this.table = viewer.getTable(); |
55 | 8 | TableColumn[] columns = table.getColumns(); |
56 | 8 | if (columns.length == 0) { |
57 | 0 | return; |
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} |
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60 | 32 | for (int i = 0; i < columns.length; i++) { |
61 | 24 | columnMap.put(columns[i], i); |
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63 | 24 | columns[i].addSelectionListener(new SelectionListener() { |
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public void widgetDefaultSelected(final SelectionEvent e) { |
65 | 0 | } |
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67 | 24 | public void widgetSelected(final SelectionEvent e) { |
68 | 0 | setSortKey((TableColumn) e.widget); |
69 | 0 | viewer.setInput(viewer.getInput()); |
70 | 0 | } |
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}); |
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} |
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74 | 8 | sortKey = columns[0]; |
75 | 8 | } |
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@Override |
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public int compare(final Viewer viewer, final Object e1, final Object e2) { |
83 | 40 | TableViewer tableViewer = (TableViewer) viewer; |
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85 | 40 | if (this.table == null) { |
86 | 8 | setupColumnMap(tableViewer); |
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} |
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89 | 40 | int cat1 = category(e1); |
90 | 40 | int cat2 = category(e2); |
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92 | 40 | if (cat1 != cat2) { |
93 | 0 | return cat1 - cat2; |
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} |
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96 | 40 | Integer sortColumn = columnMap.get(sortKey); |
97 | 40 | if (sortColumn != null) { |
98 | 40 | int result = doCompare(tableViewer, e1, e2, sortColumn.intValue()); |
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100 | 40 | if (sortingState == SortingState.ASCENDING) { |
101 | 0 | return result; |
102 | 40 | } else if (sortingState == SortingState.DESCENDING) { |
103 | 0 | return result * (-1); |
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} else { |
105 | 40 | return 0; |
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} |
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} else { |
108 | 0 | return 0; |
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} |
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} |
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protected int doCompare(final TableViewer viewer, final Object e1, |
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final Object e2, final int sortColumn) { |
128 | 40 | IBaseLabelProvider baseLabelProvider = viewer.getLabelProvider(); |
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130 | 40 | String value1 = ""; |
131 | 40 | String value2 = ""; |
132 | 40 | if (baseLabelProvider instanceof ITableLabelProvider) { |
133 | 40 | ITableLabelProvider prov = (ITableLabelProvider) baseLabelProvider; |
134 | 40 | value1 = prov.getColumnText(e1, sortColumn); |
135 | 40 | value2 = prov.getColumnText(e2, sortColumn); |
136 | 40 | } else { |
137 | 0 | value1 = e1.toString(); |
138 | 0 | value2 = e2.toString(); |
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} |
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141 | 40 | if (value1 == null) { |
142 | 0 | value1 = ""; |
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} |
144 | 40 | if (value2 == null) { |
145 | 0 | value2 = ""; |
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} |
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148 | 40 | return getComparator().compare(value1, value2); |
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} |
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public void setSortKey(final TableColumn tableColumn) { |
159 | 0 | if ((tableColumn != null) && !tableColumn.isDisposed()) { |
160 | 0 | sortKey = tableColumn; |
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162 | 0 | if (sortingState == SortingState.DESCENDING) { |
163 | 0 | sortingState = SortingState.ASCENDING; |
164 | 0 | table.setSortColumn(sortKey); |
165 | 0 | table.setSortDirection(SWT.UP); |
166 | 0 | } else if (sortingState == SortingState.ASCENDING) { |
167 | 0 | sortingState = SortingState.NONE; |
168 | 0 | table.setSortColumn(null); |
169 | 0 | table.setSortDirection(SWT.NONE); |
170 | 0 | } else if (sortingState == SortingState.NONE) { |
171 | 0 | sortingState = SortingState.DESCENDING; |
172 | 0 | table.setSortColumn(sortKey); |
173 | 0 | table.setSortDirection(SWT.DOWN); |
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} |
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} |
176 | 0 | } |
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} |