--- /dev/null
+package org.tianocore.frameworkwizard.platform.ui;
+
+import java.awt.*;
+import java.awt.event.*;
+import java.util.*;
+import java.util.List;
+
+import javax.swing.*;
+import javax.swing.event.TableModelEvent;
+import javax.swing.event.TableModelListener;
+import javax.swing.table.*;
+
+
+public class TableSorter extends AbstractTableModel {
+ /**
+ *
+ */
+ private static final long serialVersionUID = 1L;
+
+ protected TableModel tableModel;
+
+ public static final int DESCENDING = -1;
+ public static final int NOT_SORTED = 0;
+ public static final int ASCENDING = 1;
+
+ private static Directive EMPTY_DIRECTIVE = new Directive(-1, NOT_SORTED);
+
+
+ private Row[] viewToModel;
+ private int[] modelToView;
+
+ private JTableHeader tableHeader;
+ private MouseListener mouseListener;
+ private TableModelListener tableModelListener;
+
+ private List<Directive> sortingColumns = new ArrayList<Directive>();
+
+ public TableSorter() {
+ this.mouseListener = new MouseHandler();
+ this.tableModelListener = new TableModelHandler();
+ }
+
+ public TableSorter(TableModel tableModel) {
+ this();
+ setTableModel(tableModel);
+ }
+
+
+ private void clearSortingState() {
+ viewToModel = null;
+ modelToView = null;
+ }
+
+ public TableModel getTableModel() {
+ return tableModel;
+ }
+
+ public void setTableModel(TableModel tableModel) {
+ if (this.tableModel != null) {
+ this.tableModel.removeTableModelListener(tableModelListener);
+ }
+
+ this.tableModel = tableModel;
+ if (this.tableModel != null) {
+ this.tableModel.addTableModelListener(tableModelListener);
+ }
+
+ clearSortingState();
+ fireTableStructureChanged();
+ }
+
+ public JTableHeader getTableHeader() {
+ return tableHeader;
+ }
+
+ public void setTableHeader(JTableHeader tableHeader) {
+ if (this.tableHeader != null) {
+ this.tableHeader.removeMouseListener(mouseListener);
+ TableCellRenderer defaultRenderer = this.tableHeader.getDefaultRenderer();
+ if (defaultRenderer instanceof SortableHeaderRenderer) {
+ this.tableHeader.setDefaultRenderer(((SortableHeaderRenderer) defaultRenderer).tableCellRenderer);
+ }
+ }
+ this.tableHeader = tableHeader;
+ if (this.tableHeader != null) {
+ this.tableHeader.addMouseListener(mouseListener);
+ this.tableHeader.setDefaultRenderer(
+ new SortableHeaderRenderer(this.tableHeader.getDefaultRenderer()));
+ }
+ }
+
+ public boolean isSorting() {
+ return sortingColumns.size() != 0;
+ }
+
+ private Directive getDirective(int column) {
+ for (int i = 0; i < sortingColumns.size(); i++) {
+ Directive directive = (Directive)sortingColumns.get(i);
+ if (directive.column == column) {
+ return directive;
+ }
+ }
+ return EMPTY_DIRECTIVE;
+ }
+
+ public int getSortingStatus(int column) {
+ return getDirective(column).direction;
+ }
+
+ private void sortingStatusChanged() {
+ clearSortingState();
+ fireTableDataChanged();
+ if (tableHeader != null) {
+ tableHeader.repaint();
+ }
+ }
+
+ public void setSortingStatus(int column, int status) {
+ Directive directive = getDirective(column);
+ if (directive != EMPTY_DIRECTIVE) {
+ sortingColumns.remove(directive);
+ }
+ if (status != NOT_SORTED) {
+ sortingColumns.add(new Directive(column, status));
+ }
+ sortingStatusChanged();
+ }
+
+ protected Icon getHeaderRendererIcon(int column, int size) {
+ Directive directive = getDirective(column);
+ if (directive == EMPTY_DIRECTIVE) {
+ return null;
+ }
+ return new Arrow(directive.direction == DESCENDING, size, sortingColumns.indexOf(directive));
+ }
+
+ private void cancelSorting() {
+ sortingColumns.clear();
+ sortingStatusChanged();
+ }
+
+ private Row[] getViewToModel() {
+ if (viewToModel == null) {
+ int tableModelRowCount = tableModel.getRowCount();
+ viewToModel = new Row[tableModelRowCount];
+ for (int row = 0; row < tableModelRowCount; row++) {
+ viewToModel[row] = new Row(row);
+ }
+
+ if (isSorting()) {
+ Arrays.sort(viewToModel);
+ }
+ }
+ return viewToModel;
+ }
+
+ public int modelIndex(int viewIndex) {
+ return getViewToModel()[viewIndex].modelIndex;
+ }
+
+ private int[] getModelToView() {
+ if (modelToView == null) {
+ int n = getViewToModel().length;
+ modelToView = new int[n];
+ for (int i = 0; i < n; i++) {
+ modelToView[modelIndex(i)] = i;
+ }
+ }
+ return modelToView;
+ }
+
+ // TableModel interface methods
+
+ public int getRowCount() {
+ return (tableModel == null) ? 0 : tableModel.getRowCount();
+ }
+
+ public int getColumnCount() {
+ return (tableModel == null) ? 0 : tableModel.getColumnCount();
+ }
+
+ public String getColumnName(int column) {
+ return tableModel.getColumnName(column);
+ }
+
+ public Class<?> getColumnClass(int column) {
+ return tableModel.getColumnClass(column);
+ }
+
+ public boolean isCellEditable(int row, int column) {
+ return tableModel.isCellEditable(modelIndex(row), column);
+ }
+
+ public Object getValueAt(int row, int column) {
+ return tableModel.getValueAt(modelIndex(row), column);
+ }
+
+ public void setValueAt(Object aValue, int row, int column) {
+ tableModel.setValueAt(aValue, modelIndex(row), column);
+ }
+
+ // Helper classes
+
+ private class Row implements Comparable {
+ private int modelIndex;
+
+ public Row(int index) {
+ this.modelIndex = index;
+ }
+
+ public int compareTo(Object o) {
+ int row1 = modelIndex;
+ int row2 = ((Row) o).modelIndex;
+
+ for (Iterator it = sortingColumns.iterator(); it.hasNext();) {
+ Directive directive = (Directive) it.next();
+ int column = directive.column;
+ Object o1 = tableModel.getValueAt(row1, column);
+ Object o2 = tableModel.getValueAt(row2, column);
+
+ int comparison = 0;
+ // Define null less than everything, except null.
+ if (o1 == null && o2 == null) {
+ comparison = 0;
+ } else if (o1 == null) {
+ comparison = -1;
+ } else if (o2 == null) {
+ comparison = 1;
+ } else {
+ comparison = o1.toString().compareTo(o2.toString());;
+ }
+ if (comparison != 0) {
+ return directive.direction == DESCENDING ? -comparison : comparison;
+ }
+ }
+ return 0;
+ }
+ }
+
+ private class TableModelHandler implements TableModelListener {
+ public void tableChanged(TableModelEvent e) {
+ // If we're not sorting by anything, just pass the event along.
+ if (!isSorting()) {
+ clearSortingState();
+ fireTableChanged(e);
+ return;
+ }
+
+ // If the table structure has changed, cancel the sorting; the
+ // sorting columns may have been either moved or deleted from
+ // the model.
+ if (e.getFirstRow() == TableModelEvent.HEADER_ROW) {
+ cancelSorting();
+ fireTableChanged(e);
+ return;
+ }
+
+ // We can map a cell event through to the view without widening
+ // when the following conditions apply:
+ //
+ // a) all the changes are on one row (e.getFirstRow() == e.getLastRow()) and,
+ // b) all the changes are in one column (column != TableModelEvent.ALL_COLUMNS) and,
+ // c) we are not sorting on that column (getSortingStatus(column) == NOT_SORTED) and,
+ // d) a reverse lookup will not trigger a sort (modelToView != null)
+ //
+ // Note: INSERT and DELETE events fail this test as they have column == ALL_COLUMNS.
+ //
+ // The last check, for (modelToView != null) is to see if modelToView
+ // is already allocated. If we don't do this check; sorting can become
+ // a performance bottleneck for applications where cells
+ // change rapidly in different parts of the table. If cells
+ // change alternately in the sorting column and then outside of
+ // it this class can end up re-sorting on alternate cell updates -
+ // which can be a performance problem for large tables. The last
+ // clause avoids this problem.
+ int column = e.getColumn();
+ if (e.getFirstRow() == e.getLastRow()
+ && column != TableModelEvent.ALL_COLUMNS
+ && getSortingStatus(column) == NOT_SORTED
+ && modelToView != null) {
+ int viewIndex = getModelToView()[e.getFirstRow()];
+ fireTableChanged(new TableModelEvent(TableSorter.this,
+ viewIndex, viewIndex,
+ column, e.getType()));
+ return;
+ }
+
+ // Something has happened to the data that may have invalidated the row order.
+ clearSortingState();
+ fireTableDataChanged();
+ return;
+ }
+ }
+
+ private class MouseHandler extends MouseAdapter {
+ public void mouseClicked(MouseEvent e) {
+ JTableHeader h = (JTableHeader) e.getSource();
+ TableColumnModel columnModel = h.getColumnModel();
+ int viewColumn = columnModel.getColumnIndexAtX(e.getX());
+ int column = columnModel.getColumn(viewColumn).getModelIndex();
+ if (column != -1) {
+ int status = getSortingStatus(column);
+ if (!e.isControlDown()) {
+ cancelSorting();
+ }
+ // Cycle the sorting states through {NOT_SORTED, ASCENDING, DESCENDING} or
+ // {NOT_SORTED, DESCENDING, ASCENDING} depending on whether shift is pressed.
+ status = status + (e.isShiftDown() ? -1 : 1);
+ status = (status + 4) % 3 - 1; // signed mod, returning {-1, 0, 1}
+ setSortingStatus(column, status);
+ }
+ }
+ }
+
+ private static class Arrow implements Icon {
+ private boolean descending;
+ private int size;
+ private int priority;
+
+ public Arrow(boolean descending, int size, int priority) {
+ this.descending = descending;
+ this.size = size;
+ this.priority = priority;
+ }
+
+ public void paintIcon(Component c, Graphics g, int x, int y) {
+ Color color = c == null ? Color.GRAY : c.getBackground();
+ // In a compound sort, make each succesive triangle 20%
+ // smaller than the previous one.
+ int dx = (int)(size/2*Math.pow(0.8, priority));
+ int dy = descending ? dx : -dx;
+ // Align icon (roughly) with font baseline.
+ y = y + 5*size/6 + (descending ? -dy : 0);
+ int shift = descending ? 1 : -1;
+ g.translate(x, y);
+
+ // Right diagonal.
+ g.setColor(color.darker());
+ g.drawLine(dx / 2, dy, 0, 0);
+ g.drawLine(dx / 2, dy + shift, 0, shift);
+
+ // Left diagonal.
+ g.setColor(color.brighter());
+ g.drawLine(dx / 2, dy, dx, 0);
+ g.drawLine(dx / 2, dy + shift, dx, shift);
+
+ // Horizontal line.
+ if (descending) {
+ g.setColor(color.darker().darker());
+ } else {
+ g.setColor(color.brighter().brighter());
+ }
+ g.drawLine(dx, 0, 0, 0);
+
+ g.setColor(color);
+ g.translate(-x, -y);
+ }
+
+ public int getIconWidth() {
+ return size;
+ }
+
+ public int getIconHeight() {
+ return size;
+ }
+ }
+
+ private class SortableHeaderRenderer implements TableCellRenderer {
+ private TableCellRenderer tableCellRenderer;
+
+ public SortableHeaderRenderer(TableCellRenderer tableCellRenderer) {
+ this.tableCellRenderer = tableCellRenderer;
+ }
+
+ public Component getTableCellRendererComponent(JTable table,
+ Object value,
+ boolean isSelected,
+ boolean hasFocus,
+ int row,
+ int column) {
+ Component c = tableCellRenderer.getTableCellRendererComponent(table,
+ value, isSelected, hasFocus, row, column);
+ if (c instanceof JLabel) {
+ JLabel l = (JLabel) c;
+ l.setHorizontalTextPosition(JLabel.LEFT);
+ int modelColumn = table.convertColumnIndexToModel(column);
+ l.setIcon(getHeaderRendererIcon(modelColumn, l.getFont().getSize()));
+ }
+ return c;
+ }
+ }
+
+ private static class Directive {
+ private int column;
+ private int direction;
+
+ public Directive(int column, int direction) {
+ this.column = column;
+ this.direction = direction;
+ }
+ }
+}
projects / mirror_edk2.git / commitdiff