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index.zulzul<?page title="ZK Big Listbox Demo for 1 Trillion Data"?>
<zk>
<window title="Big Listbox Demo for 1 Trillion Data" border="normal"
apply="pkg$.B65_ZK_2172_Composer" width="100%"
height="100%">
<div>
<button label="Set Frozen"
onClick="myComp.setFrozenCols(3);" />
</div>
<vlayout width="100%" vflex="1">
<biglistbox id="myComp" hflex="1" vflex="1"></biglistbox>
</vlayout>
</window>
</zk>
B65_ZK_2172_Composer.javajavaimport java.util.Arrays;
import java.util.Comparator;
import java.util.List;
import org.zkoss.zk.ui.Component;
import org.zkoss.zk.ui.event.MouseEvent;
import org.zkoss.zk.ui.event.SelectEvent;
import org.zkoss.zk.ui.select.SelectorComposer;
import org.zkoss.zk.ui.select.annotation.Listen;
import org.zkoss.zk.ui.select.annotation.Wire;
import org.zkoss.zk.ui.util.Clients;
import org.zkoss.zkmax.zul.Biglistbox;
import org.zkoss.zkmax.zul.MatrixComparatorProvider;
import org.zkoss.zkmax.zul.MatrixRenderer;
import org.zkoss.zul.Div;
import org.zkoss.zul.Textbox;
import org.zkoss.zul.Window;
import java.util.AbstractList;
import java.util.ArrayList;
import java.util.Comparator;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import org.zkoss.lang.Objects;
import org.zkoss.zkmax.zul.MatrixModel;
import org.zkoss.zul.AbstractListModel;
import org.zkoss.zul.event.ListDataEvent;
import org.zkoss.zul.ext.Sortable;
/**
* A demo of Big listbox to handle 1 trillion data.
* @author jumperchen
*/
public class B65_ZK_2172_Composer extends SelectorComposer<Window> {
@Wire
private Biglistbox myComp;
@Wire
private Div tip;
@Wire
private Textbox content;
// images marks
private String[] images = { "aim", "amazon", "android", "apple", "bebo",
"bing", "blogger", "delicious", "digg", "facebook", "flickr",
"friendfeed", "google", "linkedin", "netvibes", "newsvine",
"reggit", "rss", "sharethis", "stumbleupon", "technorati",
"twitter", "utorrent", "vimeo", "vkontakte", "wikipedia", "windows",
"yahoo" };
public void doAfterCompose(Window comp) throws Exception {
super.doAfterCompose(comp);
// specify a trillion faker model
myComp.setModel(new FakerMatrixModel(10 * 10, 10 * 10));
myComp.setColWidth("130px");
myComp.setMatrixRenderer(new MatrixRenderer<List<String>>() {
public String renderCell(Component owner, List<String> data,
int rowIndex, int colIndex) throws Exception {
String d = data.get(colIndex);
d = d.replace("ZK", "<span class='red' title='ZK'>ZK</span>")
.replace("Hello", "<span class='blue' title='Hello'>Hello</span>");
return "<div class='images_" + (colIndex%28) + "' title='x=" +
colIndex + ",y=" + rowIndex + "'>" + d + "</div>";
}
public String renderHeader(Component owner, List<String> data,
int rowIndex, int colIndex) throws Exception {
return "<div class='images_" + (colIndex % 28) + "' title='"
+ images[colIndex % 28] + "'>" + data.get(colIndex)
+ "</div>";
}
});
myComp.setSortAscending(new MyMatrixComparatorProvider<List<String>>(true));
myComp.setSortDescending(new MyMatrixComparatorProvider<List<String>>(false));
}
@Listen("onClick=#myComp; onSort=#myComp")
public void onClick() {
tip.setVisible(true); // reset first, if the tip is shown at client only.
tip.setVisible(false);
}
@SuppressWarnings("unchecked")
@Listen("onCellClick=#myComp")
public void onCellClick(MouseEvent evt) {
Integer[] axis = (Integer[]) evt.getData();
// shift some pixels to make it look better
tip.setStyle("left: " + (evt.getPageX() - 30) + "px; top:"
+ (evt.getPageY() + 20) + "px");
tip.setVisible(true);
FakerMatrixModel fmm = (FakerMatrixModel) myComp.getModel();
content.setValue(String.valueOf(fmm.getCellAt(
fmm.getElementAt(axis[1]), axis[0])));
content.setAttribute("axis", axis); // store the change for update
Clients.evalJavaScript("doPosition()"); // resync the tooltip position
}
@Listen("onClick=#update; onOK=#content")
public void onClick$update() {
Integer[] axis = (Integer[]) content.getAttribute("axis");
FakerMatrixModel fmm = (FakerMatrixModel) myComp.getModel();
fmm.update(axis, content.getValue());
tip.setVisible(false);
myComp.focus(); // pass focus to the big listbox
}
@Listen("onSelect=#myComp")
public void onSelect(SelectEvent evt) {
System.out.println("You listen onSelect: "
+ Arrays.asList(((Integer[]) evt.getData())));
}
// Matrix comparator provider
private class MyMatrixComparatorProvider<T> implements
MatrixComparatorProvider<List<String>> {
private int _x = -1;
private boolean _acs;
private MyComparator _cmpr;
public MyMatrixComparatorProvider(boolean asc) {
_acs = asc;
_cmpr = new MyComparator(this);
}
public Comparator<List<String>> getColumnComparator(int columnIndex) {
this._x = columnIndex;
return _cmpr;
}
// a real String comparator
private class MyComparator implements Comparator<List<String>> {
private MyMatrixComparatorProvider _mmc;
public MyComparator(MyMatrixComparatorProvider mmc) {
_mmc = mmc;
}
public int compare(List<String> o1, List<String> o2) {
return o1.get(_mmc._x).compareTo(o2.get(_mmc._x))
* (_acs ? 1 : -1);
}
}
}
}
class FakerMatrixModel<Head extends List, Row extends List, Cell, Header> extends
AbstractListModel<Row> implements MatrixModel<Row, Head, Cell, Header>, Sortable {
// a rendering function
private interface Fun<T> {
public T apply(int index);
}
// A faker of key list implementation that contains a key to speed up the performance.
// Because Java Collection framework didn't handle it well for huge data, it will
// go through whole the list entries to receive the value for those methods,
// hashCode(), equals(), and toString()
private class FakerKeyList<T> extends AbstractList<T> {
final int _size;
Map<String, T> _updateCache = new HashMap<String,T> ();
final Fun<?> _fn;
final String _key;
public FakerKeyList(int size, int key, Fun<?> fn) {
_size = size;
_key = key + "_" + size;
_fn = fn;
}
public int size() {
return _size;
}
public boolean isEmpty() {
return _size == 0;
}
public T get(int index) {
// if changed, returns the changed value
Object val = _updateCache.get(String.valueOf(index));
if (val != null)
return (T) val;
return (T) _fn.apply(index);
}
public T set(int index, T element) {
_updateCache.put(String.valueOf(index), element);
return element;
}
public int hashCode() {
return _key.hashCode();
}
public boolean equals(Object obj) {
if (obj == this)
return true;
if (obj instanceof FakerKeyList) {
return _key.equals(((FakerKeyList)(obj))._key);
}
return false;
}
public String toString() {
return _key;
}
}
private int _colSize;
private int _rowSize;
private Map<String, List<String>> _rowCache;
private List<List<String>> _headerData;
private Comparator<Cell> _sorting;
private boolean _sortDir = true;
@SuppressWarnings("unchecked")
public void sort(Comparator cmpr, boolean ascending) {
_sorting = cmpr;
_sortDir = ascending;
fireEvent(ListDataEvent.STRUCTURE_CHANGED, -1, -1);
}
public String getSortDirection(Comparator cmpr) {
if (Objects.equals(_sorting, cmpr))
return _sortDir ? "ascending" : "descending";
return "natural";
}
public FakerMatrixModel(int colSize, int rowSize) {
_colSize = colSize;
_rowSize = rowSize;
_rowCache = new HashMap<String, List<String>>();
_headerData = new ArrayList<List<String>>();
_headerData.add(new FakerKeyList<String>(colSize, 0, new Fun() {
public Object apply(int index) {
return "Header x = " + index;
}
}));
}
public FakerMatrixModel(int colSize, int rowSize, int headSize) {
_colSize = colSize;
_rowSize = rowSize;
_rowCache = new HashMap<String, List<String>>();
_headerData = new ArrayList<List<String>>();
for (int i = 0; i < headSize; i++) {
final int rowIndex = i;
_headerData.add(new FakerKeyList<String>(colSize, 0, new Fun() {
public Object apply(int index) {
return "Header x = " + index + ", y = " + rowIndex;
}
}));
}
}
public void update(Integer[] axis, String value) {
List<String> list = _rowCache.get(String.valueOf(axis[1]));
list.set(axis[0], value);
this.fireEvent(ListDataEvent.CONTENTS_CHANGED, axis[0], axis[1]);
}
public void setSize(int colSize, int rowSize) {
_colSize = colSize;
_rowSize = rowSize;
this.fireEvent(ListDataEvent.STRUCTURE_CHANGED, -1, -1);
}
@SuppressWarnings("unchecked")
public Row getElementAt(int index) {
final int rowIndex = _sortDir ? index : getSize() - index - 1; // handle the sorting
final String key = String.valueOf(rowIndex);
List<String> value = _rowCache.get(key);
if (value == null) {
value = new FakerKeyList<String>(_colSize, rowIndex, new Fun() {
public Object apply(int index) {
return "y = " + rowIndex;
}});
_rowCache.put(key, value);
}
return (Row) value;
}
public int getSize() {
return _rowSize;
}
public int getColumnSize() {
return _colSize;
}
public int getHeadSize() {
return _headerData.size();
}
@SuppressWarnings("unchecked")
public Head getHeadAt(int rowIndex) {
return (Head) _headerData.get(rowIndex);
}
@SuppressWarnings("unchecked")
public Cell getCellAt(Row rowData, int columnIndex) {
return (Cell) rowData.get(columnIndex);
}
@SuppressWarnings("unchecked")
public Header getHeaderAt(Head headData, int columnIndex) {
return (Header) headData.get(columnIndex);
}
}