/*
* Ext GWT 2.2.4 - Ext for GWT
* Copyright(c) 2007-2010, Ext JS, LLC.
* licensing@extjs.com
*
* http://extjs.com/license
*/
package com.extjs.gxt.ui.client.widget.grid.filters;
import java.util.ArrayList;
import java.util.List;
import com.extjs.gxt.ui.client.GXT;
import com.extjs.gxt.ui.client.data.BaseNumericFilterConfig;
import com.extjs.gxt.ui.client.data.FilterConfig;
import com.extjs.gxt.ui.client.event.BaseEvent;
import com.extjs.gxt.ui.client.event.Events;
import com.extjs.gxt.ui.client.event.FieldEvent;
import com.extjs.gxt.ui.client.event.Listener;
import com.extjs.gxt.ui.client.event.MenuEvent;
import com.extjs.gxt.ui.client.util.DelayedTask;
import com.extjs.gxt.ui.client.widget.form.Field;
import com.extjs.gxt.ui.client.widget.form.NumberField;
import com.extjs.gxt.ui.client.widget.menu.Menu;
import com.extjs.gxt.ui.client.widget.menu.MenuItem;
import com.google.gwt.event.dom.client.KeyCodes;
import com.google.gwt.user.client.ui.AbstractImagePrototype;
/**
* Custom implementation of <code>Menu</code> that has preconfigured items for
* LESSTHAN, GREATERTHAN, and EQUALs.
*
*/
public class RangeMenu extends Menu {
enum RangeItem {
EQUAL("eq"), GREATERTHAN("gt"), LESSTHAN("lt");
private final String key;
private RangeItem(String key) {
this.key = key;
}
public String getKey() {
return key;
}
}
protected NumberField lt, gt, eq;
private NumericFilter filter;
private List<RangeItem> rangeItems = new ArrayList<RangeItem>();
private DelayedTask updateTask = new DelayedTask(new Listener<BaseEvent>() {
public void handleEvent(BaseEvent be) {
fireUpdate();
}
});
public RangeMenu(NumericFilter filter) {
this.filter = filter;
addListener(Events.BeforeHide, new Listener<MenuEvent>() {
public void handleEvent(MenuEvent be) {
// blur the field because of empty text
if (lt != null && lt.isRendered()) {
lt.el().firstChild().blur();
blurField(lt);
}
if (gt != null && gt.isRendered()) {
gt.el().firstChild().blur();
blurField(gt);
}
if (eq != null && eq.isRendered()) {
eq.el().firstChild().blur();
blurField(eq);
}
}
});
}
/**
* Returns the menu's range items.
*
* @return the range items
*/
public List<RangeItem> getRangeItems() {
return rangeItems;
}
/**
* Returns the menu's value.
*
* @return the value
*/
public List<FilterConfig> getValue() {
List<FilterConfig> configs = new ArrayList<FilterConfig>();
if (eq != null && eq.getValue() != null && eq.isValid()) {
FilterConfig config = new BaseNumericFilterConfig("numeric", "eq", eq.getValue());
configs.add(config);
}
if (lt != null && lt.getValue() != null && lt.isValid()) {
FilterConfig config = new BaseNumericFilterConfig("numeric", "lt", lt.getValue());
configs.add(config);
}
if (gt != null && gt.getValue() != null && gt.isValid()) {
FilterConfig config = new BaseNumericFilterConfig("numeric", "gt", gt.getValue());
configs.add(config);
}
return configs;
}
public void setEmptyText(String emptyText) {
if (lt != null) {
lt.setEmptyText(emptyText);
}
if (gt != null) {
gt.setEmptyText(emptyText);
}
if (eq != null) {
eq.setEmptyText(emptyText);
}
}
public void setFieldWidth(int width) {
if (lt != null) {
lt.setWidth(width);
}
if (gt != null) {
gt.setWidth(width);
}
if (eq != null) {
eq.setWidth(width);
}
}
/**
* Sets the menu's range items (defaults to EQUAL, GREATERTHAN, LESSTHAN).
*
* @param rangeItems the range items
*/
public void setRangeItems(List<RangeItem> rangeItems) {
this.rangeItems = rangeItems;
removeAll();
AbstractImagePrototype icon = null;
for (RangeItem item : rangeItems) {
NumberField field = new NumberField() {
@Override
protected void onKeyUp(FieldEvent fe) {
super.onKeyUp(fe);
RangeMenu.this.onFilterKeyUp(fe);
}
};
field.setEmptyText(filter.getMessages().getEmptyText());
field.setWidth(filter.getWidth());
switch (item) {
case LESSTHAN:
icon = GXT.IMAGES.grid_filter_lessThan();
lt = field;
break;
case GREATERTHAN:
icon = GXT.IMAGES.grid_filter_greaterThan();
gt = field;
break;
case EQUAL:
icon = GXT.IMAGES.grid_filter_equal();
eq = field;
break;
}
MenuItem menuItem = new MenuItem();
menuItem.setCanActivate(false);
menuItem.setHideOnClick(false);
menuItem.setIcon(icon);
menuItem.setWidget(field);
add(menuItem);
}
layout();
}
/**
* Sets the menu's values
*
* @param values the values
*/
public void setValue(List<FilterConfig> values) {
for (FilterConfig config : values) {
String c = config.getComparison();
if ("eq".equals(c)) {
eq.setValue((Number) config.getValue());
} else if ("lt".equals(c)) {
lt.setValue((Number) config.getValue());
} else if ("gt".equals(c)) {
gt.setValue((Number) config.getValue());
}
}
}
protected void onFilterKeyUp(FieldEvent fe) {
int kc = fe.getKeyCode();
if (kc == KeyCodes.KEY_ENTER && fe.getField().isValid()) {
fe.stopEvent();
hide(true);
return;
}
if (fe.getField() == eq) {
if (lt != null && lt.getValue() != null) {
lt.setValue(null);
}
if (gt != null && gt.getValue() != null) {
gt.setValue(null);
}
} else {
eq.setValue(null);
}
updateTask.delay(filter.getUpdateBuffer());
}
private native void blurField(Field<?> f) /*-{
f.@com.extjs.gxt.ui.client.widget.form.Field::onBlur(Lcom/extjs/gxt/ui/client/event/ComponentEvent;)(null)
}-*/;
private void fireUpdate() {
filter.fireUpdate();
}
}