/*
* ListBox.java
*
* Created on July 5, 2007, 6:12 PM
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package com.totsp.gwittir.client.ui;
import com.google.gwt.user.client.ui.ChangeListener;
import com.google.gwt.user.client.ui.ClickListener;
import com.google.gwt.user.client.ui.FocusListener;
import com.google.gwt.user.client.ui.HasFocus;
import com.google.gwt.user.client.ui.KeyboardListener;
import com.google.gwt.user.client.ui.SourcesChangeEvents;
import com.google.gwt.user.client.ui.SourcesFocusEvents;
import com.google.gwt.user.client.ui.Widget;
import com.totsp.gwittir.client.log.Level;
import com.totsp.gwittir.client.log.Logger;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.Vector;
/**
*
* @author <a href="mailto:cooper@screaming-penguin.com">Robert "kebernet" Cooper</a>
*/
public class ListBox<T> extends AbstractBoundCollectionWidget<T, String>
implements HasFocus, SourcesFocusEvents, SourcesChangeEvents {
public static final String VALUE_PROPERTY_NAME = "value";
private static final Logger LOGGER = Logger.getLogger(ListBox.class.toString());
private ArrayList selected = new ArrayList();
private Collection<T> options = new ArrayList();
private com.google.gwt.user.client.ui.ListBox base;
private Vector changeListeners = new Vector();
/** Creates a new instance of ListBox */
public ListBox() {
super();
this.base = new com.google.gwt.user.client.ui.ListBox();
this.setRenderer(ToStringRenderer.INSTANCE);
this.setComparator(SimpleComparator.INSTANCE);
this.base.addClickListener(new ClickListener() {
public void onClick(Widget sender) {
update();
}
});
this.base.addChangeListener(new ChangeListener() {
public void onChange(Widget sender) {
update();
}
// foo!
});
super.initWidget(base);
}
public int getAbsoluteLeft() {
int retValue;
retValue = this.base.getAbsoluteLeft();
return retValue;
}
public int getAbsoluteTop() {
int retValue;
retValue = this.base.getAbsoluteTop();
return retValue;
}
public void setAccessKey(char key) {
this.base.setAccessKey(key);
}
public void setEnabled(boolean enabled) {
this.base.setEnabled(enabled);
}
public boolean isEnabled() {
boolean retValue;
retValue = this.base.isEnabled();
return retValue;
}
public void setFocus(boolean focused) {
this.base.setFocus(focused);
}
public void setHeight(String height) {
this.base.setHeight(height);
}
public int getItemCount() {
int retValue;
retValue = this.base.getItemCount();
return retValue;
}
public boolean isItemSelected(int index) {
boolean retValue;
retValue = this.base.isItemSelected(index);
return retValue;
}
public void setItemText(int index, String text) {
this.base.setItemText(index, text);
}
public String getItemText(int index) {
String retValue;
retValue = this.base.getItemText(index);
return retValue;
}
public void setMultipleSelect(boolean multiple) {
this.base.setMultipleSelect(multiple);
if (this.selected.size() > 1) {
Object o = this.selected.get(0);
this.selected = new ArrayList();
this.selected.add(o);
}
}
public boolean isMultipleSelect() {
return this.base.isMultipleSelect();
}
public void setName(String name) {
this.base.setName(name);
}
public String getName() {
return this.base.getName();
}
@Override
public int getOffsetHeight() {
return this.base.getOffsetHeight();
}
public int getOffsetWidth() {
return this.base.getOffsetWidth();
}
public void setOptions(Collection<T> options) {
this.options = new ArrayList();
base.clear();
ArrayList newSelected = new ArrayList();
for (Iterator<T> it = options.iterator(); it.hasNext();) {
T item = it.next();
this.base.addItem(this.getRenderer().render(item));
if (contains(this.selected, item)) {
this.base.setItemSelected(this.base.getItemCount() - 1, true);
newSelected.add(item);
}
this.options.add(item);
}
ArrayList old = this.selected;
this.selected = newSelected;
if (this.isMultipleSelect()) {
changes.firePropertyChange(VALUE_PROPERTY_NAME, old, selected);
} else {
Object prev = ((old == null) || (old.size() == 0)) ? null : old.get(0);
Object curr = (this.selected.size() == 0) ? null
: this.selected.get(0);
changes.firePropertyChange(VALUE_PROPERTY_NAME, prev, curr);
}
fireChangeListeners();
}
public Collection getOptions() {
return options;
}
@Override
public void setPixelSize(int width, int height) {
this.base.setPixelSize(width, height);
}
@Override
public void setRenderer(Renderer renderer) {
super.setRenderer(renderer);
this.setOptions(this.options);
}
public int getSelectedIndex() {
return this.base.getSelectedIndex();
}
@Override
public void setSize(String width, String height) {
this.base.setSize(width, height);
}
@Override
public void setStyleName(String style) {
this.base.setStyleName(style);
}
@Override
public String getStyleName() {
String retValue;
retValue = this.base.getStyleName();
return retValue;
}
public void setTabIndex(int index) {
this.base.setTabIndex(index);
}
public int getTabIndex() {
int retValue;
retValue = this.base.getTabIndex();
return retValue;
}
@Override
public void setTitle(String title) {
this.base.setTitle(title);
}
@Override
public String getTitle() {
return this.base.getTitle();
}
public void setValue(Collection<T> value) {
int i = 0;
ArrayList old = this.selected;
this.selected = new ArrayList();
for (Iterator<T> it = this.options.iterator(); it.hasNext(); i++) {
T item = it.next();
if (contains(value, item)) {
base.setItemSelected(i, true);
this.selected.add(item);
} else {
base.setItemSelected(i, false);
}
}
changes.firePropertyChange(VALUE_PROPERTY_NAME, old, selected);
fireChangeListeners();
}
public Collection<T> getValue() {
ListBox.LOGGER.log(Level.SPAM,
"IsMultipleSelect. Returning collection", null);
return this.selected;
}
public void setVisibleItemCount(final int visibleItems) {
this.base.setVisibleItemCount(visibleItems);
}
public int getVisibleItemCount() {
int retValue;
retValue = this.base.getVisibleItemCount();
return retValue;
}
public void setWidth(final String width) {
this.base.setWidth(width);
}
public void addChangeListener(final ChangeListener listener) {
this.changeListeners.add(listener);
}
public void addClickListener(final ClickListener listener) {
this.base.addClickListener(listener);
}
public void addFocusListener(final FocusListener listener) {
this.base.addFocusListener(listener);
}
public void addItem(final T o) {
options.add(o);
this.base.addItem(this.getRenderer().render(o));
}
public void addKeyboardListener(KeyboardListener listener) {
this.base.addKeyboardListener(listener);
}
public void addStyleName(final String style) {
this.base.addStyleName(style);
}
public boolean equals(final Object obj) {
if (obj == null) {
return false;
}
final ListBox other = (ListBox) obj;
if ((this.options != other.options) &&
((this.options == null) || !this.options.equals(other.options))) {
return false;
}
return true;
}
public int hashCode() {
return this.base.hashCode();
}
public void removeChangeListener(final ChangeListener listener) {
this.changeListeners.remove(listener);
}
public void removeClickListener(final ClickListener listener) {
this.base.removeClickListener(listener);
}
public void removeFocusListener(final FocusListener listener) {
this.base.removeFocusListener(listener);
}
public void removeItem(final Object o) {
int i = 0;
for (Iterator it = this.options.iterator(); it.hasNext(); i++) {
Object option = it.next();
if (this.getComparator().compare(option, o) == 0) {
this.options.remove(option);
this.base.removeItem(i);
this.update();
}
}
}
public void removeItem(final int index) {
this.base.removeItem(index);
}
public void removeKeyboardListener(final KeyboardListener listener) {
this.base.removeKeyboardListener(listener);
}
public void removeStyleName(final String style) {
this.base.removeStyleName(style);
}
protected boolean contains(final Collection c, final Object o) {
for (Iterator it = c.iterator(); it.hasNext();) {
Object next = it.next();
if (this.getComparator().compare(o, next) == 0) {
return true;
}
}
return false;
}
private void fireChangeListeners() {
for (Iterator it = this.changeListeners.iterator(); it.hasNext();) {
ChangeListener l = (ChangeListener) it.next();
l.onChange(this);
}
if (this.getAction() != null) {
this.getAction().execute(this);
}
}
private void update() {
ArrayList newSelected = new ArrayList();
Iterator it = this.options.iterator();
for (int i = 0; (i < base.getItemCount()) && it.hasNext(); i++) {
Object item = it.next();
if (this.base.isItemSelected(i)) {
newSelected.add(item);
}
}
ArrayList old = this.selected;
this.selected = newSelected;
changes.firePropertyChange(VALUE_PROPERTY_NAME, old, newSelected);
fireChangeListeners();
}
}