/*
* File : StringListParameter.java
* Created : 18-Nov-2003
* By : parg
*
* Azureus - a Java Bittorrent client
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License.
*
* This program 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 General Public License for more details ( see the LICENSE file ).
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package org.gudy.azureus2.ui.swt.config;
import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.widgets.*;
import org.gudy.azureus2.core3.config.COConfigurationManager;
import org.gudy.azureus2.core3.util.AERunnable;
import org.gudy.azureus2.ui.swt.Utils;
/**
* @author Olivier
*
*/
public class StringListParameter extends Parameter {
Control list;
final String name;
final String default_value;
private final String[] values;
private final boolean useCombo;
/**
*
* @param composite
* @param _name
* @param labels
* @param values
* @param bUseCombo
*/
public StringListParameter(Composite composite, String _name,
String labels[], String values[], boolean bUseCombo) {
this(composite, _name, COConfigurationManager.getStringParameter(_name),
labels, values, bUseCombo);
}
/**
*
* @param composite
* @param _name
* @param labels
* @param values
*/
public StringListParameter(Composite composite, String _name,
String labels[], String values[]) {
this(composite, _name, COConfigurationManager.getStringParameter(_name),
labels, values, true);
}
/**
*
* @param composite
* @param _name
* @param defaultValue
* @param labels
* @param values
*/
public StringListParameter(Composite composite, String _name,
String defaultValue, final String labels[], final String values[]) {
this(composite, _name, defaultValue, labels, values, true);
}
/**
*
* @param composite
* @param _name
* @param defaultValue
* @param labels
* @param values
* @param bUseCombo
*/
public StringListParameter(Composite composite, String _name,
String defaultValue, final String labels[], final String values[],
final boolean bUseCombo) {
super(_name);
this.name = _name;
this.default_value = defaultValue;
this.values = values;
useCombo = bUseCombo;
if(labels.length != values.length) {
return;
}
String value = COConfigurationManager.getStringParameter(name,defaultValue);
int index = findIndex(value,values);
if (bUseCombo) {
list = new Combo(composite,SWT.SINGLE | SWT.READ_ONLY);
} else {
list = new List(composite, SWT.SINGLE | SWT.BORDER | SWT.HORIZONTAL | SWT.VERTICAL) {
// I know what I'm doing. Maybe ;)
public void checkSubclass() {
}
// @see org.eclipse.swt.widgets.Text#computeSize(int, int, boolean)
public Point computeSize(int wHint, int hHint, boolean changed) {
// List widget, at least on Windows, forces the preferred height
if ( hHint == 0 && !isVisible()){
return( new Point( 0, 0 ));
}
Point pt = super.computeSize(wHint, hHint, changed);
if (hHint == SWT.DEFAULT) {
Object ld = getLayoutData();
if (ld instanceof GridData) {
if (((GridData)ld).grabExcessVerticalSpace) {
pt.y = 20;
}
}
}
return pt;
}
};
}
for(int i = 0 ; i < labels.length ;i++) {
if (bUseCombo)
((Combo)list).add(labels[i]);
else
((List)list).add(labels[i]);
}
setIndex(index);
list.addListener(SWT.Selection, new Listener() {
public void handleEvent(Event e) {
int index;
if (bUseCombo)
index = ((Combo)list).getSelectionIndex();
else
index = ((List)list).getSelectionIndex();
setIndex(index);
if( change_listeners != null ) {
for (int i=0;i<change_listeners.size();i++){
((ParameterChangeListener)change_listeners.get(i)).parameterChanged(StringListParameter.this,false);
}
}
}
});
}
private int findIndex(String value,String values[]) {
for(int i = 0 ; i < values.length ;i++) {
if(values[i].equals( value))
return i;
}
return -1;
}
protected void setIndex(final int index) {
if (index < 0) {
COConfigurationManager.removeParameter(name);
String defValue = COConfigurationManager.getStringParameter(name);
int i = findIndex(defValue, values);
if (i >= 0) {
// no recursion, because this area only gets called again if i was < 0
setIndex(i);
} else {
Utils.execSWTThread(new AERunnable() {
public void runSupport() {
if (list == null || list.isDisposed()) {
return;
}
if (useCombo) {
((Combo)list).deselectAll();
} else {
((List)list).deselectAll();
}
}
});
}
return;
}
String selected_value = values[index];
Utils.execSWTThread(new AERunnable() {
public void runSupport() {
if (list == null || list.isDisposed()) {
return;
}
if (useCombo) {
if (((Combo)list).getSelectionIndex() != index) {
((Combo)list).select(index);
}
} else {
if (((List)list).getSelectionIndex() != index) {
((List)list).select(index);
}
}
}
});
if (!COConfigurationManager.getStringParameter(name).equals(selected_value)) {
COConfigurationManager.setParameter(name, selected_value);
}
}
public void setLayoutData(Object layoutData) {
list.setLayoutData(layoutData);
}
public Control getControl() {
return list;
}
public String getValue() {
return COConfigurationManager.getStringParameter( name, default_value );
}
public void setValue(Object value) {
if (value instanceof String) {
String s = (String)value;
setIndex(findIndex(s, values));
}
}
public Object getValueObject() {
return getValue();
}
}