home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Freesoft 1997 May
/
Freesoft_1997-05_cd.bin
/
recenz
/
PROGRAM
/
JAVADRAW
/
iavadraw301_inst.exe
/
data.z
/
ListDemo.java
< prev
next >
Wrap
Text File
|
1997-05-20
|
4KB
|
109 lines
/*
* Copyright (c) 1995, 1996 Sun Microsystems, Inc. All Rights Reserved.
*
* Permission to use, copy, modify, and distribute this software
* and its documentation for NON-COMMERCIAL purposes and without
* fee is hereby granted provided that this copyright notice
* appears in all copies. Please refer to the file "copyright.html"
* for further important copyright and licensing information.
*
* SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF
* THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
* TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR
* ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
* DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
*/
import java.awt.*;
import java.applet.Applet;
public class ListDemo extends Applet {
TextArea output;
List spanish, italian;
public void init() {
//Build first list, which allows multiple selections.
spanish = new List(4, true); //prefer 4 items visible
spanish.addItem("uno");
spanish.addItem("dos");
spanish.addItem("tres");
spanish.addItem("cuatro");
spanish.addItem("cinco");
spanish.addItem("seis");
spanish.addItem("siete");
//Build second list, which allows one selection at a time.
italian = new List(); //Defaults to none visible, only one selectable
italian.addItem("uno");
italian.addItem("due");
italian.addItem("tre");
italian.addItem("quattro");
italian.addItem("cinque");
italian.addItem("sei");
italian.addItem("sette");
//Add lists to the Applet.
GridBagLayout gridBag = new GridBagLayout();
setLayout(gridBag);
//Can't put text area on right due to GBL bug
//(can't span rows in any column but the first).
output = new TextArea(10, 40);
output.setEditable(false);
GridBagConstraints tc = new GridBagConstraints();
tc.fill = GridBagConstraints.BOTH;
tc.weightx = 1.0;
tc.weighty = 1.0;
tc.gridheight = 2;
gridBag.setConstraints(output, tc);
add(output);
GridBagConstraints lc = new GridBagConstraints();
lc.fill = GridBagConstraints.VERTICAL;
lc.gridwidth = GridBagConstraints.REMAINDER; //end row
gridBag.setConstraints(spanish, lc);
add(spanish);
gridBag.setConstraints(italian, lc);
add(italian);
validate();
}
public boolean action(Event e, Object arg) {
if (e.target instanceof List) {
String language = (e.target == spanish) ?
"Spanish" : "Italian";
output.appendText("Action event occurred on \""
+ (String)arg + "\" in "
+ language + ".\n");
}
return true;
}
public boolean handleEvent(Event e) {
if (e.target instanceof List) {
List list = (List)(e.target);
String language = (list == spanish) ?
"Spanish" : "Italian";
switch (e.id) {
case Event.LIST_SELECT:
int sIndex = ((Integer)e.arg).intValue();
output.appendText("Select event occurred on item #"
+ sIndex + " (\""
+ list.getItem(sIndex) + "\") in "
+ language + ".\n");
break;
case Event.LIST_DESELECT:
int dIndex = ((Integer)e.arg).intValue();
output.appendText("Deselect event occurred on item #"
+ dIndex + " (\""
+ list.getItem(dIndex) + "\") in "
+ language + ".\n");
}
}
return super.handleEvent(e);
}
}