jpopupmenu action listner not working, desperately needed help
I am using jpopupmenu in an APPLET. how to add action listener for this jpopupmenu.
i tried using contentpane(), but it is not working.
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.PrintStream;
import netscape.javascript.JSObject;
import javax.swing.*;
import java.awt.event.*;
public class htmlMenu extends JApplet
implements ActionListener
{
public void init()
{
Container content_pane = getContentPane ();
content_pane.setLayout (new FlowLayout ());
try
{
winLocal = JSObject.getWindow(this);
}
catch(Exception _ex)
{
System.out.println("Error: Applet cannot get window name. \nThis error will throw unhandled exceptions.\nMake sure you have the MAYSCRIPT attribute in your object or applet tag!");
}
paramItemCap_ = getParameter("itemcap");
paramDisableList_ = getParameter("disable");
paramCommonFunction_ = getParameter("commonfunction");
boolMenuEnabled = true;
if(paramItemCap_ != null && paramItemCap_ != "")
intItemCap = Integer.parseInt(paramItemCap_) + 1;
System.out.println("Item Cap Value :" + intItemCap);
mnuMain = new JPopupMenu();
mnuSub = new JMenu[intItemCap];
mnuItem = new JMenuItem[intItemCap];
strAryFunctions = new String[intItemCap];
if(!getNextParam(1))
{
intItemCap = 0;
intLenDisableList = 0;
}
for(x = 1; x < intItemCap; x++)
{
intMaxItemID = x;
intMenuParentID = Integer.parseInt(strMenuData.substring(0, intDLoc1));
strMenuLabel = strMenuData.substring(intDLoc1 + 1, intDLoc2);
strMenuFunction = strMenuData.substring(intDLoc2 + 1);
if(strMenuFunction.length() < 1)
strMenuFunction = paramCommonFunction_;
if(strMenuLabel.equals("-"))
buildSeparator(intMenuParentID);
else
if(strMenuFunction.equals("none") || strMenuFunction.equals("submenu"))
{
mnuSub[x] = new JMenu(strMenuLabel);
mnuSub[x].addActionListener(this);
if(intMenuParentID == 0)
mnuMain.add(mnuSub[x]);
else
mnuSub[intMenuParentID].add(mnuSub[x]);
} else
if(strMenuFunction.equals("url"))
{
menuURL = getParameter("url" + x);
dlLoc = menuURL.indexOf("|");
if(dlLoc != -1)
{
strTemp = menuURL.substring(dlLoc + 1);
menuURL = menuURL.substring(0, dlLoc);
if(strTemp.equals("_top"))
{
strPre = "top.location.href='";
strPost = "';";
} else
if(strTemp.equals("_new"))
{
strPre = "window.open('";
strPost = "','NewWindow');";
} else
{
strPre = "top." + strTemp + ".location.href='";
strPost = "';";
}
} else
{
strPre = "location.href=";
strPost = "';";
}
strAryFunctions[x] = strMenuFunction;
mnuItem[x] = new JMenuItem(strMenuLabel);
mnuItem[x].setActionCommand(strPre + menuURL + strPost);
if(intMenuParentID == 0)
mnuMain.add(mnuItem[x]);
else
mnuSub[intMenuParentID].add(mnuItem[x]);
} else
{
strAryFunctions[x] = strMenuFunction;
mnuItem[x] = new JMenuItem(strMenuLabel);
mnuItem[x].setActionCommand(strMenuFunction);
if(intMenuParentID == 0)
mnuMain.add(mnuItem[x]);
else
mnuSub[intMenuParentID].add(mnuItem[x]);
}
if(!getNextParam(x + 1))
x = intItemCap;
}
content_pane.add(mnuMain);
if(paramDisableList_ != null && paramDisableList_.length() > 0)
{
paramDisableList_ += ",";
strItemID = "0";
intLenDisableList = paramDisableList_.length();
for(x = 0; x <= intLenDisableList - 1; x++)
{
intChar = paramDisableList_.charAt(x);
if(intChar != 44)
strItemID += (char)intChar;
else
try
{
intItemID = Integer.parseInt(strItemID);
if(intItemID <= intMaxItemID)
setItemEnabled(intItemID, false);
strItemID = "0";
}
catch(NumberFormatException _ex)
{
strItemID = strItemID;
getAppletContext().showStatus("Invalid Disable Parameter");
}
}
}
}
private void setItemEnabled(int intItemID_, boolean boolEnabled_)
{
mnuItem[intItemID_].setEnabled(boolEnabled_);
}
private void buildSeparator(int parentID_)
{
if(parentID_ == 0)
mnuMain.addSeparator();
else
mnuSub[menuItemParent].addSeparator();
}
private boolean getNextParam(int x_)
{
strMenuData = getParameter("item" + x_);
if(strMenuData == null)
return false;
intDLoc1 = strMenuData.indexOf("|");
if(intDLoc1 == -1)
return false;
intDLoc2 = strMenuData.lastIndexOf("|");
if(intDLoc2 == intDLoc1)
{
strMenuData += "|";
intDLoc2 = strMenuData.length() - 1;
}
return true;
}
public String getAppletInfo()
{
return "htmlMenu Java Applet\nComputer Task Group, Inc.\nCopyright 1999";
}
public void setMenuEnabled(boolean state_)
{
boolMenuEnabled = state_;
}
public void actionPerformed(ActionEvent e_)
{
String strCommand = e_.getActionCommand();
String strArguments[] = {
strCommand
};
if(strCommand == null || strCommand.length() < 1)
try
{
winLocal.eval("alert('The page author has failed to supply an appropriate action for this menu item')");
}
catch(Exception _ex)
{
getAppletContext().showStatus("Error accessing function or window");
}
else
winLocal.eval(strCommand);
}
public void showMenu(int intX_, int intY_)
{
if(boolMenuEnabled)
mnuMain.show(this, intX_, intY_);
}
public htmlMenu()
{
intItemCap = 100;
}
JSObject winLocal;
JPopupMenu mnuMain;
JMenuItem mnuItem[];
JMenu mnuSub[];
int intItemID;
int intMaxItemID;
int intMenuParentID;
int intLenDisableList;
int intDLoc1;
int dlLoc;
int intDLoc2;
int menuItemParent;
int intItemCap;
int intChosenItem;
int intChar;
int x;
boolean boolMenuEnabled;
String menuURL;
String strTemp;
String strPre;
String strPost;
String strAryFunctions[];
String strMenuLabel;
String strMenuFunction;
String strMenuData;
String strItemID;
String paramDisableList_;
String paramItemCap_;
String paramCommonFunction_;
}
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