Tooltip Popup Event handling

VB.NET - VS2012 - I want to create a common event handler for all ToolTip1 popup events.
In the handler, I want to interrogate which control caused the event and display documentation text related to that control.
I think the following is what I need to process a popup event
Private Sub ToolTip1_Popup(ByVal sender As Object, ByVal e As PopupEventArgs) Handles _
ToolTip1.Popup
However, I can't figure out how to comply with the "WithEvents" requirement in the following error message:
"Handles clause requires a WithEvents variable defined in the containing type or one of its base types"
ftbrady

Ali,
With a menu item, the approach that you want to take is to add an ActionListener to the menu item. When a menu item (either in the main menu or popup menu) is clicked, the item fires off an ActionEvent to the "actionPerformed(ActionEvent e)" method of the registered ActionListener's.
Sun has a good little set of menu examples online at:
http://java.sun.com/docs/books/tutorial/uiswing/components/menu.html
Take Care,
Rob
null

Similar Messages

The reflection answer to event handling?

I have been playing with reflection answers to the question of how to handle ActionEvent events in Swing... like using a single instance of one member class as a reflection switch:
private class Listener implements ActionListener {
     public void actionPerformed (ActionEvent action) {
          try {this.getClass().getMethod(action.getActionCommand(), new Class[0]).invoke(this, new Object[0]);}
          catch(Exception exception) {/* error handling code */}
     public void one() {/* do something */}
     public void two() {/* do something */}
}No more hideous if/then structures and only one inner class. Just match the method names to the action commands and the two line switch handles everything. Much cleaner code and directories.
I wrote a small example program that you can get the source for here:
http://www.immortalcoil.org/drake/SmartFrameExample.java
I can think of only two reasons not to do this right now:
1) Event / listener mismatches you would have caught at compile time before (if using inner classes) become runtime errors, or if you improve upon the above with Class.getMethods() then dead actions (as with a classic switch).
2) Inability to look yourself in the mirror or partake of Jesus's love.
Still, the result is much prettier code and as long as you code it right it will work flawlessly. I am honestly considering using this.
Thoughts?

For simple GUIs with very few actions, your approach is obviously overkill. You want to preserve simplicity whenever possible without affecting performance.
For mildly complex GUIs, I think your approach is good, but still doesn't solve the bigger problem of managing multiple components that use the same action. If you've got so many actions that you need reflection to reduce code, you probably have a GUI with menubars, toolbars, popup menus, and buttons that all perform the same set of actions. Now you have to register an ActionListener with each component, not to mention disabling an action, which involves finding every menu item and button corresponding to this action and disabling/enabling it. I realize this is a different problem than you were trying to solve, but it's worth considering.
Well, Swing provides javax.swing.Action to handle just this problem, which more or less alleviates the need for your approach because you have an Action subclass for each action. But maybe the best solution for very complex GUIs is a combination of your approach with the Action approach by providing an ActionSet class, which centralizes event handling for all components. The ActionSet class would define for each action:
1) a static String for the action command
2) a static String for the tooltip
3) a static Icon for the icon
Now, when a new ActionSet is created, it uses reflection to read each of it's fields, creating a new Action subclass for that action and storing it in a HashMap using the action command for the key. The Action subclass just handles the event by forwarding it to a registered ActionListener on the ActionSet class. The ActionListener would implement your approach for reflection event-handling, thereby eliminating if/else/switch clauses.
The GUI code can call a method "getAction(String actionCommand)" on the ActionSet to retrieve the Action subclass when creating the JMenuBar, JButton, JToolBar, JPopupMenu, etc. Then at any time in the application, you can call ActionSet.getAction(...).setEnabled(...) to enable/disable all components using that action.

Event handling in LOV

Hi There,
We have a use-case where we need intercept the event of af:inputComboboxListOfValues component.
I have table, which has three columns, Name, Description and Label.
I have a LOV on Name column.
When user change the value of Name column by selecting an value from dropdown, I need to do business validation, I show user the "Yes/No" popup with warning message, and base on the user's choice, either proceed with the change or stop the change.
My problem is that I am unable to find a appropriate event to show the popup.
I know there are several events in the af:inputComboboxListOfValues component, launchPopupEvent, returnPopupEvent and valueChangeEvent.
1. If I show popup on launchPopupEvent, after the user click "Yes/No" button on the popup, the page will be refreshed and dropdwon doesn't show the item list.
2. returnPopupEvent and valueChangeEvent event will be handled by framework in one request, there is no chance for user's interaction.
I am not familiar with ADF event handling machenism, can anyone help me?
Thanks in advance.
Thunder
Edited by: 984466 on 2013-3-7 下午4:59
Edited by: 984466 on 2013-3-8 上午12:51

Hi,
first of all, never post questions regarding internal JDeveloper builds (11.1.1.7 is not released to public) on this public forum. You are from Oracle and therefore have internal channels for this (note that using internal builds the problem could be with the build and not necessarily the code alone).
To your question:
I don't understand why
+"2. returnPopupEvent and valueChangeEvent event will be handled by framework in one request, there is no chance for user's interaction."+
doesn't work. If you set the "name" column component to autosubmit="true" then the listener fires as soon as you move out of the field and you can raise the alert. The current row in the binding points to the row you changed the name for and as such the value can be unset (the value change listener shows you the before and after value)
Frank

Bug: RichTextEditor "Initialize" not classed as event handler

I'm trying to load the RichTextEditor control in a popup window. Here's my code:
var rte:RichTextEditor = new RichTextEditor();
rte.width = 600;
rte.height = 500;
rte.title = 'Edit Text';
I need to add the initialize event handler so I can add a button to the toolbar (as per the example on the Adobe website).
However, when I type:
rte.initialize = "addSaveButton()";
Flash Builder says this is invalid as "initialize" is actually a function and doesn't accept any parameters.
Compare this with:
<mx:RichTextEditor initialize="addSaveButton()"/>
Flash Builder recongises "initialize" as an event handler and therefore accepts the addSaveButton() function.
Can anyone else confirm whether this is a bug with the SDK or not? I can simply add the button outside of the RTE for now, but then I'd have to wrap the RTE in a separate panel to accomodate the button, which isn't ideal.
Thanks in advance.

Hi,
this is how to add the event listener
rte.addEventListener(FlexEvent.INITIALIZE,addSaveButton);
David.

Event handler elements inside of the array

I have an array of clusters, of which inside the cluster are buttons. I want to be able to tie an event handler to these buttons ( they would all handle the event the same, the only difference would be the index they were handling)
A while back a similiar problem was posted here:
http://forums.ni.com/t5/LabVIEW/Array-of-Clusters-with-Graph-Y-Scale-Change-Event/td-p/1194181/page/...
However, this solution did not appear to be able to deliver the index of which button in the array was pressed .. this is critical for my application. The button is basically an "edit' buttonw which allows the user to edit the elements of the cluster through a popup. Obviously I need to know which cluster the user intends to edit.

nathand wrote:
One option: when the code starts, build an array of references to the edit buttons inside each cluster. Then, in the event case, search that array for the reference that triggered the event. The index at which the reference is found tells you which cluster to edit.
This might work, but it should be possible for the user to add/delete elements from the array so I would need to be able to do this even after program initialization.
Currently, I have just made dozen buttons alongside the array of clusters. But this workaround won't allow past a fixed number at program initialization.

Event handler for dropdownlistbox how to determine selection ?

Hello,
As a newby in BSP programming, I'm trying to build a small application with a menu structure . This menu is defined in a page fragment and consists of dropdownlistboxes. The event handling is located in the main page which contains the page fragment.
My problem is that I cannot get these dropdownlist boxes to work. The coding in the page fragment is :
==========================
<htmlb:content>
<htmlb:form>
    <htmlb:dropdownListBox id             = "myDropdownListBox1"
                             tooltip        = "Tooltip for my DropdownListBox"
                             onClientSelect = "alert('myDropdownListBox1')"
                             onSelect       = "mySelect" >
        <htmlb:listBoxItem key   = "k1"
                           value = "MenuChoice1" />
        <htmlb:listBoxItem key   = "k2"
                           value = "MenuChoice2" />
        <htmlb:listBoxItem key   = "k3"
                           value = "MenuChoice3" />
        <htmlb:listBoxItem key   = "k4"
                           value = "MenuChoice4" />
        <htmlb:listBoxItem key   = "k5"
                           value = "MenuChoice5" />
        <htmlb:listBoxItem key   = "k6"
                           value = "MenuChoice6" />
      </htmlb:dropdownListBox>
    </htmlb:form>
</htmlb:content>
==========================
The event handler ( OnInputProcessing ) code is :
==========================
CLASS CL_HTMLB_MANAGER DEFINITION LOAD.
DATA: event TYPE REF TO if_htmlb_data,
        ddlb_event TYPE REF TO CL_HTMLB_EVENT_SELECTION.
event = CL_HTMLB_MANAGER=>get_event( runtime->server->request ).
IF event IS NOT INITIAL AND event->event_name =
             'dropdownListBox'.
      ddlb_event ?= event.
    CASE event->event_id.
      WHEN 'myDropdownListBox1'.
        CASE ddlb_event->selection.
       WHEN 'k1'.
        .......( Contains other statements )
       WHEN 'k2'.
        .......( Contains other statements )
       WHEN 'k3'.
        .......( Contains other statements )
       WHEN 'k4'.
        .......( Contains other statements )
       WHEN 'k5'.
        .......( Contains other statements )
       WHEN 'k6'.
        .......( Contains other statements )
     ENDCASE.
    ENDCASE.
    ENDIF.
==========================
I have tried several different event handlers including the example in the documentation of the dropdownlistbox HTMLB element, but in the event handler I don't know how to determine the selection made.
I would appreciate it hugely if someone could give me an example how to do this ?
With regards,
Fred van de Langenberg

Hello,
Thanks for your answers & suggestions Subramanian, Ulli & Sebastian.
I forgot the <htmlb:content> tags ( thanks Ulli ) and eventually I got things working with the following :
Main page layout : dopdownlistbox element
   <htmlb:dropdownListBox
            id          = "Ddlb1"
            onSelect    = "OnInputProcessing" >
            selection   = "<%= selection1 %>"
        <htmlb:listBoxItem key   = " "
                           value = " "/>
        <htmlb:listBoxItem key   = "k1"
                           value = "k1" />
        <htmlb:listBoxItem key   = "k2"
                           value = "k2" />
        <htmlb:listBoxItem key   = "k3"
                           value = "k3" />
        <htmlb:listBoxItem key   = "k4"
                           value = "k4" />
        <htmlb:listBoxItem key   = "k5"
                           value = "k5" />
      </htmlb:dropdownListBox>
Event handler
CLASS CL_HTMLB_MANAGER DEFINITION LOAD.
IF event_id = CL_HTMLB_MANAGER=>EVENT_ID.
Scenario 1: Read event from manager.
DATA: event TYPE REF TO CL_HTMLB_EVENT.
event = CL_HTMLB_MANAGER=>get_event( runtime->server->request ).
IF event IS NOT INITIAL AND event->name = 'dropdownListBox'.
    DATA: data TYPE REF TO CL_HTMLB_DROPDOWNLISTBOX.
    data ?= CL_HTMLB_MANAGER=>GET_DATA(
              request = runtime->server->request
              name    = 'dropdownListBox'
              id      = 'Ddlb1'
     CASE data->selection.
       WHEN 'k1'.
       WHEN 'k2'.
       WHEN 'k3'.
       WHEN 'k4'.
       WHEN 'k5'.
     ENDCASE.
   ENDIF.
ENDIF.
Fred van de Langenberg

Htp.p doesn't work from the custom button event handler ...

Hi,
I am trying to pop up an alert from the custom button event handler. I created a button and put the following code.
htp.p('<script language='JavaScript1.3">
alert ("Test Message");
</script>;
But alter doesn't show up after clicking the button.
Thanks

OK i've attached them and copy/pasted the relevent parts. The parent window is the SFLB file.
-----------------------------------------here's the code in the parent window
private function editServerPool():
void
serverPoolPUW = PopUpManager.createPopUp(
this,popups.ServerPoolPopup,true);PopUpManager.centerPopUp(serverPoolPUW
as IFlexDisplayObject);
if (newServerPool.SecondarySPAlgorithm != null){
serverPoolPUW.enableSSCheckBox.selected =true;serverPoolPUW.DisplaySecondaryServerPool();
serverPoolPUW.bigResize.play();// serverPoolPUW.height = 602; //yes...i know i need to move thisserverPoolPUW.switchoverPolicyCB.selectedItem = newServerPool.SwitchOverPolicy;
serverPoolPUW.switchoverThresholdTI.text = newServerPool.SwitchOverThreshold;
----------------------here's the code in teh popup window (popups.ServerPoolPopup.mxml)
<mx:Resize id = "bigResize" heightFrom="506" heightTo="602" target="{this}" />
<mx:Resize id = "littleResize" heightFrom="602" heightTo="506" target="{this}"/>
public function DisplaySecondaryServerPool():void{
//make the screen large if the secondary server checkbox is selected; otherwise small.
if (enableSSCheckBox.selected){
//display secondary server pool tab, expand the screen
//note that we cannot attach a data provider to the data grid until the grid creation is
//completed. This is done in an event handler.secondaryPanel.enabled =
true; switchoverPolicyCB.visible =
true;switchoverThresholdTI.visible =
true;thresholdFI.visible =
true;policyFI.visible =
true;bigResize.play();
else
<mx:CheckBox label="Enable a Secondary Server Pool" width="264" fontWeight="bold" click="DisplaySecondaryServerPool()" id="
enableSSCheckBox" fontSize="12" x="83" y="40"/>

How can I execute an external program from within a button's event handler?

I am using Tomcat ApacheTomcat 6.0.16 with Netbeans 6.1 (with the latest JDK/J2EE)
I need to execute external programs from an event handler for a button on a JSF page (the program is compiled, and extremely fast compared both to plain java and especially stored procedures written in SQL).
I tried what I'd do in a standalone program (as shown in the appended code), but it didn't work. Instead I received text saying the program couldn't be found. This error message comes even if I try the Windows command "dir". I thought with 'dir' I'd at least get the contents of the current working directory. :-(
I can probably get by with cgi on Apache's httpd server (or, I understand tomcat supports cgi, but I have yet to get that to work either), but whatever I do I need to be able to do it from within the button's event handler. And if I resort to cgi, I must be able to maintain session jumping from one server to the other and back.
So, then, how can I do this?
Thanks
Ted
NB: The programs that I need to run do NOT take input from the user. Rather, my code in the web application processes user selections from selection controls, and a couple field controls, sanitizes the inoputs and places clean, safe data in a MySQL database, and then the external program I need to run gets safe data from the database, does some heavy duty number crunching, and puts the output data into the database. They are well insulated from mischeif.
NB: In the following array_function_test.pl was placed in the same folder as the web application's jsp pages, (and I'd tried WEB-INF - with the same result), and I DID see the file in the application's war file.
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            java.lang.Process pr = pn.start();
            java.io.BufferedInputStream bis = (java.io.BufferedInputStream)pr.getInputStream();
            String tmp = new String("");
            byte b[] = new byte[1000];
            int i = 0;
            while (i != -1) {
                bis.read(b);
                tmp += new String(b);
            getSelectionsDisplayTextArea().setText(getSelectionsDisplayTextArea().getText() + "\n\n" + tmp);
        } catch (java.io.IOException ex) {
            getSelectionsDisplayTextArea().setText(getSelectionsDisplayTextArea().getText() + "\n\n" + ex.getMessage());
        }

Hi Fonsi!
One way to execute an external program is to use the System Exec.vi. You find it in the functions pallet under Communication.
/Thomas

Copying text to the clipboard in AVDocDidOpen event handler causes Acrobat 9 to crash

I'm trying to copy the filename of a document to the clipboard in a plugin with my AVDocDidOpen event handler. It works for the first file opened; however when a second file is opened, Acrobat crashes. The description in the application event log is: "Faulting application acrobat.exe, version 9.1.0.163, faulting module gdi32.dll, version 5.1.2600.5698, fault address 0x000074cc."
I've confirmed that the specific WIN32 function that causes this to happen is SetClipboardData(CF_TEXT, hText); When that line is commented out and remaining code is left unchanged, Adobe doesn't crash.
Is there an SDK function that I should be using instead of WIN32's SetClipboardData()? Alternately, are there other SDK functions that I need to call be before or after I call SetClipboardData()
Bill Erickson

Leonard,
I tried it with both "DURING, HANDLER, END_HANDLER" and "try catch," as shown below. However, it doesn't crash in the event handler; it crashes later, so the HANDLER/catch block is never hit.
The string that's passed to SetClipboardData() is good, because I'm able to paste it into the filename text box of the print dialog when I try to create the "connector line" PDF. I also got rid of all the string manipulation and tried to pass a zero-length string to the clipboard but it still crashes.
Here's the code:
ACCB1 void ACCB2 CFkDisposition::myAVDocDidOpenCallback(AVDoc doc, Int32 error, void *clientData)
    PDDoc pdDoc = AVDocGetPDDoc(doc);
    char* pURL = ASFileGetURL(PDDocGetFile(annotDataRec->thePDDoc));
    if (pURL)    {
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            strcpy(myURL, pURL);
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            pURL = NULL;
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                try
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                    char *pText = (char *)GlobalLock(hText);
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                        strcpy(pText, pWork+1);
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                        strcpy(pText, myURL);
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                    pWork = strstr(pText, "%20");
                    while (pWork)    {
                        *pWork = ' ';
                        memmove(pWork+1, pWork+3, (pEnd - (pWork+2)));
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                    pWork = strstr(pText, ".pdf");
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                    OpenClipboard(NULL);
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                    SetClipboardData(CF_TEXT, hText);     // Here's the culprit
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                } catch (char * str) {
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        if (pURL)
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Unable to get automatic event handling for OK button.

Hello,
I have created a form using creatobject. This form contains an edit control and Search, Cancel buttons. I have set the Search buttons UID to "1" so it can handle the Enter key hit event. Instead its caption changes to Update when i start typing in the edit control and it does not respond to the Enter key hit. Cancel happens when Esc is hit.
My code looks like this -
Dim oCreationParams As SAPbouiCOM.FormCreationParams
        oCreationParams = SBO_Application.CreateObject(SAPbouiCOM.BoCreatableObjectType.cot_FormCreationParams)
        oCreationParams.UniqueID = "MySearchForm"
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                Dim oForm As SAPbouiCOM.Form = SBO_Application.Forms.AddEx(oCreationParams)
oForm.Visible = True
'// set the form properties
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        oForm.ClientWidth = 500
        oForm.Top = 100
        oForm.ClientHeight = 240
        '// Adding Items to the form
        '// and setting their properties
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oItem = oForm.Items.Add("NUM", SAPbouiCOM.BoFormItemTypes.it_EDIT)
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        oItem.Top = 20
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What changes do i have to make to get the enter key to work?
Thanks for your help.
Regards,
Sheetal

Hello Felipe,
Thanks for pointing me to the correct direction.
So on refering to the documentation i tried out a few things. But I am still missing something here.
I made the following changes to my code -
oForm.AutoManaged = True
oForm.SupportedModes = 1 ' afm_Ok
oItem = oForm.Items.Add("1", SAPbouiCOM.BoFormItemTypes.it_BUTTON)
        oItem.Left = 5
        oItem.Width = 65
        oItem.Top = oForm.ClientHeight - 30
        oItem.Height = 19
oItem.SetAutoManagedAttribute(SAPbouiCOM.BoAutoManagedAttr.ama_Visible, 1, SAPbouiCOM.BoModeVisualBehavior.mvb_Default)
        oButton = oItem.Specific
        oButton.Caption = "OK"
AND
oForm.Mode = SAPbouiCOM.BoFormMode.fm_OK_MODE
oItem = oForm.Items.Add("1", SAPbouiCOM.BoFormItemTypes.it_BUTTON)
        oItem.Left = 5
        oItem.Width = 65
        oItem.Top = oForm.ClientHeight - 30
        oItem.Height = 19
oItem.AffectsFormMode = False
I get the same behaviour OK button changes to update and enter key does not work.
Could you please tell me find what is it that i am doing wrong?
Regards,
Sheetal

Dropdown box - which event handler to use ?

I am having trouble with setting the readonly property (via Javascript) of the adjacent textbox to my dropdown box when the index value is a certain number.
I tried using MouseUp, MouseDown, and even OnBlur....but the readonly does not seem to be getting set to true or false consistently.
Could this be a timing issue ? The textbox that I am trying to control is the next tab-order control in the list of controls for this page.
This same logic is working fine in the MouseUp event handler for check boxes. So I am just wondering if this is a bug or must my implementation change to accomodate dropdown boxes ? For instance, should I move the logic to the Enter event handler of the textbox instead ? Can a control's own eventhandler set itself to readonly when it is the active form field ?

After tons and tons of testing time, I've come to the conclusion that dropdowns are totally buggy in 11.0.07 release of Acrobat Pro.
Even if you set the "commit values immediately", you get the PRIOR selected item's value as the event value, not the CURRENT one.
This occurs in a Validate event handler script. I have not been able to use any other event handlers for a dropdown except the OnBlur....and then, for my purposes, IT'S TOO LATE !!!
This is totally worthless as I need to setFocus() and set fields to readonly based on the immediate dropdown offset or face value.

Input value given on web page is not getting pickedup in event handler

Hi friends,
I have created one simple page in SE80 with program with flow logic option, in which I would like to show business partner details from BUT000 table with the input of partner number. But the thing is the input value(partner no.)which I am giving on web page is not getting picked up in selection in event handler though I am giving input value it is becoming initial while selecting. What could be the reason?
Below I am mentioning the code which I have written in even handler for OnInputProcessing event.
CASE EVENT_ID.
WHEN 'select'.
NAVIGATION->SET_PARAMETER( 'partner' ).
SELECT * FROM but000 INTO TABLE I_but000 WHERE partner BETWEEN partner AND partner1.
WHEN OTHERS.
ENDCASE.
Thanks in advance,
Steve

Hi Abhinav,
I tried with the one you posted. But it is giving run time error as shown below.
Note
The following error text was processed in the system CRD : Access via 'NULL' object reference not possible.
The error occurred on the application server crmdev_CRD_00 and in the work process 0 .
The termination type was: RABAX_STATE
The ABAP call stack was:
Method: ONINPUTPROCESSING of program CLO24DDFJW575HVAQVJ89KWHEHC9OCP
Method: %_ONINPUTPROCESSING of program CL_O24DDFJW575HVAQVJ89KWHEHC9OCP
Method: DO_REQUEST of program CL_BSP_PAGE===================CP
Method: ON_REQUEST of program CL_BSP_RUNTIME================CP
Method: IF_HTTP_EXTENSION~HANDLE_REQUEST of program CL_HTTP_EXT_BSP===============CP
Method: EXECUTE_REQUEST_FROM_MEMORY of program CL_HTTP_SERVER================CP
Function: HTTP_DISPATCH_REQUEST of program SAPLHTTP_RUNTIME
Module: %_HTTP_START of program SAPMHTTP
Regards,
Steve

How do I create an Event Handler for an Execute SQL Task in SSIS if its result set is empty

So the precedence on my entire package executing is based on my first SELECT of my Table and an updatable column. If that SELECT results in an empty result set, how do I create an Event Handler to handle an empty result set?
A Newbie to SSIS.
I appreciate your review and am hopeful for a reply.
PSULionRP

Depends upon what you want to do in the eventhandler. this is what you can do
Store the result set from the Select to a user variable.
Pass this user variable to a Script task.
In the Script task do whatever you want to do including failing the package this can be done by failing the script task, which in turns fails the package. something like
Dts.TaskResult = Dts.Results.Failure
Abhinav http://bishtabhinav.wordpress.com/

Swing: when trying to get the values from a JTable inside an event handler

Hi,
I am trying to write a graphical interface to compute the Gauss Elimination procedure for solving linear systems. The class for computing the output of a linear system already works fine on console mode, but I am fighting a little bit to make it work with Swing.
I put two buttons (plus labels) and a JTextField . The buttons have the following role:
One of them gets the value from the JTextField and it will be used to the system dimension. The other should compute the solution. I also added a JTable so that the user can type the values in the screen.
So whenever the user hits the button Dimensiona the program should retrieve the values from the table cells and pass them to a 2D Array. However, the program throws a NullPointerException when I try to
do it. I have put the code for copying this Matrix inside a method and I call it from the inner class event handler.
I would thank you very much for the help.
Daniel V. Gomes
here goes the code:
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import AdvanceMath.*;
public class MathF2 extends JFrame {
private JTextField ArrayOfFields[];
private JTextField DimOfSis;
private JButton Calcular;
private JButton Ativar;
private JLabel label1;
private JLabel label2;
private Container container;
private int value;
private JTable DataTable;
private double[][] A;
private double[] B;
private boolean dimensionado = false;
private boolean podecalc = false;
public MathF2 (){
super("Math Calcs");
Container container = getContentPane();
container.setLayout( new FlowLayout(FlowLayout.CENTER) );
Calcular = new JButton("Resolver");
Calcular.setEnabled(false);
Ativar = new JButton("Dimensionar");
label1 = new JLabel("Clique no bot�o para resolver o sistema.");
label2 = new JLabel("Qual a ordem do sistema?");
DimOfSis = new JTextField(4);
DimOfSis.setText("0");
JTable DataTable = new JTable(10,10);
container.add(label2);
container.add(DimOfSis);
container.add(Ativar);
container.add(label1);
container.add(Calcular);
container.add(DataTable);
for ( int i = 0; i < 10 ; i ++ ){
for ( int j = 0 ; j < 10 ; j++) {
DataTable.setValueAt("0",i,j);
myHandler handler = new myHandler();
Calcular.addActionListener(handler);
Ativar.addActionListener(handler);
setSize( 500 , 500 );
setVisible( true );
public static void main ( String args[] ){
MathF2 application = new MathF2();
application.addWindowListener(
new WindowAdapter(){
public void windowClosing (WindowEvent event)
System.exit( 0 );
private class myHandler implements ActionListener {
public void actionPerformed ( ActionEvent event ){
if ( event.getSource()== Calcular ) {
if ( event.getSource()== Ativar ) {
//dimensiona a Matriz A
if (dimensionado == false) {
if (DimOfSis.getText()=="0") {
value = 2;
} else {
value = Integer.parseInt(DimOfSis.getText());
dimensionado = true;
Ativar.setEnabled(false);
System.out.println(value);
} else {
Ativar.setEnabled(false);
Calcular.setEnabled(true);
podecalc = true;
try {
InitValores( DataTable, value );
} catch (Exception e) {
System.out.println("Erro ao criar matriz" + e );
private class myHandler2 implements ItemListener {
public void itemStateChanged( ItemEvent event ){
private void InitValores( JTable table, int n ) {
A = new double[n][n];
B = new double[n];
javax.swing.table.TableModel model = table.getModel();
for ( int i = 0 ; i < n ; i++ ){
for (int j = 0 ; j < n ; j++ ){
Object temp1 = model.getValueAt(i,j);
String temp2 = String.valueOf(temp1);
A[i][j] = Double.parseDouble(temp2);

What I did is set up a :
// This code will setup a listener for the table to handle a selection
players.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
ListSelectionModel rowSM = players.getSelectionModel();
rowSM.addListSelectionListener(new Delete_Player_row_Selection(this));
//Class will take the event and call a method inside the Delete_Player object.
class Delete_Player_row_Selection
implements javax.swing.event.ListSelectionListener
Delete_Player adaptee;
Delete_Player_row_Selection (Delete_Player temp)
adaptee = temp;
public void valueChanged (ListSelectionEvent listSelectionEvent)
adaptee.row_Selection(listSelectionEvent);
in the row_Selection function
if(ex.getValueIsAdjusting()) //To remove double selection
return;
ListSelectionModel lsm = (ListSelectionModel) ex.getSource();
if(lsm.isSelectionEmpty())
System.out.println("EMtpy");
else
int selected_row = lsm.getMinSelectionIndex();
ResultSetTableModel model = (ResultSetTableModel) players.getModel();
String name = (String) model.getValueAt(selected_row, 1);
Integer id = (Integer) model.getValueAt(selected_row, 3);
This is how I got info out of a table when the user selected it

Problem with event handling

Hello all,
I have a problem with event handling. I have two buttons in my GUI application with the same name.They are instance variables of two different objects of the same class and are put together in the one GUI.And their actionlisteners are registered with the same GUI. How can I differentiate between these two buttons?
To be more eloborate here is a basic definition of my classes
class SystemPanel{
         SystemPanel(FTP ftp){ app = ftp};
         FTP app;
         private JButton b = new JButton("ChgDir");
        b.addActionListener(app);
class FTP extends JFrame implements ActionListener{
           SystemPanel rem = new SystemPanel(this);
           SystemPanel loc = new SystemPanel(this);
           FTP(){
                   add(rem);
                   add(loc);
                   pack();
                   show();
       void actionPerformed(ActionEvent evt){
        /*HOW WILL I BE ABLE TO KNOW WHICH BUTTON WAS PRESSED AS THEY
           BOTH HAVE SAME ID AND getSouce() ?
           In this case..it if was from rem or loc ?
} It would be really helpful if anyone could help me in this regard..
Thanks
Hari Vigensh

Hi levi,
Thankx..
I solved the problem ..using same concept but in a different way..
One thing i wanted to make clear is that the two buttons are in the SAME CLASS and i am forming 2 different objects of the SAME class and then putting them in a GUI.THERE IS NO b and C. there is just two instances of b which belong to the SAME CLASS..
So the code
private JButton b = new JButton("ChgDir");
b.setActionCommand ("1");
wont work as both the instances would have the label "ChgDir" and have setActionCommand set to 1!!!!
Actually I have an array of buttons..So I solved the prob by writting a function caled setActionCmdRemote that would just set the action commands of one object of the class differently ..here is the code
public void setActionCommandsRemote()
     for(int i = 0 ; i <cmdButtons.length ; i++)
     cmdButtons.setActionCommand((cmdButtons[i].getText())+"Rem");
This just adds "rem" to the existing Actioncommand and i check it as folows in my actionperformed method
     if(button.getActionCommand().equals("DeleteRem") )
                    deleteFileRemote();
      else if(button.getActionCommand().equals("Delete") )
                 deleteFileLocal();Anyway thanx a milion for your help..this was my first posting and I was glad to get a prompt reply!!!

Tooltip Popup Event handling

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