Button Scope
Hi,
I'm having a slight problem with a dynamically generated
button in flash. The problem is that the movie clips that contains
the button is nested within several other movie clips. I am
assuming this is why when i run the flash document, the movie clip
plays and all the buttons are generated as usual, but none of them
seem to be active (cant click them or get the rollover code to
run). Is this a scope issue? Do i need a line of code that
activates the buttons through the nested movie clips?
Thanks for any help in advance
Damien
Yea i tried running some trace statements but the onRollover,
onRollout and all other mouse triggered events are not fired. I
decided to create a brand new movie clip outside of the main
template, finish building that component and then insert it in the
main template and work out scope issues later. Hopefully it will
come together alright.
Thanks again for ya help Ned
Will no doubt be in touche soon with another problem haha
Damien
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Button no longer works when inside a Movie Clip?
Again I turn to the almighty Adobe forums for help...
So basically, I've had this problem for over a day now, and I've posted on Experts-Exchange.com... to no avail really.
So here we go:
I have a button in a Flash project I've made. It's used to jump to another place on the root timeline, labelled "Why". It used to work perfectly.
I have now placed the button inside a movie clip (it has to be in an animated sequence), but now it no longer works. It appears to work fine, the rollover state works and all. But when clicked it does nothing.
The code I use to work the buttons goes on the main timeline, the code for this button is:
mc_anim_backdrops_menu.btn_subsection1.onRelease = function() {
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Why does it no longer work? and what can I do to fix it?
The question is posted here over at Experts Exchange - http://www.experts-exchange.com/Software/Photos_Graphics/Web_Graphics/Macromedia_Flash/Act ionScript/Q_24888850.html
what we've tried there is tracing the problem. The code seems to be pointing to the right place, but none of the actual function works.. as you'll be able to see if you open up the attached file (and change it's extension from .txt to .fla to get it working)
So would someone be able to open it up, have a look and tell me what's wrong? Because I'm stumped. And frustrated.My guess is that you have a scope problem. By putting the button inside a movieclip you have made the buttons scope the same as that clip.
So if you add a trace inside the release event handler, what do you get?
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I'm guessing it is "_level0.mc_anim_backdrops_menu," right?
So since you are using the global function of gotoAndPlay() it is looking for that label in the current timeline and not finding it.
You should probably use the MovieClip method and specifiy which timeline it should look in.
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So does anyone have any ideas?My guess is that you have a scope problem. By putting the button inside a movieclip you have made the buttons scope the same as that clip.
So if you add a trace inside the release event handler, what do you get?
trace("My current scope is: "+this);
I'm guessing it is "_level0.mc_anim_backdrops_menu," right?
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My guess is that you have a scope problem. By putting the button inside a movieclip you have made the buttons scope the same as that clip.
So if you add a trace inside the release event handler, what do you get?
trace("My current scope is: "+this);
I'm guessing it is "_level0.mc_anim_backdrops_menu," right?
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My guess is that you have a scope problem. By putting the button inside a movieclip you have made the buttons scope the same as that clip.
So if you add a trace inside the release event handler, what do you get?
trace("My current scope is: "+this);
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Mediafire Link
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It seems something wrong with your FULL admin account ? Do you've any other FULL Admin account? If so, can you try with that account?
Anoop C Nair (My Blog www.AnoopCNair.com)
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[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
[void] [System.Reflection.Assembly]::LoadWithPartialName("System.Drawing")
Write-Host "Creating The Form For Selecting Templates"
$TemplateForm = New-Object System.Windows.Forms.Form
$TemplateForm.Text = "Select a Template"
$TemplateForm.Size = New-Object System.Drawing.Size(640,700)
$TemplateForm.StartPosition = "CenterScreen"
Write-Host "Enabling Keystroke Response on Form"
$TemplateForm.KeyPreview = $True
Write-Host "Defining Keystroke Response for Enter Key"
$TemplateForm.Add_KeyDown({if ($_.KeyCode -eq "Enter")
{$SelectedTemplate=$TemplateListBox.SelectedItem;$newuserfirstname=$FnameTextBox.Text;$newuserlastname=$LnameTextBox.Text;$newusertitle=$TitleTextBox.Text;$newuserhiringmanager=$MgrNameTextBox.Text;$newuserphonenumber=$PhoneNumberTextBox.Text;$newuserdepartment=$DeptTextBox.Text;$TemplateForm.Close()}})
Write-Host "Defining Keystroke Response for Esc Key"
$TemplateForm.Add_KeyDown({if ($_.KeyCode -eq "Escape")
{$TemplateForm.Close()}})
Write-Host "Placing OK Button On Form"
$OKButton = New-Object System.Windows.Forms.Button
$OKButton.Location = New-Object System.Drawing.Size(75,550)
$OKButton.Size = New-Object System.Drawing.Size(75,23)
$OKButton.Text = "Create User"
$OKButton.Add_Click({$SelectedTemplate=$TemplateListBox.SelectedItem;$newuserfirstname=$FnameTextBox.Text;$newuserlastname=$LnameTextBox.Text;$newusertitle=$TitleTextBox.Text;$newuserhiringmanager=$MgrNameTextBox.Text;$newuserphonenumber=$PhoneNumberTextBox.Text;$newuserdepartment=$DeptTextBox.Text;$TemplateForm.Close()})
$TemplateForm.Controls.Add($OKButton)
Write-Host "Placing Cancel Button On Form"
$CancelButton = New-Object System.Windows.Forms.Button
$CancelButton.Location = New-Object System.Drawing.Size(150,550)
$CancelButton.Size = New-Object System.Drawing.Size(75,23)
$CancelButton.Text = "Cancel"
$CancelButton.Add_Click({$TemplateForm.Close()})
$TemplateForm.Controls.Add($CancelButton)
Write-Host "Placing Label On Template List Box"
$TemplateListLabel = New-Object System.Windows.Forms.Label
$TemplateListLabel.Location = New-Object System.Drawing.Size(10,20)
$TemplateListLabel.Size = New-Object System.Drawing.Size(280,20)
$TemplateListLabel.Text = "Please fill out the following new user information:"
$TemplateForm.Controls.Add($TemplateListLabel)
Write-Host "Creating Template List Box for Form"
$TemplateListBox = New-Object System.Windows.Forms.ListBox
$TemplateListBox.Location = New-Object System.Drawing.Size(10,40)
$TemplateListBox.Size = New-Object System.Drawing.Size(260,20)
$TemplateListBox.Height = 520
Write-Host "Placing Label On First Name Box for Form"
$FnameTextLabel = New-Object System.Windows.Forms.Label
$FnameTextLabel.Location = New-Object System.Drawing.Size(300,20)
$FnameTextLabel.Size = New-Object System.Drawing.Size(95,20)
$FnameTextLabel.Text = "First Name:"
$TemplateForm.Controls.Add($FnameTextLabel)
Write-Host "Creating First Name Box for Form"
$FnameTextBox = New-Object System.Windows.Forms.TextBox
$FnameTextBox.Location = New-Object System.Drawing.Size(300,40)
$FnameTextBox.Size = New-Object System.Drawing.Size(95,20)
$TemplateForm.Controls.Add($FnameTextBox)
Write-Host "Placing Label On Last Name Box for Form"
$LnameTextLabel = New-Object System.Windows.Forms.Label
$LnameTextLabel.Location = New-Object System.Drawing.Size(400,20)
$LnameTextLabel.Size = New-Object System.Drawing.Size(95,20)
$LnameTextLabel.Text = "Last Name:"
$TemplateForm.Controls.Add($LnameTextLabel)
Write-Host "Creating Last Name Box for Form"
$LnameTextBox = New-Object System.Windows.Forms.TextBox
$LnameTextBox.Location = New-Object System.Drawing.Size(400,40)
$LnameTextBox.Size = New-Object System.Drawing.Size(95,20)
$TemplateForm.Controls.Add($LnameTextBox)
Write-Host "Placing Label On Department Box for Form"
$DeptTextLabel = New-Object System.Windows.Forms.Label
$DeptTextLabel.Location = New-Object System.Drawing.Size(500,20)
$DeptTextLabel.Size = New-Object System.Drawing.Size(95,20)
$DeptTextLabel.Text = "Department:"
$TemplateForm.Controls.Add($DeptTextLabel)
Write-Host "Creating Department Box for Form"
$DeptTextBox = New-Object System.Windows.Forms.TextBox
$DeptTextBox.Location = New-Object System.Drawing.Size(500,40)
$DeptTextBox.Size = New-Object System.Drawing.Size(95,20)
$TemplateForm.Controls.Add($DeptTextBox)
Write-Host "Placing Label On Title Box for Form"
$TitleTextLabel = New-Object System.Windows.Forms.Label
$TitleTextLabel.Location = New-Object System.Drawing.Size(300,70)
$TitleTextLabel.Size = New-Object System.Drawing.Size(95,20)
$TitleTextLabel.Text = "Title:"
$TemplateForm.Controls.Add($TitleTextLabel)
Write-Host "Creating Title Box for Form"
$TitleTextBox = New-Object System.Windows.Forms.TextBox
$TitleTextBox.Location = New-Object System.Drawing.Size(300,90)
$TitleTextBox.Size = New-Object System.Drawing.Size(95,20)
$TemplateForm.Controls.Add($TitleTextBox)
Write-Host "Placing Label On Manager Name Box for Form"
$MgrNameTextLabel = New-Object System.Windows.Forms.Label
$MgrNameTextLabel.Location = New-Object System.Drawing.Size(400,70)
$MgrNameTextLabel.Size = New-Object System.Drawing.Size(95,20)
$MgrNameTextLabel.Text = "Manager's Name:"
$TemplateForm.Controls.Add($MgrNameTextLabel)
Write-Host "Creating Manager's Name Box for Form"
$MgrNameTextBox = New-Object System.Windows.Forms.TextBox
$MgrNameTextBox.Location = New-Object System.Drawing.Size(400,90)
$MgrNameTextBox.Size = New-Object System.Drawing.Size(95,20)
$TemplateForm.Controls.Add($MgrNameTextBox)
Write-Host "Placing Label On Manager Name Box for Form"
$PhoneNumberTextLabel = New-Object System.Windows.Forms.Label
$PhoneNumberTextLabel.Location = New-Object System.Drawing.Size(500,70)
$PhoneNumberTextLabel.Size = New-Object System.Drawing.Size(95,20)
$PhoneNumberTextLabel.Text = "Phone Number:"
$TemplateForm.Controls.Add($PhoneNumberTextLabel)
Write-Host "Creating Phone Number Box for Form"
$PhoneNumberTextBox = New-Object System.Windows.Forms.TextBox
$PhoneNumberTextBox.Location = New-Object System.Drawing.Size(500,90)
$PhoneNumberTextBox.Size = New-Object System.Drawing.Size(95,20)
$TemplateForm.Controls.Add($PhoneNumberTextBox)
Write-Host "Creating Fake List of Templates"
$TemplateGroupList = "Test"
$TemplateForm.Controls.Add($TemplateListBox)
Write-Host "Ensuring List Box appears in front of other windows"
$TemplateForm.Topmost = $True
$TemplateForm.Add_Shown({$TemplateForm.Activate()})
[void] $TemplateForm.ShowDialog()
$SelectedTemplate
$newuserfirstname
$newuserlastname
$newusertitle
$newuserhiringmanager
$newuserphonenumber
$newuserdepartment
PauseIf you plan on performing all of the work under the Click event, then you won't need to worry about assigning a Script scope to the variables, but if you are planning on using those variables outside of the Event, then David's answer is the way to go.
Another option is to use a hash table as it also works around the issue with variable scope in a UI Event.
#Define at beginning of script
$hashtable = @{}
$OKButton.Add_Click({$hashtable.SelectedTemplate=$Something})
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PowerShell Deep Dives Book -
Hello,
I'm Currently evaluating TestStand as an alternative for an in-house developed Test Sequencer.
To start our own Test Sequencer we use a small box, connected to a DIO board. The box has a start button and an abort button. The box also has a pass, a fail and a running led.
The interface with this box is made via some digital lines of a PCI-DIO-96.
In our own Test Sequencer we have groups named Init, Run, Abort, Exit.
The Init group is executed at startup (only once). It is used to initialize all the HW and SW. -> I guess this is the Pre UUT Loop callback in TestStand.
The Exit group is only executed once at the end of the day when the application is terminated. It is used to free all the used hardware and cleanup all the resources. This probably is the Post UUT Loop Callback in TS.
When a product needs to be tested, the operator presses the "start" button which triggers our own Test Sequencer and the run and abort group are being executed (first the run group, afterwards the abort group).
When the product is being tested the "running led" of the little box lights up to indicate to the operator that the application is running. (only when the run and abort group are running)
The Run group has all the functional tests in it. (MainSequence)
The abort group is used to put everything back in it's original state after the test on this single product is done. (Post UUT)
When executing the tests and something goes wrong (operator gets stuck in a clamper, ...) the operator can still press the abort button and then the execution immediately jumps from the currently executing step in the run group to the first step of the abort group. So, when something goes wrong, immediately the abort group is called.
At the end of the run and abort group, if no errors occured, the "pass led" lights up. If one or more steps went wrong the "fail" led lights up.
This setup can also be used to test multiple product in parallel. At that time all the different parallel testers have such a small box which contains a "start" and "abort" button and a pass, fail and running led. (it is possible that they are all connected to the same PCI-DIO-96 board. )
My question:
Is it possible to do something similar like this in Teststand? If yes, is there an example available that shows me how to do this in TestStand? (externally trigger the execution of TestStand)
Typically, in the Init group (Pre UUT Loop) the digital interface box gets initialised.
In the Close group (Post UUT Loop) the digital interface box is taken out of scope.
Note: The PCI-DIO-96 board to which the digital interface box is connected will also be used in the rest of the developed application (MainSequence, ...)
What's really important for me is that I can create a process model that all the application developers in our organisation can use. I really don't want any of the application developers (limited software experience) to mess around in all the features of TestStand.
For them it's important that they just add the function DigitalInterfaceBoxInit () in the Pre UUT Loop Callback and the DigitalInterfaceBoxClose () in the Post UUT Loop Callback, and then everything works!
It is important that the appliation developers do not have to create any global variables, other functions, synchronisations, parallel sequences, ... in TestStand. All this needs to be done with a simple call to the DigitalInterfaceBoxInit function.
Thanks in advance for all the help!
Best Regards,
Dennis Vanotterdijk
[email protected]Dennis-
Your application sounds very well suited to TestStand's abilities. I am also quite impressed with your knowledge of how TestStand's architecture is arranged when you are still just considering whether or not to use it.
I think that TestStand would work really well for you in this application. Like you mentioned it will provide you with a form of standardization for your application developers to work from. It also provides the flexibility for you to add your custom routines in many different places. TestStand also makes parallel and batch testing much easier in TS 2.0 so that you could develop one test for your product and execute different instances of it in parallel to test multiple products at once.
As for your specific question about how to c
ontrol TestStand using a DIO board. I think this is very feasible and should not be too difficult. Since TestStand provides you the ability to create a custom operator interface your operator interface could monitor the status of your DIO board and launch/abort executions based on the read values. Usually the executions are launched/aborted when a button on the GUI is pressed however, I do not see any thing different about basing the action on a DI signal vs a mouse click. I am sure your application is more involved than this high level description but from the sounds of it I think it is very possible to do with TestStand.
Based on my experience of building test systems with TestStand and your description of the application, I would feel very confident in using TestStand to achieve all the goals you mentioned. If you have further detailed questions on how one of your features might be implemented, feel free to contact one of our Application Engineers or email us at www.ni.com/ask
and we would be glad to help you.
Best regards,
Richard McDonell
National Instruments -
Clicking twice on a Form submit button
I have problem that I need either help on solving or ideas on a different solution please.
I have some code in a request scope backing bean that sets a Boolean in a session cope bean to true. This indicates that the form has been submitted within this session.
So if a user tries to submit the same form in the same session, the form backing bean will check the session bean property, see that it is set to true and the method which handles the Form�s commandButton in the backing bean returns null, with a message saying that the form can not be resubmitted.
Also within the session bean I set a property that indicates if a credit card payment was made or not, and when the form backing bean sends its message on a form resubmit, it also informs the user if a credit card transaction had actually occurred or not.
This works fine when you fully submit the form and return to the form page and try to resubmit it. But (there always is a but) when originally submitting the form, if a user clicks the submit button once, and then once again in quick succession (not a double click though) the session form property that gets set to true when the credit card payment is made does not get resolved correctly. It gets resolved as false (this is how it is initialized), even though it was set to true as a result of the first click.
Only in the case of the clicking twice scenario I get an exception in the log file, which I can�t trace back. The request is directed through a filter �OrderAccessControlFilter� which seems to mask where the exception originally occurred.
Sorry for the long explanation, I would appreciate any help.
Below is the exception:
10-Feb-2005 10:55:16 com.sun.faces.lifecycle.InvokeApplicationPhase execute
SEVERE: Index: 0, Size: 0
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
at java.util.ArrayList.RangeCheck(ArrayList.java:507)
at java.util.ArrayList.remove(ArrayList.java:392)
at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:271)
at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:381)
at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:75)
at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:90)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at com.syndero.lingo.order.OrderAccessControlFilter.doFilter(OrderAccessControlFilter.java:199)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:540)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:534)
10-Feb-2005 10:55:16 com.syndero.lingo.order.OrderAccessControlFilter doFilter
SEVERE: Error in OrderAccessControlFilter:
javax.servlet.ServletException: Index: 0, Size: 0
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:209)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:237)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at com.syndero.lingo.order.OrderAccessControlFilter.doFilter(OrderAccessControlFilter.java:199)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:186)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:157)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:540)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:534)Hi,
I am also facing the same problem. I have 2 buttons on my page, enable and disable. When I click enable and then disable in quick succession, the application crashes.
Also, I put in some System out statemets in the button handlers and found out that a new thread is spawned for every request made. Each if this thread tries to service all the actions performed on the page.
For eg : if i click on Enable and the Disable in my application, the flow is like:
1. Thread 1 goes into the enable handler
2. A new Thread 2 goes into the enable handler
3. Thread 1 returns from enable action
4. Thread 1 goes into the disable handler
5. Thread 2 returns from enable handler
6. Thread 1 returns from disable handler.
7. Application crashes.
Can anyone please explain this flow?
Thanks,
Mahajan. -
Javascript embedded in button pl/sql event handler not being executed
Javascript calls not working from pl/sql button event handler. What am I missing? Are specific settings needed to execute javascript from pl/sql proceedures?
Example: Want to toggle target='_blank' off and on in a button pl/sql event handler to open url call in new window & then reset when processing submit is done & the app returns to the form.
portal form button's pl/sql submit handler:
begin
htp.p('<script language=JavaScript>') ;
htp.p('this.form.target="_blank"') ;
htp.p('</script>') ;
PORTAL.wwa_app_module.set_target('http://www.oracle.com') ;
htp.p('<script language=JavaScript>') ;
htp.p('this.form.target="_blank"') ;
htp.p('</script>') ;
end ;
Putting the following in the button's javascript on_click event handler works great:
this.form.target='_blank'
to force opening new window with a call in the button's submit pl/sql code via:
PORTAL.wwa_app_module.set_target('http://www.oracle.com') ;
but then the target='_blank' is left on when the submit is done & we return to the form.
putting the above javascript as a function (called fcn_newpage) elsewhere (e.g., after form opens) & calling in the submit pl/sql with
htp.p('fcn_newpage') ;
also doesn't work.
Metalink thought this was an application issue instead of a bug, so thought I'd see if anyone knows what's going wrong here. (Portal 9.0.4.1)thanks for your discussion of my post.
Please clarify:
"htp.p('fcn_newwindow') sends a string":
What would you suggest the proper syntax for a function fcn_newwindow() call from a pl/sql javascript block that differs from
htp.p('<script language="Javascript">') ;
htp.p('fcn_newwindow');
htp.p('</script>');
or more simply
htp.p('fcn_newwindow') ;
More generally, what I'm trying to figure out is under what conditions javascript is executed, if ever, in the pl/sql of a button (either the submit or custom event handler, depending on the button).
I've seen lots of posts asking how to do a simple htp.p('alert("THIS IS TROUBLE")') ; in a pl/sql event handler for a button on a form, but no description of how this can be done successfully.
In addition to alerts, in my case, I'd like to call a javascript fcn from a pl/sql event handle that would pass a URL (e.g., http://www.oracle.com) where the javascript fcn executed
window.open(URL). The API call to set_target(URL) in pl/sql has no ability to open in a new window, so calling that is inadequate to my needs and I must resort to javascript.
Its clear in the PL/SQL of a button, you can effect form components since p_session..set_target & p_session.get_target set or get the contents of form components.
So to see if javascript ever works, I tried to focus on something simple that only had to set what amounts to an enviromental variable when we returned to the form after a post. I chose to try to change the html value of TARGET from javascript in the PL/SQL button because it doesn't need to be implemented until we finish the post and return to the form.
So I focused on a hack, setting this.form.TARGET='_blank' in the on_click event handler that forced every subsequent URL call or refresh of the form to be a new window. I then wanted to turn off opening new windows once I'd opened the URL call in a new window by setting TARGET='' in the portal form. I can achieve what I want by coding this.form.TARGET='' in the javascript (on_focus, on_change, or on_mousedown, ...) of every form component that might refresh the form. However, that is a ridiculous hack when a simple htp.p('<script>') ; htp.p('this.form.target=""') ; htp.p('</script>') ; at the end of the button's pl/sql event handle should do the same thing reliably if javascript ever works in the pl/sql event handler.
If we didn't have access to form components through p_session calls, I'd assume it was a scope issue (what is available from the pl/sql event handler). But unless my syntax is just off, when, if ever, can javascript be used in a portal form's pl/sql event handler for a button?
if I code a javascript funtion in the forms' pl/sql before displaying form:
htp.p('<script language="JavaScript">') ;
htp.p('function fcn_new_window(URL)') ;
htp.p('window.open(URL)' ) ;
htp.p('</script>') ;
the function can be called from a button's on_click javascript event handler:
fcn_new_window('http://www.oracle.com')
but from the same button's pl/sql submit event handler this call doesn't work: htp.p('fcn_new_window("http://www.oracle.com")')
So my questions remain: Is there other syntax I need, or does javascript ever work properly from the pl/sql of a form button's event handler? If it doesn't work, isn't this a bug that should be fixed by Oracle?
I can probably figure out hacks to make things work the way I need, but executing javascript from pl/sql event handlers seems to be the expected way to affect portal html pages (forms, reports, ...) and it seems not to work as expected. I don't feel I should have to implement hacks for something as simple as calling a javascript function from pl/sql when almost every example I've found in metalink or the forums or Oracle Press's "portal bible" suggests using javascript from pl/sql via the utility htp.p() to effect web page components in portal.
My TAR on the subject, while still open, returned the result basically: "We can reproduce your situation. Everything looks okay to us, but we can't explain how to use javascript where you want or point you to any documentation that would solve your problem or expain why it should not work the way you want it to. We don't feel its a technical issue. Why don't you post the problem on the portal applications forum."
I'm hoping I'm just missing something fundamental and everything will work if I implement it a little differently. So if anyone sees my error, please let me know.
by the way, not sure this is germain, but in reference to your comment:
"redirections in pl/sql procedures give a peculiar result. in a pl/sql procedure, usually, portals give the last redirection statement and ignore anything else coming after it."
if I try to raise an alert:
htp.p('alert("you screwed up")');
return;
in a pl/sql event handler, it still doesn't raise the alert, even though its the last thing implemented in the event handler. But if I set the value of a text box using p_session..set_value_as_string() at the same spot, it correctly sets the text box value when I return to the form.
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