Prevent the default behavior of the events

Similar Questions

• Prevent the event of action af:fileDownloadActionListener

  # Background
  
  The following problem is also described in the: http://stackoverflow.com/questions/14638103/prevent-affiledownloadactionlistener-action-event
  
  Using JDeveloper 11.1.2.3 to create a report download button using 'fileDownloadActionListener' as follows:

      <af:commandButton text="Run Report" id="submitReport">
        <af:fileDownloadActionListener method="#{reportBean.run}"/>
      </af:commandButton>

  At the top of the JSF page is the following:
  

      <f:view afterPhase="#{validationBean.afterPhase}" ...>
        ...
          <af:form id="f1">
            <f:event listener="#{validationBean.postValidate}" type="postValidate"/>

  The idea is that the bean Validation allows you to capture validation issues as follows:
  

      public void afterPhase(javax.faces.event.PhaseEvent phaseEvent) {
        if (phaseEvent.getPhaseId() == PhaseId.RENDER_RESPONSE) {
          FacesContext context = phaseEvent.getFacesContext();
          FacesMessage.Severity severity = context.getMaximumSeverity();
      
          if (isSevereError(severity)) {
            context.getExternalContext().getSessionMap().put(ERROR_FLAG_NAME, true);
          }
        }
      }

  This works as expected. When the user presses the button, but the form has an error, the session variable "validationError" is set to 'true '. This should allow the frame avoid the generated report if the form parameters have errors.
  
  # Problem
  
  The session variable "validationError" is used by the run method of the bean the report as follows:
  

        public void run(FacesContext facesContext, OutputStream outputStream) {
          Object error = facesContext.getExternalContext().getSessionMap().get( ERROR_FLAG_NAME );
          
          if( error != null && error != Boolean.TRUE ) {
            Report report = null;
      
            try {
              report = getReport();
              report.setOutputStream(outputStream);
              configure(report.getParameters());
              report.run();
            } catch (Exception e) {
              if (report != null && facesContext != null) {
                report.publish(e);
              }
            }
          }
          else {
            facesContext.getExternalContext().getSessionMap().remove( ERROR_FLAG_NAME );
            facesContext.renderResponse();
          }
        }

  When there is a validation on the page, the "facesContext.renderResponse ()" error; the code is executed, but the resulting web page is empty. Any exceptions are documented. No errors are generated.
  
  # Question
  
  One way to avoid this situation uses a button hidden, customized Java and JavaScript, as described in the following pages:
  
  -http://jobinesh.blogspot.ca/2010/01/customizing-execution-of-to-validate.html
  -http://tompeez.wordpress.com/2011/07/14/validate-data-before-export-via-afexportcollectionactionlistener-or-affiledownloadactionlistener/
  
  However, this mechanism is complicated. The solution I have in mind will work if the page can be rendered as usual.
  
  How do force you the page to render once triggered by the event "af:fileDownloadActionListener"?
  
  Thank you!

  Dave,

  using a hidden button is the only option you have available today. I will drop an ER that fires an event to the listener fileDownload (kind of prior download) should allow you to cancel it by calling make response. As said, this does not yet exist and the hidden button is the option you have available (note that the download file tag is a tag of customer behavior and not a user interface component full, it is why there is no way yet to interrupt execution.

  Frank

• Spark ComboBox to stop prevent by default on the home keys & end events

  Greetings to the Flex community!

  Have a question about the personalization of the component s:ComboBox for my needs which are:

  If it is textInput controll can behave as original control TextInput, in which I can use the beginning and end of my keyboard to navigate in TextInput, list drop-down list. Te characters all by shift + home.

  For the moment, in the drop-down list, if I press home, it changes the selectedItem property for the first (or last, FI end of press).

  Please post suggestions. Thanks in advance.

  Listen to keydown and appeal prevents by default?

• How to prevent the opening of the popup submenu of mx:MenuBar during its events mouseOver/rollOver?

  I'm using a component mx:MenuBar with the xml data to a menu. The basic behavior as I see is, first by clicking on the top level menu item (IE on the horizontal bar), pop-up windows submenu opens. Then without clicking anywhere, if I have the mouse on / roll on the horizontal menu bar, the pop-up menus under other top level menus opens.

  This behavior seems to be incompatible. The pop-up submenus should open either on click any element of top-level menu (menu bar horizontally) or only on mouse over / roll of the menu bar.

  I want the pop-up submenus to open only when the click on the top-level menu (menu bar horizontally). So I added event handlers for the passage of the mouse as well as the rollOver events (I don't know which event gets actually produced on hovering over the menu bar horizontally). In the case of managers, I called the Event.preventDefault () method to prevent the default behavior (ie the opening of pop-up submenus).  But nothing works. I felt like I have no control over it.

  How to remove the default behavior and open the pop-up submenus only on the click event of the menu bar?

  Bar menus with no user action:

  

  Menu after clicking the 'Flex ': menu bar
  

  

  Bar menu after clicking the 'Flex' menu and hovering above the other top-level menus in the horizontal bar:
  

  
  

  All,

  Go through the link mentioned to find the answer below.

  f-mxmenubar-Flex-during-its-MOU http://StackOverflow.com/questions/15532911/How-to-prevent-the-Opening-of-pop-up-submenu-o

  This solution works perfectly like what I expected.

• Tree control double-click the default behavior

  Hi all

  Tree control has a default behavior that expand / reduce point when the double click event occurs on the parent element.

  How can I to avoid this behavior to use double custom click event without open close nodes?

  Thank you

  concerning

  Thanks, but I found solution filtering point open / close item events as in the image.

  Concerning

• Behavior of structure the event when a property of the control is changed

  Hello

  Is the normal operation of VI attached? Why the change of ownership of a random control would affect the behavior of an event structure?

  THX

  

  Don't don't never use a structure of the event within a structure of the event.

  Reading guard and recommendations when using events in LabVIEW

  What you saved to lock the hard VI, is that you turned off the setting of Panel lock before your event to their default value being checked.

  The reason why he reacts this way is that the component: the mouse to the top of the event occurs when you go and click on the toggle.  So as soon as you mouse down on the chain, this internal event structure already as the pane: mouse event queue to the top and runs immediately.

  (In fact, that while loop is useless because the while loop can execute only once.)

• Prevent the structure elements of the queue of the event?

  Is there a way to prevent a record structure and the queues of the events of the event?

  I have a state machine with a structure of the event in one of the States - the State is waiting for user input before continuing - and I wish that the structure of the event to recognize the events only when the program is in this State. I understand that the current method to catch all events is sometimes (usually) the desired behavior... Heck, I use it to my advantage most of the time. However, this is not one of those times.

  Here is a small example of my configuration:

  

  (See attachment. I guess that's too big for an extract VI, so it is a standard PNG image)

  The question that I have, is that the Structure of the continuous event of events Records even after pass to the next State. This means that if 'String' is changed at any time, the next time the queue of event happens in the state machine, all updates of the "chain" will run.

  So, how can I implement the code in such a way so that the events will be only intercepted and queue when the structure of event loop is running?

  
  

• Unexpected behavior with several structures of events manages the event itself.

  Hi, does anyone have an explanation of the following behavior?

  After 'Boolean 2' is enabled and then disabled the program "freezes". You can always pause the program but nothing does.
  For example, by pressing one of the file, Edit, View, project, Operate, tools, Windows, help or any other object inside the VI.

  This happens if I have two event structures who want to handle the same event, even if the flat sequence should be allowed only one run.

  

  This isn't a bug.

  Structures of the event should be used to handle different events. Given that you have entered your Boolean event in the two structures of the event, the event gets queued both when it occurs. This means one or the other be expected to manage the event and will, by default, lock the application. In the scale-measure of LabVIEW architectures, usually there is a structure of single event that handles all the events and then sends messages to the coast to the rest of the application to manage these events.

  There is a "Table locking" checkbox in the event dialog box which is by default enabled, but you should leave it on because it leads to bad practices otherwise.

• Override the default behavior of the button Delete of list manager

  Hello

  Everyone please help. I'm trying to override the default behavior of the button Delete of list manager. The first thing, I want to restrict users to select only one option from the list to delete; meaning don't allow multiple options for users to remember. Before removing the selected option in the list; I want to perform a Javascript/AJAX validation on the database to check if the user has permissions to remove the option from the list. If the user has privileges simple delete option selected in the list. If the user does not have privileges and then draw the attention of the user with a message "not authorized...!  and this should occur when the user selects the option in the list to the list manager, and then click Remove from the list manager.

  Remove list manager of the shutter release button of the function 'deleteListElement ($x ('P3_LM_USES'))' on the onclick event. P3_LM_USES is my element of list manager in a form.

  I use the version of Oracle APEX 4.0.2 and Oracle 11 g R2 database.

  I was able to substitute the Add button functionality using the JS function below list manager and perform validation on database by using the method of ajax on request.

  {code}

  < script type = "text/javascript" >

  <!--

  This replaces the default manager of Apex lists which removes embedded spaces from the last item when it is added to the text box

  appendToList function (value, toList)

  {

  First of all, get rid of all spaces

  trimmedValue = value;

  var ajaxRequest = new htmldb_Get (null, & APP_ID, 'APPLICATION_PROCESS = VALIDATE_ADD_USE', 0);

  ajaxRequest.addParam('x01',trimmedValue);

  var ajaxResult = ajaxRequest.get ();

  Alert (ajaxResult);

  If (ajaxResult == 1)

  {

  Alert ('after alert ajaxResult');

  Then, divide the string separated by commas in a table

  valueArray = trimmedValue.split(",");

  for (i = 0; i < valueArray.length; i ++)

  {

  If (valueArray [i]! = ' ')

  {

  found = false;

  for (j = 0; j < toList.length; j ++)

  {

  If (toList.options [j] .value is [i] valueArray)

  found = true;

  }

  If (found == false)

  toList.options [toList.length] = new Option ([i] valueArray, [i] valueArray);

  }

  }

  }

  on the other

  {

  Alert ("you cannot add it" "+ theValue +'".) Please contact the administrator of the application. ") ;

  }

  }

  ->

  < /script >

  {code}

  I have this above function JS in a section of text of element the element of P3_LM_USES list manager post. Please help me with your suggestions for the button Delete.

  Thank you

  Orton

  Hello

  I was able to solve the problem by replacing the default functionality of the list manager delete button using a JS/AJAX process. FYI, here's the JS function.

  {code}

  function deleteListElement (toList)

  {

  Alert ("Hello in function");

  var x = $x ('P3_LM_USES');

  for (var i = 0; i)< x.options.length;="">

  {

  If (x.options [i] .selected is true)

  {

  Alert (x.options [i] .value);

  var ajaxRequest = new htmldb_Get(null,&APP_ID.,'APPLICATION_PROCESS=VALIDATE_REMOVE_USE',0);

  ajaxRequest.addParam('x02',x.options[i].value);

  var ajaxResult = ajaxRequest.get ();

  If (ajaxResult == 1)

  {

  var y = x.remove (i);

  alert (y + 'removed');

  }

  on the other

  {

  Alert ("you can't remove this" ' + x.options [i] .value +' "item in the list.) Please contact the database administrator.') ;

  }

  }

  }

  }

  {code}

  Thank you

  Orton

• My calendar retains the events for a month, but when I look back over the past months, only recurring and default events are preserved.  I have a bad memory and I want that all events held on my calendar.  How can I do this?

  My calendar keeps events a month, but when I think back several months, only recurring and default events are preserved.  I have a bad memory and want to keep all the events, I put on my calendar for a year.  How can I do this?

  Go to settings > Mail, content, timing and you should see an option for synchronization. Make sure that you put in all the events if you want to keep past events calendar

  Alternatively you can also use iCloud.com to restore calendar events that may have been accidentally deleted

  If you've accidentally deleted your calendars, reminders, or contacts of...

  I hope this helps!

• Change the default behavior for the properties of the list

  It is about creating an outline numbered in the body of an email. Choosing the appropriate command-line icon icon, the numbered list will start to "1" (as it should).

  Now, suppose I have three sub-items for #1. In other programs, I'd like to see a, b, c or a few outline a similar methodology as I dash. However, in Thunderbird, it gives me 1,2,3.

  I can change that in Format > list > properties list, but the change is only for this specific set of dashes. If I go on an important point #2 and dash, then again, she will be 1,2,3.

  I want to my desired of the default behavior. Is there a way to change? I could not find one.

  Thank you

  It worked perfectly. Thank you very much!

• Need to reset the button by default when you use the structure of the event?

  When you use the buttons with a mechanical action "releasing lock" to only trigger the same structure with the same 'value has changed', the button does not jump upwards as you would expect.  I can get to behave as I want by adding a "default reset" invoke the node, but this seems somewhat exaggerated.  Is there an easier way to get the button to jump to the top after pressing on?

  The button will reset once it is read by the code. This means that the terminal is inside the structure of the event. If you move outside the terminal, it would read only the beginning of the race and then never and it will not be reset.

  If the terminal is learn the structure of the event, it is read by the code (even if it is not connected to anything) and it reset as soon as the event has a chance to run.

• User profile service, you have been logged with the default for the system profile, please see the the event log for more information or contact your administrator.

  User profile service... Help... I'm stuck and going nowhere.

  Hello

  Whenever my user try to connect this MSG poping up to the top of any solution please.

  User profile service

  you have been logged on with the default for the system profile, please see the the event log for more information or contact your administrator.

  Click on this URL and follow the instructions 100% your problem has been resolved http: //support.microsoft.com/kb/947215

  Try it.

• BlackBerry snooze hub - how to reset the snooze to the default behavior

  Hello

  I'm new to BlackBerry and I use the HUB on priv.

  When I was dozing a few message by it slide sideways, I chose a rehearsal time, and then I asked myself if I want to put this last time to repeat selected as the default time. Once I acidentially says 'yes' :-(...

  Now, I don't get repeat options (time, place,... etc) no more!

  How can we get the old behavior: the hub asking for every message that I put to repeat how it should repeat? (I've found that I can change the hour of rehearsal after rehearsal and even change for a new period of 'default', but I don't seem to be able to reset the factory completely default behavior).

  I couldn't find any option in the settings or a post here in the forum to return to the original behavior.

  Can someone help me?

  Thank you
  Dirk

  So, oddly enough my problem has resolved itself as a kind of effect of another problem...
  My hub has continued to receive emails. I was looking for solutions, deleted an e-mail account (the two I'm syncing), tried to set up even once, failed gloriously as the centre told me there was no network connection (but no problems everything like WhatsApp or Chrome), found that the background process Hub + has been blocked to transfer the data on mobile data when in the background re-enabled which could set up my account again.
  And then--surprise, surprise! -When the repetition of messages, I wondered again until when the snooze function is expected to last.

  So I don't know how it happened exactly, but maybe the deletion of an e-mail account and set up again could help.

  Dirk

• The event log online help cannot be displayed because the default browser could not be started. Class not registered

  Hello. I live in Brazil, Rio de Janeiro and already installed W8 Pro original Microsoft license.

  When I need to use the event online Help Viewer, a reception this message - the event log online help cannot be displayed because the default browser could not be started.  Class not registered.
  Help, please.
  Thank you
  Carlos.

  Hi Carlos,

  Thanks for posting your query in the Microsoft Community Forums.

  After the description of the question, I understand that you are not able to access the online help for Event Viewer.

  1. do you receive an error message when you try to open the online help for Event Viewer?
  2. who is the default browser on your computer?

  Method 1:

  
  

  "The event log online help" her will bring you to the following Web page:

  http://www.Microsoft.com/technet/support/ee/ee_basic.aspx

  I suggest you try to access the above mentioned Web page to see if it works.

  Method 2:

  You can see the article mentioned below for how to set Internet Explorer as default browser.

  Make Internet Explorer your default browser

  http://Windows.Microsoft.com/en-us/Internet-Explorer/make-IE-default-browser#IE=IE-10

  It will be useful. For any other corresponding Windows help, do not hesitate to contact us and we will be happy to help you