I have two custom controls tDescendant1 and tDescendant2 that are descendants of other custom control tAncestor. tAncestor handle some events as MouseDown, Click, etc. tDescendant1 and tDescendant2 also must handle the Click event, so they, in turn, set the ancestor's OnClick event to its own handler.
I have on the form Descendant1 and Descendant2 (wich are instances of tDescendant1 and tDescendant2 respectively) and I need that when an OnClick event is fired on Descendant1, the underlying tAncestor of Descendant2 be notified.
Can I use observers to accomplish this?
Appreciate any suggestion. Thanks.
I've searched the Internet and I cannot find a list of <p:ajax> events. Can anyone provide a complete list of events for the <p:ajax> tag?
I'm particularly interested if there is an onblur event or something similar.
You might want to look at "JavaScript HTML DOM Events" for a general overview of events:
http://www.w3schools.com/jsref/dom_obj_event.asp
PrimeFaces is built on jQuery, so here's jQuery's "Events" documentation:
http://api.jquery.com/category/events/
http://api.jquery.com/category/events/form-events/
http://api.jquery.com/category/events/keyboard-events/
http://api.jquery.com/category/events/mouse-events/
http://api.jquery.com/category/events/browser-events/
Below, I've listed some of the more common events, with comments about where they can be used (taken from jQuery documentation).
Mouse Events
(Any HTML element can receive these events.)
click
dblclick
mousedown
mousemove
mouseover
mouseout
mouseup
Keyboard Events
(These events can be attached to any element, but the event is only sent to the element that has the focus. Focusable elements can vary between browsers, but form elements can always get focus so are reasonable candidates for these event types.)
keydown
keypress
keyup
Form Events
blur (In recent browsers, the domain of the event has been extended to include all element types.)
change (This event is limited to <input> elements, <textarea> boxes and <select> elements.)
focus (This event is implicitly applicable to a limited set of elements, such as form elements (<input>, <select>, etc.) and links (<a href>). In recent browser versions, the event can be extended to include all element types by explicitly setting the element's tabindex property. An element can gain focus via keyboard commands, such as the Tab key, or by mouse clicks on the element.)
select (This event is limited to <input type="text"> fields and <textarea> boxes.)
submit (It can only be attached to <form> elements.)
You can search for "Ajax Behavior Events" in PrimeFaces User's Guide, and you will find plenty of them for all supported components. That's also what PrimeFaces lead Optimus Prime suggest to do in this related question at the PrimeFaces forum <p:ajax> event list?
There is no onblur event, that's the HTML attribute name, but there is a blur event. It's just without the "on" prefix like as the HTML attribute name. You can also look at all "on*" attributes of the tag documentation of the component in question to see which are all available, e.g. <p:inputText>.
Schedule provides various ajax behavior events to respond user actions.
"dateSelect" org.primefaces.event.SelectEvent When a date is selected.
"eventSelect" org.primefaces.event.SelectEvent When an event is selected.
"eventMove" org.primefaces.event.ScheduleEntryMoveEvent When an event is moved.
"eventResize" org.primefaces.event.ScheduleEntryResizeEvent When an event is resized.
"viewChange" org.primefaces.event.SelectEvent When a view is changed.
"toggleSelect" org.primefaces.event.ToggleSelectEvent When toggle all checkbox changes
"expand" org.primefaces.event.NodeExpandEvent When a node is expanded.
"collapse" org.primefaces.event.NodeCollapseEvent When a node is collapsed.
"select" org.primefaces.event.NodeSelectEvent When a node is selected.-
"collapse" org.primefaces.event.NodeUnselectEvent When a node is unselected
"expand org.primefaces.event.NodeExpandEvent When a node is expanded.
"unselect" org.primefaces.event.NodeUnselectEvent When a node is unselected.
"colResize" org.primefaces.event.ColumnResizeEvent When a column is resized
"page" org.primefaces.event.data.PageEvent On pagination.
"sort" org.primefaces.event.data.SortEvent When a column is sorted.
"filter" org.primefaces.event.data.FilterEvent On filtering.
"rowSelect" org.primefaces.event.SelectEvent When a row is being selected.
"rowUnselect" org.primefaces.event.UnselectEvent When a row is being unselected.
"rowEdit" org.primefaces.event.RowEditEvent When a row is edited.
"rowEditInit" org.primefaces.event.RowEditEvent When a row switches to edit mode
"rowEditCancel" org.primefaces.event.RowEditEvent When row edit is cancelled.
"colResize" org.primefaces.event.ColumnResizeEvent When a column is being selected.
"toggleSelect" org.primefaces.event.ToggleSelectEvent When header checkbox is toggled.
"colReorder" - When columns are reordered.
"rowSelectRadio" org.primefaces.event.SelectEvent Row selection with radio.
"rowSelectCheckbox" org.primefaces.event.SelectEvent Row selection with checkbox.
"rowUnselectCheckbox" org.primefaces.event.UnselectEvent Row unselection with checkbox.
"rowDblselect" org.primefaces.event.SelectEvent Row selection with double click.
"rowToggle" org.primefaces.event.ToggleEvent Row expand or collapse.
"contextMenu" org.primefaces.event.SelectEvent ContextMenu display.
"cellEdit" org.primefaces.event.CellEditEvent When a cell is edited.
"rowReorder" org.primefaces.event.ReorderEvent On row reorder.
there is more in here https://www.primefaces.org/docs/guide/primefaces_user_guide_5_0.pdf
As the list of possible events is not tied to p:ajax itself but to the component it is used with, you'll have to ask the component for which ajax events it supports.
There are multiple ways to determine the ajax events for a given component:
1) Ask the component in xhtml:
You can output the list directly in xhtml by binding that component to a request scoped variable and printing the eventNames property:
<p:autoComplete binding="#{ac}"></p:autoComplete>
<h:outputText value="#{ac.eventNames}" />
This outputs
[blur, change, valueChange, click, dblclick, focus, keydown, keypress, keyup,
mousedown, mousemove, mouseout, mouseover, mouseup, select, itemSelect,
itemUnselect, query, moreText, clear]
2) Ask the component in java code:
Figure out the component implementation class and invoke its' implementation of javax.faces.component.UIComponentBase.getEventNames() method:
import javax.faces.component.UIComponentBase;
public class SomeTest {
public static void main(String[] args) {
dumpEvents(new org.primefaces.component.inputtext.InputText());
dumpEvents(new org.primefaces.component.autocomplete.AutoComplete());
dumpEvents(new org.primefaces.component.datatable.DataTable());
}
private static void dumpEvents(UIComponentBase comp) {
System.out.println(
comp + ":\n\tdefaultEvent: " + comp.getDefaultEventName() + ";\n\tEvents: " + comp.getEventNames());
}
}
This outputs:
org.primefaces.component.inputtext.InputText#239963d8:
defaultEvent: valueChange;
Events: [blur, change, valueChange, click, dblclick, focus, keydown, keypress, keyup, mousedown, mousemove, mouseout, mouseover, mouseup, select]
org.primefaces.component.autocomplete.AutoComplete#72d818d1:
defaultEvent: valueChange;
Events: [blur, change, valueChange, click, dblclick, focus, keydown, keypress, keyup, mousedown, mousemove, mouseout, mouseover, mouseup, select, itemSelect, itemUnselect, query, moreText, clear]
org.primefaces.component.datatable.DataTable#614ddd49:
defaultEvent: null;
Events: [rowUnselect, colReorder, tap, rowEditInit, toggleSelect, cellEditInit, sort, rowToggle, cellEdit, rowSelectRadio, filter, cellEditCancel, rowSelect, contextMenu, taphold, rowReorder, colResize, rowUnselectCheckbox, rowDblselect, rowEdit, page, rowEditCancel, virtualScroll, rowSelectCheckbox]
3) 'rtfm' ;-)
Best option is to look into the documentation of the particular component in use as hopefully provided by the component developers, not limited to PrimeFaces btw. (p:ajax can be attached to any component providing ajax behaviors).
The advantage over previous suggestions is that the documentation not only provides the event names, but also enhanced description of the event potentially enriched with an event type class that can be caught by a listener.
For example the org.primefaces.event.SelectEvent in case of
<p:ajax event="itemSelect" listener="#{anyBean.onItemSelect}"/>
and listener method signature public void onItemSelect(SelectEvent) provides additional event contextual data.
Where there is no explicit list of ajax events on a compoment in the PrimeFaces documentation, the list of on* javascript callbacks can be used as events by removing the 'on' and using the remainder as an event name. The other answers in this question provides help on these plain dom events too.
Unfortunatelly, Ajax events are poorly documented and I haven't found any comprehensive list. For example, User Guide v. 3.5 lists itemChange event for p:autoComplete, but forgets to mention change event.
If you want to find out which events are supported:
Download and unpack primefaces source jar
Find the JavaScript file, where your component is defined (for example, most form components such as SelectOneMenu are defined in forms.js)
Search for this.cfg.behaviors references
For example, this section is responsible for launching toggleSelect event in SelectCheckboxMenu component:
fireToggleSelectEvent: function(checked) {
if(this.cfg.behaviors) {
var toggleSelectBehavior = this.cfg.behaviors['toggleSelect'];
if(toggleSelectBehavior) {
var ext = {
params: [{name: this.id + '_checked', value: checked}]
}
}
toggleSelectBehavior.call(this, null, ext);
}
},
I've got the list in debug mode;
first I saw the point at which the error was thrown
javax.faces.view.facelets.TagException: /showcase/partial_submit.xhtml
#26,36 Event:changed is not supported.
org.primefaces.component.behavior.ajax.AjaxBehaviorHandler.applyAttachedObject(AjaxBehaviorHandler.java:179)
org.primefaces.component.behavior.ajax.AjaxBehaviorHandler.apply(AjaxBehaviorHandler.java:157)
and then I debugged AjaxBehaviorHandler
so if you want discover the right list of supported event, you can generate an error (using an event name that is wrong), and follow this way
Here's what I found during debug.
I have been following this example, http://www.ok-soft-gmbh.com/jqGrid/DependendSelects2.htm, as it is just what I need. I have got it working but it doesnt work when scrolling through records. If you bring up the form and scroll from a UK record to a US record, the list doesnt change. The onChange event only fires when the user selects from the select drop down.
Is there a way around this?
Thanks for your help.
James
My old demo uses 'change' event handler defined in the dataEvents property of the editoptions. In the dataEvents array one can define other event handlers.
You need just bind keyup to the column exactly like it's described in the answer. In the body of the event handler you can do the same actions as in the body of the 'change' event handler (you can place the code in a function and call it from the both handlers). In the way you should be able to solve the problem.
UPDATED: I updated the old answer and another one which was origin for the demo which you used. The new demo support the navigation buttons (the buttons to edit the 'next' or the 'previous' row) in the editing form.
So I have an advanced search form, and when you scroll down the results, the search results summary sticks to the top of the page as you scroll using the 'sometimes fixed' code described here - http://www.bennadel.com/blog/1810-Creating-A-Sometimes-Fixed-Position-Element-With-jQuery.htm
This all works very nicely, but when some of the form elements are changed, it reloads the whole form, results summary, and results list using AJAX.
I noticed it was using bind to check for the scroll / resize, but the element it needs to effect has obviously been replaced with AJAX, so I changed it to live. This didnt work, on further digging I found out that initially live() only supported certain events, and then was made to work on all events, including custom ones, so why does it still not seem to be working with scroll?
In jQuery 1.3.x only the following JavaScript events (in addition to
custom events) could be bound with .live(): click, dblclick, keydown,
keypress, keyup, mousedown, mousemove, mouseout, mouseover, and
mouseup. As of jQuery 1.4 the .live() method supports custom events as
well as all JavaScript events that bubble. As of jQuery 1.4.1 even
focus and blur work with live (mapping to the more appropriate,
bubbling, events focusin and focusout). As of jQuery 1.4.1 the hover
event can be specified (mapping to mouseenter and mouseleave, which,
in turn, are mapped to mouseover and mouseout).
Have tried it with jQuery 1.4.1, 1.5.1, 1.6.2 and no joy. Am I doing something stupid, or is what I am trying to do just not possible?
Wasnt looking likely I would get an easy solution...
So I rewrote the way the search script worked so that the 'sometimes fixed' div wasnt regenerated by ajax, and it loaded the form, results summary, and results directly into their divs
I have a aspx page that contain "asp:RequiredFieldValidator" controls;Problem that is when each of "asp:RequiredFieldValidator" controls activate and show their messages; other controls in my page don't working even "CANCEL" button!!!
i want to enable controls in my "NEXT" button MouseDown and then disable them at my "NEXT" button MouseUp.
Thanks for any other solutions...
Specifically to answer your question as stated in your title: to add additional event handlers to an asp:button or other server controls that are not composite you simply add the handler to the element. Include onmousedown="myMouseDownHandler(this);" in the element and the javascript function myMouseDownHandler will fire.
However, I think there is a better way to do what your asking but the description of the question is not coherent enough for me to quite figure out what you're asking. I realize you may not be a native English speaker but perhaps you could give it another pass.
Use ValidationGroup property on controls that are validated and controls that triggers validation (e.g. save/update buttons) and on validators. Additionally set CausesValidation property to false on each button that does not need to trigger validation (cancel button).