I'm working on an own combobox control for ASP.Net which should behave like a selectbox, I'm using a textbox, a button and a div as a selectbox replacement. It works fine and looks like this Image:
My problem now is the Selectbox close behaviour: when clicking anywhere outside the opened selectbox it should close.
So I need something like an onClick event for the whole page which should only fire when my div is open. Any suggest how to do that?
Add a click event handler to document. In the event handler, examine its target (or srcElement in IE) property to check that it isn't your open div or any of its descendants.
Set a click event handler on the document that "closes" the pseudo-combobox. In addition, set a click event handler on the pseudo-combobox's container (the div, in this case) which cancels bubbling of the event. Then any clicks in the div will bubble up only as far as the div before being halted, while clicks anywhere else will bubble all the way up to the document.
This is a much easier option than mucking around traversing the DOM from the event's target upwards to work out where the click came from.
EDIT: if you are setting the div's style to display: none; (or something similar) to hide it, then it doesn't matter if you leave the event handler on the document - hiding it when it's already hidden will have no effect. If you want to be very tidy, then add the event listeners when the div is shown, and remove them when it is hidden; but there's probably no need to bother.
document.onclick = function() {
if(clickedOutsideElement('divTest'))
alert('Outside the element!');
else
alert('Inside the element!');
}
function clickedOutsideElement(elemId) {
var theElem = getEventTarget(window.event);
while(theElem = theElem.offsetParent) {
if(theElem.id == elemId)
return false;
}
return true;
}
function getEventTarget(evt) {
var targ = (evt.target) ? evt.target : evt.srcElement;
if(targ && targ.nodeType == 3)
targ = targ.parentNode;
return targ;
}
Put a transparent div that covers whole the page and lies under your dropdown. At that div's click event hiğde your dropdown.
Related
It is showing warning that 'keymanweb.setKeyboardForControl' cannot set keyboard on iframes.
I want to manually set specific language of keyman on iframe element.
Please help me out to achieve the same.
While keymanweb.setKeyboardForControl cannot be used with iframes, you should be able to use a controlfocused event event to select a keyboard on entry to the control:
keyman.addEventListener('controlfocused', function(eventProperties) {
if(eventProperties.target == myIframe) {
keyman.setActiveKeyboard(...);
}
return true;
});
After a postback, I want my page to have focus on a child control of a gridview, but scroll the page to a different part.
the standard myGridView.Focus(), called on the Page_Load or Page_prerender, insert a
WebForm_AutoFocus('myGridViewClientID');
in the rendered html.
This function move also the scroll not to the required position
Any suggestion?
my try: use some function injected by Asp.NET:
function FocusWithoutScroll(focusId) {
var targetControl;
if (__nonMSDOMBrowser) {
targetControl = document.getElementById(focusId);
}
else {
targetControl = document.all[focusId];
}
var focused = targetControl;
if (targetControl && (!WebForm_CanFocus(targetControl))) {
focused = WebForm_FindFirstFocusableChild(targetControl);
}
if (focused) {
try {
focused.focus();
}
catch (e) {
}
}
}
but in order to use this code, I have to include some .axd resource files: it seems ASP.NET automatically include them when you set
someControl.Focus();
in your server side code. but this in turn insert the
WebForm_AutoFocus('myGridViewClientID');
which scroll the page to the wrong position
There's a client-side method scrollIntoView that scrolls page till the element is visible. You can issue server-side command:
ClientScript.RegisterStartupScript(this.GetType(), "MyScript","document.getElementById('SecondElementID').scrollIntoView();", true);
Where 'SecondElementID' is id of the element you want to scroll to.
Demo: http://jsfiddle.net/v8455c79/ this demo shows how focus can be set on one element and page scrolled to another
I am using a CSS hover trick to clean up my interface. Controls will only be shown when the cursor is hovering inside the element. I'm running into an issue when using the interface on a touch screen device. If the control button is not shown display:none and I touch where it should be, the event is still triggered for the button.
Try this fiddle both in your browser and on a touchscreen device to see what I mean...
http://jsfiddle.net/6PvCn/2/
On a touchscreen device, touch the red square and the alert should fire, without the button even showing up. I tested this on both the desktop Android Emulator and my real Android 2.3 phone.
The effect I'm going for is for the button to first be shown without firing, even if the user touches where the button "is".
I'd rather use a pure CSS solution before resorting to javascript.
Try pointer-events: none; along with display: none;
I just tested it on my real device, and it indeed executes the button's action.
You could maybe try to make the red box an image and change the image to a button by an onclick with Javascript. I would have provided you with some code if I wasn't short on time.
You can't do it with pure CSS, tapping the button will put the button into hover state and fire the click event. Instead you should fire the button off on active.
Here is the solution I came up with... http://jsfiddle.net/6PvCn/7/
On an Android touchscreen (don't know about IOS), the hover event for the hidden element is not fired if it is not shown. So basically I check to see if the element was hovered before it was clicked.
In a nutshell
$(".hidden").hover(function(e) {
if(e.type == "mouseenter") $(this).addClass("hovering");
else $(this).removeClass("hovering");
}).click(function(e) {
if(!$(this).hasClass("hovering") return false;
});
The fiddle explains the more complicated situation I had with form elements and dynamically added content. It provides a general solution as opposed to this element specific one.
I wrote a JS solution for you:
https://codepen.io/anon/pen/bmYROr
The trick is to prevent the button's click event getting fired for the first time the outer div is getting clicked because on touch devices click event has hover effect.
let isTouchDevice = true;
let isHovered = false;
document.getElementById('outer').addEventListener('click', (e) => {
if (isTouchDevice) {
if (!isHovered) {
e.stopPropagation();
}
isHovered = true;
}
}, true);
document.getElementById('outer').addEventListener('mouseleave', (e) => {
if (isTouchDevice) {
isHovered = false;
}
}, true);
document.getElementById('btn').addEventListener('click', () => {
alert("hi");
});
How to catch click on an iframe using JQuery. I have an Amazon banner, and I need to close its container DIV when the user clicks the iframe. I've tried 'contents', onclick on iframe, binding the event but nothing works. When I click the iframe it opens Amazon's page on another tab, but the click event never fires. I put a breakpoint and alert just to make sure.
I am using latest JQuery version 1.9 and tested it on Chrome. I also thought about capturing a global click ($(document).click) and check the area of the click, but when I click the iframe, $(document).click doesn't fire. Any suggestions?
Again, it's an Amazon banner iframe, it's hosted on Amazon not on my server.
Example of the regular on binding that doesn't work: http://jsbin.com/oyanis/4/edit
There is a neat trick to get a "click" on on iframe content.
You could do:
<div id="iframeinside">
<iframe />
</div>
This now makes it possible to say in js something like:
var oldActive = document.activeElement; /* getting active Element */
var frame = $('#iframeinside iframe')[0];
$('#iframeinside').mouseenter(function() {
/* Setting interval to 1ms for getting eventually x,y mouse coords*/
oldActive = document.activeElement;
setInterval('doSomething()', 1);
});
$('#iframeinside').mouseleave(function () {
/* clear interval cause we arent over the element anymore*/
clearInterval(intervalId);
});
These intervals do call:
function doSomething() {
/* if the focus has changed to the iframe */
if(oldActive != frame && document.activeElement == frame) {
oldActive = document.activeElement;
alert(myQuery);
alert('click did happen to the iframe');
}
}
I used this for several things and it always worked. What i didnt check was how about ie6,7 and older brothers.
This tv.ui.button only responds to mouseclick when initially loaded, but then responds to keyboard ENTER or mouseclick after it's been clicked at least once. Do I have something wrong here?
HTML
<div class="tv-button alert-button" id="test-button">Alert button</div>
JS
decorateHandler.addClassHandler('alert-button', function(button) {
goog.events.listen(button, tv.ui.Button.EventType.ACTION,
function() {
alert('Button clicked.');
var elementToFocus = goog.dom.getElement('tab1');
var componentToFocus = tv.ui.getComponentByElement(elementToFocus);
tv.ui.Document.getInstance().setFocusedComponent(componentToFocus);;
});
});
EDIT: it seems this may be a question about javascript, not closure specifically. I'm posting a new question under the appropriate tag
Have you made sure that the button has cursor focus? If not then the "Enter" key event will get handed to the default handler.
Well, I fixed it with a semi hack. i used a $('target').click on the button within $(document).ready, which seems to set the focus as if a click event had actually happened