I am trying to prevent the default cursor style for dragging in Dart. In the onDragStart method, I set the cursor style to 'move', and then revert back to the default in onDragEnd:
onDragStart(e) {
prevCursor = placeholder.style.cursor;
placeholder.style.cursor = 'move';
}
onDragEnd(e) {
placeholder.style.cursor = prevCursor;
}
When dragging, the cursor still defaults to the 'not-allowed' style. I have tried many methods to prevent this, such as preventing the default to onSelectStart in the onDragStart method, which was recommended as a fix for chromium in javascript, but does not work in Dart:
document.onSelectStart.listen( (e) {
e.preventDefault();
return false;
});
I have also tried setting the default in CSS, which is not how I would like to accomplish this, but it still doesn't work:
a:drag {
cursor:move;
}
Any suggestions?
Hmm...just a guess but maybe try to see if maybe you need to also handle onDragEnter?
The drop target sets the cursor icon to "not allowed", if its handlers canceled drag enter event etc.
Writing the handlers for the drop-zone is the easiest solution.
To circumvent the issue,a mouse down event, mouse move event and so on may be captured and used to move the element like I did here:Moving elements by dragging in Dart
This guy explains the related issue in more detail: http://mereskin.github.io/dnd/
Sort of irrelevant, but with some browsers only use the default cursor icon is available while dragging an element and there is no way to change that default.
Related
Please have a look at
www.jsbin.com/wigokojina/1/edit?html,css,js,output
I've added custom svg icons to the konva transformer, but the middle rotator icon is draggable even if i set draggable to false. The two other icons are fine and as expected, as far as dragging is concerned.
My questions are:
How do i disable the dragging for the rotator anchor, so that the icon doesnt move?
How do i disable all event handlers for an anchor, and add one click event? Ive tried shape.off('dragmove') etc. The only thing that helps is setting listening to false, but then im prevented from adding a new event listener. I want to disable all event handlers for the top right anchor, and add one onclick listener afterwards.
Is it possible to add the icons to the shape itself using fillPatternImage? Instead of adding the icon as a new shape like im doing. If its possible, please provide an example using the jsbin.
Thanks very much :-)
At the current moment konva#4.0.16 doesn't support fully customized Konva.Transformer. But you are making a good attempt.
How do i disable the dragging for the rotator anchor, so that the icon doesn't move at all?
You can reset the position in transform event (almost as you do it). But at the current moment, for performance reasons, inside transform events all anchors has "old" positions. So you see dragging of the icon from rotater anchor. To fix the issue we can force update a transformer:
circle.on('transform', function(){
transformer.update();
for (var button in buttons) {
var selector = button.replace('_', '-');
var shape = transformer.findOne('.' + selector);
var icon = transformer.findOne('.' + selector + '-icon');
icon.position(shape.position());
icon.x(icon.x() - 5.25); icon.y(icon.y() - 5.25);
layer.batchDraw();
}
});
How do I disable all event handlers for an anchor, and add one-click event
It can be something like this:
shape.listening(false);
icon.on('click', () => {
alert('delete');
});
Demo: https://jsbin.com/galetahara/4/edit?js,output
I'm trying to enable Mouse Wheel Zoom only when the map is focused. I've made the container div focusable, added relevant click handlers to options for focusing manually (highcharts prevents the default action), and added onfocus and onblur handlers to container div. Inside these handlers I try to update map options to enable mouse wheel zoom.
The problem is, when I update anything inside 'mapNavigation' section, it does not work. I've tried manually update and then check options of a chart, and see this weird behavior.
I guess HighCharts apply a generic option filtering on update function and somehow missed supporting MapNavigation of HighMaps. Or am I doing something wrong, here is my update call:
this.chart.update({
'mapNavigation': {
'enableMouseWheelZoom': true
}
});
Note: this variable is correct, chart is really the chat I'm dealing with. Updating something else (e.g. credits) works.
iOS5+ shows next/prev buttons above the keyboard:
Because they change the focused element on the page, they can cause issues with my single page app's layout. The 'tab' key on normal keyboards can cause similar issues, but I can slightly change its functionality to only cycle around the inputs I want with a custom keydown event.
Is there any way to do something similar for those buttons?
I'm not really sure what your problem is.
My guess is that when you change focus with "Previous" and "next" button, something goes wrong with your design. And I'm also guessing that you click these when you are in an input (although it's pretty obvious).
When you change from an input to another (With tab key, using "previous/next"-buttons or by mouse), a blur event is triggered.
Now, you don't say what library, if any, you are using. But the fix is similar all around I would say.
if you use jQuery, do something similar to this:
//Selects all input elements, and binds a anonymous function to them. This function
//is run when the blur event is triggered, meaning when we change focus to something else
$("input").on("blur", function () { //Or live, depending on jQuery version
//Your code here, that I assume you already have
});
I am trying to set up a JQuery Mobile 1.3 site that uses a panel and a slider.
Problem is, that using the slider triggers the panel, which opens on a "swiperight" event, as I am moving the slider to the right. The slider will be for pagination, the panel for a menu.
Code here:
http://jsfiddle.net/kMARn/1/
Move the slider to the right and the panel will open.
I have tried using the .not() selector for the panel to not react on the slider:
$(document).not("#slider").on("swiperight", function(event, ui) {
$("#myPanel").panel("open");
});
But it won't work, the panel opens when i move the slider to the right. Tried a bunch of variants too, but I'm lost...
Any ideas?
Thanks!
A bit late to the party, but you can disable swipe-to-close by setting the data-swipe-close attribute to "false" on the panel div.
http://jquerymobile.com/demos/1.3.0-beta.1/docs/panels/options.html
In my case I used this simple code, without data-swipe-close = "false" in panel.
Keeping panel close with swipe right, outside of the slider.
$('#panel').find('#slider')
.on('slidestop',function(e,ui) {
var value = e.target.value;
//...operations with slider value...
})
.parent().on('swiperight',function(e,ui) {
e.stopPropagation(); //block panel close
})
From the 1.3.0b1 Docs for Swipe:
"Triggers when a horizontal drag of 30px or more (and less than 75px
vertically) occurs within 1 second duration"
This applies to and can be configured for swiperight too. You can make the slider small in length and this would ensure that both the slider event stop and the swipe are not triggered at the same time, yet that may not be practical for all scenarios.
What might be better is to bind the swipe right to a DIV or section of the page. By this, I mean if you have a 75 px div box on the left hand side of the display, and when a swipe event occurred within that div, it could trigger the menu.
I feel the logic here might be better controlled by a button, much like used in the Facebook App to display there slide out menu. In the Dolphin browser on Android, this type of event also triggers a bookmark menu, so if a page has a swiperight event and trigger it, I sometimes get both the event and the bookmark menu from the App. Annoying!
I did fork your jsfiddle and will play with it more (http://jsfiddle.net/Twisty/Hg2pw/). FYI, they have JQM 1.3.0b1 in their available frameworks so you don't have to link it in your HTML. If I find some more info, I will comment here.
The following solution is more a workaround. It should be relatively reliable though.
$(document).ready( function () {
var menu_available = true;
$(document).on("swiperight", function(event, ui) {
if (menu_available) $("#myPanel").panel("open");
});
$("#slider").on("slidestop", function( event, ui ) {
menu_available = false;
window.setTimeout(function() {menu_available= true;},250);
});
});
The variable menu_available is false for a 250 milliseconds right after the slide stops. The window.setTimeout block will reset the variable so that the menu is available again.
This is a stupid workaround, but jQuerys function event.stopEventPropagation(), which IMHO would be the correct way to go, didn't work.
I'm using jQueryUI Accordion, and genereate the elements on the fly. I need to prevent accordion expanding if we click Remove action link inside the header.
To stop further handlers from executing after one bound using .live(), the handler must return false. Calling .stopPropagation() will not accomplish this.
No luck with return false. Please see the demo.
I don't think you will have too much luck achieving what you want with live(), as jQuery only supports event bubbling and not event capturing. The design decision was probably due to the fact the IE does not support event capturing, even though W3C's speicification has the flexibility for both.
Your best bet is to attach a click event to the remove button right after it is inserted into the DOM (to stop the event propagation) before you re-initiate the accordion. You may need to take care not to bind click event to the existing remove buttons multiple times.
The pseudocode would look something like this:
call .accordion('destory') on the current accordion
create the new element, i.e. <h2>...<a class="revmoe">...</a></h2><div>...</div>
insert the new element to the existing accordion
bind a click event to the remove button in the new element to stop event propagation
initiate the accordion, i.e. .accordion({..})
SO posts on event capturing in jQuery:
event capturing with jQuery
Event Capturing vs Event Bubbling
Just use the given functions by the plugin:
$('#accordion').accordion({active:8, disabled:true});
jQuery('.remove').click(function(){
$('#accordion').accordion('disable');
})
I chose the option "active:8" because this way no header is opened from the beginning (index -1 does not work for IE). Check the function and options out at: http://docs.jquery.com/UI/Accordion
Hope this is what you were looking for :-)