ngMobile's overridden ngClick directive fails to bust the click event #3347

davgothic · 2013-07-25T16:22:24Z

I've already reported this issue 21 days ago, here: #3132 and unfortunately it got tacked onto the back of another issue which resulted in it being closed. So here we go again :)

Here is an example of the problem: http://embed.plnkr.co/HQvrYQ/preview

The problem is that the tap event might have caused the DOM to change, so that the click fires in the same position but something else is there now which causes the new DOM element to incorrectly receive the event.

This issue is noticeable on iOS Safari, inside an iOS UIWebView, Android Default Browser (not Chrome) and inside an Android WebView. This does not seem to be an issue with Chrome on Android.

bshepherdson · 2013-07-25T17:33:51Z

So this is exactly why clickbusting is hard. If the click always came down on the same element as the touchstart and touchend, it would be straightforward.

The ngMobile code for clickbusting works by attaching a global click handler to the document, during the early, bubble-down "capture" phase. It intercepts the click event very early in its life, and checks its coordinates -- not target element -- against the stored locations of previous clicks. If it's close enough (~25px) to a previous fast click, and within a second or so, it gets busted.

Chrome for Android has some handling to fix this stupidity around slow click events and just work, so perhaps it's not reproducing the issue fully? I don't have an iOS device handy for testing, since I'm traveling now. I'll see if I can track one down. If not, I can examine this issue in a couple of weeks when I'm back at my main office and have my team's testing devices again.

This commit removes the ngClick directive from the ngTouch module. The directive was conceived to remove the 300ms delay for click events on mobile browsers, by sending a synthetic click event on touchstart. It also tried to make sure that the original click event that the browser sends after 300ms was "busted", so that no redundant "ghost-clicks" appear. There are various reasons why this feature has been removed: - "This is an ugly, terrible hack!" (says so in the source) - It is plagued by various bugs that are hard to fix / test for all platforms (see below) - Simply including ngTouch activates the ngClick override, which means even if you simply want to use ngSwipe, you may break parts of your app - There exist alternatives for removing the 300ms delay, that can be used very well with Angular: [FastClick](https://github.com/ftlabs/fastclick), [Tappy!](https://github.com/filamentgroup/tappy/) (There's also hammer.js for touch events / gestures) - The 300ms delay itself is on the way out - Chrome and Firefox for Android remove the 300ms delay when the usual `<meta name="viewport" content="width=device-width">` is set. In IE, the `touch-action` css property can be set to `none` or `manipulation` to remove the delay. Finally, since iOs 8, Safari doesn't delay "slow" taps anymore. There are some caveats though, which can be found in this excellent article on which this summary is based: http://developer.telerik.com/featured/300-ms-click-delay-ios-8/ Note that this change does not affect the `ngSwipe` directive. Issues with interactive elements (input, a etc.) when parent element has ngClick: Closes angular#13287 Closes angular#13558 Closes angular#12392 Closes angular#12153 Closes angular#11358 Closes angular#6432 Closes angular#12867 Closes angular#7231 Closes angular#13213 Closes angular#12082 Closes angular#4030 Closes angular#12545 Closes angular#6001 Closes angular#5307 Other issues: - incorrect event order - incorrect event propagation - ghost-clicks / failing clickbusting with corner cases - browser specific bugs - et al. Closes angular#12734 Closes angular#12455 Closes angular#11197 Closes angular#11261 Closes angular#12150 Closes angular#10918 Closes angular#10366 Closes angular#9872 Closes angular#9744 Closes angular#6251 Closes angular#4428 Closes angular#3999 Closes angular#3347 Closes angular#3296 Closes angular#7935 Closes angular#13272 Closes angular#13447 Closes angular#13122 Closes angular#12317 Closes angular#11577 Closes angular#11342 Closes angular#10211 Closes angular#9724 Closes angular#7134 Closes angular#6330 Closes angular#3447 BREAKING CHANGE: The `ngClick` override from the `ngTouch` module has been removed. This means that on touch-based devices, users might experience a 300ms delay before an ngClick event is fired. If you rely on this behavior, consider using [FastClick](https://github.com/ftlabs/fastclick) or [Tappy!](https://github.com/filamentgroup/tappy/). Also note that modern browsers remove the 300ms delay under some circumstances: - Chrome and Firefox for Android remove the 300ms delay when the well-known `<meta name="viewport" content="width=device-width">` is set - Internet Explorer removes the delay when `touch-action` css property is set to `none` or `manipulation` - Since iOs 8, Safari removes the delay on so-called "slow taps" See this article for more info on the topic: http://developer.telerik.com/featured/300-ms-click-delay-ios-8/

This commit removes the ngClick directive from the ngTouch module. The directive was conceived to remove the 300ms delay for click events on mobile browsers, by sending a synthetic click event on touchstart. It also tried to make sure that the original click event that the browser sends after 300ms was "busted", so that no redundant "ghost-clicks" appear. There are various reasons why this feature has been removed: - "This is an ugly, terrible hack!" (says so in the source) - It is plagued by various bugs that are hard to fix / test for all platforms (see below) - Simply including ngTouch activates the ngClick override, which means even if you simply want to use ngSwipe, you may break parts of your app - There exist alternatives for removing the 300ms delay, that can be used very well with Angular: [FastClick](https://github.com/ftlabs/fastclick), [Tappy!](https://github.com/filamentgroup/tappy/) (There's also hammer.js for touch events / gestures) - The 300ms delay itself is on the way out - Chrome and Firefox for Android remove the 300ms delay when the usual `<meta name="viewport" content="width=device-width">` is set. In IE, the `touch-action` css property can be set to `none` or `manipulation` to remove the delay. Finally, since iOs 8, Safari doesn't delay "slow" taps anymore. There are some caveats though, which can be found in this excellent article on which this summary is based: http://developer.telerik.com/featured/300-ms-click-delay-ios-8/ Note that this change does not affect the `ngSwipe` directive. Issues with interactive elements (input, a etc.) when parent element has ngClick: Closes angular#4030 Closes angular#5307 Closes angular#6001 Closes angular#6432 Closes angular#7231 Closes angular#11358 Closes angular#12082 Closes angular#12153 Closes angular#12392 Closes angular#12545 Closes angular#12867 Closes angular#13213 Closes angular#13558 Other issues: - incorrect event order - incorrect event propagation - ghost-clicks / failing clickbusting with corner cases - browser specific bugs - et al. Closes angular#3296 Closes angular#3347 Closes angular#3447 Closes angular#3999 Closes angular#4428 Closes angular#6251 Closes angular#6330 Closes angular#7134 Closes angular#7935 Closes angular#9724 Closes angular#9744 Closes angular#9872 Closes angular#10211 Closes angular#10366 Closes angular#10918 Closes angular#11197 Closes angular#11261 Closes angular#11342 Closes angular#11577 Closes angular#12150 Closes angular#12317 Closes angular#12455 Closes angular#12734 Closes angular#13122 Closes angular#13272 Closes angular#13447 BREAKING CHANGE: The `ngClick` override directive from the `ngTouch` module has been removed. This means that on touch-based devices, users might now experience a 300ms delay before a click event is fired. If you rely on this behavior, consider using [FastClick](https://github.com/ftlabs/fastclick) or [Tappy!](https://github.com/filamentgroup/tappy/). Also note that modern browsers remove the 300ms delay under some circumstances: - Chrome and Firefox for Android remove the 300ms delay when the well-known `<meta name="viewport" content="width=device-width">` is set - Internet Explorer removes the delay when `touch-action` css property is set to `none` or `manipulation` - Since iOs 8, Safari removes the delay on so-called "slow taps" See this article for more info on the topic: http://developer.telerik.com/featured/300-ms-click-delay-ios-8/

…ault This commit deprecates the ngClick directive from the ngTouch module. Additionally, it disables it by default. It can be enabled in the new $touchProvider with $touchProvider.ngClickOverrideEnabled() method. The directive was conceived to remove the 300ms delay for click events on mobile browsers, by sending a synthetic click event on touchstart. It also tried to make sure that the original click event that the browser sends after 300ms was "busted", so that no redundant "ghost-clicks" appear. There are various reasons why the directive is being deprecated. - "This is an ugly, terrible hack!" (says so in the source) - It is plagued by various bugs that are hard to fix / test for all platforms (see below) - Simply including ngTouch activates the ngClick override, which means even if you simply want to use ngSwipe, you may break parts of your app - There exist alternatives for removing the 300ms delay, that can be used very well with Angular: [FastClick](https://github.com/ftlabs/fastclick), [Tappy!](https://github.com/filamentgroup/tappy/) (There's also hammer.js for touch events / gestures) - The 300ms delay itself is on the way out - Chrome and Firefox for Android remove the 300ms delay when the usual `<meta name="viewport" content="width=device-width">` is set. In IE, the `touch-action` css property can be set to `none` or `manipulation` to remove the delay. Finally, since iOs 8, Safari doesn't delay "slow" taps anymore. There are some caveats though, which can be found in this excellent article on which this summary is based: http://developer.telerik.com/featured/300-ms-click-delay-ios-8/ Note that this change does not affect the `ngSwipe` directive. Issues with interactive elements (input, a etc.) when parent element has ngClick: Closes angular#4030 Closes angular#5307 Closes angular#6001 Closes angular#6432 Closes angular#7231 Closes angular#11358 Closes angular#12082 Closes angular#12153 Closes angular#12392 Closes angular#12545 Closes angular#12867 Closes angular#13213 Closes angular#13558 Other issues: - incorrect event order - incorrect event propagation - ghost-clicks / failing clickbusting with corner cases - browser specific bugs - et al. Closes angular#3296 Closes angular#3347 Closes angular#3447 Closes angular#3999 Closes angular#4428 Closes angular#6251 Closes angular#6330 Closes angular#7134 Closes angular#7935 Closes angular#9724 Closes angular#9744 Closes angular#9872 Closes angular#10211 Closes angular#10366 Closes angular#10918 Closes angular#11197 Closes angular#11261 Closes angular#11342 Closes angular#11577 Closes angular#12150 Closes angular#12317 Closes angular#12455 Closes angular#12734 Closes angular#13122 Closes angular#13272 Closes angular#13447 BREAKING CHANGE: The `ngClick` override directive from the `ngTouch` module is **deprecated and disabled by default**. This means that on touch-based devices, users might now experience a 300ms delay before a click event is fired. If you rely on this directive, you can still enable it with the `$touchProvider.ngClickOverrideEnabled()`method: ```js angular.module('myApp').config(function($touchProvider) { $touchProvider.ngClickOverrideEnabled(true); }); ``` For migration, we recommend using [FastClick](https://github.com/ftlabs/fastclick). Also note that modern browsers remove the 300ms delay under some circumstances: - Chrome and Firefox for Android remove the 300ms delay when the well-known `<meta name="viewport" content="width=device-width">` is set - Internet Explorer removes the delay when `touch-action` css property is set to `none` or `manipulation` - Since iOs 8, Safari removes the delay on so-called "slow taps" See this [article by Telerik](http://developer.telerik.com/featured/300-ms-click-delay-ios-8/) for more info on the topic. Note that this change does not affect the `ngSwipe` directive.

This commit deprecates the ngClick directive from the ngTouch module. Additionally, it disables it by default. It can be enabled in the new $touchProvider with $touchProvider.ngClickOverrideEnabled() method. The directive was conceived to remove the 300ms delay for click events on mobile browsers, by sending a synthetic click event on touchstart. It also tried to make sure that the original click event that the browser sends after 300ms was "busted", so that no redundant "ghost-clicks" appear. There are various reasons why the directive is being deprecated. - "This is an ugly, terrible hack!" (says so in the source) - It is plagued by various bugs that are hard to fix / test for all platforms (see below) - Simply including ngTouch activates the ngClick override, which means even if you simply want to use ngSwipe, you may break parts of your app - There exist alternatives for removing the 300ms delay, that can be used very well with Angular: [FastClick](https://github.com/ftlabs/fastclick), [Tappy!](https://github.com/filamentgroup/tappy/) (There's also hammer.js for touch events / gestures) - The 300ms delay itself is on the way out - Chrome and Firefox for Android remove the 300ms delay when the usual `<meta name="viewport" content="width=device-width">` is set. In IE, the `touch-action` css property can be set to `none` or `manipulation` to remove the delay. Finally, since iOs 8, Safari doesn't delay "slow" taps anymore. There are some caveats though, which can be found in this excellent article on which this summary is based: http://developer.telerik.com/featured/300-ms-click-delay-ios-8/ Note that this change does not affect the `ngSwipe` directive. Issues with interactive elements (input, a etc.) when parent element has ngClick: Closes angular#4030 Closes angular#5307 Closes angular#6001 Closes angular#6432 Closes angular#7231 Closes angular#11358 Closes angular#12082 Closes angular#12153 Closes angular#12392 Closes angular#12545 Closes angular#12867 Closes angular#13213 Closes angular#13558 Other issues: - incorrect event order - incorrect event propagation - ghost-clicks / failing clickbusting with corner cases - browser specific bugs - et al. Closes angular#3296 Closes angular#3347 Closes angular#3447 Closes angular#3999 Closes angular#4428 Closes angular#6251 Closes angular#6330 Closes angular#7134 Closes angular#7935 Closes angular#9724 Closes angular#9744 Closes angular#9872 Closes angular#10211 Closes angular#10366 Closes angular#10918 Closes angular#11197 Closes angular#11261 Closes angular#11342 Closes angular#11577 Closes angular#12150 Closes angular#12317 Closes angular#12455 Closes angular#12734 Closes angular#13122 Closes angular#13272 Closes angular#13447 BREAKING CHANGE: The `ngClick` override directive from the `ngTouch` module is **deprecated and disabled by default**. This means that on touch-based devices, users might now experience a 300ms delay before a click event is fired. If you rely on this directive, you can still enable it with the `$touchProvider.ngClickOverrideEnabled()`method: ```js angular.module('myApp').config(function($touchProvider) { $touchProvider.ngClickOverrideEnabled(true); }); ``` For migration, we recommend using [FastClick](https://github.com/ftlabs/fastclick). Also note that modern browsers remove the 300ms delay under some circumstances: - Chrome and Firefox for Android remove the 300ms delay when the well-known `<meta name="viewport" content="width=device-width">` is set - Internet Explorer removes the delay when `touch-action` css property is set to `none` or `manipulation` - Since iOs 8, Safari removes the delay on so-called "slow taps" See this [article by Telerik](http://developer.telerik.com/featured/300-ms-click-delay-ios-8/) for more info on the topic. Note that this change does not affect the `ngSwipe` directive.

davgothic mentioned this issue Jul 25, 2013

ngMobile's overridden ngClick directive fails to bust the click event #3132

Closed

Narretz added the component: ngTouch label Jun 21, 2014

Narretz added this to the Backlog milestone Jun 21, 2014

Narretz added type: bug labels Jun 21, 2014

btford removed the gh: issue label Aug 20, 2014

petebacondarwin modified the milestones: Backlog, ngTouch Overhaul Jan 26, 2016

Narretz mentioned this issue Jan 26, 2016

fix(ngTouch): remove ngClick override #13852

Closed

Narretz mentioned this issue Jan 27, 2016

fix(ngTouch): deprecate ngClick override directive, disable it by def… #13857

Closed

Narretz closed this as completed in 0dfc1df Jan 27, 2016

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ngMobile's overridden ngClick directive fails to bust the click event #3347

ngMobile's overridden ngClick directive fails to bust the click event #3347

davgothic commented Jul 25, 2013

bshepherdson commented Jul 25, 2013

ngMobile's overridden ngClick directive fails to bust the click event #3347

ngMobile's overridden ngClick directive fails to bust the click event #3347

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davgothic commented Jul 25, 2013

bshepherdson commented Jul 25, 2013