How can I make angular bootstrap collapse, collapsing horizontally? Something like here?
You are going to need to either modify the collapse directive or create a new directive based on that to handle collapsing the width only. I would suggest the latter unless you want all of the collapse directives in your app to collapse horizontally.
Please see the Plunk here demonstrating the use of a collapse-with
directive based on the bootstrap collapse directive.
On top of changing the directive you will need to add new classes to handle the transition and set a width for the element you want to collapse (you could also change the directive to collapse to and from 100% width, not sure on your use case but hopefully you get the idea):
.well {
width: 400px;
}
.collapsing-width {
position: relative;
overflow: hidden;
-webkit-transition: width 0.35s ease;
-moz-transition: width 0.35s ease;
-o-transition: width 0.35s ease;
transition: width 0.35s ease;
}
And the directive just requires a few changes to the expand
, expandDone
, collapse
and collapseDone
functions and adding/removing the css class above as follows:
.directive('collapseWidth', ['$transition', function ($transition, $timeout) {
return {
link: function (scope, element, attrs) {
var initialAnimSkip = true;
var currentTransition;
function doTransition(change) {
var newTransition = $transition(element, change);
if (currentTransition) {
currentTransition.cancel();
}
currentTransition = newTransition;
newTransition.then(newTransitionDone, newTransitionDone);
return newTransition;
function newTransitionDone() {
// Make sure it's this transition, otherwise, leave it alone.
if (currentTransition === newTransition) {
currentTransition = undefined;
}
}
}
function expand() {
if (initialAnimSkip) {
initialAnimSkip = false;
expandDone();
} else {
element.removeClass('collapse').addClass('collapsing-width');
doTransition({ width: element[0].scrollWidth + 'px' }).then(expandDone);
}
}
function expandDone() {
element.removeClass('collapsing-width');
element.addClass('collapse in');
element.css({width: 'auto'});
}
function collapse() {
if (initialAnimSkip) {
initialAnimSkip = false;
collapseDone();
element.css({width: 0});
} else {
// CSS transitions don't work with height: auto, so we have to manually change the height to a specific value
element.css({ width: element[0].scrollWidth + 'px' });
//trigger reflow so a browser realizes that height was updated from auto to a specific value
var x = element[0].offsetHeight;
element.removeClass('collapse in').addClass('collapsing-width');
doTransition({ width: 0 }).then(collapseDone);
}
}
function collapseDone() {
element.removeClass('collapsing-width');
element.addClass('collapse');
}
scope.$watch(attrs.collapseWidth, function (shouldCollapse) {
if (shouldCollapse) {
collapse();
} else {
expand();
}
});
}
};
}]);
You may need to tweak the css a little to ensure the spacing and margins are consistent with your use cases but hopefully that helps.
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With