ngAnimate max-height无法处理某些元素

Question

I've implemented ngAnimate into a project to help with animations, but I'm getting really odd behaviour with a certain element.

To add some background, we have a shop with categories and products inside the categories. I'm doing an ng-repeat with: data-ng-repeat="product in currentProductCategory.Products" and I have data-ng-class="{ 'open': product.ShowDetails == true }" on my root element.

My root element also has an id of product-{{product.Id}}-{{currentProductCategory.Id}} and I have a child element with id product-options-{{product.Id}}-{{currentProductCategory.Id}} which products expected results.

When clicking a button, I call a function that sets the max-height on the parent element to a desired height, and the animation is handled in the CSS. Here's the function code:

var reg = /\d+/g;
var productParentElement = $('#product-' + product.Id + '-' + $scope.currentProductCategory.Id);
var optionsElement = $('#product-options-' + product.Id + '-' + $scope.currentProductCategory.Id);

var productParentPaddingTop = parseInt(productParentElement.css("padding-top").match(reg));
var productParentPaddingBottom = parseInt(productParentElement.css("padding-bottom").match(reg));
var productParentTotalHeight = productParentPaddingTop + productParentPaddingBottom + productParentElement.height() + optionsElement.height();

var optionsElementPaddingTop = parseInt(optionsElement.css("padding-top").match(reg));
var optionsElementPaddingBottom = parseInt(optionsElement.css("padding-bottom").match(reg));
var optionsElementTotalHeight = optionsElementPaddingTop + optionsElementPaddingBottom + optionsElement.height();

var totalHeight = productParentTotalHeight + optionsElementTotalHeight;

if (product.ShowDetails) {
    product.ShowDetails = true;
    productParentElement.css("max-height", totalHeight);
} else {
    product.ShowDetails = false;
    productParentElement.removeAttr('style');
}

And my CSS for the closed and open classes:

Closed:

.products-list .product {
    margin-bottom: 20px;
    max-height: 200px;
    overflow: hidden;
    -moz-transition: max-height 2s ease;
    -o-transition: max-height 2s ease;
    -webkit-transition: max-height 2s ease;
    transition: max-height 2s ease;
}

Open:

.products-list .product.open {
    -moz-transition: max-height 2s ease;
    -o-transition: max-height 2s ease;
    -webkit-transition: max-height 2s ease;
    transition: max-height 2s ease;
    max-height: 200px;
}

The issue is that out of the many products over 4 categories, the same one which is the same product in each category is not animating open. It animates the close/shrink, but when opening, it just instantly appears open.

This has been gating on us for a long time now and it's becoming a real issue, any help is greatly appreciated.

UPDATE: Now none of the "products" will animate open, but they do animate closed. Could this be because I'm setting the max-height on the style rather than a class?

Answer 1

Sorry but this might sound like I am pointing out the obvious and I can't see the rest of your code but in your CSS, you have;

.products-list .product {
    margin-bottom: 20px;
    max-height: 200px;
    overflow: hidden;
    -moz-transition: max-height 2s ease;
    -o-transition: max-height 2s ease;
    -webkit-transition: max-height 2s ease;
    transition: max-height 2s ease;
}

for your closed list which has a 'max-height: 200px' but is also the same in your open list;

.products-list .product.open {
    -moz-transition: max-height 2s ease;
    -o-transition: max-height 2s ease;
    -webkit-transition: max-height 2s ease;
    transition: max-height 2s ease;
    max-height: 200px;
}

Which also has a max-height of 200px. So in this case you're asking it to transition from 200px to 200px. try changing the height of open classes to be bigger or smaller. Then it will transition.