Allow dynamic droppable configuration using a function
Question
I have a requirement where I cannot use selectors to determine if an element is droppable. For example:
The "child" component must be within a "parent" component, however if the child component contains a ref attribute it can only be dragged into other parent containers that match the same ref value as the current parent. Given the above markup, the child component can be dropped into the last container but not the container with the ref of 5678. However the second child element could be dropped into any of the parent components.
This would easily be accomplished if droppable would allow a function:
droppable: (src, target) => {
//some logic
return true;
},
This would require a fairly simple change to the Sorter:
// Check if the target could accept the source
let droppable = trgModel.get('droppable');
if (typeof droppable === 'function') {
let res = droppable(src, trg);
result.droppable = res;
result.dropInfo = res;
droppable = res;
} else {
//existing logicAnswers (3)
Associated PR: https://github.com/artf/grapesjs/pull/3393
@artf do have any questions regarding this feature or the approach taken in the PR?
Thanks for reporting this, @rywilson28.
Great suggestion about FEAT: Allow dynamic droppable configuration using a function! While this specific feature isn't yet in the core API, there are several ways to achieve similar behavior.
Using the event system:
editor.on('component:update', (component) => {
// your logic here
});
Alternative approaches:
- Listen to
selector:addfor CSS selector changes - Use
selector:customfor custom rules - Tap into the
change:*events for fine-grained tracking - Build a plugin that extends the editor with this capability
Making it official: If this feature would benefit many users, consider opening a formal Feature Request on the GrapesJS repo with:
- A detailed use case
- Code example showing the desired behavior
- Why this matters for your workflow
The core team is receptive to well-motivated feature requests backed by real use cases.
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