Before this commit there were a number of situations where events would
not behave as expected, or just be flat out broken.
This commit solidifies the event handling system.
We now support both event delegation and as well attaching events
directly onto DOM nodes.
This is handled transparency to the user, based on the event.
Before thie commit, when patching an element that has events over an
element that did not have events, the new events would be ignored.
This commit ensures that we always update the events in the
EventsByNodeIdx type when we are patching a node.
We also introduce the concept of event delegation, where we can have a
single event handler to handle all occurrences of a type of event.
For example, we might have a single onclick handler attached to the
DomUpdater's mount point that then calls the correct callback by looking
it up in the EventsByNodeIdx.
Over time we'll gain more insight into on which events should be delegated
vs. which events should be attached to DOM nodes.
Before this commit there were a number of situations where events would not behave as expected, or just be flat out broken.
This commit solidifies the event handling system.
We now support both event delegation and as well attaching events directly onto DOM nodes.
This is handled transparency to the user, based on the event.
Before thie commit, when patching an element that has events over an element that did not have events, the new events would be ignored.
This commit ensures that we always update the events in the
EventsByNodeIdxtype when we are patching a node.We also introduce the concept of event delegation, where we can have a single event handler to handle all occurrences of a type of event.
For example, we might have a single onclick handler attached to the DomUpdater's mount point that then calls the correct callback by looking it up in the
EventsByNodeIdx.Over time we'll gain more insight into on which events should be delegated vs. which events should be attached to DOM nodes.