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useActionNavigation.js
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useActionNavigation.js
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const { ref, nextTick } = require( 'vue' );
const { useSearchStore } = require( '../stores/searchStore.js' );
/**
* Composable for handling keyboard navigation and focus within action buttons of a list item.
*
* @param {import('vue').Ref<Array<{id: string}>>} actionsRef Reactive reference to the list of actions for the item.
* @param {import('vue').Ref<Record<string, HTMLElement|null>>} buttonRefs Reactive reference to the object mapping action IDs to DOM elements.
* @param {Function} emit The component's emit function.
* @return {Object} { handleActionButtonKeydown, onButtonFocus, focusFirstButton }
*/
function useActionNavigation( actionsRef, buttonRefs, emit ) {
const searchStore = useSearchStore();
const activeButtonId = ref( null );
/**
* Focuses a button element, handling both Vue components and standard elements.
*
* @param {HTMLElement|{ $el: HTMLElement }} button The button element to focus.
*/
function focusButton( button ) {
if ( button?.$el ) { // For Codex CdxButton
button.$el.focus();
} else if ( typeof button?.focus === 'function' ) { // Fallback for standard elements
button.focus();
}
}
/**
* Clicks a button element, handling both Vue components and standard elements.
*
* @param {HTMLElement|{ $el: HTMLElement }} button The button element to click.
*/
function clickButton( button ) {
if ( button?.$el ) { // For Codex CdxButton
button.$el.click();
} else if ( typeof button?.click === 'function' ) { // Fallback for standard elements
button.click();
}
}
/**
* Focuses the first available action button based on the current order in actionsRef.
*/
function focusFirstButton() {
if ( actionsRef.value && actionsRef.value.length > 0 ) {
const firstActionId = actionsRef.value[ 0 ].id;
if ( firstActionId ) {
nextTick( () => {
const firstButton = buttonRefs.value[ firstActionId ];
if ( firstButton?.$el ) { // For Codex CdxButton
firstButton.$el.focus();
} else if ( typeof firstButton?.focus === 'function' ) { // Fallback for standard elements
firstButton.focus();
}
} );
}
}
}
/**
* Handles keydown events specifically when focus is within the action buttons.
*
* @param {KeyboardEvent} event The keydown event.
* @return {boolean} True if the event was handled, false otherwise.
*/
function handleActionButtonKeydown( event ) {
const currentActionId = activeButtonId.value;
if ( !currentActionId ) {
return false;
}
const actions = actionsRef.value;
const buttons = buttonRefs.value;
const currentButtonIndex = actions.findIndex( ( action ) => action.id === currentActionId );
if ( currentButtonIndex === -1 ) {
return false;
}
const keyAction = {
ArrowLeft: () => {
if ( currentButtonIndex === 0 ) {
emit( 'blur-actions' );
searchStore.triggerFocusSearchInput();
} else {
const prevActionId = actions[ currentButtonIndex - 1 ].id;
focusButton( buttons[ prevActionId ] );
}
return true;
},
ArrowRight: () => {
if ( currentButtonIndex < actions.length - 1 ) {
const nextActionId = actions[ currentButtonIndex + 1 ].id;
focusButton( buttons[ nextActionId ] );
return true;
}
return false;
},
ArrowUp: () => {
emit( 'blur-actions' );
emit( 'navigate-list', event );
searchStore.triggerFocusSearchInput();
return true;
},
ArrowDown: () => keyAction.ArrowUp(),
Enter: () => {
clickButton( buttons[ currentActionId ] );
return true;
},
' ': () => keyAction.Enter(),
Escape: () => {
emit( 'blur-actions' );
return true;
}
};
if ( keyAction[ event.key ] && keyAction[ event.key ]() ) {
event.preventDefault();
event.stopPropagation();
return true;
}
return false;
}
/**
* Updates the ID of the currently focused action button and emits focus event.
* Should be called from the button's focus handler.
*
* @param {string} actionId The ID of the action button that received focus.
*/
function onButtonFocus( actionId ) {
activeButtonId.value = actionId;
const actions = actionsRef.value;
const index = actions.findIndex( ( action ) => action.id === actionId );
const isFirst = index === 0;
emit( 'focus-action', { isFirst: isFirst, index: index } );
}
return {
handleActionButtonKeydown,
onButtonFocus,
focusFirstButton
};
}
module.exports = useActionNavigation;

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