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3x 3x 3x 3x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 2x 2x 1x 1x 1x 1x 2x 2x 2x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | /**
* Client-side hydration utilities for Coherent.js
*
* This module provides utilities for hydrating server-rendered HTML
* with client-side interactivity.
*/
// Store for component instances
const componentInstances = new WeakMap();
/**
* Extract initial state from DOM element data attributes
*
* @param {HTMLElement} element - The DOM element
* @param {Object} options - Hydration options
* @returns {Object|null} The initial state or null
*/
function extractInitialState(element, options = {}) {
// Check if we're in a browser environment
if (typeof window === 'undefined') {
return options.initialState || null;
}
// Check if element has getAttribute method
if (!element || typeof element.getAttribute !== 'function') {
return options.initialState || null;
}
try {
// Look for data-coherent-state attribute
const stateAttr = element.getAttribute('data-coherent-state');
if (stateAttr) {
return JSON.parse(stateAttr);
}
// Look for specific state attributes
const state = {};
let hasState = false;
// Extract common state patterns
const countAttr = element.getAttribute('data-count');
if (countAttr !== null) {
state.count = parseInt(countAttr, 10) || 0;
hasState = true;
}
const stepAttr = element.getAttribute('data-step');
if (stepAttr !== null) {
state.step = parseInt(stepAttr, 10) || 1;
hasState = true;
}
const todosAttr = element.getAttribute('data-todos');
if (todosAttr) {
state.todos = JSON.parse(todosAttr);
hasState = true;
}
const valueAttr = element.getAttribute('data-value');
if (valueAttr !== null) {
state.value = valueAttr;
hasState = true;
}
// Check for initial props in options
if (options.initialState) {
return { ...options.initialState, ...state };
}
return hasState ? state : null;
} catch (error) {
console.warn('Error extracting initial state:', error);
return options.initialState || null;
}
}
/**
* Hydrate a DOM element with a Coherent component
*
* @param {HTMLElement} element - The DOM element to hydrate
* @param {Function} component - The Coherent component function
* @param {Object} props - The props to pass to the component
* @param {Object} options - Hydration options
* @returns {Object} The hydrated component instance
*/
function hydrate(element, component, props = {}, options = {}) {
// Hydration process initiated
if (typeof window === 'undefined') {
console.warn('Hydration can only be performed in a browser environment');
return null;
}
// Check if element is already hydrated
if (componentInstances.has(element)) {
const existingInstance = componentInstances.get(element);
return existingInstance;
}
// Extract initial state from data attributes if available
const initialState = extractInitialState(element, options);
// Create component instance with state management
const instance = {
element,
component,
props: {...props},
state: initialState,
isHydrated: true,
eventListeners: [],
options: {...options},
previousVirtualElement: null,
// Update method for re-rendering
update(newProps) {
this.props = { ...this.props, ...newProps };
this.rerender();
return this; // Return instance for chaining
},
// Re-render the component with current state
rerender() {
try {
// Always use the fallback patching method to preserve hydration
this.fallbackRerender();
} catch (error) {
console.error('Error during component re-render:', error);
}
},
// Fallback re-render method using existing patching
fallbackRerender() {
try {
// Call the component function with current props and state
const componentProps = { ...this.props, ...(this.state || {}) };
const newVirtualElement = this.component(componentProps);
// Store the previous virtual element for comparison
if (!this.previousVirtualElement) {
this.previousVirtualElement = this.virtualElementFromDOM(this.element);
}
// Perform intelligent DOM diffing and patching
this.patchDOM(this.element, this.previousVirtualElement, newVirtualElement);
// Re-attach event listeners for input elements only
attachFunctionEventListeners(this.element, newVirtualElement, this, { inputsOnly: true });
// Store the new virtual element for next comparison
this.previousVirtualElement = newVirtualElement;
// Component re-rendered successfully with fallback
} catch (error) {
console.error('Error during component re-render (fallback):', error);
}
},
// Create virtual element representation from existing DOM
virtualElementFromDOM(domElement) {
// Check if we're in a browser environment
if (typeof window === 'undefined' || typeof Node === 'undefined') {
return null;
}
if (domElement.nodeType === Node.TEXT_NODE) {
return domElement.textContent;
}
if (domElement.nodeType !== Node.ELEMENT_NODE) {
return null;
}
const tagName = domElement.tagName.toLowerCase();
const props = {};
const children = [];
// Extract attributes
if (domElement.attributes) {
Array.from(domElement.attributes).forEach(attr => {
const name = attr.name === 'class' ? 'className' : attr.name;
props[name] = attr.value;
});
}
// Extract children
if (domElement.childNodes) {
Array.from(domElement.childNodes).forEach(child => {
if (child.nodeType === Node.TEXT_NODE) {
const text = child.textContent.trim();
if (text) children.push(text);
} else if (child.nodeType === Node.ELEMENT_NODE) {
const childVNode = this.virtualElementFromDOM(child);
if (childVNode) children.push(childVNode);
}
});
}
if (children.length > 0) {
props.children = children;
}
return { [tagName]: props };
},
// Intelligent DOM patching with minimal changes
patchDOM(domElement, oldVNode, newVNode) {
// Handle text nodes
if (typeof newVNode === 'string' || typeof newVNode === 'number') {
const newText = String(newVNode);
// Check if we're in a browser environment
if (typeof window === 'undefined' || typeof Node === 'undefined' || typeof document === 'undefined') {
return;
}
if (domElement.nodeType === Node.TEXT_NODE) {
if (domElement.textContent !== newText) {
domElement.textContent = newText;
}
} else {
// Replace element with text node
const textNode = document.createTextNode(newText);
if (domElement.parentNode) {
domElement.parentNode.replaceChild(textNode, domElement);
}
}
return;
}
// Handle null/undefined
if (!newVNode) {
domElement.remove();
return;
}
// Handle arrays
if (Array.isArray(newVNode)) {
// This shouldn't happen at the root level, but handle gracefully
console.warn('Array virtual node at root level');
return;
}
// Handle element nodes
const newTagName = Object.keys(newVNode)[0];
// Check if tag name changed
if (domElement.tagName.toLowerCase() !== newTagName.toLowerCase()) {
// Need to replace the entire element
// Check if we're in a browser environment
if (typeof window === 'undefined' || typeof document === 'undefined') {
return;
}
const newElement = this.createDOMElement(newVNode);
if (domElement.parentNode) {
domElement.parentNode.replaceChild(newElement, domElement);
}
attachEventListeners(newElement, this);
return;
}
// Update attributes
this.patchAttributes(domElement, oldVNode, newVNode);
// Update children
this.patchChildren(domElement, oldVNode, newVNode);
// Re-attach event listeners if needed
attachEventListeners(domElement, this);
},
// Patch element attributes efficiently
patchAttributes(domElement, oldVNode, newVNode) {
// Check if we're in a browser environment
if (typeof window === 'undefined' || typeof document === 'undefined') {
return;
}
// Check if domElement has required methods
if (!domElement || typeof domElement.setAttribute !== 'function' || typeof domElement.removeAttribute !== 'function') {
return;
}
const oldTagName = oldVNode ? Object.keys(oldVNode)[0] : null;
const newTagName = Object.keys(newVNode)[0];
const oldProps = oldVNode && oldTagName ? (oldVNode[oldTagName] || {}) : {};
const newProps = newVNode[newTagName] || {};
// Remove old attributes that are no longer present
Object.keys(oldProps).forEach(key => {
if (key === 'children' || key === 'text') return;
if (!(key in newProps)) {
const attrName = key === 'className' ? 'class' : key;
domElement.removeAttribute(attrName);
}
});
// Add or update new attributes
Object.keys(newProps).forEach(key => {
if (key === 'children' || key === 'text') return;
const newValue = newProps[key];
const oldValue = oldProps[key];
if (newValue !== oldValue) {
const attrName = key === 'className' ? 'class' : key;
if (newValue === true) {
domElement.setAttribute(attrName, '');
} else if (newValue === false || newValue === null) {
domElement.removeAttribute(attrName);
} else {
domElement.setAttribute(attrName, String(newValue));
}
}
});
},
// Patch children with intelligent list diffing
patchChildren(domElement, oldVNode, newVNode) {
// Check if we're in a browser environment
if (typeof window === 'undefined' || typeof Node === 'undefined' || typeof document === 'undefined') {
return;
}
// Check if domElement has required methods
if (!domElement || typeof domElement.childNodes === 'undefined' || typeof domElement.appendChild !== 'function') {
return;
}
const oldTagName = oldVNode ? Object.keys(oldVNode)[0] : null;
const newTagName = Object.keys(newVNode)[0];
const oldProps = oldVNode && oldTagName ? (oldVNode[oldTagName] || {}) : {};
const newProps = newVNode[newTagName] || {};
// Extract children arrays
let oldChildren = [];
let newChildren = [];
// Handle old children
if (oldProps.children) {
oldChildren = Array.isArray(oldProps.children) ? oldProps.children : [oldProps.children];
} else if (oldProps.text) {
oldChildren = [oldProps.text];
}
// Handle new children
if (newProps.children) {
newChildren = Array.isArray(newProps.children) ? newProps.children : [newProps.children];
} else if (newProps.text) {
newChildren = [newProps.text];
}
// Get current DOM children (excluding text nodes that are just whitespace)
// Check if Array.from is available and domElement.childNodes is iterable
let domChildren = [];
if (typeof Array.from === 'function' && domElement.childNodes) {
try {
domChildren = Array.from(domElement.childNodes).filter(node => {
return node.nodeType === Node.ELEMENT_NODE ||
(node.nodeType === Node.TEXT_NODE && node.textContent && node.textContent.trim());
});
} catch (error) {
// Fallback to empty array if Array.from fails
console.warn('Failed to convert childNodes to array:', error);
domChildren = [];
}
}
// Simple diffing algorithm - can be improved with key-based diffing
const maxLength = Math.max(oldChildren.length, newChildren.length, domChildren.length);
for (let i = 0; i < maxLength; i++) {
const oldChild = oldChildren[i];
const newChild = newChildren[i];
const domChild = domChildren[i];
if (newChild === undefined) {
// Remove extra DOM children
if (domChild && typeof domChild.remove === 'function') {
domChild.remove();
}
} else if (domChild === undefined) {
// Add new DOM children
const newElement = this.createDOMElement(newChild);
if (newElement) {
domElement.appendChild(newElement);
}
} else {
// Patch existing child
this.patchDOM(domChild, oldChild, newChild);
}
}
},
// Create DOM element from virtual element
createDOMElement(vNode) {
if (typeof vNode === 'string' || typeof vNode === 'number') {
return document.createTextNode(String(vNode));
}
if (!vNode || typeof vNode !== 'object') {
return document.createTextNode('');
}
if (Array.isArray(vNode)) {
const fragment = document.createDocumentFragment();
vNode.forEach(child => {
fragment.appendChild(this.createDOMElement(child));
});
return fragment;
}
const tagName = Object.keys(vNode)[0];
const props = vNode[tagName] || {};
const element = document.createElement(tagName);
// Set attributes
Object.keys(props).forEach(key => {
if (key === 'children' || key === 'text') return;
const value = props[key];
const attrName = key === 'className' ? 'class' : key;
if (value === true) {
element.setAttribute(attrName, '');
} else if (value !== false && value !== null) {
element.setAttribute(attrName, String(value));
}
});
// Add children
if (props.children) {
const children = Array.isArray(props.children) ? props.children : [props.children];
children.forEach(child => {
element.appendChild(this.createDOMElement(child));
});
} else if (props.text) {
element.appendChild(document.createTextNode(String(props.text)));
}
return element;
},
// Render virtual element to HTML string
renderVirtualElement(element) {
if (typeof element === 'string' || typeof element === 'number') {
return String(element);
}
if (!element || typeof element !== 'object') {
return '';
}
// Handle arrays of elements
if (Array.isArray(element)) {
return element.map(el => this.renderVirtualElement(el)).join('');
}
// Handle Coherent.js object syntax
const tagName = Object.keys(element)[0];
const props = element[tagName];
if (!props || typeof props !== 'object') {
return `<${tagName}></${tagName}>`;
}
// Build attributes
let attributes = '';
const children = [];
Object.keys(props).forEach(key => {
if (key === 'children') {
if (Array.isArray(props.children)) {
children.push(...props.children);
} else {
children.push(props.children);
}
} else if (key === 'text') {
children.push(props.text);
} else {
const attrName = key === 'className' ? 'class' : key;
const value = props[key];
if (value === true) {
attributes += ` ${attrName}`;
} else if (value !== false && value !== null && value !== undefined) {
attributes += ` ${attrName}="${String(value).replace(/"/g, '"')}"`;
}
}
});
// Render children
const childrenHTML = children.map(child => this.renderVirtualElement(child)).join('');
// Check if it's a void element
const voidElements = new Set(['area', 'base', 'br', 'col', 'embed', 'hr', 'img', 'input', 'link', 'meta', 'param', 'source', 'track', 'wbr']);
if (voidElements.has(tagName.toLowerCase())) {
return `<${tagName}${attributes}>`;
}
return `<${tagName}${attributes}>${childrenHTML}</${tagName}>`;
},
// Destroy the component and clean up
destroy() {
// Remove event listeners
this.eventListeners.forEach(({element, event, handler}) => {
if (element.removeEventListener) {
element.removeEventListener(event, handler);
}
});
// Clean up state
this.state = null;
this.isHydrated = false;
// Remove from instances map
componentInstances.delete(this.element);
// Component destroyed
},
// Set state (for components with state)
setState(newState) {
if (!this.state) {
this.state = {};
}
const oldState = {...this.state};
this.state = typeof newState === 'function' ?
{...this.state, ...newState(this.state)} :
{...this.state, ...newState};
// Trigger re-render
this.rerender();
// Call state change callback if exists
if (this.onStateChange) {
this.onStateChange(this.state, oldState);
}
},
// Add event listener that will be cleaned up on destroy
addEventListener(targetElement, event, handler) {
if (targetElement.addEventListener) {
targetElement.addEventListener(event, handler);
this.eventListeners.push({element: targetElement, event, handler});
}
}
};
// Store instance
componentInstances.set(element, instance);
// Store the instance on the root element for event handler access
if (element && typeof element.setAttribute === 'function') {
element.__coherentInstance = instance;
// Also add a data attribute to identify this as a coherent component
if (!element.hasAttribute('data-coherent-component')) {
element.setAttribute('data-coherent-component', 'true');
}
}
// Re-execute component to get fresh virtual DOM with function handlers
// For withState components, we need to ensure the state management is properly initialized
const componentProps = { ...instance.props };
// If this is a withState component, initialize its state properly
if (instance.component.__stateContainer) {
// Initialize state container with hydrated state if available
if (instance.state) {
instance.component.__stateContainer.setState(instance.state);
}
// Override the instance setState to use the state container
instance.setState = (newState) => {
// Update the state container
instance.component.__stateContainer.setState(newState);
// Update the instance state for consistency
const updatedState = instance.component.__stateContainer.getState();
instance.state = updatedState;
// Trigger re-render
instance.rerender();
};
}
// Execute component function to get fresh virtual DOM
const freshVirtualElement = instance.component(componentProps);
// Try to inspect the structure more carefully
if (freshVirtualElement && typeof freshVirtualElement === 'object') {
const tagName = Object.keys(freshVirtualElement)[0];
// Process root element and children
if (freshVirtualElement[tagName]) {
}
}
// Attach function-based event listeners from the fresh virtual DOM
attachFunctionEventListeners(element, freshVirtualElement, instance);
// Skip legacy event listeners to avoid conflicts with function handlers
// Skip legacy event attachment to prevent conflicts
// Component hydrated
return instance;
}
// Global registry for event handlers
const eventRegistry = {};
/**
* Register an event handler for later use
* @param {string} id - Unique identifier for the event handler
* @param {Function} handler - The event handler function
*/
export function registerEventHandler(id, handler) {
eventRegistry[id] = handler;
}
/**
* Global event handler that can be called from inline event attributes
* @param {string} eventId - The event handler ID
* @param {Element} element - The DOM element
* @param {Event} event - The event object
*/
if (typeof window !== 'undefined') {
// Initialize event registries if they don't exist
window.__coherentEventRegistry = window.__coherentEventRegistry || {};
window.__coherentActionRegistry = window.__coherentActionRegistry || {};
window.__coherentEventHandler = function(eventId, element, event) {
// Event handler called
// Try to get the function from the event registry first
let handlerFunc = window.__coherentEventRegistry[eventId];
// If not found in event registry, try action registry
if (!handlerFunc && window.__coherentActionRegistry[eventId]) {
handlerFunc = window.__coherentActionRegistry[eventId];
}
if (handlerFunc) {
// Try to find the component instance associated with this element
let componentElement = element;
while (componentElement && !componentElement.hasAttribute('data-coherent-component')) {
componentElement = componentElement.parentElement;
}
if (componentElement && componentElement.__coherentInstance) {
// We found the component instance
const instance = componentElement.__coherentInstance;
const state = instance.state || {};
const setState = instance.setState ? instance.setState.bind(instance) : (() => {});
try {
// Call the handler function with the element as context and pass event, state, setState
handlerFunc.call(element, event, state, setState);
} catch (error) {
console.warn(`Error executing coherent event handler:`, error);
}
} else {
// Fallback: call the handler without component context
try {
handlerFunc.call(element, event);
} catch (error) {
console.warn(`Error executing coherent event handler (no component context):`, error);
}
}
} else {
console.warn(`Event handler not found for ID: ${eventId}`);
}
};
}
/**
* Updates DOM elements to reflect state changes using direct DOM manipulation.
* This function serves as the main entry point for synchronizing component state
* with the visual representation in the DOM.
*
* @param {HTMLElement} rootElement - The root component element containing the UI to update
* @param {Object} state - The new state object containing updated component data
* @since 0.1.2
*/
function updateDOMWithState(rootElement, state) {
if (!rootElement || !state) return;
// Use direct DOM updates to avoid breaking event handlers
updateDOMElementsDirectly(rootElement, state);
// Also update any dynamic content that needs to be re-rendered
updateDynamicContent(rootElement, state);
}
/**
* Simple virtual DOM to DOM rendering fallback
*
* @param {Object} vdom - Virtual DOM object
* @param {HTMLElement} container - Container element
*/
// eslint-disable-next-line no-unused-vars -- kept for future SSR fallback rendering
function renderVirtualDOMToElement(vdom, container) {
if (!vdom || !container) return;
// Handle different virtual DOM structures
if (typeof vdom === 'string') {
container.textContent = vdom;
return;
}
if (typeof vdom === 'object') {
// Get the tag name (first key)
const tagName = Object.keys(vdom)[0];
if (!tagName) return;
const element = document.createElement(tagName);
const props = vdom[tagName] || {};
// Set attributes and properties
Object.keys(props).forEach(key => {
if (key === 'children') {
// Handle children
const children = props.children;
if (Array.isArray(children)) {
children.forEach(child => {
renderVirtualDOMToElement(child, element);
});
} else if (children) {
renderVirtualDOMToElement(children, element);
}
} else if (key === 'text') {
element.textContent = props[key];
} else if (key.startsWith('on')) {
// Skip event handlers for now - they'll be attached separately
} else {
// Set attribute
element.setAttribute(key, props[key]);
}
});
container.appendChild(element);
}
}
/**
* Performs direct DOM updates by finding elements with data-ref attributes
* and updating their content to match the current state. This approach ensures
* that UI elements stay synchronized with component state without full re-rendering.
*
* @param {HTMLElement} rootElement - The root component element to search within
* @param {Object} state - The current state object containing updated values
* @since 0.1.2
*/
function updateDOMElementsDirectly(rootElement, state) {
// Update elements with data-ref attributes that correspond to state values
const refElements = rootElement.querySelectorAll('[data-ref]');
refElements.forEach(element => {
const ref = element.getAttribute('data-ref');
if (ref && state.hasOwnProperty(ref)) {
// Update text content based on the reference
if (ref === 'count') {
element.textContent = `Count: ${state.count}`;
} else if (ref === 'step') {
element.textContent = `Step: ${state.step}`;
} else {
element.textContent = state[ref];
}
}
});
// Update input values that correspond to state
const inputs = rootElement.querySelectorAll('input');
inputs.forEach(input => {
if (input.type === 'number' && state.step !== undefined) {
input.value = state.step;
} else if (input.type === 'text' && state.newTodo !== undefined) {
// DON'T override input value if user is actively typing
// Only update if the input is not focused (user not typing)
if (document.activeElement !== input) {
input.value = state.newTodo;
}
}
});
}
/**
* Updates dynamic content sections such as lists, statistics, and interactive elements.
* This function handles complex UI updates that require more than simple text replacement,
* including filtering, sorting, and structural changes to the DOM.
*
* @param {HTMLElement} rootElement - The root component element containing dynamic content
* @param {Object} state - The current state object with updated data
* @since 0.1.2
*/
function updateDynamicContent(rootElement, state) {
// Update todo list if present
if (state.todos !== undefined) {
updateTodoList(rootElement, state);
}
// Update todo stats if present
if (state.todos !== undefined) {
updateTodoStats(rootElement, state);
}
// Update filter buttons if present
if (state.filter !== undefined) {
updateFilterButtons(rootElement, state);
}
}
/**
* Updates the todo list display by rebuilding the list items based on current state.
* Handles filtering (all/active/completed) and creates new DOM elements for each todo.
* After updating the DOM, re-attaches event handlers to ensure interactivity.
*
* @param {HTMLElement} rootElement - The root component element containing the todo list
* @param {Object} state - The current state object containing todos array and filter settings
* @since 0.1.2
*/
function updateTodoList(rootElement, state) {
const todoList = rootElement.querySelector('.todo-list');
if (!todoList) return;
// Filter todos based on current filter
const filteredTodos = state.todos.filter(todo => {
if (state.filter === 'active') return !todo.completed;
if (state.filter === 'completed') return todo.completed;
return true;
});
// Clear current list
todoList.innerHTML = '';
// Add filtered todos
filteredTodos.forEach(todo => {
const li = document.createElement('li');
li.className = `todo-item ${todo.completed ? 'completed' : ''}`;
li.innerHTML = `
<input type="checkbox" ${todo.completed ? 'checked' : ''} class="todo-checkbox" data-todo-id="${todo.id}">
<span class="todo-text">${todo.text}</span>
<button class="btn btn-danger btn-small" data-todo-id="${todo.id}" data-action="remove">×</button>
`;
todoList.appendChild(li);
});
// Re-attach function-based event handlers to newly created DOM elements
// This is necessary because manually created DOM elements don't automatically get
// the function-based handlers from the virtual DOM
reattachTodoEventHandlers(rootElement, state);
}
/**
* Update todo statistics display
*
* @param {HTMLElement} rootElement - The root component element
* @param {Object} state - The new state
*/
function updateTodoStats(rootElement, state) {
const statsElement = rootElement.querySelector('.todo-stats');
if (!statsElement || !state.todos) return;
const stats = {
total: state.todos.length,
completed: state.todos.filter(todo => todo.completed).length,
active: state.todos.filter(todo => !todo.completed).length
};
statsElement.innerHTML = `
<span class="stat-item">Total: ${stats.total}</span>
<span class="stat-item">Active: ${stats.active}</span>
<span class="stat-item">Completed: ${stats.completed}</span>
`;
}
/**
* Update filter button states
*
* @param {HTMLElement} rootElement - The root component element
* @param {Object} state - The new state
*/
function updateFilterButtons(rootElement, state) {
const filterButtons = rootElement.querySelectorAll('.filter-btn');
filterButtons.forEach(button => {
const buttonText = button.textContent.toLowerCase();
if (buttonText === state.filter || (buttonText === 'all' && state.filter === 'all')) {
button.classList.add('active');
} else {
button.classList.remove('active');
}
});
}
/**
* Re-attaches event handlers to dynamically created todo items after DOM updates.
* This function is essential for maintaining interactivity when todo items are
* recreated during state changes. Handles both delete buttons and toggle checkboxes.
*
* @param {HTMLElement} rootElement - The root component element containing todo items
* @param {Object} state - The current state object for context
* @since 0.1.2
*/
function reattachTodoEventHandlers(rootElement) {
// Find the component instance to get access to the component's handlers
const componentInstance = rootElement.__coherentInstance;
if (!componentInstance || !componentInstance.component) {
console.warn('⚠️ No component instance found for re-attaching todo event handlers');
return;
}
// Get the component's removeTodo and toggleTodo functions
// These should be available in the component's scope
const component = componentInstance.component;
// Re-attach delete button handlers
const deleteButtons = rootElement.querySelectorAll('button[data-action="remove"]');
deleteButtons.forEach(button => {
const todoId = parseInt(button.getAttribute('data-todo-id'));
if (todoId) {
// Remove any existing handler to prevent duplicates
const handlerKey = `__coherent_click_handler`;
if (button[handlerKey]) {
button.removeEventListener('click', button[handlerKey]);
}
// Create new handler that calls the component's removeTodo function
const clickHandler = (event) => {
event.preventDefault();
// Get current state and setState from component
if (component.__stateContainer) {
const currentState = component.__stateContainer.getState();
const setState = component.__stateContainer.setState.bind(component.__stateContainer);
// Remove the todo
setState({
todos: currentState.todos.filter(todo => todo.id !== todoId)
});
// Trigger DOM update to reflect the state change
const updatedState = component.__stateContainer.getState();
updateDOMWithState(rootElement, updatedState);
}
};
// Attach the handler
button.addEventListener('click', clickHandler);
button[handlerKey] = clickHandler;
}
});
// Re-attach checkbox handlers
const checkboxes = rootElement.querySelectorAll('.todo-checkbox');
checkboxes.forEach(checkbox => {
const todoId = parseInt(checkbox.getAttribute('data-todo-id'));
if (todoId) {
// Remove any existing handler to prevent duplicates
const handlerKey = `__coherent_change_handler`;
if (checkbox[handlerKey]) {
checkbox.removeEventListener('change', checkbox[handlerKey]);
}
// Create new handler that calls the component's toggleTodo function
const changeHandler = () => {
// Get current state and setState from component
if (component.__stateContainer) {
const currentState = component.__stateContainer.getState();
const setState = component.__stateContainer.setState.bind(component.__stateContainer);
// Toggle the todo
setState({
todos: currentState.todos.map(todo =>
todo.id === todoId ? { ...todo, completed: !todo.completed } : todo
)
});
// Trigger DOM update to reflect the state change
const updatedState = component.__stateContainer.getState();
updateDOMWithState(rootElement, updatedState);
}
};
// Attach the handler
checkbox.addEventListener('change', changeHandler);
checkbox[handlerKey] = changeHandler;
}
});
}
/**
* Attaches function-based event listeners from virtual DOM definitions to real DOM elements.
* This is the core mechanism that enables interactive components by bridging the gap
* between virtual DOM event handlers and actual browser events. Prevents duplicate
* handlers and ensures proper state management integration.
*
* @param {HTMLElement} rootElement - The root DOM element to search for event targets
* @param {Object} virtualElement - The virtual DOM element containing function handlers
* @param {Object} instance - The component instance providing state and context
* @since 0.1.2
*/
function attachFunctionEventListeners(rootElement, virtualElement, instance, options = {}) {
if (!rootElement || !virtualElement || typeof window === 'undefined') {
return;
}
// Helper function to traverse virtual DOM and find function handlers
function traverseAndAttach(domElement, vElement, path = []) {
if (!vElement || typeof vElement !== 'object') return;
// Handle array of virtual elements
if (Array.isArray(vElement)) {
vElement.forEach((child, index) => {
const childElement = domElement.children[index];
if (childElement) {
traverseAndAttach(childElement, child, [...path, index]);
}
});
return;
}
// Handle single virtual element
const tagName = Object.keys(vElement)[0];
const elementProps = vElement[tagName];
if (elementProps && typeof elementProps === 'object') {
// Look for event handler functions
const eventHandlers = ['onclick', 'onchange', 'oninput', 'onfocus', 'onblur', 'onsubmit', 'onkeypress', 'onkeydown', 'onkeyup', 'onmouseenter', 'onmouseleave'];
eventHandlers.forEach(eventName => {
const handler = elementProps[eventName];
if (typeof handler === 'function') {
const eventType = eventName.substring(2); // Remove 'on' prefix
// If inputsOnly option is set, only attach input-related events and click events on dynamically generated elements
if (options.inputsOnly) {
const inputEvents = ['input', 'change', 'keypress'];
const isDynamicElement = domElement.closest('.todo-item') || domElement.closest('[data-dynamic]');
if (!inputEvents.includes(eventType) && !(eventType === 'click' && isDynamicElement)) {
return; // Skip non-input events except clicks on dynamic elements
}
}
// Special handling for input events
// Check if handler is already attached to prevent duplicates
const handlerKey = `__coherent_${eventType}_handler`;
if (domElement[handlerKey]) {
// Remove the old handler first
domElement.removeEventListener(eventType, domElement[handlerKey]);
delete domElement[handlerKey];
}
// Create a wrapper that provides component context
const wrappedHandler = (event) => {
try {
// Only prevent default for non-input events and non-form events
if (eventType !== 'input' && eventType !== 'change' && eventType !== 'keypress') {
event.preventDefault();
}
// Execute the function handler with proper context
// Extract state and setState from the component's current execution context
let currentState = {};
let currentSetState = () => {};
// For withState components, use the state container
if (instance.component && instance.component.__stateContainer) {
currentState = instance.component.__stateContainer.getState();
currentSetState = (newState) => {
// Call the component's setState method
instance.component.__stateContainer.setState(newState);
// Update the instance state for consistency
if (instance.state && typeof newState === 'object') {
Object.assign(instance.state, newState);
}
// Get the updated state after setState
instance.component.__stateContainer.getState();
// Trigger component re-render to reflect the new state
const componentRoot = domElement.closest('[data-coherent-component]');
if (componentRoot && componentRoot.__coherentInstance) {
componentRoot.__coherentInstance.rerender();
}
};
} else if (instance.state) {
// Fallback for non-withState components
currentState = instance.state;
currentSetState = (newState) => {
if (typeof newState === 'object') {
Object.assign(instance.state, newState);
}
// Trigger component re-render to reflect the new state
const componentRoot = domElement.closest('[data-coherent-component]');
if (componentRoot && componentRoot.__coherentInstance) {
componentRoot.__coherentInstance.rerender();
}
};
}
// Call the original handler with event, state, and setState
const result = handler.call(domElement, event, currentState, currentSetState);
return result;
} catch (error) {
console.error(`Error in ${eventName} handler:`, error);
}
};
// Remove any existing onclick attributes that might interfere
if (domElement.hasAttribute(eventName)) {
domElement.removeAttribute(eventName);
}
// Store the handler reference to prevent duplicates
domElement[handlerKey] = wrappedHandler;
// Add the new event listener (use capture only for non-input events)
const useCapture = eventType !== 'input' && eventType !== 'change';
domElement.addEventListener(eventType, wrappedHandler, useCapture);
// Input event handler attached successfully
// Add to instance's event listeners for cleanup
if (instance.eventListeners && Array.isArray(instance.eventListeners)) {
instance.eventListeners.push({
element: domElement,
event: eventType,
handler: wrappedHandler
});
}
}
});
// Recursively handle children
if (elementProps.children) {
const children = Array.isArray(elementProps.children) ? elementProps.children : [elementProps.children];
children.forEach((child, index) => {
const childElement = domElement.children[index];
if (childElement && child) {
traverseAndAttach(childElement, child, [...path, 'children', index]);
}
});
}
}
}
// Start traversal from the root
traverseAndAttach(rootElement, virtualElement);
}
/**
* Attach event listeners from data attributes
*
* @param {HTMLElement} element - The root element
* @param {Object} instance - The component instance
*/
function attachEventListeners(element, instance) {
// Check if we're in a browser environment
try {
// Clear any existing event listeners if this is a re-hydration
if (instance && instance.eventListeners && Array.isArray(instance.eventListeners)) {
instance.eventListeners.forEach(({ element, event, handler }) => {
if (element && typeof element.removeEventListener === 'function') {
element.removeEventListener(event, handler);
}
});
instance.eventListeners = [];
}
// Check if we're in a browser environment
if (typeof window === 'undefined' || typeof document === 'undefined') {
return;
}
// Check if element has required methods
if (!element || typeof element.querySelectorAll !== 'function') {
return;
}
// Find all elements with data-action attributes
const actionElements = element.querySelectorAll('[data-action]');
actionElements.forEach(actionElement => {
// Check if element has required methods
if (!actionElement || typeof actionElement.getAttribute !== 'function') return;
const action = actionElement.getAttribute('data-action');
const target = actionElement.getAttribute('data-target') || 'default';
const event = actionElement.getAttribute('data-event') || 'click';
if (action) {
const handler = (e) => {
if (e && typeof e.preventDefault === 'function') {
e.preventDefault(); // Prevent default behavior for better control
}
handleComponentAction(e, action, target, instance);
};
// Add event listener
if (typeof actionElement.addEventListener === 'function') {
actionElement.addEventListener(event, handler);
// Store for cleanup
if (instance.eventListeners && Array.isArray(instance.eventListeners)) {
instance.eventListeners.push({
element: actionElement,
event,
handler
});
}
}
}
});
// Also look for common event attributes and convert them to event listeners
const eventAttributes = ['onclick', 'onchange', 'oninput', 'onfocus', 'onblur', 'onsubmit'];
eventAttributes.forEach(eventName => {
const attributeSelector = `[${eventName}]`;
const elements = element.querySelectorAll(attributeSelector);
elements.forEach(elementWithEvent => {
// Check if element has required methods
if (!elementWithEvent || typeof elementWithEvent.getAttribute !== 'function') return;
const eventAttr = elementWithEvent.getAttribute(eventName);
const eventType = eventName.substring(2); // Remove 'on' prefix
// Handle regular string event handlers
if (eventAttr && typeof elementWithEvent.hasAttribute === 'function' && !elementWithEvent.hasAttribute(`data-hydrated-${eventType}`)) {
// Mark as processed to avoid duplicate handling
elementWithEvent.setAttribute(`data-hydrated-${eventType}`, 'true');
const handler = (e) => {
try {
// Create a safe execution context with access to component state
// We'll pass the component instance's state and setState function to the handler
const state = instance.state || {};
const setState = instance.setState || (() => {});
// Create a function with access to the event, state, and setState
// TODO: Replace Function constructor with safer alternative
// eslint-disable-next-line no-new-func
const func = new Function('event', 'state', 'setState', 'element', eventAttr);
func.call(elementWithEvent, e, state, setState, elementWithEvent);
} catch (error) {
console.warn(`Error executing ${eventName} handler:`, error);
}
};
if (typeof elementWithEvent.addEventListener === 'function') {
elementWithEvent.addEventListener(eventType, handler);
if (instance.eventListeners && Array.isArray(instance.eventListeners)) {
instance.eventListeners.push({
element: elementWithEvent,
event: eventType,
handler
});
}
}
}
});
});
// Also look for data-action attributes (new approach)
const dataActionElements = element.querySelectorAll('[data-action]');
dataActionElements.forEach(actionElement => {
// Check if element has required methods
if (!actionElement || typeof actionElement.getAttribute !== 'function') return;
const actionId = actionElement.getAttribute('data-action');
const eventType = actionElement.getAttribute('data-event') || 'click';
if (actionId) {
// Get the function from the action registry
let handlerFunc = null;
// Try to get from action registry (server-side stored)
if (typeof window !== 'undefined' && window.__coherentActionRegistry && window.__coherentActionRegistry[actionId]) {
handlerFunc = window.__coherentActionRegistry[actionId];
} else {
console.warn(`No handler found for action ${actionId}`, window.__coherentActionRegistry);
}
if (handlerFunc && typeof handlerFunc === 'function') {
// Mark as processed to avoid duplicate handling
if (typeof actionElement.hasAttribute === 'function' && !actionElement.hasAttribute(`data-hydrated-${eventType}`)) {
actionElement.setAttribute(`data-hydrated-${eventType}`, 'true');
const handler = (e) => {
try {
// Try to find the component instance associated with this element
let componentElement = actionElement;
while (componentElement && !componentElement.hasAttribute('data-coherent-component')) {
componentElement = componentElement.parentElement;
}
if (componentElement && componentElement.__coherentInstance) {
// We found the component instance
const instance = componentElement.__coherentInstance;
const state = instance.state || {};
const setState = instance.setState || (() => {});
// Call the handler function with the element as context and pass event, state, setState
handlerFunc.call(actionElement, e, state, setState);
} else {
// Fallback: call the handler without component context
handlerFunc.call(actionElement, e);
}
} catch (error) {
console.warn(`Error executing action handler for ${actionId}:`, error);
}
};
if (typeof actionElement.addEventListener === 'function') {
actionElement.addEventListener(eventType, handler);
if (instance && instance.eventListeners && Array.isArray(instance.eventListeners)) {
instance.eventListeners.push({
element: actionElement,
event: eventType,
handler
});
}
}
}
}
}
});
// Also look for Coherent-specific event handlers (data-coherent-event)
const coherentEventElements = element.querySelectorAll('[data-coherent-event]');
coherentEventElements.forEach(elementWithCoherentEvent => {
// Check if element has required methods
if (!elementWithCoherentEvent || typeof elementWithCoherentEvent.getAttribute !== 'function') return;
const eventId = elementWithCoherentEvent.getAttribute('data-coherent-event');
const eventType = elementWithCoherentEvent.getAttribute('data-coherent-event-type');
if (eventId && eventType) {
// Get the function from the registry
let handlerFunc = null;
// Try to get from global registry (server-side stored)
if (typeof window !== 'undefined' && window.__coherentEventRegistry && window.__coherentEventRegistry[eventId]) {
handlerFunc = window.__coherentEventRegistry[eventId];
}
if (handlerFunc && typeof handlerFunc === 'function') {
// Mark as processed to avoid duplicate handling
if (typeof elementWithCoherentEvent.hasAttribute === 'function' && !elementWithCoherentEvent.hasAttribute(`data-hydrated-${eventType}`)) {
elementWithCoherentEvent.setAttribute(`data-hydrated-${eventType}`, 'true');
const handler = (e) => {
try {
// Call the original function with proper context
// Pass the event, state, and setState as parameters
const state = instance.state || {};
const setState = instance.setState || (() => {});
// Bind the function to the element and call it with the event
handlerFunc.call(elementWithCoherentEvent, e, state, setState);
} catch (error) {
console.warn(`Error executing coherent event handler:`, error);
}
};
if (typeof elementWithCoherentEvent.addEventListener === 'function') {
elementWithCoherentEvent.addEventListener(eventType, handler);
if (instance.eventListeners && Array.isArray(instance.eventListeners)) {
instance.eventListeners.push({
element: elementWithCoherentEvent,
event: eventType,
handler
});
}
}
}
}
}
});
} catch (error) {
console.warn('Error attaching event listeners:', error);
}
}
/**
* Handle component actions
*
* @param {Event} event - The DOM event
* @param {string} action - The action name
* @param {string} target - The target identifier
* @param {Object} instance - The component instance
*/
function handleComponentAction(event, action, target, instance) {
// Handle common actions
switch (action) {
case 'increment':
if (instance.state && instance.state.count !== undefined) {
const step = instance.state.step || 1;
instance.setState({count: instance.state.count + step});
// Update the DOM directly for immediate feedback
const countElement = instance.element.querySelector('[data-ref="count"]');
if (countElement) {
countElement.textContent = `Count: ${instance.state.count + step}`;
}
}
break;
case 'decrement':
if (instance.state && instance.state.count !== undefined) {
const step = instance.state.step || 1;
instance.setState({count: instance.state.count - step});
// Update the DOM directly for immediate feedback
const countElement = instance.element.querySelector('[data-ref="count"]');
if (countElement) {
countElement.textContent = `Count: ${instance.state.count - step}`;
}
}
break;
case 'reset':
if (instance.state) {
const initialCount = instance.props.initialCount || 0;
instance.setState({count: initialCount});
// Update the DOM directly for immediate feedback
const countElement = instance.element.querySelector('[data-ref="count"]');
if (countElement) {
countElement.textContent = `Count: ${initialCount}`;
}
}
break;
case 'changeStep':
// Get the input value
const inputElement = event.target;
if (inputElement && inputElement.value) {
const stepValue = parseInt(inputElement.value, 10);
if (!isNaN(stepValue) && stepValue >= 1 && stepValue <= 10) {
instance.setState({step: stepValue});
// Update the DOM directly for immediate feedback
const stepElement = instance.element.querySelector('[data-ref="step"]');
if (stepElement) {
stepElement.textContent = `Step: ${stepValue}`;
}
}
}
break;
case 'toggle':
const todoIndex = event.target && event.target.getAttribute ?
parseInt(event.target.getAttribute('data-todo-index')) : -1;
if (todoIndex >= 0 && instance.state && instance.state.todos && instance.state.todos[todoIndex]) {
const newTodos = [...instance.state.todos];
newTodos[todoIndex].completed = !newTodos[todoIndex].completed;
instance.setState({todos: newTodos});
}
break;
case 'add':
if (typeof document !== 'undefined' && document.getElementById) {
const input = document.getElementById(`new-todo-${target}`);
if (input && input.value && input.value.trim()) {
if (instance.state && instance.state.todos) {
const newTodos = [
...instance.state.todos,
{ text: input.value.trim(), completed: false }
];
instance.setState({todos: newTodos});
input.value = '';
}
}
}
break;
default:
// Check if this is a custom method on the instance
if (instance && typeof instance[action] === 'function') {
try {
// Call the custom method on the instance
instance[action](event, target);
} catch (error) {
console.warn(`Error executing custom action ${action}:`, error);
}
} else {
// Check if this is a function handler in the action registry
if (typeof window !== 'undefined' && window.__coherentActionRegistry && window.__coherentActionRegistry[action]) {
const handlerFunc = window.__coherentActionRegistry[action];
// Get the component state and setState function if available
const state = instance ? (instance.state || {}) : {};
const setState = instance && instance.setState ? instance.setState.bind(instance) : (() => {});
try {
// Call the handler function with event, state, and setState
handlerFunc(event, state, setState);
} catch (error) {
console.warn(`Error executing action handler ${action}:`, error);
}
} else {
// Custom action handling would go here
// Custom action executed
}
}
}
}
/**
* Hydrate multiple elements with their corresponding components
*
* @param {Array} elements - Array of DOM elements to hydrate
* @param {Array} components - Array of Coherent component functions
* @param {Array} propsArray - Array of props for each component
* @returns {Array} Array of hydrated component instances
*/
function hydrateAll(elements, components, propsArray = []) {
if (elements.length !== components.length) {
throw new Error('Number of elements must match number of components');
}
return elements.map((element, index) => {
const component = components[index];
const props = propsArray[index] || {};
return hydrate(element, component, props);
});
}
/**
* Find and hydrate elements by CSS selector
*
* @param {string} selector - CSS selector to find elements
* @param {Function} component - The Coherent component function
* @param {Object} props - The props to pass to the component
* @returns {Array} Array of hydrated component instances
*/
function hydrateBySelector(selector, component, props = {}) {
if (typeof window === 'undefined' || !document.querySelectorAll) {
return [];
}
const elements = document.querySelectorAll(selector);
return Array.from(elements).map(element => hydrate(element, component, props));
}
/**
* Enable client-side interactivity for event handlers
*
* @param {HTMLElement} rootElement - The root element to enable events on
*/
function enableClientEvents(rootElement = document) {
if (typeof window === 'undefined' || !rootElement.querySelectorAll) {
return;
}
// This function is now handled automatically during hydration
// but can be called to enable events on dynamically added elements
// Client events enabled
}
/**
* Create a hydratable component
*
* @param {Function} component - The Coherent component function
* @param {Object} options - Hydration options
* @returns {Function} A component that can be hydrated
*/
function makeHydratable(component, options = {}) {
// Extract component name from options or use function name
const componentName = options.componentName || component.name || 'AnonymousComponent';
// Create a new function that wraps the original component
const hydratableComponent = function(props = {}) {
return component(props);
};
// Set the component name on the hydratable component function
Object.defineProperty(hydratableComponent, 'name', {
value: componentName,
writable: false
});
// Copy all properties from the original component, including withState metadata
Object.keys(component).forEach(key => {
hydratableComponent[key] = component[key];
});
// Copy prototype if it exists
if (component.prototype) {
hydratableComponent.prototype = Object.create(component.prototype);
}
// Special handling for withState wrapped components
if (component.__wrappedComponent && component.__stateContainer) {
hydratableComponent.__wrappedComponent = component.__wrappedComponent;
hydratableComponent.__stateContainer = component.__stateContainer;
}
// Add hydration metadata to the component
hydratableComponent.isHydratable = true;
hydratableComponent.hydrationOptions = options;
// Add auto-hydration functionality
hydratableComponent.autoHydrate = function(componentRegistry = {}) {
// Register this component if not already registered
if (!componentRegistry[hydratableComponent.name || 'AnonymousComponent']) {
componentRegistry[hydratableComponent.name || 'AnonymousComponent'] = hydratableComponent;
}
// Call the global autoHydrate function
autoHydrate(componentRegistry);
};
// Mark this component as hydratable
hydratableComponent.isHydratable = true;
// Add a method to manually set hydration data for cases where we need to override
hydratableComponent.withHydrationData = function(customProps = {}, customState = null) {
return {
render: function(props = {}) {
const mergedProps = { ...customProps, ...props };
const result = hydratableComponent(mergedProps);
const hydrationData = hydratableComponent.getHydrationData(mergedProps, customState);
// Add hydration attributes to the root element
if (result && typeof result === 'object' && !Array.isArray(result)) {
const tagName = Object.keys(result)[0];
const elementProps = result[tagName];
if (elementProps && typeof elementProps === 'object') {
// Add hydration attributes
Object.keys(hydrationData.hydrationAttributes).forEach(attr => {
const value = hydrationData.hydrationAttributes[attr];
if (value !== null) {
elementProps[attr] = value;
}
});
}
}
return result;
}
};
};
// Add a method to get hydration data
hydratableComponent.getHydrationData = function(props = {}, state = null) {
return {
componentName: componentName,
props,
initialState: options.initialState,
// Add data attributes for hydration
hydrationAttributes: {
'data-coherent-component': componentName,
'data-coherent-state': state ? JSON.stringify(state) : (options.initialState ? JSON.stringify(options.initialState) : null),
'data-coherent-props': Object.keys(props).length > 0 ? JSON.stringify(props) : null
}
};
};
// Add a method to render with hydration data
hydratableComponent.renderWithHydration = function(props = {}) {
const result = hydratableComponent(props);
// Try to extract state from the component if it's a withState wrapped component
let state = null;
if (hydratableComponent.__wrappedComponent && hydratableComponent.__stateContainer) {
// This is a withState wrapped component, try to get its state
try {
state = hydratableComponent.__stateContainer.getState();
} catch (e) {
// If we can't get the state, that's OK
console.warn('Could not get component state:', e);
}
}
const hydrationData = hydratableComponent.getHydrationData(props, state);
// Add hydration attributes to the root element
if (result && typeof result === 'object' && !Array.isArray(result)) {
const tagName = Object.keys(result)[0];
const elementProps = result[tagName];
if (elementProps && typeof elementProps === 'object') {
// Add hydration attributes
Object.keys(hydrationData.hydrationAttributes).forEach(attr => {
const value = hydrationData.hydrationAttributes[attr];
if (value !== null) {
elementProps[attr] = value;
}
});
}
}
return result;
};
return hydratableComponent;
}
/**
* Auto-hydrate all components on page load
*
* @param {Object} componentRegistry - Registry of component functions
*/
function autoHydrate(componentRegistry = {}) {
if (typeof window === 'undefined' || typeof document === 'undefined') {
return;
}
// autoHydrate called
// Check if registry is actually the window object (common mistake)
if (componentRegistry === window) {
console.warn('⚠️ Component registry is the window object! This suggests the registry was not properly initialized.');
// Falling back to window.componentRegistry
componentRegistry = window.componentRegistry || {};
}
// Initialize registries if they don't exist
window.__coherentEventRegistry = window.__coherentEventRegistry || {};
window.__coherentActionRegistry = window.__coherentActionRegistry || {};
// Wait for DOM to be ready
const hydrateComponents = () => {
const hydrateableElements = document.querySelectorAll('[data-coherent-component]');
hydrateableElements.forEach(element => {
const componentName = element.getAttribute('data-coherent-component');
// Look for the component in the registry
let component = componentRegistry[componentName];
// If not found by exact name, try to find it by checking if it's a hydratable component
if (!component) {
// Component not found by name, searching registry...
for (const comp of Object.values(componentRegistry)) {
if (comp && comp.isHydratable) {
component = comp;
break;
}
}
}
if (!component) {
console.error(`❌ Component ${componentName} not found in registry`);
return; // Skip this element
}
if (component) {
try {
// Extract props from data attributes
const propsAttr = element.getAttribute('data-coherent-props');
const props = propsAttr ? JSON.parse(propsAttr) : {};
// Extract initial state
const stateAttr = element.getAttribute('data-coherent-state');
const initialState = stateAttr ? JSON.parse(stateAttr) : null;
// Hydrate the component
const instance = hydrate(element, component, props, { initialState });
if (instance) {
// Component auto-hydrated successfully
} else {
console.warn(`❌ Failed to hydrate component: ${componentName}`);
}
} catch (error) {
console.error(`❌ Failed to auto-hydrate component ${componentName}:`, error);
}
}
});
// Also enable client events for any remaining elements
enableClientEvents();
};
// Run hydration when DOM is ready
if (document.readyState === 'loading') {
document.addEventListener('DOMContentLoaded', hydrateComponents);
} else {
hydrateComponents();
}
}
// Also export individual functions for convenience
export {
hydrate,
hydrateAll,
hydrateBySelector,
enableClientEvents,
makeHydratable,
autoHydrate
};
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