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// Mediator Module
const mediator = (function() {
const channels = {};
function subscribe(channel, fn) {
if (!channels[channel]) {
channels[channel] = [];
}
channels[channel].push(fn);
}
function publish(channel, data) {
if (!channels[channel]) {
return;
}
channels[channel].forEach(fn => {
fn(data);
});
}
return {
subscribe: subscribe,
publish: publish
};
})();
// UI Module
const uiModule = (function() {
const inputField = document.getElementById('dataInput');
const submitButton = document.getElementById('submitButton');
function submitData() {
const data = inputField.value;
mediator.publish('dataSubmitted', data);
}
function init() {
submitButton.addEventListener('click', submitData);
}
return {
init: init
};
})();
// Data Processing Module
const dataProcessingModule = (function() {
function validateData(data) {
// Simulate data validation (e.g., check for empty string)
if (!data) {
mediator.publish('validationError', 'Data cannot be empty.');
return false;
}
return true;
}
function processData(data) {
// Simulate data processing (e.g., formatting)
const processedData = `Processed: ${data}`;
mediator.publish('dataProcessed', processedData);
}
function handleDataSubmission(data) {
if (validateData(data)) {
processData(data);
}
}
function init() {
mediator.subscribe('dataSubmitted', handleDataSubmission);
}
return {
init: init
};
})();
// Error Display Module
const errorDisplayModule = (function() {
const errorDisplay = document.getElementById('errorDisplay');
function displayError(message) {
errorDisplay.textContent = message;
errorDisplay.style.color = 'red';
}
function init() {
mediator.subscribe('validationError', displayError);
}
return {
init: init
};
})();
// Success Display Module
const successDisplayModule = (function() {
const successDisplay = document.getElementById('successDisplay');
function displaySuccess(message) {
successDisplay.textContent = message;
successDisplay.style.color = 'green';
}
function handleDataProcessed(data) {
displaySuccess(data);
}
function init() {
mediator.subscribe('dataProcessed', handleDataProcessed);
}
return {
init: init
}
})();
// Initialization
uiModule.init();
dataProcessingModule.init();
errorDisplayModule.init();
successDisplayModule.init();
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