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// code related to showing and updating progressbar shown as the image is being made

function rememberGallerySelection() {

}

function getGallerySelectedIndex() {

}

function request(url, data, handler, errorHandler) {

var xhr = new XMLHttpRequest();

xhr.open("POST", url, true);

xhr.setRequestHeader("Content-Type", "application/json");

xhr.onreadystatechange = function() {

if (xhr.readyState === 4) {

if (xhr.status === 200) {

try {

var js = JSON.parse(xhr.responseText);

handler(js);

} catch (error) {

console.error(error);

errorHandler();

}

} else {

errorHandler();

}

}

};

var js = JSON.stringify(data);

xhr.send(js);

}

function pad2(x) {

return x < 10 ? '0' + x : x;

}

function formatTime(secs) {

if (secs > 3600) {

return pad2(Math.floor(secs / 60 / 60)) + ":" + pad2(Math.floor(secs / 60) % 60) + ":" + pad2(Math.floor(secs) % 60);

} else if (secs > 60) {

return pad2(Math.floor(secs / 60)) + ":" + pad2(Math.floor(secs) % 60);

} else {

return Math.floor(secs) + "s";

}

}

var originalAppTitle = undefined;

onUiLoaded(function() {

originalAppTitle = document.title;

});

function setTitle(progress) {

var title = originalAppTitle;

if (opts.show_progress_in_title && progress) {

title = '[' + progress.trim() + '] ' + title;

}

if (document.title != title) {

document.title = title;

}

}

function randomId() {

return "task(" + Math.random().toString(36).slice(2, 7) + Math.random().toString(36).slice(2, 7) + Math.random().toString(36).slice(2, 7) + ")";

}

// starts sending progress requests to "/internal/progress" uri, creating progressbar above progressbarContainer element and

// preview inside gallery element. Cleans up all created stuff when the task is over and calls atEnd.

// calls onProgress every time there is a progress update

function requestProgress(id_task, progressbarContainer, gallery, atEnd, onProgress, inactivityTimeout = 40) {

var dateStart = new Date();

var wasEverActive = false;

var parentProgressbar = progressbarContainer.parentNode;

var wakeLock = null;

var requestWakeLock = async function() {

if (!opts.prevent_screen_sleep_during_generation || wakeLock) return;

try {

wakeLock = await navigator.wakeLock.request('screen');

} catch (err) {

console.error('Wake Lock is not supported.');

}

};

var releaseWakeLock = async function() {

if (!opts.prevent_screen_sleep_during_generation || !wakeLock) return;

try {

await wakeLock.release();

wakeLock = null;

} catch (err) {

console.error('Wake Lock release failed', err);

}

};

var divProgress = document.createElement('div');

divProgress.className = 'progressDiv';

divProgress.style.display = opts.show_progressbar ? "block" : "none";

var divInner = document.createElement('div');

divInner.className = 'progress';

divProgress.appendChild(divInner);

parentProgressbar.insertBefore(divProgress, progressbarContainer);

var livePreview = null;

var removeProgressBar = function() {

releaseWakeLock();

if (!divProgress) return;

setTitle("");

parentProgressbar.removeChild(divProgress);

if (gallery && livePreview) gallery.removeChild(livePreview);

atEnd();

divProgress = null;

};

var funProgress = function(id_task) {

requestWakeLock();

request("./internal/progress", {id_task: id_task, live_preview: false}, function(res) {

if (res.completed) {

removeProgressBar();

return;

}

let progressText = "";

divInner.style.width = ((res.progress || 0) * 100.0) + '%';

divInner.style.background = res.progress ? "" : "transparent";

if (res.progress > 0) {

progressText = ((res.progress || 0) * 100.0).toFixed(0) + '%';

}

if (res.eta) {

progressText += " ETA: " + formatTime(res.eta);

}

setTitle(progressText);

if (res.textinfo && res.textinfo.indexOf("\n") == -1) {

progressText = res.textinfo + " " + progressText;

}

divInner.textContent = progressText;

var elapsedFromStart = (new Date() - dateStart) / 1000;

if (res.active) wasEverActive = true;

if (!res.active && wasEverActive) {

removeProgressBar();

return;

}

if (elapsedFromStart > inactivityTimeout && !res.queued && !res.active) {

removeProgressBar();

return;

}

if (onProgress) {

onProgress(res);

}

setTimeout(() => {

funProgress(id_task, res.id_live_preview);

}, opts.live_preview_refresh_period || 500);

}, function() {

removeProgressBar();

});

};

var funLivePreview = function(id_task, id_live_preview) {

request("./internal/progress", {id_task: id_task, id_live_preview: id_live_preview}, function(res) {

if (!divProgress) {

return;

}

if (res.live_preview && gallery) {

var img = new Image();

img.onload = function() {

if (!livePreview) {

livePreview = document.createElement('div');

livePreview.className = 'livePreview';

gallery.insertBefore(livePreview, gallery.firstElementChild);

}

livePreview.appendChild(img);

if (livePreview.childElementCount > 2) {

livePreview.removeChild(livePreview.firstElementChild);

}

};

img.src = res.live_preview;

}

setTimeout(() => {

funLivePreview(id_task, res.id_live_preview);

}, opts.live_preview_refresh_period || 500);

}, function() {

removeProgressBar();

});

};

funProgress(id_task, 0);

if (gallery) {

funLivePreview(id_task, 0);

}

}