/
core.js
627 lines (558 loc) · 21.8 KB
/
core.js
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var core = {};
// various common utilities
// seedrandom.min.js -- https://github.com/davidbau/seedrandom
// Usage: Math.seedrandom('hello.'); -- Set the seed
// Usage: Math.seedrandom(); -- Automatically set a random seed
!function(a,b){function c(c,j,k){var n=[];j=1==j?{entropy:!0}:j||{};var s=g(f(j.entropy?[c,i(a)]:null==c?h():c,3),n),t=new d(n),u=function(){for(var a=t.g(m),b=p,c=0;a<q;)a=(a+c)*l,b*=l,c=t.g(1);for(;a>=r;)a/=2,b/=2,c>>>=1;return(a+c)/b};return u.int32=function(){return 0|t.g(4)},u.quick=function(){return t.g(4)/4294967296},u.double=u,g(i(t.S),a),(j.pass||k||function(a,c,d,f){return f&&(f.S&&e(f,t),a.state=function(){return e(t,{})}),d?(b[o]=a,c):a})(u,s,"global"in j?j.global:this==b,j.state)}function d(a){var b,c=a.length,d=this,e=0,f=d.i=d.j=0,g=d.S=[];for(c||(a=[c++]);e<l;)g[e]=e++;for(e=0;e<l;e++)g[e]=g[f=s&f+a[e%c]+(b=g[e])],g[f]=b;(d.g=function(a){for(var b,c=0,e=d.i,f=d.j,g=d.S;a--;)b=g[e=s&e+1],c=c*l+g[s&(g[e]=g[f=s&f+b])+(g[f]=b)];return d.i=e,d.j=f,c})(l)}function e(a,b){return b.i=a.i,b.j=a.j,b.S=a.S.slice(),b}function f(a,b){var c,d=[],e=typeof a;if(b&&"object"==e)for(c in a)try{d.push(f(a[c],b-1))}catch(a){}return d.length?d:"string"==e?a:a+"\0"}function g(a,b){for(var c,d=a+"",e=0;e<d.length;)b[s&e]=s&(c^=19*b[s&e])+d.charCodeAt(e++);return i(b)}function h(){try{var b;return j&&(b=j.randomBytes)?b=b(l):(b=new Uint8Array(l),(k.crypto||k.msCrypto).getRandomValues(b)),i(b)}catch(b){var c=k.navigator,d=c&&c.plugins;return[+new Date,k,d,k.screen,i(a)]}}function i(a){return String.fromCharCode.apply(0,a)}var j,k=this,l=256,m=6,n=52,o="random",p=b.pow(l,m),q=b.pow(2,n),r=2*q,s=l-1;if(b["seed"+o]=c,g(b.random(),a),"object"==typeof module&&module.exports){module.exports=c;try{j=require("crypto")}catch(a){}}else"function"==typeof define&&define.amd&&define(function(){return c})}([],Math);
core.randi = function(min, max) {
return Math.floor(Math.random()*(max-min)+min);
}
core.randf = function(min, max) {
return Math.random()*(max-min)+min;
}
core.sample = function(lst) {
var ix = core.randi(0,lst.length);
return lst[ix];
}
// https://stackoverflow.com/questions/2450954/how-to-randomize-shuffle-a-javascript-array
core.shuffle = function(array) {
var currentIndex = array.length, temporaryValue, randomIndex;
// While there remain elements to shuffle...
while (0 !== currentIndex) {
// Pick a remaining element...
randomIndex = Math.floor(Math.random() * currentIndex);
currentIndex -= 1;
// And swap it with the current element.
temporaryValue = array[currentIndex];
array[currentIndex] = array[randomIndex];
array[randomIndex] = temporaryValue;
}
return array;
}
// utilities for timing episodes
var WOB_REWARD_GLOBAL = 0; // what was reward in previous iteration?
var WOB_RAW_REWARD_GLOBAL = 0; // reward without time penalty
var WOB_REWARD_REASON = null; // reason for the reward
var WOB_DONE_GLOBAL = false; // a done indicator
var WOB_EPISODE_ID = 0; // number of episodes done so far
var WOB_TASK_READY = true; // override this to show that the task is not ready yet
core.EPISODE_MAX_TIME = 10000; // in ms. Set default time to 10s.
// https://stackoverflow.com/questions/3169786/clear-text-selection-with-javascript
// this piece of code clears the selection in a new episode, if a user happened
// to select some part of text. We don't want this to persist across episodes
core.clearUserSelection = function() {
if (window.getSelection) {
if (window.getSelection().empty) { // Chrome
window.getSelection().empty();
} else if (window.getSelection().removeAllRanges) { // Firefox
window.getSelection().removeAllRanges();
}
} else if (document.selection) { // IE?
document.selection.empty();
}
}
core.EP_TIMER = null; // stores timer id
core.CD_TIMER = null; // stores timer ID for displaying rewards
core.ept0 = null; // stores system time when episode begins (so we can time it)
core.cover_div = null; // cover div for synchronization
core.startEpisode = function() {
core.createDisplay();
if (core.cover_div == null) {
core.cover_div = document.createElement('div');
core.cover_div.setAttribute('id', 'sync-task-cover');
core.cover_div.innerHTML = 'START';
core.cover_div.onclick = function () {
core.startEpisodeReal();
};
document.body.appendChild(core.cover_div);
}
core.cover_div.style.display = 'block';
}
core.startEpisodeReal = function () {
core.resetRefCode();
genProblem();
WOB_DONE_GLOBAL = false;
WOB_REWARD_GLOBAL = 0;
WOB_RAW_REWARD_GLOBAL = 0;
WOB_REWARD_REASON = null;
core.clearUserSelection();
core.canvasClear();
document.body.scrollTop = document.documentElement.scrollTop = 0;
core.cover_div.style.display = 'none';
core.ept0 = new Date().getTime();
core.countdownTimer(core.EPISODE_MAX_TIME);
// start an end of episode timer
if(core.EP_TIMER !== null) { clearTimeout(core.EP_TIMER); } // reset timer if needed
core.EP_TIMER = setTimeout(function(){
core.endEpisode(-1, false, 'timed out'); // time ran out
}, core.EPISODE_MAX_TIME);
}
core.endEpisode = function(reward, time_proportional, reason) {
// stop timer and set to null, so that only one event gets rewarded
// for any given episode.
if(core.EP_TIMER !== null) {
clearTimeout(core.EP_TIMER);
core.EP_TIMER = null;
} else {
// if timer is null, don't reward anything and exit out.
return;
}
WOB_RAW_REWARD_GLOBAL = reward;
WOB_REWARD_REASON = reason;
// adjust reward based on time, so acting early is encouraged
var ept1 = new Date().getTime(); // get system time
if(typeof time_proportional === 'undefined') { time_proportional = false; }
if(time_proportional) {
var dt = ept1 - core.ept0; // difference in ms since start of ep
reward = reward * Math.max(0, 1.0 - dt/core.EPISODE_MAX_TIME);
}
WOB_REWARD_GLOBAL = reward; // add to global, to be accessed from Python
WOB_DONE_GLOBAL = true;
WOB_EPISODE_ID++;
document.getElementById('episode-id').innerHTML = WOB_EPISODE_ID;
console.log('reward: ' + WOB_REWARD_GLOBAL + ' (raw: ' + WOB_RAW_REWARD_GLOBAL + ')');
core.updateDisplay(reward);
core.clearTimer();
// start a new problem with a new timer. add a slight delay so that the problem
// isn't generated immediately, which can lead to accidental clicking.
//setTimeout(function(){
// core.startEpisode();
//}, 500);
// With the sync screen, the timeout above is redundant
core.startEpisode();
}
// returns parameters passed in the url.
// e.g. ?topic=123&name=query+string in the url would return
// QueryString["topic"]; // 123
// QueryString["name"]; // query string
// QueryString["nothere"]; // undefined (object)
core.QueryString = (function(a) {
if (a == "") return {};
var b = {};
for (var i = 0; i < a.length; ++i)
{
var p=a[i].split('=', 2);
if (p.length == 1)
b[p[0]] = "";
else
b[p[0]] = decodeURIComponent(p[1].replace(/\+/g, " "));
}
return b;
})(window.location.search.substr(1).split('&'));
core.getOpt = function(d, k, def) {
var v = d[k]
return typeof v === 'undefined' ? def : v;
}
// template used to create the reward display HUD. This HTML
// gets wrapped inside a <div id='reward-display'> element.
core.DISPLAY_HTML = `
<div class="info">
<label>Last reward:</label>
<span id='reward-last'>-</span>
</div>
<div class="info">
<label>Last 10 average:</label>
<span id='reward-avg'>-</span>
</div>
<div class="info">
<label>Time left:</label>
<span id='timer-countdown'>-</span>
</div>
<div class="info">
<label>Episodes done:</label>
<span id='episode-id'>0</span>
</div>
`;
// create element via JS; appending the HTML template
// directly to the body will cause jQuery UI elements
// to freak out.
core.createDisplay = function(){
var display = document.getElementById('reward-display');
if(display === null) {
// Click visualizer
var canvas = document.createElement('canvas');
canvas.setAttribute('id','click-canvas');
canvas.setAttribute('width',160);
canvas.setAttribute('height',210);
document.body.appendChild(canvas);
document.body.addEventListener('click', core.canvasDrawClick);
// Reward display
var newDiv = document.createElement('div');
newDiv.setAttribute('id','reward-display');
newDiv.innerHTML = core.DISPLAY_HTML;
document.body.appendChild(newDiv);
}
core.reloadDisplay();
}
// reload the display, reward stats should be persistent
// across all tasks and not just within a single task.
core.reloadDisplay = function(){
core.wob_latest = core.wob_latest || '-';
core.wob_scores = core.wob_scores || [];
if(core.wob_latest !== '-'){
var latestColor = core.computeColor(core.wob_latest);
document.getElementById('reward-last').setAttribute('style', 'color: ' + latestColor);
document.getElementById('reward-last').innerHTML = core.wob_latest.toFixed(2);
}
if(core.wob_scores.length > 0){
var avg = core.rewardAvg();
var avgColor = core.computeColor(avg);
document.getElementById('reward-avg').setAttribute('style', 'color: ' + avgColor);
document.getElementById('reward-avg').innerHTML = avg.toFixed(2);
}
}
core.updateDisplay = function(reward){
core.wob_latest = reward;
core.wob_scores.push(reward);
core.wob_scores = core.wob_scores.splice(-10); // only keep the last 10 rewards.
var avg = core.rewardAvg();
var avgColor = core.computeColor(avg);
var latestColor = core.computeColor(reward);
// update text and set the appropriate colors.
document.getElementById('reward-avg').setAttribute('style', 'color: ' + avgColor);
document.getElementById('reward-avg').innerHTML = avg.toFixed(2);
document.getElementById('reward-last').setAttribute('style', 'color: ' + latestColor);
document.getElementById('reward-last').innerHTML = reward.toFixed(2);
}
// only computes for last X tasks.
core.rewardAvg = function(){
var toCompute = core.wob_scores.slice();
var total = toCompute.reduce(function(a,b){ return a+b; });
return total/toCompute.length;
}
// use RGB values for setting CSS font color.
// red value should increase as number goes towards -1
// green value should increase as number goes towards +1.
core.computeColor = function(reward){
var red = 255;
var green = 180;
if(reward <= 0) green = parseInt(180*(1-Math.abs(reward)));
else red = parseInt(255*(1-reward));
return "rgb(" + red + "," + green + ",0);"
}
core.hideDisplay = function(){
document.getElementById('reward-display').setAttribute('style', 'display: none');
}
core.countdownTimer = function(et){
core.clearTimer();
var episodeTime = et/1000;
var currentTime = et/1000;
var intervalTime = 1000;
// update the timer immediately to display the total episode
// time on start, eg. "10 / 10s"
updateTimer();
// set an interval so that the timer text will be updated
// based on the `intervalTime` (ie. every 1sec)
core.CD_TIMER = setInterval(updateTimer, intervalTime);
function updateTimer(){
var cd = document.getElementById('timer-countdown');
if (currentTime <= 0){
cd.setAttribute('style', 'color: red');
cd.innerHTML = '0 / ' + episodeTime + 's';
window.clearInterval(core.CD_TIMER);
return;
} else {
var frac = currentTime / episodeTime, col;
if(frac > 0.75) { col = 'green'; }
else if(frac > 0.5) { col = 'orange'; }
else if(frac > 0.25) { col = 'brown'; }
else { col = 'red'; }
cd.setAttribute('style', 'color:' + col);
cd.innerHTML = currentTime + ' / ' + episodeTime + 'sec';
currentTime-=intervalTime/1000;
}
}
};
core.clearTimer = function(){
window.clearInterval(core.CD_TIMER);
var cd = document.getElementById('timer-countdown');
cd.setAttribute('style', 'color: black');
cd.innerHTML = '-';
}
// ################################
// Custom getter
core.getUtterance = function () {
var query = document.getElementById('query');
return query.textContent.replace(/\s+/g, ' ').trim();
}
core.previousDOMInfo = {};
core.nextRefCode = 1;
core.nextTextRefCode = -1;
core.resetRefCode = function () {
core.nextRefCode = 1;
core.nextTextRefCode = -1;
}
/* Returns a nested object (dict) with all visible DOM element information.
Special handling for Text nodes:
- Text nodes with only whitespaces are discarded.
- If the Text node is the only child, discard that Text node
and reassign its text to the parent Element.
- If the Text node is not the only child, it is broken into
pseudo-Elements with tag "t".
*/
core.getDOMInfo = function (baseElement) {
core.previousDOMInfo = {};
function getDOMInfoOfElement(element) {
if (element.id === 'reward-display' ||
element.id === 'sync-task-cover' ||
element.id === 'click-canvas' ||
element.id === 'query') return;
var rect = element.getBoundingClientRect();
if (rect.width == 0 || rect.height == 0) return;
var answer = {
tag: element.tagName,
left: rect.left, top: rect.top,
width: rect.width, height: rect.height,
children: [],
id: element.id,
classes: element.className,
};
// Assign ref code
if (element.dataset.wob_ref !== undefined &&
element.dataset.wob_eps === 'e' + WOB_EPISODE_ID) {
answer.ref = +element.dataset.wob_ref;
} else {
element.dataset.wob_ref = answer.ref = core.nextRefCode++;
element.dataset.wob_eps = 'e' + WOB_EPISODE_ID;
}
// Record styles
var computedStyle = window.getComputedStyle(element);
answer.bgColor = computedStyle.backgroundColor;
answer.fgColor = computedStyle.color;
// Indicate if the element is being focused on
if (document.activeElement === element) {
answer.focused = true;
}
// Indicate if the element is tampered with in this episode
if (element.dataset.tampered !== undefined &&
element.dataset.tampered == 'e' + WOB_EPISODE_ID) {
answer.tampered = true;
}
// For recording demonstrations: Record the target
if (element.dataset.recording_target) {
answer.recordingTarget = true;
}
// For <input>, also add input type and value
if (element instanceof HTMLInputElement) {
var inputType = element.type;
answer.tag += '_' + inputType;
if (inputType === 'checkbox' || inputType === 'radio') {
answer.value = element.checked;
} else {
answer.value = element.value;
}
} else if (element instanceof HTMLTextAreaElement) {
answer.value = element.value;
}
core.previousDOMInfo[answer.ref] = element;
// Read the children
var filteredChildNodes = [], textOnly = true;
element.childNodes.forEach(function (child) {
if (child instanceof Text) {
if (!/^\s*$/.test(child.data)) {
filteredChildNodes.push(child);
}
} else if (child instanceof Element) {
filteredChildNodes.push(child);
textOnly = false;
}
});
if (textOnly) {
answer.text = filteredChildNodes.map(function (x) {
return x.data.trim();
}).join(' ');
} else {
filteredChildNodes.forEach(function (child) {
if (child instanceof Text) {
addDOMInfosOfTextNode(child, answer.children);
} else {
child = getDOMInfoOfElement(child);
if (child !== undefined)
answer.children.push(child);
}
});
}
return answer;
}
function addDOMInfosOfTextNode(textNode, collection) {
// Break the text node into multiple nodes
// Each node only occupies a single rectangle boundary
var range = document.createRange();
range.selectNodeContents(textNode);
var absolute_start = range.startOffset, absolute_end = range.endOffset;
var start = absolute_start;
var itr = 0;
while (start < absolute_end) {
// Binary search on the next end point
var end_lower_bound = start + 1,
end_upper_bound = absolute_end,
l = range.getClientRects().length,
end = Math.floor((end_lower_bound * (l-1) + end_upper_bound) / l);
while (end_lower_bound <= end_upper_bound) {
range.setEnd(textNode, end);
if (range.getClientRects().length == 1) {
end_lower_bound = end + 1;
end = Math.min(end_lower_bound + 5, Math.floor((end_lower_bound + end_upper_bound) / 2));
} else {
end_upper_bound = end - 1;
end = Math.max(end_upper_bound - 5, Math.floor((end_lower_bound + end_upper_bound) / 2));
}
if (itr++ > 1000) throwTextNodeError('Text node computation stuck in an infinite loop');
}
range.setEnd(textNode, end);
var rects = range.getClientRects();
if (rects.length !== 1) throwTextNodeError('Text node computation incorrect');
var rect = rects[0], text = textNode.data.substring(start, end).trim();
if (rect.width > 0 && rect.height > 0 && text) {
var answer = {
tag: "t",
left: rect.left, top: rect.top,
width: rect.width, height: rect.height,
ref: core.nextTextRefCode--,
children: [],
text: text,
};
collection.push(answer);
}
start = end;
range.setEnd(textNode, absolute_end);
range.setStart(textNode, start);
if (itr++ > 1000) throwTextNodeError('Text node computation stuck in an infinite loop');
}
}
function throwTextNodeError(message) {
alert(message);
throw message;
}
return getDOMInfoOfElement(baseElement || document.body);
}
/* Debug: return a mapping from ref to its DOMInfo */
core.flattenDOMInfo = function (rootDomInfo, flattened) {
if (flattened == undefined) flattened = {};
flattened[rootDomInfo.ref] = rootDomInfo;
rootDomInfo.children.forEach(function (x) { core.flattenDOMInfo(x, flattened); });
return flattened;
}
/* Click on an element regardless of its location or visibility.
Args:
ref: The ref value generated by the previous call to getDOMInfo
*/
core.elementClick = function (ref) {
try {
var element = core.previousDOMInfo[ref];
core.canvasDrawElementClick(element);
if (element instanceof SVGElement) {
// SVG needs special treatment
var event = new Event('mousedown');
element.dispatchEvent(event);
var event = new Event('mouseup');
element.dispatchEvent(event);
var event = new Event('click');
element.dispatchEvent(event);
} else {
element.click();
element.focus();
}
return true;
} catch (err) {
return err.message;
}
}
// ################################
// Mouse click tracker
/* Helper: Prepare canvas for the next drawing step.
Return true if the canvas is ready.
*/
core.prepareCanvas = function () {
if (core.clickTrackCtx === undefined)
core.clickTrackCtx = document.getElementById('click-canvas').getContext('2d');
// Blur out the old content
var ctx = core.clickTrackCtx;
ctx.globalCompositeOperation = "screen";
ctx.fillStyle = "hsl(0, 0, 80)";
ctx.fillRect(0,0,160,210);
ctx.globalCompositeOperation = "source-over"; // restore default comp
return true;
}
core.canvasDrawClick = function (event) {
// Don't visualize the click on the sync cover
if (event.target === core.cover_div) return;
// Note that the element is clicked
event.target.dataset.tampered = 'e' + WOB_EPISODE_ID;
// Don't visualize elementClick or clicks outside the bound
if (!event.isTrusted || event.pageX > 160 || event.pageY > 210) return;
// Draw!
if (!core.prepareCanvas()) return;
var ctx = core.clickTrackCtx;
ctx.beginPath();
ctx.arc(event.pageX, event.pageY, 5, 0,2*Math.PI);
ctx.fillStyle = "rgba(100, 100, 255, 0.8)";
ctx.fill();
}
core.canvasDrawElementClick = function (element) {
if (!core.prepareCanvas()) return;
var rect = element.getBoundingClientRect()
var ctx = core.clickTrackCtx;
ctx.fillStyle = "rgba(100, 100, 255, 0.8)";
ctx.fillRect(rect.left, rect.top, rect.width, rect.height);
}
core.canvasClear = function () {
if (core.clickTrackCtx === undefined)
core.clickTrackCtx = document.getElementById('click-canvas').getContext('2d');
var ctx = core.clickTrackCtx;
ctx.fillStyle = "white";
ctx.fillRect(0,0,160,210);
}
// ################################
// Attention visualization
// Coordinates (may be changed in the future)
var ROW_TO_Y = [54, 62, 70, 78, 86, 94, 102, 110, 118, 126, 134, 142, 150, 158, 166, 174, 182, 190, 198, 206];
var COL_TO_X = [4, 12, 20, 28, 36, 44, 52, 60, 68, 76, 84, 92, 100, 108, 116, 124, 132, 140, 148, 156];
/* Visualize the attention.
Args:
values: 2d array of shape (num_grid_rows, num_grid_cols)
*/
core.visualizeAttention = function (values) {
if (core.attentionCtx === undefined) {
var canvas = document.createElement('canvas');
canvas.setAttribute('id','attention-canvas');
canvas.setAttribute('width',160);
canvas.setAttribute('height',210);
document.body.appendChild(canvas);
core.attentionCtx = canvas.getContext('2d');
}
var ctx = core.attentionCtx;
ctx.clearRect(0,0,160,210);
values.forEach(function (row, i) {
var y = ROW_TO_Y[i];
row.forEach(function (cell, j) {
var x = COL_TO_X[j];
ctx.fillStyle = "hsl(0,0%," + (cell * 100) + "%)";
ctx.fillRect(x-3,y-3,6,6);
});
});
}
// ################################
// Train-test split
// genProblem can read this variable when generating a problem
var WOB_DATA_MODE = 'default'; // dataset distribution to sample the problem from
core.setDataMode = function (mode) {
WOB_DATA_MODE = mode;
}
// Can also set the mode with "?mode=..." in the URL
if (core.QueryString.mode) {
core.setDataMode(core.QueryString.mode);
}
// ################################
// Record demonstrations (import core/record.js)
core.addRecordScript = function () {
// record script
var script = document.createElement('script');
script.type = 'text/javascript';
script.src = '../core/record.js';
document.head.appendChild(script);
}
// Enable demonstration recording with "?record=..." in the URL
if (core.QueryString.record) {
core.addRecordScript();
}