mirror of https://github.com/jeelabs/esp-link.git
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2fd2072411
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//===== Collection of small utilities
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/* |
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* Bind/Unbind events |
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* |
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* Usage: |
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* var el = document.getElementyById('#container'); |
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* bnd(el, 'click', function() { |
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* console.log('clicked'); |
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* }); |
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*/ |
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var bnd = function( |
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d, // a DOM element
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e, // an event name such as "click"
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f // a handler function
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){ |
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d.addEventListener(e, f, false); |
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} |
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/* |
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* Create DOM element |
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* |
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* Usage: |
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* var el = m('<h1>Hello</h1>'); |
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* document.body.appendChild(el); |
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* |
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* Copyright (C) 2011 Jed Schmidt <http://jed.is> - WTFPL
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* More: https://gist.github.com/966233
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*/ |
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var m = function( |
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a, // an HTML string
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b, // placeholder
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c // placeholder
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){ |
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b = document; // get the document,
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c = b.createElement("p"); // create a container element,
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c.innerHTML = a; // write the HTML to it, and
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a = b.createDocumentFragment(); // create a fragment.
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while ( // while
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b = c.firstChild // the container element has a first child
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) a.appendChild(b); // append the child to the fragment,
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return a // and then return the fragment.
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} |
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/* |
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* DOM selector |
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* |
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* Usage: |
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* $('div'); |
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* $('#name'); |
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* $('.name'); |
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* |
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* Copyright (C) 2011 Jed Schmidt <http://jed.is> - WTFPL
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* More: https://gist.github.com/991057
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*/ |
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var $ = function( |
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a, // take a simple selector like "name", "#name", or ".name", and
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b // an optional context, and
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){ |
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a = a.match(/^(\W)?(.*)/); // split the selector into name and symbol.
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return( // return an element or list, from within the scope of
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b // the passed context
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|| document // or document,
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)[ |
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"getElement" + ( // obtained by the appropriate method calculated by
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a[1] |
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? a[1] == "#" |
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? "ById" // the node by ID,
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: "sByClassName" // the nodes by class name, or
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: "sByTagName" // the nodes by tag name,
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) |
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]( |
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a[2] // called with the name.
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) |
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} |
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/* |
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* Get cross browser xhr object |
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* |
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* Copyright (C) 2011 Jed Schmidt <http://jed.is>
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* More: https://gist.github.com/993585
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*/ |
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var j = function( |
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a // cursor placeholder
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){ |
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for( // for all a
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a=0; // from 0
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a<4; // to 4,
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a++ // incrementing
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) try { // try
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return a // returning
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? new ActiveXObject( // a new ActiveXObject
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[ // reflecting
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, // (elided)
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"Msxml2", // the various
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"Msxml3", // working
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"Microsoft" // options
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][a] + // for Microsoft implementations, and
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".XMLHTTP" // the appropriate suffix,
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) // but make sure to
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: new XMLHttpRequest // try the w3c standard first, and
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} |
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catch(e){} // ignore when it fails.
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} |
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// createElement short-hand
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e = function(a) { return document.createElement(a); } |
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// chain onload handlers
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function onLoad(f) { |
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var old = window.onload; |
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if (typeof old != 'function') { |
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window.onload = f; |
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} else { |
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window.onload = function() { |
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old(); |
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f(); |
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} |
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} |
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} |
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//===== helpers to add/remove/toggle HTML element classes
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function addClass(el, cl) { |
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el.className += ' ' + cl; |
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} |
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function removeClass(el, cl) { |
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var cls = el.className.split(/\s+/), |
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l = cls.length; |
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for (var i=0; i<l; i++) { |
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if (cls[i] === cl) cls.splice(i, 1); |
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} |
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el.className = cls.join(' '); |
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return cls.length != l |
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} |
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function toggleClass(el, cl) { |
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if (!removeClass(el, cl)) addClass(el, cl); |
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} |
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//===== AJAX
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function ajaxReq(method, url, ok_cb, err_cb) { |
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var xhr = j(); |
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xhr.open(method, url, true); |
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var timeout = setTimeout(function() { |
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xhr.abort(); |
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console.log("XHR abort:", method, url); |
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xhr.status = 599; |
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xhr.responseText = "request time-out"; |
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}, 9000); |
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xhr.onreadystatechange = function() { |
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if (xhr.readyState != 4) { return; } |
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clearTimeout(timeout); |
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if (xhr.status >= 200 && xhr.status < 300) { |
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console.log("XHR done:", method, url, "->", xhr.status); |
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ok_cb(xhr.responseText); |
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} else { |
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console.log("XHR ERR :", method, url, "->", xhr.status, xhr.responseText, xhr); |
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err_cb(xhr.status, xhr.responseText); |
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} |
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} |
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console.log("XHR send:", method, url); |
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try { |
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xhr.send(); |
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} catch(err) { |
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console.log("XHR EXC :", method, url, "->", err); |
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err_cb(599, err); |
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} |
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} |
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function dispatchJson(resp, ok_cb, err_cb) { |
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var j; |
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try { j = JSON.parse(resp); } |
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catch(err) { |
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console.log("JSON parse error: " + err + ". In: " + resp); |
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err_cb(500, "JSON parse error: " + err); |
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return; |
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} |
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ok_cb(j); |
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} |
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function ajaxJson(method, url, ok_cb, err_cb) { |
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ajaxReq(method, url, function(resp) { dispatchJson(resp, ok_cb, err_cb); }, err_cb); |
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} |
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function ajaxSpin(method, url, ok_cb, err_cb) { |
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$("#spinner").removeAttribute('hidden'); |
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ajaxReq(method, url, function(resp) { |
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$("#spinner").setAttribute('hidden', ''); |
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ok_cb(resp); |
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}, function(status, statusText) { |
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$("#spinner").setAttribute('hidden', ''); |
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//showWarning("Error: " + statusText);
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err_cb(status, statusText); |
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}); |
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} |
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function ajaxJsonSpin(method, url, ok_cb, err_cb) { |
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ajaxSpin(method, url, function(resp) { dispatchJson(resp, ok_cb, err_cb); }, err_cb); |
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} |
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//===== main menu, header spinner and notification boxes
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onLoad(function() { |
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var l = $("#layout"); |
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var o = l.childNodes[0]; |
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// spinner
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l.insertBefore(m('<div id="spinner" class="spinner" hidden></div>'), o); |
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// notification boxes
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l.insertBefore(m( |
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'<div id="messages"><div id="warning" hidden></div><div id="notification" hidden></div></div>'), o); |
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// menu hamburger button
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l.insertBefore(m('<a href="#menu" id="menuLink" class="menu-link"><span></span></a>'), o); |
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// menu left-pane
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var mm = m( |
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'<div id="menu">\ |
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<div class="pure-menu">\ |
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<a class="pure-menu-heading" href="https://github.com/jeelabs/esp-link">\ |
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<img src="/favicon.ico" height="32"> esp-link</a>\ |
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<ul id="menu-list" class="pure-menu-list"></ul>\ |
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</div>\ |
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</div>\ |
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'); |
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l.insertBefore(mm, o); |
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// make hamburger button pull out menu
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var ml = $('#menuLink'), mm = $('#menu'); |
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bnd(ml, 'click', function (e) { |
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console.log("hamburger time"); |
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var active = 'active'; |
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e.preventDefault(); |
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toggleClass(l, active); |
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toggleClass(mm, active); |
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toggleClass(ml, active); |
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}); |
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// populate menu via ajax call
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var getMenu = function() { |
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ajaxJson("GET", "/menu", function(data) { |
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var html = "", path = window.location.pathname; |
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for (var i=0; i<data.menu.length; i+=2) { |
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var href = data.menu[i+1]; |
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html = html.concat(" <li class=\"pure-menu-item" + |
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(path === href ? " pure-menu-selected" : "") + "\">" + |
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"<a href=\"" + href + "\" class=\"pure-menu-link\">" + |
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data.menu[i] + "</a></li>"); |
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} |
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$("#menu-list").innerHTML = html; |
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v = $("#version"); |
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if (v != null) { v.innerHTML = data.version; } |
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}, function() { setTimeout(getMenu, 1000); }); |
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}; |
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getMenu(); |
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}); |
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//===== Wifi info
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function showWifiInfo(data) { |
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Object.keys(data).forEach(function(v) { |
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el = $("#wifi-" + v); |
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if (el != null) { |
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if (el.nodeName === "INPUT") el.value = data[v]; |
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else el.innerHTML = data[v]; |
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} |
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}); |
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var dhcp = $('#dhcp-r'+data.dhcp); |
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if (dhcp) dhcp.click(); |
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$("#wifi-spinner").setAttribute("hidden", ""); |
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$("#wifi-table").removeAttribute("hidden"); |
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currAp = data.ssid; |
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} |
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function getWifiInfo() { |
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ajaxJson('GET', "/wifi/info", showWifiInfo, |
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function(s, st) { window.setTimeout(getWifiInfo, 1000); }); |
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} |
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//===== Notifications
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function showWarning(text) { |
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var el = $("#warning"); |
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el.innerHTML = text; |
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el.removeAttribute('hidden'); |
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} |
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function hideWarning() { |
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el = $("#warning").setAttribute('hidden', ''); |
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} |
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var notifTimeout = null; |
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function showNotification(text) { |
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var el = $("#notification"); |
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el.innerHTML = text; |
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el.removeAttribute('hidden'); |
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if (notifTimeout != null) clearTimeout(notifTimeout); |
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notifTimout = setTimeout(function() { |
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el.setAttribute('hidden', ''); |
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notifTimout = null; |
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}, 4000); |
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} |
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//===== GPIO Pin mux card
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var currPin; |
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// pin={reset:12, isp:13, LED_conn:0, LED_ser:2}
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function createInputForPin(pin) { |
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var input = document.createElement("input"); |
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input.type = "radio"; |
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input.name = "pins"; |
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input.data = pin.name; |
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input.className = "pin-input"; |
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input.value= pin.value; |
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input.id = "opt-" + pin.value; |
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if (currPin == pin.name) input.checked = "1"; |
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var descr = m('<label for="opt-'+pin.value+'"><b>'+pin.name+":</b>"+pin.descr+"</label>"); |
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var div = document.createElement("div"); |
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div.appendChild(input); |
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div.appendChild(descr); |
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return div; |
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} |
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function displayPins(resp) { |
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var po = $("#pin-mux"); |
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po.innerHTML = ""; |
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currPin = resp.curr; |
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resp.map.forEach(function(v) { |
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po.appendChild(createInputForPin(v)); |
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}); |
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var i, inputs = $(".pin-input"); |
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for (i=0; i<inputs.length; i++) { |
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inputs[i].onclick = function() { setPins(this.value, this.data) }; |
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}; |
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} |
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function fetchPins() { |
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ajaxJson("GET", "/pins", displayPins, function() { |
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window.setTimeout(fetchPins, 1000); |
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}); |
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} |
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function setPins(v, name) { |
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ajaxSpin("POST", "/pins?map="+v, function() { |
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showNotification("Pin assignment changed to " + name); |
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}, function() { |
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showNotification("Pin assignment change failed"); |
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window.setTimeout(fetchPins, 100); |
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}); |
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} |
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