popup.js

   1 // Written by Mike Frysinger <vapier@gmail.com>.  Released into the public domain.
   2
   3 var url_base, user, pass;
   4
   5 function fetchpage(url, callback) {
   6         url = url_base + '/' + url;
   7
   8         var xhr = new XMLHttpRequest();
   9         xhr.setstatus = false;
  10         try {
  11                 xhr.onreadystatechange = function(state) {
  12                         if (xhr.readyState == 4) {
  13                                 if (xhr.status == 200) {
  14                                         callback(xhr, state);
  15                                 } else {
  16                                         xhr.setstatus = true;
  17                                         setstatus(
  18                                                 'Could not connect;<br>check your ' +
  19                                                 '<a id="open-settings" href="">settings</a>'
  20                                         );
  21                                         document.getElementById('open-settings').onclick = open_settings_page;
  22                                         console.log('connect error', state);
  23                                 }
  24                         }
  25                 }
  26                 xhr.onerror = function(error) {
  27                         if (!xhr.setstatus)
  28                                 setstatus('onerror; see console');
  29                         console.log('xhr error:', error);
  30                 }
  31
  32                 console.log('fetching', url)
  33                 xhr.withCredentials = true;
  34                 xhr.open('GET', url, true, user, pass);
  35                 xhr.responseType = 'document';
  36                 // The user/pass options above don't seem to work, so do it ourselves.
  37                 xhr.setRequestHeader('Authorization', 'Basic ' + btoa(user + ':' + pass));
  38                 xhr.send();
  39         } catch(e) {
  40                 setstatus('Exception; see console');
  41                 console.log('exception:', e);
  42         }
  43 }
  44
  45 function get_css_var(key) { return getComputedStyle(document.documentElement).getPropertyValue(`--${key}`); }
  46
  47 function onoff(o) {
  48         const data = o.toUpperCase();
  49         switch (data) {
  50         case 'OFF':
  51                 return 'ON';
  52         case 'ON':
  53                 return 'OFF';
  54         default:
  55                 // For example, cycle uses CCL.
  56                 return data;
  57         }
  58 }
  59
  60 function toggleit(button) {
  61         const outlet_num = button.id.split(':')[0];
  62         var old_status = button.data;
  63         var new_status = onoff(button.data);
  64         var url = 'outlet?' + outlet_num + '=' + new_status;
  65
  66         if (!button.id.endsWith('cycle')) {
  67                 const cycler = document.getElementById(`${button.id}:cycle`);
  68                 cycler.style.display = new_status === 'ON' ? 'block' : 'none';
  69         }
  70
  71         fetchpage(url, function(xhr, state) {
  72                 console.log('switch ' + outlet_num + ': ' + old_status + ' -> ' + new_status);
  73                 if (!button.id.endsWith('cycle')) {
  74                         button.value = 'Switch ' + old_status;
  75                         button.data = new_status;
  76                 }
  77         });
  78 }
  79 function toggle() {
  80         toggleit(this);
  81 }
  82
  83 function toggle_confirmed() {
  84         clearTimeout(this.timeout);
  85         this.onclick = toggle_confirm;
  86         toggleit(this);
  87 }
  88
  89 function toggle_confirm() {
  90         var button = this;
  91         this.onclick = toggle_confirmed;
  92         this.oldvalue = this.value;
  93         this.value = 'Confirm!?';
  94         this.timeout = setTimeout(function() {
  95                 button.value = button.oldvalue;
  96                 button.onclick = toggle_confirm;
  97         }, 5000);
  98 }
  99
 100 /* Toggle the selected theme. */
 101 function toggle_theme() {
 102         const theme = get_css_var('theme') == 'light' ? 'dark' : 'light';
 103         const css = $('link#theme-override');
 104         css.href = `css/${theme}.css`;
 105         storage.set({theme});
 106         return false;
 107 }
 108
 109 function initpopup(xhr, state) {
 110         var tbl = document.getElementById('buttons');
 111         var row, cell, button;
 112
 113         console.log(xhr, state);
 114
 115         // There is no clean API for extracting the current state.
 116         // Example result:
 117         /*
 118                 <tr>
 119                 <th bgcolor="#DDDDFF" align=left>
 120                 Controller: !!!Web Power Switch 6
 121                 </th>
 122                 </tr>
 123         */
 124
 125         var th, ths = state.currentTarget.responseXML.querySelectorAll('th');
 126         for (var i = 0; th = ths[i]; ++i) {
 127                 if (th.bgColor != '#DDDDFF')
 128                         continue;
 129
 130                 var controller_name = th.innerText.trim();
 131                 if (controller_name.slice(0, 12) != 'Controller: ')
 132                         continue;
 133
 134                 row = tbl.insertRow(-1);
 135                 cell = row.insertCell(-1);
 136                 cell.colSpan = 10;
 137                 cell.align = 'center';
 138
 139                 const a = document.createElement('a');
 140                 a.href = url_base;
 141                 a.target = '_blank';
 142                 a.text = controller_name.slice(12).trim();
 143                 cell.appendChild(a);
 144
 145                 const button = document.createElement('button');
 146                 button.name = 'theme';
 147                 button.onclick = toggle_theme;
 148                 cell.appendChild(button);
 149         }
 150
 151         var tr, trs = state.currentTarget.responseXML.querySelectorAll('tr');
 152         for (var i = 0; tr = trs[i]; ++i) {
 153                 if (tr.bgColor != '#F4F4F4')
 154                         continue;
 155
 156                 var outlet_num     = tr.children[0].innerText.trim();
 157                 var outlet_name    = tr.children[1].innerText.trim();
 158                 var current_status = tr.children[2].innerText.trim();
 159                 var new_status     = tr.children[3].innerText.trim();
 160                 var confirmable    = tr.children[3].children[0].hasAttribute('onclick');
 161
 162                 row = tbl.insertRow(-1);
 163                 cell = row.insertCell(-1);
 164                 if (outlet_name === '')
 165                         cell.innerHTML = '<i>unnamed</i>';
 166                 else
 167                         cell.innerText = outlet_name + ':';
 168                 cell = row.insertCell(-1);
 169                 button = document.createElement('input');
 170                 button.type = 'button';
 171                 button.id = outlet_num;
 172                 button.value = new_status;
 173                 button.data = current_status;
 174                 button.onclick = confirmable ? toggle_confirm : toggle;
 175                 cell.appendChild(button);
 176
 177                 // The switch only allows cycling when it's on.
 178                 cell = row.insertCell(-1);
 179                 button = document.createElement('input');
 180                 button.type = 'button';
 181                 button.id = `${outlet_num}:cycle`;
 182                 button.value = '🗘';
 183                 button.data = 'CCL';
 184                 button.title = 'Power cycle';
 185                 button.onclick = confirmable ? toggle_confirm : toggle;
 186                 if (current_status.toUpperCase() === 'OFF') {
 187                         button.style.display = 'none';
 188                 }
 189                 button.style.fontSize = 'smaller';
 190                 cell.appendChild(button);
 191         }
 192
 193         setstatus();
 194 }
 195
 196 function setstatus(msg) {
 197         var status = document.getElementById('status');
 198         status.innerHTML = msg;
 199         status.style.visibility = msg ? '' : 'hidden';
 200         status.style.float      = msg ? '' : 'left';
 201         status.style.position   = msg ? '' : 'absolute';
 202 }
 203
 204 function open_settings_page() {
 205         chrome.runtime.openOptionsPage();
 206 }
 207
 208 document.addEventListener('DOMContentLoaded', function() {
 209         storage.get(settings_keys, function(settings_storage) {
 210                 const settings = Object.assign({}, settings_defaults, settings_storage);
 211                 url_base = settings['url'];
 212                 user = settings['user'];
 213                 pass = settings['pass'];
 214                 chrome.permissions.contains({
 215                         origins: [url_base + '/*']
 216                 }, function(granted) {
 217                         if (granted) {
 218                                 fetchpage('index.htm', initpopup);
 219                         } else {
 220                                 setstatus(
 221                                         'Missing permissions;<br>please visit the ' +
 222                                         '<a id="open-settings" href="">settings page</a>' +
 223                                         '<br>to grant access.<br>' +
 224                                         '<center><input id=retry type=submit value=Retry></center>'
 225                                 );
 226                                 document.getElementById('open-settings').onclick = open_settings_page;
 227                                 // Work around http://crbug.com/125706.
 228                                 document.getElementById('retry').onclick = function() {
 229                                         chrome.permissions.request({origins: [url_base + '/*']});
 230                                         fetchpage('index.htm', initpopup);
 231                                 };
 232                         }
 233                 });
 234         });
 235 });