Class: Index

Inherits:
WebPage show all
Defined in:
lib/h2g_ajaxchat.rb

Instance Attribute Summary

Attributes inherited from WebPage

#css, #s

Instance Method Summary collapse

Methods inherited from WebPage

#to_js, #to_s

Constructor Details

#initialize(h) ⇒ Index

Returns a new instance of Index.



220
221
222
 
# File 'lib/h2g_ajaxchat.rb', line 220

def initialize(h)
  @h = h
end

Instance Method Details

#html ⇒ Object 



224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
 
# File 'lib/h2g_ajaxchat.rb', line 224

def html()
  
@html ||= <<EOF
<body onload="refresh()">
<div id="wrapper">
 <div id="menu">
  <p class="welcome">Welcome, <b> <%= @h[:username] %> </b></p>
  <p class="logout"><a id="exit" href="logout">Exit Chat</a></p>
  <div style="clear:both"></div>
 </div>	
 <div id="chatbox"></div>
  <input name="usermsg" type="text" id="usermsg" size="33" onkeyup='ajaxCall1(event.keyCode, this)' autofocus='true'/>

</div>      
EOF

end

#js ⇒ Object 



255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
 
# File 'lib/h2g_ajaxchat.rb', line 255

def js()
  
@js ||= <<EOF

function updateScroll(){
  var element = document.getElementById("chatbox");
  element.scrollTop = element.scrollHeight;
}  
// ajaxCall1();

function ajaxRequest(url, cFunction) {
var xhttp;
xhttp = new XMLHttpRequest();
xhttp.onreadystatechange = function() {
  if (this.readyState == 4 && this.status == 200) {
    cFunction(this);
  }
};
xhttp.open("GET", url, true);
xhttp.send();
}


function ajaxCall1(keyCode, e) {
if (keyCode==13){
  ajaxRequest('chatter?msg=' + e.value, ajaxResponse1)
  e.value = '';
}  
}

function ajaxResponse1(xhttp) {
e = document.getElementById('chatbox')
s = xhttp.responseText;
e.innerHTML = e.innerHTML + s;

if (s.length > 1)
  updateScroll();
}

function refresh() {
setInterval(ajaxCall2,2000);
}

function ajaxCall2() {
ajaxRequest('chatter', ajaxResponse1)
}

EOF

end

#to_css ⇒ Object 



242
243
244
245
246
247
248
 
# File 'lib/h2g_ajaxchat.rb', line 242

def to_css()
@css ||= '
body {font-family: Arial;}
#chatbox {overflow: scroll; height: 40%}
div p span {colour: #dde}
'
end

#to_html ⇒ Object 



250
251
252
253
 
# File 'lib/h2g_ajaxchat.rb', line 250

def to_html()
  
  super()
end