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comparison lib/js/urweb.js @ 1559:df6a7a22760a

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New Basis functions: preventDefault and stopPropagation (code contributed by Vladimir Shabanov)
author Adam Chlipala <adam@chlipala.net>
date Sun, 11 Sep 2011 14:14:49 -0400
parents e1f5d9c4cc20
children f403e129c276
comparison
equal deleted inserted replaced
1558:6fe6bda2b928 1559:df6a7a22760a
213 // Document events 213 // Document events
214 214
215 function uw_handler(name, f) { 215 function uw_handler(name, f) {
216 var old = document[name]; 216 var old = document[name];
217 if (old == undefined) 217 if (old == undefined)
218 document[name] = function() { execF(f); return false; }; 218 document[name] = function(event) { uw_event = event; execF(f); };
219 else 219 else
220 document[name] = function() { old(); execF(f); return false; }; 220 document[name] = function(event) { uw_event = event; old(); execF(f); };
221 } 221 }
222 222
223 function uw_onClick(f) { 223 function uw_onClick(f) {
224 uw_handler("onclick", f); 224 uw_handler("onclick", f);
225 } 225 }
237 } 237 }
238 238
239 function uw_keyHandler(name, f) { 239 function uw_keyHandler(name, f) {
240 var old = document[name]; 240 var old = document[name];
241 if (old == undefined) 241 if (old == undefined)
242 document[name] = function(event) { uw_event = event; execF(execF(f, kc())); return false; }; 242 document[name] = function(event) { uw_event = event; execF(execF(f, kc())); };
243 else 243 else
244 document[name] = function(event) { uw_event = event; old(); execF(execF(f, kc())); return false; }; 244 document[name] = function(event) { uw_event = event; old(); execF(execF(f, kc())); };
245 } 245 }
246 246
247 function uw_onKeydown(f) { 247 function uw_onKeydown(f) {
248 uw_keyHandler("onkeydown", f); 248 uw_keyHandler("onkeydown", f);
249 } 249 }
254 254
255 function uw_onKeyup(f) { 255 function uw_onKeyup(f) {
256 uw_keyHandler("onkeyup", f); 256 uw_keyHandler("onkeyup", f);
257 } 257 }
258 258
259 // Cancelling of further event processing
260
261 function uw_preventDefault() {
262 var e = window.event ? window.event : uw_event;
263 e.returnValue = false;
264 if (e.preventDefault) e.preventDefault();
265 }
266
267 function uw_stopPropagation() {
268 var e = window.event ? window.event : uw_event;
269 e.cancelBubble = true;
270 if (e.stopPropagation) e.stopPropagation();
271 }
259 272
260 // Embedding closures in XML strings 273 // Embedding closures in XML strings
261 274
262 function cs(f) { 275 function cs(f) {
263 return {closure: f}; 276 return {closure: f};