textsave.js
| 1 | /*
|
|---|---|
| 2 | File: textsave.js |
| 3 | |
| 4 | Description: Initialize an onbeforeunload-Event in Redmine, if changes in a form are made, but do not ask, if we submit a form |
| 5 | |
| 6 | Author: mathias.fischer@berlinonline.de |
| 7 | |
| 8 | */ |
| 9 | |
| 10 | var TextSave = Class.create({
|
| 11 | observedForms: false, |
| 12 | observedElements: false, |
| 13 | changedForms: false, |
| 14 | |
| 15 | initialize: function(){ |
| 16 | this.observedForms = $$('form'); |
| 17 | //Use #main to ignore the Search-Box
|
| 18 | this.observedElements = $$('#main textarea','#main input','#main select'); |
| 19 | |
| 20 | this.observedElements.each(this.observeChange.bind(this)); |
| 21 | this.observedForms.each(this.submitAction.bind(this)); |
| 22 | |
| 23 | //Event.stop returns "false", so we cannot use Prototypes Event.observe() here...
|
| 24 | window.onbeforeunload = this.unload.bind(this); |
| 25 | }, |
| 26 | |
| 27 | //Stuff to do before unload, confirm-box is display if a return-value is given
|
| 28 | unload: function(){ |
| 29 | if(this.changedForms) |
| 30 | return "There are unsaved changes."; |
| 31 | }, |
| 32 | |
| 33 | setChanged: function(){ |
| 34 | this.changedForms = true; |
| 35 | }, |
| 36 | |
| 37 | setUnchanged: function(){ |
| 38 | this.changedForms = false; |
| 39 | }, |
| 40 | |
| 41 | observeChange: function(element){ |
| 42 | element.observe('change',this.setChanged.bindAsEventListener(this)); |
| 43 | }, |
| 44 | |
| 45 | submitAction: function(element){ |
| 46 | element.observe('submit',this.setUnchanged.bindAsEventListener(this)); |
| 47 | } |
| 48 | |
| 49 | }); |
| 50 | |
| 51 | |
| 52 | document.observe("dom:loaded", function() { |
| 53 | new TextSave();
|
| 54 | }); |