diff options
Diffstat (limited to 'public/javascripts')
| -rw-r--r-- | public/javascripts/application.js | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/public/javascripts/application.js b/public/javascripts/application.js index 6cea8f3dd..a88856ea6 100644 --- a/public/javascripts/application.js +++ b/public/javascripts/application.js @@ -255,6 +255,49 @@ function observeProjectModules() { Event.observe('project_enabled_module_names_issue_tracking', 'change', f); } +/* + * Class used to warn user when leaving a page with unsaved textarea + * Author: mathias.fischer@berlinonline.de +*/ + +var WarnLeavingUnsaved = Class.create({ + observedForms: false, + observedElements: false, + changedForms: false, + message: null, + + initialize: function(message){ + this.observedForms = $$('form'); + this.observedElements = $$('textarea'); + this.message = message; + + this.observedElements.each(this.observeChange.bind(this)); + this.observedForms.each(this.submitAction.bind(this)); + + window.onbeforeunload = this.unload.bind(this); + }, + + unload: function(){ + if(this.changedForms) + return this.message; + }, + + setChanged: function(){ + this.changedForms = true; + }, + + setUnchanged: function(){ + this.changedForms = false; + }, + + observeChange: function(element){ + element.observe('change',this.setChanged.bindAsEventListener(this)); + }, + + submitAction: function(element){ + element.observe('submit',this.setUnchanged.bindAsEventListener(this)); + } +}); /* shows and hides ajax indicator */ Ajax.Responders.register({ |