Adding ABP core modules to ABP/Opera

button.js

 const button = {
         update: function(url) {
                 var url = opera.extension.tabs.getSelected().url;
                 if(url) {
                         if(whitelist.check(url))
                                 buttonElement.icon = '/images/icon18.png';
                         else
                                 buttonElement.icon = '/images/icon_green18.png';
                 }
                 else
                         buttonElement.icon = '/images/icon_yellow18.png';
         },
         click: function() {

[Felix Dahlke, 2012/10/10 12:11:22]

This is just an alias for update() that's just used once, below. We can remove
this and just use update() instead.

[Wladimir Palant, 2012/10/11 09:36:26]

I didn't change this file, merely renamed it because I thought that we might
want to use that code. It is currently unused however, it has to be taken care
of when the UI is migrated - not sure we will keep it at all then.

                 this.update();
         },
         enable: function() {
                 preferences.bool('button', true);
                 this.display();
         },
         disable: function() {
                 preferences.bool('button', false);
                 opera.contexts.toolbar.removeItem(buttonElement);
                 
@@ skipping 10 matching lines @@
                         opera.contexts.toolbar.addItem(buttonElement);
                         
                         opera.extension.windows.addEventListener('focus', button.update, false);
                         opera.extension.tabs.addEventListener('focus', button.update, false);
                         window.setInterval(button.update, 1000);
                 }
         }
 };
 var properties = {
         disabled: true,
         icon: '/images/icon18.png',

[Felix Dahlke, 2012/10/10 12:11:22]

update() is called soon, overwriting the icon property, so we don't need to set
it here. Unless createItem() demands it.

         title: translate.get('ext_name')
 };
 var buttonElement = opera.contexts.toolbar.createItem(properties);
 buttonElement.addEventListener('click', button.click(), false);
 
 button.display();