Acquired Opera AdBlock code

options/whitelist.js

+if(opera.version() >= 12.1) { //Whitelist is only supported above Opera 12.1
+
+        var section = document.createElement('h3');
+        section.appendChild(document.createTextNode(translate.get('whitelist')));
+        listsParent.appendChild(section);
+
+        var descript = document.createElement('p');
+        descript.innerHTML = translate.get('whitelist_descript');
+        listsParent.appendChild(descript);
+
+        var element = document.createElement('div');
+        element.setAttribute('id', 'whitelist');
+        element.setAttribute('class', 'section');
+        listsParent.appendChild(element);
+
+        var element = document.createElement('input');
+        element.setAttribute('id', 'newWhitelist');
+        element.setAttribute('type', 'text');
+        element.setAttribute('placeholder', translate.get('whitelist_holder'));
+        listsParent.appendChild(element);
+
+        var elementParent = document.createElement('div');
+        elementParent.setAttribute('class', 'button_parent');
+        var element = document.createElement('button');
+        element.setAttribute('onClick', 'whitelist.add()');
+        element.appendChild(document.createTextNode(translate.get('save_apply')));
+        elementParent.appendChild(element)
+        listsParent.appendChild(elementParent);
+
+        const whitelist = {
+                add: function() {
+                        var rule = document.getElementById('newWhitelist').value;
+                        if(rule != "") {
+                                lists.whitelist.add(rule, true);
+                                document.getElementById('newWhitelist').value = "";
+                                opera.extension.postMessage({request: 'ping', type: 'css'});
+                                this.display();
+                        }
+                },
+                remove: function(rule) {
+                        lists.whitelist.remove(rule, true);
+                        opera.extension.postMessage({request: 'ping', type: 'css'});
+                        this.display();
+                },
+                display: function() {
+                        var container = document.createElement('div');
+                        var whitelist = lists.whitelist.get();
+                        for(i in whitelist) {
+                                var element = document.createElement('span');
+                                var removeLink = document.createElement('a');
+                                var removeButton = document.createElement('img');
+                                removeButton.setAttribute('src', '/images/remove14.png');
+                                removeButton.setAttribute('style', 'vertical-align: middle;');
+                                removeLink.appendChild(removeButton);
+                                removeLink.setAttribute('onClick', 'whitelist.remove("' + whitelist[i] +'")');
+                                element.appendChild(removeLink);
+                                element.appendChild(document.createTextNode(' ' + whitelist[i]));
+                                container.appendChild(element);
+                                var br = document.createElement('br');
+                                container.appendChild(br);
+                        }
+                        
+                        var whiteParent = document.getElementById('whitelist');
+                        whiteParent.innerHTML = '';
+                        whiteParent.appendChild(container);
+                }
+        }
+        whitelist.display();
+
+}