PushTopic Management with Apex + Visualfroce

PushTopicController.cls

public with sharing class PushTopicController {

	public List<PushTopic> pushtopics {get; set;}
	public PushTopic currentPushTopic {get; set;}
	
	public String editTopicId {get; set;}

	public PushTopicController() {
		pushtopics = new List<PushTopic>();
		pushtopics = [SELECT Id, Name, Query, Description, ApiVersion, NotifyForOperations, NotifyForFields from PushTopic];
		currentPushTopic = null;
		editTopicId = '';
	}
	
	public PageReference setCurrentTopic() {
		if(editTopicId == 'New') { currentPushTopic = new PushTopic(ApiVersion=26.0,NotifyForOperations='All',NotifyForFields='Referenced'); }
		else {
			for(PushTopic t : pushtopics) {
				if(t.Id == Id.valueOf(editTopicId)) { currentPushTopic = t; }
			}
		}
		return null;
	}
	
	public PageReference saveCurrentTopic() {
		try {
			upsert currentPushTopic;
			pushtopics = [SELECT Id, Name, Query, Description, ApiVersion, NotifyForOperations, NotifyForFields from PushTopic];	
			currentPushTopic = null;
			return null;
		} catch (Exception e) {
			return null;
		}
		
	}
	
	public PageReference deleteCurrentTopic() {
		delete currentPushTopic;
		pushtopics = [SELECT Id, Name, Query, Description, ApiVersion, NotifyForOperations, NotifyForFields from PushTopic];	
		currentPushTopic = null;
		return null;
	}
	
	public PageReference cancelCurrentTopic() {
		currentPushTopic = null;
		return null;
	}
	
	
	@isTest
	static public void testTopicController() {
		PushTopic pushTopic = new PushTopic();
		pushTopic.Name = 'Accounts';
		pushTopic.Description = 'All records for the Account object';
		pushtopic.Query = 'SELECT Id, Name from Account';
		pushTopic.ApiVersion = 26.0;
		pushTopic.NotifyForOperations = 'All';
		pushTopic.NotifyForFields = 'Referenced';
		
		insert pushTopic;
		
		PushTopicController ptc = new PushTopicController();
		ptc.editTopicId = 'New';
		
		ptc.setCurrentTopic();
		System.assertNotEquals(ptc.currentPushTopic,null);
		
		ptc.cancelCurrentTopic();
		System.assertEquals(ptc.currentPushTopic,null);
		
		ptc.editTopicId = pushTopic.Id;
		
		ptc.setCurrentTopic();
		System.assertNotEquals(ptc.currentPushTopic,null);
		
		ptc.saveCurrentTopic();
		System.assertEquals(ptc.currentPushTopic,null);
		
		ptc.editTopicId = pushTopic.Id;
		ptc.setCurrentTopic();
		ptc.deleteCurrentTopic();
		
		System.assertEquals(ptc.pushTopics.size(),0);
		
	}

}

PushTopics.jsp

<apex:page controller="PushTopicController">
  
	<style> 
	#topicsList input, .long { 
				width: 200px; 
				} 
	#topicsList { 
				list-style: none;
		        padding: 0;
		}
	#topicsList li {
				margin-bottom: 5px;
				color: #999;
	}			
	</style>
	
	<div id="page" style="width: 700px;">
	<apex:form>
	
	
	<apex:outputPanel id="list" >
	<div style="float: left; width: 250px;">
		<UL id="topicsList">
		<apex:repeat value="{!pushtopics}" var="topic">
		<LI><apex:commandButton action="{!setCurrentTopic}" rerender="object, list" value="{!topic.Name}" disabled="{!currentPushTopic != null}">
						<apex:param name="topicId{!topic.Id}" value="{!topic.Id}" assignTo="{!editTopicId}" />
			</apex:commandButton><BR />
			<apex:outputText value="{!topic.Description}" /><BR />
		</LI>
		</apex:repeat>
		<LI><apex:commandButton action="{!setCurrentTopic}" rerender="object, list" value="New Topic" disabled="{!currentPushTopic != null}">
							<apex:param value="New" assignTo="{!editTopicId}" />
			</apex:commandButton></LI>
		</UL>
	
	</div>
	</apex:outputPanel>
	
	<apex:outputPanel id="object" >
	<div style="float: right; width: 350px;">
	<apex:outputPanel id="form" rendered="{!currentPushTopic != null}" >
	<apex:pageBlock>
	
	<apex:PageBlockButtons>
		<apex:commandButton action="{!saveCurrentTopic}" rerender="object, list" value="Upsert" />
		<apex:actionRegion>
			<apex:commandButton onmousedown="if(confirm('Really?')){deleteCurrentTopic();}" value="Delete" disabled="{!currentPushTopic.Id == null}" />
			<apex:actionFunction action="{!deleteCurrentTopic}" name="deleteCurrentTopic" rerender="object, list" />		
		</apex:actionRegion>
		<apex:actionRegion>
			<apex:commandButton action="{!cancelCurrentTopic}" rerender="object, list" value="Cancel" />
		</apex:actionRegion>
	</apex:PageBlockButtons>
	
	<apex:pageBlockSection>
	<apex:inputField value="{!currentPushTopic.Name}" /><BR />
	<apex:inputField value="{!currentPushTopic.Description}" /><BR />
	<apex:inputField value="{!currentPushTopic.Query}"  /><BR />
	<apex:inputField value="{!currentPushTopic.ApiVersion}" /><BR />	
	<apex:inputField value="{!currentPushTopic.NotifyForOperations}" />
		<em>a = 'all', c = 'create', u = 'update'</em><BR />
	<apex:inputField value="{!currentPushTopic.NotifyForFields}" />
		<em>s = 'select', w = 'where', r = 'referenced', a = 'all'</em><BR />
	
	</apex:pageBlockSection>
	
	</apex:pageBlock>
		
		
	</apex:outputPanel>
	</div>
	</apex:outputPanel>
	</apex:form>
	</div>

</apex:page>