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/**
* Licensed under the Apache License, Version 2.0 (the "License"); you may
* not use this file except in compliance with the License. You may obtain
* a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*/
// Aggregate for common network topology functionality
horizon.networktopologycommon = {
init:function() {
horizon.networktopologyloader.init();
horizon.networktopologymessager.init();
}
};
/**
* Common data loader for network topology views
*/
horizon.networktopologyloader = {
// data for the network topology views
model: null,
// timeout length
reload_duration: 10000,
// timer controlling update intervals
update_timer: null,
init:function() {
var self = this;
if($('#networktopology').length === 0) {
return;
}
self.update();
},
/**
* makes the data reqeuest and populates the 'model'
*/
update:function() {
var self = this;
angular.element.getJSON(
angular.element('#networktopology').data('networktopology') + '?' + angular.element.now(),
function(data) {
self.model = data;
$('#networktopology').trigger('change');
self.update_timer = setTimeout(function(){
self.update();
}, self.reload_duration);
}
);
},
/**
* stops the data update sequences
*/
stop_update:function() {
var self = this;
clearTimeout(self.update_timer);
},
// Set up loader template
setup_loader: function($container) {
return horizon.loader.inline(gettext('Loading')).hide().prependTo($container);
}
};
/**
* common utility for network topology view to create iframes and pass post
* messages from those iframes
*/
horizon.networktopologymessager = {
previous_message : null,
// element to attach messages to
post_messages:'#topologyMessages',
// Array of functions to call when a message event is received
messaging_functions: [],
// data stored when a delete operation is finalizing
delete_data: {},
init:function() {
var self = this;
// listens for message events
angular.element(window).on('message', function(e) {
var message = JSON.parse(e.originalEvent.data);
if (self.previous_message !== message.message) {
horizon.toast.add(message.type, message.message);
self.previous_message = message.message;
self.delete_post_message(message.iframe_id);
self.messageNotify(message);
horizon.networktopologyloader.update();
setTimeout(function() {
self.previous_message = null;
self.delete_data = {};
},self.reload_duration);
}
});
},
/**
* add method to be called when a message is received
*
* @param {function} fn method to be called
*
* @param {Object} fnObj object the method is being called from this make
* sure the scope of 'this' is correct
*/
addMessageHandler:function(fn, fnObj) {
var self = this;
self.messaging_functions.push({obj:fnObj, func:fn});
},
/**
* calls the methods that subscribed to message notifications
*
* @param {Object} message iframe message content
*/
messageNotify:function(message) {
var self = this;
for (var i = 0; i < self.messaging_functions.length; i += 1) {
func = self.messaging_functions[i].func;
fnObj = self.messaging_functions[i].obj;
func.call(fnObj, message);
}
},
/**
* posts a message from the iframe
*
* @param {String} id target device id
* @param {String} url URL for action
* @param {Object} message object containing message value
* @param {String} action value of action, e.g., "delete"
* @param {Object} data of extra data that should be relayed with the message
* notification
*/
post_message: function(id,url,message,type,action,data) {
var self = this;
if(action == "delete") {
self.delete_data.device_id = id;
self.delete_data.device_type = type;
self.delete_data.device_data = data;
}
// stop the update refesh cycle while action takes place
horizon.networktopologyloader.stop_update();
var iframeID = 'ifr_' + id;
var iframe = $('<iframe width="500" height="300" />')
.attr('id',iframeID)
.attr('src',url)
.appendTo('#topologyMessages');
iframe.on('load',function() {
angular.element(this).get(0).contentWindow.postMessage(
JSON.stringify(message, null, 2), '*');
});
},
// delete the iframe
delete_post_message: function(id) {
angular.element('#' + id).remove();
}
};
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