topo2NodeModel.js
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/*
* Copyright 2016-present Open Networking Laboratory
*
* 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.
*/
/*
ONOS GUI -- Topology Layout Module.
Module that contains the d3.force.layout logic
*/
(function () {
'use strict';
var randomService;
var fn;
//internal state;
var defaultLinkType = 'direct',
nearDist = 15;
function positionNode(node, forUpdate) {
var meta = node.metaUi,
x = meta && meta.x,
y = meta && meta.y,
dim = [800, 600],
xy;
// if the device contains explicit LONG/LAT data, use that to position
if (setLongLat(node)) {
//indicate we want to update cached meta data...
return true;
}
// else if we have [x,y] cached in meta data, use that...
if (x !== undefined && y !== undefined) {
node.fixed = true;
node.px = node.x = x;
node.py = node.y = y;
return;
}
// if this is a node update (not a node add).. skip randomizer
if (forUpdate) {
return;
}
// Note: Placing incoming unpinned nodes at exactly the same point
// (center of the view) causes them to explode outwards when
// the force layout kicks in. So, we spread them out a bit
// initially, to provide a more serene layout convergence.
// Additionally, if the node is a host, we place it near
// the device it is connected to.
function rand() {
return {
x: randomService.randDim(dim[0]),
y: randomService.randDim(dim[1])
};
}
function near(node) {
return {
x: node.x + nearDist + randomService.spread(nearDist),
y: node.y + nearDist + randomService.spread(nearDist)
};
}
function getDevice(cp) {
// console.log(cp);
// var d = lu[cp.device];
// return d || rand();
return rand();
}
xy = (node.class === 'host') ? near(getDevice(node.cp)) : rand();
angular.extend(node, xy);
}
function setLongLat(node) {
var loc = node.location,
coord;
if (loc && loc.type === 'lnglat') {
coord = [0, 0];
node.fixed = true;
node.px = node.x = coord[0];
node.py = node.y = coord[1];
return true;
}
}
angular.module('ovTopo2')
.factory('Topo2NodeModel',
['Topo2Model', 'FnService', 'RandomService',
function (Model, _fn_, _RandomService_) {
randomService = _RandomService_;
fn = _fn_;
return Model.extend({
initialize: function () {
this.node = this.createNode();
},
svgClassName: function () {
return fn.classNames('node', this.nodeType, this.get('type'), {
online: this.get('online')
});
},
createNode: function () {
var node = angular.extend({}, this.attributes);
// Augment as needed...
node.class = this.nodeType;
node.svgClass = this.svgClassName();
positionNode(node);
return node;
}
});
}]
);
})();