topoForce.js
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/*
* Copyright 2015 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 Event Module.
Defines event handling for events received from the server.
*/
(function () {
'use strict';
// injected refs
var $log, sus;
// internal state
var settings,
force, // force layout object
drag, // drag behavior handler
network = {
nodes: [],
links: [],
lookup: {},
revLinkToKey: {}
};
// SVG elements;
var linkG, linkLabelG, nodeG;
// D3 selections;
var link, linkLabel, node;
// default settings for force layout
var defaultSettings = {
gravity: 0.4,
friction: 0.7,
charge: {
// note: key is node.class
device: -8000,
host: -5000,
_def_: -12000
},
linkDistance: {
// note: key is link.type
direct: 100,
optical: 120,
hostLink: 3,
_def_: 50
},
linkStrength: {
// note: key is link.type
// range: {0.0 ... 1.0}
//direct: 1.0,
//optical: 1.0,
//hostLink: 1.0,
_def_: 1.0
}
};
// force layout tick function
function tick() {
}
function selectCb() { }
function atDragEnd() {}
function dragEnabled() {}
function clickEnabled() {}
// ==========================
angular.module('ovTopo')
.factory('TopoForceService',
['$log', 'SvgUtilService',
function (_$log_, _sus_) {
$log = _$log_;
sus = _sus_;
// forceG is the SVG group to display the force layout in
// w, h are the initial dimensions of the SVG
// opts are, well, optional :)
function initForce(forceG, w, h, opts) {
$log.debug('initForce().. WxH = ' + w + 'x' + h);
settings = angular.extend({}, defaultSettings, opts);
linkG = forceG.append('g').attr('id', 'topo-links');
linkLabelG = forceG.append('g').attr('id', 'topo-linkLabels');
nodeG = forceG.append('g').attr('id', 'topo-nodes');
link = linkG.selectAll('.link');
linkLabel = linkLabelG.selectAll('.linkLabel');
node = nodeG.selectAll('.node');
force = d3.layout.force()
.size([w, h])
.nodes(network.nodes)
.links(network.links)
.gravity(settings.gravity)
.friction(settings.friction)
.charge(settings.charge._def_)
.linkDistance(settings.linkDistance._def_)
.linkStrength(settings.linkStrength._def_)
.on('tick', tick);
drag = sus.createDragBehavior(force,
selectCb, atDragEnd, dragEnabled, clickEnabled);
}
function resize(dim) {
force.size([dim.width, dim.height]);
// Review -- do we need to nudge the layout ?
}
return {
initForce: initForce,
resize: resize
};
}]);
}());