Simon Hunt | 2052e5d | 2015-04-13 17:40:44 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2015 Open Networking Laboratory |
| 3 | * |
| 4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | * you may not use this file except in compliance with the License. |
| 6 | * You may obtain a copy of the License at |
| 7 | * |
| 8 | * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | * |
| 10 | * Unless required by applicable law or agreed to in writing, software |
| 11 | * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | * See the License for the specific language governing permissions and |
| 14 | * limitations under the License. |
| 15 | */ |
| 16 | |
| 17 | /* |
| 18 | ONOS GUI -- Topology Sprite Module. |
| 19 | Defines behavior for loading sprites. |
| 20 | */ |
| 21 | |
| 22 | (function () { |
| 23 | 'use strict'; |
| 24 | |
| 25 | // injected refs |
| 26 | var $log, $http, fs, sus; |
| 27 | |
| 28 | // internal state |
| 29 | var spriteLayer, |
| 30 | cache = d3.map(); |
| 31 | |
| 32 | // constants |
| 33 | var urlPrefix = 'data/ext/'; |
| 34 | |
| 35 | function getUrl(id) { |
| 36 | return urlPrefix + id + '.json'; |
| 37 | } |
| 38 | |
| 39 | // ========================= |
| 40 | |
| 41 | function clearCache() { |
| 42 | cache = d3.map(); |
| 43 | } |
| 44 | |
| 45 | |
| 46 | function loadSpriteData(id, cb) { |
| 47 | var url = getUrl(id), |
| 48 | promise = cache.get(id); |
| 49 | |
| 50 | if (!promise) { |
| 51 | // need to fetch data and cache it |
| 52 | promise = $http.get(url); |
| 53 | |
| 54 | promise.meta = { |
| 55 | id: id, |
| 56 | url: url, |
| 57 | wasCached: false |
| 58 | }; |
| 59 | |
| 60 | promise.then(function (response) { |
| 61 | // success |
| 62 | promise.spriteData = response.data; |
| 63 | cb(promise.spriteData); |
| 64 | }, function (response) { |
| 65 | // error |
| 66 | $log.warn('Failed to retrieve sprite data: ' + url, |
| 67 | response.status, response.data); |
| 68 | }); |
| 69 | |
| 70 | } else { |
| 71 | promise.meta.wasCached = true; |
| 72 | cb(promise.spriteData); |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | function doSprite(def, item) { |
| 77 | var g; |
| 78 | |
| 79 | function xfm(x, y, s) { |
| 80 | return sus.translate([x,y]) + sus.scale(s, s); |
| 81 | } |
| 82 | |
| 83 | g = spriteLayer.append('g') |
| 84 | .classed(def['class'], true) |
| 85 | .attr('transform', xfm(item.x, item.y, def.scale)); |
| 86 | |
| 87 | if (item.label) { |
| 88 | g.append('text') |
| 89 | .text(item.label) |
| 90 | .attr({ |
| 91 | x: def.width / 2, |
| 92 | y: def.height * def.textyoff |
| 93 | }); |
| 94 | } |
| 95 | |
| 96 | g.append('use').attr({ |
| 97 | width: def.width, |
| 98 | height: def.height, |
| 99 | 'xlink:href': '#' + def.use |
| 100 | }); |
| 101 | } |
| 102 | |
| 103 | function loadSprites(layer) { |
| 104 | spriteLayer = layer; |
| 105 | |
| 106 | loadSpriteData('sprites', function (data) { |
| 107 | var defs = {}; |
| 108 | |
| 109 | $log.debug("Loading sprites...", data.file_desc); |
| 110 | |
| 111 | data.defn.forEach(function (d) { |
| 112 | defs[d.id] = d; |
| 113 | }); |
| 114 | |
| 115 | data.load.forEach(function (item) { |
| 116 | doSprite(defs[item.id], item); |
| 117 | }); |
| 118 | }); |
| 119 | |
| 120 | } |
| 121 | |
| 122 | |
| 123 | // === ----------------------------------------------------- |
| 124 | // === MODULE DEFINITION === |
| 125 | |
| 126 | angular.module('ovTopo') |
| 127 | .factory('TopoSpriteService', |
| 128 | ['$log', '$http', 'FnService', 'SvgUtilService', |
| 129 | |
| 130 | function (_$log_, _$http_, _fs_, _sus_) { |
| 131 | $log = _$log_; |
| 132 | $http = _$http_; |
| 133 | fs = _fs_; |
| 134 | sus = _sus_; |
| 135 | |
| 136 | return { |
| 137 | clearCache: clearCache, |
| 138 | loadSprites: loadSprites |
| 139 | }; |
| 140 | }]); |
| 141 | |
| 142 | }()); |