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Nicholas O'Leary
312
public/red/nodes.js
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312
public/red/nodes.js
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/**
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* Copyright 2013 IBM Corp.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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**/
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RED.nodes = function() {
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var node_defs = {};
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var nodes = [];
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var configNodes = {};
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var links = [];
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function registerType(nt,def) {
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node_defs[nt] = def;
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// TODO: too tightly coupled into palette UI
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RED.palette.add(nt,def);
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}
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function getType(type) {
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return node_defs[type];
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}
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function addNode(n) {
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if (n._def.category == "config") {
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configNodes[n.id] = n;
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} else {
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n.dirty = true;
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nodes.push(n);
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}
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}
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function addLink(l) {
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links.push(l);
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}
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function addConfig(c) {
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configNodes[c.id] = c;
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}
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function getNode(id) {
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if (id in configNodes) {
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return configNodes[id];
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} else {
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for (var n in nodes) {
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if (nodes[n].id == id) {
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return nodes[n];
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}
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}
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}
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return null;
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}
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function removeNode(id) {
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var removedLinks = [];
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if (id in configNodes) {
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delete configNodes[id];
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} else {
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var node = getNode(id);
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if (node) {
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nodes.splice(nodes.indexOf(node),1);
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removedLinks = links.filter(function(l) { return (l.source === node) || (l.target === node); });
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removedLinks.map(function(l) {links.splice(links.indexOf(l), 1); });
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}
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}
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return removedLinks;
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}
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function removeLink(l) {
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var index = links.indexOf(l);
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if (index != -1) {
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links.splice(index,1);
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}
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}
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function refreshValidation() {
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for (var n in nodes) {
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RED.editor.validateNode(nodes[n]);
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}
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}
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function getAllFlowNodes(node) {
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var visited = {};
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visited[node.id] = true;
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var nns = [node];
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var stack = [node];
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while(stack.length != 0) {
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var n = stack.shift();
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var childLinks = links.filter(function(d) { return (d.source === n) || (d.target === n);});
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for (var i in childLinks) {
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var child = (childLinks[i].source === n)?childLinks[i].target:childLinks[i].source;
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if (!visited[child.id]) {
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visited[child.id] = true;
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nns.push(child);
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stack.push(child);
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}
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}
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}
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return nns;
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}
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/**
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* Converts a node to an exportable JSON Object
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**/
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function convertNode(n) {
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var node = {};
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node.id = n.id;
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node.type = n.type;
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for (var d in n._def.defaults) {
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node[d] = n[d];
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}
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if (n._def.category != "config") {
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node.x = n.x;
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node.y = n.y;
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node.wires = [];
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for(var i=0;i<n.outputs;i++) {
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node.wires.push([]);
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}
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var wires = links.filter(function(d){return d.source === n;});
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for (var i in wires) {
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var w = wires[i];
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node.wires[w.sourcePort].push(w.target.id);
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}
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}
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return node;
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}
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/**
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* Converts the current node selection to an exportable JSON Object
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**/
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function createExportableNodeSet(set) {
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var nns = [];
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var exportedConfigNodes = {};
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for (var n in set) {
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var node = set[n].n;
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var convertedNode = RED.nodes.convertNode(node);
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for (var d in node._def.defaults) {
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if (node._def.defaults[d].type && node[d] in configNodes) {
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var confNode = configNodes[node[d]];
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var exportable = getType(node._def.defaults[d].type).exportable;
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if ((exportable == null || exportable)) {
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if (!(node[d] in exportedConfigNodes)) {
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exportedConfigNodes[node[d]] = true;
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nns.unshift(RED.nodes.convertNode(confNode));
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}
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} else {
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convertedNode[d] = "";
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}
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}
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}
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nns.push(convertedNode);
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}
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return nns;
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}
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//TODO: rename this (createCompleteNodeSet)
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function createCompleteNodeSet() {
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var nns = [];
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for (var i in configNodes) {
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nns.push(convertNode(configNodes[i]));
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}
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for (var i in nodes) {
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var node = nodes[i];
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nns.push(convertNode(node));
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}
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return nns;
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}
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function importNodes(newNodesObj,createNewIds) {
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try {
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var newNodes;
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if (typeof newNodesObj === "string") {
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if (newNodesObj == "") {
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return;
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}
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newNodes = JSON.parse(newNodesObj);
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} else {
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newNodes = newNodesObj;
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}
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if (!$.isArray(newNodes)) {
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newNodes = [newNodes];
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}
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for (var i in newNodes) {
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var n = newNodes[i];
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if (!getType(n.type)) {
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// TODO: get this UI thing out of here! (see below as well)
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RED.notify("<strong>Failed to import nodes</strong>: unrecognised type '"+n.type+"'","error");
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return null;
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}
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}
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var node_map = {};
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var new_nodes = [];
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var new_links = [];
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for (var i in newNodes) {
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var n = newNodes[i];
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var def = getType(n.type);
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if (def && def.category == "config") {
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if (!RED.nodes.node(n.id)) {
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var configNode = {id:n.id,type:n.type,users:[]};
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for (var d in def.defaults) {
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configNode[d] = n[d];
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}
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configNode.label = def.label;
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configNode._def = def;
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RED.nodes.add(configNode);
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}
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} else {
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var node = {x:n.x,y:n.y,type:0,wires:n.wires};
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if (createNewIds) {
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node.id = (1+Math.random()*4294967295).toString(16);
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} else {
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node.id = n.id;
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}
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node.type = n.type;
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node._def = def;
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if (!node._def) {
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node._def = {
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color:"#fee",
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defaults: {},
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label: "unknown: "+n.type,
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labelStyle: "node_label_italic",
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outputs: n.outputs||n.wires.length
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}
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}
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node.outputs = n.outputs||node._def.outputs;
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for (var d in node._def.defaults) {
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node[d] = n[d];
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if (node._def.defaults[d].type) {
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var configNode = RED.nodes.node(n[d]);
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if (configNode) {
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configNode.users.push(node);
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}
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}
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}
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addNode(node);
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RED.editor.validateNode(node);
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node_map[n.id] = node;
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new_nodes.push(node);
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}
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}
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for (var i in new_nodes) {
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var n = new_nodes[i];
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for (var w1 in n.wires) {
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var wires = (n.wires[w1] instanceof Array)?n.wires[w1]:[n.wires[w1]];
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for (var w2 in wires) {
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if (wires[w2] in node_map) {
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var link = {source:n,sourcePort:w1,target:node_map[wires[w2]]};
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addLink(link);
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new_links.push(link);
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}
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}
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}
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delete n.wires;
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}
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return [new_nodes,new_links];
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} catch(error) {
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//TODO: get this UI thing out of here! (see above as well)
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RED.notify("<strong>Error</strong>: "+error,"error");
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return null;
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}
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}
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return {
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registerType: registerType,
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getType: getType,
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convertNode: convertNode,
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add: addNode,
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addLink: addLink,
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remove: removeNode,
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removeLink: removeLink,
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eachNode: function(cb) {
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for (var n in nodes) {
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cb(nodes[n]);
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}
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},
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eachLink: function(cb) {
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for (var l in links) {
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cb(links[l]);
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}
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},
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eachConfig: function(cb) {
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for (var id in configNodes) {
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cb(configNodes[id]);
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}
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},
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node: getNode,
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import: importNodes,
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refreshValidation: refreshValidation,
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getAllFlowNodes: getAllFlowNodes,
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createExportableNodeSet: createExportableNodeSet,
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createCompleteNodeSet: createCompleteNodeSet,
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nodes: nodes, // TODO: exposed for d3 vis
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links: links // TODO: exposed for d3 vis
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};
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}();
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