mirror of https://gitee.com/bigwinds/arangodb
119 lines
3.3 KiB
JavaScript
119 lines
3.3 KiB
JavaScript
/*jslint indent: 2, nomen: true, maxlen: 100, sloppy: true, vars: true, white: true, plusplus: true */
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/*global _*/
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/* global eventLibrary */
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////////////////////////////////////////////////////////////////////////////////
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/// @brief Graph functionality
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///
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/// @file
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///
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/// DISCLAIMER
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///
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/// Copyright 2010-2012 triagens GmbH, Cologne, Germany
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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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/// Copyright holder is triAGENS GmbH, Cologne, Germany
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///
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/// @author Michael Hackstein
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/// @author Copyright 2011-2012, triAGENS GmbH, Cologne, Germany
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////////////////////////////////////////////////////////////////////////////////
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// Example onclick = new eventLibrary.Expand(
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// edges, nodes, start,
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// adapter.loadNode, nodeShaper.reshapeNode)
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function EventLibrary() {
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this.Expand = function (edges, nodes, startCallback, loadNode, reshapeNode) {
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if (edges === undefined) {
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throw "Edges have to be defined";
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}
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if (nodes === undefined) {
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throw "Nodes have to be defined";
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}
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if (startCallback === undefined) {
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throw "A callback to the Start-method has to be defined";
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}
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if (loadNode === undefined) {
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throw "A callback to load a node has to be defined";
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}
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if (reshapeNode === undefined) {
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throw "A callback to reshape a node has to be defined";
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}
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var removeNode = function (node) {
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var i;
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for ( i = 0; i < nodes.length; i++ ) {
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if ( nodes[i] === node ) {
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nodes.splice( i, 1 );
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return;
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}
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}
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},
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// Helper function to easily remove all outbound edges for one node
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removeOutboundEdgesFromNode = function ( node ) {
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if (node._outboundCounter > 0) {
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var subNodes = [],
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i;
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for ( i = 0; i < edges.length; i++ ) {
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if ( edges[i].source === node ) {
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subNodes.push(edges[i].target);
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node._outboundCounter--;
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edges[i].target._inboundCounter--;
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edges.splice( i, 1 );
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if (node._outboundCounter === 0) {
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break;
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}
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i--;
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}
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}
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return subNodes;
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}
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},
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collapseNode = function(node) {
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node._expanded = false;
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var subNodes = removeOutboundEdgesFromNode(node);
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_.each(subNodes, function (n) {
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if (n._inboundCounter === 0) {
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collapseNode(n);
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removeNode(n);
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}
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});
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},
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expandNode = function(n) {
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n._expanded = true;
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loadNode(n.id, startCallback);
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};
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// @ before layouter.stop()
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// nodeClicked = function(n)
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return function(n) {
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if (!n._expanded) {
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expandNode(n);
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} else {
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collapseNode(n);
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}
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reshapeNode(n);
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startCallback();
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};
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};
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}
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