mirror of https://gitee.com/bigwinds/arangodb
155 lines
4.0 KiB
JavaScript
155 lines
4.0 KiB
JavaScript
/*jslint indent: 2, nomen: true, maxlen: 100, white: true plusplus: true */
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/*global _, $*/
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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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/*
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* flags example format:
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* {
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* label: "key" \\ function(node)
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* }
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*
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*
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*/
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function EdgeShaper(parent, flags, idfunc) {
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"use strict";
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var self = this,
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idFunction = function(d) {
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return d.source._id + "-" + d.target._id;
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},
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additionalShaping = function(edge) {
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return;
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},
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decorateShape = function (deco) {
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var tmp = additionalShaping;
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additionalShaping = function (edge) {
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tmp(edge);
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deco(edge);
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};
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},
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redrawEdges = function () {
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var edge;
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edge = self.parent
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.selectAll(".link");
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$(".link").empty();
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additionalShaping(edge);
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},
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parseLabelFlag;
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self.parent = parent;
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if (flags !== undefined) {
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parseLabelFlag = function (label) {
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var labelDeco = additionalShaping;
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if (_.isFunction(label)) {
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additionalShaping = function (edge) {
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edge.append("text") // Append a label for the node
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.attr("text-anchor", "middle") // Define text-anchor
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.text(function(d) {
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return label(d);
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});
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labelDeco(edge);
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};
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} else {
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additionalShaping = function (edge) {
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edge.append("text") // Append a label for the node
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.attr("text-anchor", "middle") // Define text-anchor
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.text(function(d) {
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return d[label] || ""; // Which value should be used as label
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});
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labelDeco(edge);
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};
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}
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};
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parseLabelFlag(flags.label);
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}
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if (_.isFunction(idfunc)) {
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idFunction = idfunc;
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}
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self.drawEdges = function (edges) {
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var data, link;
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if (edges !== undefined) {
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data = self.parent
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.selectAll("line")
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.data(edges, idFunction);
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link = data
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.enter()
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.append("line")
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.attr("class", "link") // link is CSS class that might be edited
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.attr("id", idFunction);
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additionalShaping(link);
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data.exit().remove();
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return link;
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}
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link = self.parent
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.selectAll("line")
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.attr("class", "link") // node is CSS class that might be edited
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.attr("id",idFunction);
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additionalShaping(link);
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};
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self.updateEdges = function () {
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self.parent.selectAll("line.link")
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// Set source x coordinate for edge.
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.attr("x1", function(d) {
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return d.source.x;
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})
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// Set source y coordinate for edge.
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.attr("y1", function(d) {
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return d.source.y;
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})
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// Set target x coordinate for edge.
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.attr("x2", function(d) {
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return d.target.x;
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})
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// Set target y coordinate for edge.
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.attr("y2", function(d) {
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return d.target.y;
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});
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};
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self.on = function (identifier, callback) {
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decorateShape(function (edge) {
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edge.on(identifier, callback);
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});
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self.drawEdges();
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};
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}
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// Marker:
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// .attr("marker-end", "url(#arrow)");
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