JQuery_JavaScript___plug__jsPlumb.js UI连线插件使用


GitHub地址:https://github.com/xiaohulu/util_xiaohulu/tree/master/web/plug_in/jsPlumb_

所需三个js文件:




效果图


JQuery_JavaScript___plug__jsPlumb.js UI连线插件使用_第1张图片


代码:


<!DOCTYPE html>
<html>

<head>
    <script src="jsPlumb_files/jquery-1.9.0.js"></script>
    <script src="jsPlumb_files/jquery-ui-1.9.2-min.js"></script>
    <script src="jsPlumb_files/jquery.jsPlumb-1.4.0-all.js"></script>
    <title>jsPlumb_demo</title>
    <meta charset="UTF-8">

    <style type="text/css">
        /**当拖动一个连接点时,可连接的连接点会自动使用该css**/
        .dragActive {
            border: 2px dotted orange;
        }

        /**当拖动一个连接点到可连接的点时,该点会自动使用该css**/
        .dropHover {
            border: 1px dotted red;
        }

        .item {
            border: 1px solid black;
            background-color: #ddddff;
            width: 100px;
            height: 100px;
            position: absolute;
        }

        #state1 {
            left: 100px;
            top: 100px;
        }

        #state2 {
            left: 350px;
            top: 150px;
        }

        #state3 {
            left: 100px;
            top: 350px;
        }

        #state4 {
            left: 300px;
            top: 350px;
        }
    </style>

    <script>

        //初始化
        jsPlumb.ready(function () {

            //首先,我们给jsPlumb设一些默认值,然后声明一个exampleDropOptions变量。
            jsPlumb.importDefaults({
                DragOptions: { cursor: 'pointer'},	//拖动时鼠标停留在该元素上显示指针,通过css控制
                PaintStyle: { strokeStyle: '#666' },//元素的默认颜色
                EndpointStyle: { width: 20, height: 16, strokeStyle: '#567567' },//连接点的默认颜色
                Endpoint: [ "Dot", { radius: 5 } ],//连接点的默认形状
                Connector: [ "Bezier", { curviness: 150 } ],
                Anchors: [ "TopCenter", "BottomCenter" ],//连接点的默认位置
                ConnectionOverlays: [//连接覆盖图
                    ["Arrow", {
                        location: 1,
                        id: "arrow",
                        length: 14,
                        foldback: 1
                    }],
                    ["Label", {
                        location: 0.5,
                        id: "label",
                        cssClass: "aLabel"
                    }]
                ]
            });
            var exampleDropOptions = {
                hoverClass: "dropHover",//释放时指定鼠标停留在该元素上使用的css class
                activeClass: "dragActive"//可拖动到的元素使用的css class
            };

            // 绑定到连接/ connectionDetached事件,和更新的列表在屏幕上的连接。
            jsPlumb.bind("connection", function (info, originalEvent) {
                updateConnections(info.connection);
            });
            jsPlumb.bind("connectionDetached", function (info, originalEvent) {
                updateConnections(info.connection, true);
            });

            function updateConnections(info) {
                alert("连接线ID:" + info.id + "\n连接线sourceID:" + info.sourceId + "\n连接线targetID:" + info.targetId);
             alert(info.endpoints[0].getUuid().substr(info.endpoints[0].getUuid().indexOf('-') + 1));
            }


            //添加jsPlumb连接点
            var color1 = "#316b31";
            var exampleEndpoint1 = {
                endpoint: ["Dot", { radius: 5 }],//设置连接点的形状为圆形
                paintStyle: { fillStyle: color1 },//设置连接点的颜色
                isSource: true,	//是否可以拖动(作为连线起点)
                scope: "green dot",//连接点的标识符,只有标识符相同的连接点才能连接
                connectorStyle: { strokeStyle: color1, lineWidth: 6 },//连线颜色、粗细
                connector: ["Bezier", { curviness: 10 } ],//设置连线为贝塞尔曲线
                maxConnections: 1,//设置连接点最多可以连接几条线
                isTarget: true,	//是否可以放置(作为连线终点)
                dropOptions: exampleDropOptions//设置放置相关的css
            };

            var color2 = "rgba(229,219,61,0.5)";
            var exampleEndpoint2 = {
                endpoint: "Rectangle",	//设置连接点的形状为矩形
                paintStyle: {//设置连接点的大小、颜色、透明度
                    width: 25,
                    height: 21,
                    fillStyle: "red",
                    opacity: 0.5
                },
                anchor: "BottomLeft",	//设置连接点的位置,左下角
                isSource: true, //是否可以拖动(作为连线起点)
                scope: 'yellow dot',	//连接点的标识符,只有标识符相同的连接点才能连接
                connectorStyle: { strokeStyle: color2, lineWidth: 4},//连线颜色、粗细
                //connector: "Straight",	//设置连线为直线
                connector: "Flowchart",//设置为流程图线
                isTarget: true,//是否可以放置(作为连线终点)
                maxConnections: 3,//设置连接点最多可以连接几条线  [-1为无限制]
                dropOptions: exampleDropOptions,//设置放置相关的css
                beforeDetach: function (conn) {	//绑定一个函数,在连线前弹出确认框
                    return confirm("断开连接?");
                },
                onMaxConnections: function (info) {//绑定一个函数,当到达最大连接个数时弹出提示框
                    alert("Cannot drop connection " + info.connection.id + " : maxConnections has been reached on Endpoint " + info.endpoint.id);
                }
            };

            var exampleEndpoint3 = {
                endpoint: "Rectangle",	//设置连接点的形状为矩形
                paintStyle: {//设置连接点的大小、颜色、透明度
                    width: 25,
                    height: 21,
                    fillStyle: "blue",
                    opacity: 0.5
                },
                anchor: "BottomLeft",	//设置连接点的位置,左下角
                isSource: true, //是否可以拖动(作为连线起点)
                scope: 'blue dot',	//连接点的标识符,只有标识符相同的连接点才能连接
                connectorStyle: { strokeStyle: color2, lineWidth: 4},//连线颜色、粗细
                //connector: "Straight",	//设置连线为直线
                connector: "Flowchart",//设置为流程图线
                isTarget: true,//是否可以放置(作为连线终点)
                maxConnections: -1,//设置连接点最多可以连接几条线  [-1为无限制]
                dropOptions: exampleDropOptions,//设置放置相关的css
                beforeDetach: function (conn) {	//绑定一个函数,在连线前弹出确认框
                    return confirm("断开连接?");
                },
                onMaxConnections: function (info) {//绑定一个函数,当到达最大连接个数时弹出提示框
                    alert("Cannot drop connection " + info.connection.id + " : maxConnections has been reached on Endpoint " + info.endpoint.id);
                }
            };


            //将连接点绑定到html元素上
            var anchors = [
                        [1, 0.2, 1, 0],
                        [0.8, 1, 0, 1],
                        [0, 0.8, -1, 0],
                        [0.2, 0, 0, -1]
                    ],
                    maxConnectionsCallback = function (info) {
                        alert("Cannot drop connection " + info.connection.id + " : maxConnections has been reached on Endpoint " + info.endpoint.id);
                    };


            var e1 = jsPlumb.addEndpoint("state2", { anchor: "LeftMiddle" }, exampleEndpoint1);//将exampleEndpoint1类型的点绑定到id为state2的元素上
            e1.bind("maxConnections", maxConnectionsCallback);//也可以在加到元素上之后绑定函数

            jsPlumb.addEndpoint("state1", exampleEndpoint1);//将exampleEndpoint1类型的点绑定到id为state1的元素上
            jsPlumb.addEndpoint("state3", exampleEndpoint2);//将exampleEndpoint2类型的点绑定到id为state3的元素上
            jsPlumb.addEndpoint("state1", {anchor: anchors}, exampleEndpoint2);//将exampleEndpoint2类型的点绑定到id为state1的元素上,指定活动连接点

            jsPlumb.addEndpoint("state3", {anchor: anchors}, exampleEndpoint3);//将exampleEndpoint2类型的点绑定到id为state1的元素上,指定活动连接点
            jsPlumb.addEndpoint("state4", {anchor: anchors}, exampleEndpoint3);//将exampleEndpoint2类型的点绑定到id为state1的元素上,指定活动连接点

            //设置连接线
            jsPlumb.connect({
                source: "state3",
                target: "state2"
            });
        });

    </script>
</head>

<body>
//html部分仅声明三个div,注意,jsPlumb通过id来识别html元素,因此如果要使用jsPlumb连线必须声明id。
<div id="state1" class="item">state1</div>
<div id="state2" class="item">state2</div>
<div id="state3" class="item">state3</div>

<div id="state4" class="item">state4</div>

</body>
</html>


后续研究....待更新...


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