js画图开发库--mxgraph--[permissions-权限.html]
<!Doctype html> <html xmlns=http://www.w3.org/1999/xhtml> <head> <meta http-equiv=Content-Type content="text/html;charset=utf-8"> <title>权限</title> <!-- 如果本文件的包与src不是在同一个目录,就要将basepath设置到src目录下 --> <script type="text/javascript"> mxBasePath = '../src'; </script> <!-- 引入支持库文件 --> <script type="text/javascript" src="../src/js/mxClient.js"></script> <!-- 示例代码 --> <script type="text/javascript"> // 程序在此方法中启动 function main() { // 检查浏览器支持 if (!mxClient.isBrowserSupported()) { mxUtils.error('Browser is not supported!', 200, false); } else { // 去锯齿效果 in SVG mxRectangleShape.prototype.crisp = true; // 定义创建新的连接,在连接处理程序中的图标。 这将自动禁用高亮显示的源点。 mxConnectionHandler.prototype.connectImage = new mxImage('images/connector.gif', 16, 16); // 在图形中创建容器 var container = document.createElement('div'); container.style.position = 'absolute'; container.style.overflow = 'hidden'; container.style.left = '00px'; container.style.top = '40px'; container.style.right = '0px'; container.style.bottom = '0px'; container.style.background = 'url("editors/images/grid.gif")'; document.body.appendChild(container); // IE浏览器支持 if (mxClient.IS_QUIRKS) { document.body.style.overflow = 'hidden'; new mxDivResizer(container); } // 在天气中创建图形 var graph = new mxGraph(container); // 启用提示工具 graph.setMultigraph(false); graph.setAllowLoops(true); // 使用默认下拉菜单和权限管理 var rubberband = new mxRubberband(graph); var keyHandler = new mxKeyHandler(graph); // 启用删除按钮 keyHandler.bindKey(46, function(evt) { if (graph.isEnabled()) { graph.removeCells(); } }); // 私有变量之间共享变量 var currentPermission = null; var apply = function(permission) { graph.clearSelection(); permission.apply(graph); graph.setEnabled(true); graph.setTooltips(true); // 在小范围内显示图标 - 如果显示大图会非常慢 graph.refresh(); currentPermission = permission; }; apply(new Permission()); // 所有权限 var button = mxUtils.button('所有权限Allow All', function(evt) { apply(new Permission()); }); document.body.appendChild(button); // 仅连接权限 var button = mxUtils.button('仅连接权限Connect Only', function(evt) { apply(new Permission(false, true, false, false, true)); }); document.body.appendChild(button); // 仅连接线可变 var button = mxUtils.button('仅连接线可变 Edges Only', function(evt) { apply(new Permission(false, false, true, false, false)); }); document.body.appendChild(button); // 仅元素可变 var button = mxUtils.button('仅元素可变Vertices Only', function(evt) { apply(new Permission(false, false, false, true, false)); }); document.body.appendChild(button); // 仅可被选择 var button = mxUtils.button('仅可被选择Select Only', function(evt) { apply(new Permission(false, false, false, false, false)); }); document.body.appendChild(button); // 锁定 var button = mxUtils.button('锁定Locked', function(evt) { apply(new Permission(true, false)); }); document.body.appendChild(button); // 已禁用 var button = mxUtils.button('已禁用Disabled', function(evt) { graph.clearSelection(); graph.setEnabled(false); graph.setTooltips(false); }); document.body.appendChild(button); // 继承回调函数使用许可对象。这可以通过分配各开关(如setMovable),这种方法是更灵活的, // 不覆盖任何现有的行为或设置,并允许中要使用的功能的动态条件。查看更多的功能扩展(如isSelectable)的规范。 var oldDisconnectable = graph.isCellDisconnectable; graph.isCellDisconnectable = function(cell, terminal, source) { return oldDisconnectable.apply(this, arguments) && currentPermission.editEdges; }; var oldTerminalPointMovable = graph.isTerminalPointMovable; graph.isTerminalPointMovable = function(cell) { return oldTerminalPointMovable.apply(this, arguments) && currentPermission.editEdges; }; var oldBendable = graph.isCellBendable; graph.isCellBendable = function(cell) { return oldBendable.apply(this, arguments) && currentPermission.editEdges; }; var oldLabelMovable = graph.isLabelMovable; graph.isLabelMovable = function(cell) { return oldLabelMovable.apply(this, arguments) && currentPermission.editEdges; }; var oldMovable = graph.isCellMovable; graph.isCellMovable = function(cell) { return oldMovable.apply(this, arguments) && currentPermission.editVertices; }; var oldResizable = graph.isCellResizable; graph.isCellResizable = function(cell) { return oldResizable.apply(this, arguments) && currentPermission.editVertices; }; var oldEditable = graph.isCellEditable; graph.isCellEditable = function(cell) { return oldEditable.apply(this, arguments) && (this.getModel().isVertex(cell) && currentPermission.editVertices) || (this.getModel().isEdge(cell) && currentPermission.editEdges); }; var oldDeletable = graph.isCellDeletable; graph.isCellDeletable = function(cell) { return oldDeletable.apply(this, arguments) && (this.getModel().isVertex(cell) && currentPermission.editVertices) || (this.getModel().isEdge(cell) && currentPermission.editEdges); }; var oldCloneable = graph.isCellCloneable; graph.isCellCloneable = function(cell) { return oldCloneable.apply(this, arguments) && currentPermission.cloneCells; }; // 创建默认窗体 var parent = graph.getDefaultParent(); // 开启更新事务 graph.getModel().beginUpdate(); try { var v1 = graph.insertVertex(parent, null, 'Hello,', 20, 20, 80, 30); var v2 = graph.insertVertex(parent, null, 'Hello,', 200, 20, 80, 30); var v3 = graph.insertVertex(parent, null, 'World!', 200, 150, 80, 30); var e1 = graph.insertEdge(parent, null, 'Connection', v1, v3); } finally { // 结束更新事务 graph.getModel().endUpdate(); } } }; // 权限设置 function Permission(locked, createEdges, editEdges, editVertices, cloneCells) { this.locked = (locked != null) ? locked : false; this.createEdges = (createEdges != null) ? createEdges : true; this.editEdges = (editEdges != null) ? editEdges : true;; this.editVertices = (editVertices != null) ? editVertices : true;; this.cloneCells = (cloneCells != null) ? cloneCells : true;; }; Permission.prototype.apply = function(graph) { graph.setConnectable(this.createEdges); graph.setCellsLocked(this.locked); }; </script> </head> <!-- 页面载入时启动程序 --> <body onload="main();"> </body> </html>