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WPF container to turn all child controls to read-only

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问题 I would like to have a WPF container (panel, user control, etc.) that exposes a property to turn all children to read-only if set. This should pretty much be like setting a parent control to IsEnabled=false, which also disables all children. What children and which of their properties should be considered is fixed (e.g. TextBox.ReadOnly, DataGrid.ReadOnly, ...). I have tried to create such a control, which essentially iterates all children of the visual tree (recursively) and deals with the

Is it possible to adopt a process?

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Process A fork() s process B. Process A dies and therefore init adopts B. A watchdog creates process C. Is it somehow possible for C to adopt B from init ? Update : Or would it even be possible to have C adopt B directly (when A dies), if C were created prior to A's dead, without init becoming an intermediate parent of B? Update-1: Also I would appreciate any comments on why having the possiblity to adopt a process the way I described would be a bad thing or difficult to impossible to implement. Update-2 - The use case (parent and children refer to process(es)): I have an app using a parent to

How can I reduce the amount of children I use in my jQuery functions?

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问题 I feel like I have to use way too many .children() in some of my jQuery functions. Here's my HTML: <div class="goal-small-container"> <div class="goal-content"> <div class="goal-row"> <span class="goal-actions"> And here's my jQuery: $('.goal-small-container').hover(function() { $(this).children('.goal-content').children('.goal-row').children('.goal-actions').css({visibility: "visible"}); }, function () { $(this).children('.goal-content').children('.goal-row').children('.goal-actions').css(

easyui tree 级联从三种状态变为两种状态

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$(‘#tree‘).tree({ url: ‘/tree‘ 　　,lines:false ,checkbox:true ,cascadeCheck: false ,onCheck: function (node, checked) { blChild(node,checked); 　　　blParent(node,checked); 　　} }); function blChild(node, checked){ var children = node.children; if(children.length>0){ for(var i=0;i<children.length;i++){ var childNode = children[i]; //childNode = $(‘#tree‘).tree(‘find‘, childNode.id);//当树没加载好，修改报iconCls错时加上这行即可 if(checked){ $(‘#tree‘).tree(‘update‘, { target:childNode.target, checked:true }); }else{ $(‘#tree‘).tree(‘update‘, { target:childNode.target, checked:false }); } blChild(childNode,checked); }

C#实现无限层级树

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namespace Test { class Program { static void Main( string [] args) { // 实现层级树的方法 var list = new List<Menu> () { new Menu () { Id = 1 , Name = " 主菜单1 " , PId = 0 }, new Menu () { Id = 2 , Name = " 下级菜单11 " , PId = 1 }, new Menu () { Id = 3 , Name = " 主菜单2 " , PId = 0 }, new Menu () { Id = 4 , Name = " 下级菜单21 " , PId = 3 }, new Menu () { Id = 5 , Name = " 下下级菜单212 " , PId = 4 } }; var dictMenus = new Dictionary< int , Menu> (list.Count); foreach ( var menu in list) { dictMenus.Add(menu.Id, menu); } foreach ( var value in dictMenus.Values) { if (dictMenus.ContainsKey(value.PId)) { if (dictMenus

How to select a node's first child name? XPath

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I have an XML from which I have to select the name of the child of one of the nodes. I'm kind of a beginner in this, so I didn't find the Xpath expression to do it. I know the level of the node Example Name from /Employee/Department/ but Department has children nodes of unknown names. I have to select the first child of Department node. How can I do this? You wrote: I have to select the first child of Department node You could use: /Employee/Department/*[1] Then, you also wrote: I have an XML from which I have to select the name of the child of one of the nodes So, you could use: name(

WPF container to turn all child controls to read-only

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I would like to have a WPF container (panel, user control, etc.) that exposes a property to turn all children to read-only if set. This should pretty much be like setting a parent control to IsEnabled=false, which also disables all children. What children and which of their properties should be considered is fixed (e.g. TextBox.ReadOnly, DataGrid.ReadOnly, ...). I have tried to create such a control, which essentially iterates all children of the visual tree (recursively) and deals with the controls accordingly. This works fine, except for the case where further changes would affect the visual

Implementing parent class methods with several children class in Java

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I have a class (let's call it A ) that is extended by several children class ( B , C , D , etc.). In each child class, there are specific methods that I'd like to be accessible from an instantiation of the parent class A . I tried to declare A as an abstract class, and to declare each child class methods inside as abstract. Then I implemented these methods in their own class but it seems that each child class must implement every method of the parent class. However, I can't do this. Would you have an idea for this issue? In each children class, there are specific methods that I'd like to be

jquery 根据后台传递过来的三维数组动态生成三级菜单

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根据后台传递过来的三维数组动态生成三级菜单 1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <meta name="viewport" content="width=device-width, initial-scale=1.0"> 6 <meta http-equiv="X-UA-Compatible" content="ie=edge"> 7 <title>动态树型导航</title> 8 <script src="jquery.min.js"></script> 9 <link rel="stylesheet" href="css/style.css"> 10 <link rel="stylesheet" href="css/nav.css"> 11 </head> 12 <body> 13 <div class="list"> 14 <ul class="one"> 15 <!-- <li> 16 <span class="anim"><img src="images/LOGO.png" alt="" width="20px"></span> 17 <a href="javrscript:void();" class="active">中国文联</a> 18 <ul class

python 实现服务树结构化

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1. 所有服务树数据 tree_list = [{'id': 1, 'pid': 0, 'name': '1211', 'path': '1211', 'leaf': 0, 'type': 0}, {'id': 2, 'pid': 1, 'name': 'a1', 'path': '1211.a1', 'leaf': 0, 'type': 0}, {'id': 3, 'pid': 1, 'name': 'a2', 'path': '1211.a2', 'leaf': 1, 'type': 0}, {'id': 16, 'pid': 0, 'name': 'ddssa', 'path': 'ddssa', 'leaf': 0, 'type': 0}, {'id': 17, 'pid': 16, 'name': '11', 'path': 'ddssa.11', 'leaf': 0, 'type': 0}, {'id': 18, 'pid': 17, 'name': '121ss1', 'path': 'ddssa.11.121ss1', 'leaf': 1, 'type': 0}, {'id': 19, 'pid': 17, 'name': '13', 'path': 'ddssa.11.13', 'leaf': 1, 'type': 0}, {'id': 22, 'pid': 17