Select 控件

一个下拉列表框。

gantt.config.lightbox.sections = [
    {name:"description", height:38, map_to:"text", type:"textarea", focus:true},
    {name:"priority", height:22, map_to:"priority", type:"select", options: [         {key:1, label: "High"},                                                       {key:2, label: "Normal"},                                                     {key:3, label: "Low"}                                                      ]},                                                                          {name:"time", height:72, type:"duration", map_to:"auto"}
];
 
gantt.locale.labels.section_priority = "Priority";

Related sample:  Select control

初始化

要在 lightbox 中包含 select 控件，操作步骤如下：

1）在 lightbox 配置中添加一个 section：

var opts = [
    {key:1, label: "High"},                                            
    {key:2, label: "Normal"},                                         
    {key:3, label: "Low"}                                            
];
 
gantt.config.lightbox.sections = [
    {name:"description", height:38, map_to:"text", type:"textarea",focus:true},
    {name:"priority", height:22, map_to:"priority",type:"select",options:opts},                                                                           {name:"time", height:72, type:"duration", map_to:"auto"}
];

2）为该 section 定义一个标签：

gantt.locale.labels.section_priority = "Priority";

Related sample:  Select control

属性

以下是 select 控件常用的一些关键属性（完整列表请参见 这里）：

• name - (string) section 的名称
• height - (number) section 的高度
• map_to - (string) 映射到 section 的数据属性名
• type - (string) section 控件 的类型
• focus - (boolean) 为 true 时，lightbox 打开时该 section 获得焦点
• options - (array) 定义 select 控件选项的对象数组（用于 select、checkbox 和 radio 控件）。每个对象代表一个选项，包含：
  • key - (string) 选项 ID，与任务数据属性匹配以分配选项
  • label - (string) 选项标签
• default_value - (any) 控件的默认值，当输入值为 undefined 时应用
• onchange - (function) 控件的 'onChange' 事件处理函数

为控件填充数据

要为 select 控件设置选项值，请使用 options 参数：

gantt.config.lightbox.sections = [
    { name:"priority",height:22, map_to:"priority",type:"select",
      options: [ 
        {key:1, label: "High"},                                               
        {key:2, label: "Normal"},                                             
        {key:3, label: "Low"}                                                
    ]}                                                                    
];

options 数组中的每一项必须包含以下两个属性：

• key - 选项 ID
• label - 选项标签

通过服务器数据填充控件

如需通过服务器数据为控件填充值，将 options 参数赋值为 serverList 方法返回的值：

gantt.config.lightbox.sections = [
    {name:"description", ...},
    { name:"priority",map_to:"priority",type:"select",
        options:gantt.serverList("priority")},     {name:"category", map_to:"category", type:"select", 
        options:gantt.serverList("category")},     {name:"time", ...}
];
gantt.init("gantt_here");
gantt.load("/data");

/data 接口返回的数据格式如下：

{
  "tasks":[
    {"id":1,"text":"Project #2","start_date":"01-04-2020","duration":18,"parent":0},
    {"id":2,"text":"Task #1","start_date":"02-04-2020","duration":8,"parent":1},
    {"id":3,"text":"Task #2","start_date":"11-04-2020","duration":8,"parent":1}
  ],
  "links":[
    {"id":1,"source":1,"target":2,"type":"1"},
    {"id":2,"source":2,"target":3,"type":"0"}
  ],
  "collections": {     "priority":[
        {"value":"1","label":"Low"},
        {"value":"2","label":"Medium"},
        {"value":"3","label":"High"}
    ],
    "category":[
        {"value":"1","label":"Simple"},
        {"value":"2","label":"Complex"},
        {"value":"3","label":"Unknown"}
    ]
  }
}

通过 dhtmlxConnector 加载选项

以下是初始化 dhtmlxConnector 的示例：

//data.php
<?php
    include('connector-php/codebase/gantt_connector.php');
 
    $res = new PDO("mysql:host=localhost;dbname=gantt", "root", "");
 
    $list = new OptionsConnector($res);
    $list->render_table("priorities","id","id(value),name(label)");
 
    $gantt = new JSONGanttConnector($res);
    $gantt->set_options("priority", $list);
    $gantt->render_links("gantt_links","id","source_task(source),
                    target_task(target),type");    
    $gantt->render_table("gantt_tasks","id","start_date,duration,text,progress,
                    sortorder,parent");
?>

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