dojo甘特图插件扩展ganttcha…

最近几周，公司为了管理项目，要做甘特图，甘特图的插件，要不是很烂，要不是不完善，要不就是收费的，昭来找去，也就dojo的甘特图比较好，但是还是文档奇少，官方文档，给了个例子，也不做说明，他以为我就能看懂了，我去年买了表啊。

无图无真相，先上图，

首先吐槽下，初始化甘特图的时候

ganttChart = new GanttChart({

readOnly: false, // optional: determine if gantt chart iseditable

dataFilePath:"gantt.json", // optional:json data file path for load and save,default is"gantt_default.json"

//saveProgramPath:"",

height: 400, //optional: chart height in pixel,default is 400px

width: document.body.offsetWidth-50, // optional: chart width inpixel,default is 600px

withResource: true //optional: display the resource chart or not

},"gantt"); //"gantt"is the node container id of gantt chart widget

ganttChart.init();

dataFilePath的使用，这里只是写了json的文件名，一句注释，连json数据的格式都没说，不过如果拿到demo后，可以通过函数getJSONData然后转为字符串alert出来，但是把得到字符串放到json文件保存后，还是无法显示json数据，于是继续调试，原来是

loadJSONData:function(filename){

var _this = this;

_this.dataFilePath = filename ||_this.dataFilePath;

request.get(_this.dataFilePath,{

sync: true

}).then(function(response){

_this.loadJSONString( response);//此处原来是respons.text，但是get默认返回的就是text格式的字符串，所以去掉后，即可通过 ganttChart.loadJSONData("gantt.json");来加载数据

_this.buildUIContent();

console.log("Successfully! Loadeddata from: " + _this.dataFilePath);

},function(){

console.log("Failed! Load error: " +_this.dataFilePath);

});

}

然后，在原来功能的基础上，公司测试部的老外说，需要加一个审批的功能，即在甘特图中加入的任务，新增的未审批任务需要以红色显示，审批后，才能显示绿色，于是乎，硬着头皮去修改，感谢dojo是开源的，有未压缩的代码。

首先在ganttTaskItem.js中，扩展一个属性： this.isApproval = configuration.isApproval ||"";

然后在tabmenu.js中的buildcontent方法下，加入一句

var taskSucAdd = this.createTab(11,"Add Successor Task","t",true,this);

taskSucAdd.addItem(1,"Id","id",true);

taskSucAdd.addItem(2,"Name","name");

taskSucAdd.addItem(3,"Start Time","startTime");

taskSucAdd.addItem(4,"Duration (hours)","duration");

taskSucAdd.addItem(5,"Percent Complete (%)","percentage");

taskSucAdd.addItem(6,"Task Assignee","taskOwner");

taskSucAdd.addItem(7,"Is Approval","isApproval");

taskSucAdd.addAction("addSuccessorTaskAction");

根据createTab方法，

createTab: function(id,desc,type,showOInfo,menu,withDefaultValue){

var tab = new contextMenuTab(id,withDefaultValue,this.ganttChart);

this.arrTabs.push(tab);

return tab;

}

得知taskSucAdd是一个contextMenuTab对象，所以需要找到它的addItem方法，并且我们需要的是一个选择框，所以找到dojit的 Select控件，new一个出来

addItem: function(id,name,key,required){

var inputControl;

if(key == "startTime" || key == "startDate"){

inputControl = new DateTextBox({type:"text",constraints:{datePattern:"yyyy.M.d",strict:true}});

}else if(key == "percentage"){

inputControl = new NumberSpinner({ constraints:{ max:100,min:0 }});

}else if(key == "duration"){

inputControl = new NumberSpinner({ constraints:{ min:0}});

}else if(key =="isApproval"){

inputControl = new Select({name:"isApproval",options: [

{ label: "Yes",value: "yes"},

{ label: "No",value: "no",selected:true }]});

}else {

inputControl = new TextBox();

}

this.arrItems.push({

id: id,

name: name,

control: inputControl,

tab: this,

key: key,

required: required

});

在addItem后要执行，taskSucAdd.addAction("addSuccessorTaskAction");，所以还要找到addAction方法，此处没有修改，次方法只是把需要执行的方法名的到，即addSuccessorTaskAction，然后找到addSuccessorTaskAction，

addSuccessorTaskAction: function(){

if(!this.preValueValidation(this.arrItems)){

return;

}

var pr = this.object.project,

id = this.arrItems[0].control.textBox.value,

name = this.arrItems[1].control.textBox.value,

startTime =this.decodeDate(this.arrItems[2].control.textBox.value),

duration = this.arrItems[3].control.textBox.value,

pc = this.arrItems[4].control.textBox.value,

owner = this.arrItems[5].control.textBox.value,

isApproval =this.arrItems[6].control.get('value');

if(lang.trim(id).length <= 0){

return;

}

var parentTaskId = !this.object.parentTask ? "" :this.object.parentTask.taskItem.id;

var predTaskId = this.object.taskItem.id;

if(pr.insertTask(id,startTime,duration,pc,predTaskId,owner,parentTaskId,isApproval)){

this.hide();

}else{

alert("Please adjust your Customization");

return;

}

this.tabMenu.ganttChart.resource &&this.tabMenu.ganttChart.resource.reConstruct();

可以看到，如果要执行成功，还要修改 insertTask方法，在ganttProjectControl.js中找到insertTask方法，

insertTask: function(id,percentage,prevIoUsTaskId,taskOwner,isApproval){

var task = null;

var _task = null;

if(this.project.getTaskById(id)){

return false;

}

if((!duration) || (duration <this.ganttChart.minWorkLength)){

duration = this.ganttChart.minWorkLength;

}

if((!name) || (name == "")){

name = id;

}

if((!percentage) || (percentage == "")){

percentage = 0;

}else{

percentage = parseInt(percentage);

if(percentage < 0 || percentage > 100){

return false;

}

var sortrequired = false;

if((parentTaskId) && (parentTaskId != "")){

var parentTask = this.project.getTaskById(parentTaskId);

if(!parentTask){

return false;

}

startTime = startTime || parentTask.startTime;

if(startTime < parentTask.startTime){

return false;

}

task = new GanttTaskItem({

id: id,

startTime: startTime,

duration: duration,

percentage: percentage,

prevIoUsTaskId: prevIoUsTaskId,

taskOwner: taskOwner,

isApproval: isApproval

});

if(!this.ganttChart.checkPosParentTask(parentTask,task)){

return false;

}

task.parentTask = parentTask;

var _parentTask = this.getTaskById(parentTask.id);

var isHide = false;

if(_parentTask.cTaskItem[0].style.display == "none"){

isHide = true;

}else if(_parentTask.cTaskNameItem[2]){

if(!_parentTask.isExpanded){

isHide = true;

}

if(isHide){

if(_parentTask.childTask.length == 0){

this.ganttChart.openTree(_parentTask.parentTask);

}else{

this.ganttChart.openTree(_parentTask);

}

if(prevIoUsTaskId != ""){

var predTask = this.project.getTaskById(prevIoUsTaskId);

if(!predTask){

return false;

}

if(predTask.parentTask){

if(predTask.parentTask.id != task.parentTask.id){

return false;

}

}else{

return false;

}

if(!this.ganttChart.checkPosPrevIoUsTask(predTask,task)){

this.ganttChart.correctPosPrevIoUsTask(predTask,task);

}

task.prevIoUsTask = predTask;

}

var isAdd = false;

if(sortrequired) for(var i = 0; i <parentTask.cldTasks.length; i++){

if(task.startTime <parentTask.cldTasks[i].startTime){

parentTask.cldTasks.splice(i,task);

if(i > 0){

parentTask.cldTasks[i - 1].nextChildTask =parentTask.cldTasks[i];

parentTask.cldTasks[i].prevIoUsChildTask =parentTask.cldTasks[i - 1];

}

if(parentTask.cldTasks[i + 1]){

parentTask.cldTasks[i + 1].prevIoUsChildTask =parentTask.cldTasks[i];

parentTask.cldTasks[i].nextChildTask = parentTask.cldTasks[i +1];

}

isAdd = true;

break;

}

if(!isAdd){

if(parentTask.cldTasks.length > 0){

parentTask.cldTasks[parentTask.cldTasks.length -1].nextChildTask = task;

task.prevIoUsChildTask =parentTask.cldTasks[parentTask.cldTasks.length - 1];

}

parentTask.cldTasks.push(task);

}

if(parentTask.cldTasks.length == 1){

_parentTask.cTaskNameItem[2] =_parentTask.createTreeImg();

}

_task = new GanttTaskControl(task,this,this.ganttChart);

_task.create();

if(task.nextChildTask) _task.nextChildTask =_task.project.getTaskById(task.nextChildTask.id);

_task.adjustPanelTime();

var rowHeight = this.ganttChart.heightTaskItem +this.ganttChart.heightTaskItemExtra;

_task.shiftCurrentTasks(_task,rowHeight);//23

}else{

startTime = startTime || this.project.startDate;

task = new GanttTaskItem({

id: id,

isApproval: isApproval

});

if(task.startTime <= this.ganttChart.startDate){

return false;

}

if(prevIoUsTaskId != ""){

var predTask = this.project.getTaskById(prevIoUsTaskId);

if(!predTask){

return false;

}

if(!this.ganttChart.checkPosPrevIoUsTask(predTask,task);

}

if(predTask.parentTask){

return false;

}

task.prevIoUsTask = predTask;

}

var isAdd = false;

if(sortrequired){

for(var i = 0; i < this.project.parentTasks.length;i++){

var ppTask = this.project.parentTasks[i];

if(startTime < ppTask.startTime){

this.project.parentTasks.splice(i,task);

if(i > 0){

this.project.parentTasks[i - 1].nextParentTask = task;

task.prevIoUsParentTask = this.project.parentTasks[i -1];

}

if(this.project.parentTasks[i + 1]){

this.project.parentTasks[i + 1].prevIoUsParentTask =task;

task.nextParentTask = this.project.parentTasks[i + 1];

}

isAdd = true;

break;

}

if(!isAdd){

if(this.project.parentTasks.length > 0){

this.project.parentTasks[this.project.parentTasks.length -1].nextParentTask = task;

task.prevIoUsParentTask =this.project.parentTasks[this.project.parentTasks.length -1];

}

this.project.parentTasks.push(task);

}

_task = new GanttTaskControl(task,this.ganttChart);

_task.create();

if(task.nextParentTask) _task.nextParentTask =_task.project.getTaskById(task.nextParentTask.id);

_task.adjustPanelTime();

this.arrTasks.push(_task);

var rowHeight = this.ganttChart.heightTaskItem +this.ganttChart.heightTaskItemExtra;

_task.shiftCurrentTasks(_task,rowHeight);

this.projectItem[0].style.display = "inline";

this.setPercentCompleted(this.getPercentCompleted());

this.shiftProjectItem();

this.showDescrProject();

}

this.ganttChart.checkHeighPanelTasks();

this.ganttChart.checkPosition();

return _task;

乱七八糟的一大坨，基本看不懂，应该是一些验证的东西，好在我只是加个属性，不需要验证日期是否过期什么的，所以，加上标红的两句，ok了。在现实对话框的时候，又涉及到了一些赋值操作等一些地方需要小修小补的，代码不贴了，太多。

contextMenuTab.js中新增 reapprovalTaskAction函数，设置修改后的审批值

reapprovalTaskAction: function(){

var isApproval = this.arrItems[0].control.get('value');

//alert('isApproval---'+isApproval);

this.object. setIsApproval(isApproval);

this.hide();

所以还要一个setIsApproval函数，在ganttTaskControl.js中新增次函数

setIsApproval: function(isApproval){// reapproval function byHu Wei

this.taskItem.isApproval = isApproval;

//get the percentage node rc0,consult the functionsetPercentCompleted :by Hu Wei

var trow =this.cTaskItem[0].childNodes[0].firstChild.rows[0],

rc0 = trow.cells[0],rc1 = trow.cells[1];

if(isApproval=='no'){

domClass.replace(rc0.firstChild,"ganttImageTaskProgressFi lledNo","ganttImageTaskProgressFi lled");

}else {

domClass.replace(rc0.firstChild,"ganttImageTaskProgressFi lled","ganttImageTaskProgressFi lledNo");

}

}，

这样就基本ok了，后面还要求新增task的时候，id要实现自动话，其实就是遍历整个json数据，取最大值了，只是人家插件本来的初衷是id可以是非数字的，所以这个功能有点奇怪，暂不贴出来。

最后，说了这么多，也贴了这么多代码，相信没人看得懂了，我自己以后也未必看得懂，

dojo甘特图<a href= 插件扩展gantt@H_502_718@chart（一）" title="dojo甘特图插件扩展ganttchart（一）" style="line-height:1.5; text-indent:2em" src="http://simg.sinajs.cn/blog7style/images/common/sg_trans.gif"> ，所以还是献上demo的好，没找到上传附件的功能，想要附件的，请评论并留下邮箱，我会发给你的。嘿嘿，突然想起，曾经在eoe也这样搞过，最后有200多条回复，发邮件差点累死，而且最后还有个学弟拿了我的代码去做毕业设计，最后还混了顿饭，这次有可能也混顿饭吃吗？

原文链接：https://www.f2er.com/dojo/291068.html

dojo甘特图插件扩展ganttcha…

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