aardio 范例：BT 下载 / WinForm

//BT 下载 / WinForm
import win.ui;
/*DSG{{*/
var winform = win.form(text="aria2 下载 —— 如果 BT 下载没速度，先找个热门种子下载就可以了";right=921;bottom=537;bgcolor=16777215;)
winform.add(
btnAdd={cls="button";text="调用 aria2 下载文件";left=605;top=332;right=747;bottom=368;db=1;dr=1;z=3;};
listview={cls="listview";left=12;top=7;right=912;bottom=318;bgcolor=16777215;db=1;dl=1;dr=1;dt=1;edge=1;fullRow=1;z=1;};
txtData={cls="edit";left=32;top=336;right=585;bottom=367;align="right";db=1;dl=1;dr=1;edge=1;z=2;};
txtMessage={cls="edit";left=8;top=380;right=909;bottom=523;db=1;dl=1;dr=1;edge=1;hscroll=1;multiline=1;vscroll=1;z=4;};

)
/*}}*/

//启动 aria2 服务器
import process.aria2;
var aria2 = process.aria2();  

//注意看错误信息。
aria2.onError = function(errMsg,rpcErr){
    winform.txtMessage.print(errMsg);
}

//启动下载服务器
aria2.startServer( maxConcurrentDownloads = 10 );

winform.listview.insertColumn("文件",250); 
winform.listview.insertColumn("速度",80);
winform.listview.insertColumn("已下载",120); 
winform.listview.insertColumn("状态",-1); 
winform.listview.insertColumn("连接数",120); 

var aria2Ui = {
    downloadData = {};

    getGid = function(item){
        return table.find(owner.downloadData,item); 
    }

    addTaskInfo = function(gid,url,status){
        if(!gid){
            var name = bencoding.magnet.getName(url);
            winform.listview.addItem({
                name,null,null,"出错了："+ (status:"未知错误");
            });
        } 
        else {
            var taskName = aria2.taskName(gid) 

            var item = owner.downloadData[gid];
            if(!item){ 
                var item = winform.listview.addItem({
                    taskName,null,null,status || "正在下载" 
                }); 
                owner.downloadData[gid] =  item;
            }
            else {
                winform.listview.setItemText(taskName,item,1); 
                winform.listview.setItemText(status : "正在下载",item,4); 
            } 
        }
    } 

    updateStatus = function(gid,status){
        var item = owner.downloadData[gid]
        if(!item){
            owner.addTaskInfo(gid);
            item = owner.downloadData[gid]
        }

        winform.listview.setItemText(status,item,4); 
    }

    updateProgress = function(gid,progress){
        var item = owner.downloadData[gid]
        if(!item){
            owner.addTaskInfo(gid);
            item = owner.downloadData[gid]
        }

        if(progress){
            winform.listview.setItemText(progress.connections,item,5); 
            winform.listview.setItemText(math.size64(progress.downloadSpeed,item).format() + "/s",item,2); 
            winform.listview.setItemText(math.size64(progress.completedLength).format() 
                + "/" + math.size64(progress.totalLength).format(),item,3);     
        }
        else {
            winform.listview.setItemText("",item,2); 
            winform.listview.setItemText("",item,5); 
            var progress = aria2.tellStatus(gid,"totalLength");
            winform.listview.setItemText( math.size64(progress.totalLength).format(),item,3);   
        } 
    }  
}

//监听 aria2 事件
aria2.onDownloadStart = function(task){
    aria2Ui.addTaskInfo(task.gid,,"正在下载")   
}

aria2.onDownloadPause = function(task){ 
    aria2Ui.updateStatus(task.gid,"暂停下载");  
}

aria2.onDownloadStop = function(task){
    aria2Ui.updateStatus(task.gid,"已停止"); 
} 

aria2.onDownloadComplete = function(task){
    aria2Ui.updateStatus(task.gid,"已完成");     
    aria2Ui.updateProgress(task.gid);
} 

aria2.onDownloadError = function(task){
    var errMsg = aria2.taskErrorMessage(param.gid); 
    aria2Ui.updateStatus(task.gid,errMsg);  
} 

//调用 aria2 下载
winform.btnAdd.oncommand = function(id,event){
    var url = winform.txtData.text;
    if(!#url){
        winform.msgboxErr("请输入下载地址或种子文件路径")
    }

    aria2.taskAdd(url,function(gid,err){

        if(err){
            aria2Ui.addTaskInfo(null,url,err[["message"]]); 
        } 
        else {
            aria2Ui.addTaskInfo(gid,url,"添加成功" ); 
        }    
    });
}
winform.txtData.setCueBannerText("请输入下载地址或种子文件路径");

//获取进度
//https://aria2.github.io/manual/en/html/aria2c.html#aria2.tellStatus 
updateDownloadStatus = function(){

    aria2.tellActive(function(result,err){
        if(result) { 
            for(k,v in result){ 
                aria2Ui.updateProgress(v.gid,v); 
            } 
        }  
    },"gid","status","connections","downloadSpeed","totalLength","completedLength"); 

    aria2.tellWaiting(0,10,function(result,err){
        if(result) {
            for(k,v in result){
                aria2Ui.updateProgress(v.gid,v); 
            } 
        }  
    },"gid","status","connections","downloadSpeed","totalLength","completedLength");  
}

//启动就绪执行
aria2.ready(
    function(){

        //查看默认配置。 
        //winform.txtMessage.print(aria2.getGlobalOption());

        //创建定时器，更新下载进度
        winform.setInterval(updateDownloadStatus,1500);  
    }
)

//下载任务右键管理菜单
import win.ui.menu;
winform.listview.onRightClick = function(item,subItem,nmListView){ 

        //创建弹出菜单
        var gid = aria2Ui.getGid(nmListView.iItem);
        if(!gid) return;

        var statusInfo = aria2.tellStatus(gid,"status","belongsTo");
        if(!statusInfo) return;

        var popmenu = win.ui.popmenu(winform); 
        popmenu.add('移除',function(id){
            aria2.taskRemove(gid);
            winform.listview.delItem(nmListView.iItem); 
        } ) 

        if(statusInfo.status == "active"){
            popmenu.add('暂停',function(id){ 
                var gid = aria2Ui.getGid(nmListView.iItem);
                aria2.taskPause(gid); 
            } ) 
        }
        if(statusInfo.status == "paused"){
            popmenu.add('开始下载',function(id){ 
                var gid = aria2Ui.getGid(nmListView.iItem);
                aria2.taskUnpause(gid); 
            } ) 
        }

        var path = aria2.taskFilePath(gid)
        if(#path){
            popmenu.add('浏览文件',function(id){
                process.exploreSelect(path)
            } ) 
        }

        popmenu.add('复制链接',function(id){
            var url = aria2.taskUrl(gid);
            if(url){
                import win.clip;
                win.clip.write(url);
            }
        } ) 

        popmenu.popup(); 
} 

winform.listview.enableDoubleBuffering();

winform.show(); 
win.loopMessage();

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