easyui的treegrid的級聯勾選子節點,或者級聯勾選父節點

級聯勾選子節點:

步驟:

1.在treegrid的onCheck事件中寫上函數(級聯勾選子節點):

onCheck : function(row){
        t = $(this);
        opts = t.treegrid("options");
        if (opts.checkOnSelect && opts.singleSelect) { return; }
        var idField = opts.idField, id = row[idField], children, checked, parent = row;
        //若是當前節點被勾選,那麼勾選該節點的子節點
        $.each(t.treegrid("getChildren", id), function (i, n) {
             if (!t.treegrid("isChecked", n[idField])) { t.treegrid("check", n[idField]); }
        });
},

2.在onUncheck事件中寫上函數(級聯取消勾選子節點):

t = $(this);
    opts = t.treegrid("options");
    if (opts.checkOnSelect && opts.singleSelect) { return; }
    var idField = opts.idField, id = row[idField], children, checked, parent = t.treegrid("getParent", id);
    $.each(t.treegrid("getChildren", id), function (i, n) {
    t.treegrid("uncheck", n[idField]);
});

第二種:選擇子節點須要將父節點選中

onCheck事件:

​
onCheck : function(row){
        	t = $(this);
        	opts = t.treegrid("options");
            if (opts.checkOnSelect && opts.singleSelect) { return; }
            var idField = opts.idField, id = row[idField], children, checked, parent = t.treegrid("getParent", id);
            while (parent) {
                    children = t.treegrid("getChildren", parent[idField]);
                    checked = t.treegrid("getChecked");
                    if (!$.array.some(children, function (val) { return !$.array.contains(checked, val); })) {
                        if (!t.treegrid("isChecked", parent[idField])) { t.treegrid("check", parent[idField]); }
                    }
                    parent = t.treegrid("getParent", parent[idField]);
             }
             $.each(t.treegrid("getChildren", id), function (i, n) {
                    //若是子節點沒有勾選,那麼勾選子節點
                    if (!t.treegrid("isChecked", n[idField])) { t.treegrid("check", n[idField]); }
             });
}
       

​

onUncheck事件:

onUncheck:function(row){
        	t = $(this);
        	opts = t.treegrid("options");
            if (opts.checkOnSelect && opts.singleSelect) { return; }
            var idField = opts.idField, id = row[idField], children, checked, parent = t.treegrid("getParent", id);
            while (parent) {
                    children = t.treegrid("getChildren", parent[idField]);
                    checked = t.treegrid("getChecked");
                    if (!$.array.some(children, function (val) { return $.array.contains(checked, val); })) {
                        if (t.treegrid("isChecked", parent[idField])) { t.treegrid("uncheck", parent[idField]); }
                    }
                    parent = t.treegrid("getParent", parent[idField]);
             }
             $.each(t.treegrid("getChildren", id), function (i, n) {
                    t.treegrid("uncheck", n[idField]);
             });
},

​

總結下:

treegrid上面的兩個函數:

onCheck : function(row){
   t = $(this);
   checkChildren(t,row);
},
onUncheck:function(row){
   t = $(this);
   unCheckChildren(t,row);
},

自定義函數:

/**
 * treegrid的級聯勾選和級聯取消勾選子節點
 */
function checkChildren(t,row){
	opts = t.treegrid("options");
    if (opts.checkOnSelect && opts.singleSelect) { return; }
    var idField = opts.idField, id = row[idField], children, checked, parent = row;
    //若是當前節點被勾選,那麼勾選該節點的子節點
    $.each(t.treegrid("getChildren", id), function (i, n) {
        if (!t.treegrid("isChecked", n[idField])) { t.treegrid("check", n[idField]); }
    });
}
function unCheckChildren(t,row){
	opts = t.treegrid("options");
    if (opts.checkOnSelect && opts.singleSelect) { return; }
    var idField = opts.idField, id = row[idField], children, checked, parent = t.treegrid("getParent", id);
    $.each(t.treegrid("getChildren", id), function (i, n) {
        t.treegrid("uncheck", n[idField]);
    });
}