javascript – 使用拖放重新排列DataView的项目
作者:互联网
我有一个带有以下模板的ExtJS DataView:
<ul>
<tpl for=".">
<li class="report-field" id="{listId}">
{[this.getReorderLinks(values, xindex, xcount)]}
<span class="field-title small" data-qtip="{displayName}">{displayName}</span>
<i class="field-remove" title="' + deleteLabel + '"></i>
</li>
</tpl>
</ul>
这使得每个项目列表看起来像这样:
用户可以点击不同的图标并执行相关操作,按顺序上下移动并删除.
请注意,这些项目使用拖放功能添加到数据视图中,其中有另一个源数据视图容器,我可以从中拖动项目并添加到此处.虽然这些向上/向下箭头在重新排序时工作正常,但我想在内部使用drag-n-drop重新排序这些项目.
因此,为了使每个单独的项目在同一区域中可拖动和可放置,我使用了数据视图的刷新事件和注册的DND,如下所示:
listeners: {
'refresh': function(dataview, eOpts) {
var fieldsList = Ext.query('.added-field');
// Iterate over the list and make each item draggable/droppable.
Ext.each(fieldsList,function(field){
var dragSource,
fieldId;
fieldId = field.id;
dragSource = new Ext.dd.DragSource(field, {
isTarget : false
});
dropZone = new Ext.dd.DropTarget(field);
dragSource.dragData = {
record: me.viewStore.findRecord('listId', fieldId),
fieldId: fieldId
};
dropZone.notifyDrop = function(source, event, params) {
var targetRecord = me.viewStore.findRecord('listId', fieldId),
targetRecordIdx = me.viewStore.indexOf(targetRecord),
sourceRecordIdx = me.viewStore.indexOf(params.record);
//Perform rearrangement in the store.
me.viewStore.removeAt(sourceRecordIdx);
me.viewStore.insert(targetRecordIdx, params.record);
return true;
};
});
}
但它给了我奇怪的行为;当我尝试在“人员城市”之上拖动“人员电子邮件”时,DataView会被破坏,如下所示:
另外,我得到Uncaught TypeError:当drop操作完成时,无法读取未定义的属性’internalId’.我甚至尝试将调用removeAt()和insert()推迟一定的ms,但仍然没有运气,而且,ExtJS没有可用于Drag n Drop to Reorder DataView项目的文档或工作示例.
任何帮助将不胜感激,谢谢.
解决方法:
这让我想起a bad experience我在ExtJS 4中拖拽掉了.无论如何,你可以尝试这个plugin.否则,这是我尝试过的东西(滚动尚未处理)(jsFiddle):
new Ext.view.DragZone({
view: view,
ddGroup: 'test',
dragText: 'test'
});
new Ext.view.DropZone({
view: view,
ddGroup: 'test',
handleNodeDrop : function(data, record, position) {
var view = this.view,
store = view.getStore(),
index, records, i, len;
if (data.copy) {
records = data.records;
data.records = [];
for (i = 0, len = records.length; i < len; i++) {
data.records.push(records[i].copy(records[i].getId()));
}
} else {
data.view.store.remove(data.records, data.view === view);
}
index = store.indexOf(record);
if (position !== 'before') {
index++;
}
store.insert(index, data.records);
view.getSelectionModel().select(data.records);
}
});
标签:dataview,javascript,extjs,drag-and-drop,extjs4 来源: https://codeday.me/bug/20191006/1858853.html