我试图了解表格小部件在加载页面时的排序是如何工作的。对于使用Table小部件的大多数页面,页面加载按第一列排序。
我确实在页面中的Table面板的onAttach事件中看到了以下代码。我想知道这是否是在页面加载时设置排序的代码。
// GENERATED CODE: modify at your own risk
window._am = window._am || {};
if (!window._am.TableState) {
window._am.TableState = {};
window._am.inFlight = false;
}
if (!window._am.sortTableBy) {
window._am.sortTableBy = function(datasource, field, fieldHeader, tableState) {
if (!field) {
throw "Can't sort the table because specified field was not found.";
}
tableState.inFlight = true;
if (tableState.sortByField === field.name) {
tableState.ascending = !tableState.ascending;
} else {
if (tableState.fieldHeader) {
tableState.fieldHeader.text = tableState.fieldHeaderText;
tableState.fieldHeader.ariaLabel = "";
}
tableState.sortByField = field.name;
tableState.ascending = true;
tableState.fieldHeader = fieldHeader;
tableState.fieldHeaderText = fieldHeader.text;
}
datasource.query.clearSorting();
var sortDirection = tableState.ascending ? "ascending" : "descending";
datasource.query.sorting[field.name]["_" + sortDirection]();
datasource.query.pageIndex = 1;
datasource.load(function() {
tableState.inFlight = false;
fieldHeader.text = fieldHeader.text.replace(/ (\u25B2|\u25BC)/g, "");
if (tableState.sortByField === field.name) {
fieldHeader.ariaLabel = fieldHeader.text + " sort " + sortDirection;
fieldHeader.text = fieldHeader.text + (tableState.ascending ? " \u25B2" : " \u25BC");
app.accessibility.announce(fieldHeader.ariaLabel);
}
});
};
}