有没有办法用Office.js突出显示powerpoint演示文稿中的文本

// 加载PowerPoint演示文稿
Office.context.document.getFilePropertiesAsync(function (result) {
  if (result.status === Office.AsyncResultStatus.Succeeded) {
    var fileUrl = result.value.url;
    Office.context.document.getFileAsync(Office.FileType.Presentation, function (result) {
      if (result.status === Office.AsyncResultStatus.Succeeded) {
        var file = result.value;
        var sliceCount = file.sliceCount;
        var slicesReceived = 0;
        var docData = [];

        // 获取幻灯片对象
        for (var i = 0; i < sliceCount; i++) {
          file.getSliceAsync(i, function (result) {
            if (result.status === Office.AsyncResultStatus.Succeeded) {
              var slice = result.value;
              var data = slice.data;
              docData = docData.concat(data);
              slicesReceived++;

              if (slicesReceived === sliceCount) {
                var pptData = new Uint8Array(docData);

                // 使用Office.js API操作PowerPoint演示文稿
                Office.context.document.close();
                Office.context.document.addHandlerAsync(Office.EventType.DocumentSelectionChanged, function () {
                  var selectedText = Office.context.document.getSelectedDataAsync(Office.CoercionType.Text, function (result) {
                    if (result.status === Office.AsyncResultStatus.Succeeded) {
                      var searchText = result.value;

                      // 在幻灯片中查找文本并突出显示
                      var slides = Office.context.document.presentation.slides;
                      for (var i = 0; i < slides.length; i++) {
                        var slide = slides.items[i];
                        var shapes = slide.shapes;
                        for (var j = 0; j < shapes.length; j++) {
                          var shape = shapes.items[j];
                          if (shape.hasTextFrame) {
                            var textFrame = shape.textFrame;
                            var paragraphs = textFrame.textRange.paragraphs;
                            for (var k = 0; k < paragraphs.length; k++) {
                              var paragraph = paragraphs.items[k];
                              var text = paragraph.text;
                              if (text.indexOf(searchText) !== -1) {
                                // 突出显示文本
                                paragraph.font.color = "#FF0000"; // 设置字体颜色为红色
                                paragraph.font.bold = true; // 设置字体为粗体
                              }
                            }
                          }
                        }
                      }
                    }
                  });
                });
              }
            }
          });
        }
      }
    });
  }
});