How do I find and select a next bold word - google-apps-script

Question

From the https://gist.github.com/oshliaer/d468759b3587cfb424348fa722765187 , It is possible to select a particular word from the findText, I want to implement the same for bold words only
I have a function to find bold. How do I modify the above gist?
var startFlag = x;
var flag = false;
for (var i = x; i < y; i++) {
if (text.isBold(i) && !flag) {
startFlag = i;
flag = true;
} else if (!text.isBold(i) && flag) {
flag = false;
rangeBuilder.addElement(text, startFlag, i - 1);
doc.setSelection(rangeBuilder.build());
return;
}
}
if (flag) {
rangeBuilder.addElement(text, startFlag, i - 1);
doc.setSelection(rangeBuilder.build());
return;
}

Answer 1

Let's assume another algorithm
/*
* #param {(DocumentApp.ElementType.LIST_ITEM | DocumentApp.ElementType.PARAGRAPH)} element
*/
function hasBold(element, start) {
var text = element.editAsText();
var length = element.asText().getText().length;
var first = -1;
var end = -1;
while (start < length) {
if (first < 0 && text.isBold(start)) {
first = start;
}
if (first > -1 && !text.isBold(start)) {
end = start - 1;
return {
s: first,
e: end
}
}
start++;
}
if (first > -1) {
return {
s: first,
e: length - 1
}
}
return false;
}
It's not clean but I've tested it and it works fine.
hasBold lets us finding bolds in the current element.
Finally, we have to loop this feature within document.getBody().
You could to get the full code here find next bold text in google document.
Also you could try it on a copy
A new idea
The Direct searcing
The best way is to use a callback while it is checked
var assay = function (re) {
var text = re.getElement()
.asText();
for (var offset = re.getStartOffset(); offset <= re.getEndOffsetInclusive(); offset++) {
if (!text.isBold(offset)) return false;
}
return true;
}
function findNextBold() {
var sp = 'E.';
Docer.setDocument(DocumentApp.getActiveDocument());
var rangeElement = Docer.findText(sp, Docer.getActiveRangeElement(), assay);
rangeElement ? Docer.selectRangeElement(rangeElement) : Docer.setCursorBegin();
}
The Approx searching
var assay = function(re) {
var text = re.getElement().asText();
var startOffset = re.getStartOffset();
var endOffset = re.getEndOffsetInclusive() + 1;
for (var offset = startOffset; offset < endOffset; offset++) {
if (!text.isBold(offset)) return false;
}
return this.test(text.getText().slice(startOffset, endOffset));
}
function findNextBold() {
var searchPattern = '[^ ]+#[^ ]+';
var testPattern = new RegExp('^[A-Z0-9._%+-]+#[A-Z0-9.-]+\.[A-Z]{2,4}$');
Docer.setDocument(DocumentApp.getActiveDocument());
var rangeElement = Docer.findText(searchPattern, Docer.getActiveRangeElement(), assay.bind(testPattern));
rangeElement ? Docer.selectRangeElement(rangeElement) : Docer.setCursorBegin();
}
Docer

Answer 2

Yes. it is possible to find bold text. You need to use findText(searchPattern) to search the contents of the element for the specific text pattern using regular expressions. The provided regular expression pattern is independently matched against each text block contained in the current element. Then, use isBold() to retrieve the bold setting. It is a Boolean which returns whether the text is bold or null.