I am trying to write a function which takes a list of Rich Text Content Controls and a single string as argument, and which replaces the content of all matching content controls with this string.
While this works with a smaller amount of content controls, it fails with documents with a huge amount of them. I have to work with documents with over 700 Content Controls with individual titles. In this case, the code just replaces the first 66X CCs and then aborts with a GeneralException. I assume this is just due to the huge amount of content controls. I am having similar problems, when I try to register bindings for all these CCs (GeneralException). But this is a different topic.
I tried to work around this problem, by limiting the amounts of changes per .sync() and looping through the CCs, performing as many loops as necessary. However, this is not that easy, due to the asynchronous nature of office-js. I am not very familiar with javascript-async-promise-programming so far. But this is what I have come up with:
function replaceCCtextWithSingleString (CCtitleList, string) {
var maxPerBatch = 100;
/*
* A first .then() block is executed to get proxy objects for all selected CCs
*
* Then we would replace all the text-contents in one single .then() block. BUT:
* Word throws a GeneralException if you try to replace the text in more then 6XX CCs in one .then() block.
* In consequence we only process maxPerBatch CCs per .then() block
*/
Word.run(function (context) {
var CCcList = [];
// load CCs
for(var i = 0; i < CCtitleList.length; i++) {
CCcList.push(context.document.contentControls.getByTitle(CCtitleList[i]).load('id'));
}
return context.sync().then(function () { // synchronous
var CClist = [];
// aggregate list of CCs
for(var i = 0; i < CCcList.length; i++) {
if(CCcList[i].items.length == 0) {
throw 'Could not find CC with title "'+CCtitleList[j]+'"';
}
else {
CClist = CClist.concat(CCcList[i].items);
}
}
$('#status').html('Found '+CClist.length+' CCs matching the criteria. Started replacing...');
console.log('Found '+CClist.length+' CCs matching the criteria. Started replacing...');
// start replacing
return context.sync().then((function loop (replaceCounter, CClist) {
// asynchronous recoursive loop
for(var i = 0; replaceCounter < CClist.length && i < maxPerBatch; i++) { // loop in loop (i does only appear in condition)
// do this maxPerBatch times and then .sync() as long as there are still unreplaced CCs
CClist[replaceCounter].insertText(string, 'Replace');
replaceCounter++;
}
if(replaceCounter < CClist.length) return context.sync() // continue loop
.then(function () {
$('#status').html('...replaced the content of '+replaceCounter+' CCs...');
return loop(replaceCounter, numCCs);
});
else return context.sync() // end loop
.then(function () {
$('#status').html('Replaced the content of all CCs');
});
})(0, CClist));
});
}).catch(function (error) {
$('#status').html('<pre>Error: ' + JSON.stringify(error, null, 4) + '</pre>');
console.log('Error: ' + JSON.stringify(error, null, 4));
if (error instanceof OfficeExtension.Error) {
console.log('Debug info: ' + JSON.stringify(error.debugInfo, null, 4));
}
throw error;
});
}
However... it is not working. It replaces the first 100 CCs and then stops. Without a failure, without an exception or anything. The return loop(replaceCounter, CClist); is just not executed and I don't know why. If I try to step into this line in the debugger it throws me somewhere in the office-js code.
Any suggestions?
Edit:
I updated my code based on the suggestions of Juan Balmori and it works as a charm:
function replaceCCtextWithSingleString_v1_1 (CCtitleList, string) {
Word.run(function (context) {
var time1 = Date.now();
// load the title of all content controls
var CCc = context.document.contentControls.load('title');
return context.sync().then(function () { // synchronous
// extract CC titles
var documentCCtitleList = [];
for(var i = 0; i < CCc.items.length; i++) { documentCCtitleList.push(CCc.items[i].title); }
// check for missing titles and replace
for(var i = 0; i < CCtitleList.length; i++) {
var index = documentCCtitleList.indexOf(CCtitleList[i]);
if(index == -1) { // title is missing
throw 'Could not find CC with title "'+CCtitleList[i]+'"';
}
else { // replace
CCc.items[index].insertText(string, 'Replace');
}
}
$('#status').html('...replacing...');
return context.sync().then(function () {
var time2 = Date.now();
var tdiff = time2-time1;
$('#status').html('Successfully replaced all selected CCs in '+tdiff+' ms');
});
});
}).catch(function (error) {
$('#status').html('<pre>Error: ' + JSON.stringify(error, null, 4) + '</pre>');
console.log('Error: ' + JSON.stringify(error, null, 4));
if (error instanceof OfficeExtension.Error) {
console.log('Debug info: ' + JSON.stringify(error.debugInfo, null, 4));
}
});
}
It still takes 13995 ms to complete, but at least it works :-)
Any ideas, what was provoking the GeneralException though?
I posted a new question concerning the speed issue: What is the fastest way of replacing the text of many content controls via office-js?
