Break line in long label text - label

Question

Is there any trick to break a label text? Because '\n' '\r' '\n\r' don't work.
Many Thanks

Answer 1

if you use those 2 parameters you do what you want don't you ?
app.createLabel(text).setWidth(width).setWordWrap(true)
here is an example (among other widgets ;-):
function showurl() {
var app = UiApp.createApplication();
app.setTitle("Anchor in a popup ;-)");
var panel = app.createFlowPanel()
var image = app.createImage('https://sites.google.com/site/appsscriptexperiments/home/photo.jpg').setPixelSize(50, 50)
var link = app.createAnchor('This is your link', 'https://sites.google.com/site/appsscriptexperiments/home');
var lab = app.createLabel("wrap it because it's too narrow").setWidth(90).setWordWrap(true);
var quit = app.createButton('quit');
panel.add(image).add(link).add(lab).add(quit);
app.add(panel);
var doc = SpreadsheetApp.getActive();
doc.show(app);
}
EDIT : I found an old post(on the Google group forum, thanks again Henrique ;-) about breaking lines in toast messages and here is the code I used for that case... the principle should work for Labels too but I didn't try.
To use it, just use \n (where you want to break the line) in a variable containing your text and pass it through this function. (there are some comment in the script to explain)
function break_(msg){
var temp = escape(msg);// shows codes of all chars
msg = unescape(temp.replace(/%20/g,"%A0")); // replace spaces by non break spaces
temp = msg.replace("\n"," "); // and replace the 'newline' by a normal space
return temp; // send back the result
}

Answer 2

Would something like this work?
//takes a line of text and returns a flex table broken by \n
function breakLabel(text) {
var app = UiApp.getActiveApplication();
var flexTable = app.createFlexTable();
text = text.split('\n'); // split into an array
for (var i=0; i<text.length; i++){
flexTable.setWidget(i, 0, app.createLabel(text[i].toString()));
}
return flexTable;
}

Answer 3

Adding them to a vertical panel helps as well (not the way you want, but still..):
var vPanel = app.createVerticalPanel().setSize(100,100);
var label = app.createLabel('predominantly blabla blala blabla');
app.add(vPanel.add(label));
See reference

Answer 4

For anyone just now stumbling upon this, the best solution seems to be creating an HTML output for anything that needs line breaks.
Documentation
var htmlApp = HtmlService
.createHtmlOutput('<p>A change of speed, a change of style...</p>')
.setSandboxMode(HtmlService.SandboxMode.IFRAME)
.setTitle('My HtmlService Application')
.setWidth(250)
.setHeight(300);
SpreadsheetApp.getActiveSpreadsheet().show(htmlApp);
// The script resumes execution immediately after showing the dialog.