TiddlyWiki5/core/modules/editor/operations/text/wrap-selection.js

53 lines
2.5 KiB
JavaScript

/*\
title: $:/core/modules/editor/operations/text/wrap-selection.js
type: application/javascript
module-type: texteditoroperation
Text editor operation to wrap the selection with the specified prefix and suffix
\*/
(function(){
/*jslint node: true, browser: true */
/*global $tw: false */
"use strict";
exports["wrap-selection"] = function(event,operation) {
if(operation.selStart === operation.selEnd) {
// No selection; check if we're within the prefix/suffix
if(operation.text.substring(operation.selStart - event.paramObject.prefix.length,operation.selStart + event.paramObject.suffix.length) === event.paramObject.prefix + event.paramObject.suffix) {
// Remove the prefix and suffix unless they comprise the entire text
if(operation.selStart > event.paramObject.prefix.length || (operation.selEnd + event.paramObject.suffix.length) < operation.text.length ) {
operation.cutStart = operation.selStart - event.paramObject.prefix.length;
operation.cutEnd = operation.selEnd + event.paramObject.suffix.length;
operation.replacement = "";
operation.newSelStart = operation.cutStart;
operation.newSelEnd = operation.newSelStart;
}
} else {
// Wrap the cursor instead
operation.cutStart = operation.selStart;
operation.cutEnd = operation.selEnd;
operation.replacement = event.paramObject.prefix + event.paramObject.suffix;
operation.newSelStart = operation.selStart + event.paramObject.prefix.length;
operation.newSelEnd = operation.newSelStart;
}
} else if(operation.text.substring(operation.selStart,operation.selStart + event.paramObject.prefix.length) === event.paramObject.prefix && operation.text.substring(operation.selEnd - event.paramObject.suffix.length,operation.selEnd) === event.paramObject.suffix) {
// Prefix and suffix are already present, so remove them
operation.cutStart = operation.selStart;
operation.cutEnd = operation.selEnd;
operation.replacement = operation.selection.substring(event.paramObject.prefix.length,operation.selection.length - event.paramObject.suffix.length);
operation.newSelStart = operation.selStart;
operation.newSelEnd = operation.selStart + operation.replacement.length;
} else {
// Add the prefix and suffix
operation.cutStart = operation.selStart;
operation.cutEnd = operation.selEnd;
operation.replacement = event.paramObject.prefix + operation.selection + event.paramObject.suffix;
operation.newSelStart = operation.selStart;
operation.newSelEnd = operation.selStart + operation.replacement.length;
}
};
})();