/**
* @fileoverview With an editor selection, pressing "[", "(" or "{" will place
* matching braces around the selected text.
* @author Todd Whiteman (toddw@activestate.com)
* @version 0.1
*/
if (typeof(window.extensions) == 'undefined') {
window.extensions = {};
}
if (extensions.smartbraces && extensions.smartbraces.onkeypress_handler) {
// Remove the existing trigger handler, we'll re-instate it.
var editor_pane = ko.views.manager.topView;
editor_pane.removeEventListener('keypress', extensions.smartbraces.onkeypress_handler, true);
}
extensions.smartbraces = {};
(function() {
var log = ko.logging.getLogger("SmartBraces");
//log.setLevel(ko.logging.LOG_DEBUG);
// The accepted keypress characters.
var brace_charcodes = ["{", "(", "["];
var matching_brace_charcodes = ["}", ")", "]"];
this.onkeypress_handler = function(e) {
try {
// Only trap brace keypresses that aren't used with a modifier.
if (!e.charCode || e.ctrlKey || e.altKey) return;
// Only trap the required brace keys.
var key = String.fromCharCode(e.charCode);
var idx = brace_charcodes.indexOf(key);
if (idx < 0) return;
log.debug("onkeypress_handler:: key: " + key);
// Create shorthands for 'currentView'
var view = ko.views.manager.currentView;
/**
* @type {Components.interfaces.ISciMoz}
*/
var editor = view.scimoz;
// Don't do anything if there isn't a selection within the document.
var selection = editor.selText;
if (!selection) {
return;
}
var anchor = editor.anchor;
var cursorPos = editor.currentPos;
editor.replaceSel(key + selection + matching_brace_charcodes[idx]);
// Restore the selection.
if (anchor < cursorPos) {
editor.anchor = anchor;
editor.currentPos = cursorPos + 2;
} else {
editor.anchor = anchor + 2;
editor.currentPos = cursorPos;
}
// Stop the event from going to the editor as a regular keypress.
e.preventDefault();
e.stopPropagation();
} catch(ex) {
log.exception(ex);
}
}
// Hook up the keypress event listener.
var editor_pane = ko.views.manager.topView;
editor_pane.addEventListener('keypress', this.onkeypress_handler, true);
}).apply(extensions.smartbraces);
