TextAreaUtils.js
a265e10c42d8master

TextAreaUtils.js
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			/**
			* @requires javelin-install
			* @provides phabricator-textareautils
			* @javelin
			*/

			JX.install('TextAreaUtils', {
			statics : {
			getSelectionRange : function(area) {
			var v = area.value;

			// NOTE: This works well in Safari, Firefox and Chrome. We'll probably get
			// less-good behavior on IE.

			var s = v.length;
			var e = v.length;

			if ('selectionStart' in area) {
			s = area.selectionStart;
			e = area.selectionEnd;
			}

			return {start: s, end: e};
			},

			getSelectionText : function(area) {
			var v = area.value;
			var r = JX.TextAreaUtils.getSelectionRange(area);
			return v.substring(r.start, r.end);
			},

			setSelectionRange : function(area, start, end) {
			if ('setSelectionRange' in area) {
			area.focus();
			area.setSelectionRange(start, end);
			}
			},

			setSelectionText : function(area, text) {
			var v = area.value;
			var r = JX.TextAreaUtils.getSelectionRange(area);

			v = v.substring(0, r.start) + text + v.substring(r.end, v.length);
			area.value = v;

			JX.TextAreaUtils.setSelectionRange(area, r.start, r.start + text.length);
			}
			}
			});