86 lines
2.3 KiB
JavaScript
86 lines
2.3 KiB
JavaScript
/* Copyright (c) 2010-2011, Diaspora Inc. This file is
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* licensed under the Affero General Public License version 3 or later. See
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* the COPYRIGHT file.
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*/
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/* Modified version of https://gitorious.org/statusnet/mainline/blobs/master/plugins/DirectionDetector/jquery.DirectionDetector.js */
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(function() {
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var DirectionDetector = function() {
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var self = this;
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this.binds = [];
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this.cleaner = new RegExp("@[^ ]+|^RT[: ]{1}| RT | RT: |[♺♻:]+", "g");
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this.subscribe("widget/ready", function() {
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self.updateBinds();
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self.globalSubscribe("stream/scrolled", function() {
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self.updateBinds();
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});
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});
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this.isRTL = function(str) {
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if(typeof str !== "string" || str.length < 1) {
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return false;
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}
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var charCode = str.charCodeAt(0);
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if(charCode >= 1536 && charCode <= 1791) // Sarabic, Persian, ...
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return true;
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else if(charCode >= 65136 && charCode <= 65279) // Arabic present 1
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return true;
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else if(charCode >= 64336 && charCode <= 65023) // Arabic present 2
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return true;
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else if(charCode>=1424 && charCode<=1535) // Hebrew
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return true;
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else if(charCode>=64256 && charCode<=64335) // Hebrew present
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return true;
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else if(charCode>=1792 && charCode<=1871) // Syriac
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return true;
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else if(charCode>=1920 && charCode<=1983) // Thaana
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return true;
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else if(charCode>=1984 && charCode<=2047) // NKo
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return true;
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else if(charCode>=11568 && charCode<=11647) // Tifinagh
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return true;
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return false;
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};
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this.updateBinds = function() {
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$.each(self.binds, function(index, bind) {
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bind.unbind("keyup", self.updateDirection);
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});
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self.binds = [];
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$("textarea, input[type='text'], input[type='search']").each(self.bind);
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};
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this.bind = function() {
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self.binds.push(
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$(this).bind("keyup", self.updateDirection)
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);
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};
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this.updateDirection = function() {
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var textArea = $(this),
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cleaned = textArea.val().replace(self.cleaner, "").replace(/^[ ]+/, "");
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if(self.isRTL(cleaned)) {
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textArea.css("direction", "rtl");
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}
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else {
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textArea.css("direction", "ltr");
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}
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};
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};
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Diaspora.Widgets.DirectionDetector = DirectionDetector;
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})();
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