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+/*!
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+ * jQuery.selection - jQuery Plugin
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+ *
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+ * Copyright (c) 2010-2014 IWASAKI Koji (@madapaja).
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+ * http://blog.madapaja.net/
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+ * Under The MIT License
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+ *
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+ * Permission is hereby granted, free of charge, to any person obtaining
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+ * a copy of this software and associated documentation files (the
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+ * "Software"), to deal in the Software without restriction, including
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+ * without limitation the rights to use, copy, modify, merge, publish,
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+ * distribute, sublicense, and/or sell copies of the Software, and to
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+ * permit persons to whom the Software is furnished to do so, subject to
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+ * the following conditions:
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+ *
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+ * The above copyright notice and this permission notice shall be
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+ * included in all copies or substantial portions of the Software.
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+ *
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+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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+ */
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+(function($, win, doc) {
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+ /**
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+ * get caret status of the selection of the element
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+ *
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+ * @param {Element} element target DOM element
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+ * @return {Object} return
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+ * @return {String} return.text selected text
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+ * @return {Number} return.start start position of the selection
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+ * @return {Number} return.end end position of the selection
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+ */
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+ var _getCaretInfo = function(element){
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+ var res = {
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+ text: '',
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+ start: 0,
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+ end: 0
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+ };
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+
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+ if (!element.value) {
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+ /* no value or empty string */
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+ return res;
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+ }
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+
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+ try {
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+ if (win.getSelection) {
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+ /* except IE */
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+ res.start = element.selectionStart;
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+ res.end = element.selectionEnd;
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+ res.text = element.value.slice(res.start, res.end);
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+ } else if (doc.selection) {
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+ /* for IE */
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+ element.focus();
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+
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+ var range = doc.selection.createRange(),
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+ range2 = doc.body.createTextRange();
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+
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+ res.text = range.text;
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+
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+ try {
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+ range2.moveToElementText(element);
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+ range2.setEndPoint('StartToStart', range);
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+ } catch (e) {
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+ range2 = element.createTextRange();
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+ range2.setEndPoint('StartToStart', range);
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+ }
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+
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+ res.start = element.value.length - range2.text.length;
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+ res.end = res.start + range.text.length;
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+ }
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+ } catch (e) {
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+ /* give up */
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+ }
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+
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+ return res;
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+ };
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+
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+ /**
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+ * caret operation for the element
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+ * @type {Object}
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+ */
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+ var _CaretOperation = {
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+ /**
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+ * get caret position
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+ *
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+ * @param {Element} element target element
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+ * @return {Object} return
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+ * @return {Number} return.start start position for the selection
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+ * @return {Number} return.end end position for the selection
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+ */
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+ getPos: function(element) {
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+ var tmp = _getCaretInfo(element);
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+ return {start: tmp.start, end: tmp.end};
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+ },
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+
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+ /**
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+ * set caret position
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+ *
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+ * @param {Element} element target element
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+ * @param {Object} toRange caret position
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+ * @param {Number} toRange.start start position for the selection
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+ * @param {Number} toRange.end end position for the selection
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+ * @param {String} caret caret mode: any of the following: "keep" | "start" | "end"
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+ */
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+ setPos: function(element, toRange, caret) {
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+ caret = this._caretMode(caret);
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+
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+ if (caret === 'start') {
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+ toRange.end = toRange.start;
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+ } else if (caret === 'end') {
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+ toRange.start = toRange.end;
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+ }
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+
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+ element.focus();
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+ try {
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+ if (element.createTextRange) {
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+ var range = element.createTextRange();
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+
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+ if (win.navigator.userAgent.toLowerCase().indexOf("msie") >= 0) {
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+ toRange.start = element.value.substr(0, toRange.start).replace(/\r/g, '').length;
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+ toRange.end = element.value.substr(0, toRange.end).replace(/\r/g, '').length;
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+ }
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+
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+ range.collapse(true);
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+ range.moveStart('character', toRange.start);
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+ range.moveEnd('character', toRange.end - toRange.start);
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+
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+ range.select();
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+ } else if (element.setSelectionRange) {
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+ element.setSelectionRange(toRange.start, toRange.end);
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+ }
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+ } catch (e) {
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+ /* give up */
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+ }
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+ },
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+
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+ /**
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+ * get selected text
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+ *
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+ * @param {Element} element target element
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+ * @return {String} return selected text
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+ */
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+ getText: function(element) {
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+ return _getCaretInfo(element).text;
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+ },
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+
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+ /**
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+ * get caret mode
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+ *
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+ * @param {String} caret caret mode
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+ * @return {String} return any of the following: "keep" | "start" | "end"
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+ */
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+ _caretMode: function(caret) {
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+ caret = caret || "keep";
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+ if (caret === false) {
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+ caret = 'end';
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+ }
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+
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+ switch (caret) {
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+ case 'keep':
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+ case 'start':
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+ case 'end':
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+ break;
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+
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+ default:
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+ caret = 'keep';
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+ }
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+
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+ return caret;
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+ },
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+
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+ /**
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+ * replace selected text
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+ *
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+ * @param {Element} element target element
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+ * @param {String} text replacement text
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+ * @param {String} caret caret mode: any of the following: "keep" | "start" | "end"
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+ */
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+ replace: function(element, text, caret) {
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+ var tmp = _getCaretInfo(element),
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+ orig = element.value,
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+ pos = $(element).scrollTop(),
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+ range = {start: tmp.start, end: tmp.start + text.length};
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+
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+ element.value = orig.substr(0, tmp.start) + text + orig.substr(tmp.end);
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+
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+ $(element).scrollTop(pos);
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+ this.setPos(element, range, caret);
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+ },
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+
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+ /**
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+ * insert before the selected text
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+ *
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+ * @param {Element} element target element
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+ * @param {String} text insertion text
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+ * @param {String} caret caret mode: any of the following: "keep" | "start" | "end"
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+ */
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+ insertBefore: function(element, text, caret) {
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+ var tmp = _getCaretInfo(element),
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+ orig = element.value,
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+ pos = $(element).scrollTop(),
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+ range = {start: tmp.start + text.length, end: tmp.end + text.length};
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+
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+ element.value = orig.substr(0, tmp.start) + text + orig.substr(tmp.start);
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+
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+ $(element).scrollTop(pos);
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+ this.setPos(element, range, caret);
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+ },
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+
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+ /**
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+ * insert after the selected text
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+ *
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+ * @param {Element} element target element
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+ * @param {String} text insertion text
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+ * @param {String} caret caret mode: any of the following: "keep" | "start" | "end"
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+ */
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+ insertAfter: function(element, text, caret) {
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+ var tmp = _getCaretInfo(element),
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+ orig = element.value,
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+ pos = $(element).scrollTop(),
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+ range = {start: tmp.start, end: tmp.end};
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+
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+ element.value = orig.substr(0, tmp.end) + text + orig.substr(tmp.end);
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+
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+ $(element).scrollTop(pos);
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+ this.setPos(element, range, caret);
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+ }
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+ };
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+
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+ /* add jQuery.selection */
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+ $.extend({
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+ /**
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+ * get selected text on the window
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+ *
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+ * @param {String} mode selection mode: any of the following: "text" | "html"
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+ * @return {String} return
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+ */
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+ selection: function(mode) {
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+ var getText = ((mode || 'text').toLowerCase() === 'text');
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+
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+ try {
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+ if (win.getSelection) {
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+ if (getText) {
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+ // get text
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+ return win.getSelection().toString();
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+ } else {
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+ // get html
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+ var sel = win.getSelection(), range;
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+
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+ if (sel.getRangeAt) {
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+ range = sel.getRangeAt(0);
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+ } else {
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+ range = doc.createRange();
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+ range.setStart(sel.anchorNode, sel.anchorOffset);
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+ range.setEnd(sel.focusNode, sel.focusOffset);
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+ }
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+
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+ return $('<div></div>').append(range.cloneContents()).html();
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+ }
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+ } else if (doc.selection) {
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+ if (getText) {
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+ // get text
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+ return doc.selection.createRange().text;
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+ } else {
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+ // get html
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+ return doc.selection.createRange().htmlText;
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+ }
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+ }
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+ } catch (e) {
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+ /* give up */
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+ }
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+
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+ return '';
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+ }
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+ });
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+
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+ /* add selection */
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+ $.fn.extend({
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+ selection: function(mode, opts) {
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+ opts = opts || {};
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+
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+ switch (mode) {
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+ /**
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+ * selection('getPos')
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+ * get caret position
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+ *
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+ * @return {Object} return
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+ * @return {Number} return.start start position for the selection
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+ * @return {Number} return.end end position for the selection
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+ */
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+ case 'getPos':
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+ return _CaretOperation.getPos(this[0]);
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+
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+ /**
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+ * selection('setPos', opts)
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+ * set caret position
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+ *
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+ * @param {Number} opts.start start position for the selection
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+ * @param {Number} opts.end end position for the selection
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+ */
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+ case 'setPos':
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+ return this.each(function() {
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+ _CaretOperation.setPos(this, opts);
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+ });
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+
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+ /**
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+ * selection('replace', opts)
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+ * replace the selected text
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+ *
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+ * @param {String} opts.text replacement text
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+ * @param {String} opts.caret caret mode: any of the following: "keep" | "start" | "end"
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+ */
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+ case 'replace':
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+ return this.each(function() {
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+ _CaretOperation.replace(this, opts.text, opts.caret);
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+ });
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+
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+ /**
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+ * selection('insert', opts)
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+ * insert before/after the selected text
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+ *
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+ * @param {String} opts.text insertion text
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+ * @param {String} opts.caret caret mode: any of the following: "keep" | "start" | "end"
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+ * @param {String} opts.mode insertion mode: any of the following: "before" | "after"
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+ */
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+ case 'insert':
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+ return this.each(function() {
|
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|
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+ if (opts.mode === 'before') {
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+ _CaretOperation.insertBefore(this, opts.text, opts.caret);
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|
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+ } else {
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+ _CaretOperation.insertAfter(this, opts.text, opts.caret);
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+ }
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+ });
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+
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|
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+ /**
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+ * selection('get')
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|
|
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+ * get selected text
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+ *
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+ * @return {String} return
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+ */
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+ case 'get':
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+ /* falls through */
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+ default:
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+ return _CaretOperation.getText(this[0]);
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+ }
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+
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+ return this;
|
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|
|
|
+ }
|
|
|
|
|
+ });
|
|
|
|
|
+})(jQuery, window, window.document);
|