var caretPositionAmp = []; function init() { if (navigator.appName == "Microsoft Internet Explorer") { obj = document.getElementsByTagName("TEXTAREA"); var b, a = 0; for (a = 0; a < obj.length; a++) { b = obj[a]; caretPositionAmp[a] = b.value.length; b.onmouseup = function () { b = document.activeElement; for (var c = 0; c < obj.length; c++) if (obj[c] == b) break; b.focus(); var e = document.selection.createRange(), h = b.createTextRange(), d = h.duplicate(); h.moveToBookmark(e.getBookmark()); d.setEndPoint("EndToStart", h); caretPositionAmp[c] = d.text.length }; b.onkeyup = function () { b = document.activeElement; for (var c = 0; c < obj.length; c++) if (obj[c] == b) break; b.focus(); var e = document.selection.createRange(), h = b.createTextRange(), d = h.duplicate(); h.moveToBookmark(e.getBookmark()); d.setEndPoint("EndToStart", h); caretPositionAmp[c] = d.text.length } } } } window.onload = init; jQuery.fn.extend({ getSelection: function () { var b = this.jquery ? this[0] : this, a, c, e, h = 0; b.onmousedown = function () { document.selection && typeof b.selectionStart != "number" ? document.selection.empty() : window.getSelection().removeAllRanges() }; if (document.selection) { var d = document.selection.createRange(), f = 0, g = 0, i = 0; a = document.getElementsByTagName("TEXTAREA"); for (c = 0; c < a.length; c++) if (a[c] == b) break; if (b.value.match(/\n/g) != null) h = b.value.match(/\n/g).length; if (d.text) { e = d.text; if (typeof b.selectionStart == "number") { a = b.selectionStart; c = b.selectionEnd; if (a == c) return { start: a, end: c, text: d.text, length: c - a} } else { a = b.createTextRange(); e = a.duplicate(); firstRe = a.text; a.moveToBookmark(d.getBookmark()); secondRe = a.text; e.setEndPoint("EndToStart", a); if (firstRe == secondRe && firstRe != d.text || e.text.length > firstRe.length) return { start: caretPositionAmp[c], end: caretPositionAmp[c], text: "", length: 0 }; a = e.text.length; c = e.text.length + d.text.length } if (h > 0) for (e = 0; e <= h; e++) { var k = b.value.indexOf("\n", g); if (k != -1 && k < a) { g = k + 1; f++; i = f } else if (k != -1 && k >= a && k <= c) if (k == a + 1) { f--; i--; g = k + 1 } else { g = k + 1; i++ } else e = h } if (d.text.indexOf("\n", 0) == 1) i += 2; a -= f; c -= i; return { start: a, end: c, text: d.text, length: c - a} } b.focus(); if (typeof b.selectionStart == "number") a = b.selectionStart; else { d = document.selection.createRange(); a = b.createTextRange(); e = a.duplicate(); a.moveToBookmark(d.getBookmark()); e.setEndPoint("EndToStart", a); a = e.text.length } if (h > 0) for (e = 0; e <= h; e++) { k = b.value.indexOf("\n", g); if (k != -1 && k < a) { g = k + 1; f++ } else e = h } a -= f; if (a == 0 && typeof b.selectionStart != "number") { a = caretPositionAmp[c]; c = caretPositionAmp[c] } return { start: a, end: a, text: d.text, length: 0} } else if (typeof b.selectionStart == "number") { a = b.selectionStart; c = b.selectionEnd; e = b.value.substring(b.selectionStart, b.selectionEnd); return { start: a, end: c, text: e, length: c - a} } else return { start: undefined, end: undefined, text: undefined, length: undefined} }, replaceSelection: function (b) { var a = this.jquery ? this[0] : this, c, e; e = 0; var h, d, f = 0, g = 0, i = a.scrollTop == undefined ? 0 : a.scrollTop; c = document.getElementsByTagName("TEXTAREA"); for (var k = 0; k < c.length; k++) if (c[k] == a) break; if (document.selection && typeof a.selectionStart != "number") { i = document.selection.createRange(); if (typeof a.selectionStart != "number") { var j; d = a.createTextRange(); h = d.duplicate(); c = d.text; d.moveToBookmark(i.getBookmark()); j = d.text; try { h.setEndPoint("EndToStart", d) } catch (m) { return this } if (c == j && c != i.text || h.text.length > c.length) return this } if (i.text) { part = i.text; if (a.value.match(/\n/g) != null) f = a.value.match(/\n/g).length; c = h.text.length; if (f > 0) for (j = 0; j <= f; j++) { var l = a.value.indexOf("\n", e); if (l != -1 && l < c) { e = l + 1; g++ } else j = f } i.text = b; caretPositionAmp[k] = h.text.length + b.length; d.move("character", caretPositionAmp[k]); document.selection.empty(); a.blur() } return this } else if (typeof a.selectionStart == "number" && a.selectionStart != a.selectionEnd) { c = a.selectionStart; e = a.selectionEnd; a.value = a.value.substr(0, c) + b + a.value.substr(e); e = c + b.length; a.setSelectionRange(e, e); a.scrollTop = i; return this } return this }, setSelection: function (b, a) { b = parseInt(b); a = parseInt(a); var c = this.jquery ? this[0] : this; c.focus(); if (typeof c.selectionStart != "number") { re = c.createTextRange(); if (re.text.length < a) a = re.text.length + 1 } if (a < b) return this; if (document.selection) { var e = 0, h = 0, d = 0, f = 0; if (typeof c.selectionStart != "number") { re.collapse(true); re.moveEnd("character", a); re.moveStart("character", b); re.select() } else { if (typeof c.selectionStart == "number") { if (c.value.match(/\n/g) != null) e = c.value.match(/\n/g).length; if (e > 0) for (var g = 0; g <= e; g++) { var i = c.value.indexOf("\n", d); if (i != -1 && i < b) { d = i + 1; h++; f = h } else if (i != -1 && i >= b && i <= a) if (i == b + 1) { h--; f--; d = i + 1 } else { d = i + 1; f++ } else g = e } b += h; a += f; c.selectionStart = b; c.selectionEnd = a } c.focus() } return this } else if (c.selectionStart) { c.focus(); c.selectionStart = b; c.selectionEnd = a; c.focus(); return this } }, insertAtCaretPos: function (b) { var a = this.jquery ? this[0] : this, c, e, h, d, f, g, i; c = e = 0; var k = a.scrollTop == undefined ? 0 : a.scrollTop; i = document.getElementsByTagName("TEXTAREA"); for (var j = 0; j < i.length; j++) if (i[j] == a) break; a.focus(); if (document.selection && typeof a.selectionStart != "number") { if (a.value.match(/\n/g) != null) c = a.value.match(/\n/g).length; i = parseInt(caretPositionAmp[j]); if (c > 0) for (var m = 0; m <= c; m++) { var l = a.value.indexOf("\n", h); if (l != -1 && l <= i) { h = l + 1; i -= 1; e++ } } } caretPositionAmp[j] = parseInt(caretPositionAmp[j]); a.onkeyup = function () { if (document.selection && typeof a.selectionStart != "number") { a.focus(); d = document.selection.createRange(); f = a.createTextRange(); g = f.duplicate(); f.moveToBookmark(d.getBookmark()); g.setEndPoint("EndToStart", f); caretPositionAmp[j] = g.text.length } }; a.onmouseup = function () { if (document.selection && typeof a.selectionStart != "number") { a.focus(); d = document.selection.createRange(); f = a.createTextRange(); g = f.duplicate(); f.moveToBookmark(d.getBookmark()); g.setEndPoint("EndToStart", f); caretPositionAmp[j] = g.text.length } }; if (document.selection && typeof a.selectionStart != "number") { d = document.selection.createRange(); if (d.text.length != 0) return this; f = a.createTextRange(); textLength = f.text.length; g = f.duplicate(); f.moveToBookmark(d.getBookmark()); g.setEndPoint("EndToStart", f); c = g.text.length; if (caretPositionAmp[j] > 0 && c == 0) { e = caretPositionAmp[j] - e; f.move("character", e); f.select(); d = document.selection.createRange(); caretPositionAmp[j] += b.length } else if (!(caretPositionAmp[j] >= 0) && textLength == 0) { d = document.selection.createRange(); caretPositionAmp[j] = b.length + textLength } else if (!(caretPositionAmp[j] >= 0) && c == 0) { f.move("character", textLength); f.select(); d = document.selection.createRange(); caretPositionAmp[j] = b.length + textLength } else if (!(caretPositionAmp[j] >= 0) && c > 0) { f.move("character", 0); document.selection.empty(); f.select(); d = document.selection.createRange(); caretPositionAmp[j] = c + b.length } else if (caretPositionAmp[j] >= 0 && caretPositionAmp[j] == textLength) { if (textLength != 0) { f.move("character", textLength); f.select() } else f.move("character", 0); d = document.selection.createRange(); caretPositionAmp[j] = b.length + textLength } else { if (caretPositionAmp[j] >= 0 && c != 0 && caretPositionAmp[j] >= c) { e = caretPositionAmp[j] - c; f.move("character", e) } else caretPositionAmp[j] >= 0 && c != 0 && caretPositionAmp[j] < c && f.move("character", 0); document.selection.empty(); f.select(); d = document.selection.createRange(); caretPositionAmp[j] += b.length } d.text = b; a.focus(); return this } else if (typeof a.selectionStart == "number" && a.selectionStart == a.selectionEnd) { h = a.selectionStart + b.length; c = a.selectionStart; e = a.selectionEnd; a.value = a.value.substr(0, c) + b + a.value.substr(e); a.setSelectionRange(h, h); a.scrollTop = k; return this } return this }, setCaretPos: function (b) { var a = this.jquery ? this[0] : this, c, e = 0, h = 0, d; d = document.getElementsByTagName("TEXTAREA"); for (var f = 0; f < d.length; f++) if (d[f] == a) break; a.focus(); if (parseInt(b) == 0) return this; if (parseInt(b) > 0) { b = parseInt(b) - 1; if (document.selection && typeof a.selectionStart == "number" && a.selectionStart == a.selectionEnd) { if (a.value.match(/\n/g) != null) e = a.value.match(/\n/g).length; if (e > 0) for (var g = 0; g <= e; g++) { d = a.value.indexOf("\n", c); if (d != -1 && d <= b) { c = d + 1; b = parseInt(b) + 1 } } } } else if (parseInt(b) < 0) { b = parseInt(b) + 1; if (document.selection && typeof a.selectionStart != "number") { b = a.value.length + parseInt(b); if (a.value.match(/\n/g) != null) e = a.value.match(/\n/g).length; if (e > 0) { for (g = 0; g <= e; g++) { d = a.value.indexOf("\n", c); if (d != -1 && d <= b) { c = d + 1; b = parseInt(b) - 1; h += 1 } } b = b + h - e } } else if (document.selection && typeof a.selectionStart == "number") { b = a.value.length + parseInt(b); if (a.value.match(/\n/g) != null) e = a.value.match(/\n/g).length; if (e > 0) { b = parseInt(b) - e; for (g = 0; g <= e; g++) { d = a.value.indexOf("\n", c); if (d != -1 && d <= b) { c = d + 1; b = parseInt(b) + 1; h += 1 } } } } else b = a.value.length + parseInt(b) } else return this; if (document.selection && typeof a.selectionStart != "number") { c = document.selection.createRange(); if (c.text != 0) return this; a = a.createTextRange(); a.collapse(true); a.moveEnd("character", b); a.moveStart("character", b); a.select(); caretPositionAmp[f] = b; return this } else if (typeof a.selectionStart == "number" && a.selectionStart == a.selectionEnd) { a.setSelectionRange(b, b); return this } return this }, countCharacters: function () { var b = this.jquery ? this[0] : this; if (b.value.match(/\r/g) != null) return b.value.length - b.value.match(/\r/g).length; return b.value.length }, setMaxLength: function (b, a) { this.each(function () { var c = this.jquery ? this[0] : this, e = c.type, h, d; if (parseInt(b) < 0) b = 1E8; if (e == "text") c.maxLength = b; if (e == "textarea" || e == "text") { c.onkeypress = function (f) { var g = c.value.match(/\r/g); d = b; if (g != null) d = parseInt(d) + g.length; f = f || event; g = f.keyCode; h = document.selection ? document.selection.createRange().text.length > 0 : c.selectionStart != c.selectionEnd; if (c.value.length >= d && (g > 47 || g == 32 || g == 0 || g == 13) && !f.ctrlKey && !f.altKey && !h) { c.value = c.value.substring(0, d); typeof a == "function" && a(); return false } }; c.onkeyup = function () { var f = c.value.match(/\r/g), g = 0, i = 0; d = b; if (f != null) { for (var k = 0; k <= f.length; k++) if (c.value.indexOf("\n", i) <= parseInt(b)) { g++; i = c.value.indexOf("\n", i) + 1 } d = parseInt(b) + g } if (c.value.length > d) { c.value = c.value.substring(0, d); typeof a == "function" && a(); return this } } } else return this }); return this } });