Added jquery.placeholder.js - MIT Licenced just like jQuery.

This library provides a fallback for IE6-9 and adds placeholder support in
input elements.

2 files changed, 177 insertions, 0 deletions

diff --git a/libs/jquery/MIT-LICENSE-placeholder.txt b/libs/jquery/MIT-LICENSE-placeholder.txt
new file mode 100644
index 0000000000..8d4d070394
--- /dev/null
+++ b/libs/jquery/MIT-LICENSE-placeholder.txt
@@ -0,0 +1,20 @@
+Copyright Mathias Bynens <http://mathiasbynens.be/>
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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diff --git a/libs/jquery/jquery.placeholder.js b/libs/jquery/jquery.placeholder.js
new file mode 100644
index 0000000000..0512ca5009
--- /dev/null
+++ b/libs/jquery/jquery.placeholder.js
@@ -0,0 +1,157 @@
+/*! http://mths.be/placeholder v2.0.7 by @mathias */
+;(function(window, document, $) {
+
+	var isInputSupported = 'placeholder' in document.createElement('input'),
+	    isTextareaSupported = 'placeholder' in document.createElement('textarea'),
+	    prototype = $.fn,
+	    valHooks = $.valHooks,
+	    hooks,
+	    placeholder;
+
+	if (isInputSupported && isTextareaSupported) {
+
+		placeholder = prototype.placeholder = function() {
+			return this;
+		};
+
+		placeholder.input = placeholder.textarea = true;
+
+	} else {
+
+		placeholder = prototype.placeholder = function() {
+			var $this = this;
+			$this
+				.filter((isInputSupported ? 'textarea' : ':input') + '[placeholder]')
+				.not('.placeholder')
+				.bind({
+					'focus.placeholder': clearPlaceholder,
+					'blur.placeholder': setPlaceholder
+				})
+				.data('placeholder-enabled', true)
+				.trigger('blur.placeholder');
+			return $this;
+		};
+
+		placeholder.input = isInputSupported;
+		placeholder.textarea = isTextareaSupported;
+
+		hooks = {
+			'get': function(element) {
+				var $element = $(element);
+				return $element.data('placeholder-enabled') && $element.hasClass('placeholder') ? '' : element.value;
+			},
+			'set': function(element, value) {
+				var $element = $(element);
+				if (!$element.data('placeholder-enabled')) {
+					return element.value = value;
+				}
+				if (value == '') {
+					element.value = value;
+					// Issue #56: Setting the placeholder causes problems if the element continues to have focus.
+					if (element != document.activeElement) {
+						// We can't use `triggerHandler` here because of dummy text/password inputs :(
+						setPlaceholder.call(element);
+					}
+				} else if ($element.hasClass('placeholder')) {
+					clearPlaceholder.call(element, true, value) || (element.value = value);
+				} else {
+					element.value = value;
+				}
+				// `set` can not return `undefined`; see http://jsapi.info/jquery/1.7.1/val#L2363
+				return $element;
+			}
+		};
+
+		isInputSupported || (valHooks.input = hooks);
+		isTextareaSupported || (valHooks.textarea = hooks);
+
+		$(function() {
+			// Look for forms
+			$(document).delegate('form', 'submit.placeholder', function() {
+				// Clear the placeholder values so they don't get submitted
+				var $inputs = $('.placeholder', this).each(clearPlaceholder);
+				setTimeout(function() {
+					$inputs.each(setPlaceholder);
+				}, 10);
+			});
+		});
+
+		// Clear placeholder values upon page reload
+		$(window).bind('beforeunload.placeholder', function() {
+			$('.placeholder').each(function() {
+				this.value = '';
+			});
+		});
+
+	}
+
+	function args(elem) {
+		// Return an object of element attributes
+		var newAttrs = {},
+		    rinlinejQuery = /^jQuery\d+$/;
+		$.each(elem.attributes, function(i, attr) {
+			if (attr.specified && !rinlinejQuery.test(attr.name)) {
+				newAttrs[attr.name] = attr.value;
+			}
+		});
+		return newAttrs;
+	}
+
+	function clearPlaceholder(event, value) {
+		var input = this,
+		    $input = $(input);
+		if (input.value == $input.attr('placeholder') && $input.hasClass('placeholder')) {
+			if ($input.data('placeholder-password')) {
+				$input = $input.hide().next().show().attr('id', $input.removeAttr('id').data('placeholder-id'));
+				// If `clearPlaceholder` was called from `$.valHooks.input.set`
+				if (event === true) {
+					return $input[0].value = value;
+				}
+				$input.focus();
+			} else {
+				input.value = '';
+				$input.removeClass('placeholder');
+				input == document.activeElement && input.select();
+			}
+		}
+	}
+
+	function setPlaceholder() {
+		var $replacement,
+		    input = this,
+		    $input = $(input),
+		    $origInput = $input,
+		    id = this.id;
+		if (input.value == '') {
+			if (input.type == 'password') {
+				if (!$input.data('placeholder-textinput')) {
+					try {
+						$replacement = $input.clone().attr({ 'type': 'text' });
+					} catch(e) {
+						$replacement = $('<input>').attr($.extend(args(this), { 'type': 'text' }));
+					}
+					$replacement
+						.removeAttr('name')
+						.data({
+							'placeholder-password': true,
+							'placeholder-id': id
+						})
+						.bind('focus.placeholder', clearPlaceholder);
+					$input
+						.data({
+							'placeholder-textinput': $replacement,
+							'placeholder-id': id
+						})
+						.before($replacement);
+				}
+				$input = $input.removeAttr('id').hide().prev().attr('id', id).show();
+				// Note: `$input[0] != input` now!
+			}
+			$input.addClass('placeholder');
+			$input[0].value = $input.attr('placeholder');
+		} else {
+			$input.removeClass('placeholder');
+		}
+	}
+
+}(this, document, jQuery));
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