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authortommy tomson <thomas.bierey@gmx.de>2012-04-15 04:39:33 +0200
committertommy tomson <thomas.bierey@gmx.de>2012-04-15 04:39:33 +0200
commitdddf3307af24de71a8b6e52a984ba2f2e310c3b7 (patch)
treeb45087fc3bd2c69c7fd872106365d70aa4d0ce84 /view/theme/diabook/js/jquery.autogrow.textarea.js
parent170c15ceb9cac013146b7f9687b83a376a3a21ff (diff)
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diabook-themes: added js for auto-growing comment-textareas
Diffstat (limited to 'view/theme/diabook/js/jquery.autogrow.textarea.js')
-rw-r--r--view/theme/diabook/js/jquery.autogrow.textarea.js46
1 files changed, 46 insertions, 0 deletions
diff --git a/view/theme/diabook/js/jquery.autogrow.textarea.js b/view/theme/diabook/js/jquery.autogrow.textarea.js
new file mode 100644
index 000000000..806e34f51
--- /dev/null
+++ b/view/theme/diabook/js/jquery.autogrow.textarea.js
@@ -0,0 +1,46 @@
+(function($) {
+
+ /*
+ * Auto-growing textareas; technique ripped from Facebook
+ */
+ $.fn.autogrow = function(options) {
+
+ this.filter('textarea').each(function() {
+
+ var $this = $(this),
+ minHeight = $this.height(),
+ lineHeight = $this.css('lineHeight');
+
+ var shadow = $('<div></div>').css({
+ position: 'absolute',
+ top: -10000,
+ left: -10000,
+ width: $(this).width(),
+ fontSize: $this.css('fontSize'),
+ fontFamily: $this.css('fontFamily'),
+ lineHeight: $this.css('lineHeight'),
+ resize: 'none'
+ }).appendTo(document.body);
+
+ var update = function() {
+
+ var val = this.value.replace(/</g, '&lt;')
+ .replace(/>/g, '&gt;')
+ .replace(/&/g, '&amp;')
+ .replace(/\n/g, '<br/>');
+
+ shadow.html(val);
+ $(this).css('height', Math.max(shadow.height() + 20, minHeight));
+ }
+
+ $(this).change(update).keyup(update).keydown(update);
+
+ update.apply(this);
+
+ });
+
+ return this;
+
+ }
+
+})(jQuery); \ No newline at end of file