source: trunk/template-common/lib/plugins/jquery.growfield.packed.js @ 2606

(function($){$.fn.growfield=function(options){this.each(function(){this._growField=true;var txt=$(this);if(this.tagName.toLowerCase()!='textarea')return false;if(!options)options={};var th=this;this.gf={auto:(typeof(options.auto)!='undefined'?options.auto:true),animate:(typeof(options.animate)!='undefined'?options.animate:true),hOffset:(typeof(options.offset)!='undefined'?options.offset:0),before:(options.before||null),after:(options.after||null),min:(options.min||false),max:(options.max||false),restore:(options.restore||false),initialH:0,busy:false,keysEnabled:false,dummy:null,queue:0,speed:300,ms:15,timeout:false,opera9:false,impossible:false};this._growInit=function(){if(this.gf.before)this._growCallbackBefore=this.gf.before;if(this.gf.after)this._growCallbackAfter=this.gf.after;this.gf.initialH=txt.get(0).offsetHeight;if(typeof(txt.attr('autogrow'))!='undefined')this.gf.auto=parseInt(txt.attr('autogrow'));if(typeof(txt.attr('animate'))!='undefined')this.gf.animate=parseInt(txt.attr('animate'));if(typeof(txt.attr('min'))!='undefined')this.gf.min=parseInt(txt.attr('min'));if(typeof(txt.attr('max'))!='undefined')this.gf.max=parseInt(txt.attr('max'));if(typeof(txt.attr('restore'))!='undefined')this.gf.restore=parseInt(txt.attr('restore'));if(typeof(txt.attr('speed'))!='undefined')this.gf.speed=parseInt(txt.attr('speed'));if(!this.gf.min)this.gf.min=parseInt(txt.css('min-height'));if(!this.gf.min)this.gf.min=this.gf.initialH;if(!this.gf.max)this.gf.max=parseInt(txt.css('max-height'));this.gf.opera9=($.browser.opera&&$.browser.version<9.5);if(this.gf.restore){this.gf.restore=false;this._toggleRestore(true)}if(this.gf.auto){if(this.gf.initialH==0){txt.bind('keyup.growinit',this._afterShowInit)}else{this.gf.auto=false;this._toggleAuto(true)}}else this._toggleKeys(true);return true};this._afterShowInit=function(){this.gf.initialH=txt.get(0).offsetHeight;if(!this.gf.initialH)return true;if(!this.gf.min)this.gf.min=this.gf.initialH;txt.unbind('.growinit');this.gf.auto=false;this._toggleAuto(true);txt.focus();return true};this._toggleKeys=function(on){if(on){if(this.gf.keysEnabled)return false;txt.bind(($.browser.msie?'keyup':'keydown')+'.autogrow',function(event){if(!event.ctrlKey||$.inArray(event.keyCode,[38,40])==-1)return true;txt[event.keyCode==38?'decrease':'increase'](false,event);if($.browser.opera)txt.focus();if($.browser.msie||$.browser.opera)return false;return true});this.gf.keysEnabled=true}else{if(!this.gf.keysEnabled)return false;txt.unbind(($.browser.msie?'keyup':'keydown')+'.autogrow');this.gf.keysEnabled=false}};this._toggleAuto=function(on){if($.browser.opera||on){txt.css('overflow','hidden');if($.browser.opera&&txt.attr('style')&&txt.attr('style').indexOf('border')==-1)txt.css('border','1px solid #ccc')}if(on){if(this.gf.auto)return false;this._toggleKeys(false);this._createDummy();if(this.gf.impossible){this._growField=false;return false}txt.css('overflow','hidden');txt.bind('keyup.autogrow',function(event){if(!txt.val())this._changeSize(this.gf.min,event);else return this._changeSize(this._textHeight(),event)});if(txt.val())txt.keyup();$(window).bind('resize.autogrow',function(event){th.gf.dummy.width(txt.width())});this.gf.auto=true}else{if(!this.gf.auto)return false;this.gf.dummy.remove();this.gf.dummy=null;txt.unbind('keyup.autogrow');$(window).unbind('resize.autogrow');txt.css('overflow','auto');this.gf.auto=false;this._toggleKeys(true)}return true};this._toggleRestore=function(on){if(on){if(this.gf.restore)return false;this.gf.restore=true;txt.bind('focus.autogrow',function(event,noChange){if(!this.gf.auto||noChange||!txt.val())return true;else return this._changeSize(this._textHeight(),event)});txt.bind('blur.autogrow',function(event){return this.gf.auto?this._changeSize(this.gf.min,event):true})}else{if(!this.gf.restore)return false;this.gf.restore=false;txt.unbind('focus.autogrow').unbind('blur.autogrow');txt.keyup()}};this._changeSize=function(to,event){if(this.gf.busy)return true;if(!event)event={};this._growBefore(event);var ovr=txt.css('overflow');if(this.gf.max>0&&to>=this.gf.max){to=this.gf.max;if(ovr=='hidden'){txt.css('overflow','auto');if(event.type=='keyup')txt.focus();if(event.type=='focus'&&this.gf.animate&&this.gf.auto)txt.trigger('focus',true)}}else if(ovr=='auto'&&this.gf.auto){txt.css('overflow','hidden');if(event.type=='keyup')txt.focus()}if(this.gf.min>0&&to<=this.gf.min)to=this.gf.min;if(to==txt.get(0).offsetHeight){this.gf.busy=false;return true}return this._animate(txt.get(0).offsetHeight,to,event,ovr)};this._animate=function(from,to,event,ovr){if(!this.gf.animate||(ovr=='auto'&&this.gf.auto)||event.type=='init'){txt.height(to);return this._growAfter(event)}this.gf.queue=Math.floor((this.gf.speed/this.gf.ms)*(to<from?-1:1));this._timeout(from,to);return true};this._timeout=function(from,to){if(th.gf.queue==0)return th._growAfter();th.gf.queue+=(th.gf.queue>0?-1:1);if(Math.abs(to-from)<3){txt.height(to);return th._growAfter()}from=th.gf.queue==0?to:from+Math.ceil((to-from)/2);txt.height(from);th.gf.timeout=window.setTimeout(function(){th._timeout(from,to)},th.gf.ms)};this._textHeight=function(){var val=txt.val();if($.browser.safari&&val.substr(-2)=="\n\n")val=val.substring(0,val.length-2)+"\n11";if($.browser.safari)this.gf.dummy.val('');this.gf.dummy.val(val);if(this.gf.opera9)this.gf.dummy.css('overflow','hidden').css('overflow','auto');var d=this.gf.dummy.get(0);if(this.gf.opera9)return d.clientHeight+this.gf.hOffset;if((d.scrollHeight+($.browser.safari?1:0))>d.clientHeight){return d.scrollHeight+(d.offsetHeight-d.clientHeight)+this.gf.hOffset+($.browser.safari?this.gf.hOffset:0)}else{if(!txt.val())return this.gf.min;else return d.offsetHeight+this.gf.hOffset}};this._createDummy=function(){if(this.gf.dummy){this.gf.dummy.remove();this.gf.dummy=false}var i=true;var tryPadding=false;while(i){this.gf.dummy=txt.clone().css({position:'absolute',left:-9999,top:0,visibility:'hidden',width:txt.get(0).offsetWidth}).attr('tabindex',-9999);if(this.gf.opera9){this.gf.dummy.css({overflow:'auto',height:'auto'});var padding=txt.css('padding');if((padding&&padding<4)||tryPadding)this.gf.dummy.css({padding:'4px'})}this.gf.dummy.get(0)._growField=false;txt.after(this.gf.dummy);this.gf.dummy.val('').height(10);this.gf.dummy.val("11");if(this.gf.opera9)this.gf.dummy.css('overflow','hidden').css('overflow','auto');var s1=this.gf.dummy.get(0).scrollHeight;this.gf.dummy.val("11\n11");if(this.gf.opera9)this.gf.dummy.css('overflow','hidden').css('overflow','auto');var s2=this.gf.dummy.get(0).scrollHeight;if(!this.gf.hOffset){this.gf.hOffset=s2-s1;if($.browser.opera&&!this.gf.opera9)this.gf.hOffset+=this.gf.dummy.get(0).offsetHeight-this.gf.dummy.height()}if(this.gf.opera9&&this.gf.hOffset==0){if(tryPadding)i=false;else{tryPadding=true;this.gf.dummy.remove();continue}}else i=false}};this._growBefore=function(event){this.gf.busy=true;this._growCallbackBefore(event)};this._growAfter=function(event){if(this.gf.timeout){window.clearTimeout(this.gf.timeout);this.gf.timeout=false}this.gf.busy=false;this._growCallbackAfter(event);return true};this._growCallbackBefore=function(){};this._growCallbackAfter=function(){};$(function(){th._growInit()})})};$.fn.increase=function(step,event){this.each(function(){if(!this._growField||this.gf.auto)return true;this._changeSize(this.offsetHeight+(step?parseInt(step):this.gf.hOffset),event)})};$.fn.decrease=function(step,event){this.each(function(){if(!this._growField||this.gf.auto)return true;this._changeSize(this.offsetHeight-(step?parseInt(step):this.gf.hOffset),event)})};$.fn.growToggleAuto=function(bool){if(bool&&bool!=true&&bool!=false&&bool.toLowerCase()!='on'&&bool.toLowerCase()!='off')delete(bool);if(bool&&typeof(bool)=='string')bool=bool.toLowerCase()=='on'?true:false;this.each(function(){if(!this._growField)return true;this._toggleAuto(bool)})};$.fn.growToggleAnimation=function(bool){if(bool&&bool!=true&&bool!=false&&bool.toLowerCase()!='on'&&bool.toLowerCase()!='off')delete(bool);if(bool&&typeof(bool)=='string')bool=bool.toLowerCase()=='on'?true:false;this.each(function(){if(!this._growField)return true;this.gf.animate=bool})};$.fn.growTo=function(h){this.each(function(){if(!this._growField)return true;this._changeSize(h)})};$.fn.growSetMin=function(h){this.each(function(){if(!this._growField)return true;h=parseInt(h);if(h<10&&this.gf.initialH)h=this.gf.initialH;if(h<10)return true;this.gf.min=parseInt(h);if(this.offsetHeight<this.gf.min)$(this).growTo(this.gf.min)})};$.fn.growSetMax=function(h){this.each(function(){if(!this._growField)return true;this.gf.max=parseInt(h);if(this.offsetHeight>this.gf.max)$(this).growTo(this.gf.max)})};$.fn.growToggleRestore=function(bool){if(bool&&bool!=true&&bool!=false&&bool.toLowerCase()!='on'&&bool.toLowerCase()!='off')delete(bool);if(bool&&typeof(bool)=='string')bool=bool.toLowerCase()=='on'?true:false;this.each(function(){if(!this._growField)return true;this._toggleRestore(bool)})};$.fn.growRenewDummy=function(){this.each(function(){if(!this._growField)return true;this._createDummy()})}})(jQuery);