重寫printArea解決打印空白頁問題
$(function() {
var counter = 0;var modes = { iframe : "iframe", popup : "popup" };
var standards = { strict : "strict", loose : "loose", html5 : "html5" };
var defaults = { mode : modes.iframe,
standard : standards.html5,
popHt : 500,
popWd : 400,
popX : 200,
popY : 200,
popTitle : '',
popClose : false,
extraCss : '',
extraHead : '',
retainAttr : ["id","class","style"] };
var settings = {};//global settings
$.fn.printArea2 = function( options )
{
$.extend( settings, defaults, options );
counter++;
var idPrefix = "printArea_";
$( "[id^=" + idPrefix + "]" ).remove();
settings.id = idPrefix + counter;
var $printSource = $(this);
var PrintAreaWindow = PrintArea.getPrintWindow();
PrintArea.write( PrintAreaWindow.doc, $printSource );
setTimeout( function () { PrintArea.print( PrintAreaWindow ); }, 1000 );
};
var PrintArea = {
print : function( PAWindow ) {
var paWindow = PAWindow.win;
$(PAWindow.doc).ready(function(){
paWindow.focus();
paWindow.print();
if ( settings.mode == modes.popup && settings.popClose )
setTimeout(function() { paWindow.close(); }, 2000);
});
},
write : function ( PADocument, $ele ) {
PADocument.open();
PADocument.write( PrintArea.docType() + "<html>" + PrintArea.getHead() + PrintArea.getBody( $ele ) + "</html>" );
PADocument.close();
},
docType : function() {
if ( settings.mode == modes.iframe ) return "";
if ( settings.standard == standards.html5 ) return "<!DOCTYPE html>";
var transitional = settings.standard == standards.loose ? " Transitional" : "";
var dtd = settings.standard == standards.loose ? "loose" : "strict";
return '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01' + transitional + '//EN" "http://www.w3.org/TR/html4/' + dtd + '.dtd">';
},
getHead : function() {
var extraHead = "";
var links = "";
if ( settings.extraHead ) settings.extraHead.replace( /([^,]+)/g, function(m){ extraHead += m });
$(document).find("link")
.filter(function(){ // Requirement: <link> element MUST have rel="stylesheet" to be considered in print document
var relAttr = $(this).attr("rel");
return ($.type(relAttr) === 'undefined') == false && relAttr.toLowerCase() == 'stylesheet';
})
.filter(function(){ // Include if media is undefined, empty, print or all
var mediaAttr = $(this).attr("media");
return $.type(mediaAttr) === 'undefined' || mediaAttr == "" || mediaAttr.toLowerCase() == 'print' || mediaAttr.toLowerCase() == 'all'
})
.each(function(){
links += '<link type="text/css" rel="stylesheet" href="' + $(this).attr("href") + '" >';
});
if ( settings.extraCss ) settings.extraCss.replace( /([^,\s]+)/g, function(m){ links += '<link type="text/css" rel="stylesheet" href="' + m + '">' });
return "<head><title>" + settings.popTitle + "</title>" + extraHead + links + "</head>";
},
getBody : function ( elements ) {
var htm = "";
var attrs = settings.retainAttr;
elements.each(function() {
var ele = PrintArea.getFormData( $(this) );
var attributes = ""
for ( var x = 0; x < attrs.length; x++ )
{
var eleAttr = $(ele).attr( attrs[x] );
if ( eleAttr ) attributes += (attributes.length > 0 ? " ":"") + attrs[x] + "='" + eleAttr + "'";
}
htm += '<div ' + attributes + '>' + $(ele).html() + '</div>';
});
return "<body>" + htm + "</body>";
},
getFormData : function ( ele ) {
var copy = ele.clone();
var copiedInputs = $("input,select,textarea", copy);
$("input,select,textarea", ele).each(function( i ){
var typeInput = $(this).attr("type");
if ($.type(typeInput) === 'undefined') typeInput = $(this).is("select") ? "select" : $(this).is("textarea") ? "textarea" : "";
var copiedInput = copiedInputs.eq( i );
if ( typeInput == "radio" || typeInput == "checkbox" ) copiedInput.attr( "checked", $(this).is(":checked") );
else if ( typeInput == "text" || typeInput == "" ) copiedInput.attr( "value", $(this).val() );
else if ( typeInput == "select" )
$(this).find( "option" ).each( function( i ) {
if ( $(this).is(":selected") ) $("option", copiedInput).eq( i ).attr( "selected", true );
});
else if ( typeInput == "textarea" ) copiedInput.text( $(this).val() );
});
return copy;
},
getPrintWindow : function () {
switch ( settings.mode )
{
case modes.iframe :
var f = new PrintArea.Iframe();
return { win : f.contentWindow || f, doc : f.doc };
case modes.popup :
var p = new PrintArea.Popup();
return { win : p, doc : p.doc };
}
},
Iframe : function () {
var frameId = settings.id;
var iframeStyle = 'border:0;position:absolute;width:0px;height:0px;right:0px;top:0px;';
var iframe;
try
{
iframe = document.createElement('iframe');
document.body.appendChild(iframe);
$(iframe).attr({ style: iframeStyle, id: frameId, src: "#" + new Date().getTime() });
iframe.doc = null;
iframe.doc = iframe.contentDocument ? iframe.contentDocument : ( iframe.contentWindow ? iframe.contentWindow.document : iframe.document);
}
catch( e ) { throw e + ". iframes may not be supported in this browser."; }
if ( iframe.doc == null ) throw "Cannot find document.";
return iframe;
},
Popup : function () {
var windowAttr = "location=yes,statusbar=no,directories=no,menubar=no,titlebar=no,toolbar=no,dependent=no";
windowAttr += ",width=" + settings.popWd + ",height=" + settings.popHt;
windowAttr += ",resizable=yes,screenX=" + settings.popX + ",screenY=" + settings.popY + ",personalbar=no,scrollbars=yes";
var newWin = window.open( "", "_blank", windowAttr );
newWin.doc = newWin.document;
return newWin;
}
};
})(jQuery);