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170 lines
6.0 KiB
JavaScript
170 lines
6.0 KiB
JavaScript
/**
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* Version 2.1
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* -Contributors: "mindinquiring" : filter to exclude any stylesheet other than print.
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* Tested ONLY in IE 8 and FF 3.6. No official support for other browsers, but will
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* TRY to accomodate challenges in other browsers.
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* Example:
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* Print Button: <div id="print_button">Print</div>
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* Print Area : <div class="PrintArea"> ... html ... </div>
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* Javascript : <script>
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* $("div#print_button").click(function(){
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* $("div.PrintArea").printArea( [OPTIONS] );
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* });
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* </script>
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* options are passed as json (json example: {mode: "popup", popClose: false})
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*
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* {OPTIONS} | [type] | (default), values | Explanation
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* --------- | --------- | ---------------------- | -----------
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* @mode | [string] | ("iframe"),"popup" | printable window is either iframe or browser popup
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* @popHt | [number] | (500) | popup window height
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* @popWd | [number] | (400) | popup window width
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* @popX | [number] | (500) | popup window screen X position
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* @popY | [number] | (500) | popup window screen Y position
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* @popTitle | [string] | ('') | popup window title element
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* @popClose | [boolean] | (false),true | popup window close after printing
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* @strict | [boolean] | (undefined),true,false | strict or loose(Transitional) html 4.01 document standard or undefined to not include at all (only for popup option)
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*/
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(function ($) {
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var counter = 0;
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var modes = { iframe: "iframe", popup: "popup" };
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var defaults = { mode: modes.iframe,
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popHt: 500,
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popWd: 400,
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popX: 200,
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popY: 200,
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popTitle: '',
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popClose: false
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};
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var settings = {}; //global settings
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$.fn.printArea = function (options) {
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$.extend(settings, defaults, options);
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counter++;
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var idPrefix = "printArea_";
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$("[id^=" + idPrefix + "]").remove();
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var ele = getFormData($(this));
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settings.id = idPrefix + counter;
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var writeDoc;
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var printWindow;
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switch (settings.mode) {
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case modes.iframe:
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var f = new Iframe();
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writeDoc = f.doc;
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printWindow = f.contentWindow || f;
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break;
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case modes.popup:
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printWindow = new Popup();
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if (printWindow==null || printWindow==undefined)return;
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writeDoc = printWindow.doc;
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}
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writeDoc.open();
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writeDoc.write(docType() + "<html>" + getHead() + getBody(ele) + "</html>");
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writeDoc.close();
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printWindow.focus();
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if (settings.mode == modes.iframe) printWindow.print();
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if (settings.mode == modes.popup && settings.popClose)
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printWindow.close();
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}
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function docType() {
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if (settings.mode == modes.iframe || !settings.strict) return "";
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var standard = settings.strict == false ? " Trasitional" : "";
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var dtd = settings.strict == false ? "loose" : "strict";
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return '<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01' + standard + '//EN" "http://www.w3.org/TR/html4/' + dtd + '.dtd">';
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}
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function getHead() {
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var head = "<head><title>" + settings.popTitle + "</title>";
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$(document).find("link")
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.filter(function () {
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return $(this).attr("rel").toLowerCase() == "stylesheet";
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})
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.filter(function () { // this filter contributed by "mindinquiring"
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var media = $(this).attr("media");
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return (media.toLowerCase() == "" || media.toLowerCase() == "print")
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})
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.each(function () {
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head += '<link type="text/css" rel="stylesheet" href="' + $(this).attr("href") + '" >';
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});
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head += "</head>";
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return head;
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}
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function getBody(printElement) {
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return '<body><div class="' + $(printElement).attr("class") + '">' + $(printElement).html() + '</div></body>';
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}
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function getFormData(ele) {
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$("input,select,textarea", ele).each(function () {
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// In cases where radio, checkboxes and select elements are selected and deselected, and the print
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// button is pressed between select/deselect, the print screen shows incorrectly selected elements.
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// To ensure that the correct inputs are selected, when eventually printed, we must inspect each dom element
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var type = $(this).attr("type");
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if (type == "radio" || type == "checkbox") {
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if ($(this).is(":not(:checked)")) this.removeAttribute("checked");
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else this.setAttribute("checked", true);
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}
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else if (type == "text")
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this.setAttribute("value", $(this).val());
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else if (type == "select-multiple" || type == "select-one")
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$(this).find("option").each(function () {
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if ($(this).is(":not(:selected)")) this.removeAttribute("selected");
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else this.setAttribute("selected", true);
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});
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else if (type == "textarea") {
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var v = $(this).attr("value");
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if ($.browser.mozilla) {
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if (this.firstChild) this.firstChild.textContent = v;
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else this.textContent = v;
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}
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else this.innerHTML = v;
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}
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});
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return ele;
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}
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function Iframe() {
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var frameId = settings.id;
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var iframeStyle = 'border:0;position:absolute;width:0px;height:0px;left:0px;top:0px;';
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var iframe;
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try {
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iframe = document.createElement('iframe');
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document.body.appendChild(iframe);
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$(iframe).attr({ style: iframeStyle, id: frameId, src: "" });
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iframe.doc = null;
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iframe.doc = iframe.contentDocument ? iframe.contentDocument : (iframe.contentWindow ? iframe.contentWindow.document : iframe.document);
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}
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catch (e) { throw e + ". iframes may not be supported in this browser."; }
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if (iframe.doc == null) throw "Cannot find document.";
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return iframe;
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}
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function Popup() {
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var windowAttr = "location=yes,statusbar=no,directories=no,menubar=yes,titlebar=no,toolbar=no,dependent=no";
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windowAttr += ",width=" + settings.popWd + ",height=" + settings.popHt;
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windowAttr += ",resizable=yes,screenX=" + settings.popX + ",screenY=" + settings.popY + ",personalbar=no,scrollbars=yes";
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var newWin = null;
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try {
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newWin = window.open("", "_blank", windowAttr);
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} catch (e) {
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return;
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}
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if (newWin == null) { return; }
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newWin.doc = newWin.document;
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return newWin;
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}
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})(jQuery); |