https://www.fundacionlaboral.org/bower_components/jQuery.print/jQuery.print.js

1/* @license 
2 * jQuery.print, version 1.5.0
3 *  (c) Sathvik Ponangi, Doers' Guild
4 * Licence: CC-By (http://creativecommons.org/licenses/by/3.0/)
5 *--------------------------------------------------------------------------*/
6(function ($) {
7    "use strict";
8    // A nice closure for our definitions
9    function getjQueryObject(string) {
10        // Make string a vaild jQuery thing
11        var jqObj = $("");
12        try {
13            jqObj = $(string)
14                .clone();
15        } catch (e) {
16            jqObj = $("<span />")
17                .html(string);
18        }
19        return jqObj;
20    }
21
22    function printFrame(frameWindow, content, options) {
23        // Print the selected window/iframe
24        var def = $.Deferred();
25        try {
26            frameWindow = frameWindow.contentWindow || frameWindow.contentDocument || frameWindow;
27            var wdoc = frameWindow.document || frameWindow.contentDocument || frameWindow;
28            if(options.doctype) {
29                wdoc.write(options.doctype);
30            }
31            wdoc.write(content);
32            wdoc.close();
33            var printed = false;
34            function callPrint() {
35                if(printed) {
36                    return;
37                }
38                // Fix for IE : Allow it to render the iframe
39                frameWindow.focus();
40                try {
41                    // Fix for IE11 - printng the whole page instead of the iframe content
42                    if (!frameWindow.document.execCommand('print', false, null)) {
43                        // document.execCommand returns false if it failed -http://stackoverflow.com/a/21336448/937891
44                        frameWindow.print();
45                    }
46                } catch (e) {
47                    frameWindow.print();
48                }
49                frameWindow.close();
50                printed = true;
51                def.resolve();
52            }
53            // Print once the frame window loads - seems to work for the new-window option but unreliable for the iframe
54            $(frameWindow).on("load", callPrint);
55            // Fallback to printing directly if the frame doesn't fire the load event for whatever reason
56            setTimeout(callPrint, options.timeout);
57        } catch (err) {
58            def.reject(err);
59        }
60        return def;
61    }
62
63    function printContentInIFrame(content, options) {
64        var $iframe = $(options.iframe + "");
65        var iframeCount = $iframe.length;
66        if (iframeCount === 0) {
67            // Create a new iFrame if none is given
68            $iframe = $('<iframe height="0" width="0" border="0" wmode="Opaque"/>')
69                .prependTo('body')
70                .css({
71                    "position": "absolute",
72                    "top": -999,
73                    "left": -999
74                });
75        }
76        var frameWindow = $iframe.get(0);
77        return printFrame(frameWindow, content, options)
78            .done(function () {
79                // Success
80                setTimeout(function () {
81                    // Wait for IE
82                    if (iframeCount === 0) {
83                        // Destroy the iframe if created here
84                        $iframe.remove();
85                    }
86                }, 100);
87            })
88            .fail(function (err) {
89                // Use the pop-up method if iframe fails for some reason
90                console.error("Failed to print from iframe", err);
91                printContentInNewWindow(content, options);
92            })
93            .always(function () {
94                try {
95                    options.deferred.resolve();
96                } catch (err) {
97                    console.warn('Error notifying deferred', err);
98                }
99            });
100    }
101
102    function printContentInNewWindow(content, options) {
103        // Open a new window and print selected content
104        var frameWindow = window.open();
105        return printFrame(frameWindow, content, options)
106            .always(function () {
107                try {
108                    options.deferred.resolve();
109                } catch (err) {
110                    console.warn('Error notifying deferred', err);
111                }
112            });
113    }
114
115    function isNode(o) {
116        /* http://stackoverflow.com/a/384380/937891 */
117        return !!(typeof Node === "object" ? o instanceof Node : o && typeof o === "object" && typeof o.nodeType === "number" && typeof o.nodeName === "string");
118    }
119    $.print = $.fn.print = function () {
120        // Print a given set of elements
121        var options, $this, self = this;
122        // console.log("Printing", this, arguments);
123        if (self instanceof $) {
124            // Get the node if it is a jQuery object
125            self = self.get(0);
126        }
127        if (isNode(self)) {
128            // If `this` is a HTML element, i.e. for
129            // $(selector).print()
130            $this = $(self);
131            if (arguments.length > 0) {
132                options = arguments[0];
133            }
134        } else {
135            if (arguments.length > 0) {
136                // $.print(selector,options)
137                $this = $(arguments[0]);
138                if (isNode($this[0])) {
139                    if (arguments.length > 1) {
140                        options = arguments[1];
141                    }
142                } else {
143                    // $.print(options)
144                    options = arguments[0];
145                    $this = $("html");
146                }
147            } else {
148                // $.print()
149                $this = $("html");
150            }
151        }
152        // Default options
153        var defaults = {
154            globalStyles: true,
155            mediaPrint: false,
156            stylesheet: null,
157            noPrintSelector: ".no-print",
158            iframe: true,
159            append: null,
160            prepend: null,
161            manuallyCopyFormValues: true,
162            deferred: $.Deferred(),
163            timeout: 750,
164            title: null,
165            doctype: '<!doctype html>'
166        };
167        // Merge with user-options
168        options = $.extend({}, defaults, (options || {}));
169        var $styles = $("");
170        if (options.globalStyles) {
171            // Apply the stlyes from the current sheet to the printed page
172            $styles = $("style, link, meta, base, title");
173        } else if (options.mediaPrint) {
174            // Apply the media-print stylesheet
175            $styles = $("link[media=print]");
176        }
177        if (options.stylesheet) {
178            // Add a custom stylesheet if given
179            $styles = $.merge($styles, $('<link rel="stylesheet" href="' + options.stylesheet + '">'));
180        }
181        // Create a copy of the element to print
182        var copy = $this.clone();
183        // Wrap it in a span to get the HTML markup string
184        copy = $("<span/>")
185            .append(copy);
186        // Remove unwanted elements
187        copy.find(options.noPrintSelector)
188            .remove();
189        // Add in the styles
190        copy.append($styles.clone());
191        // Update title
192        if (options.title) {
193            var title = $("title", copy);
194            if (title.length === 0) {
195                title = $("<title />");
196                copy.append(title);                
197            }

198            title.text(options.title);            
199        }
200        // Appedned content
201        copy.append(getjQueryObject(options.append));
202        // Prepended content
203        copy.prepend(getjQueryObject(options.prepend));
204        if (options.manuallyCopyFormValues) {
205            // Manually copy form values into the HTML for printing user-modified input fields
206            // http://stackoverflow.com/a/26707753
207            copy.find("input")
208                .each(function () {
209                    var $field = $(this);
210                    if ($field.is("[type='radio']") || $field.is("[type='checkbox']")) {
211                        if ($field.prop("checked")) {
212                            $field.attr("checked", "checked");
213                        }
214                    } else {
215                        $field.attr("value", $field.val());
216                    }
217                });
218            copy.find("select").each(function () {
219                var $field = $(this);
220                $field.find(":selected").attr("selected", "selected");
221            });
222            copy.find("textarea").each(function () {
223                // Fix for https://github.com/DoersGuild/jQuery.print/issues/18#issuecomment-96451589
224                var $field = $(this);
225                $field.text($field.val());
226            });
227        }
228        // Get the HTML markup string
229        var content = copy.html();
230        // Notify with generated markup & cloned elements - useful for logging, etc
231        try {
232            options.deferred.notify('generated_markup', content, copy);
233        } catch (err) {
234            console.warn('Error notifying deferred', err);
235        }
236        // Destroy the copy
237        copy.remove();
238        if (options.iframe) {
239            // Use an iframe for printing
240            try {
241                printContentInIFrame(content, options);
242            } catch (e) {
243                // Use the pop-up method if iframe fails for some reason
244                console.error("Failed to print from iframe", e.stack, e.message);
245                printContentInNewWindow(content, options);
246            }
247        } else {
248            // Use a new window for printing
249            printContentInNewWindow(content, options);
250        }
251        return this;
252    };
253})(jQuery);