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// This file is part of Moodle - http://moodle.org///// Moodle is free software: you can redistribute it and/or modify// it under the terms of the GNU General Public License as published by// the Free Software Foundation, either version 3 of the License, or// (at your option) any later version.//// Moodle is distributed in the hope that it will be useful,// but WITHOUT ANY WARRANTY; without even the implied warranty of// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the// GNU General Public License for more details.//// You should have received a copy of the GNU General Public License// along with Moodle. If not, see <http://www.gnu.org/licenses/>./* eslint-disable no-unused-vars *//*** Provides an in browser PDF editor.** @module moodle-assignfeedback_editpdf-editor*//*** EDITOR* This is an in browser PDF editor.** @namespace M.assignfeedback_editpdf* @class editor* @constructor* @extends Y.Base*/var EDITOR = function() {EDITOR.superclass.constructor.apply(this, arguments);};EDITOR.prototype = {/*** Store old coordinates of the annotations before rotation happens.*/oldannotationcoordinates: null,/*** The dialogue used for all action menu displays.** @property type* @type M.core.dialogue* @protected*/dialogue: null,/*** The panel used for all action menu displays.** @property type* @type Y.Node* @protected*/panel: null,/*** The number of pages in the pdf.** @property pagecount* @type Number* @protected*/pagecount: 0,/*** The active page in the editor.** @property currentpage* @type Number* @protected*/currentpage: 0,/*** A list of page objects. Each page has a list of comments and annotations.** @property pages* @type array* @protected*/pages: [],/*** The reported status of the document.** @property documentstatus* @type int* @protected*/documentstatus: 0,/*** The yui node for the loading icon.** @property loadingicon* @type Node* @protected*/loadingicon: null,/*** Image object of the current page image.** @property pageimage* @type Image* @protected*/pageimage: null,/*** YUI Graphic class for drawing shapes.** @property graphic* @type Graphic* @protected*/graphic: null,/*** Info about the current edit operation.** @property currentedit* @type M.assignfeedback_editpdf.edit* @protected*/currentedit: new M.assignfeedback_editpdf.edit(),/*** Current drawable.** @property currentdrawable* @type M.assignfeedback_editpdf.drawable|false* @protected*/currentdrawable: false,/*** Current drawables.** @property drawables* @type array(M.assignfeedback_editpdf.drawable)* @protected*/drawables: [],/*** Current comment when the comment menu is open.* @property currentcomment* @type M.assignfeedback_editpdf.comment* @protected*/currentcomment: null,/*** Current annotation when the select tool is used.* @property currentannotation* @type M.assignfeedback_editpdf.annotation* @protected*/currentannotation: null,/*** Track the previous annotation so we can remove selection highlights.* @property lastannotation* @type M.assignfeedback_editpdf.annotation* @protected*/lastannotation: null,/*** Last selected annotation tool* @property lastannotationtool* @type String* @protected*/lastannotationtool: "pen",/*** The users comments quick list* @property quicklist* @type M.assignfeedback_editpdf.quickcommentlist* @protected*/quicklist: null,/*** The search comments window.* @property searchcommentswindow* @type M.core.dialogue* @protected*/searchcommentswindow: null,/*** The selected stamp picture.* @property currentstamp* @type String* @protected*/currentstamp: null,/*** The stamps.* @property stamps* @type Array* @protected*/stamps: [],/*** Prevent new comments from appearing* immediately after clicking off a current* comment* @property editingcomment* @type Boolean* @public*/editingcomment: false,/*** Should inactive comments be collapsed?** @property collapsecomments* @type Boolean* @public*/collapsecomments: true,/*** Called during the initialisation process of the object.* @method initializer*/initializer: function() {var link;link = Y.one('#' + this.get('linkid'));if (link) {link.on('click', this.link_handler, this);link.on('key', this.link_handler, 'down:13', this);// We call the amd module to see if we can take control of the review panel.require(['mod_assign/grading_review_panel'], function(ReviewPanelManager) {var panelManager = new ReviewPanelManager();var panel = panelManager.getReviewPanel('assignfeedback_editpdf');if (panel) {panel = Y.one(panel);panel.empty();link.ancestor('.fitem').hide();this.open_in_panel(panel);}this.currentedit.start = false;this.currentedit.end = false;if (!this.get('readonly')) {this.quicklist = new M.assignfeedback_editpdf.quickcommentlist(this);}}.bind(this));}},/*** Called to show/hide buttons and set the current colours/stamps.* @method refresh_button_state*/refresh_button_state: function() {var button, currenttoolnode, imgurl, drawingregion, stampimgurl, drawingcanvas;// Initalise the colour buttons.button = this.get_dialogue_element(SELECTOR.COMMENTCOLOURBUTTON);imgurl = M.util.image_url('background_colour_' + this.currentedit.commentcolour, 'assignfeedback_editpdf');button.one('img').setAttribute('src', imgurl);if (this.currentedit.commentcolour === 'clear') {button.one('img').setStyle('borderStyle', 'dashed');} else {button.one('img').setStyle('borderStyle', 'solid');}button = this.get_dialogue_element(SELECTOR.ANNOTATIONCOLOURBUTTON);imgurl = M.util.image_url('colour_' + this.currentedit.annotationcolour, 'assignfeedback_editpdf');button.one('img').setAttribute('src', imgurl);currenttoolnode = this.get_dialogue_element(TOOLSELECTOR[this.currentedit.tool]);currenttoolnode.addClass('assignfeedback_editpdf_selectedbutton');currenttoolnode.setAttribute('aria-pressed', 'true');drawingregion = this.get_dialogue_element(SELECTOR.DRAWINGREGION);drawingregion.setAttribute('data-currenttool', this.currentedit.tool);button = this.get_dialogue_element(SELECTOR.STAMPSBUTTON);stampimgurl = this.get_stamp_image_url(this.currentedit.stamp);button.one('img').setAttrs({'src': stampimgurl,'height': '16','width': '16'});drawingcanvas = this.get_dialogue_element(SELECTOR.DRAWINGCANVAS);switch (this.currentedit.tool) {case 'drag':drawingcanvas.setStyle('cursor', 'move');break;case 'highlight':drawingcanvas.setStyle('cursor', 'text');break;case 'select':drawingcanvas.setStyle('cursor', 'default');break;case 'stamp':drawingcanvas.setStyle('cursor', 'url(' + stampimgurl + '), crosshair');break;default:drawingcanvas.setStyle('cursor', 'crosshair');}},/*** Called to get the bounds of the drawing region.* @method get_canvas_bounds*/get_canvas_bounds: function() {var canvas = this.get_dialogue_element(SELECTOR.DRAWINGCANVAS),offsetcanvas = canvas.getXY(),offsetleft = offsetcanvas[0],offsettop = offsetcanvas[1],width = parseInt(canvas.getStyle('width'), 10),height = parseInt(canvas.getStyle('height'), 10);return new M.assignfeedback_editpdf.rect(offsetleft, offsettop, width, height);},/*** Called to translate from window coordinates to canvas coordinates.* @method get_canvas_coordinates* @param M.assignfeedback_editpdf.point point in window coordinats.*/get_canvas_coordinates: function(point) {var bounds = this.get_canvas_bounds(),newpoint = new M.assignfeedback_editpdf.point(point.x - bounds.x, point.y - bounds.y);bounds.x = bounds.y = 0;newpoint.clip(bounds);return newpoint;},/*** Called to translate from canvas coordinates to window coordinates.* @method get_window_coordinates* @param M.assignfeedback_editpdf.point point in window coordinats.*/get_window_coordinates: function(point) {var bounds = this.get_canvas_bounds(),newpoint = new M.assignfeedback_editpdf.point(point.x + bounds.x, point.y + bounds.y);return newpoint;},/*** Open the edit-pdf editor in the panel in the page instead of a popup.* @method open_in_panel*/open_in_panel: function(panel) {var drawingcanvas;this.panel = panel;panel.append(this.get('body'));panel.addClass(CSS.DIALOGUE);this.loadingicon = this.get_dialogue_element(SELECTOR.LOADINGICON);drawingcanvas = this.get_dialogue_element(SELECTOR.DRAWINGCANVAS);this.graphic = new Y.Graphic({render: drawingcanvas});if (!this.get('readonly')) {drawingcanvas.on('gesturemovestart', this.edit_start, null, this);drawingcanvas.on('gesturemove', this.edit_move, null, this);drawingcanvas.on('gesturemoveend', this.edit_end, null, this);this.refresh_button_state();}this.start_generation();},/*** Called to open the pdf editing dialogue.* @method link_handler*/link_handler: function(e) {var drawingcanvas;var resize = true;e.preventDefault();if (!this.dialogue) {this.dialogue = new M.core.dialogue({headerContent: this.get('header'),bodyContent: this.get('body'),footerContent: this.get('footer'),modal: true,width: '840px',visible: false,draggable: true});// Add custom class for styling.this.dialogue.get('boundingBox').addClass(CSS.DIALOGUE);this.loadingicon = this.get_dialogue_element(SELECTOR.LOADINGICON);drawingcanvas = this.get_dialogue_element(SELECTOR.DRAWINGCANVAS);this.graphic = new Y.Graphic({render: drawingcanvas});if (!this.get('readonly')) {drawingcanvas.on('gesturemovestart', this.edit_start, null, this);drawingcanvas.on('gesturemove', this.edit_move, null, this);drawingcanvas.on('gesturemoveend', this.edit_end, null, this);this.refresh_button_state();}this.start_generation();drawingcanvas.on('windowresize', this.resize, this);resize = false;}this.dialogue.centerDialogue();this.dialogue.show();// Redraw when the dialogue is moved, to ensure the absolute elements are all positioned correctly.this.dialogue.dd.on('drag:end', this.redraw, this);if (resize) {this.resize(); // When re-opening the dialog call redraw, to make sure the size + layout is correct.}},/*** Called to load the information and annotations for all pages.** @method start_generation*/start_generation: function() {this.poll_document_conversion_status();},/*** Poll the current document conversion status and start the next step* in the process.** @method poll_document_conversion_status*/poll_document_conversion_status: function() {var requestUserId = this.get('userid');Y.io(AJAXBASE, {method: 'get',context: this,sync: false,data: {sesskey: M.cfg.sesskey,action: 'pollconversions',userid: this.get('userid'),attemptnumber: this.get('attemptnumber'),assignmentid: this.get('assignmentid'),readonly: this.get('readonly') ? 1 : 0},on: {success: function(tid, response) {var currentUserRegion = Y.one(SELECTOR.USERINFOREGION);if (currentUserRegion) {var currentUserId = currentUserRegion.getAttribute('data-userid');if (currentUserId && (currentUserId != requestUserId)) {// Polling conversion status needs to abort because// the current user changed.return;}}var data = this.handle_response_data(response),poll = false;if (data) {// When we are requesting the readonly version of the pages, they should// always be available (see document_services::get_page_images_for_attempt)// so we can just serve them immediately without triggering any document// conversion or polling.//// This is necessary to prevent situations where the student has updated// their submission and the teacher has annotated a previous version of// the submission in the assignment grader. In this situation if a student// views the online version of the annotated PDF ("View annotated PDF" link)// the readonly pages here and the updated pages (awaiting conversion) will// never match, and the code endlessly polls.//// See also: MDL-45580, MDL-66626, MDL-75898.if (this.get('readonly') === true) {this.prepare_pages_for_display(data);return;}this.documentstatus = data.status;if (data.status === 0) {// The combined document is still waiting for input to be ready.poll = true;} else if (data.status === 1 || data.status === 3) {// The combine document is ready for conversion into a single PDF.poll = true;} else if (data.status === 2 || data.status === -1) {// The combined PDF is ready.// We now know the page count and can convert it to a set of images.this.pagecount = data.pagecount;if (data.pageready == data.pagecount) {this.prepare_pages_for_display(data);} else {// Some pages are not ready yet.// Note: We use a different polling process here which does not block.this.update_page_load_progress();// Fetch the images for the combined document.this.start_document_to_image_conversion();}}if (poll) {// Check again in 1 second.Y.later(1000, this, this.poll_document_conversion_status);}}},failure: function(tid, response) {return new M.core.exception(response.responseText);}}});},/*** Spwan the PDF to Image conversion on the server.** @method get_images_for_documents*/start_document_to_image_conversion: function() {Y.io(AJAXBASE, {method: 'get',context: this,sync: false,data: {sesskey: M.cfg.sesskey,action: 'pollconversions',userid: this.get('userid'),attemptnumber: this.get('attemptnumber'),assignmentid: this.get('assignmentid'),readonly: this.get('readonly') ? 1 : 0},on: {success: function(tid, response) {var data = this.handle_response_data(response);if (data) {this.documentstatus = data.status;if (data.status === 2) {// The pages are ready. Add all of the annotations to them.this.prepare_pages_for_display(data);}}},failure: function(tid, response) {return new M.core.exception(response.responseText);}}});},/*** Display an error in a small part of the page (don't block everything).** @param string The error text.* @param boolean dismissable Not critical messages can be removed after a short display.* @protected* @method warning*/warning: function(message, dismissable) {var icontemplate = this.get_dialogue_element(SELECTOR.ICONMESSAGECONTAINER);var warningregion = this.get_dialogue_element(SELECTOR.WARNINGMESSAGECONTAINER);var delay = 15, duration = 1;var messageclasses = 'assignfeedback_editpdf_warningmessages alert alert-warning';if (dismissable) {delay = 4;messageclasses = 'assignfeedback_editpdf_warningmessages alert alert-info';}var warningelement = Y.Node.create('<div class="' + messageclasses + '" role="alert"></div>');// Copy info icon template.warningelement.append(icontemplate.one('*').cloneNode());// Append the message.warningelement.append(message);// Add the entire warning to the container.warningregion.prepend(warningelement);// Remove the message after a short delay.warningelement.transition({duration: duration,delay: delay,opacity: 0},function() {warningelement.remove();});},/*** The info about all pages in the pdf has been returned.** @param string The ajax response as text.* @protected* @method prepare_pages_for_display*/prepare_pages_for_display: function(data) {var i, j, comment, error, annotation, readonly;if (!data.pagecount) {if (this.dialogue) {this.dialogue.hide();}// Display alert dialogue.error = new M.core.alert({message: M.util.get_string('cannotopenpdf', 'assignfeedback_editpdf')});error.show();return;}this.pages = data.pages;for (i = 0; i < this.pages.length; i++) {for (j = 0; j < this.pages[i].comments.length; j++) {comment = this.pages[i].comments[j];this.pages[i].comments[j] = new M.assignfeedback_editpdf.comment(this,comment.gradeid,comment.pageno,comment.x,comment.y,comment.width,comment.colour,comment.rawtext);}for (j = 0; j < this.pages[i].annotations.length; j++) {annotation = this.pages[i].annotations[j];this.pages[i].annotations[j] = this.create_annotation(annotation.type, annotation);}}readonly = this.get('readonly');if (!readonly && data.partial) {// Warn about non converted files, but only for teachers.this.warning(M.util.get_string('partialwarning', 'assignfeedback_editpdf'), false);}// Update the ui.if (this.quicklist) {this.quicklist.load();}this.setup_navigation();this.setup_toolbar();this.change_page();},/*** Fetch the page images.** @method update_page_load_progress*/update_page_load_progress: function() {var checkconversionstatus,ajax_error_total = 0,progressbar = this.get_dialogue_element(SELECTOR.PROGRESSBARCONTAINER + ' .bar');if (!progressbar) {return;}// If pages are not loaded, check PDF conversion status for the progress bar.checkconversionstatus = {method: 'get',context: this,sync: false,data: {sesskey: M.cfg.sesskey,action: 'conversionstatus',userid: this.get('userid'),attemptnumber: this.get('attemptnumber'),assignmentid: this.get('assignmentid')},on: {success: function(tid, response) {ajax_error_total = 0;var progress = 0;var progressbar = this.get_dialogue_element(SELECTOR.PROGRESSBARCONTAINER + ' .bar');if (progressbar) {// Calculate progress.progress = (response.response / this.pagecount) * 100;progressbar.setStyle('width', progress + '%');progressbar.ancestor(SELECTOR.PROGRESSBARCONTAINER).setAttribute('aria-valuenow', progress);if (progress < 100) {// Keep polling until all pages are generated.M.util.js_pending('checkconversionstatus');Y.later(1000, this, function() {M.util.js_complete('checkconversionstatus');Y.io(AJAXBASEPROGRESS, checkconversionstatus);});}}},failure: function(tid, response) {ajax_error_total = ajax_error_total + 1;// We only continue on error if the all pages were not generated,// and if the ajax call did not produce 5 errors in the row.if (this.pagecount === 0 && ajax_error_total < 5) {M.util.js_pending('checkconversionstatus');Y.later(1000, this, function() {M.util.js_complete('checkconversionstatus');Y.io(AJAXBASEPROGRESS, checkconversionstatus);});}return new M.core.exception(response.responseText);}}};// We start the AJAX "generated page total number" call a second later to give a chance to// the AJAX "combined pdf generation" call to clean the previous submission images.M.util.js_pending('checkconversionstatus');Y.later(1000, this, function() {ajax_error_total = 0;M.util.js_complete('checkconversionstatus');Y.io(AJAXBASEPROGRESS, checkconversionstatus);});},/*** Handle response data.** @method handle_response_data* @param {object} response* @return {object}*/handle_response_data: function(response) {var data;try {data = Y.JSON.parse(response.responseText);if (data.error) {if (this.dialogue) {this.dialogue.hide();}new M.core.alert({message: M.util.get_string('cannotopenpdf', 'assignfeedback_editpdf'),visible: true});} else {return data;}} catch (e) {if (this.dialogue) {this.dialogue.hide();}new M.core.alert({title: M.util.get_string('cannotopenpdf', 'assignfeedback_editpdf'),visible: true});}return;},/*** Get the full pluginfile url for an image file - just given the filename.** @public* @method get_stamp_image_url* @param string filename*/get_stamp_image_url: function(filename) {var urls = this.get('stampfiles'),fullurl = '';Y.Array.each(urls, function(url) {if (url.indexOf(filename) > 0) {fullurl = url;}}, this);return fullurl;},/*** Attach listeners and enable the color picker buttons.* @protected* @method setup_toolbar*/setup_toolbar: function() {var toolnode,commentcolourbutton,annotationcolourbutton,searchcommentsbutton,expcolcommentsbutton,rotateleftbutton,rotaterightbutton,currentstampbutton,stampfiles,picker,filename;searchcommentsbutton = this.get_dialogue_element(SELECTOR.SEARCHCOMMENTSBUTTON);searchcommentsbutton.on('click', this.open_search_comments, this);searchcommentsbutton.on('key', this.open_search_comments, 'down:13', this);expcolcommentsbutton = this.get_dialogue_element(SELECTOR.EXPCOLCOMMENTSBUTTON);expcolcommentsbutton.on('click', this.expandCollapseComments, this);expcolcommentsbutton.on('key', this.expandCollapseComments, 'down:13', this);if (this.get('readonly')) {return;}// Rotate Left.rotateleftbutton = this.get_dialogue_element(SELECTOR.ROTATELEFTBUTTON);rotateleftbutton.on('click', this.rotatePDF, this, true);rotateleftbutton.on('key', this.rotatePDF, 'down:13', this, true);// Rotate Right.rotaterightbutton = this.get_dialogue_element(SELECTOR.ROTATERIGHTBUTTON);rotaterightbutton.on('click', this.rotatePDF, this, false);rotaterightbutton.on('key', this.rotatePDF, 'down:13', this, false);this.disable_touch_scroll();// Setup the tool buttons.Y.each(TOOLSELECTOR, function(selector, tool) {toolnode = this.get_dialogue_element(selector);toolnode.on('click', this.handle_tool_button, this, tool);toolnode.on('key', this.handle_tool_button, 'down:13', this, tool);toolnode.setAttribute('aria-pressed', 'false');}, this);// Set the default tool.commentcolourbutton = this.get_dialogue_element(SELECTOR.COMMENTCOLOURBUTTON);picker = new M.assignfeedback_editpdf.colourpicker({buttonNode: commentcolourbutton,colours: COMMENTCOLOUR,iconprefix: 'background_colour_',callback: function(e) {var colour = e.target.getAttribute('data-colour');if (!colour) {colour = e.target.ancestor().getAttribute('data-colour');}this.currentedit.commentcolour = colour;this.handle_tool_button(e, "comment");},context: this});annotationcolourbutton = this.get_dialogue_element(SELECTOR.ANNOTATIONCOLOURBUTTON);picker = new M.assignfeedback_editpdf.colourpicker({buttonNode: annotationcolourbutton,iconprefix: 'colour_',colours: ANNOTATIONCOLOUR,callback: function(e) {var colour = e.target.getAttribute('data-colour');if (!colour) {colour = e.target.ancestor().getAttribute('data-colour');}this.currentedit.annotationcolour = colour;if (this.lastannotationtool) {this.handle_tool_button(e, this.lastannotationtool);} else {this.handle_tool_button(e, "pen");}},context: this});stampfiles = this.get('stampfiles');if (stampfiles.length <= 0) {this.get_dialogue_element(TOOLSELECTOR.stamp).ancestor().hide();} else {filename = stampfiles[0].substr(stampfiles[0].lastIndexOf('/') + 1);this.currentedit.stamp = filename;currentstampbutton = this.get_dialogue_element(SELECTOR.STAMPSBUTTON);picker = new M.assignfeedback_editpdf.stamppicker({buttonNode: currentstampbutton,stamps: stampfiles,callback: function(e) {var stamp = e.target.getAttribute('data-stamp'),filename;if (!stamp) {stamp = e.target.ancestor().getAttribute('data-stamp');}filename = stamp.substr(stamp.lastIndexOf('/'));this.currentedit.stamp = filename;this.handle_tool_button(e, "stamp");},context: this});this.refresh_button_state();}},/*** Change the current tool.* @protected* @method handle_tool_button*/handle_tool_button: function(e, tool) {var currenttoolnode;e.preventDefault();// Change style of the pressed button.currenttoolnode = this.get_dialogue_element(TOOLSELECTOR[this.currentedit.tool]);currenttoolnode.removeClass('assignfeedback_editpdf_selectedbutton');currenttoolnode.setAttribute('aria-pressed', 'false');this.currentedit.tool = tool;if (tool !== "comment" && tool !== "select" && tool !== "drag" && tool !== "stamp") {this.lastannotationtool = tool;}this.refresh_button_state();},/*** JSON encode the current page data - stripping out drawable references which cannot be encoded.* @protected* @method stringify_current_page* @return string*/stringify_current_page: function() {var comments = [],annotations = [],page,i = 0;for (i = 0; i < this.pages[this.currentpage].comments.length; i++) {comments[i] = this.pages[this.currentpage].comments[i].clean();}for (i = 0; i < this.pages[this.currentpage].annotations.length; i++) {annotations[i] = this.pages[this.currentpage].annotations[i].clean();}page = {comments: comments, annotations: annotations};return Y.JSON.stringify(page);},/*** Generate a drawable from the current in progress edit.* @protected* @method get_current_drawable*/get_current_drawable: function() {var comment,annotation,drawable = false;if (!this.currentedit.start || !this.currentedit.end) {return false;}if (this.currentedit.tool === 'comment') {comment = new M.assignfeedback_editpdf.comment(this);drawable = comment.draw_current_edit(this.currentedit);} else {annotation = this.create_annotation(this.currentedit.tool, {});if (annotation) {drawable = annotation.draw_current_edit(this.currentedit);}}return drawable;},/*** Find an element within the dialogue.* @protected* @method get_dialogue_element*/get_dialogue_element: function(selector) {if (this.panel) {return this.panel.one(selector);} else {return this.dialogue.get('boundingBox').one(selector);}},/*** Redraw the active edit.* @protected* @method redraw_active_edit*/redraw_current_edit: function() {if (this.currentdrawable) {this.currentdrawable.erase();}this.currentdrawable = this.get_current_drawable();},/*** Event handler for mousedown or touchstart.* @protected* @param Event* @method edit_start*/edit_start: function(e) {var canvas = this.get_dialogue_element(SELECTOR.DRAWINGCANVAS),offset = canvas.getXY(),scrolltop = canvas.get('docScrollY'),scrollleft = canvas.get('docScrollX'),point = {x: e.clientX - offset[0] + scrollleft,y: e.clientY - offset[1] + scrolltop},selected = false;// Ignore right mouse click.if (e.button === 3) {return;}if (this.currentedit.starttime) {return;}if (this.editingcomment) {return;}this.currentedit.starttime = new Date().getTime();this.currentedit.start = point;this.currentedit.end = {x: point.x, y: point.y};if (this.currentedit.tool === 'select') {var x = this.currentedit.end.x,y = this.currentedit.end.y,annotations = this.pages[this.currentpage].annotations;// Find the first annotation whose bounds encompass the click.Y.each(annotations, function(annotation) {if (((x - annotation.x) * (x - annotation.endx)) <= 0 &&((y - annotation.y) * (y - annotation.endy)) <= 0) {selected = annotation;}});if (selected) {this.lastannotation = this.currentannotation;this.currentannotation = selected;if (this.lastannotation && this.lastannotation !== selected) {// Redraw the last selected annotation to remove the highlight.if (this.lastannotation.drawable) {this.lastannotation.drawable.erase();this.drawables.push(this.lastannotation.draw());}}// Redraw the newly selected annotation to show the highlight.if (this.currentannotation.drawable) {this.currentannotation.drawable.erase();}this.drawables.push(this.currentannotation.draw());} else {this.lastannotation = this.currentannotation;this.currentannotation = null;// Redraw the last selected annotation to remove the highlight.if (this.lastannotation && this.lastannotation.drawable) {this.lastannotation.drawable.erase();this.drawables.push(this.lastannotation.draw());}}}if (this.currentannotation) {// Used to calculate drag offset.this.currentedit.annotationstart = {x: this.currentannotation.x,y: this.currentannotation.y};}},/*** Event handler for mousemove.* @protected* @param Event* @method edit_move*/edit_move: function(e) {var bounds = this.get_canvas_bounds(),canvas = this.get_dialogue_element(SELECTOR.DRAWINGCANVAS),drawingregion = this.get_dialogue_element(SELECTOR.DRAWINGREGION),clientpoint = new M.assignfeedback_editpdf.point(e.clientX + canvas.get('docScrollX'),e.clientY + canvas.get('docScrollY')),point = this.get_canvas_coordinates(clientpoint),activeelement = document.activeElement,diffX,diffY;if (activeelement.type === 'textarea') {return;}e.preventDefault();// Ignore events out of the canvas area.if (point.x < 0 || point.x > bounds.width || point.y < 0 || point.y > bounds.height) {return;}if (this.currentedit.tool === 'pen') {this.currentedit.path.push(point);}if (this.currentedit.tool === 'select') {if (this.currentannotation && this.currentedit) {this.currentannotation.move(this.currentedit.annotationstart.x + point.x - this.currentedit.start.x,this.currentedit.annotationstart.y + point.y - this.currentedit.start.y);}} else if (this.currentedit.tool === 'drag') {diffX = point.x - this.currentedit.start.x;diffY = point.y - this.currentedit.start.y;drawingregion.getDOMNode().scrollLeft -= diffX;drawingregion.getDOMNode().scrollTop -= diffY;} else {if (this.currentedit.start) {this.currentedit.end = point;this.redraw_current_edit();}}},/*** Event handler for mouseup or touchend.* @protected* @param Event* @method edit_end*/edit_end: function() {var duration,comment,annotation;duration = new Date().getTime() - this.currentedit.start;if (duration < CLICKTIMEOUT || this.currentedit.start === false) {return;}if (this.currentedit.tool === 'comment') {if (this.currentdrawable) {this.currentdrawable.erase();}this.currentdrawable = false;comment = new M.assignfeedback_editpdf.comment(this);if (comment.init_from_edit(this.currentedit)) {this.pages[this.currentpage].comments.push(comment);this.drawables.push(comment.draw(true));this.editingcomment = true;}} else {annotation = this.create_annotation(this.currentedit.tool, {});if (annotation) {if (this.currentdrawable) {this.currentdrawable.erase();}this.currentdrawable = false;if (annotation.init_from_edit(this.currentedit)) {this.pages[this.currentpage].annotations.push(annotation);this.drawables.push(annotation.draw());}}}// Save the changes.this.save_current_page();// Reset the current edit.this.currentedit.starttime = 0;this.currentedit.start = false;this.currentedit.end = false;this.currentedit.path = [];},/*** Resize the dialogue window when the browser is resized.* @public* @method resize*/resize: function() {var drawingregion, drawregionheight;if (this.dialogue) {if (!this.dialogue.get('visible')) {return;}this.dialogue.centerDialogue();}// Make sure the dialogue box is not bigger than the max height of the viewport.drawregionheight = Y.one('body').get('winHeight') - 120; // Space for toolbar + titlebar.if (drawregionheight < 100) {drawregionheight = 100;}drawingregion = this.get_dialogue_element(SELECTOR.DRAWINGREGION);if (this.dialogue) {drawingregion.setStyle('maxHeight', drawregionheight + 'px');}this.redraw();return true;},/*** Factory method for creating annotations of the correct subclass.* @public* @method create_annotation*/create_annotation: function(type, data) {data.type = type;data.editor = this;if (type === "line") {return new M.assignfeedback_editpdf.annotationline(data);} else if (type === "rectangle") {return new M.assignfeedback_editpdf.annotationrectangle(data);} else if (type === "oval") {return new M.assignfeedback_editpdf.annotationoval(data);} else if (type === "pen") {return new M.assignfeedback_editpdf.annotationpen(data);} else if (type === "highlight") {return new M.assignfeedback_editpdf.annotationhighlight(data);} else if (type === "stamp") {return new M.assignfeedback_editpdf.annotationstamp(data);}return false;},/*** Save all the annotations and comments for the current page.* @protected* @method save_current_page*/save_current_page: function() {this.clear_warnings(false);var ajaxurl = AJAXBASE,config;config = {method: 'post',context: this,sync: false,data: {'sesskey': M.cfg.sesskey,'action': 'savepage','index': this.currentpage,'userid': this.get('userid'),'attemptnumber': this.get('attemptnumber'),'assignmentid': this.get('assignmentid'),'page': this.stringify_current_page()},on: {success: function(tid, response) {var jsondata;try {jsondata = Y.JSON.parse(response.responseText);if (jsondata.error) {return new M.core.ajaxException(jsondata);}// Show warning that we have not saved the feedback.Y.one(SELECTOR.UNSAVEDCHANGESINPUT).set('value', 'true');this.warning(M.util.get_string('draftchangessaved', 'assignfeedback_editpdf'), true);} catch (e) {return new M.core.exception(e);}},failure: function(tid, response) {return new M.core.exception(response.responseText);}}};Y.io(ajaxurl, config);},/*** Event handler to open the comment search interface.** @param Event e* @protected* @method open_search_comments*/open_search_comments: function(e) {if (!this.searchcommentswindow) {this.searchcommentswindow = new M.assignfeedback_editpdf.commentsearch({editor: this});}this.searchcommentswindow.show();e.preventDefault();},/*** Toggle function to expand/collapse all comments on page.** @protected* @method expandCollapseComments*/expandCollapseComments: function() {var comments = Y.all('.commentdrawable');if (this.collapsecomments) {this.collapsecomments = false;comments.removeClass('commentcollapsed');} else {this.collapsecomments = true;comments.addClass('commentcollapsed');}},/*** Redraw all the comments and annotations.* @protected* @method redraw*/redraw: function() {var i,page;page = this.pages[this.currentpage];if (page === undefined) {return; // Can happen if a redraw is triggered by an event, before the page has been selected.}while (this.drawables.length > 0) {this.drawables.pop().erase();}for (i = 0; i < page.annotations.length; i++) {this.drawables.push(page.annotations[i].draw());}for (i = 0; i < page.comments.length; i++) {this.drawables.push(page.comments[i].draw(false));}},/*** Clear all current warning messages from display.* @protected* @method clear_warnings* @param {Boolean} allwarnings If true, all previous warnings are removed.*/clear_warnings: function(allwarnings) {// Remove all warning messages, they may not relate to the current document or page anymore.var warningregion = this.get_dialogue_element(SELECTOR.WARNINGMESSAGECONTAINER);if (allwarnings) {warningregion.empty();} else {warningregion.all('.alert-info').remove(true);}},/*** Load the image for this pdf page and remove the loading icon (if there).* @protected* @method change_page*/change_page: function() {var drawingcanvas = this.get_dialogue_element(SELECTOR.DRAWINGCANVAS),page,previousbutton,nextbutton;previousbutton = this.get_dialogue_element(SELECTOR.PREVIOUSBUTTON);nextbutton = this.get_dialogue_element(SELECTOR.NEXTBUTTON);if (this.currentpage > 0) {previousbutton.removeAttribute('disabled');} else {previousbutton.setAttribute('disabled', 'true');}if (this.currentpage < (this.pagecount - 1)) {nextbutton.removeAttribute('disabled');} else {nextbutton.setAttribute('disabled', 'true');}page = this.pages[this.currentpage];if (this.loadingicon) {this.loadingicon.hide();}drawingcanvas.setStyle('backgroundImage', 'url("' + page.url + '")');drawingcanvas.setStyle('width', page.width + 'px');drawingcanvas.setStyle('height', page.height + 'px');drawingcanvas.scrollIntoView();// Update page select.this.get_dialogue_element(SELECTOR.PAGESELECT).set('selectedIndex', this.currentpage);this.resize(); // Internally will call 'redraw', after checking the dialogue size.},/*** Now we know how many pages there are,* we can enable the navigation controls.* @protected* @method setup_navigation*/setup_navigation: function() {var pageselect,i,strinfo,option,previousbutton,nextbutton;pageselect = this.get_dialogue_element(SELECTOR.PAGESELECT);var options = pageselect.all('option');if (options.size() <= 1) {for (i = 0; i < this.pages.length; i++) {option = Y.Node.create('<option/>');option.setAttribute('value', i);strinfo = {page: i + 1, total: this.pages.length};option.setHTML(M.util.get_string('pagexofy', 'assignfeedback_editpdf', strinfo));pageselect.append(option);}}pageselect.removeAttribute('disabled');pageselect.on('change', function() {this.currentpage = pageselect.get('value');this.clear_warnings(false);this.change_page();}, this);previousbutton = this.get_dialogue_element(SELECTOR.PREVIOUSBUTTON);nextbutton = this.get_dialogue_element(SELECTOR.NEXTBUTTON);previousbutton.on('click', this.previous_page, this);previousbutton.on('key', this.previous_page, 'down:13', this);nextbutton.on('click', this.next_page, this);nextbutton.on('key', this.next_page, 'down:13', this);},/*** Navigate to the previous page.* @protected* @method previous_page*/previous_page: function(e) {e.preventDefault();this.currentpage--;if (this.currentpage < 0) {this.currentpage = 0;}this.clear_warnings(false);this.change_page();},/*** Navigate to the next page.* @protected* @method next_page*/next_page: function(e) {e.preventDefault();this.currentpage++;if (this.currentpage >= this.pages.length) {this.currentpage = this.pages.length - 1;}this.clear_warnings(false);this.change_page();},/*** Update any absolutely positioned nodes, within each drawable, when the drawing canvas is scrolled* @protected* @method move_canvas*/move_canvas: function() {var drawingregion, x, y, i;drawingregion = this.get_dialogue_element(SELECTOR.DRAWINGREGION);x = parseInt(drawingregion.get('scrollLeft'), 10);y = parseInt(drawingregion.get('scrollTop'), 10);for (i = 0; i < this.drawables.length; i++) {this.drawables[i].scroll_update(x, y);}},/*** Calculate degree to rotate.* @protected* @param {Object} e javascript event* @param {boolean} left true if rotating left, false if rotating right* @method rotatepdf*/rotatePDF: function(e, left) {e.preventDefault();if (this.get('destroyed')) {return;}var self = this;// Save old coordinates.var i;this.oldannotationcoordinates = [];var annotations = this.pages[this.currentpage].annotations;for (i = 0; i < annotations.length; i++) {var oldannotation = annotations[i];this.oldannotationcoordinates.push([oldannotation.x, oldannotation.y]);}var ajaxurl = AJAXBASE;var config = {method: 'post',context: this,sync: false,data: {'sesskey': M.cfg.sesskey,'action': 'rotatepage','index': this.currentpage,'userid': this.get('userid'),'attemptnumber': this.get('attemptnumber'),'assignmentid': this.get('assignmentid'),'rotateleft': left},on: {success: function(tid, response) {var jsondata;try {jsondata = Y.JSON.parse(response.responseText);var page = self.pages[self.currentpage];page.url = jsondata.page.url;page.width = jsondata.page.width;page.height = jsondata.page.height;self.loadingicon.hide();// Change canvas size to fix the new page.var drawingcanvas = self.get_dialogue_element(SELECTOR.DRAWINGCANVAS);drawingcanvas.setStyle('backgroundImage', 'url("' + page.url + '")');drawingcanvas.setStyle('width', page.width + 'px');drawingcanvas.setStyle('height', page.height + 'px');/*** Move annotation to old position.* Reason: When canvas size change* > Shape annotations move with relation to canvas coordinates* > Nodes of stamp annotations move with relation to canvas coordinates* > Presentation (picture) of stamp annotations stay to document coordinates (stick to its own position)* > Without relocating the node and presentation of a stamp annotation to the same x,y position,* the stamp annotation cannot be chosen when using "drag" tool.* The following code brings all annotations to their old positions with relation to the canvas coordinates.*/var i;// Annotations.var annotations = page.annotations;for (i = 0; i < annotations.length; i++) {if (self.oldannotationcoordinates && self.oldannotationcoordinates[i]) {var oldX = self.oldannotationcoordinates[i][0];var oldY = self.oldannotationcoordinates[i][1];var annotation = annotations[i];annotation.move(oldX, oldY);}}/*** Update Position of comments with relation to canvas coordinates.* Without this code, the comments will stay at their positions in windows/document coordinates.*/var oldcomments = page.comments;for (i = 0; i < oldcomments.length; i++) {oldcomments[i].updatePosition();}// Save Annotations.return self.save_current_page();} catch (e) {return new M.core.exception(e);}},failure: function(tid, response) {return new M.core.exception(response.responseText);}}};Y.io(ajaxurl, config);},/*** Test the browser support for options objects on event listeners.* @return Boolean*/event_listener_options_supported: function() {var passivesupported = false,options,testeventname = "testpassiveeventoptions";// Options support testing example from:// https://developer.mozilla.org/en-US/docs/Web/API/EventTarget/addEventListenertry {options = Object.defineProperty({}, "passive", {// eslint-disable-next-line getter-returnget: function() {passivesupported = true;}});// We use an event name that is not likely to conflict with any real event.document.addEventListener(testeventname, options, options);// We remove the event listener as we have tested the options already.document.removeEventListener(testeventname, options, options);} catch(err) {// It's already false.passivesupported = false;}return passivesupported;},/*** Disable Touch Move scrolling*/disable_touch_scroll: function() {if (this.event_listener_options_supported()) {document.addEventListener('touchmove', this.stop_touch_scroll.bind(this), {passive: false});}},/*** Stop Touch Scrolling* @param {Object} e*/stop_touch_scroll: function(e) {var drawingregion = this.get_dialogue_element(SELECTOR.DRAWINGREGION);if (drawingregion.contains(e.target)) {e.stopPropagation();e.preventDefault();}}};Y.extend(EDITOR, Y.Base, EDITOR.prototype, {NAME: 'moodle-assignfeedback_editpdf-editor',ATTRS: {userid: {validator: Y.Lang.isInteger,value: 0},assignmentid: {validator: Y.Lang.isInteger,value: 0},attemptnumber: {validator: Y.Lang.isInteger,value: 0},header: {validator: Y.Lang.isString,value: ''},body: {validator: Y.Lang.isString,value: ''},footer: {validator: Y.Lang.isString,value: ''},linkid: {validator: Y.Lang.isString,value: ''},deletelinkid: {validator: Y.Lang.isString,value: ''},readonly: {validator: Y.Lang.isBoolean,value: true},stampfiles: {validator: Y.Lang.isArray,value: ''}}});M.assignfeedback_editpdf = M.assignfeedback_editpdf || {};M.assignfeedback_editpdf.editor = M.assignfeedback_editpdf.editor || {};/*** Init function - will create a new instance every time.* @method editor.init* @static* @param {Object} params*/M.assignfeedback_editpdf.editor.init = M.assignfeedback_editpdf.editor.init || function(params) {M.assignfeedback_editpdf.instance = new EDITOR(params);return M.assignfeedback_editpdf.instance;};