291 lines
8.4 KiB
JavaScript
291 lines
8.4 KiB
JavaScript
YUI.add('moodle-mod_customcert-rearrange', function (Y, NAME) {
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/**
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* Rearrange elements in the custom certificate
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*
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* @class Y.M.mod_customcert.rearrange
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* @constructor
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*/
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var Rearrange = function() {
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Rearrange.superclass.constructor.apply(this, [arguments]);
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};
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Y.extend(Rearrange, Y.Base, {
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/**
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* The template id.
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*/
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templateid: 0,
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/**
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* The customcert page we are displaying.
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*/
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page: [],
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/**
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* The custom certificate elements to display.
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*/
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elements: [],
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/**
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* Store the X coordinates of the top left of the pdf div.
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*/
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pdfx: 0,
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/**
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* Store the Y coordinates of the top left of the pdf div.
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*/
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pdfy: 0,
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/**
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* Store the width of the pdf div.
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*/
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pdfwidth: 0,
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/**
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* Store the height of the pdf div.
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*/
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pdfheight: 0,
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/**
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* Store the location of the element before we move.
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*/
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elementxy: 0,
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/**
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* Store the left boundary of the pdf div.
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*/
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pdfleftboundary: 0,
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/**
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* Store the right boundary of the pdf div.
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*/
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pdfrightboundary: 0,
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/**
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* The number of pixels in a mm.
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*/
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pixelsinmm: 3.779527559055, // 3.779528.
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/**
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* Initialise.
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*
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* @param {Array} params
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*/
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initializer: function(params) {
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// Set the course module id.
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this.templateid = params[0];
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// Set the page.
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this.page = params[1];
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// Set the elements.
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this.elements = params[2];
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// Set the PDF dimensions.
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this.pdfx = Y.one('#pdf').getX();
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this.pdfy = Y.one('#pdf').getY();
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this.pdfwidth = parseFloat(Y.one('#pdf').getComputedStyle('width'));
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this.pdfheight = parseFloat(Y.one('#pdf').getComputedStyle('height'));
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// Set the boundaries.
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this.pdfleftboundary = this.pdfx;
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if (this.page.leftmargin) {
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this.pdfleftboundary += parseInt(this.page.leftmargin * this.pixelsinmm, 10);
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}
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this.pdfrightboundary = this.pdfx + this.pdfwidth;
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if (this.page.rightmargin) {
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this.pdfrightboundary -= parseInt(this.page.rightmargin * this.pixelsinmm, 10);
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}
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this.setpositions();
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this.createevents();
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},
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/**
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* Sets the current position of the elements.
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*/
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setpositions: function() {
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// Go through the elements and set their positions.
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for (var key in this.elements) {
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var element = this.elements[key];
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var posx = this.pdfx + element.posx * this.pixelsinmm;
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var posy = this.pdfy + element.posy * this.pixelsinmm;
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var nodewidth = parseFloat(Y.one('#element-' + element.id).getComputedStyle('width'));
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var maxwidth = element.width * this.pixelsinmm;
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if (maxwidth && (nodewidth > maxwidth)) {
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nodewidth = maxwidth;
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}
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switch (element.refpoint) {
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case '1': // Top-center.
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posx -= nodewidth / 2;
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break;
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case '2': // Top-right.
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posx = posx - nodewidth + 2;
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break;
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}
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Y.one('#element-' + element.id).setX(posx);
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Y.one('#element-' + element.id).setY(posy);
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}
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},
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/**
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* Creates the JS events for changing element positions.
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*/
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createevents: function() {
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// Trigger a save event when save button is pushed.
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Y.one('.savepositionsbtn [type=submit]').on('click', function(e) {
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this.savepositions(e);
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}, this);
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// Trigger a save event when apply button is pushed.
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Y.one('.applypositionsbtn [type=submit]').on('click', function(e) {
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this.savepositions(e);
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e.preventDefault();
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}, this);
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// Define the container and the elements that are draggable.
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var del = new Y.DD.Delegate({
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container: '#pdf',
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nodes: '.element'
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});
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// When we start dragging keep track of it's position as we may set it back.
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del.on('drag:start', function() {
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var node = del.get('currentNode');
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this.elementxy = node.getXY();
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}, this);
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// When we finish the dragging action check that the node is in bounds,
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// if not, set it back to where it was.
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del.on('drag:end', function() {
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var node = del.get('currentNode');
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if (this.isoutofbounds(node)) {
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node.setXY(this.elementxy);
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}
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}, this);
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},
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/**
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* Returns true if any part of the element is placed outside of the PDF div, false otherwise.
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*
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* @param {Node} node
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* @returns {boolean}
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*/
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isoutofbounds: function(node) {
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// Get the width and height of the node.
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var nodewidth = parseFloat(node.getComputedStyle('width'));
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var nodeheight = parseFloat(node.getComputedStyle('height'));
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// Store the positions of each edge of the node.
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var left = node.getX();
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var right = left + nodewidth;
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var top = node.getY();
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var bottom = top + nodeheight;
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// Check if it is out of bounds horizontally.
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if ((left < this.pdfleftboundary) || (right > this.pdfrightboundary)) {
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return true;
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}
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// Check if it is out of bounds vertically.
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if ((top < this.pdfy) || (bottom > (this.pdfy + this.pdfheight))) {
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return true;
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}
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return false;
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},
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/**
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* Perform an AJAX call and save the positions of the elements.
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*
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* @param {Event} e
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*/
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savepositions: function(e) {
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// The parameters to send the AJAX call.
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var params = {
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tid: this.templateid,
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values: []
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};
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// Go through the elements and save their positions.
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for (var key in this.elements) {
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var element = this.elements[key];
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var node = Y.one('#element-' + element.id);
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// Get the current X and Y positions and refpoint for this element.
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var posx = node.getX() - this.pdfx;
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var posy = node.getY() - this.pdfy;
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var refpoint = node.getData('refpoint');
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var nodewidth = parseFloat(node.getComputedStyle('width'));
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switch (refpoint) {
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case '1': // Top-center.
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posx += nodewidth / 2;
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break;
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case '2': // Top-right.
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posx += nodewidth;
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break;
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}
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// Set the parameters to pass to the AJAX request.
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params.values.push({
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id: element.id,
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posx: Math.round(parseFloat(posx / this.pixelsinmm)),
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posy: Math.round(parseFloat(posy / this.pixelsinmm))
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});
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}
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params.values = JSON.stringify(params.values);
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// Save these positions.
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Y.io(M.cfg.wwwroot + '/mod/customcert/ajax.php', {
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method: 'POST',
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data: params,
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on: {
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failure: function(tid, response) {
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this.ajaxfailure(response);
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},
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success: function() {
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var formnode = e.currentTarget.ancestor('form', true);
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var baseurl = formnode.getAttribute('action');
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var pageinput = formnode.one('[name=pid]');
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if (pageinput) {
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var pageid = pageinput.get('value');
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window.location = baseurl + '?pid=' + pageid;
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} else {
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var templateid = formnode.one('[name=tid]').get('value');
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window.location = baseurl + '?tid=' + templateid;
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}
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}
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},
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context: this
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});
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e.preventDefault();
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},
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/**
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* Handles any failures during an AJAX call.
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*
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* @param {XMLHttpRequest} response
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* @returns {M.core.exception}
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*/
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ajaxfailure: function(response) {
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var e = {
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name: response.status + ' ' + response.statusText,
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message: response.responseText
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};
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return new M.core.exception(e);
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}
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});
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Y.namespace('M.mod_customcert.rearrange').init = function(templateid, page, elements) {
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new Rearrange(templateid, page, elements);
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};
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}, '@VERSION@', {"requires": ["dd-delegate", "dd-drag"]});
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