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// This file is part of Moodle - http://moodle.org/
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//
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// Moodle is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// Moodle is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
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define(['jquery', 'mod_hvp/communicator'], function($, H5PEmbedCommunicator) {
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// Wait for instances to be initialize.
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$(document).ready(function() {
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$('.h5p-iframe').ready(function() {
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var iFrame = document.querySelector('.h5p-iframe');
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var H5P = iFrame.contentWindow.H5P;
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// Check for H5P instances.
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if (!H5P || !H5P.instances || !H5P.instances[0]) {
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return;
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}
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var resizeDelay;
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var instance = H5P.instances[0];
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var parentIsFriendly = false;
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// Handle that the resizer is loaded after the iframe.
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H5PEmbedCommunicator.on('ready', function() {
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H5PEmbedCommunicator.send('hello');
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});
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// Handle hello message from our parent window.
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H5PEmbedCommunicator.on('hello', function() {
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// Initial setup/handshake is done.
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parentIsFriendly = true;
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// Hide scrollbars for correct size.
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iFrame.contentDocument.body.style.overflow = 'hidden';
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document.body.classList.add('h5p-resizing');
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// Content need to be resized to fit the new iframe size.
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H5P.trigger(instance, 'resize');
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});
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// When resize has been prepared tell parent window to resize.
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H5PEmbedCommunicator.on('resizePrepared', function() {
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H5PEmbedCommunicator.send('resize', {
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scrollHeight: iFrame.contentDocument.body.scrollHeight
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});
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});
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H5PEmbedCommunicator.on('resize', function() {
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H5P.trigger(instance, 'resize');
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});
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H5P.on(instance, 'resize', function() {
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if (H5P.isFullscreen) {
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return; // Skip iframe resize.
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}
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// Use a delay to make sure iframe is resized to the correct size.
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clearTimeout(resizeDelay);
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resizeDelay = setTimeout(function() {
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// Only resize if the iframe can be resized.
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if (parentIsFriendly) {
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H5PEmbedCommunicator.send('prepareResize',
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{
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scrollHeight: iFrame.contentDocument.body.scrollHeight,
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clientHeight: iFrame.contentDocument.body.clientHeight
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}
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);
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} else {
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H5PEmbedCommunicator.send('hello');
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}
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}, 0);
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});
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// Trigger initial resize for instance.
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H5P.trigger(instance, 'resize');
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});
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});
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});
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