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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
. /** * Javascript helper function for IMS Content Package module. * * @package mod * @subpackage imscp * @copyright 2009 Petr Skoda {@link http://skodak.org} * @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later */ M.mod_imscp = {}; M.mod_imscp.init = function(Y) { var imscp_layout_widget; var imscp_current_node; var imscp_buttons = []; var imscp_bloody_labelclick = false; Y.use('yui2-resize', 'yui2-dragdrop', 'yui2-container', 'yui2-button', 'yui2-layout', 'yui2-treeview', 'yui2-json', 'yui2-event', function(Y) { var imscp_activate_item_by_index = function(index) { imscp_activate_item(Y.YUI2.widget.TreeView.getNode('imscp_tree', index)); }; var imscp_activate_item = function(node) { if (!node) { return; } imscp_current_node = node; imscp_current_node.highlight(); var content = new Y.YUI2.util.Element('imscp_content'); var obj; if (node.href) { try { // First try IE way - it can not set name attribute later // and also it has some restrictions on DOM access from object tag. obj = document.createElement('
'); } catch (e) { obj = document.createElement('object'); obj.setAttribute('id', 'imscp_object'); obj.setAttribute('type', 'text/html'); obj.setAttribute('data', node.href); } } else { // No href, so create links to children. obj = document.createElement('div'); obj.setAttribute('id', 'imscp_child_list'); var title = document.createElement('h2'); title.appendChild(document.createTextNode(node.label)); title.setAttribute('class', 'sectionname'); obj.appendChild(title); var ul = document.createElement('ul'); obj.appendChild(ul); for (var i = 0; i < node.children.length; i++) { var childnode = node.children[i]; var li = document.createElement('li'); var a = document.createElement('a'); a.appendChild(document.createTextNode(childnode.label)); a.setAttribute('id', 'ref_' + childnode.index); Y.YUI2.util.Event.addListener(a, "click", function () { imscp_activate_item_by_index(this.id.substr(4)); }); ul.appendChild(li); li.appendChild(a); } } var old = Y.YUI2.util.Dom.get('imscp_object'); if (old) { content.replaceChild(obj, old); } else { old = Y.YUI2.util.Dom.get('imscp_child_list'); if (old) { content.replaceChild(obj, old); } else { content.appendChild(obj); } } imscp_resize_frame(); imscp_current_node.focus(); imscp_fixnav(); }; /** * Enables/disables navigation buttons as needed. * @return void */ var imscp_fixnav = function() { imscp_buttons[0].set('disabled', (imscp_skipprev(imscp_current_node) == null)); imscp_buttons[1].set('disabled', (imscp_prev(imscp_current_node) == null)); imscp_buttons[2].set('disabled', (imscp_up(imscp_current_node) == null)); imscp_buttons[3].set('disabled', (imscp_next(imscp_current_node) == null)); imscp_buttons[4].set('disabled', (imscp_skipnext(imscp_current_node) == null)); }; var imscp_resize_layout = function(alsowidth) { if (alsowidth) { var layout = Y.YUI2.util.Dom.get('imscp_layout'); var newwidth = imscp_get_htmlelement_size('maincontent', 'width'); layout.style.width = '600px'; if (newwidth > 600) { layout.style.width = newwidth + 'px'; } } // Make sure that the max width of the TOC doesn't go to far. var left = imscp_layout_widget.getUnitByPosition('left'); var maxwidth = parseInt(Y.YUI2.util.Dom.getStyle('imscp_layout', 'width')); left.set('maxWidth', (maxwidth - 10)); var cwidth = left.get('width'); if (cwidth > (maxwidth - 10)) { left.set('width', (maxwidth - 10)); } var headerheight = imscp_get_htmlelement_size('page-header', 'height'); var footerheight = imscp_get_htmlelement_size('page-footer', 'height'); var newheight = parseInt(Y.YUI2.util.Dom.getViewportHeight()) - footerheight - headerheight - 20; if (newheight < 400) { newheight = 400; } imscp_layout_widget.setStyle('height', newheight + 'px'); imscp_layout_widget.render(); imscp_resize_frame(); }; var imscp_get_htmlelement_size = function(el, prop) { var val = Y.YUI2.util.Dom.getStyle(el, prop); if (val == 'auto') { if (el.get) { el = el.get('element'); // Get real HTMLElement from YUI element. } val = Y.YUI2.util.Dom.getComputedStyle(Y.YUI2.util.Dom.get(el), prop); } return parseInt(val); }; var imscp_resize_frame = function() { obj = Y.YUI2.util.Dom.get('imscp_object'); if (obj) { var content = imscp_layout_widget.getUnitByPosition('center').get('wrap'); // Basically trap IE6 and 7. if (Y.YUI2.env.ua.ie > 5 && Y.YUI2.env.ua.ie < 8) { if( obj.style.setAttribute ) { obj.style.setAttribute("cssText", 'width: ' + (content.offsetWidth - 6) + 'px; height: ' + (content.offsetHeight - 10) + 'px;'); } else { obj.style.setAttribute('width', (content.offsetWidth - 6) + 'px', 0); obj.style.setAttribute('height', (content.offsetHeight - 10) + 'px', 0); } } else { obj.style.width = (content.offsetWidth - 6) + 'px'; obj.style.height = (content.offsetHeight - 10) + 'px'; } } }; var imscp_firstlinked = function(node) { // Return first item with an href. if (node.href) { return node; } else if (node.children) { return imscp_firstlinked(node.children[0]); } else { return null; } }; var imscp_up = function(node) { if (node.depth > 0) { return node.parent; } return null; }; var imscp_lastchild = function(node) { if (node.children.length) { return imscp_lastchild(node.children[node.children.length - 1]); } else { return node; } }; var imscp_prev = function(node) { if (node.previousSibling && node.previousSibling.children.length) { return imscp_lastchild(node.previousSibling); } return imscp_skipprev(node); }; var imscp_skipprev = function(node) { if (node.previousSibling) { return node.previousSibling; } else if (node.depth > 0) { return node.parent; } return null; }; var imscp_next = function(node) { if (node.children.length) { return node.children[0]; } return imscp_skipnext(node); }; var imscp_skipnext = function(node) { if (node.nextSibling) { return node.nextSibling; } else if (node.depth > 0) { return imscp_skipnext(node.parent); } return null; }; // Layout. Y.YUI2.widget.LayoutUnit.prototype.STR_COLLAPSE = M.util.get_string('hide', 'moodle'); Y.YUI2.widget.LayoutUnit.prototype.STR_EXPAND = M.util.get_string('show', 'moodle'); imscp_layout_widget = new Y.YUI2.widget.Layout('imscp_layout', { minWidth: 600, minHeight: 400, units: [ { position: 'left', body: 'imscp_toc', header: M.util.get_string('toc', 'imscp'), width: 250, resize: true, gutter: '2px 5px 5px 2px', collapse: true, minWidth:150}, { position: 'center', body: '
', gutter: '2px 5px 5px 2px', scroll: true} ] }); imscp_layout_widget.render(); var left = imscp_layout_widget.getUnitByPosition('left'); left.on('collapse', function() { imscp_resize_frame(); }); left.on('expand', function() { imscp_resize_frame(); }); // Ugly resizing hack that works around problems with resizing of iframes and objects. left._resize.on('startResize', function() { obj = Y.YUI2.util.Dom.get('imscp_object'); obj.style.display = 'none'; }); left._resize.on('endResize', function() { obj = Y.YUI2.util.Dom.get('imscp_object'); obj.style.display = 'block'; imscp_resize_frame(); }); // TOC tree. var tree = new Y.YUI2.widget.TreeView('imscp_tree'); tree.singleNodeHighlight = true; tree.subscribe('clickEvent', function(oArgs) { imscp_activate_item(oArgs.node); if (oArgs.node.children.length) { imscp_bloody_labelclick = true; } Y.YUI2.util.Event.preventDefault(oArgs.event); return false; }); tree.subscribe('collapse', function(node) { if (imscp_bloody_labelclick) { imscp_bloody_labelclick = false; return false; } }); tree.subscribe('expand', function(node) { if (imscp_bloody_labelclick) { imscp_bloody_labelclick = false; return false; } }); tree.expandAll(); tree.render(); var navbar = Y.YUI2.util.Dom.get('imscp_nav'); navbar.style.display = 'block'; // Navigation. imscp_buttons[0] = new Y.YUI2.widget.Button('nav_skipprev'); imscp_buttons[1] = new Y.YUI2.widget.Button('nav_prev'); imscp_buttons[2] = new Y.YUI2.widget.Button('nav_up'); imscp_buttons[3] = new Y.YUI2.widget.Button('nav_next'); imscp_buttons[4] = new Y.YUI2.widget.Button('nav_skipnext'); imscp_buttons[0].on('click', function(ev) { imscp_activate_item(imscp_skipprev(imscp_current_node)); }); imscp_buttons[1].on('click', function(ev) { imscp_activate_item(imscp_prev(imscp_current_node)); }); imscp_buttons[2].on('click', function(ev) { imscp_activate_item(imscp_up(imscp_current_node)); }); imscp_buttons[3].on('click', function(ev) { imscp_activate_item(imscp_next(imscp_current_node)); }); imscp_buttons[4].on('click', function(ev) { imscp_activate_item(imscp_skipnext(imscp_current_node)); }); // Finally activate the first item. imscp_activate_item(imscp_firstlinked(tree.getRoot().children[0])); // Resizing. imscp_resize_layout(false); // Fix layout if window resized. window.onresize = function() { imscp_resize_layout(true); }; }); };