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1030 lines
33 KiB
1030 lines
33 KiB
YUI.add('moodle-core-blocks', function (Y, NAME) {
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/* global MANAGER */
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/**
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* Provides drag and drop functionality for blocks.
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*
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* @module moodle-core-blockdraganddrop
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*/
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var AJAXURL = '/lib/ajax/blocks.php',
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CSS = {
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BLOCK: 'block',
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BLOCKREGION: 'block-region',
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BLOCKADMINBLOCK: 'block_adminblock',
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EDITINGMOVE: 'editing_move',
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HEADER: 'header',
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LIGHTBOX: 'lightbox',
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REGIONCONTENT: 'region-content',
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SKIPBLOCK: 'skip-block',
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SKIPBLOCKTO: 'skip-block-to',
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MYINDEX: 'page-my-index',
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REGIONMAIN: 'region-main',
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BLOCKSMOVING: 'blocks-moving'
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};
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var SELECTOR = {
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DRAGHANDLE: '.' + CSS.HEADER + ' .commands .moodle-core-dragdrop-draghandle'
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};
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/**
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* Legacy drag and drop manager.
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* This drag and drop manager is specifically designed for themes using side-pre and side-post
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* that do not make use of the block output methods introduced by MDL-39824.
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*
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* @namespace M.core.blockdraganddrop
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* @class LegacyManager
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* @constructor
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* @extends M.core.dragdrop
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*/
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var DRAGBLOCK = function() {
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DRAGBLOCK.superclass.constructor.apply(this, arguments);
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};
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Y.extend(DRAGBLOCK, M.core.dragdrop, {
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skipnodetop: null,
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skipnodebottom: null,
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dragsourceregion: null,
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initializer: function() {
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// Set group for parent class
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this.groups = ['block'];
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this.samenodeclass = CSS.BLOCK;
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this.parentnodeclass = CSS.REGIONCONTENT;
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// Add relevant classes and ID to 'content' block region on Dashboard page.
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var myhomecontent = Y.Node.all('body#' + CSS.MYINDEX + ' #' + CSS.REGIONMAIN + ' > .' + CSS.REGIONCONTENT);
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if (myhomecontent.size() > 0) {
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var contentregion = myhomecontent.item(0);
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contentregion.addClass(CSS.BLOCKREGION);
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contentregion.set('id', CSS.REGIONCONTENT);
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contentregion.one('div').addClass(CSS.REGIONCONTENT);
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}
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// Initialise blocks dragging
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// Find all block regions on the page
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var blockregionlist = Y.Node.all('div.' + CSS.BLOCKREGION);
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if (blockregionlist.size() === 0) {
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return false;
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}
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// See if we are missing either of block regions,
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// if yes we need to add an empty one to use as target
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if (blockregionlist.size() !== this.get('regions').length) {
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var blockregion = Y.Node.create('<div></div>')
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.addClass(CSS.BLOCKREGION);
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var regioncontent = Y.Node.create('<div></div>')
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.addClass(CSS.REGIONCONTENT);
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blockregion.appendChild(regioncontent);
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var pre = blockregionlist.filter('#region-pre');
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var post = blockregionlist.filter('#region-post');
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if (pre.size() === 0 && post.size() === 1) {
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// pre block is missing, instert it before post
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blockregion.setAttrs({id: 'region-pre'});
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post.item(0).insert(blockregion, 'before');
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blockregionlist.unshift(blockregion);
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} else if (post.size() === 0 && pre.size() === 1) {
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// post block is missing, instert it after pre
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blockregion.setAttrs({id: 'region-post'});
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pre.item(0).insert(blockregion, 'after');
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blockregionlist.push(blockregion);
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}
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}
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blockregionlist.each(function(blockregionnode) {
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// Setting blockregion as droptarget (the case when it is empty)
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// The region-post (the right one)
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// is very narrow, so add extra padding on the left to drop block on it.
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new Y.DD.Drop({
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node: blockregionnode.one('div.' + CSS.REGIONCONTENT),
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groups: this.groups,
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padding: '40 240 40 240'
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});
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// Make each div element in the list of blocks draggable
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var del = new Y.DD.Delegate({
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container: blockregionnode,
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nodes: '.' + CSS.BLOCK,
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target: true,
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handles: [SELECTOR.DRAGHANDLE],
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invalid: '.block-hider-hide, .block-hider-show, .moveto',
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dragConfig: {groups: this.groups}
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});
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del.dd.plug(Y.Plugin.DDProxy, {
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// Don't move the node at the end of the drag
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moveOnEnd: false
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});
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del.dd.plug(Y.Plugin.DDWinScroll);
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var blocklist = blockregionnode.all('.' + CSS.BLOCK);
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blocklist.each(function(blocknode) {
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var move = blocknode.one('a.' + CSS.EDITINGMOVE);
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if (move) {
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move.replace(this.get_drag_handle(move.getAttribute('title'), '', 'iconsmall', true));
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blocknode.one(SELECTOR.DRAGHANDLE).setStyle('cursor', 'move');
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}
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}, this);
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}, this);
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},
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get_block_id: function(node) {
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return Number(node.get('id').replace(/inst/i, ''));
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},
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get_block_region: function(node) {
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var region = node.ancestor('div.' + CSS.BLOCKREGION).get('id').replace(/region-/i, '');
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if (Y.Array.indexOf(this.get('regions'), region) === -1) {
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// Must be standard side-X
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if (window.right_to_left()) {
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if (region === 'post') {
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region = 'pre';
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} else if (region === 'pre') {
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region = 'post';
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}
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}
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return 'side-' + region;
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}
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// Perhaps custom region
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return region;
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},
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get_region_id: function(node) {
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return node.get('id').replace(/region-/i, '');
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},
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drag_start: function(e) {
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// Get our drag object
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var drag = e.target;
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// Store the parent node of original drag node (block)
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// we will need it later for show/hide empty regions
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this.dragsourceregion = drag.get('node').ancestor('div.' + CSS.BLOCKREGION);
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// Determine skipnodes and store them
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if (drag.get('node').previous() && drag.get('node').previous().hasClass(CSS.SKIPBLOCK)) {
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this.skipnodetop = drag.get('node').previous();
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}
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if (drag.get('node').next() && drag.get('node').next().hasClass(CSS.SKIPBLOCKTO)) {
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this.skipnodebottom = drag.get('node').next();
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}
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// Add the blocks-moving class so that the theme can respond if need be.
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Y.one('body').addClass(CSS.BLOCKSMOVING);
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},
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drop_over: function(e) {
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// Get a reference to our drag and drop nodes
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var drag = e.drag.get('node');
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var drop = e.drop.get('node');
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// We need to fix the case when parent drop over event has determined
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// 'goingup' and appended the drag node after admin-block.
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if (drop.hasClass(this.parentnodeclass) &&
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drop.one('.' + CSS.BLOCKADMINBLOCK) &&
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drop.one('.' + CSS.BLOCKADMINBLOCK).next('.' + CSS.BLOCK)) {
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drop.prepend(drag);
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}
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// Block is moved within the same region
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// stop here, no need to modify anything.
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if (this.dragsourceregion.contains(drop)) {
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return false;
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}
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// TODO: Hiding-displaying block region only works for base theme blocks
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// (region-pre, region-post) at the moment. It should be improved
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// to work with custom block regions as well.
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// TODO: Fix this for the case when user drag block towards empty section,
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// then the section appears, then user chnages his mind and moving back to
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// original section. The opposite section remains opened and empty.
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var documentbody = Y.one('body');
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// Moving block towards hidden region-content, display it
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var regionname = this.get_region_id(this.dragsourceregion);
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if (documentbody.hasClass('side-' + regionname + '-only')) {
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documentbody.removeClass('side-' + regionname + '-only');
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}
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// Moving from empty region-content towards the opposite one,
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// hide empty one (only for region-pre, region-post areas at the moment).
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regionname = this.get_region_id(drop.ancestor('div.' + CSS.BLOCKREGION));
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if (this.dragsourceregion.all('.' + CSS.BLOCK).size() === 0 &&
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this.dragsourceregion.get('id').match(/(region-pre|region-post)/i)) {
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if (!documentbody.hasClass('side-' + regionname + '-only')) {
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documentbody.addClass('side-' + regionname + '-only');
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}
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}
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},
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drag_end: function() {
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// clear variables
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this.skipnodetop = null;
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this.skipnodebottom = null;
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this.dragsourceregion = null;
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// Remove the blocks moving class once the drag-drop is over.
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Y.one('body').removeClass(CSS.BLOCKSMOVING);
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},
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drag_dropmiss: function(e) {
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// Missed the target, but we assume the user intended to drop it
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// on the last last ghost node location, e.drag and e.drop should be
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// prepared by global_drag_dropmiss parent so simulate drop_hit(e).
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this.drop_hit(e);
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},
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drop_hit: function(e) {
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var drag = e.drag;
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// Get a reference to our drag node
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var dragnode = drag.get('node');
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var dropnode = e.drop.get('node');
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// Amend existing skipnodes
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if (dragnode.previous() && dragnode.previous().hasClass(CSS.SKIPBLOCK)) {
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// the one that belongs to block below move below
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dragnode.insert(dragnode.previous(), 'after');
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}
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// Move original skipnodes
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if (this.skipnodetop) {
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dragnode.insert(this.skipnodetop, 'before');
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}
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if (this.skipnodebottom) {
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dragnode.insert(this.skipnodebottom, 'after');
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}
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// Add lightbox if it not there
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var lightbox = M.util.add_lightbox(Y, dragnode);
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// Prepare request parameters
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var params = {
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sesskey: M.cfg.sesskey,
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courseid: this.get('courseid'),
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pagelayout: this.get('pagelayout'),
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pagetype: this.get('pagetype'),
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subpage: this.get('subpage'),
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contextid: this.get('contextid'),
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action: 'move',
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bui_moveid: this.get_block_id(dragnode),
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bui_newregion: this.get_block_region(dropnode)
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};
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if (this.get('cmid')) {
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params.cmid = this.get('cmid');
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}
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if (dragnode.next('.' + this.samenodeclass) && !dragnode.next('.' + this.samenodeclass).hasClass(CSS.BLOCKADMINBLOCK)) {
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params.bui_beforeid = this.get_block_id(dragnode.next('.' + this.samenodeclass));
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}
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// Do AJAX request
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Y.io(M.cfg.wwwroot + AJAXURL, {
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method: 'POST',
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data: params,
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on: {
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start: function() {
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lightbox.show();
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},
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success: function(tid, response) {
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window.setTimeout(function() {
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lightbox.hide();
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}, 250);
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try {
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var responsetext = Y.JSON.parse(response.responseText);
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if (responsetext.error) {
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new M.core.ajaxException(responsetext);
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}
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} catch (e) {
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// Ignore.
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}
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},
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failure: function(tid, response) {
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this.ajax_failure(response);
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lightbox.hide();
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}
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},
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context: this
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});
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}
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}, {
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NAME: 'core-blocks-dragdrop',
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ATTRS: {
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courseid: {
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value: null
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},
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cmid: {
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value: null
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},
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contextid: {
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value: null
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},
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pagelayout: {
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value: null
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},
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pagetype: {
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value: null
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},
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subpage: {
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value: null
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},
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regions: {
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value: null
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}
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}
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});
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M.core = M.core || {};
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M.core.blockdraganddrop = M.core.blockdraganddrop || {};
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/**
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* True if the page is using the new blocks methods.
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* @private
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* @static
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* @property M.core.blockdraganddrop._isusingnewblocksmethod
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* @type Boolean
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* @default null
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*/
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M.core.blockdraganddrop._isusingnewblocksmethod = null;
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/**
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* Returns true if the page is using the new blocks methods.
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* @static
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* @method M.core.blockdraganddrop.is_using_blocks_render_method
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* @return Boolean
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*/
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M.core.blockdraganddrop.is_using_blocks_render_method = function() {
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if (this._isusingnewblocksmethod === null) {
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var goodregions = Y.all('.block-region[data-blockregion]').size();
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var allregions = Y.all('.block-region').size();
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this._isusingnewblocksmethod = (allregions === goodregions);
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if (goodregions > 0 && allregions > 0 && goodregions !== allregions) {
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}
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}
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return this._isusingnewblocksmethod;
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};
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/**
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* Initialises a drag and drop manager.
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* This should only ever be called once for a page.
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* @static
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* @method M.core.blockdraganddrop.init
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* @param {Object} params
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* @return Manager
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*/
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M.core.blockdraganddrop.init = function(params) {
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if (this.is_using_blocks_render_method()) {
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new MANAGER(params);
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} else {
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new DRAGBLOCK(params);
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}
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};
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/*
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* Legacy code to keep things working.
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*/
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M.core_blocks = M.core_blocks || {};
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M.core_blocks.init_dragdrop = function(params) {
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M.core.blockdraganddrop.init(params);
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};
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/* global BLOCKREGION, SELECTOR, AJAXURL */
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/**
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* This file contains the drag and drop manager class.
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*
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* Provides drag and drop functionality for blocks.
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*
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* @module moodle-core-blockdraganddrop
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*/
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/**
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* Constructs a new Block drag and drop manager.
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*
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* @namespace M.core.blockdraganddrop
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* @class Manager
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* @constructor
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* @extends M.core.dragdrop
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*/
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var MANAGER = function() {
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MANAGER.superclass.constructor.apply(this, arguments);
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};
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MANAGER.prototype = {
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/**
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* The skip block link from above the block being dragged while a drag is in progress.
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* Required by the M.core.dragdrop from whom this class extends.
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* @private
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* @property skipnodetop
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* @type Node
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* @default null
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*/
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skipnodetop: null,
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/**
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* The skip block link from below the block being dragged while a drag is in progress.
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* Required by the M.core.dragdrop from whom this class extends.
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* @private
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* @property skipnodebottom
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* @type Node
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* @default null
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*/
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skipnodebottom: null,
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/**
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* An associative object of regions and the
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* @property regionobjects
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* @type {Object} Primitive object mocking an associative array.
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* @type {BLOCKREGION} [regionname]* Each item uses the region name as the key with the value being
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* an instance of the BLOCKREGION class.
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*/
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regionobjects: {},
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/**
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* Called during the initialisation process of the object.
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* @method initializer
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*/
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initializer: function() {
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var regionnames = this.get('regions'),
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i = 0,
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region,
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regionname,
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dragdelegation;
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// Evil required by M.core.dragdrop.
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this.groups = ['block'];
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this.samenodeclass = CSS.BLOCK;
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this.parentnodeclass = CSS.BLOCKREGION;
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// Add relevant classes and ID to 'content' block region on Dashboard page.
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var myhomecontent = Y.Node.all('body#' + CSS.MYINDEX + ' #' + CSS.REGIONMAIN + ' > .' + CSS.REGIONCONTENT);
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if (myhomecontent.size() > 0) {
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var contentregion = myhomecontent.item(0);
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contentregion.addClass(CSS.BLOCKREGION);
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contentregion.set('id', CSS.REGIONCONTENT);
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contentregion.one('div').addClass(CSS.REGIONCONTENT);
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}
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for (i in regionnames) {
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regionname = regionnames[i];
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region = new BLOCKREGION({
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manager: this,
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region: regionname,
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node: Y.one('#block-region-' + regionname)
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});
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this.regionobjects[regionname] = region;
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// Setting blockregion as droptarget (the case when it is empty)
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// The region-post (the right one)
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// is very narrow, so add extra padding on the left to drop block on it.
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new Y.DD.Drop({
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node: region.get_droptarget(),
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groups: this.groups,
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padding: '40 240 40 240'
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});
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// Make each div element in the list of blocks draggable
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dragdelegation = new Y.DD.Delegate({
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container: region.get_droptarget(),
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nodes: '.' + CSS.BLOCK,
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target: true,
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handles: [SELECTOR.DRAGHANDLE],
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invalid: '.block-hider-hide, .block-hider-show, .moveto, .block_fake',
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dragConfig: {groups: this.groups}
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});
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dragdelegation.dd.plug(Y.Plugin.DDProxy, {
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// Don't move the node at the end of the drag
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moveOnEnd: false
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});
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dragdelegation.dd.plug(Y.Plugin.DDWinScroll);
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// On the DD Manager start operation, we enable all block regions so that they can be drop targets. This
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// must be done *before* drag:start but after dragging has been initialised.
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Y.DD.DDM.on('ddm:start', this.enable_all_regions, this);
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region.change_block_move_icons(this);
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}
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},
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/**
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* Returns the ID of the block the given node represents.
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* @method get_block_id
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* @param {Node} node
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* @return {int} The blocks ID in the database.
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*/
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get_block_id: function(node) {
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|
return Number(node.get('id').replace(/inst/i, ''));
|
|
},
|
|
|
|
/**
|
|
* Returns the block region that the node is part of or belonging to.
|
|
* @method get_block_region
|
|
* @param {Y.Node} node
|
|
* @return {string} The region name.
|
|
*/
|
|
get_block_region: function(node) {
|
|
if (!node.test('[data-blockregion]')) {
|
|
node = node.ancestor('[data-blockregion]');
|
|
}
|
|
return node.getData('blockregion');
|
|
},
|
|
|
|
/**
|
|
* Returns the BLOCKREGION instance that represents the block region the given node is part of.
|
|
* @method get_region_object
|
|
* @param {Y.Node} node
|
|
* @return {BLOCKREGION}
|
|
*/
|
|
get_region_object: function(node) {
|
|
return this.regionobjects[this.get_block_region(node)];
|
|
},
|
|
|
|
/**
|
|
* Enables all fo the regions so that they are all visible while dragging is occuring.
|
|
*
|
|
* @method enable_all_regions
|
|
*/
|
|
enable_all_regions: function() {
|
|
var groups = Y.DD.DDM.activeDrag.get('groups');
|
|
|
|
// As we're called by Y.DD.DDM, we can't be certain that the call
|
|
// relates specifically to a block drag/drop operation. Test
|
|
// whether the relevant group applies here.
|
|
if (!groups || Y.Array.indexOf(groups, 'block') === -1) {
|
|
return;
|
|
}
|
|
|
|
var i;
|
|
for (i in this.regionobjects) {
|
|
if (!this.regionobjects.hasOwnProperty(i)) {
|
|
continue;
|
|
}
|
|
this.regionobjects[i].enable();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Disables enabled regions if they contain no blocks.
|
|
* @method disable_regions_if_required
|
|
*/
|
|
disable_regions_if_required: function() {
|
|
var i = 0;
|
|
for (i in this.regionobjects) {
|
|
this.regionobjects[i].disable_if_required();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Called by M.core.dragdrop.global_drag_start when dragging starts.
|
|
* @method drag_start
|
|
* @param {Event} e
|
|
*/
|
|
drag_start: function(e) {
|
|
// Get our drag object
|
|
var drag = e.target;
|
|
|
|
// Store the parent node of original drag node (block)
|
|
// we will need it later for show/hide empty regions
|
|
|
|
// Determine skipnodes and store them
|
|
if (drag.get('node').previous() && drag.get('node').previous().hasClass(CSS.SKIPBLOCK)) {
|
|
this.skipnodetop = drag.get('node').previous();
|
|
}
|
|
if (drag.get('node').next() && drag.get('node').next().hasClass(CSS.SKIPBLOCKTO)) {
|
|
this.skipnodebottom = drag.get('node').next();
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Called by M.core.dragdrop.global_drop_over when something is dragged over a drop target.
|
|
* @method drop_over
|
|
* @param {Event} e
|
|
*/
|
|
drop_over: function(e) {
|
|
// Get a reference to our drag and drop nodes
|
|
var drag = e.drag.get('node');
|
|
var drop = e.drop.get('node');
|
|
|
|
// We need to fix the case when parent drop over event has determined
|
|
// 'goingup' and appended the drag node after admin-block.
|
|
if (drop.hasClass(CSS.REGIONCONTENT) &&
|
|
drop.one('.' + CSS.BLOCKADMINBLOCK) &&
|
|
drop.one('.' + CSS.BLOCKADMINBLOCK).next('.' + CSS.BLOCK)) {
|
|
drop.prepend(drag);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* Called by M.core.dragdrop.global_drop_end when a drop has been completed.
|
|
* @method drop_end
|
|
*/
|
|
drop_end: function() {
|
|
// Clear variables.
|
|
this.skipnodetop = null;
|
|
this.skipnodebottom = null;
|
|
this.disable_regions_if_required();
|
|
},
|
|
|
|
/**
|
|
* Called by M.core.dragdrop.global_drag_dropmiss when something has been dropped on a node that isn't contained by
|
|
* a drop target.
|
|
*
|
|
* @method drag_dropmiss
|
|
* @param {Event} e
|
|
*/
|
|
drag_dropmiss: function(e) {
|
|
// Missed the target, but we assume the user intended to drop it
|
|
// on the last ghost node location, e.drag and e.drop should be
|
|
// prepared by global_drag_dropmiss parent so simulate drop_hit(e).
|
|
this.drop_hit(e);
|
|
},
|
|
|
|
/**
|
|
* Called by M.core.dragdrop.global_drag_hit when something has been dropped on a drop target.
|
|
* @method drop_hit
|
|
* @param {Event} e
|
|
*/
|
|
drop_hit: function(e) {
|
|
// Get a reference to our drag node
|
|
var dragnode = e.drag.get('node');
|
|
var dropnode = e.drop.get('node');
|
|
|
|
// Amend existing skipnodes
|
|
if (dragnode.previous() && dragnode.previous().hasClass(CSS.SKIPBLOCK)) {
|
|
// the one that belongs to block below move below
|
|
dragnode.insert(dragnode.previous(), 'after');
|
|
}
|
|
// Move original skipnodes
|
|
if (this.skipnodetop) {
|
|
dragnode.insert(this.skipnodetop, 'before');
|
|
}
|
|
if (this.skipnodebottom) {
|
|
dragnode.insert(this.skipnodebottom, 'after');
|
|
}
|
|
|
|
// Add lightbox if it not there
|
|
var lightbox = M.util.add_lightbox(Y, dragnode);
|
|
|
|
// Prepare request parameters
|
|
var params = {
|
|
sesskey: M.cfg.sesskey,
|
|
courseid: this.get('courseid'),
|
|
pagelayout: this.get('pagelayout'),
|
|
pagetype: this.get('pagetype'),
|
|
subpage: this.get('subpage'),
|
|
contextid: this.get('contextid'),
|
|
action: 'move',
|
|
bui_moveid: this.get_block_id(dragnode),
|
|
bui_newregion: this.get_block_region(dropnode)
|
|
};
|
|
|
|
if (this.get('cmid')) {
|
|
params.cmid = this.get('cmid');
|
|
}
|
|
|
|
if (dragnode.next('.' + CSS.BLOCK) && !dragnode.next('.' + CSS.BLOCK).hasClass(CSS.BLOCKADMINBLOCK)) {
|
|
params.bui_beforeid = this.get_block_id(dragnode.next('.' + CSS.BLOCK));
|
|
}
|
|
|
|
// Do AJAX request
|
|
Y.io(M.cfg.wwwroot + AJAXURL, {
|
|
method: 'POST',
|
|
data: params,
|
|
on: {
|
|
start: function() {
|
|
lightbox.show();
|
|
},
|
|
success: function(tid, response) {
|
|
window.setTimeout(function() {
|
|
lightbox.hide();
|
|
}, 250);
|
|
try {
|
|
var responsetext = Y.JSON.parse(response.responseText);
|
|
if (responsetext.error) {
|
|
new M.core.ajaxException(responsetext);
|
|
}
|
|
} catch (e) {
|
|
// Ignore.
|
|
}
|
|
},
|
|
failure: function(tid, response) {
|
|
this.ajax_failure(response);
|
|
lightbox.hide();
|
|
},
|
|
complete: function() {
|
|
this.disable_regions_if_required();
|
|
}
|
|
},
|
|
context: this
|
|
});
|
|
}
|
|
};
|
|
Y.extend(MANAGER, M.core.dragdrop, MANAGER.prototype, {
|
|
NAME: 'core-blocks-dragdrop-manager',
|
|
ATTRS: {
|
|
/**
|
|
* The Course ID if there is one.
|
|
* @attribute courseid
|
|
* @type int|null
|
|
* @default null
|
|
*/
|
|
courseid: {
|
|
value: null
|
|
},
|
|
|
|
/**
|
|
* The Course Module ID if there is one.
|
|
* @attribute cmid
|
|
* @type int|null
|
|
* @default null
|
|
*/
|
|
cmid: {
|
|
value: null
|
|
},
|
|
|
|
/**
|
|
* The Context ID.
|
|
* @attribute contextid
|
|
* @type int|null
|
|
* @default null
|
|
*/
|
|
contextid: {
|
|
value: null
|
|
},
|
|
|
|
/**
|
|
* The current page layout.
|
|
* @attribute pagelayout
|
|
* @type string|null
|
|
* @default null
|
|
*/
|
|
pagelayout: {
|
|
value: null
|
|
},
|
|
|
|
/**
|
|
* The page type string, should be used as the id for the body tag in the theme.
|
|
* @attribute pagetype
|
|
* @type string|null
|
|
* @default null
|
|
*/
|
|
pagetype: {
|
|
value: null
|
|
},
|
|
|
|
/**
|
|
* The subpage identifier, if any.
|
|
* @attribute subpage
|
|
* @type string|null
|
|
* @default null
|
|
*/
|
|
subpage: {
|
|
value: null
|
|
},
|
|
|
|
/**
|
|
* An array of block regions that are present on the page.
|
|
* @attribute regions
|
|
* @type array|null
|
|
* @default Array[]
|
|
*/
|
|
regions: {
|
|
value: []
|
|
}
|
|
}
|
|
});
|
|
/* global MANAGER */
|
|
|
|
/**
|
|
* This file contains the Block Region class used by the drag and drop manager.
|
|
*
|
|
* Provides drag and drop functionality for blocks.
|
|
*
|
|
* @module moodle-core-blockdraganddrop
|
|
*/
|
|
|
|
/**
|
|
* Constructs a new block region object.
|
|
*
|
|
* @namespace M.core.blockdraganddrop
|
|
* @class BlockRegion
|
|
* @constructor
|
|
* @extends Base
|
|
*/
|
|
var BLOCKREGION = function() {
|
|
BLOCKREGION.superclass.constructor.apply(this, arguments);
|
|
};
|
|
BLOCKREGION.prototype = {
|
|
/**
|
|
* Called during the initialisation process of the object.
|
|
* @method initializer
|
|
*/
|
|
initializer: function() {
|
|
var node = this.get('node');
|
|
if (!node) {
|
|
node = this.create_and_add_node();
|
|
}
|
|
var body = Y.one('body'),
|
|
hasblocks = node.all('.' + CSS.BLOCK).size() > 0,
|
|
hasregionclass = this.get_has_region_class();
|
|
this.set('hasblocks', hasblocks);
|
|
if (!body.hasClass(hasregionclass)) {
|
|
body.addClass(hasregionclass);
|
|
}
|
|
body.addClass((hasblocks) ? this.get_used_region_class() : this.get_empty_region_class());
|
|
body.removeClass((hasblocks) ? this.get_empty_region_class() : this.get_used_region_class());
|
|
},
|
|
/**
|
|
* Creates a generic block region node and adds it to the DOM at the best guess location.
|
|
* Any calling of this method is an unfortunate circumstance.
|
|
* @method create_and_add_node
|
|
* @return Node The newly created Node
|
|
*/
|
|
create_and_add_node: function() {
|
|
var c = Y.Node.create,
|
|
region = this.get('region'),
|
|
node = c('<div id="block-region-' + region + '" data-droptarget="1"></div>')
|
|
.addClass(CSS.BLOCKREGION)
|
|
.setData('blockregion', region),
|
|
regions = this.get('manager').get('regions'),
|
|
i,
|
|
haspre = false,
|
|
haspost = false,
|
|
added = false,
|
|
pre,
|
|
post;
|
|
|
|
for (i in regions) {
|
|
if (regions[i].match(/(pre|left)/)) {
|
|
haspre = regions[i];
|
|
} else if (regions[i].match(/(post|right)/)) {
|
|
haspost = regions[i];
|
|
}
|
|
}
|
|
|
|
if (haspre !== false && haspost !== false) {
|
|
if (region === haspre) {
|
|
post = Y.one('#block-region-' + haspost);
|
|
if (post) {
|
|
post.insert(node, 'before');
|
|
added = true;
|
|
}
|
|
} else {
|
|
pre = Y.one('#block-region-' + haspre);
|
|
if (pre) {
|
|
pre.insert(node, 'after');
|
|
added = true;
|
|
}
|
|
}
|
|
}
|
|
if (added === false) {
|
|
Y.one('body').append(node);
|
|
}
|
|
this.set('node', node);
|
|
|
|
return node;
|
|
},
|
|
|
|
/**
|
|
* Change the move icons to enhanced drag handles and changes the cursor to a move icon when over the header.
|
|
* @param M.core.dragdrop the block manager
|
|
* @method change_block_move_icons
|
|
*/
|
|
change_block_move_icons: function(manager) {
|
|
var handle;
|
|
this.get('node').all('.' + CSS.BLOCK + ' a.' + CSS.EDITINGMOVE).each(function(moveicon) {
|
|
moveicon.setStyle('cursor', 'move');
|
|
handle = manager.get_drag_handle(moveicon.getAttribute('title'), '', 'icon', true);
|
|
moveicon.replace(handle);
|
|
});
|
|
},
|
|
|
|
/**
|
|
* Returns the class name on the body that signifies the document knows about this region.
|
|
* @method get_has_region_class
|
|
* @return String
|
|
*/
|
|
get_has_region_class: function() {
|
|
return 'has-region-' + this.get('region');
|
|
},
|
|
|
|
/**
|
|
* Returns the class name to use on the body if the region contains no blocks.
|
|
* @method get_empty_region_class
|
|
* @return String
|
|
*/
|
|
get_empty_region_class: function() {
|
|
return 'empty-region-' + this.get('region');
|
|
},
|
|
|
|
/**
|
|
* Returns the class name to use on the body if the region contains blocks.
|
|
* @method get_used_region_class
|
|
* @return String
|
|
*/
|
|
get_used_region_class: function() {
|
|
return 'used-region-' + this.get('region');
|
|
},
|
|
|
|
/**
|
|
* Returns the node to use as the drop target for this region.
|
|
* @method get_droptarget
|
|
* @return Node
|
|
*/
|
|
get_droptarget: function() {
|
|
var node = this.get('node');
|
|
if (node.test('[data-droptarget="1"]')) {
|
|
return node;
|
|
}
|
|
return node.one('[data-droptarget="1"]');
|
|
},
|
|
|
|
/**
|
|
* Enables the block region so that we can be sure the user can see it.
|
|
* This is done even if it is empty.
|
|
* @method enable
|
|
*/
|
|
enable: function() {
|
|
Y.one('body').addClass(this.get_used_region_class()).removeClass(this.get_empty_region_class());
|
|
},
|
|
|
|
/**
|
|
* Disables the region if it contains no blocks, essentially hiding it from the user.
|
|
* @method disable_if_required
|
|
*/
|
|
disable_if_required: function() {
|
|
if (this.get('node').all('.' + CSS.BLOCK).size() === 0) {
|
|
Y.one('body').addClass(this.get_empty_region_class()).removeClass(this.get_used_region_class());
|
|
}
|
|
}
|
|
};
|
|
Y.extend(BLOCKREGION, Y.Base, BLOCKREGION.prototype, {
|
|
NAME: 'core-blocks-dragdrop-blockregion',
|
|
ATTRS: {
|
|
|
|
/**
|
|
* The drag and drop manager that created this block region instance.
|
|
* @attribute manager
|
|
* @type M.core.blockdraganddrop.Manager
|
|
* @writeOnce
|
|
*/
|
|
manager: {
|
|
// Can only be set during initialisation and must be set then.
|
|
writeOnce: 'initOnly',
|
|
validator: function(value) {
|
|
return Y.Lang.isObject(value) && value instanceof MANAGER;
|
|
}
|
|
},
|
|
|
|
/**
|
|
* The name of the block region this object represents.
|
|
* @attribute region
|
|
* @type String
|
|
* @writeOnce
|
|
*/
|
|
region: {
|
|
// Can only be set during initialisation and must be set then.
|
|
writeOnce: 'initOnly',
|
|
validator: function(value) {
|
|
return Y.Lang.isString(value);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* The node the block region HTML starts at.s
|
|
* @attribute region
|
|
* @type Y.Node
|
|
*/
|
|
node: {
|
|
validator: function(value) {
|
|
return Y.Lang.isObject(value) || Y.Lang.isNull(value);
|
|
}
|
|
},
|
|
|
|
/**
|
|
* True if the block region currently contains blocks.
|
|
* @attribute hasblocks
|
|
* @type Boolean
|
|
* @default false
|
|
*/
|
|
hasblocks: {
|
|
value: false,
|
|
validator: function(value) {
|
|
return Y.Lang.isBoolean(value);
|
|
}
|
|
}
|
|
}
|
|
});
|
|
|
|
|
|
}, '@VERSION@', {
|
|
"requires": [
|
|
"base",
|
|
"node",
|
|
"io",
|
|
"dom",
|
|
"dd",
|
|
"dd-scroll",
|
|
"moodle-core-dragdrop",
|
|
"moodle-core-notification"
|
|
]
|
|
});
|
|
|