Proyectos de Subversion Moodle

/**

 * Resource drag and drop.

 *

 * @class M.course.dragdrop.resource

 * @constructor

 * @extends M.core.dragdrop

 */

var DRAGRESOURCE = function() {

    DRAGRESOURCE.superclass.constructor.apply(this, arguments);

};

Y.extend(DRAGRESOURCE, M.core.dragdrop, {

    initializer: function() {

        // Set group for parent class

        this.groups = ['resource'];

        this.samenodeclass = CSS.ACTIVITY;

        this.parentnodeclass = CSS.SECTION;

        this.samenodelabel = {

            identifier: 'afterresource',

            component: 'moodle'

        };

        this.parentnodelabel = {

            identifier: 'totopofsection',

            component: 'moodle'

        };

        // Go through all sections

        var sectionlistselector = M.course.format.get_section_selector(Y);

        if (sectionlistselector) {

            sectionlistselector = '.' + CSS.COURSECONTENT + ' ' + sectionlistselector;

            this.setup_for_section(sectionlistselector);

            // Initialise drag & drop for all resources/activities

            var nodeselector = sectionlistselector.slice(CSS.COURSECONTENT.length + 2) + ' li.' + CSS.ACTIVITY;

            var del = new Y.DD.Delegate({

                container: '.' + CSS.COURSECONTENT,

                nodes: nodeselector,

                target: true,

                handles: ['.' + CSS.EDITINGMOVE],

                dragConfig: {groups: this.groups}

            });

            del.dd.plug(Y.Plugin.DDProxy, {

                // Don't move the node at the end of the drag

                moveOnEnd: false,

                cloneNode: true

            });

            del.dd.plug(Y.Plugin.DDConstrained, {

                // Keep it inside the .course-content

                constrain: '#' + CSS.PAGECONTENT

            });

            del.dd.plug(Y.Plugin.DDWinScroll);

            M.course.coursebase.register_module(this);

            M.course.dragres = this;

        }

    },

    /**

     * Apply dragdrop features to the specified selector or node that refers to section(s)

     *

     * @method setup_for_section

     * @param {String} baseselector The CSS selector or node to limit scope to

     */

    setup_for_section: function(baseselector) {

        Y.Node.all(baseselector).each(function(sectionnode) {

            var resources = sectionnode.one('.' + CSS.CONTENT + ' ul.' + CSS.SECTION);

            // See if resources ul exists, if not create one

            if (!resources) {

                resources = Y.Node.create('<ul></ul>');

                resources.addClass(CSS.SECTION);

                sectionnode.one('.' + CSS.CONTENT + ' div.' + CSS.SUMMARY).insert(resources, 'after');

            }

            resources.setAttribute('data-draggroups', this.groups.join(' '));

            // Define empty ul as droptarget, so that item could be moved to empty list

            new Y.DD.Drop({

                node: resources,

                groups: this.groups,

                padding: '20 0 20 0'

            });

            // Initialise each resource/activity in this section

            this.setup_for_resource('#' + sectionnode.get('id') + ' li.' + CSS.ACTIVITY);

        }, this);

    },

    /**

     * Apply dragdrop features to the specified selector or node that refers to resource(s)

     *

     * @method setup_for_resource

     * @param {String} baseselector The CSS selector or node to limit scope to

     */

    setup_for_resource: function(baseselector) {

        Y.Node.all(baseselector).each(function(resourcesnode) {

            var draggroups = resourcesnode.getData('draggroups');

            if (!draggroups) {

                // This Drop Node has not been set up. Configure it now.

                resourcesnode.setAttribute('data-draggroups', this.groups.join(' '));

                // Define empty ul as droptarget, so that item could be moved to empty list

                new Y.DD.Drop({

                    node: resourcesnode,

                    groups: this.groups,

                    padding: '20 0 20 0'

                });

            }

            // Replace move icons

            var move = resourcesnode.one('a.' + CSS.EDITINGMOVE);

            if (move) {

                var sr = move.getData('sectionreturn');

                move.replace(this.get_drag_handle(M.util.get_string('movecoursemodule', 'moodle'),

                             CSS.EDITINGMOVE, CSS.ICONCLASS, true).setAttribute('data-sectionreturn', sr));

            }

        }, this);

    },

    drag_start: function(e) {

        // Get our drag object

        var drag = e.target;

        if (drag.get('dragNode') === drag.get('node')) {

            // We do not want to modify the contents of the real node.

            // They will be the same during a keyboard drag and drop.

            return;

        }

        drag.get('dragNode').setContent(drag.get('node').get('innerHTML'));

        drag.get('dragNode').all('img.iconsmall').setStyle('vertical-align', 'baseline');

    },

    drag_dropmiss: function(e) {

        // Missed the target, but we assume the user intended to drop it

        // on the last 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);

    },

    drop_hit: function(e) {

        var drag = e.drag;

        // Get a reference to our drag node

        var dragnode = drag.get('node');

        var dropnode = e.drop.get('node');

        // Add spinner if it not there

        var actionarea = dragnode.one(CSS.ACTIONAREA);

        var spinner = M.util.add_spinner(Y, actionarea);

        var params = {};

        // Handle any variables which we must pass back through to

        var pageparams = this.get('config').pageparams;

        var varname;

        for (varname in pageparams) {

            params[varname] = pageparams[varname];

        }

        // Variables needed to update the course state.

        var cmid = Number(Y.Moodle.core_course.util.cm.getId(dragnode));

        var beforeid = null;

        // Prepare request parameters

        params.sesskey = M.cfg.sesskey;

        params.courseId = this.get('courseid');

        params['class'] = 'resource';

        params.field = 'move';

        params.id = cmid;

        params.sectionId = Y.Moodle.core_course.util.section.getId(dropnode.ancestor(M.course.format.get_section_wrapper(Y), true));

        if (dragnode.next()) {

            beforeid = Number(Y.Moodle.core_course.util.cm.getId(dragnode.next()));

            params.beforeId = beforeid;

        }

        // Do AJAX request

        var uri = M.cfg.wwwroot + this.get('ajaxurl');

        Y.io(uri, {

            method: 'POST',

            data: params,

            on: {

                start: function() {

                    this.lock_drag_handle(drag, CSS.EDITINGMOVE);

                    spinner.show();

                },

                success: function(tid, response) {

                    var responsetext = Y.JSON.parse(response.responseText);

                    // Update course state.

                    M.course.coursebase.invoke_function(

                        'updateMovedCmState',

                        {

                            cmid: cmid,

                            beforeid: beforeid,

                            visible: responsetext.visible,

                        }

                    );

                    // Set visibility in course content.

                    var params = {element: dragnode, visible: responsetext.visible};

                    M.course.coursebase.invoke_function('set_visibility_resource_ui', params);

                    this.unlock_drag_handle(drag, CSS.EDITINGMOVE);

                    window.setTimeout(function() {

                        spinner.hide();

                    }, 250);

                },

                failure: function(tid, response) {

                    this.ajax_failure(response);

                    this.unlock_drag_handle(drag, CSS.SECTIONHANDLE);

                    spinner.hide();

                    // TODO: revert nodes location

                }

            },

            context: this

        });

    }

}, {

    NAME: 'course-dragdrop-resource',

    ATTRS: {

        courseid: {

            value: null

        },

        ajaxurl: {

            value: 0

        },

        config: {

            value: 0

        }

    }

});

M.course = M.course || {};

M.course.init_resource_dragdrop = function(params) {

    new DRAGRESOURCE(params);

};