Sindbad~EG File Manager
// 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 <http://www.gnu.org/licenses/>.
/**
* Data filter management.
*
* @module core/datafilter
* @copyright 2020 Andrew Nicols <andrew@nicols.co.uk>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
import CourseFilter from 'core/datafilter/filtertypes/courseid';
import GenericFilter from 'core/datafilter/filtertype';
import {get_strings as getStrings} from 'core/str';
import Notification from 'core/notification';
import Pending from 'core/pending';
import Selectors from 'core/datafilter/selectors';
import Templates from 'core/templates';
import CustomEvents from 'core/custom_interaction_events';
import jQuery from 'jquery';
export default class {
/**
* Initialise the filter on the element with the given filterSet and callback.
*
* @param {HTMLElement} filterSet The filter element.
* @param {Function} applyCallback Callback function when updateTableFromFilter
*/
constructor(filterSet, applyCallback) {
this.filterSet = filterSet;
this.applyCallback = applyCallback;
// Keep a reference to all of the active filters.
this.activeFilters = {
courseid: new CourseFilter('courseid', filterSet),
};
}
/**
* Initialise event listeners to the filter.
*/
init() {
// Add listeners for the main actions.
this.filterSet.querySelector(Selectors.filterset.region).addEventListener('click', e => {
if (e.target.closest(Selectors.filterset.actions.addRow)) {
e.preventDefault();
this.addFilterRow();
}
if (e.target.closest(Selectors.filterset.actions.applyFilters)) {
e.preventDefault();
this.updateTableFromFilter();
}
if (e.target.closest(Selectors.filterset.actions.resetFilters)) {
e.preventDefault();
this.removeAllFilters();
}
});
// Add the listener to remove a single filter.
this.filterSet.querySelector(Selectors.filterset.regions.filterlist).addEventListener('click', e => {
if (e.target.closest(Selectors.filter.actions.remove)) {
e.preventDefault();
this.removeOrReplaceFilterRow(e.target.closest(Selectors.filter.region), true);
}
});
// Add listeners for the filter type selection.
let filterRegion = jQuery(this.getFilterRegion());
CustomEvents.define(filterRegion, [CustomEvents.events.accessibleChange]);
filterRegion.on(CustomEvents.events.accessibleChange, e => {
const typeField = e.target.closest(Selectors.filter.fields.type);
if (typeField && typeField.value) {
const filter = e.target.closest(Selectors.filter.region);
this.addFilter(filter, typeField.value);
}
});
this.filterSet.querySelector(Selectors.filterset.fields.join).addEventListener('change', e => {
this.filterSet.dataset.filterverb = e.target.value;
});
}
/**
* Get the filter list region.
*
* @return {HTMLElement}
*/
getFilterRegion() {
return this.filterSet.querySelector(Selectors.filterset.regions.filterlist);
}
/**
* Add an unselected filter row.
*
* @return {Promise}
*/
addFilterRow() {
const pendingPromise = new Pending('core/datafilter:addFilterRow');
const rownum = 1 + this.getFilterRegion().querySelectorAll(Selectors.filter.region).length;
return Templates.renderForPromise('core/datafilter/filter_row', {"rownumber": rownum})
.then(({html, js}) => {
const newContentNodes = Templates.appendNodeContents(this.getFilterRegion(), html, js);
return newContentNodes;
})
.then(filterRow => {
// Note: This is a nasty hack.
// We should try to find a better way of doing this.
// We do not have the list of types in a readily consumable format, so we take the pre-rendered one and copy
// it in place.
const typeList = this.filterSet.querySelector(Selectors.data.typeList);
filterRow.forEach(contentNode => {
const contentTypeList = contentNode.querySelector(Selectors.filter.fields.type);
if (contentTypeList) {
contentTypeList.innerHTML = typeList.innerHTML;
}
});
return filterRow;
})
.then(filterRow => {
this.updateFiltersOptions();
return filterRow;
})
.then(result => {
pendingPromise.resolve();
return result;
})
.catch(Notification.exception);
}
/**
* Get the filter data source node fro the specified filter type.
*
* @param {String} filterType
* @return {HTMLElement}
*/
getFilterDataSource(filterType) {
const filterDataNode = this.filterSet.querySelector(Selectors.filterset.regions.datasource);
return filterDataNode.querySelector(Selectors.data.fields.byName(filterType));
}
/**
* Add a filter to the list of active filters, performing any necessary setup.
*
* @param {HTMLElement} filterRow
* @param {String} filterType
* @param {Array} initialFilterValues The initially selected values for the filter
* @returns {Filter}
*/
async addFilter(filterRow, filterType, initialFilterValues) {
// Name the filter on the filter row.
filterRow.dataset.filterType = filterType;
const filterDataNode = this.getFilterDataSource(filterType);
// Instantiate the Filter class.
let Filter = GenericFilter;
if (filterDataNode.dataset.filterTypeClass) {
Filter = await import(filterDataNode.dataset.filterTypeClass);
}
this.activeFilters[filterType] = new Filter(filterType, this.filterSet, initialFilterValues);
// Disable the select.
const typeField = filterRow.querySelector(Selectors.filter.fields.type);
typeField.value = filterType;
typeField.disabled = 'disabled';
// Update the list of available filter types.
this.updateFiltersOptions();
return this.activeFilters[filterType];
}
/**
* Get the registered filter class for the named filter.
*
* @param {String} name
* @return {Object} See the Filter class.
*/
getFilterObject(name) {
return this.activeFilters[name];
}
/**
* Remove or replace the specified filter row and associated class, ensuring that if there is only one filter row,
* that it is replaced instead of being removed.
*
* @param {HTMLElement} filterRow
* @param {Bool} refreshContent Whether to refresh the table content when removing
*/
removeOrReplaceFilterRow(filterRow, refreshContent) {
const filterCount = this.getFilterRegion().querySelectorAll(Selectors.filter.region).length;
if (filterCount === 1) {
this.replaceFilterRow(filterRow, refreshContent);
} else {
this.removeFilterRow(filterRow, refreshContent);
}
}
/**
* Remove the specified filter row and associated class.
*
* @param {HTMLElement} filterRow
* @param {Bool} refreshContent Whether to refresh the table content when removing
*/
async removeFilterRow(filterRow, refreshContent = true) {
const filterType = filterRow.querySelector(Selectors.filter.fields.type);
const hasFilterValue = !!filterType.value;
// Remove the filter object.
this.removeFilterObject(filterRow.dataset.filterType);
// Remove the actual filter HTML.
filterRow.remove();
// Update the list of available filter types.
this.updateFiltersOptions();
if (hasFilterValue && refreshContent) {
// Refresh the table if there was any content in this row.
this.updateTableFromFilter();
}
// Update filter fieldset legends.
const filterLegends = await this.getAvailableFilterLegends();
this.getFilterRegion().querySelectorAll(Selectors.filter.region).forEach((filterRow, index) => {
filterRow.querySelector('legend').innerText = filterLegends[index];
});
}
/**
* Replace the specified filter row with a new one.
*
* @param {HTMLElement} filterRow
* @param {Bool} refreshContent Whether to refresh the table content when removing
* @param {Number} rowNum The number used to label the filter fieldset legend (eg Row 1). Defaults to 1 (the first filter).
* @return {Promise}
*/
replaceFilterRow(filterRow, refreshContent = true, rowNum = 1) {
// Remove the filter object.
this.removeFilterObject(filterRow.dataset.filterType);
return Templates.renderForPromise('core/datafilter/filter_row', {"rownumber": rowNum})
.then(({html, js}) => {
const newContentNodes = Templates.replaceNode(filterRow, html, js);
return newContentNodes;
})
.then(filterRow => {
// Note: This is a nasty hack.
// We should try to find a better way of doing this.
// We do not have the list of types in a readily consumable format, so we take the pre-rendered one and copy
// it in place.
const typeList = this.filterSet.querySelector(Selectors.data.typeList);
filterRow.forEach(contentNode => {
const contentTypeList = contentNode.querySelector(Selectors.filter.fields.type);
if (contentTypeList) {
contentTypeList.innerHTML = typeList.innerHTML;
}
});
return filterRow;
})
.then(filterRow => {
this.updateFiltersOptions();
return filterRow;
})
.then(filterRow => {
// Refresh the table.
if (refreshContent) {
return this.updateTableFromFilter();
} else {
return filterRow;
}
})
.catch(Notification.exception);
}
/**
* Remove the Filter Object from the register.
*
* @param {string} filterName The name of the filter to be removed
*/
removeFilterObject(filterName) {
if (filterName) {
const filter = this.getFilterObject(filterName);
if (filter) {
filter.tearDown();
// Remove from the list of active filters.
delete this.activeFilters[filterName];
}
}
}
/**
* Remove all filters.
*
* @returns {Promise}
*/
removeAllFilters() {
const filters = this.getFilterRegion().querySelectorAll(Selectors.filter.region);
filters.forEach(filterRow => this.removeOrReplaceFilterRow(filterRow, false));
// Refresh the table.
return this.updateTableFromFilter();
}
/**
* Remove any empty filters.
*/
removeEmptyFilters() {
const filters = this.getFilterRegion().querySelectorAll(Selectors.filter.region);
filters.forEach(filterRow => {
const filterType = filterRow.querySelector(Selectors.filter.fields.type);
if (!filterType.value) {
this.removeOrReplaceFilterRow(filterRow, false);
}
});
}
/**
* Update the list of filter types to filter out those already selected.
*/
updateFiltersOptions() {
const filters = this.getFilterRegion().querySelectorAll(Selectors.filter.region);
filters.forEach(filterRow => {
const options = filterRow.querySelectorAll(Selectors.filter.fields.type + ' option');
options.forEach(option => {
if (option.value === filterRow.dataset.filterType) {
option.classList.remove('hidden');
option.disabled = false;
} else if (this.activeFilters[option.value]) {
option.classList.add('hidden');
option.disabled = true;
} else {
option.classList.remove('hidden');
option.disabled = false;
}
});
});
// Configure the state of the "Add row" button.
// This button is disabled when there is a filter row available for each condition.
const addRowButton = this.filterSet.querySelector(Selectors.filterset.actions.addRow);
const filterDataNode = this.filterSet.querySelectorAll(Selectors.data.fields.all);
if (filterDataNode.length <= filters.length) {
addRowButton.setAttribute('disabled', 'disabled');
} else {
addRowButton.removeAttribute('disabled');
}
if (filters.length === 1) {
this.filterSet.querySelector(Selectors.filterset.regions.filtermatch).classList.add('hidden');
this.filterSet.querySelector(Selectors.filterset.fields.join).value = 2;
this.filterSet.dataset.filterverb = 2;
} else {
this.filterSet.querySelector(Selectors.filterset.regions.filtermatch).classList.remove('hidden');
}
}
/**
* Update the Dynamic table based upon the current filter.
*/
updateTableFromFilter() {
const pendingPromise = new Pending('core/datafilter:updateTableFromFilter');
const filters = {};
Object.values(this.activeFilters).forEach(filter => {
filters[filter.filterValue.name] = filter.filterValue;
});
if (this.applyCallback) {
this.applyCallback(filters, pendingPromise);
}
}
/**
* Fetch the strings used to populate the fieldset legends for the maximum number of filters possible.
*
* @return {array}
*/
async getAvailableFilterLegends() {
const maxFilters = document.querySelector(Selectors.data.typeListSelect).length - 1;
let requests = [];
[...Array(maxFilters)].forEach((_, rowIndex) => {
requests.push({
"key": "filterrowlegend",
"component": "core",
// Add 1 since rows begin at 1 (index begins at zero).
"param": rowIndex + 1
});
});
const legendStrings = await getStrings(requests)
.then(fetchedStrings => {
return fetchedStrings;
})
.catch(Notification.exception);
return legendStrings;
}
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Sindbad File Manager Version 1.0, Coded By Sindbad EG ~ The Terrorists