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/* global ns */
/**
* Create a group of fields.
*
* @param {mixed} parent
* @param {object} field
* @param {mixed} params
* @param {function} setValue
* @returns {ns.Group}
*/
ns.Group = function (parent, field, params, setValue) {
// Support for events
H5P.EventDispatcher.call(this);
if (field.label === undefined) {
field.label = field.name;
}
else if (field.label === 0) {
field.label = '';
}
this.parent = parent;
this.passReadies = true;
this.params = params;
this.setValue = setValue;
this.library = parent.library + '/' + field.name;
if (field.deprecated !== undefined && field.deprecated) {
this.field = H5P.cloneObject(field, true);
var empties = 0;
for (var i = 0; i < this.field.fields.length; i++) {
var f = this.field.fields[i];
if (params !== undefined && params[f.name] === '') {
delete params[f.name];
}
if (params === undefined || params[f.name] === undefined) {
f.widget = 'none';
empties++;
}
}
if (i === empties) {
this.field.fields = [];
}
}
else {
this.field = field;
}
if (this.field.optional === true) {
// If this field is optional, make sure child fields are as well
for (var j = 0; j < this.field.fields.length; j++) {
this.field.fields[j].optional = true;
}
}
};
// Extends the event dispatcher
ns.Group.prototype = Object.create(H5P.EventDispatcher.prototype);
ns.Group.prototype.constructor = ns.Group;
/**
* Append group to its wrapper.
*
* @param {jQuery} $wrapper
* @returns {undefined}
*/
ns.Group.prototype.appendTo = function ($wrapper) {
var that = this;
if (this.field.fields.length === 0) {
// No fields or all are deprecated
this.setValue(this.field);
return;
}
// Add fieldset wrapper for group
this.$group = ns.$('<fieldset/>', {
'class': 'field group ' + H5PEditor.createImportance(this.field.importance) + ' field-name-' + this.field.name,
appendTo: $wrapper
});
// Add title expand/collapse button
this.$title = ns.$('<div/>', {
'class': 'title',
'aria-expanded': 'false',
title: ns.t('core', 'expandCollapse'),
role: 'button',
tabIndex: 0,
on: {
click: function () {
that.toggle();
},
keypress: function (event) {
if ((event.charCode || event.keyCode) === 32) {
that.toggle();
event.preventDefault();
}
}
},
appendTo: this.$group
});
// Add content container
this.$content = ns.$('<div/>', {
'class': 'content',
appendTo: this.$group
});
if (this.hasSingleChild() && !this.isSubContent()) {
this.$content.addClass('h5peditor-single');
this.children = [];
var field = this.field.fields[0];
var widget = field.widget === undefined ? field.type : field.widget;
this.children[0] = new ns.widgets[widget](this, field, this.params, function (field, value) {
that.setValue(that.field, value);
});
this.children[0].appendTo(this.$content);
}
else {
if (this.params === undefined) {
this.params = {};
this.setValue(this.field, this.params);
}
this.params = this.initSubContent(this.params);
ns.processSemanticsChunk(this.field.fields, this.params, this.$content, this);
}
// Set summary
this.findSummary();
// Check if group should be expanded.
// Default is to be collapsed unless explicity defined in semantics by optional attribute expanded
if (this.field.expanded === true) {
this.expand();
}
};
/**
* Return whether this group is Sub Content
*
* @private
* @return {boolean}
*/
ns.Group.prototype.hasSingleChild = function () {
return this.field.fields.length === 1;
};
/**
* Add generated 'subContentId' attribute, if group is "sub content (library-like embedded structure)"
*
* @param {object} params
*
* @private
* @return {object}
*/
ns.Group.prototype.initSubContent = function (params) {
// If group contains library-like sub content that needs UUIDs
if (this.isSubContent()) {
params['subContentId'] = params['subContentId'] || H5P.createUUID();
}
return params;
};
/**
* Return whether this group is Sub Content
*
* @private
* @return {boolean}
*/
ns.Group.prototype.isSubContent = function () {
return this.field.isSubContent === true;
};
/**
* Toggle expand/collapse for the given group.
*/
ns.Group.prototype.toggle = function () {
if (this.preventToggle) {
this.preventToggle = false;
return;
}
if (this.$group.hasClass('expanded')) {
this.collapse();
}
else {
this.expand();
}
};
/**
* Expand the given group.
*/
ns.Group.prototype.expand = function () {
this.$title.attr('aria-expanded', 'true');
// Set timeout is necessary because aria-expanded status is not announced
// when the :before element changes content because Firefox
// re-creates the accessible element..
// @see https://github.com/nvaccess/nvda/issues/8341
// Should be fixeed by Firefox 70 (https://bugzilla.mozilla.org/show_bug.cgi?id=686400)
setTimeout(function () {
this.trigger('expanded');
this.$group.addClass('expanded');
}.bind(this), 100);
};
/**
* Collapse the given group (if valid)
*/
ns.Group.prototype.collapse = function () {
// Do not collapse before valid!
var valid = true;
for (var i = 0; i < this.children.length; i++) {
if (this.children[i].validate() === false) {
valid = false;
}
}
if (valid) {
this.$title.attr('aria-expanded', 'false');
// Set timeout is necessary because aria-expanded status is not announced
// when the :before element changes content because Firefox
// re-creates the accessible element..
// @see https://github.com/nvaccess/nvda/issues/8341
// Should be fixeed by Firefox 70 (https://bugzilla.mozilla.org/show_bug.cgi?id=686400)
setTimeout(function () {
this.trigger('collapsed');
this.$group.removeClass('expanded');
}.bind(this), 100);
}
};
/**
* Find summary to display in group header.
*/
ns.Group.prototype.findSummary = function () {
var that = this;
var summary;
for (var j = 0; j < this.children.length; j++) {
var child = this.children[j];
if (child.field === undefined) {
continue;
}
var params = (that.hasSingleChild() && !that.isSubContent()) ? this.params : this.params[child.field.name];
var widget = ns.getWidgetName(child.field);
if (widget === 'text' || widget === 'html') {
if (params !== undefined && params !== '') {
summary = params.replace(/(<([^>]+)>)/ig, "");
}
child.$input.change(function () {
var params = (that.hasSingleChild() && !that.isSubContent()) ? that.params : that.params[child.field.name];
if (params !== undefined && params !== '') {
that.setSummary(params.replace(/(<([^>]+)>)/ig, ""));
}
});
break;
}
else if (widget === 'library') {
let lastLib;
if (child.params !== undefined) {
summary = child.$select.children(':selected').text();
if (child.params.metadata && child.params.metadata.title) {
// The given title usually makes more sense than the type name
summary = child.params.metadata.title + (!child.libraries || (child.libraries.length > 1 && child.params.metadata.title.indexOf(summary) === -1) ? ' (' + summary + ')' : '');
}
else if (!child.params.library) {
// Nothing selected
summary = that.field.label;
}
}
const setSummary = function () {
if (child.params && child.params.metadata && child.params.metadata.title) {
// The given title usually makes more sense than the type name
that.setSummary(child.params.metadata.title + (child.libraries.length > 1 && child.params.metadata.title.indexOf(lastLib.title) === -1 ? ' (' + lastLib.title + ')' : ''));
}
else {
that.setSummary(lastLib ? lastLib.title : that.field.label);
}
};
if (child.metadataForm) {
child.metadataForm.on('titlechange', setSummary);
}
child.change(function (library) {
lastLib = library;
setSummary();
if (child.metadataForm) {
// Update summary when metadata title changes
child.metadataForm.off('titlechange', setSummary);
child.metadataForm.on('titlechange', setSummary);
}
});
break;
}
}
this.setSummary(summary);
};
/**
* Set the given group summary.
*
* @param {string} summary
* @returns {undefined}
*/
ns.Group.prototype.setSummary = function (summary) {
var summaryText;
// Parse html
var summaryTextNode = ns.$.parseHTML(summary);
if (summaryTextNode !== null && summaryTextNode.length) {
summaryText = summaryTextNode[0].nodeValue;
}
// Make it possible for parent to monitor summary changes
this.trigger('summary', summaryText);
if (summaryText !== undefined) {
summaryText = (summaryText.length > 48 ? summaryText.substr(0, 45) + '...' : summaryText);
}
else {
summaryText = this.field.label;
}
this.$title.text(summaryText);
};
/**
* Validate all children.
*/
ns.Group.prototype.validate = function () {
var valid = true;
if (this.children !== undefined) {
for (var i = 0; i < this.children.length; i++) {
if (this.children[i].validate() === false) {
valid = false;
}
}
}
return valid;
};
/**
* Allows ancestors and widgets to do stuff with our children.
*
* @public
* @param {Function} task
*/
ns.Group.prototype.forEachChild = function (task) {
for (var i = 0; i < this.children.length; i++) {
task(this.children[i], i);
}
};
/**
* Collect functions to execute once the tree is complete.
*
* @param {function} ready
* @returns {undefined}
*/
ns.Group.prototype.ready = function (ready) {
this.parent.ready(ready);
};
/**
* Remove this item.
*/
ns.Group.prototype.remove = function () {
if (this.$group !== undefined) {
ns.removeChildren(this.children);
this.$group.remove();
}
};
/**
* Get a copy of the fields semantics used by this group.
* @return {Array}
*/
ns.Group.prototype.getFields = function () {
return H5PEditor.$.extend(true, [], this.field.fields);
};
/**
* When someone from the outside wants to set a value.
*
* @param {Object} value
*/
ns.Group.prototype.forceValue = function (value) {
for (let i = 0; i < this.children.length; i++) {
this.children[i].forceValue(value[this.children[i].field.name]);
}
};
// Tell the editor what widget we are.
ns.widgets.group = ns.Group;