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/**
* This file contains JS functionality required by mforms and is included automatically
* when required.
*/
// Namespace for the form bits and bobs
M.form = M.form || {};
if (typeof M.form.dependencyManager === 'undefined') {
var dependencyManager = function() {
dependencyManager.superclass.constructor.apply(this, arguments);
};
Y.extend(dependencyManager, Y.Base, {
_locks: null,
_hides: null,
_dirty: null,
_nameCollections: null,
_fileinputs: null,
initializer: function() {
// Setup initial values for complex properties.
this._locks = {};
this._hides = {};
this._dirty = {};
// Setup event handlers.
Y.Object.each(this.get('dependencies'), function(value, i) {
var elements = this.elementsByName(i);
elements.each(function(node) {
var nodeName = node.get('nodeName').toUpperCase();
if (nodeName == 'INPUT') {
if (node.getAttribute('type').match(/^(button|submit|radio|checkbox)$/)) {
node.on('click', this.updateEventDependencies, this);
} else {
node.on('blur', this.updateEventDependencies, this);
}
node.on('change', this.updateEventDependencies, this);
} else if (nodeName == 'SELECT') {
node.on('change', this.updateEventDependencies, this);
} else {
node.on('click', this.updateEventDependencies, this);
node.on('blur', this.updateEventDependencies, this);
node.on('change', this.updateEventDependencies, this);
}
}, this);
}, this);
// Handle the reset button.
this.get('form').get('elements').each(function(input) {
if (input.getAttribute('type') == 'reset') {
input.on('click', function() {
this.get('form').reset();
this.updateAllDependencies();
}, this);
}
}, this);
this.updateAllDependencies();
},
/**
* Initializes the mapping from element name to YUI NodeList
*/
initElementsByName: function() {
var names = {}; // Form elements with a given name.
var allnames = {}; // Form elements AND outer elements for groups with a given name.
// Collect element names.
Y.Object.each(this.get('dependencies'), function(conditions, i) {
names[i] = new Y.NodeList();
allnames[i] = new Y.NodeList();
for (var condition in conditions) {
for (var value in conditions[condition]) {
for (var hide in conditions[condition][value]) {
for (var ei in conditions[condition][value][hide]) {
names[conditions[condition][value][hide][ei]] = new Y.NodeList();
allnames[conditions[condition][value][hide][ei]] = new Y.NodeList();
}
}
}
}
});
// Locate elements for each name.
this.get('form').get('elements').each(function(node) {
var name = node.getAttribute('name');
if (({}).hasOwnProperty.call(names, name)) {
names[name].push(node);
allnames[name].push(node);
}
});
// Locate any groups with the given name.
this.get('form').all('.fitem').each(function(node) {
var name = node.getData('groupname');
if (name && ({}).hasOwnProperty.call(allnames, name)) {
allnames[name].push(node);
}
});
this._nameCollections = {names: names, allnames: allnames};
},
/**
* Gets all elements in the form by their name and returns
* a YUI NodeList
*
* @param {String} name The form element name.
* @param {Boolean} includeGroups (optional - default false) Should the outer element for groups be included?
* @return {Y.NodeList}
*/
elementsByName: function(name, includeGroups) {
if (includeGroups === undefined) {
includeGroups = false;
}
var collection = (includeGroups ? 'allnames' : 'names');
if (!this._nameCollections) {
this.initElementsByName();
}
if (!({}).hasOwnProperty.call(this._nameCollections[collection], name)) {
return new Y.NodeList();
}
return this._nameCollections[collection][name];
},
/**
* Checks the dependencies the form has an makes any changes to the
* form that are required.
*
* Changes are made by functions title _dependency{Dependencytype}
* and more can easily be introduced by defining further functions.
*
* @param {EventFacade | null} e The event, if any.
* @param {String} dependon The form element name to check dependencies against.
* @return {Boolean}
*/
checkDependencies: function(e, dependon) {
var dependencies = this.get('dependencies'),
tohide = {},
tolock = {},
condition, value, isHide, lock, hide,
checkfunction, result, elements;
if (!({}).hasOwnProperty.call(dependencies, dependon)) {
return true;
}
elements = this.elementsByName(dependon);
for (condition in dependencies[dependon]) {
for (value in dependencies[dependon][condition]) {
for (isHide in dependencies[dependon][condition][value]) {
checkfunction = '_dependency' + condition[0].toUpperCase() + condition.slice(1);
if (Y.Lang.isFunction(this[checkfunction])) {
result = this[checkfunction].apply(this, [elements, value, (isHide === "1"), e]);
} else {
result = this._dependencyDefault(elements, value, (isHide === "1"), e);
}
lock = result.lock || false;
hide = result.hide || false;
for (var ei in dependencies[dependon][condition][value][isHide]) {
var eltolock = dependencies[dependon][condition][value][isHide][ei];
if (({}).hasOwnProperty.call(tohide, eltolock)) {
tohide[eltolock] = tohide[eltolock] || hide;
} else {
tohide[eltolock] = hide;
}
if (({}).hasOwnProperty.call(tolock, eltolock)) {
tolock[eltolock] = tolock[eltolock] || lock;
} else {
tolock[eltolock] = lock;
}
}
}
}
}
for (var el in tolock) {
var needsupdate = false;
if (!({}).hasOwnProperty.call(this._locks, el)) {
this._locks[el] = {};
}
if (({}).hasOwnProperty.call(tolock, el) && tolock[el]) {
if (!({}).hasOwnProperty.call(this._locks[el], dependon) || this._locks[el][dependon]) {
this._locks[el][dependon] = true;
needsupdate = true;
}
} else if (({}).hasOwnProperty.call(this._locks[el], dependon) && this._locks[el][dependon]) {
delete this._locks[el][dependon];
needsupdate = true;
}
if (!({}).hasOwnProperty.call(this._hides, el)) {
this._hides[el] = {};
}
if (({}).hasOwnProperty.call(tohide, el) && tohide[el]) {
if (!({}).hasOwnProperty.call(this._hides[el], dependon) || this._hides[el][dependon]) {
this._hides[el][dependon] = true;
needsupdate = true;
}
} else if (({}).hasOwnProperty.call(this._hides[el], dependon) && this._hides[el][dependon]) {
delete this._hides[el][dependon];
needsupdate = true;
}
if (needsupdate) {
this._dirty[el] = true;
}
}
return true;
},
/**
* Update all dependencies in form
*/
updateAllDependencies: function() {
Y.Object.each(this.get('dependencies'), function(value, name) {
this.checkDependencies(null, name);
}, this);
this.updateForm();
},
/**
* Update dependencies associated with event
*
* @param {Event} e The event.
*/
updateEventDependencies: function(e) {
var el = e.target.getAttribute('name');
this.checkDependencies(e, el);
this.updateForm();
},
/**
* Flush pending changes to the form
*/
updateForm: function() {
var el;
for (el in this._dirty) {
if (({}).hasOwnProperty.call(this._locks, el)) {
this._disableElement(el, !Y.Object.isEmpty(this._locks[el]));
}
if (({}).hasOwnProperty.call(this._hides, el)) {
this._hideElement(el, !Y.Object.isEmpty(this._hides[el]));
}
}
this._dirty = {};
},
/**
* Disables or enables all form elements with the given name
*
* @param {String} name The form element name.
* @param {Boolean} disabled True to disable, false to enable.
*/
_disableElement: function(name, disabled) {
var els = this.elementsByName(name),
filepicker = this.isFilePicker(name),
editors = this.get('form').all('.fitem [data-fieldtype="editor"] textarea[name="' + name + '[text]"]');
els.each(function(node) {
if (disabled) {
node.setAttribute('disabled', 'disabled');
} else {
node.removeAttribute('disabled');
}
// Extra code to disable filepicker or filemanager form elements
if (filepicker) {
var fitem = node.ancestor('.fitem');
if (fitem) {
if (disabled) {
fitem.addClass('disabled');
} else {
fitem.removeClass('disabled');
}
}
}
});
editors.each(function(editor) {
if (disabled) {
editor.setAttribute('readonly', 'readonly');
} else {
editor.removeAttribute('readonly', 'readonly');
}
editor.getDOMNode().dispatchEvent(new Event('form:editorUpdated'));
});
},
/**
* Hides or shows all form elements with the given name.
*
* @param {String} name The form element name.
* @param {Boolean} hidden True to hide, false to show.
*/
_hideElement: function(name, hidden) {
var els = this.elementsByName(name, true);
els.each(function(node) {
var e = node.ancestor('.fitem', true);
var label = null,
id = null;
if (e) {
// Cope with differences between clean and boost themes.
if (e.hasClass('fitem_fgroup')) {
// Items within groups are not wrapped in div.fitem in theme_clean, so
// we need to hide the input, not the div.fitem.
e = node;
}
if (hidden) {
e.setAttribute('hidden', 'hidden');
} else {
e.removeAttribute('hidden');
}
e.setStyles({
display: (hidden) ? 'none' : ''
});
// Hide/unhide the label as well.
id = node.get('id');
if (id) {
label = Y.all('label[for="' + id + '"]');
if (label) {
if (hidden) {
label.setAttribute('hidden', 'hidden');
} else {
label.removeAttribute('hidden');
}
label.setStyles({
display: (hidden) ? 'none' : ''
});
}
}
}
});
},
/**
* Is the form element inside a filepicker or filemanager?
*
* @param {String} el The form element name.
* @return {Boolean}
*/
isFilePicker: function(el) {
if (!this._fileinputs) {
var fileinputs = {};
var selector = '.fitem [data-fieldtype="filepicker"] input,.fitem [data-fieldtype="filemanager"] input';
var els = this.get('form').all(selector);
els.each(function(node) {
fileinputs[node.getAttribute('name')] = true;
});
this._fileinputs = fileinputs;
}
if (({}).hasOwnProperty.call(this._fileinputs, el)) {
return this._fileinputs[el] || false;
}
return false;
},
_dependencyNotchecked: function(elements, value, isHide) {
var lock = false;
elements.each(function() {
if (this.getAttribute('type').toLowerCase() == 'hidden' &&
!this.siblings('input[type=checkbox][name="' + this.get('name') + '"]').isEmpty()) {
// This is the hidden input that is part of an advcheckbox.
return;
}
if (this.getAttribute('type').toLowerCase() == 'radio' && this.get('value') != value) {
return;
}
lock = lock || !Y.Node.getDOMNode(this).checked;
});
return {
lock: lock,
hide: isHide ? lock : false
};
},
_dependencyChecked: function(elements, value, isHide) {
var lock = false;
elements.each(function() {
if (this.getAttribute('type').toLowerCase() == 'hidden' &&
!this.siblings('input[type=checkbox][name="' + this.get('name') + '"]').isEmpty()) {
// This is the hidden input that is part of an advcheckbox.
return;
}
if (this.getAttribute('type').toLowerCase() == 'radio' && this.get('value') != value) {
return;
}
lock = lock || Y.Node.getDOMNode(this).checked;
});
return {
lock: lock,
hide: isHide ? lock : false
};
},
_dependencyNoitemselected: function(elements, value, isHide) {
var lock = false;
elements.each(function() {
lock = lock || this.get('selectedIndex') == -1;
});
return {
lock: lock,
hide: isHide ? lock : false
};
},
_dependencyEq: function(elements, value, isHide) {
var lock = false;
var hiddenVal = false;
var options, v, selected, values;
elements.each(function() {
if (this.getAttribute('type').toLowerCase() == 'radio' && !Y.Node.getDOMNode(this).checked) {
return;
} else if (this.getAttribute('type').toLowerCase() == 'hidden' &&
!this.siblings('input[type=checkbox][name="' + this.get('name') + '"]').isEmpty()) {
// This is the hidden input that is part of an advcheckbox.
hiddenVal = (this.get('value') == value);
return;
} else if (this.getAttribute('type').toLowerCase() == 'checkbox' && !Y.Node.getDOMNode(this).checked) {
lock = lock || hiddenVal;
return;
}
if (this.getAttribute('class').toLowerCase() == 'filepickerhidden') {
// Check for filepicker status.
var elementname = this.getAttribute('name');
if (elementname && M.form_filepicker.instances[elementname].fileadded) {
lock = false;
} else {
lock = true;
}
} else if (this.get('nodeName').toUpperCase() === 'SELECT' && this.get('multiple') === true) {
// Multiple selects can have one or more value assigned. A pipe (|) is used as a value separator
// when multiple values have to be selected at the same time.
values = value.split('|');
selected = [];
options = this.get('options');
options.each(function() {
if (this.get('selected')) {
selected[selected.length] = this.get('value');
}
});
if (selected.length > 0 && selected.length === values.length) {
for (var i in selected) {
v = selected[i];
if (values.indexOf(v) > -1) {
lock = true;
} else {
lock = false;
return;
}
}
} else {
lock = false;
}
} else {
lock = lock || this.get('value') == value;
}
});
return {
lock: lock,
hide: isHide ? lock : false
};
},
/**
* Lock the given field if the field value is in the given set of values.
*
* @param {Array} elements
* @param {String} values Single value or pipe (|) separated values when multiple
* @returns {{lock: boolean, hide: boolean}}
* @private
*/
_dependencyIn: function(elements, values, isHide) {
// A pipe (|) is used as a value separator
// when multiple values have to be passed on at the same time.
values = values.split('|');
var lock = false;
var hiddenVal = false;
var options, v, selected, value;
elements.each(function() {
if (this.getAttribute('type').toLowerCase() == 'radio' && !Y.Node.getDOMNode(this).checked) {
return;
} else if (this.getAttribute('type').toLowerCase() == 'hidden' &&
!this.siblings('input[type=checkbox][name="' + this.get('name') + '"]').isEmpty()) {
// This is the hidden input that is part of an advcheckbox.
hiddenVal = (values.indexOf(this.get('value')) > -1);
return;
} else if (this.getAttribute('type').toLowerCase() == 'checkbox' && !Y.Node.getDOMNode(this).checked) {
lock = lock || hiddenVal;
return;
}
if (this.getAttribute('class').toLowerCase() == 'filepickerhidden') {
// Check for filepicker status.
var elementname = this.getAttribute('name');
if (elementname && M.form_filepicker.instances[elementname].fileadded) {
lock = false;
} else {
lock = true;
}
} else if (this.get('nodeName').toUpperCase() === 'SELECT' && this.get('multiple') === true) {
// Multiple selects can have one or more value assigned.
selected = [];
options = this.get('options');
options.each(function() {
if (this.get('selected')) {
selected[selected.length] = this.get('value');
}
});
if (selected.length > 0 && selected.length === values.length) {
for (var i in selected) {
v = selected[i];
if (values.indexOf(v) > -1) {
lock = true;
} else {
lock = false;
return;
}
}
} else {
lock = false;
}
} else {
value = this.get('value');
lock = lock || (values.indexOf(value) > -1);
}
});
return {
lock: lock,
hide: isHide ? lock : false
};
},
_dependencyHide: function(elements, value) {
return {
lock: false,
hide: true
};
},
_dependencyDefault: function(elements, value, isHide) {
var lock = false,
hiddenVal = false,
values
;
elements.each(function() {
var selected;
if (this.getAttribute('type').toLowerCase() == 'radio' && !Y.Node.getDOMNode(this).checked) {
return;
} else if (this.getAttribute('type').toLowerCase() == 'hidden' &&
!this.siblings('input[type=checkbox][name="' + this.get('name') + '"]').isEmpty()) {
// This is the hidden input that is part of an advcheckbox.
hiddenVal = (this.get('value') != value);
return;
} else if (this.getAttribute('type').toLowerCase() == 'checkbox' && !Y.Node.getDOMNode(this).checked) {
lock = lock || hiddenVal;
return;
}
// Check for filepicker status.
if (this.getAttribute('class').toLowerCase() == 'filepickerhidden') {
var elementname = this.getAttribute('name');
if (elementname && M.form_filepicker.instances[elementname].fileadded) {
lock = true;
} else {
lock = false;
}
} else if (this.get('nodeName').toUpperCase() === 'SELECT' && this.get('multiple') === true) {
// Multiple selects can have one or more value assigned. A pipe (|) is used as a value separator
// when multiple values have to be selected at the same time.
values = value.split('|');
selected = [];
this.get('options').each(function() {
if (this.get('selected')) {
selected[selected.length] = this.get('value');
}
});
if (selected.length > 0 && selected.length === values.length) {
for (var i in selected) {
if (values.indexOf(selected[i]) > -1) {
lock = false;
} else {
lock = true;
return;
}
}
} else {
lock = true;
}
} else {
lock = lock || this.get('value') != value;
}
});
return {
lock: lock,
hide: isHide ? lock : false
};
}
}, {
NAME: 'mform-dependency-manager',
ATTRS: {
form: {
setter: function(value) {
return Y.one('#' + value);
},
value: null
},
dependencies: {
value: {}
}
}
});
M.form.dependencyManager = dependencyManager;
}
/**
* Stores a list of the dependencyManager for each form on the page.
*/
M.form.dependencyManagers = {};
/**
* Initialises a manager for a forms dependencies.
* This should happen once per form.
*
* @param {YUI} Y YUI3 instance
* @param {String} formid ID of the form
* @param {Array} dependencies array
* @return {M.form.dependencyManager}
*/
M.form.initFormDependencies = function(Y, formid, dependencies) {
// If the dependencies isn't an array or object we don't want to
// know about it
if (!Y.Lang.isArray(dependencies) && !Y.Lang.isObject(dependencies)) {
return false;
}
/**
* Fixes an issue with YUI's processing method of form.elements property
* in Internet Explorer.
* http://yuilibrary.com/projects/yui3/ticket/2528030
*/
Y.Node.ATTRS.elements = {
getter: function() {
return Y.all(new Y.Array(this._node.elements, 0, true));
}
};
M.form.dependencyManagers[formid] = new M.form.dependencyManager({form: formid, dependencies: dependencies});
return M.form.dependencyManagers[formid];
};
/**
* Update the state of a form. You need to call this after, for example, changing
* the state of some of the form input elements in your own code, in order that
* things like the disableIf state of elements can be updated.
*
* @param {String} formid ID of the form
*/
M.form.updateFormState = function(formid) {
if (formid in M.form.dependencyManagers) {
M.form.dependencyManagers[formid].updateAllDependencies();
}
};