nk20/static/autocomplete_light/forward.js

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JavaScript
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2020-02-25 21:15:46 +00:00
;(function($, yl) {
yl.forwardHandlerRegistry = yl.forwardHandlerRegistry || {};
yl.registerForwardHandler = function(name, handler) {
yl.forwardHandlerRegistry[name] = handler;
};
yl.getForwardHandler = function(name) {
return yl.forwardHandlerRegistry[name];
};
function getForwardStrategy(element) {
var checkForCheckboxes = function() {
var all = true;
$.each(element, function(ix, e) {
if ($(e).attr("type") !== "checkbox") {
all = false;
}
});
return all;
};
if (element.length === 1 &&
element.attr("type") === "checkbox" &&
element.attr("value") === undefined) {
// Single checkbox without 'value' attribute
// Boolean field
return "exists";
} else if (element.length === 1 &&
element.attr("multiple") !== undefined) {
// Multiple by HTML semantics. E. g. multiple select
// Multiple choice field
return "multiple";
} else if (checkForCheckboxes()) {
// Multiple checkboxes or one checkbox with 'value' attribute.
// Multiple choice field represented by checkboxes
return "multiple";
} else {
// Other cases
return "single";
}
}
/**
* Get fields with name `name` relative to `element` with considering form
* prefixes.
* @param element the element
* @param name name of the field
* @returns jQuery object with found fields or empty jQuery object if no
* field was found
*/
yl.getFieldRelativeTo = function(element, name) {
var prefixes = $(element).getFormPrefixes();
for (var i = 0; i < prefixes.length; i++) {
var fieldSelector = "[name=" + prefixes[i] + name + "]";
var field = $(fieldSelector);
if (field.length) {
return field;
}
}
return $();
};
/**
* Get field value which is put to forwarded dictionary
* @param field the field
* @returns forwarded value
*/
yl.getValueFromField = function(field) {
var strategy = getForwardStrategy(field);
var serializedField = $(field).serializeArray();
if ((serializedField == false) && ($(field).prop('disabled'))) {
$(field).prop('disabled', false);
serializedField = $(field).serializeArray();
$(field).prop('disabled', true);
}
var getSerializedFieldElementAt = function (index) {
// Return serializedField[index]
// or null if something went wrong
if (serializedField.length > index) {
return serializedField[index];
} else {
return null;
}
};
var getValueOf = function (elem) {
// Return elem.value
// or null if something went wrong
if (elem.hasOwnProperty("value") &&
elem.value !== undefined
) {
return elem.value;
} else {
return null;
}
};
var getSerializedFieldValueAt = function (index) {
// Return serializedField[index].value
// or null if something went wrong
var elem = getSerializedFieldElementAt(index);
if (elem !== null) {
return getValueOf(elem);
} else {
return null;
}
};
if (strategy === "multiple") {
return serializedField.map(
function (item) {
return getValueOf(item);
}
);
} else if (strategy === "exists") {
return serializedField.length > 0;
} else {
return getSerializedFieldValueAt(0);
}
};
yl.getForwards = function(element) {
var forwardElem,
forwardList,
forwardedData,
divSelector,
form;
divSelector = "div.dal-forward-conf#dal-forward-conf-for-" +
element.attr("id") + ", " +
"div.dal-forward-conf#dal-forward-conf-for_" +
element.attr("id");
form = element.length > 0 ? $(element[0].form) : $();
forwardElem =
form.find(divSelector).find('script');
if (forwardElem.length === 0) {
return;
}
try {
forwardList = JSON.parse(forwardElem.text());
} catch (e) {
return;
}
if (!Array.isArray(forwardList)) {
return;
}
forwardedData = {};
$.each(forwardList, function(ix, field) {
var srcName, dstName;
if (field.type === "const") {
forwardedData[field.dst] = field.val;
} else if (field.type === "self") {
if (field.hasOwnProperty("dst")) {
dstName = field.dst;
} else {
dstName = "self";
}
forwardedData[dstName] = yl.getValueFromField(element);
} else if (field.type === "field") {
srcName = field.src;
if (field.hasOwnProperty("dst")) {
dstName = field.dst;
} else {
dstName = srcName;
}
var forwardedField = yl.getFieldRelativeTo(element, srcName);
if (!forwardedField.length) {
return;
}
forwardedData[dstName] = yl.getValueFromField(forwardedField);
} else if (field.type === "javascript") {
var handler = yl.getForwardHandler(field.handler);
forwardedData[field.dst || field.handler] = handler(element);
}
});
return JSON.stringify(forwardedData);
};
})(yl.jQuery, yl);