51 lines
1.8 KiB
JavaScript
51 lines
1.8 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This Source Code Form is "Incompatible With Secondary Licenses", as
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* defined by the Mozilla Public License, v. 2.0.
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*/
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function sortedList_moveItem(paramName, direction, separator) {
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var select = document.getElementById('select_' + paramName);
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var inputField = document.getElementById('input_' + paramName);
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var currentIndex = select.selectedIndex;
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var newIndex = currentIndex + direction;
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var optionCurrentIndex;
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var optionNewIndex;
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/* Return if no selection */
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if (currentIndex < 0) return;
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/* Return if trying to move upward out of list */
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if (newIndex < 0) return;
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/* Return if trying to move downward out of list */
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if (newIndex >= select.length) return;
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/* Move selection */
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optionNewIndex = select.options[newIndex];
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optionCurrentIndex = select.options[currentIndex];
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/* Because some browsers don't accept the same option object twice in a
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* selection list, we need to put a blank option here first */
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select.options[newIndex] = new Option();
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select.options[currentIndex] = optionNewIndex;
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select.options[newIndex] = optionCurrentIndex;
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select.selectedIndex = newIndex;
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populateInputField(select, inputField, separator);
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}
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function populateInputField(select, inputField, separator) {
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var i;
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var stringRepresentation = '';
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for (i = 0; i < select.length; i++) {
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if (select.options[i].value == separator) {
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break;
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}
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if (stringRepresentation != '') {
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stringRepresentation += ',';
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}
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stringRepresentation += select.options[i].value;
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}
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inputField.value = stringRepresentation;
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}
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