curator/src/main/webapp/js/editing.js

/*
  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
  the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
*/


/**
 * Metadata editors
 *
 */

function makeStagedMetadataEditable() {
	makeMetadataEditable(
		$("#stagedMetadataWorkbenchContent > table > tbody > tr >  td"),
		updateStagedMetadata);
}

function makeProductMetadataEditable() {
	makeMetadataEditable(
		$("#catalogMetadataWorkbenchContent > table > tbody > tr > td"),
		updateProductMetadata);		
}

function makeProductTypeMetadataEditable() {
	makeMetadataEditable(
		$("#liveProductTypeWorkbenchContents div.ptwbMetadataList > table > tbody > tr > td"),
		updateProductTypeMetadata);
}

function updateStagedMetadata() {
	// Data is the collection of <tr/> elements that contain metadata key/value pairs
	var data = getMetadataFromSource($('#stagedMetadataWorkbenchContent > table > tbody > tr'));
	var qstr = getQueryStringFromMetadata(_paths.currentStagedFile, data);
	
	$.post('./services/metadata/staging',
		qstr,
		function(data, textStatus) {
			// alert(data);
		}
	);
}

function updateProductMetadata() {
	// Data is the collection of <tr/> elements that contain metadata key/value pairs
	var data = getMetadataFromSource($('#catalogMetadataWorkbenchContent > table > tbody > tr'));
	var qstr = getQueryStringFromMetadata(_paths.currentCatalogedFile, data);

	$.post('./services/metadata/catalog',
		qstr,
		function(data, textStatus) {
			// alert(data);
		}
	);
}

function updateProductTypeMetadata() {
	// Data is the collection of <tr/> elements that contain metadata key/value pairs
	var data = getMetadataFromSource($('#liveProductTypeWorkbenchContents div.ptwbMetadataList > table > tbody > tr'));
	var qstr = getQueryStringFromMetadata(_paths.currentProductType, data);

	$.post('./services/metadata/productType',
		qstr,
		function(data, textStatus) {
			// alert(data);
		}
	);
}



/**
 * Utility functions to encapsulate common functionality
 *
 */

// source:   the collection of <td/> objects containing metadata values
// callback: the function to be called to persist the edits
function makeMetadataEditable(source, callback) {
	// Set up the i/f to display the icon only when the user is hovering over
	// the field
	source.click(function() {
		var $met = $(this);
		var metValue = $met; // the <td> itself
			var metKey = $(this).prev().text();
			jPromptMulti(
					metKey,
					metValue,
					'Update Metadata',
					function(r) {

						if (r) {
							// turn r into a comma-separated string of values
							htmlResult = '<span>' + r.join('</span>, <span>') + '</span>';
							// alert( 'You entered ' + htmlResult )
							$met.html(htmlResult);
							callback();
						}
					});
		});
}

function getMetadataFromSource( source ) {
	
	// Keys are 1 per row in <th/> elements
	// Values are 1 per row in <td/> elements
	
	var $table = source;
	var data   = Array();
	$table.each( function () {
		// Create a key/value mapping of the staged metadata
		var $valueElmt = $(this).children('td');
		// All values are wrapped in <span/> elements and there can be
		// an unlimited number of them, so build an array.
		var $values    = $valueElmt.children('span');
		var valueData  = Array();
		for (var i = 0; i < $values.length; i ++ ) {
			valueData.push($values[i].textContent);
		}
		// Assign the value data to the correct element
		data.push( { 'key' : $(this).children('th').text(), 'value' : valueData } );
	});
	
	return data;
}

function getQueryStringFromMetadata(id,data) {
	// Build the query string that will be sent to the server
	var qstr      = '';
	qstr         += 'id=' + id;
	for ( var i = 0; i < data.length; i++ ) {
		for ( var j = 0; j < data[i].value.length; j++ ) {
			qstr += '&metadata.' + data[i].key + '=' + data[i].value[j];
		}
	}
	
	return qstr;
}