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Struts example source code file (optiontransferselect.js)

This example Struts source code file (optiontransferselect.js) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Struts tags/keywords

array, array, object, object, regexp, regexp

The Struts optiontransferselect.js source code

/*
 * $Id: optiontransferselect.js 590812 2007-10-31 20:32:54Z apetrelli $
 *
 * 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.
 */

function moveSelectedOptions(objSourceElement, objTargetElement, toSort, notMove1, notMove2) {
    var test1 = compile(notMove1);
    var test2 = compile(notMove2);
    moveOptions(objSourceElement, objTargetElement, toSort, 
        function(opt) {
            return (opt.selected && !test1(opt.value) && !test2(opt.value));
        }
    );
}

function moveAllOptions(objSourceElement, objTargetElement, toSort, notMove1, notMove2) {
    var test1 = compile(notMove1);
    var test2 = compile(notMove2);
    moveOptions(objSourceElement, objTargetElement, toSort, 
        function(opt) {
            return (!test1(opt.value) && !test2(opt.value));
        }
    );
}

function compile(ptn) {
    if (ptn != undefined) {
    	if (ptn == '' || !window.RegExp) {
            return function(val) { return val == ptn; }
        } else {
            var reg = new RegExp(ptn);
            return function (val) { 
                if (val == '') { // ignore empty option added by template 
                	return true;
                }
            	return reg.test(val); }
        }
    }
    return function(val) { return false; }
}    

function moveOptions(objSourceElement, objTargetElement, toSort, chooseFunc) {
    var aryTempSourceOptions = new Array();
    var aryTempTargetOptions = new Array();
    var x = 0;

    //looping through source element to find selected options
    for (var i = 0; i < objSourceElement.length; i++) {
        if (chooseFunc(objSourceElement.options[i])) {
            //need to move this option to target element
            var intTargetLen = objTargetElement.length++;
            objTargetElement.options[intTargetLen].text =   objSourceElement.options[i].text;
            objTargetElement.options[intTargetLen].value =  objSourceElement.options[i].value;
        }
        else {
            //storing options that stay to recreate select element
            var objTempValues = new Object();
            objTempValues.text = objSourceElement.options[i].text;
            objTempValues.value = objSourceElement.options[i].value;
            aryTempSourceOptions[x] = objTempValues;
            x++;
        }
    }

    //sorting and refilling target list
    for (var i = 0; i < objTargetElement.length; i++) {
        var objTempValues = new Object();
        objTempValues.text = objTargetElement.options[i].text;
        objTempValues.value = objTargetElement.options[i].value;
        aryTempTargetOptions[i] = objTempValues;
    }
    
    if (toSort) {
        aryTempTargetOptions.sort(sortByText);
    }    
    
    for (var i = 0; i < objTargetElement.length; i++) {
        objTargetElement.options[i].text = aryTempTargetOptions[i].text;
        objTargetElement.options[i].value = aryTempTargetOptions[i].value;
        objTargetElement.options[i].selected = false;
    }   
    
    //resetting length of source
    objSourceElement.length = aryTempSourceOptions.length;
    //looping through temp array to recreate source select element
    for (var i = 0; i < aryTempSourceOptions.length; i++) {
        objSourceElement.options[i].text = aryTempSourceOptions[i].text;
        objSourceElement.options[i].value = aryTempSourceOptions[i].value;
        objSourceElement.options[i].selected = false;
    }
}

function sortByText(a, b) {
    if (a.text < b.text) {return -1}
    if (a.text > b.text) {return 1}
    return 0;
}

function selectAllOptionsExceptSome(objTargetElement, type, ptn) {
    var test = compile(ptn);
    for (var i = 0; i < objTargetElement.length; i++) {
        var opt = objTargetElement.options[i];
        if ((type == 'key' && !test(opt.value)) ||
              (type == 'text' && !test(opt.text))) {
            opt.selected = true;
        } else {
            opt.selected = false;
        }    
    }
    return false;
}

function selectAllOptions(objTargetElement) {
    for (var i = 0; i < objTargetElement.length; i++) {
        if (objTargetElement.options[i].value != '') {
            objTargetElement.options[i].selected = true;    
        }    
    }
    return false;
}

function moveOptionUp(objTargetElement, type, ptn) {
	var test = compile(ptn);
	for (i=0; i<objTargetElement.length; i++) {
		if (objTargetElement[i].selected) {
			var v;
			if (i != 0 && !objTargetElement[i-1].selected) {
		    	if (type == 'key') {
		    		v = objTargetElement[i-1].value
		    	}
		    	else {
		    		v = objTargetElement[i-1].text;
		    	}
				if (!test(v)) {
					swapOptions(objTargetElement,i,i-1);
				}
		    }
		}
	}
}

function moveOptionDown(objTargetElement, type, ptn) {
	var test = compile(ptn);
	for (i=(objTargetElement.length-1); i>= 0; i--) {
		if (objTargetElement[i].selected) {
			var v;
			if ((i != (objTargetElement.length-1)) && !objTargetElement[i+1].selected) {
		    	if (type == 'key') {
		    		v = objTargetElement[i].value
		    	}
		    	else {
		    		v = objTargetElement[i].text;
		    	}
				if (!test(v)) {
					swapOptions(objTargetElement,i,i+1);
				}
		    }
		}
	}
}

function swapOptions(objTargetElement, first, second) {
	var opt = objTargetElement.options;
	var temp = new Option(opt[first].text, opt[first].value, opt[first].defaultSelected, opt[first].selected);
	var temp2= new Option(opt[second].text, opt[second].value, opt[second].defaultSelected, opt[second].selected);
	opt[first] = temp2;
	opt[second] = temp;
}

Other Struts examples (source code examples)

Here is a short list of links related to this Struts optiontransferselect.js source code file:

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