var kgst = kgst || {};

kgst.Tools = {
    clearInput: function(field) {
        if (field.defaultValue==field.value)
            field.value = "";
    },

    fillInput: function(field) {
        if (field.value == "")
            field.value = field.defaultValue;
    },

    updateProvinces: function(province) {
        var provinceSelect = province;
        var country = document.getElementById("country").value;
        /* Delete old options */
        provinceSelect.length = 0;
        /* Add new options */
        if (country != "") {
            var newProvinceID = "provinces-for-" + country;
            var newLabelID = "province-label-" + country;
            var newSelectOptions = document.getElementById(newProvinceID).options;
            for (i=0; i < newSelectOptions.length; i++) {
                provinceSelect.options[provinceSelect.options.length] = new Option(newSelectOptions[i].text,newSelectOptions[i].value,newSelectOptions[i].name);
            }
            /* Changing the Label */
            document.getElementById("province-name").innerHTML = document.getElementById(newLabelID).innerHTML;
        }
    },

    updateDistricts: function(province, district) {
        var districtSelect = district;
        var currentID = province.value;
        /** Delete old district options **/
        districtSelect.length = 0;
        if (currentID != "") {
            var newDistrictID = "districtId-for-" + currentID;
            var newSelectOptions = document.getElementById(newDistrictID).options;
            for (i=0; i < newSelectOptions.length; i++) {
                districtSelect.options[districtSelect.options.length] = new Option(newSelectOptions[i].text,newSelectOptions[i].value,newSelectOptions[i].name);
            }
            
        }
    //alert(districtSelect + ":" + currentID);
    },

    clearDistricts: function(district) {
        var districtSelect = district;
        districtSelect.length = 0;
    },
    
    urlencode: function(str) {
        // http://kevin.vanzonneveld.net
        // +   original by: Philip Peterson
        // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
        // +      input by: AJ
        // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
        // +   improved by: Brett Zamir (http://brett-zamir.me)
        // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
        // +      input by: travc
        // +      input by: Brett Zamir (http://brett-zamir.me)
        // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
        // +   improved by: Lars Fischer
        // %          note 1: info on what encoding functions to use from: http://xkr.us/articles/javascript/encode-compare/
        // *     example 1: urlencode('Kevin van Zonneveld!');
        // *     returns 1: 'Kevin+van+Zonneveld%21'
        // *     example 2: urlencode('http://kevin.vanzonneveld.net/');
        // *     returns 2: 'http%3A%2F%2Fkevin.vanzonneveld.net%2F'
        // *     example 3: urlencode('http://www.google.nl/search?q=php.js&ie=utf-8&oe=utf-8&aq=t&rls=com.ubuntu:en-US:unofficial&client=firefox-a');
        // *     returns 3: 'http%3A%2F%2Fwww.google.nl%2Fsearch%3Fq%3Dphp.js%26ie%3Dutf-8%26oe%3Dutf-8%26aq%3Dt%26rls%3Dcom.ubuntu%3Aen-US%3Aunofficial%26client%3Dfirefox-a'

        var histogram = {}, unicodeStr='', hexEscStr='';
        var ret = (str+'').toString();

        var replacer = function(search, replace, str) {
            var tmp_arr = [];
            tmp_arr = str.split(search);
            return tmp_arr.join(replace);
        };

        // The histogram is identical to the one in urldecode.
        histogram["'"]   = '%27';
        histogram['(']   = '%28';
        histogram[')']   = '%29';
        histogram['*']   = '%2A';
        histogram['~']   = '%7E';
        histogram['!']   = '%21';
        histogram['%20'] = '+';
        histogram['\u00DC'] = '%DC';
        histogram['\u00FC'] = '%FC';
        histogram['\u00C4'] = '%D4';
        histogram['\u00E4'] = '%E4';
        histogram['\u00D6'] = '%D6';
        histogram['\u00F6'] = '%F6';
        histogram['\u00DF'] = '%DF';
        histogram['\u20AC'] = '%80';
        histogram['\u0081'] = '%81';
        histogram['\u201A'] = '%82';
        histogram['\u0192'] = '%83';
        histogram['\u201E'] = '%84';
        histogram['\u2026'] = '%85';
        histogram['\u2020'] = '%86';
        histogram['\u2021'] = '%87';
        histogram['\u02C6'] = '%88';
        histogram['\u2030'] = '%89';
        histogram['\u0160'] = '%8A';
        histogram['\u2039'] = '%8B';
        histogram['\u0152'] = '%8C';
        histogram['\u008D'] = '%8D';
        histogram['\u017D'] = '%8E';
        histogram['\u008F'] = '%8F';
        histogram['\u0090'] = '%90';
        histogram['\u2018'] = '%91';
        histogram['\u2019'] = '%92';
        histogram['\u201C'] = '%93';
        histogram['\u201D'] = '%94';
        histogram['\u2022'] = '%95';
        histogram['\u2013'] = '%96';
        histogram['\u2014'] = '%97';
        histogram['\u02DC'] = '%98';
        histogram['\u2122'] = '%99';
        histogram['\u0161'] = '%9A';
        histogram['\u203A'] = '%9B';
        histogram['\u0153'] = '%9C';
        histogram['\u009D'] = '%9D';
        histogram['\u017E'] = '%9E';
        histogram['\u0178'] = '%9F';

        // Begin with encodeURIComponent, which most resembles PHP's encoding functions
        ret = encodeURIComponent(ret);

        for (unicodeStr in histogram) {
            hexEscStr = histogram[unicodeStr];
            ret = replacer(unicodeStr, hexEscStr, ret); // Custom replace. No regexing
        }

        // Uppercase for full PHP compatibility
        return ret.replace(/(\%([a-z0-9]{2}))/g, function(full, m1, m2) {
            return "%"+m2.toUpperCase();
        });
    },

    highlightInvalidElement: function(element) {
        element.style.border ="1px solid red";
        element.style.color = "red";
    },

	updateHitsPerPage: function(hitsPerPage) {
		var hpp_k = document.getElementById('hitsPerPage_k');
		if (hpp_k) {
			hpp_k.value = hitsPerPage;
		}
		var hpp_p = document.getElementById('hitsPerPage_p');
		if (hpp_p) {
			hpp_p.value = hitsPerPage;
		}
		var hpp_s = document.getElementById('hitsPerPage_s');
		if (hpp_s) {
			hpp_s.value = hitsPerPage;
		}
	}
}