//============================================================================== // Name: rtqwPlotUtils // Purpose: Process the request for RTQWWeb. // Version: 3.0 // Date: 2/2008 // Authour: X. Jian, B. Garner //------------------------------------------------------------------------------- // Usage: // In the area, add // //------------------------------------------------------------------------------- // Notes: // This version is for the MVC/PHP version of the RTQW website. //------------------------------------------------------------------------------- // History // 01/14/02 - Initial coding. // 11/01/02 - 1.0.1 // 07/11/07 - Garner, major revisions for dynamic frontend // 03/02/09 - Garner, fixed small runtime error //=============================================================================== // //----------Define a list of user's varialbes // var gFormSelects = new Array('station', 'parameter', 'valueType', 'timePeriod', 'season', 'month', 'availableData'); var _station, _parameter, _valueType, _timePeriod, _season, _month, _availableData; //=============================================================================== function showNext(frmObj) { var idx = frmObj.parameter.selectedIndex idx++; if (idx >= frmObj.parameter.length) { idx = 0 } frmObj.parameter.selectedIndex = idx showCurrent(frmObj) } //=============================================================================== function showPrevious(frmObj) { var idx = frmObj.parameter.selectedIndex idx--; if (idx < 0) { idx = frmObj.parameter.length - 1 } frmObj.parameter.selectedIndex = idx showCurrent(frmObj) } //============================================================================== // Name: getFormComponents (frmObj) // Purpose: Get the values of form components // Argument: // frmObj - The object of html form. //============================================================================= function getFormComponents(frmObj){ if (frmObj == null) { frmObj = document.frmSwap; } if (frmObj == null) {return 0} for (i = 0; i < gFormSelects.length; i++) { var formControl; selectName = gFormSelects[i]; eval ("_" + selectName + " = ''"); eval ("formControl = frmObj." + selectName); if (formControl) { var idx; idx = formControl.selectedIndex; eval ('_' + selectName + " = formControl.options[idx].value"); } } return 1; } //=============================================================================== // Name: ShowCurrent // Purpose: Update the rtqw url and time-series plot. // Argument: // frmObj - The object of html form. //----------------------------------------------------------------------------- // Algorithm: // 1. Get the form component values // 2. Determine the page in terms of the component values. // 3. Open the new page. //----------------------------------------------------------------------------- // History // Date Description // ----------- ---------------------------------------------------------------- // 04/23/2002 When the time period is '7D' or '31'D, set the available data to 'uv'. // 02/2008 Build new url more flexibly, to always go to same URI as current page. //=============================================================================== function showCurrent(frmObj) { getFormComponents(frmObj); if (_timePeriod == '31d' || _timePeriod == '7d') { _season = "all"; } if (_season == "mm") { _season = _month; if (_season == "") { _season = "01"; // default to January, as control may not always be populated } } if (_season == "") { _season = "all"; } // built GET parameter list var parms = "site_no=" + _station + "&pcode=" + _parameter + "&period=" + _timePeriod + "_" + _season + "×tep=" + _availableData; if (_valueType != 'concentration') { parms = parms + "&units=" + _valueType; } parms = parms.toLowerCase(); // paste together new url using current one, var newurl = document.URL.split('?')[0] + '?' + parms; window.location = newurl; // load new page }